CN216867664U

CN216867664U - Pulse electromagnetic valve

Info

Publication number: CN216867664U
Application number: CN202220372204.8U
Authority: CN
Inventors: 胡贤郎; 竺鑫迪; 林肃
Original assignee: Xu Wireless Ningbo Intelligent Sanitary Ware Co ltd
Current assignee: Xu Wireless Ningbo Intelligent Sanitary Ware Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-07-01
Anticipated expiration: 2032-02-23

Abstract

The utility model relates to a pulse electromagnetic valve, which comprises a housing and a valve core, wherein the valve core comprises an electromagnet assembly, a sealing element, an upper support, a diaphragm assembly and a lower support, the electromagnet assembly comprises a static iron core, a spring, a movable iron core and a coil support, an inner cavity is formed in the coil support, a first through hole and a second through hole are respectively formed at the inward bottom and the side surface of the electromagnet assembly, the upper support is in splicing fit with the bottom of the coil support, two seals are formed at the matching position, the diaphragm assembly is fixed between the bottom of the upper support and the top of the lower support, an adjusting cavity is formed between the diaphragm assembly and the upper support, the upper support is provided with a first set of flow guide channel and a flow guide hole, a flow guide gap is formed between the side surfaces of the upper support and the lower support and the housing, an annular support with a water inlet and a water outlet pipe are arranged in the lower support, a second flow guide channel for conducting the flow guide gap and the water outlet pipe is arranged in the annular support, and the pressure difference of two sides of the diaphragm assembly is changed, and the conduction or the closing between the water inlet and the water outlet pipe is realized. The whole body is easy to install, small in size and good in universality.

Description

Pulse electromagnetic valve

Technical Field

The utility model relates to an electromagnetic valve, in particular to a pulse electromagnetic valve.

Background

The pulse electromagnetic valve is also called diaphragm valve, the coil in the electromagnetic valve body is input with pulse signal through the wire, the pulse valve is controlled by the output signal of the pulse blowing controller, and the rubber diaphragm is bent and deformed to realize the opening and closing of the pulse valve by the pressure change of the front and the back air chambers of the valve. The existing pulse solenoid valve generally comprises a housing, a valve body and a valve core, wherein the valve core part comprises an electromagnet assembly, a water guide bracket, a diaphragm assembly and the like. Like the grant publication number CN213982220U published in chinese patent literature, the grant publication date 2021, 8 months and 17 days, the utility model is named as "pulse water control solenoid valve", which has a compact and simple structure, but the integrity of the valve core part and the housing is not good enough, and the housing and the valve core part bracket need to be effectively fixed or limited by means of a bolt and other structures, so that the overall assembly efficiency is not high, the volume is larger, and the universality of the valve core is not good. In addition, the through-flow or flow guide channels corresponding to the diaphragm pressure regulating cavity in the existing electromagnetic valve are all designed inside the corresponding structures such as the fixed seat, and the like, so that the lifting size of the structures such as the fixed seat and the like is large, the overall size of the electromagnetic valve is large, and the inconvenience in installation and use is caused. For this reason, an existing solenoid valve assembly structure is to be improved.

Disclosure of Invention

In order to overcome the defects, the utility model aims to provide a pulse electromagnetic valve for the field, so that the technical problems that the valve core of the existing similar electromagnetic valve is large in volume, poor in integrity between the valve core and a housing, low in assembly efficiency and poor in universality of the valve core are solved. The purpose is realized by the following technical scheme.

A pulse electromagnetic valve comprises a housing and a valve core fixed in the housing, wherein the valve core comprises an electromagnet assembly, a sealing element, an upper support, a diaphragm assembly and a lower support; the structure is characterized in that a first through hole for communicating an inner cavity is arranged at the bottom end of the coil support, a sealing head is fixedly connected at one end of the movable iron core, which is far away from the spring, under the action of the spring, the movable iron core is in an initial state, the sealing head is abutted to seal the first through hole, a second through hole for communicating the inner cavity is arranged at the side surface, which is close to the bottom end, of the coil support, the top of the upper support is in insertion fit with the bottom of the coil support, the coil support and the upper support at the insertion fit position are sealed through an upper sealing ring and a lower sealing ring, the second through hole of the coil support is positioned between the two sealing rings, the diaphragm assembly is clamped and sealed and fixed between the bottom of the upper support and the top of the lower support, an adjusting cavity is formed between the diaphragm assembly and the upper support, a return spring abutting against the upper support and the diaphragm assembly is arranged in the adjusting cavity, and the upper support is provided with a flow guide hole for communicating the adjusting cavity and the second through hole of the coil support, the upper support and the lower support are circumferentially sealed with the inner side of the housing through a third sealing ring and a fourth sealing ring respectively, a first flow guide channel communicated with a first flow through hole at the bottom end of the coil support in the upper support is arranged on the side surface of the upper support between the third sealing ring and the fourth sealing ring, a flow guide gap communicated with the first flow guide channel is arranged between the side surfaces of the upper support and the lower support between the third sealing ring and the fourth sealing ring and the housing, an annular support and a water outlet pipe are arranged in the lower support, the water outlet pipe is positioned in the middle of the annular support, the annular support is provided with a water inlet in an annular array, one end of the water inlet and one end of the water outlet pipe face to the lower part of the membrane assembly, the membrane assembly is provided with a guide hole for communicating the water inlet and the adjusting cavity, and the membrane assembly is abutted and sealed with the inner end of the water outlet pipe under the action of the reset spring in an initial state, namely, the water inlet is blocked to be communicated with the inner end of the water outlet pipe, and a second flow guide channel for communicating the flow guide gap with the water outlet pipe is arranged in the annular support. Through the structure, the whole valve core is arranged in the housing, so that the housing and the valve core are high in integrity, the coil support and the upper support, the lower support and the housing are pre-tightened and fixed by adopting the upper sealing ring and the lower sealing ring, the valve core and the housing are pre-tightened and fixed, the valve core and the housing are not easy to loosen, and the assembly structure is simplified. Simultaneously, the clearance between the upper and lower two sealing rings is effectively utilized as a through-flow channel between the coil support and the upper support as well as between the upper support and the lower support and the housing, so that a complicated flow guide hole or flow guide channel is avoided from being designed in the upper support and the lower support, the processing and the manufacturing are convenient, the volumes of the upper support and the lower support are small, the whole volume of the electromagnetic valve is small, and the universality and the adaptability are better.

The coil support is inserted from the upper end of the housing, the upper support, the diaphragm assembly and the lower support are inserted from the lower end of the housing, a limiting part for limiting the coil support and the upper support is arranged in the middle of the housing, the coil support is fixed in the housing through the U-shaped clamping piece, namely, notches which are inserted into two sides of the U-shaped clamping piece in a limiting mode are arranged on the side face of the coil support, outwards-turned buckling parts are arranged at two ends of the U-shaped clamping piece, after two sides of the U-shaped clamping piece are axially inserted into the notches at two sides along the coil support, the inner ends of the notches of the U-shaped clamping piece abut against the top of the coil support, buckling parts at two ends of the U-shaped clamping piece are fastened and fixed with buckling holes in the wall face of the housing, namely, the electromagnet assembly is fixed relative to the housing. Through the structure, the solenoid valve is convenient and quick to assemble integrally.

An elastic gasket is arranged between the inner end of the notch of the U-shaped clamping piece and the top of the coil support, and the elastic gasket forms sealing on the top of the inner cavity of the coil support. Through this structure, further improve the fixed reliability of electro-magnet subassembly and housing, the leakproofness of coil bracket inner chamber.

And the second through holes of the coil support, the first flow guide channels of the upper support, the flow guide holes and the second flow guide channels of the lower support are symmetrically distributed in pairs. Through the structure, the flow guide in the electromagnetic valve is smoother, and the problems of blockage and the like are not easy to occur.

The lower section of the housing is provided with a threaded interface, and when the threaded interface is connected with an external joint, the external joint is tightly propped against the lower support and is limited in the housing, namely the lower support is fixed along with the connection of the threaded interface and the external joint. Through this structure, assembly use is comparatively convenient.

The lower end face of the diaphragm component is provided with a bulge, and the bulge and the pipe orifice at the inner end of the water outlet pipe form a valve head matched in a guiding way. Through the structure, the sealing between the diaphragm assembly and the inner end pipe orifice of the water outlet pipe is more reliable and stable.

The diaphragm subassembly circumference forms ring structure, the lower part of upper bracket and the upper portion of undersetting all are equipped with and form the ring channel of clamping seal complex with the ring structure of diaphragm subassembly. Through the structure, the diaphragm assembly is assembled with the upper support and the lower support more quickly and conveniently.

The reset spring in the adjusting cavity is a spring with a needle, namely, a guide needle is arranged on one side of the spring and penetrates through the guide hole of the diaphragm assembly to guide the diaphragm assembly. Through this structure, promote the stability of diaphragm subassembly action.

The utility model has the advantages of strong integrity of the housing and the valve core, easy assembly and installation, small volume, good adaptability and universality, and is suitable for being used as a pulse electromagnetic valve or the structural improvement of the similar electromagnetic valve.

Drawings

Fig. 1 is a schematic diagram of an explosive structure of the present invention.

Fig. 2 is a schematic view of the internal cross-sectional structure of the present invention, in which a return spring is omitted.

Fig. 3 is a structural diagram of the internal flow guiding state of the present invention, in which the arrows indicate the flow guiding direction.

Fig. 4 is a schematic structural view of an internal flow guiding state of the present invention, in which an arrow indicates a flow guiding direction.

Fig. 5 is a schematic view of the internal diversion state three-structure of the present invention, in which the arrows indicate the diversion direction.

The sequence numbers and names in the figure are: 1. u-shaped fastener, 101, a buckling part, 2, a static iron core, 3, a spring, 4, a movable iron core, 5, a sealing head, 6, a coil support, 601, an inner cavity, 602, a first through hole, 603, a second through hole, 7, a first sealing ring, 8, a second sealing ring, 9, a housing, 901, a buckling hole, 902, a limiting part, 903, a flow guide gap, 10, a third sealing ring, 11, an upper support, 1101, an adjusting cavity, 1102, a first flow guide channel, 1103, a flow guide hole, 12, a reset spring, 13, a membrane assembly, 1301, a guide hole, 1302, a valve head, 14, a fourth sealing ring, 15, a lower support, 1501, a water inlet, 1502, a water outlet pipe, 1503, an annular support, 1504, a second flow guide channel.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings.

As shown in fig. 1-5, the pulse electromagnetic valve includes a housing 9 and a valve core fixed in the housing, the valve core includes an electromagnet assembly, a sealing member, an upper support 11, a diaphragm assembly 13, and a lower support 15, the electromagnet assembly includes a static iron core 2, a spring 3, a movable iron core 4, a coil support 6, a coil, the coil is wound outside the coil support, an inner cavity is formed in the coil support, the top of the inner cavity is sealed and fixed with the static iron core, the inner cavity is provided with the spring and the movable iron core which slides relative to the inner cavity, and the spring is tightly supported between the static iron core and the movable iron core. The coil support is inserted from the upper end of the housing, the upper support, the diaphragm assembly and the lower support are all inserted from the lower end of the housing, a limiting part 902 for limiting the coil support and the upper support is arranged in the middle of the housing, and the coil support is fixed in the housing through the U-shaped clamping piece 1. The method specifically comprises the following steps: the side of the coil support is provided with notches which are inserted and limited with two sides of the U-shaped clamping piece, two ends of the U-shaped clamping piece are provided with outward-turned buckling parts 101, two sides of the U-shaped clamping piece are inserted into the notches on two sides along the axial direction of the coil support, the inner ends of the notches of the U-shaped clamping piece abut against the top end of the coil support, and the buckling parts on two ends of the U-shaped clamping piece and buckling holes 901 on the wall surface of the housing form buckling and fixing, namely the electromagnet assembly is fixed relative to the housing. An elastic gasket can be arranged between the U-shaped clamping piece and the top of the coil support, and the elastic gasket is used for sealing the top of the inner cavity of the coil support.

The bottom of above-mentioned coil support 6 is equipped with the first through-flow hole 602 that switches on inner chamber 601, move the sealed head 5 of one end fixed connection that iron core 4 deviates from spring 3, under the initial condition, move the iron core under the spring action, sealed first through-flow hole that the sealed head offsets, the side that coil support is close to the bottom is equipped with the second through-flow hole 603 that switches on the inner chamber, the cooperation of pegging graft bottom and coil support of upper bracket 11, and pass through between coil support and the upper bracket of grafting cooperation department, lower twice sealing washer, first sealing washer 7 promptly, second sealing washer 8 forms sealedly, coil support's second through-flow hole is located between twice sealing washer, press from both sides tight fixed diaphragm assembly 13 between upper bracket bottom and the lower bracket top, specifically do: the diaphragm subassembly circumference forms annular structure, and the lower part of upper bracket and the upper portion of undersetting all are equipped with and form the ring channel of pressing from both sides tight sealed complex with the annular structure of diaphragm subassembly. An adjusting cavity 1101 is formed between the diaphragm assembly and the upper support, a reset spring 12 which is tightly abutted against the upper support and the diaphragm assembly is arranged in the adjusting cavity, the upper support is provided with a flow guide hole 1103 which is communicated with the adjusting cavity and a second through hole of the coil support, the upper support and the lower support are circumferentially sealed with the inner side of the housing 9 through a third sealing ring 10 and a fourth sealing ring 14 respectively, a first flow guide channel 1102 communicated with the first through hole at the bottom end of the coil support in the upper support is arranged on the side surface of the upper support between the third sealing ring and the fourth sealing ring, a flow guide gap 903 communicated with the first flow guide channel is arranged between the side surfaces of the upper support and the lower support between the third sealing ring and the fourth sealing ring and the housing, an annular support 1503 and a water outlet pipe 1502 are arranged in the lower support, the water outlet pipe is positioned in the middle of the annular support, the annular support is provided with a water inlet 1501 in an annular array, and one end of the water inlet and one end of the water outlet pipe face the lower part of the diaphragm assembly 13, the diaphragm assembly is provided with a guide hole 1301 for communicating the water inlet with the adjusting cavity, and in an initial state, the diaphragm assembly forms abutting seal with the inner end of the water outlet pipe under the action of the reset spring, namely, the communication between the water inlet and the inner end of the water outlet pipe is blocked. A second flow guide channel 1504 for communicating the flow guide gap with the water outlet pipe is arranged in the annular bracket.

In order to make the adjustment of the adjustment cavity 1101 between the diaphragm assembly 13 and the upper support 11 more reliable, the second through-flow holes 603 of the coil support 6, the first flow-guiding channels 1102 of the upper support, the flow-guiding holes 1103, and the second flow-guiding channels 1504 of the lower support 15 are symmetrically distributed in pairs, so that the internal through-flow is more stable and smooth.

The lower section of the housing 9 is a threaded interface, and when the threaded interface is connected with an external joint, the external joint is abutted against the lower support 15 and limited in the housing, namely the lower support is fixed along with the connection of the threaded interface and the external joint.

In order to further improve the sealing reliability between the diaphragm assembly 13 and the inner end nozzle of the water outlet pipe 1502, a valve head 1302 protruding and forming a guiding fit with the inner end nozzle of the water outlet pipe is arranged on the lower end face of the diaphragm assembly.

In order to further improve the stability of the operation of the diaphragm assembly 13, the return spring 12 in the adjustment chamber 1101 is a spring with a needle, i.e. one side of the spring is provided with a guide pin, which passes through the guide hole 1301 of the diaphragm assembly and guides the diaphragm assembly.

The working process of the electromagnetic valve is as follows: in an initial state, under the action of the water pressure in the regulating cavity 1101 of the diaphragm assembly 13 and the action of the return spring 12, the diaphragm assembly and the inner end of the water outlet pipe 1502 form a seal, namely, the conduction between the water inlet 1501 of the lower support 15 and the inner end of the water outlet pipe 1502 is blocked, and at the moment, the electromagnetic valve is in a closed state. When the coil of the electromagnet assembly obtains positive pulse current, the coil drives the movable iron core 4 to compress the spring 3 and adsorb with the static iron core 2, the movable iron core keeps adsorbing with the static iron core because the static iron core is a permanent magnet, the sealing head 5 at the end part of the movable iron core releases the sealing of the first through hole 602 at the bottom end of the coil support 6, at this time, the second through hole 603 on the side surface of the coil support is communicated with the first through hole, namely, the fluid in the adjusting cavity 1101 is guided along the guide hole 1103 of the upper support 11, the second guide hole of the coil support, the first guide channel 1102 of the upper support, the guide gap 903 between the side surfaces of the upper support and the lower support and the housing, and the second guide channel 1504 of the lower support finally guided into the water outlet pipe 1502, the process ensures that the water pressure at the water inlet side of the membrane assembly is larger than the water pressure at the adjusting cavity side, so that the membrane assembly is pushed to upwards compress the reset spring, namely, the sealing of the inner end of the membrane assembly and the water outlet pipe is released, the water inlet of the lower support is communicated with the inner end of the water outlet pipe, so that the electromagnetic valve is opened. When the coil of the electromagnet assembly obtains negative pulse current, the coil drives the movable iron core to remove the adsorption with the static iron core, and under the action of the spring, the movable iron core resets to an initial state, namely, the sealing head of the movable iron core and the first through-flow hole at the bottom of the coil support are sealed again. Under the state, the pressure difference of the diaphragm assembly at the regulating cavity side and the pressure difference of the lower support at the water inlet side are gradually weakened until the pressure difference disappears, and the diaphragm assembly forms abutting seal with the inner end of the water outlet pipe again under the action of the reset spring, namely the electromagnetic valve is closed.

The above description is intended to illustrate the technical means of the present invention, and not to limit the technical scope of the present invention. Obvious modifications or alterations to the present invention in combination with the prior art knowledge will be apparent to those skilled in the art and fall within the scope of the appended claims.

Claims

1. A pulse electromagnetic valve comprises a housing (9) and a valve core fixed in the housing, wherein the valve core comprises an electromagnet assembly, a sealing element, an upper support (11), a diaphragm assembly (13) and a lower support (15), the electromagnet assembly comprises a static iron core (2), a spring (3), a movable iron core (4), a coil support (6) and a coil, the coil support is fixed in the housing, the coil is wound outside the coil support, an inner cavity (601) is formed in the coil support, the top of the inner cavity is sealed and fixed with the static iron core, the inner cavity is provided with the spring and the movable iron core which slides relative to the inner cavity, and the spring is tightly propped between the static iron core and the movable iron core; the coil support is characterized in that a first through-flow hole (602) for communicating an inner cavity (601) is formed in the bottom end of the coil support (6), the movable iron core (4) deviates from one end of a spring (3) and is fixedly connected with a sealing head (5), the movable iron core is under the action of the spring in an initial state, the sealing head is abutted to and sealed with the first through-flow hole, a second through-flow hole (603) for communicating the inner cavity is formed in the side face, close to the bottom end, of the coil support, the top of the upper support (11) is in inserting fit with the bottom of the coil support, the coil support and the upper support at the inserting fit position are sealed through an upper sealing ring and a lower sealing ring, the second through-flow hole of the coil support is located between the two sealing rings, the diaphragm assembly (13) is clamped and fixed between the bottom of the upper support and the top of the lower support (15), and an adjusting cavity (1101) is formed between the diaphragm assembly and the upper support, a reset spring (12) which tightly supports the upper support and the diaphragm assembly is arranged in the adjusting cavity, the upper support is provided with a flow guide hole (1103) which is communicated with the adjusting cavity and the second through hole of the coil support, the upper support and the lower support are circumferentially sealed with the inner side of the housing (9) through a third sealing ring (10) and a fourth sealing ring (14) respectively, the side surface of the upper support between the third sealing ring and the fourth sealing ring is provided with a first flow guide channel (1102) which is communicated with the first through hole at the bottom end of the coil support in the upper support, a flow guide gap (903) which is communicated with the first flow guide channel is arranged between the side surfaces of the upper support and the lower support between the third sealing ring and the fourth sealing ring and the housing, an annular support (1503) and a water outlet pipe (1502) are arranged in the lower support, the water outlet pipe is positioned in the middle of the annular support, the annular support is provided with a water inlet (1501) which is in an annular array, water inlet and outlet pipe one end all move towards the diaphragm assembly below, the diaphragm assembly is equipped with and switches on the water inlet with adjust guide hole (1301) in chamber, under the initial condition, the diaphragm assembly is in it is sealed to form the counterbalance with the inner outlet pipe under the reset spring effect, blocks promptly that the water inlet switches on with the inner of outlet pipe, the inside second water conservancy diversion passageway (1504) that switch on water conservancy diversion clearance and outlet pipe that is equipped with of ring carrier.

2. A pulsed electromagnetic valve according to claim 1, characterised in that the coil support (6) is inserted from the upper end of the housing (9), the upper support (11), the diaphragm assembly (13) and the lower support (15) are all inserted into the lower end of the housing, a limiting part (902) for limiting the coil support and the upper support is arranged in the middle of the housing, the coil support is fixed in the housing through a U-shaped clamping piece (1), namely, the side surface of the coil bracket is provided with notches which are inserted and limited with the two sides of the U-shaped clamping piece, the two ends of the U-shaped clamping piece are provided with outward turning buckling parts (101), after the two sides of the U-shaped clamping piece are inserted into the notches at the two sides along the axial direction of the coil bracket, the inner end of the notch of the U-shaped clamping piece is propped against the top of the coil bracket, and the buckling parts at the two ends of the U-shaped clamping piece are buckled and fixed with the buckling holes (901) on the wall surface of the housing, namely the electromagnet assembly is fixed relative to the housing.

3. A pulsed solenoid valve according to claim 2, characterised in that a resilient gasket is provided between the inner end of the recess of the U-shaped clip (1) and the top of the coil support (6) and forms a seal against the top of the coil support chamber (601).

4. The pulsed solenoid valve according to claim 1, wherein the second through-flow hole (603) of the coil support (6), the first guide passage (1102) of the upper support (11), the guide hole (1103), and the second guide passage (1504) of the lower support (15) are symmetrically distributed in pairs.

5. A pulse electromagnetic valve according to claim 1, characterized in that the lower section of the housing (9) is a screw interface, and when the screw interface is connected with an external connector, the external connector abuts against the lower support (15) and is limited in the housing, that is, the lower support is fixed along with the connection of the screw interface and the external connector.

6. A pulsed solenoid valve according to claim 1, characterised in that the lower end face of the diaphragm assembly (13) is provided with a valve head (1302) which protrudes and forms a guide fit with the orifice at the inner end of the outlet pipe (1502).

7. A pulsed solenoid valve according to claim 1, characterised in that the diaphragm assembly (13) is circumferentially formed in an annular configuration, and the lower part of the upper support (11) and the upper part of the lower support (15) are each provided with an annular groove which forms a clamping sealing engagement with the annular configuration of the diaphragm assembly.

8. A pulsed solenoid valve according to claim 1, characterised in that the return spring (12) in the regulating chamber (1101) is a spring with a needle, i.e. one side of the spring is provided with a guide pin, which passes through and guides the diaphragm assembly via a guide hole (1301) in the diaphragm assembly.