CN214743670U

CN214743670U - Dustproof electromagnetic valve

Info

Publication number: CN214743670U
Application number: CN202120322099.2U
Authority: CN
Inventors: 南章赞; 南洋
Original assignee: Zhejiang Sannan Pneumatic Co ltd
Current assignee: Zhejiang Sannan Pneumatic Co ltd
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2021-11-16
Anticipated expiration: 2031-02-03

Abstract

The utility model discloses a dustproof electromagnetic valve, wherein, including main part, iron core subassembly and piston, the iron core subassembly includes movable iron core and coil, and the coil is connected with movable iron core and controls movable iron core work, is equipped with cavity and passageway in the main part, and the piston is located the main part internal fixation, and one end and the cavity intercommunication of passageway, the other end and the axial of piston communicate downwards; the utility model discloses prevent dust, improve life.

Description

Dustproof electromagnetic valve

Technical Field

The utility model relates to a dustproof solenoid valve.

Background

In the prior art, the solenoid valve usually drives the piston to move through the action of the coil, so that the valve core linked with the piston moves, and the reversing function is realized. The piston vertically reciprocates in the axial direction and performs air suction and exhaust actions, so that the electromagnetic valve is provided with a breathing hole communicated with the outside, and the air suction and exhaust actions are formed through the breathing hole. But because the outside environment of breathing hole direct UNICOM, just outside environment is comparatively abominable, inhales foreign matter such as dust through the breathing hole very easily, adheres to on the piston wall, pollutes the piston to influence the piston life-span.

Disclosure of Invention

The utility model discloses the main technical problem who solves provides a dustproof solenoid valve.

The utility model discloses the technical scheme who solves its technical problem and adopt is: the utility model provides a dustproof solenoid valve, wherein, includes main part, iron core subassembly and piston, the iron core subassembly is including moving iron core and coil, and the coil with move the iron core and be connected and control and move the iron core work, is equipped with cavity and passageway in the main part, and the piston is located the main part internal fixation, the one end and the cavity intercommunication of passageway, the other end and the axial below intercommunication of piston.

Adopt this kind of structure to set up, in the use, because the setting of passageway, the effect of inner loop has been formed, when the piston exhausts, then through the passageway, discharge the gas of piston below into to the cavity in, when the piston breathes in, then through the passageway, inhale the below to the piston with the gas in the cavity in, for current structure, direct contact between this kind of structure direct stop and the external environment, make play dirt-proof effect, improve the holistic life of solenoid valve, guarantee the holistic normal work of solenoid valve.

Wherein, the main body is provided with a pressure relief port which is communicated with the cavity.

The arrangement of the pressure relief port prevents that the actual using effect is influenced by overhigh air pressure inside the electromagnetic valve in the using process, and redundant air can be discharged through the pressure relief port, so that the protection effect is realized. It should be noted here that the pressure relief opening is opened only when the internal air pressure exceeds a predetermined value, so as to achieve the pressure relief effect, and in a normal state, the pressure relief opening is in a closed state.

The piston further comprises a first sealing element, and the first sealing element is located between the piston and the main body.

The arrangement of the first sealing element enables air tightness between the piston and the main body to be better.

Wherein, the cross-section of the first sealing element is Y-shaped.

Through the setting of Y style of calligraphy, further improve holistic sealed effect.

Wherein, the cover is equipped with first piece that resets on the movable iron core.

Through the setting of the first piece that resets for moving the iron core in the motion process, playing the effect that resets.

Wherein, be equipped with the constant head tank on the movable core, first piece that resets is the toper setting, and first piece cover that resets is established in the constant head tank.

Through the setting of constant head tank for the installation of the first piece that resets is more convenient, and through the setting of constant head tank, further improves the first fixed effect that resets.

Wherein, still include the second sealing member, the second sealing member is located between core subassembly and the main part.

Through the setting of second sealing member for the sealed effect between iron core subassembly and the main part.

Wherein, be equipped with the spacing groove on the iron core subassembly, the second sealing member is located the spacing inslot.

Through the setting of spacing groove for it is more convenient that the second sealing member is fixed, improves sealed effect moreover.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Detailed Description

Example 1:

referring to fig. 1, a dust-proof solenoid valve includes a body 1, a core assembly 2, and a piston 3.

The iron core assembly 2 comprises a movable iron core 4 and a coil, the coil and the iron core are connected and matched, and the movable iron core 4 is driven to control to work through coil work. It should be noted here that the movable iron core 4 moves vertically in the axial direction, and the movable iron core 4 reciprocates in the axial direction, specifically, the movable iron core 4 moves toward the main body 1. Further, be equipped with constant head tank 41 on the movable iron core 4, first piece 42 that resets is established on movable iron core 4, and the one end of first piece 42 that resets offsets with constant head tank 41, and the other end offsets with iron core subassembly 2 to make movable iron core 4 in the motion process, play the effect that resets. And through the setting of constant head tank 41 for the installation of first piece 42 that resets is more convenient, and through the setting of constant head tank 41, further improves the fixed effect of first piece 42 that resets. It should be noted here that the first restoring member 42 is an inverted cone, i.e. a conical spring with a smaller bottom and a larger top, so as to improve the overall restoring effect.

In the iron core subassembly 2 part stretched into main part 1, set up spacing groove 21 on iron core subassembly 2 and the 1 junction of main part, the cover was equipped with second sealing member 22 on the spacing groove 21, and the second sealing member 22 outside offsets with main part 1 to realized sealed effect, through the setting of spacing groove 21, make second sealing member 22 fixed more convenient, improve sealed effect moreover. The second seal 22 is here preferably a sealing ring.

The piston 3 is fixed in the main body 1 and matched with the valve core, so that the reversing effect of the whole electromagnetic valve is realized. A first seal 5 is located between the piston 3 and the body 1. With the arrangement of the first sealing member 5, the airtightness between the piston 3 and the main body 1 is made better. Further, here the cross-section of the first seal 5 is Y-shaped. Through the setting of Y style of calligraphy, further improve holistic sealed effect.

The main body 1 is provided with an air inlet and an air outlet, and the switching effect between the air inlet and different air outlets is realized through the movement of the valve core matched with the piston 3.

Be equipped with cavity 11 in the main part 1, passageway 12 and pressure release mouth 13, here cavity 11 is located between movable iron core 4 and the piston 3, the one end and the cavity 11 intercommunication of passageway 12, the other end communicates with the axial below of piston 3, it needs to explain here, the ascending one section of the axial vertical of passageway 12 sets up for keeping away from piston 3, guarantee in the use, passageway 12 can not direct influence the result of use of solenoid valve, and the length of extension passageway 12, make also have certain space in the passageway 12, improve the effect of internal circulation.

One end of the pressure relief port 13 is communicated with the cavity 11, and the other end is communicated with the external environment. Adopt the setting of pressure release mouth 13, prevent in the use, the inside atmospheric pressure of solenoid valve is too high, influences actual result of use, through pressure release mouth 13, can be with unnecessary gas outgoing to the protection effect has been realized. It should be noted here that the pressure relief opening 13 is opened only when the internal air pressure exceeds a predetermined value, so as to achieve the pressure relief effect, and in the normal state, the pressure relief opening 13 is in the closed state.

Adopt this kind of structure to set up, in the use, because the setting of passageway 12, the effect of inner loop has been formed, when piston 3 exhausts, then through passageway 12, discharge the gas of piston 3 below to cavity 11 in, when piston 3 breathes in, then through passageway 12, inhale the below to piston 3 with the gas in the cavity 11 in, for current structure, direct contact between this kind of structure direct stop and the external environment, make and play dirt-proof effect, improve the holistic life of solenoid valve, guarantee the holistic normal work of solenoid valve.

Claims

1. The utility model provides a dustproof solenoid valve which characterized in that: including main part, iron core subassembly and piston, the iron core subassembly is including moving iron core and coil, and the coil with move the iron core and be connected and control and move the iron core work, is equipped with cavity and passageway in the main part, and the piston is located the main part internal fixation, the one end and the cavity intercommunication of passageway, the other end and the axial below intercommunication of piston.

2. A dust-proof electromagnetic valve according to claim 1, characterized in that: the main body is provided with a pressure relief port which is communicated with the cavity.

3. A dust-proof electromagnetic valve according to claim 1, characterized in that: also included is a first seal between the piston and the body.

4. A dust-proof electromagnetic valve according to claim 3, characterized in that: the cross section of the first sealing element is Y-shaped.

5. A dust-proof electromagnetic valve according to claim 1, characterized in that: the movable iron core is sleeved with a first reset piece.

6. A dust-proof electromagnetic valve according to claim 5, characterized in that: the movable iron core is provided with a positioning groove, the first reset piece is arranged in a conical shape, and the first reset piece is sleeved in the positioning groove.

7. A dust-proof electromagnetic valve according to claim 1, characterized in that: still include the second seal, the second seal is located between core subassembly and the main part.

8. A dust-proof electromagnetic valve according to claim 7, characterized in that: be equipped with the spacing groove on the iron core subassembly, the second sealing member is located the spacing inslot.