CN221933333U - Composite filter element and equipment with water purification function - Google Patents

Abstract

The utility model discloses a composite filter element and a device with a water purification function, wherein the composite filter element includes a filter bottle cover; a plurality of adapters, wherein the plurality of adapters are used for water inlet and/or water outlet, and the filter bottle cover is provided with an adapter groove for the adapter to be connected; a limit bar, wherein the limit bar is arranged on the filter bottle cover, and the limit bar is used to limit the adapter; wherein the filter bottle cover is also provided with a decorative cover, and the decorative cover is used to limit the limit bar. The technical solution of the utility model adopts the technical solution of the utility model to limit the adapter by adopting a limit bar, thereby reducing the possibility of the adapter coming off the filter bottle cover after being subjected to water flow pressure, ensuring the connection stability between the adapter and the filter bottle cover, and further ensuring the stability of the connection between the composite filter element as a whole and the external waterway.

Description

Composite filter element and equipment with water purification function

Technical Field

The utility model relates to the field of water purification, in particular to a composite filter element and equipment with water purification function.

Background Art

At present, the pre-filter element and/or the post-filter element are often integrated with the reverse osmosis filter element. However, after the filter element is integrated, in order to facilitate the replacement of the filter element, an adapter needs to be provided on the housing of the filter element to connect the water path inside the filter element. In order to ensure that the water flow can overcome the resistance of the filter element and pass through the filter element smoothly, the water flow generally carries a large pressure. Therefore, when the water flows from the inside of the filter element through the adapter and enters the external water path, the adapter may be detached from the filter element housing due to the pressure brought by the water flow.

Utility Model Content

The main purpose of the utility model is to provide a composite filter element, aiming to reduce the possibility of the adapter falling off from the filter bottle cover.

To achieve the above purpose, the composite filter element proposed by the utility model comprises

Filter bottle cap;

A plurality of adapters, wherein the adapters are used for water inlet and/or water outlet, and the filter bottle cover is provided with an adapter groove for the adapters to be connected;

A limit strip, which is arranged on the filter bottle cover and is used to limit the adapter from coming out of the adapter slot;

A decorative cover is arranged on the filter bottle cover, and is used to limit the limiting strip from coming off the filter bottle cover.

Optionally/in one embodiment, a mounting groove for installing the limit strip is provided on the filter bottle cover, the limit strip includes a strip-shaped main body, a plurality of limit protrusions are arranged on the main body at intervals along its length direction, a plurality of limit grooves are provided on the bottom of the mounting groove, and the limit protrusions are inserted into the limit grooves to limit the adapter.

Optionally/in one embodiment, the limiting protrusion corresponds to the limiting groove one by one, and the limiting groove is communicated with the adapter groove.

Optionally/in one embodiment, an engaging groove cooperating with the limiting protrusion is provided on the adapter.

Optionally/in one embodiment, the decorative cover is slidably connected to the filter bottle cover, and the bottom surface of the decorative cover is used to limit the limiting strip.

Optionally/in one embodiment, two opposite sides of the decorative cover are extended and bent to form a first matching portion, and the first matching portion is slidably matched with the filter bottle cover.

Optionally/in one embodiment, a connecting portion is provided at the bottom of the first matching portion, and a sliding groove for the connecting portion to slide is provided on the filter bottle cover.

Optionally/in one embodiment, buckle platforms are formed on the facing sides of the two connecting parts, and a buckle groove cooperating with the buckle platform is formed on one side surface of the connecting part, and the cooperation between the buckle platform and the buckle groove is used to limit the axial movement of the decorative cover on the composite filter element.

Optionally/in one embodiment, the decorative cover includes a main body and a covering portion, the covering portion is connected to the main body, and the covering portion is used to shield a plurality of the adapters.

Optionally/in one embodiment, the covering portion includes a top plate, the bottom surface of the top plate has a relative height lower than the bottom surface of the main body, and a step surface is formed between the bottom surface of the top plate and the bottom surface of the main body.

Optionally/in one embodiment, one end of the main body away from the covering portion is in an arc shape.

The utility model also provides a device with a water purification function, comprising the composite filter element.

The technical solution of the utility model limits the adapter by using a limit strip, thereby reducing the possibility of the adapter coming off the filter bottle cover after being subjected to water flow pressure, ensuring the stability of the connection between the adapter and the filter bottle cover, and further ensuring the stability of the connection between the composite filter element as a whole and the external water channel; and the decorative cover will fix the limit strip on the filter bottle cover, further improving the limiting effect of the limit strip on the adapter, thereby improving the stability of the overall structure.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

Figure 1 is a schematic diagram of the overall structure of the composite filter element of the utility model;

FIG2 is an exploded view of the composite filter structure of the utility model;

Figure 3 is a cross-sectional schematic diagram of the composite filter element of the utility model;

FIG4 is a schematic diagram of the matching structure of the decorative cover and the filter bottle cover in the composite filter element of the utility model;

5 is a schematic diagram of the state where the filter element handle and the limit portion of the composite filter element of the utility model are released from the engagement;

FIG6 is an exploded view of the filter bottle cover, filter element cover and filter element handle in the composite filter element of the utility model;

FIG7 is an enlarged view of portion A in FIG6 ;

FIG8 is an exploded view of the filter bottle cover, filter element cover and filter element handle of the composite filter element of the utility model from another viewing angle;

FIG9 is an exploded view of the structure of the composite filter element filter bottle cover and the adapter of the utility model;

FIG10 is an exploded view of the filter bottle cover and the decorative cover of the utility model;

FIG11 is an enlarged view of portion B in FIG10 ;

FIG12 is an exploded view of the structure of the composite filter element filter bottle cover and the adapter from another perspective of the present invention;

FIG13 is an enlarged view of portion C in FIG12 ;

FIG14 is a cross-sectional view of the filter bottle cover and the assembly cover of the utility model after being matched;

FIG15 is a schematic diagram of the structure of the decorative cover of the utility model;

FIG16 is a schematic diagram of the decorative cover structure of the present invention from another viewing angle;

FIG. 17 is a schematic diagram of the decorative cover structure of the present invention from another viewing angle.

Description of Figure Numbers:

The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and/or" appearing in the full text is to include three parallel schemes, taking "A and/or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

1 to 3 , the utility model proposes a composite filter element, including a filter bottle 100, a first filter component 200, a second filter component 300 and a central tube 340; wherein, the filter bottle 100 is directly detachably installed in a device with a water purification function or is arranged outside the device and connected to the device, the central tube 340 is arranged in the filter bottle 100, so that an installation space is formed between the inner wall of the filter bottle 100 and the outer wall of the central tube 340, and the second filter component 300 is arranged in the installation space of the filter bottle 100; the second filter component 300 will filter solutes such as salt ions in water, thereby reducing the concentration of solutes such as salt ions in water; the first filter component 200 is detachably installed in the central tube 340, and will filter out impurities contained in water and/or improve the taste of water.

The composite filter element proposed in the present invention sets a central tube 340 in the filter bottle 100, installs the second filter component 300 between the filter bottle 100 and the central tube 340, and then detachably installs the first filter component 200 in the central tube 340, so that the overall disassembly of the first filter component 200 is independent of the second filter component 300, and then only the pre-filter element 214 and/or the post-filter element 215 need to be replaced when the service life of the pre-filter element 214 and/or the post-filter element 215 reaches the end of the service life, which can further make full use of the service life of the reverse osmosis filter element 310 in the second filter component 300, thereby reducing the overall use cost of the composite filter element.

1 to 3 , it should be noted that, in one embodiment of the present invention, the first filter component 200 includes a post-filter element 215 , that is, the purpose of the first filter component 200 includes filtering the purified water filtered by the second filter component 300 to improve the drinking taste of the purified water.

Specifically, the central tube 340 is coaxially arranged in the filter bottle 100, and the filter bottle cap 400 is arranged on the top of the filter bottle 100. The second filter component 300 includes a reverse osmosis filter element 310, and the reverse osmosis filter element 310 is arranged in the installation space formed between the inner wall of the filter bottle 100 and the outer wall of the central tube 340. In order to fix the reverse osmosis filter element 310 in the filter bottle 100, the second filter component 300 also includes a reverse osmosis top cover 320 and a reverse osmosis bottom cover 330. The reverse osmosis top cover 320 and the reverse osmosis bottom cover 330 are respectively arranged on the top and bottom of the reverse osmosis filter element 310, and the reverse osmosis top cover 320 and the reverse osmosis bottom cover 330 are both provided with a reverse osmosis filter element 310 groove for the end of the reverse osmosis filter element 310 to be embedded; thus, the reverse osmosis top cover 320 and the reverse osmosis bottom cover 330 jointly fix the reverse osmosis filter element 310 in the filter bottle 100; and the filter bottle cover 400 is used to provide a seal for the filter bottle 100, thereby ensuring the normal operation of the reverse osmosis filter element 310.

The first filter assembly 200 is disposed in the central tube 340; specifically, the central tube 340 is used to provide a storage space for the first filter assembly 200, and the central tube 340 will block the direct contact between the first filter assembly 200 and the reverse osmosis filter element 310, thereby blocking the direct impact of the water flow on the first filter assembly 200, and ensuring the overall service life of the first filter assembly 200. Accordingly, when filtering water, the water flow will flow from the inner wall of the filter bottle 100 to the outer wall of the central tube 340, so that the water flow will flow through the reverse osmosis filter element 310, thereby reducing the concentration of solutes such as salt ions in the water.

On the basis of the above, referring to Figure 9, it should be noted that a wastewater outlet 415 is provided on the filter bottle cover 400, and the wastewater outlet 415 is communicated with the installation space between the filter bottle 100 and the central tube 340; the reverse osmosis filter element 310 is tightly fitted with the central tube 340, so that after the water flow enters the reverse osmosis filter element 310, only part of the water will pass through the reverse osmosis filter element 310 under the action of pressure, and the remaining part of the water flow cannot completely pass through the reverse osmosis filter element 310 but passes through the reverse osmosis top cover 320 and then is discharged from the filter bottle 100 through the wastewater outlet 415; reverse osmosis filtration separates solutes in water based on the different rates at which solutes such as salt ions and water molecules pass through the reverse osmosis filter membrane, so that the water that does not pass through the reverse osmosis filter element 310 and enters the wastewater outlet 415 will take away most of the impurity solutes such as salt ions, thereby ensuring the overall filtering effect of the second filter component 300.

Continuing to refer to FIG. 1 to FIG. 3 , in this embodiment, the first filter assembly 200 includes a post filter element 215 and a filter element cover 210, the post filter element 215 is connected to the filter element cover 210, and the filter bottle cover 400 is provided with a clamping groove 420 for the filter element cover 210 to be embedded, and the setting of the clamping groove 420 enables the first filter assembly 200 as a whole to be directly inserted into the central tube 340 or directly removed from the central tube 340. Thus, the disassembly of the first filter assembly 200 is convenient; the filter bottle cover 400 is provided with a second water inlet 413, the filter element cover 210 is provided with a second water outlet 213, and the central tube 340 is provided with a plurality of first water holes 340a, and the water flows into the filter bottle 100 through the second water inlet 413, and then enters the post filter element 215 through the first water holes 340a after being filtered by the second filter assembly 300, and then is discharged through the second water outlet 213.

In order to match the detachability of the first filter assembly 200 , a through hole 321 is provided on the reverse osmosis top cover 320 for the central tube 340 to extend out, so that the first filter assembly 200 can be directly taken out of the central tube 340 when the first filter assembly 200 is disassembled.

It should be noted in the present embodiment that the first filter assembly 200 further includes an upper end cover 230 and a lower end cover 240, the post filter element 215 is arranged in the central tube 340, the upper end cover 230 is connected to the top end of the post filter element 215, and the lower end cover 240 is arranged on the bottom end of the post filter element 215; and the filter element cover 210 is connected to the upper end cover 230, and a filter element handle 250 is arranged on the filter element cover 210; therefore, when the first filter assembly 200 needs to be replaced, the user can lift the filter element handle 250 and bring up the filter element cover 210, and the filter element cover 210 will bring up the upper end cover 230, the post filter element 215 and the lower end cover 240, thereby lifting the first filter assembly 200 as a whole; thereby completing the replacement of the first filter assembly 200.

In another embodiment of the present invention, the first filter component 200 may be additionally provided with a pre-filter element 214 to filter impurities such as particulate matter and floccules contained in the water flow before the water flows through the second filter component 300; specifically, the pre-filter element 214 can be arranged between the upper end cover 230 and the rear filter element 215, the pre-filter element 214 can also be arranged between the lower end cover 240 and the rear filter element 215, the pre-filter element 214 can also be arranged in parallel with the rear filter element 215 between the upper end cover 230 and the lower end cover 240, or the rear filter element 215 can be replaced as a whole with the pre-filter element 214.

It should be noted that when there is a pre-filter element 214, the water flow will first flow through the pre-filter element 214, and then enter the post-filter element 215 after being filtered by the second filter component 300. Therefore, the flow path can be set according to the specific settings of the pre-filter element 214 and the post-filter element 215.

Continuing to refer to Figures 1 to 3, it should be noted that when the pre-filter element 214 and the post-filter element 215 are installed at the same time, a partition 270 will be provided between the pre-filter element 214 and the post-filter element 215, and the partition 270 will separate the pre-filter element 214 and the post-filter element 215 in the central tube 340 to ensure that the water paths of the two are not mixed; an outlet pipe 220 will be provided on the partition 270, and the outlet pipe 220 is respectively connected to the hollow part of the post-filter element 215 and the external water path; specifically, raw water will enter from the first water inlet 211, and after being filtered by the pre-filter element 214, it will pass through the hollow part of the pre-filter element 214. The filtered water is then discharged from the first water outlet 212 to form the first purified water, which then enters the filter bottle 100 through the second water inlet 413 and is filtered by the second filter assembly 300; the water filtered by the second filter assembly 300 is the second purified water, which then enters the partition 270 through the first water hole 340a and the second water hole 270a, and then is filtered by the post-filter element 215 to form pure water, which then passes through the hollow part of the post-filter element 215 and then is discharged from the filter bottle 100 through the water outlet pipe 220 to the second water outlet 213; the pure water discharged from the filter bottle 100 is provided to the user.

When only the pre-filter 214 is installed, the raw water will also be filtered by the pre-filter 214 to form the first clean water, and then the first clean water will be filtered by the second filter assembly 300 to form the second clean water, and the second clean water will directly enter the partition 270 and then be discharged through the outlet pipe 220 and the second outlet 213; or the pre-filter 214 is installed as a whole in the central tube 340, the installation position of the post-filter 215 is cancelled, and an additional second clean water outlet is opened to discharge the second clean water.

When only the post-filter element 215 is installed, the water entering the second filter assembly 300 still needs to be filtered by the pre-filter element 214 first; the post-filter element 215 can also be installed as a whole in the central tube 340, and the installation position of the pre-filter element 214 can be cancelled. If the installation position of the pre-filter element 214 is cancelled, the setting of the partition 270 can also be cancelled. After the setting of the partition 270 is cancelled, the setting of the water outlet pipe 220 can be cancelled, and the second water outlet 213 and the first water outlet 212 can be combined; and the second clean water filtered by the second filter assembly 300 still passes through the first water hole 340a or the first water hole 340a and the second water hole 270a and then is filtered through the post-filter element 215, and then discharged from the filter bottle 100.

4 to 6 , in order to facilitate the user to replace the filter bottle 100 equipped with the reverse osmosis filter element 310 or the first filter component 200 including the pre-filter element 214 and/or the post-filter element 215 respectively, a filter bottle 100 handle is provided on the filter bottle cover 400, and a filter element handle 250 is provided on the first filter component 200; therefore, when the user needs to replace the filter bottle 100 or the first filter component 200 respectively, the first filter component 200 can be lifted out of the filter bottle 100, or the filter bottle 100 can be lifted out of the relevant equipment, thereby facilitating the user to replace the reverse osmosis filter element 310 and the pre-filter element 214 and/or the post-filter element 215.

On the basis of the above, referring to Figures 7 to 9, specifically, the shape of the filter element handle 250 is similar to a U-shape, and adapter posts 260a are provided at both ends of the filter element handle 250, and connecting grooves 216 are provided on the opposite sides of the filter element cover 210, and the adapter posts 260a are rotatably connected in the connecting grooves 216; thus, the filter element handle 250 can be rotated up and down, so that the filter element handle 250 can be placed on the filter element cover 210 for storage when not in use, thereby reducing the overall space occupied by the filter element cover 210; it should be noted that in order to ensure the structural strength of the filter element handle 250, the filter element handle 250 can be manufactured using an integrated molding process.

The connecting groove 216 is a waist-shaped groove, that is, the two ends of the connecting groove 216 are arc-shaped, and the extension direction of the connecting groove 216 intersects with the height direction of the filter bottle 100; further, the length of the connecting groove 216 is greater than twice the diameter of the bottom surface of the adapter column 260a, and the extension direction of the connecting groove 216 is perpendicular to the axial direction of the composite filter element; further, the extension direction of the connecting groove 216 can be parallel to the horizontal plane; the setting of the connecting groove 216 allows the adapter column 260a to slide in the connecting groove 216, so that when the user places the first filter component 200 in the central tube 340, the filter element handle 250 can be rotated to be parallel to a certain cross-section of the filter element cover 210 and then slide to reduce the gap between the filter element handle 250 and the filter element cover 210 , thereby reducing the space occupied by the filter element handle 250; and when the first filter component 200 needs to be lifted out of the central tube 340, the filter element handle 250 can be slid first to increase the gap between the filter element handle 250 and the filter element cover 210, and then the filter element handle 250 can be rotated to a position suitable for the user to exert force to lift the first filter component 200; in summary, the rotating and slidable setting of the filter element handle 250 makes the space occupied by the filter element handle 250 when the first filter component 200 is installed in the central tube 340 smaller, which facilitates the overall integration and compounding of the filter element; and when the first filter component 200 needs to be lifted out of the central tube 340, the filter element handle 250 can facilitate the user to lift out the first filter component 200, thereby improving the convenience during use.

Specifically, in order to limit the rotation of the filter element handle 250 when it is stored, a limiting structure 430 is provided on the filter bottle cover 400. In this embodiment, the limiting structure 430 is specifically a limiting portion 431 protruding from the clamping groove 420, and a sliding portion 260b is provided on both ends of the filter element handle 250. The length direction of the sliding portion 260b is parallel to the length direction of the connecting groove 216, and the transfer column 260a is provided on the sliding portion 260b; in addition, a recessed portion 430 is formed on the sliding portion 260b to be connected to the connecting groove 216. The limiting portion 431 matches the recessed portion 260b1, and the length of the limiting portion 431 is less than the length of the connecting groove 216; the limiting portion 431 will limit the rotation of the filter element handle 250 in the storage state, and the filter element handle 250 can release the restriction of its rotation state by the limiting portion 431 through sliding; the sliding portion 260b will cooperate with the filter element cover 210 to further limit the sliding direction of the filter element handle 250, and reduce the distance between the filter element handle 250 and the filter element cover 210, so that the filter element handle 250 is not easy to shake left and right.

Furthermore, two limiting portions 431 are symmetrically arranged on the filter bottle cover 400, and the two sliding portions 260b of the filter element handle 250 are both provided with a recessed portion 260b1; more specifically, the limiting portion 431 has a limiting platform 432, and the limiting platform 432 will cooperate with the recessed portion 260b1, and when the limiting portion 431 and the sliding portion 260b are in a matched state, the up and down rotation of the filter element handle 250 is restricted; and when the sliding portion 260b slides relative to the limiting portion 431 so that the sliding portion 260b and the limiting portion 431 are out of matching relationship, the filter element handle 250 can rotate up and down; accordingly, the filter element handle 250 can also be slid again to make the sliding portion 260b and the limiting portion 431 re-matched, so that the limiting portion 431 continues to restrict the up and down rotation of the filter element handle 250.

The water flow path arrangement of the composite filter element provided by the present invention is described below in combination with the above-mentioned components.

2, 3 and 9, taking the first filter assembly 200 including the pre-filter element 214 and the post-filter element 215 as an example, in this embodiment, the pre-filter element 214 is hollowed to form a first water outlet cavity 5a, and a first water-passing gap is formed between the central tube 340 and the pre-filter element 214. After the water flows into the first water-passing gap, it will flow through the pre-filter element 214 under its own pressure and enter the first water outlet cavity 5a, and then the water flows out to form the first clean water, thereby completing the filtering process of the pre-filter element 214;

A second water gap 5c is formed between the reverse osmosis filter element 310 and the filter bottle 100. The first purified water filtered by the pre-filter element 214 will flow through the external booster pump for boosting, thereby increasing the pressure of the water flow, and then the first purified water enters the second water gap 5c; the water flow in the second water gap 5c will pass through the reverse osmosis filter element 310 under pressure, so that the reverse osmosis filter element 310 can filter out soluble impurities such as metal ions in the water; a reverse osmosis wastewater cavity is opened on the filter bottle cover 400, and the reverse osmosis wastewater cavity is communicated with the installation space between the filter bottle 100 and the central tube 340; the reverse osmosis filter element 310 and the central tube 340 are connected. The tube 340 fits tightly, so that after the water flows into the reverse osmosis filter element 310, only a part of the water will pass through the reverse osmosis filter element 310 under the action of pressure, while the remaining part of the water flow cannot completely pass through the reverse osmosis filter element 310 and passes through the reverse osmosis top cover 320 and then is discharged from the filter bottle 100 through the reverse osmosis waste water cavity; reverse osmosis filtration is based on the different rates at which solutes such as salt ions and water molecules pass through the reverse osmosis filter membrane to separate solutes in water, so that the water that does not pass through the reverse osmosis filter element 310 and enters the reverse osmosis waste water cavity will take away most of the impurity solutes such as salt ions, thereby ensuring the overall filtering effect of the second filter component 300.

In addition, a first water through hole 340a is provided on the central tube 340, and a second water through hole 270a is provided on the partition 270. The second water through hole 270a is communicated with the first water through hole 340a. The first water through hole 340a is adjacent to the reverse osmosis filter element 310. The first purified water passing through the reverse osmosis filter element 310 will be formed into second purified water. The second purified water will enter the partition 270 through the first water through hole 340a and the second water through hole 270a.

The second purified water entering the partition 270 will flow through the post-filter element 215 under pressure. The post-filter element 215 is also hollow, and the cavity of the post-filter element 215 forms a second filter chamber 5d. The second filter chamber 5d is connected to the water outlet pipe 220, so that the second purified water will enter the second filter chamber 5d after passing through the post-filter element 215, and then be discharged through the water outlet pipe 220.

2, 3 and 9, specifically, the filter bottle cover 400 is provided with a first water inlet 411, a second water inlet 413, a first water outlet 412, a second water outlet 414 and a wastewater outlet 415; and the first water inlet 411, the second water inlet 413, the first water outlet 412, the second water outlet 414 and the wastewater outlet 415 are arranged in parallel on the filter bottle cover 400 and each is connected to the filter element cover 210 or the installation space through a water channel; wherein, the first water inlet 411 is connected to the first water flow gap, the second water inlet 413 is connected to the second water flow gap 5c, the first water outlet 412 is connected to the first water outlet chamber 5a, the second water outlet 414 is connected to the outlet pipe 220, and the wastewater outlet 415 is connected to the installation space.

The filter element cover 210 includes a first water inlet 211, a first water outlet 212 and a second water outlet 213. The first water inlet 211 is connected to the first water inlet 411 and the first water gap, respectively. The first water outlet 212 is connected to the first water outlet 412 and the first water outlet chamber 5a, respectively. The second water outlet 213 is connected to the second water outlet 414 and the water outlet, respectively.

2, 3 and 9, in actual use, raw water (unfiltered water, such as tap water) enters the first water inlet 211 through the first water inlet 411, is filtered by the pre-filter 214, and then is discharged from the first water outlet 412 through the first water outlet 212 to form the first purified water; the first purified water is pressurized, and then enters the second water gap 5c through the second water inlet 413, and part of the first purified water is filtered by the reverse osmosis filter 310 to form the second purified water, and The remaining first clean water is discharged from the filter element through the wastewater outlet 415; the second clean water enters the partition 270 through the first water hole 340a and the second water hole 270a. The post-filter element 215 in the partition 270 will filter the second clean water to form pure water. The post-filter element 215 is hollow. The pure water enters the hollow part of the post-filter element 215 and then passes through the outlet pipe 220 to the second water outlet 213, and then is discharged from the filter bottle 100 through the second water outlet 414.

Correspondingly, in order to connect the internal waterway of the composite filter element with the outside, that is, to connect the first water inlet 411, the second water inlet 413, the first water outlet 412, the second water outlet 414 and the wastewater outlet 415 with the external waterway (the waterway in the relevant equipment), an adapter 50 is further provided on the filter bottle cover 400; specifically, there are 5 adapters 50, which are respectively connected to the first water inlet 411, the second water inlet 413, the first water outlet 412, the second water outlet 414 and the wastewater outlet 415; in the utility model, the adapter 50 connected to the first water inlet 411 is a front water inlet adapter 50a; the adapter 50 connected to the first water outlet 41 2 is a pre-water outlet adapter 50b; the adapter 50 connected to the second water inlet 413 is a reverse osmosis water inlet adapter 50c; the adapter 50 connected to the second water outlet 414 is a pure water outlet adapter 50d; the adapter 50 connected to the waste water outlet 415 is a waste water outlet adapter 50e; with reference to the above-mentioned settings of the pre-filter element 214 and/or the post-filter element 215, when only the pre-filter element 214 or the post-filter element 215 or the positions of both change or only the reverse osmosis filter element 310 is present, the number and type of adapters 50 also change with the specific settings of the pre-filter element 214 and/or the post-filter element 215.

4 and 9 , in order to install the adapter 50 on the composite filter element, a plurality of adapter grooves 410 for connecting the adapter 50 are provided on the filter bottle cover 400. Specifically, the plurality of adapter grooves 410 are respectively connected to the first water inlet 411, the second water inlet 413, the first water outlet 412, the second water outlet 414 and the waste water outlet 415, and the adapter 50 is embedded in the adapter groove 410 by interference fit.

The adapter 50 includes a connecting end 51 and a plug-in end 52, and the plug-in end 52 is connected to the adapter groove 410, that is, the plug-in end 52 and the adapter groove 410 are interference fit, and the connecting end 51 is used to connect to an external waterway; and in order to complete the interference fit between the plug-in end 52 and the adapter groove 410, and to reduce the possibility of water overflowing from the connection between the adapter groove 410 and the adapter 50, at least one sealing groove 52a is provided on the plug-in end 52 of the adapter 50, and a sealing ring 52b is provided in the sealing groove 52a, and the outer ring of the sealing ring 52b will conflict with the groove wall of the adapter groove 410, thereby improving the stability of the connection between the adapter 50 and the adapter groove 410 and reducing the possibility of water overflow.

Specifically, two sealing grooves 52a are provided on the plug-in end 52, and sealing rings 52b are provided in the two sealing grooves 52a; and in order to facilitate the insertion of the plug-in end 52 into the adapter groove 410, that is, to facilitate the installer to exert force, the length direction of the plug-in end 52 is perpendicular to the length direction of the connecting end 51, so that during installation, the installer can use the connecting end 51 to insert the plug-in end 52 into the adapter groove 410. In order to improve the overall structural strength of the adapter 50, a reinforcing rib 53 is provided between the plug end 52 and the connecting end 51. The provision of the reinforcing rib 53 makes it difficult for the plug end 52 and the connecting end 51 to break. In order to improve the adaptability of the overall structure and make it difficult for the provision of the reinforcing rib 53 to affect the installation of the adapter 50, a matching opening 410a for the reinforcing rib 53 to be embedded is provided on the slot of the adapter slot 410. The provision of the reinforcing rib 53 and the matching opening 410a also has an anti-foolproof function, so that the adapter 50 can only be embedded in the adapter slot 410 in one posture. Accordingly, a plurality of reinforcing ribs 53 can be provided on the adapter 50 to strengthen the strength between the plug end 52 and the connecting end 51. The principle is the same as above and will not be repeated here.

In order to ensure the water outlet efficiency, the water flow will be pressurized before entering the composite filter element, so the water entering the composite filter element will have a greater pressure; the adapter 50 serves as the connecting part 611 between the composite filter element and the external water channel (the water channel in the related equipment), and the adapter 50 may fall off the filter element housing due to the pressure brought by the water flow.

Therefore, the composite filter element proposed in the present invention further includes a limiting strip 440 , which is used to limit the adapter 50 .

10 to 13 , in the present invention, the limiting strip 440 includes a main body 440 a in a strip shape, and the main body 440 a is provided with a plurality of limiting protrusions 440 b at intervals along its length direction, and the limiting protrusions 440 b cooperate with the adapter 50 to complete the limiting of the adapter 50 .

Specifically, the filter bottle cover 400 is provided with an installation groove 441 for installing the limit strip 440, and the limit protrusion 440b passes through the bottom of the installation groove 441 to limit the adapter 50; accordingly, the bottom of the installation groove 441 is provided with a limit groove 442, the limit groove 442 is communicated with the adapter groove 410, and the limit protrusion 440b is inserted into the limit groove 442 to limit the adapter 50; further, in order to complete the cooperation between the limit protrusion 440b and the adapter 50, the adapter 50 is provided with a limit protrusion that cooperates with the limit protrusion 440b cooperates with the interlocking groove 54, so that when the limiting protrusion 440b is inserted into the limiting groove 442, it will be embedded in the interlocking groove 54; and when the adapter 50 tends to come out of the adapter groove 410, the interlocking groove 54 will transfer the force to the limiting protrusion 440b, and the cooperation between the limiting protrusion 440b and the limiting groove 442 will offset this force, so that the cooperation between the limiting protrusion 440b and the interlocking groove 54 will suppress the tendency of the adapter 50 to come out of the adapter groove 410, thereby completing the limitation of the adapter 50.

In order to ensure the limiting effect of the limiting protrusion 440b on the adapter 50, the insertion direction of the limiting protrusion 440b is perpendicular to the insertion direction of the adapter 50 into the adapter groove 410, so that when the adapter 50 has a tendency to come out, the force applied by the adapter 50 on the limiting protrusion 440b is perpendicular to the insertion direction of the limiting protrusion 440b. Further, when the adapter 50 has a tendency to come out, the limiting protrusion 440b does not have a tendency to come out of the limiting groove 442 due to the tendency of the adapter 50 to come out, thereby ensuring the limiting effect of the limiting protrusion 440b on the adapter 50.

It should be noted that a single adapter 50 can cooperate with a single limiting protrusion 440b, and a single adapter 50 can also cooperate with two limiting protrusions 440b; for example, when there is only one adapter 50 on the filter bottle cover 400, only one limiting protrusion 440b can be set on the main body 440a of the limiting strip 440 to limit the adapter 50; two limiting protrusions 440b can also be set, and the two limiting protrusions 440b limit the adapter 50 on both sides respectively; when there are two adapters 50 on the filter bottle cover 400, only two limiting protrusions 440b can be set to limit the two adapters 50 respectively; three limiting protrusions 440b can also be set to limit the two adapters The connector 50 is limited, specifically, among the three limiting protrusions 440b, the central limiting protrusion 440b cooperates with the two adapters 50 at the same time, and the limiting protrusions 440b on both sides cooperate with the two adapters 50 respectively; four limiting protrusions 440b can be set to cooperate with the two adapters 50, and the limiting protrusions 440b on both ends of the main body 440a are respectively grouped with adjacent limiting protrusions 440b to limit one adapter 50 together, so that the two groups of limiting protrusions 440b can cooperate with the two adapters 50; when there are multiple adapters 50, the relationship between the number of limiting protrusions 440b and the adapter 50 can be selected and derived based on the above examples.

Based on the above, taking the utility model with 5 adapters 50 as an example, the limit strip 440 in the utility model is provided with 6 limit protrusions 440b, and the 6 limit protrusions 440b are formed into two groups except for the two limit protrusions 440b arranged at the two ends of the main body 440a of the limit strip 440, and the two adjacent limit protrusions 440b are respectively matched with two adapters 50, and the two limit protrusions 440b arranged at the two ends of the main body 440a of the limit strip 440 are only matched with one adapter 50 respectively.

It should be emphasized that, in summary, the adapter 50 can be limited by only one limiting protrusion 440b, or by two limiting protrusions 440b; the limiting protrusion 440b can limit only one adapter 50, or it can limit two adapters 50 at the same time; the selection of the number of adapters 50 and limiting protrusions 440b will not be repeated here.

On the basis of the above, referring to Figures 15 to 17, in order to ensure that the limit strip 440 as a whole does not separate from the filter bottle cover 400 during the filtration process of the composite filter element, a decorative cover 600 is further provided on the filter bottle cover 400. The decorative cover 600 is slidably connected to the filter bottle cover 400, and the bottom surface of the decorative cover 600 will conflict with the limit strip 440 when the limit strip 440 as a whole tends to come out, so that the decorative cover 600 can fix the limit strip 440 as a whole on the filter bottle cover 400.

In addition, the detachable setting of the first filter component 200 will inevitably leave a certain gap between the filter element cover 210 and the filter bottle cover 400. During the filtering process of water by the composite filter element, fine impurities such as dust may pass through the snap-in groove 420 and enter the gap, thereby contaminating the water in the composite filter element.

Therefore, the decorative cover 600 proposed in the utility model can also be used to cover the snap-in groove 420, so that the setting of the decorative cover 600 can effectively reduce the possibility of fine impurities such as dust entering the composite filter element through the snap-in groove 420 during the filtration process of the composite filter element, thereby reducing the possibility of water in the composite filter element being contaminated.

Correspondingly, the decorative cover 600 is extended and bent on two opposite sides to form a first fitting portion 610, and the first fitting portion 610 is slidably fitted with the filter bottle cover 400; specifically, the sliding direction of the first fitting portion 610 is parallel to the top surface of the decorative cover 600, so that the sliding of the first fitting portion 610 can cause relative displacement between the top surface and the filter bottle cover 400, so that the sliding fit between the first fitting portion 610 and the filter bottle cover 400 can determine whether the decorative cover 600 blocks the snap-in groove 420, that is, when the first filter component 200 needs to be removed from the filter bottle 100, the decorative cover 600 can be slid open to avoid the decorative cover 600 from hindering the disassembly and assembly of the first filter component 200, and after the disassembly and assembly is completed, the sliding fit between the first fitting portion 610 and the filter bottle cover 400 can be used to allow the decorative cover 600 to cover the snap-in groove 420 again, thereby reducing the possibility of fine impurities such as dust entering the interior of the composite filter element through the snap-in groove 420.

In this embodiment, a connecting portion 611 is provided at the bottom of the first matching portion 610, and a sliding groove 450 is provided on the filter bottle cover 400 for the connecting portion 611 to slide. The cooperation between the connecting portion 611 and the sliding groove 450 will complete the sliding cooperation between the decorative cover 600 and the filter bottle cover 400. In order to allow the decorative cover 600 to slide on the filter bottle cover 400 while reducing the possibility that the decorative cover 600 will fall off the filter bottle cover 400 after installation and lose its shielding function, buckle platforms 612 are formed on the opposite sides of the two connecting portions 611, and a buckle groove 450a that matches the buckle platform 612 is provided on one side of the sliding groove 450. When the connecting portion 611 matches with the sliding groove 450, the buckle platform 612 will also match with the buckle groove 450a, that is, the buckle platform 612 will slide in the buckle groove 450 as the connecting portion 611 slides in the sliding groove 450. 0a; when the connection portion 611 is matched with the sliding groove 450, the buckle platform 612 and the buckle groove 450a will also be matched, and the matching of the buckle platform 612 and the buckle groove 450a will limit the movement of the decorative cover 600 in the axial direction of the composite filter element. It can be simply understood that the matching of the buckle platform 612 and the buckle groove 450a will limit the up and down movement of the decorative cover 600, so that the decorative cover 600 can only be removed from the filter element cover 210 by sliding, thereby improving the stability of the decorative cover 600 after installation and ensuring the shielding effect of the decorative cover 600 on the snap-on groove 420.

Combined with the above description about the adapter 50, a plurality of adapters 50 are arranged on the filter bottle cover 400, and the plurality of adapters 50 are arranged in parallel; similarly, in order to reduce the possibility of dust falling on the adapter 50 and contaminating the water in the composite filter element; and also to protect the adapter 50, the decorative cover 600 includes a main body 620 and a covering portion 630, the main body 620 is used to cover the snap-in groove 420, and the covering portion 630 is used to cover a plurality of adapters 50.

The cover portion 630 is connected to the main body 620, and the end of the main body 620 facing away from the cover portion 630 is in an arc shape to match the overall shape of the filter element cover 210, so as to better cover the snap-in groove 420; the cover portion 630 includes a top plate 630a, and the relative height of the bottom surface of the top plate 630a is lower than the bottom surface of the main body 620, so that a step surface 631 is formed between the bottom surface of the top plate 630a and the bottom surface of the main body 620, and when installing the decorative cover 600, the step surface 631 will conflict with the filter bottle cover 400 after the decorative cover 600 is installed in place, thereby avoiding excessive slippage of the decorative cover 600 on the filter bottle cover 400, thereby reducing the possibility of damage to the decorative cover 600 and the filter bottle cover 400 due to the coordinated installation of the two. Correspondingly, the relative height of the top surface of the top plate 630a is also lower than the top surface of the main body 620, so that a step surface 631 is formed between the top surface of the top plate 630a and the top surface of the main body 620. The setting of the step surface 631 reduces the possibility of overall deformation of the decorative cover 600 and further enhances the overall structural strength of the decorative cover 600.

In addition, the setting of the cover setting part 630 can complete the fixation of the decorative cover 600 to the limiting strip 440 as a whole. When the limiting strip 440 tends to fall off the filter bottle cover 400, the limiting strip 440 will conflict with the bottom surface of the top plate 630a, so that the decorative cover 600 can fix the limiting strip 440 on the filter bottle cover 400.

In this embodiment, the top plate 630a has four side surfaces, one side surface of the top plate 630a is connected to the main body 620, thereby forming two step surfaces 631 between the top plate 630a and the main body 620; the remaining three side surfaces of the top plate 630a are extended and bent, thereby forming a cover portion 630 together with the top plate 630a to cover the adapter 50.

In order to further improve the overall structural strength of the decorative cover 600, a reinforcing portion 632 is provided on the bottom surface of the top plate 630a, and one side of the reinforcing portion 632 is connected to the main body 620, so that the provision of the reinforcing portion 632 will further improve the overall structural strength of the decorative cover 600, that is, further reduce the possibility of bending between the main body 620 of the decorative cover 600 and the cover portion 630; and in order to prevent the reinforcing portion 632 from hindering the installation of the decorative cover 600, that is, in order to prevent the reinforcing portion 632 from colliding with the filter bottle cover 400 during the sliding process of the decorative cover 600, a chamfer 632a is provided on the reinforcing portion 632, and the chamfer 632a is used to make way for the filter bottle cover 400, so that the reinforcing portion 632 is not easy to collide with the filter bottle cover 400 during the sliding process of the decorative cover 600, thereby ensuring the smooth sliding process of the decorative cover 600.

However, it should be noted that the end of the reinforcing portion 632 can contact the filter bottle cover 400 after the decorative cover 600 and the filter bottle cover 400 have completed the sliding fit, and when the decorative cover 600 still has a sliding tendency at this time, it will conflict with the filter bottle cover 400, thereby reducing the possibility of excessive sliding of the decorative cover 600 on the filter bottle cover 400 and ensuring the integrity of the overall structure. In order to further improve the adaptability between the reinforcing portion 632 and the filter bottle cover 400, a clearance groove 633 is also provided on the reinforcing portion 632, and the clearance groove 633 is also used to make way for the filter bottle cover 400.

In addition, the entire decorative cover 600 can be manufactured by an integrated molding process, or by other split molding processes.

The present utility model also proposes a device with a water purification function, which includes the above-mentioned composite filter element, and the specific structure of the composite filter element refers to the above-mentioned embodiment; it is necessary to give examples to illustrate that the device with a water purification function can be a water purifier, a water purifier, a soft-purifier all-in-one machine, a purifier-heater all-in-one machine and other devices with a water purification function; in addition, since the present device with a water purification function adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly/indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims (12)

1. A composite filter element, comprising

A filter bottle cap;

The filter bottle cap is provided with a plurality of adapter joints, wherein the adapter joints are used for water inflow and/or water outflow, and the filter bottle cap is provided with an adapter groove for the adapter joints to connect;

The limiting strip is arranged on the filter bottle cover and is used for limiting the adapter from falling out of the adapter groove;

the decorative cover is arranged on the filter bottle cover and used for limiting the limit strips from falling off from the filter bottle cover.

2. The composite filter element according to claim 1, wherein the filter cap is provided with a mounting groove for mounting the limiting strip, the limiting strip comprises a strip-shaped main body part, a plurality of limiting protrusions are arranged on the main body part at intervals along the length direction of the main body part, a plurality of limiting grooves are formed in the groove bottom of the mounting groove, and the limiting protrusions are inserted into the limiting grooves to limit the adapter.

3. The composite filter element of claim 2, wherein the spacing projections are in one-to-one correspondence with the spacing grooves, and wherein the spacing grooves are in communication with the transition grooves.

4. A composite filter element as claimed in claim 3 wherein said adapter is provided with a mating recess for mating with said retention tab.

5. The composite filter element of any one of claims 1 to 4, wherein the decorative cover is slidably attached to the filter bottle cap, and wherein a bottom surface of the decorative cover is configured to limit the limit bar.

6. The composite filter element of claim 5, wherein the decorative cover is folded and extended on opposite sides thereof to form a first mating portion, the first mating portion slidably mating with the filter cap.

7. The composite filter element of claim 6, wherein a connecting portion is provided at a bottom of the first mating portion, and a sliding groove for sliding the connecting portion is provided on the filter cap.

8. The composite filter element of claim 7, wherein two opposite sides of the connecting portion are each formed with a locking tab, a side of the connecting portion is provided with a locking slot that mates with the locking tab, and the mating of the locking tab and the locking slot is used to limit the movement of the decorative cover in the axial direction of the composite filter element.

9. The composite filter element of claim 5, wherein the decorative cover comprises a main body and a cover portion, the cover portion being coupled to the main body, the cover portion being configured to cover a plurality of the adapters.

10. The composite filter element of claim 9, wherein the cover comprises a top plate having a bottom surface that is relatively lower than the bottom surface of the body, the bottom surface of the top plate and the bottom surface of the body defining a stepped surface therebetween.

11. A composite filter element as claimed in claim 9, wherein an end of the main body facing away from the shroud is arcuate.

12. An apparatus with water purification function, comprising a composite filter element according to any one of claims 1 to 11.