CN217108429U

CN217108429U - Miniature self-locking electromagnetic valve

Info

Publication number: CN217108429U
Application number: CN202220737937.7U
Authority: CN
Inventors: 姚可大; 石倩文; 宣霞女; 翁杨凯
Original assignee: Zhejiang Dupang Pneumatic Technology Co ltd
Current assignee: Zhejiang Dupang Pneumatic Technology Co ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-08-02
Anticipated expiration: 2032-03-30

Abstract

The invention discloses a micro self-locking electromagnetic valve, relating to the field of pneumatic transmission, and the technical scheme is characterized in that the micro self-locking electromagnetic valve comprises a valve body, a movable sealing component and a valve cover, wherein an air inlet and an air outlet are arranged in the valve body, a separation layer is arranged between the air inlet and the air outlet, a vent hole is arranged in the separation layer, a main cavity for the movable sealing component to move is arranged in the valve cover, the movable sealing component comprises a movable valve core and a valve rod, a fixed valve core and a driving coil are also arranged in the main cavity, the movable valve core and the fixed valve core are made of a magnetic material, the driving coil can drive the movable valve core to rotate, the valve rod is in threaded connection with one end of the movable valve core, the technical effect is that the valve core is driven to rotate by the driving coil, the valve core rotates and is in threaded engagement with the valve rod to realize rotary reciprocating motion, thereby sealing or opening the vent hole and abandoning the traditional spring reset mode, the problem that the overall sealing performance is affected due to the fact that the elastic capacity of the spring is reduced can be prevented.

Description

Miniature self-locking electromagnetic valve

Technical Field

The invention relates to the technical field of pneumatic transmission, in particular to a miniature self-locking electromagnetic valve.

Background

The electromagnetic valve is a sealed two-way valve which controls the mechanical movement of a valve core through the on-off of the current of an electromagnet coil, the valve core moves through an electromagnet when the current is switched on, the valve body returns through a return spring when the current is switched off, and the electromagnetic valve determines the circulation of gas in the valve body through the movement of the valve core. Although this type of solenoid valve is simple to use, it is: the solenoid valve is electrified for a long time, and the elasticity of the spring is reduced due to the long-time electrification, so that the integral sealing performance is influenced.

Disclosure of Invention

The invention aims to provide a miniature self-locking electromagnetic valve which has the advantage that the gas in a valve body can be sealed or circulated without long-time electrification.

The technical purpose of the invention is realized by the following technical scheme:

the utility model provides a miniature auto-lock solenoid valve, includes valve body, valve gap, removal seal assembly, and the valve gap is connected with the valve body, is equipped with the main cavity room in the valve gap, removes seal assembly and movably sets up in the main cavity room, wherein is equipped with air inlet, gas outlet and air vent in the valve body, and the inlet end is connected to the air inlet, and gas outlet intercommunication output is terminal, wherein air vent intercommunication air inlet and gas outlet and with the main cavity room intercommunication, remove seal assembly and air vent swing joint, its characterized in that: be equipped with the rotatory drive arrangement of drive movable seal subassembly in the main cavity room, movable seal subassembly includes valve rod and removal case, removes the inner wall threaded connection of case and air vent, and it is reciprocal towards air vent one end to remove the case.

Through adopting above-mentioned technical scheme, drive arrangement drives and removes the case rotation, through removing case and air vent inner wall threaded connection, removes case towards air vent reciprocating motion to give up and adopt original spring reset mode, avoided the long-time extrusion of spring and lead to the elastic force decline of spring, and then lead to solenoid valve overall sealing nature to receive the influence.

Further setting: the driving device comprises a power supply and a driving coil, and the driving coil is connected with a power supply circuit.

Through adopting above-mentioned technical scheme, produce the electromagnetic field after the drive coil circular telegram, the electromagnetism drives and removes the case rotation, adopts the drive coil more to save inner space, and simple structure, easy and simple to handle.

Further setting: wherein the drive coil is a stator winding coil.

By adopting the technical scheme, the stator winding coil is a common rotating coil and is more suitable for the required functions of the driving coil.

Further setting: the main cavity in be equipped with fixed case, fixed case and valve gap fixed connection, fixed case is equipped with the combination hole, combination hole and removal case threaded connection.

Through adopting above-mentioned technical scheme, through setting up fixed case, set up on fixed case and combine the hole, when combining hole and removal case threaded connection, even under the circuit connection disconnection's of drive coil and power the condition, the screw thread has auto-lock nature, combines the hole still to be connected with the removal case, compares original spring reset mode, in case the drive coil stops the power supply, removes the case and loses the electromagnetic force, can be forced by the spring and reset, more the power saving energy.

Further setting: the movable valve core comprises a rotating main shaft, a sealing head and a sealing foot, wherein the sealing head and the sealing foot are fixedly connected with the rotating main shaft, the sealing head is in threaded connection with the combining hole, and the sealing foot is in threaded connection with the vent hole.

Through adopting above-mentioned technical scheme, sealed head and sealed enough be convenient for remove the case and correspond the air vent and combine the location of moving connection between the hole, alleviate simultaneously and remove the whole quality of case and be convenient for drive arrangement more and drive its rotation.

Further setting: the valve body is internally provided with a first exhaust hole communicated with the air outlet and the combination hole, the fixed valve core is internally provided with a second exhaust hole communicated with the combination hole, and the valve cover is provided with a third exhaust hole communicated with the outside and the second exhaust hole.

Through adopting above-mentioned technical scheme, set up exhaust holes at different levels, can pass through the exhaust hole with the surplus gas of gas outlet and work end equipment and discharge, realized self-bleeding's effect, prevented that the surplus gas in the work end equipment from causing the damage to work end equipment.

Further setting: the main cavity room is equipped with the support frame, and the support frame contains inner tower and outrigger, intermediate layer, and the inner tower contains the fixed bed with fixed case fixed connection and supplies to remove the slide rail that the case slided, and the inner tower is connected in the outrigger support, and wherein the intermediate layer is located between outrigger and the inner tower, drive coil and intermediate layer installation fixed connection.

Through adopting above-mentioned technical scheme, set up the support frame, can optimize whole inner structure, can effectively prevent fixed case rotation when sealed head and combination hole thread engagement to influence thread engagement efficiency, set up the slide rail and can provide the guide effect for removing the case, the intermediate layer installation drive coil is convenient for the better drive of drive coil and is removed the case rotation.

Further setting: the solenoid valve is equipped with the mounting hole, and the valve rod is equipped with the detachable mounting, mounting and mounting hole fixed connection.

Through adopting above-mentioned technical scheme, optimize valve rod structure, can avoid the valve rod to be driven rotatoryly by the ware with the rotatory in-process of removal case simultaneously to the influence connection efficiency that slides.

In conclusion, the invention has the following beneficial effects:

the movable valve core is driven to rotate through the driving coil, the valve rod is meshed with the movable valve core, the moving position is changed, and the spring return in the traditional mode is avoided, so that the effect that the elastic potential energy is reduced due to the fact that the spring is compressed for a long time, and the overall sealing effect is influenced is avoided.

The exhaust system can exhaust redundant gas in the tail end working device, so that the using effect of the tail end working device is protected.

Through using screw drive and thread sealing, according to the auto-lock nature of its screw thread, also can be in the state before stopping the power supply always after the drive coil stops the power supply, still can not influence its sealed effect, according to its special shape this solenoid valve both be applicable to normally open valve operational environment, also be applicable to normally closed valve's operational environment, has accomplished the dual-purpose effect of a valve.

Drawings

FIG. 1 is a schematic cross-sectional view of the overall structure of a solenoid valve;

FIG. 2 is a schematic cross-sectional view of a support frame structure;

FIG. 3 is a schematic cross-sectional view of a fixed spool configuration;

FIG. 4 is a schematic cross-sectional view of the valve body construction;

FIG. 5 is a schematic cross-sectional view of a valve stem configuration;

FIG. 6 is a schematic cross-sectional view of a moving spool configuration;

in the figure, 1, a valve body; 11. mounting holes; 111. a small hole; 112. macropores; 12. an air inlet; 13. a vent hole; 14. an air outlet; 15. a first exhaust port; 2. a valve cover; 21. a main chamber; 22. a third vent hole; 3. moving the seal assembly; 31. a valve stem; 311. a fixing member; 312. a connecting rod; 313. a clamping table; 32. moving the valve core; 321. a sealing head; 322. rotating the main shaft; 323. sealing feet; 324. a threaded connection hole; 4. a drive device; 41. a drive coil; 5. a support frame; 51. an inner frame; 511. a fixed layer; 512. a slide rail; 52. an interlayer; 53. an outer frame; 6. fixing the valve core; 61. a second vent hole; 62. a clamping part; 63. a main body; 64. and a combining hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

First preferred embodiment:

a miniature self-locking electromagnetic valve is shown in figure 1 and comprises a valve body 1, a movable sealing assembly 3 and a valve cover 2, wherein the valve body 1 is connected with the valve cover 2. Wherein a main chamber 21 is arranged in the valve cover 2, and the movable sealing component 3 is movably arranged in the main chamber 21. In the main chamber 21 there is provided a stationary valve core 6 of a magnetic material and a set of drive coils 41. A moving spool 32 made of a magnetic material is also provided in the moving seal assembly 3. The driving coil 41 is electrified to generate an electromagnetic field, the electromagnetic field generates an electromagnetic force, the electromagnetic force drives the movable sealing component 3 to rotate in the main cavity 21, a valve rod 31 coaxial with the axis of the movable valve core 32 is arranged in the movable sealing component 3, and the movable valve core 32 is in threaded connection with the valve rod 31. The valve body 1 is provided with an air inlet 12 and an air outlet 14, the air inlet 12 is positioned between the valve cover 2 and the air outlet 14, a partition layer is arranged between the air inlet 12 and the air outlet 14, a vent hole 13 coaxial with the axis of the movable valve core 32 is arranged in the partition layer, and air between the air inlet 12 and the air outlet 14 can flow through the vent hole 13. The solenoid valve drives the movable valve core 32 to rotate through the driving coil 41, the movable valve core 32 rotates to be meshed with threads in the valve rod 31 so as to change the working position, and the purpose of controlling gas is achieved by plugging or opening the vent hole 13.

In one embodiment of the invention, as shown in fig. 1 and 2, while including the above, a support frame 5 is provided in the main chamber 21, wherein the support frame 5 is used for mounting the driving coil 41 and the fixed valve core 6 and providing the movable valve core 32 to slide in the inner wall thereof. The supporting frame 5 comprises an inner frame 51, an outer frame 53 and an interlayer 52 between the inner frame 51 and the outer frame 53, wherein two concentric holes are arranged inside the inner frame 51, the large-diameter hole is a fixing layer 511, and the small-diameter hole is a sliding rail 512. The fixed layer 511 is used for mounting the fixed valve element 6, and the movable valve element 32 moves in the slide rail 512. Wherein the interlayer 52 is used for mounting the driving coil 41, and the outer frame 53 is used for supporting the inner frame 51.

As shown in fig. 1, 2 and 3, the fixed valve core 6 has a main body 63, the main body 63 is a cylinder, wherein one end of the main body 63 has a convex clamping portion 62, the clamping portion 62 is used for fitting with the fixed layer 511, one end of the clamping portion 62 is attached to the fixed layer, the other end is attached to the inner wall of the valve cap 2, a combining hole 64 connected to the movable valve core 32 is disposed at the axis of the other end of the main body 63, and a second exhaust hole 61 penetrating through the main body 63 is disposed at the axis of the combining hole 64.

As shown in fig. 1 to 4, a first vent hole 15 is formed at the joint of the valve body 1 and the valve cover 2, and the first vent hole 15 can communicate the main chamber 21 with the air outlet 14. The valve cover 2 is provided with a third exhaust hole 22 communicated with the second exhaust hole 61. The redundant gas of output can loop through three exhaust holes and discharge. Wherein the stationary valve element 6 is provided with a sealing ring around the third venting hole 22 preventing gas leakage when the venting system is closed.

As shown in fig. 1, 4 and 5, the valve body 1 is provided with a mounting hole 11 for mounting the fixed stem 312 assembly 31. The mounting hole 11 is located at one end of the valve body 1, which is far away from the first exhaust port, the mounting hole 11 comprises a large hole 112 and a small hole 111, the axis of the large hole 112 is coaxial with the axis of the small hole 111, the axis of the small hole 111 is coaxial with the axis of the vent hole 13, and the small hole 111 is communicated with the air inlet 12. Wherein the fixed valve rod 31 comprises a fixing piece 311, a connecting rod 312 and a clamping table 313. One end of the connecting rod 312 is integrally connected with the clamping table 313, the other end of the connecting rod 312 is connected with the movable valve core 32 through the small hole 111, the fixing piece 311 is tightly connected with the large hole 112, the clamping table 313 is positioned between the fixing piece 311 and the inner wall of the large hole 112, and the clamping table 313 is clamped and fixed with two ends of the inner wall of the large hole 112 through the fixing piece 311. Thereby preventing the transmission efficiency of the moving spool 32 from being affected by the rotation or displacement of the valve stem.

As shown in fig. 1 to 6, the movable valve body 32 is provided with a rotary main shaft 322, and a seal head 321 and a seal foot 323 are provided at both ends of the rotary main shaft 322. The sealing head 321 and the sealing foot 323 are cylindrical and correspond to the size of the vent hole 13 and the size of the combining hole 64, respectively. Wherein the sealing head 321 and the sealing foot 323 are coaxial with the axis of the rotating main shaft 322, and the sealing head 321 and the sealing foot 323 are integrally connected with the rotating main shaft 322. The sealing vent hole 13 is a sealing foot 323, and the sealing head 321 is used for sealing the second vent hole 61. The sealing mode is sealing thread sealing, wherein the side wall of the sealing head 321 is provided with an external thread, the side wall of the sealing foot 323 is provided with a sealing external thread with the opposite rotation direction of the sealing head 321, the hole wall of the combining hole 64 is provided with a sealing internal thread matched with the sealing head 321, and the hole wall of the vent hole 13 is provided with a sealing internal thread matched with the sealing foot 323. Wherein, the axis of the sealing foot 323 is provided with a threaded connection hole 324 for being in threaded connection with one end of the rod body 3121 with threads. Wherein the threaded connection is preferably a driving threaded connection.

As shown in fig. 1, the driving coil 41 is preferably a stator winding coil, and the stator winding coil can control the moving spool 32 to be in three states:

in the first state, the driving coil 41 drives the movable valve element 32 to rotate clockwise, the threaded connection hole 324 is engaged with the thread of the valve rod 312, the movable valve element 32 moves towards one end of the vent hole 13, and is engaged with the sealing thread in the vent hole 13 through the sealing foot 323, so that the vent hole 13 is blocked, the second exhaust hole 61 is opened, and the redundant gas in the gas outlet 14 can be discharged out of the valve body 1.

In the second state, the driving coil 41 drives the movable valve element 32 to rotate counterclockwise, the threaded connection hole 324 is engaged with the thread of the valve rod 312, the movable valve element 32 moves towards one end of the second exhaust hole 61, and is engaged with the sealing thread in the connection hole 64 through the sealing head 321, so as to block the second exhaust hole 61, open the vent hole 13, enable the air inlet 12 and the air outlet 14 to be communicated, and enter the working state.

In the third state, the driving coil 41 drives the movable valve element 32 to move to the designated position and then stops, the driving coil 41 stops generating the electromagnetic field, so that the movable valve element 32 stops moving, and the movable valve element 32 stops at the position due to the self-locking property of the sealing head 321 or the sealing foot 323 and the thread on the valve rod 312, so that the problems that the electromagnetic valve is heated or the coil is burnt out, the coil is in poor contact, the magnetic force disappears, the elastic force of the spring is reduced, the overall sealing performance is affected and the like caused by long-time electrification are solved.

The above-mentioned embodiments are merely illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but only protected by the patent laws within the scope of the claims.

Claims

1. The utility model provides a miniature auto-lock solenoid valve, including valve body (1), valve gap (2), remove seal assembly (3), valve gap (2) are connected with valve body (1), be equipped with main cavity room (21) in valve gap (2), it movably sets up in main cavity room (21) to remove seal assembly (3), wherein be equipped with air inlet (12) in valve body (1), gas outlet (14) and air vent (13), the inlet end is connected in air inlet (12), gas outlet (14) intercommunication output is terminal, wherein air vent (13) intercommunication air inlet (12) and gas outlet (14) and with main cavity room (21) intercommunication, its characterized in that: the cavity (21) is internally provided with a driving device (4) for driving the movable sealing component (3) to rotate, the movable sealing component (3) comprises a valve rod (31) and a movable valve core (32), the movable valve core (32) is in threaded connection with the inner wall of the vent hole (13), and the movable valve core (32) reciprocates towards one end of the vent hole (13).

2. The miniature self-locking electromagnetic valve according to claim 1, characterized in that: the driving device (4) comprises a power supply and a driving coil (41), and the driving coil (41) is connected with a power supply circuit.

3. The miniature self-locking electromagnetic valve according to claim 2, wherein: the driving coil (41) is a stator winding coil.

4. The miniature self-locking electromagnetic valve according to claim 1, characterized in that: the movable valve core is characterized in that a fixed valve core (6) is arranged in the main cavity (21), the fixed valve core (6) is fixedly connected with the valve cover (2), a combination hole (64) is formed in the fixed valve core (6), and the combination hole (64) is in threaded connection with the movable valve core (32).

5. The micro self-locking electromagnetic valve according to claim 4, characterized in that the movable valve core (32) comprises a rotating main shaft (322), a sealing head (321) and a sealing foot (323), the sealing head (321) and the sealing foot (323) are fixedly connected with the rotating main shaft (322), the sealing head (321) is in threaded connection with the combining hole (64), and the sealing foot (323) is in threaded connection with the vent hole (13).

6. The miniature self-locking electromagnetic valve according to claim 1, characterized in that: the valve body (1) is internally provided with a first exhaust hole (15) communicated with the air outlet (14) and the combination hole (64), the fixed valve core (6) comprises a second exhaust hole (61) communicated with the combination hole (64), and the valve cover (2) is provided with a third exhaust hole (22) communicated with the outside and the second exhaust hole (61).

7. The miniature self-locking electromagnetic valve according to claim 6, wherein: main cavity room (21) is equipped with support frame (5), support frame (5) contain interior frame (51) and outrigger (53), intermediate layer (52), wherein interior frame (51) contain with fixed valve core (6) fixed connection's fixed bed (511) and supply slide rail (512) that removal valve core (32) slided, outrigger (53) support connection interior frame (51), wherein intermediate layer (52) are located between outrigger (53) and interior frame (51), drive coil (41) and intermediate layer (52) fixed connection.

8. The miniature self-locking electromagnetic valve according to claim 1, characterized in that: the valve rod (31) is provided with a detachable fixing piece (311), and the fixing piece (311) is fixedly connected with the mounting hole (11).