CN218076973U - Filter screen subassembly and filter equipment - Google Patents

Abstract

The utility model discloses a filter screen subassembly and filter equipment, the filter screen subassembly includes: a plurality of screens. A plurality of filter screens are arranged along the thickness direction of the filter screen, a plurality of through holes and a plurality of blind holes are formed in each filter screen, two adjacent filter screens are respectively a first filter screen and a second filter screen, and at least one through hole of the first filter screen is opposite to at least one blind hole of the second filter screen along the thickness direction of the filter screen. From this, through setting up a plurality of filter screens so that the through-hole of adjacent first filter screen is relative with the blind hole of second filter screen, so that the air current can directly get into the blind hole of relative second filter screen after the through-hole of first filter screen, the through-hole that flows to the outside to the blind hole of second filter screen stops and guides again, through this, can increase the time of air current inflow in the filter screen, so that the air current can fully contact with the filter screen, thereby increase the absorption of the particulate matter of filter screen in to the air current, can effectively improve the filter effect of filter screen subassembly, improve the quality of air after filtering.

Description

Filter screen subassembly and filter equipment

Technical Field

The utility model belongs to the technical field of the air purification technique and specifically relates to a filter screen subassembly and filter equipment are related to.

Background

Along with the improvement of the living standard of people and the enhancement of environmental protection health consciousness, frequent haze weather causes the worry of people about air quality. The structure and materials of the filtering component for filtering the air are continuously innovated, but the current air circulation in the filtering component is limited, the filtering effect of the filtering component is poor, and the air quality is still not high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a filter screen assembly, which can increase the flow rate of the air flow and reduce the air flow resistance inside the air flow.

Another object of the present invention is to provide a filter device, which includes the filter screen assembly of the above embodiment.

According to the utility model discloses filter screen subassembly of first aspect embodiment, include: a plurality of filter screens, it is a plurality of the filter screen is followed the thickness direction of filter screen arranges, every be formed with a plurality of through-holes and a plurality of blind holes on the filter screen, adjacent two the filter screen is first filter screen and second filter screen respectively, at least one of first filter screen the through-hole with at least one of second filter screen the blind hole is followed the thickness direction of filter screen is relative.

According to the utility model discloses a filter screen subassembly, through setting up a plurality of filter screens so that the through-hole of adjacent first filter screen is relative with the blind hole of second filter screen, so that the air current can directly get into the blind hole of relative second filter screen after the through-hole of first filter screen, at the blind hole of second filter screen stop with guide the through-hole of outside flow direction second filter screen to the back, through like this, can increase the time that the air current flows through in the filter screen, so that the air current can be abundant with the filter screen contact, thereby increase the absorption of filter screen to the particulate matter in the air current, can effectively improve the filter effect of filter screen subassembly, improve the quality of air after filtering.

In some embodiments, the two side surfaces of the filter screen in the thickness direction are respectively a first surface and a second surface, at least one of the blind holes penetrates through the first surface, and the cross-sectional area of at least one of the blind holes is gradually reduced along the direction from the first surface to the second surface.

In some embodiments, an inner surface of at least one of the blind holes is formed as a curved or tapered surface.

In some embodiments, at least one of the blind holes is formed by a portion of the first surface of the filter screen being recessed in a direction toward the second surface of the filter screen.

In some embodiments, at least one extension portion is provided on a surface of at least one of the filter screens in a thickness direction, both ends of the extension portion are open, one end of the extension portion is connected to a sidewall of the through hole, and the other end of the extension portion extends in a direction away from the filter screen.

In some embodiments, the cross-sectional area of the extension gradually decreases from the one end of the extension toward the other end of the extension.

In some embodiments, a depth of the blind hole in a thickness direction of the filter screen is less than a height of the extension in the thickness direction of the filter screen.

In some embodiments, the other end of the extension is opposite to the blind hole of the adjacent filter screen in a thickness direction of the filter screen.

In some embodiments, each the filter screen is provided with a plurality of through hole groups and a plurality of blind hole groups, the through hole groups and the blind hole groups are arranged in a staggered manner along a first direction, each the through hole group comprises a plurality of through holes arranged along a second direction vertical to the first direction at intervals, each the blind hole group comprises a plurality of blind holes arranged along the second direction at intervals, and each the through holes and the blind holes of the blind hole groups are arranged along the first direction at staggered manner or in a one-to-one correspondence.

In some embodiments, each of the through holes and each of the blind holes has a shape of a circle, an ellipse, or a polygon, respectively.

In some embodiments, the plurality of the filter screens are respectively PP nonwoven fabric, PE nonwoven fabric or PET nonwoven fabric.

In some embodiments, each of the plurality of screens is an electrostatic electret nonwoven fabric.

According to the utility model discloses filter equipment of second aspect embodiment, including the filter screen subassembly of any one of the above-mentioned embodiments.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of a screen assembly according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a screen assembly according to an embodiment of the present invention.

Fig. 3 is a schematic view of a filter screen according to an embodiment of the present invention.

Reference numerals:

a screen assembly 100;

a filter screen 10;

a first surface 11; a second surface 12; a through hole 13; a blind hole 14;

an extension 15; a group of through holes 16; a blind hole group 17;

a first direction A; a second direction B; a third direction C.

Detailed Description

Embodiments of the present invention are described in detail below, the embodiments described with reference to the drawings being exemplary, and a screen assembly 100 according to embodiments of the present invention is described below with reference to fig. 1-3, the screen assembly 100 including: a plurality of screens 10. The width direction of the filter screen 10 is a first direction a, the length direction of the filter screen 10 is a second direction B, and the thickness direction of the filter screen 10 is a third direction C.

Specifically, as shown in fig. 1 and 2, a plurality of filter screens 10 are arranged along the thickness direction of the filter screen 10 (four filter screens are shown in the figures), each filter screen 10 is formed with a plurality of through holes 13 and a plurality of blind holes 14, where it should be noted that the through holes 13 refer to a through hole-like structure that completely penetrates through the thickness direction of the filter screen 10, that is, air can pass through the through holes 13 from one side of the through holes 13 to the other side; the blind holes 14 refer to a recessed pocket structure formed in the thickness direction of the filter screen 10, i.e., the blind holes 14 are not air-penetrable.

Two adjacent filter screens 10 are first filter screen and second filter screen respectively, and at least one through-hole 13 of first filter screen is relative along the thickness direction of filter screen 10 with at least one blind hole 14 of second filter screen. When passing through the filter screen assembly 100, the air flow formed by the air flows at least partially from the through holes 13 of the first filter screen to the blind holes 14 opposite to the second filter screen, and the air flow flows between the first filter screen and the second filter screen along the circumferential direction of the blind holes 14 and flows out from the through holes 13 of the second filter screen or flows to the next filter screen 10.

According to the utility model discloses filter screen subassembly 100, through setting up a plurality of filter screens 10 so that the through-hole 13 of adjacent first filter screen is relative with the blind hole 14 of second filter screen, so that the air current can directly get into the blind hole 14 of relative second filter screen after the through-hole 13 of first filter screen, the through-hole 13 of outside flow direction second filter screen after blockking and the guide of the blind hole 14 of second filter screen again, through this, can increase the time that the air current flowed through in filter screen 10, so that the air current can fully contact with filter screen 10, thereby increase the absorption of filter screen 10 to the particulate matter in the air current, can effectively improve filter screen subassembly 100's filter effect, improve the quality of air after filtering.

In some embodiments, as shown in fig. 2, the two side surfaces of the filter screen 10 in the thickness direction are a first surface 11 and a second surface 12, respectively, at least one blind hole 14 penetrates through the first surface 11, and the cross-sectional area of the at least one blind hole 14 is gradually reduced in a direction from the first surface 11 to the second surface 12. Therefore, the cross-sectional area of the blind hole 14 gradually decreases from the first surface 11 to the second surface 12 in the thickness direction, that is, the side wall of the blind hole 14 forms an inclined surface, the airflow entering the blind hole 14 can be smoothly guided to flow between two adjacent filter screens 10 along the side wall of the blind hole 14, thereby increasing the flow path of the airflow, improving the filtering effect, reducing the noise generated by the airflow obstruction in the airflow flowing process and having good silence performance.

In some embodiments, the inner surface of the at least one blind hole 14 is formed as a curved or tapered surface. So set up, the air current that flows in the blind hole 14 can be dispersed along curved surface or conical surface between to two adjacent filter screens 10 and go out, is convenient for between the gas flow direction filter screen 10 to make gas can fully contact with filter screen 10, can reduce the flow resistance of air current on the 14 internal surfaces of blind hole, so that the distribution between the filter screen 10 is more even in the air current.

In some embodiments, the at least one blind hole 14 is formed by a portion of the first surface 11 of the filter screen 10 being recessed in a direction toward the second surface 12 of the filter screen 10. Therefore, the blind holes 14 are formed by the first surface 11 of the filter screen 10 being recessed towards the second surface 12, the forming mode is simple, and the blind holes 14 are part of the filter screen 10, so that the structural strength of the blind holes 14 can be increased, the integral strength of the filter screen 10 is improved, damage is prevented, or noise and other conditions caused by insufficient strength, shaking and the like occur.

In some embodiments, as shown in fig. 2 and 3, at least one extension 15 is provided on one surface of at least one filter screen 10 in the thickness direction, both ends of the extension 15 are open, one end of the extension 15 is connected to the side wall of the through hole 13, and the other end of the extension 15 extends away from the filter screen 10. For example, on each of the adjacent two first and second screens, there is provided an extension 15, and one end of the extension 15 of the first screen adjacent to the second surface 12 is connected to the side wall of the through hole 13 and extends in the thickness direction of the screen 10 toward the second screen, so that the extension 15 forms a shape resembling the side of a cone. The extension 15 may be stamped from a portion of the first surface 11 of the screen 10 toward the second surface 12. Therefore, at least one extension part 15 is arranged on one side surface of at least one filter screen 10 in the thickness direction, so that the guidance of the filter screen 10 to the air flow can be increased, the contact area between the air flow and the filter screen 10 is increased, the adsorption of the filter screen 10 to impurities in the air flow is further improved, and the filtering effect is improved.

In some embodiments, the cross-sectional area of the extension 15 gradually decreases from one end of the extension 15 toward the other end of the extension 15. One end of the extension 15 is disposed adjacent to the first surface 11 and the other end of the extension 15 is disposed adjacent to the second surface 12, the cross-sectional area of the extension 15 gradually decreasing from the first surface 11 to the second surface 12. Therefore, the cross-sectional area of the one end of the extending portion 15 is large, so that the inflow amount of air can be ensured, the cross-sectional area of the other end of the extending portion 15 is small, so that the flowing speed of the air flow entering the through hole 13 can be increased, the air flow can flow to the next adjacent filter screen 10, the filtering efficiency of the filter screen assembly 100 is increased, the air can be smoothly guided to accurately reach the position of the corresponding blind hole 14 of the adjacent filter screen 10 after passing through the through hole 13, and the air path is prevented from being disordered to cause uneven filtering effect.

Optionally, the depth of the blind hole 14 in the thickness direction of the filter screen 10 is smaller than the height of the extension 15 in the thickness direction of the filter screen 10. It will be appreciated that the bottom of the blind hole 14 is spaced from the first surface 11 by a distance less than the other end of the extension 15, and that when two adjacent screens 10 are stacked, at least part of the extension 15 of the first screen along the length of the screen 10 rests against the second screen, and the end of the blind hole 14 of the first screen remote from the first surface 11 is spaced from the first surface 11 of the second screen. From this, in the thickness direction of filter screen 10, the degree of depth of blind hole 14 is less than the height of extension 15 to in the space between the extension 15 that increases adjacent, be convenient for the end of extension 15 and adjacent filter screen 10, so that the through-hole 13 that the air current can be smoothly followed to be equipped with on one of two adjacent filter screens 10 flows to the through-hole 13 that is equipped with on the other, guarantees the smooth circulation of air current in filter screen subassembly 100.

In some embodiments, referring to fig. 2, the other end of the extension 15 adjacent to the adjacent filter screen 10 is opposite to the blind hole 14 of the adjacent filter screen 10 in the thickness direction of the filter screen 10. After two adjacent filter screens 10 are stacked, the extension 15 of one filter screen 10 is opposite to the blind hole 14 of the other filter screen 10, and the airflow passing through the extension 15 flows to the blind hole 14, flows between the two adjacent filter screens 10 through the divergence of the blind hole 14 and flows out from the through hole 13 of the other filter screen 10. Therefore, the extending portion 15 is opposite to the blind hole 14 of the adjacent filter screen 10, so that the airflow can smoothly flow to the blind hole 14, the flowing path of the airflow is increased from the inside of the blind hole 14 to the space between the two adjacent filter screens 10, the contact time of the airflow and the filter screens 10 is increased, the airflow can be fully contacted with the filter screens 10, and the filtering effect of the filter screens 10 on the airflow is improved.

In some embodiments, in combination with fig. 3, each filter screen 10 is provided with a plurality of through hole groups 16 and a plurality of blind hole groups 17 (for example, in fig. 1, the filter screen 10 is provided with 10 blind holes 14 and 9 through holes 13 from a first direction a, and is provided with 5 blind holes 14 and 4 through holes 13 from a second direction B), the plurality of through hole groups 16 and the plurality of blind hole groups 17 are arranged in a staggered manner along the first direction a, each through hole group 16 comprises a plurality of through holes 13 arranged at intervals along the second direction B perpendicular to the first direction a, each blind hole group 17 comprises a plurality of blind holes 14 arranged at intervals along the second direction B, and the plurality of through holes 13 of each through hole group 16 and the plurality of blind holes 14 of each blind hole group 17 are arranged in a staggered manner or in a one-to-one correspondence along the first direction a. It should be noted that, the staggered arrangement means that the through holes 13 arranged at intervals along the first direction a and the blind holes 14 arranged at intervals along the first direction a are arranged in a staggered manner in the second direction B, and the one-to-one correspondence means that the through holes 13 arranged at intervals along the first direction a and the blind holes 14 arranged at intervals along the first direction a are arranged relatively in the second direction B, that is, the through holes 13 and the blind holes 14 are arranged at intervals in sequence in the second direction B. For example, the plurality of through holes 13 and the plurality of blind holes 14 are arranged at intervals in both the first direction a and the second direction B, when the plurality of blind holes 14 and the plurality of through holes 13 are arranged alternately in the first direction a, two through holes 13 adjacent to each blind hole 14 may be arranged in an isosceles triangle, and when the plurality of blind holes 14 correspond to the plurality of through holes 13 one by one in the first direction a, the number of the plurality of through holes 13 and the plurality of blind holes 14 in the first direction a is the same. Here, for example, the plurality of through holes 13 and the plurality of blind holes 14 are arranged alternately in the first direction a, and a line connecting centers of the plurality of through holes 13 and a line connecting centers of the plurality of blind holes 14 are arranged in parallel in the first direction a. Therefore, the plurality of through holes 13 and the plurality of blind holes 14 are formed in the filter screen 10, the plurality of through holes 13 and the plurality of blind holes 14 are arranged in a staggered mode or in a one-to-one correspondence mode along the first direction A, the flow rate of airflow in the filter screen assembly 100 can be increased, the filtering efficiency of the filter screen assembly 100 is improved, and the resistance of airflow circulation is reduced.

Alternatively, the shape of each through hole 13 and each blind hole 14 is circular, oval, oblong, polygonal, or the like, respectively. Therefore, the shapes of the through holes 13 and the blind holes 14 are not limited, and in order to ensure the circulation of the air flow, the shapes of the through holes 13 and the blind holes 14 can be kept the same, so that the circulation of the air flow between the through holes 13 and the blind holes 14 is increased, the air flow flowing through the through holes 13 is prevented from being blocked in the blind holes 14, and the filtering efficiency of the filter screen assembly 100 is increased. The shape of the through-hole 13 and the blind hole 14 is preferably circular here.

According to some embodiments of the present invention, the plurality of filter screens 10 are respectively PP (Polypropylene) non-woven fabric, PE (Polyethylene) non-woven fabric, or PET (Polyethylene terephthalate) non-woven fabric. The PP non-woven fabric refers to a non-woven fabric comprising a PP material, the PE non-woven fabric refers to a non-woven fabric comprising a PE material, and the PET non-woven fabric refers to a non-woven fabric comprising a PET material, wherein the raw materials of the PP material, the PE material or the PET material can be mixed with the raw materials for manufacturing the non-woven fabric to form a corresponding non-woven fabric, or a corresponding coating can be provided on the surface of the non-woven fabric. From this, filter screen 10 is one or more in PP non-woven fabrics, PE non-woven fabrics or the PET non-woven fabrics, can guarantee the air current trafficability characteristic between a plurality of filter screens 10, increases the absorption to harmful particulate matter in the air current, improves the quality of air.

Alternatively, each of the plurality of screens 10 is an electrostatic electret nonwoven fabric. That is, the electrostatic electret device is used to attach electric charges to the non-woven fabric through high-voltage discharge, so that the non-woven fabric used for manufacturing the filter screen 10 has electric charges, and because the material of the non-woven fabric is dense, a large amount of electric charges are formed in the non-woven fabric, so that the non-woven fabric can adsorb charged particles in the environment, or the charged partial particles can be polarized, and then pollutants with small particles can be adsorbed, so that the filter screen 10 has the advantages of high efficiency, low resistance and capability of adsorbing the very small particles. From this, filter screen 10 can reduce the circulation resistance of air current in the inside of filter assembly for static electret non-woven fabrics to make filter assembly 100 can the high efficiency adsorb the impurity in the air current, improve filter assembly 100's filtration efficiency, so that filter screen 10 has higher dust holding capacity, increases filter screen 10's life.

Further, the nonwoven fabric used to form the filter screen 10 may be impregnated with a solution having a dust removing, deodorizing, or antibacterial material to impart deodorizing, antibacterial, or deodorizing capabilities to the nonwoven fabric. Or, a dust-removing, deodorizing or antibacterial coating is provided in the nonwoven fabric. The plurality of through holes 13 and the plurality of blind holes 14 may be formed by punching on the nonwoven fabric.

A filter assembly according to an embodiment of the present invention includes the filter screen assembly 100 of any of the above embodiments.

Referring to fig. 1 to 3, a plurality of through holes 13 and blind holes 14 are alternately arranged on two adjacent filter screens 10 included in the filter screen assembly 100, and the through holes 13 on the first filter screen are opposite to the blind holes 14 on the second filter screen, so that the air flow passing through the through holes 13 of the first filter screen can flow to the blind holes 14 of the second filter screen, and the air flow flows between the first filter screen and the second filter screen through the side walls of the blind holes 14 in the blind holes 14 and flows to the through holes 13 of the second filter screen. The extension 15 of one of the two adjacent filter screens 10 after stacking is stopped against the other filter screen 10 to ensure that the through holes 13 of the two adjacent filter screens 10 are opposite to the blind holes 14.

According to the utility model discloses filter equipment, through the structure that improves filter screen subassembly 100, reduce the resistance of air current at the inside circulation of filter equipment, improve filter equipment's filter capacity to make filter equipment's filter effect better.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. In the description of the present invention, "a plurality" means two or more. In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween. In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (12)

1. A screen assembly, comprising:

a plurality of filter screens, it is a plurality of the filter screen is followed the thickness direction of filter screen arranges, every be formed with a plurality of through-holes and a plurality of blind holes on the filter screen, adjacent two the filter screen is first filter screen and second filter screen respectively, at least one of first filter screen the through-hole with at least one of second filter screen the blind hole is followed the thickness direction of filter screen is relative.

2. The screen assembly of claim 1, wherein the screen includes first and second surfaces on opposite sides of the thickness thereof, the first surface having at least one blind hole therethrough, the at least one blind hole having a cross-sectional area that decreases in a direction from the first surface toward the second surface.

3. The screen assembly of claim 2, wherein an inner surface of at least one of the blind holes is formed as a curved or tapered surface.

4. The filter screen assembly of claim 2, wherein at least one blind hole is formed by a portion of the first surface of the filter screen being recessed in a direction toward the second surface of the filter screen.

5. The screen assembly of claim 1, wherein at least one of the screens has at least one extension on a surface thereof at one side in a thickness direction, the extension being open at both ends thereof, one end of the extension being connected to a sidewall of the through hole, and the other end of the extension extending in a direction away from the screen.

6. The screen assembly of claim 5, wherein the cross-sectional area of the extension gradually decreases from the one end of the extension toward the other end of the extension.

7. The filter screen assembly of claim 5, wherein the depth of the blind holes in the thickness direction of the filter screen is less than the height of the extensions in the thickness direction of the filter screen.

8. The filter screen assembly of claim 5, wherein the other end of the extension opposes the blind hole of an adjacent filter screen in a thickness direction of the filter screen.

9. The filter screen assembly of claim 1, wherein each of the filter screens has a plurality of through hole sets and a plurality of blind hole sets, the plurality of through hole sets and the plurality of blind hole sets are arranged in a staggered manner along a first direction, each of the through hole sets includes a plurality of through holes arranged at intervals along a second direction perpendicular to the first direction, each of the blind hole sets includes a plurality of blind holes arranged at intervals along the second direction, and the plurality of through holes of each of the through hole sets and the plurality of blind holes of each of the blind hole sets are arranged in a staggered manner or in a one-to-one correspondence along the first direction.

10. The filter screen assembly of claim 1, wherein each of the through-holes and each of the blind-holes is respectively circular, oval, oblong, or polygonal in shape.

11. The screen assembly of any of claims 1-10, wherein each of the plurality of screens is a PP nonwoven, a PE nonwoven, or a PET nonwoven; and/or

The filter screens are respectively made of static electret non-woven fabrics.

12. A filtration apparatus comprising a screen assembly according to any one of claims 1 to 11.

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