CN218543295U

CN218543295U - Valve device with non-return function

Info

Publication number: CN218543295U
Application number: CN202222420814.3U
Authority: CN
Inventors: 严继辉
Original assignee: Xiamen Keji Precision Equipment Co ltd
Current assignee: Xiamen Keji Precision Equipment Co ltd
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2023-02-28
Anticipated expiration: 2032-09-13

Abstract

The application relates to a valve device with a check function, which comprises a valve body, a switch assembly and a valve plate, wherein the valve body is sequentially provided with a first channel, a transfer cavity and a second channel along the fluid direction, and the switch assembly is used for switching on and off the first channel and/or the second channel; the valve block is elastic, is located in the transfer cavity and blocks the outlet of the first channel, is provided with a support member in the valve body, and abuts against the local position of the surface of the valve block, which is far away from the first channel. The valve device has the on-off and non-return functions, and the structure is more simplified.

Description

Valve device with non-return function

Technical Field

The present application relates to the field of valve devices, and more particularly, to a valve device having a check function.

Background

The valve device is a basic element for controlling fluid, belongs to an actuator, is not limited to hydraulic pressure and pneumatic pressure, and can be controlled by electromagnetism, manual operation and the like. The most common are on-off valves, check valves, safety valves, directional control valves, speed control valves, etc.

When controlling some fluid pipelines, often can be through the ooff valve in order to realize the break-make, and according to special operating mode, when needing to carry out the non return to the fluid in this pipeline, still can add the check valve in one side of ooff valve, nevertheless can cause the structure occupation space increase like this, then be difficult to be suitable for under comparatively little installation environment.

SUMMERY OF THE UTILITY MODEL

In order to reduce the space occupation, the application provides a valve device with a check function.

The application provides a valve gear with non return function adopts following technical scheme:

a valve device with a check function comprises a valve body, a switch assembly and a valve plate, wherein the valve body is sequentially provided with a first channel, a transfer cavity and a second channel along the direction of fluid, and the switch assembly is used for switching on and off the first channel and/or the second channel; the valve block is elastic, is located in the transfer cavity and blocks the outlet of the first channel, is provided with a support piece in the valve body, and is used for abutting against the local position of the surface of the valve block, which is far away from the first channel.

By adopting the technical scheme, the on-off of the valve device can be realized by arranging the switch assembly; through setting up the elasticity valve block, when the second passageway produces suction, the fluid will loop through first passageway to exert pressure to the valve block and force the free position of valve block to warp along the export direction of keeping away from first passageway (the free position is other positions except that support piece butt on the valve block), namely the export of first passageway is opened, and the fluid gets into the transfer chamber, and outside the discharge valve device of second passageway, when the second passageway produces pressure, this fluid pressure will be exerted on the valve block, in order to force the export of valve block shutoff first passageway more, in order to prevent the continuation flow of fluid, thereby realize the non return.

Through giving consideration to the non-return and on-off functions, the structure is simplified, and the space occupation is small.

Optionally, an inner wall of the transfer cavity, which is communicated with the first channel, is set as a butting wall, a distance between a surface of the butting wall and an axis of an outlet of the first channel is gradually reduced from the second channel to the first channel, and a surface of the butting wall is used for abutting against an outer edge of the valve plate.

Through adopting above-mentioned technical scheme, through the shape that sets up the butt wall and the butt form of valve block and butt wall, make the formation edge between valve block and the butt wall narrow, the wide toper inner chamber in centre, consequently when fluid gets into the toper inner chamber from first passageway, its fluid pressure can better act on the valve block, so that the deformation of the edge of valve block, when the second passageway produces suction promptly, the fluid in the first passageway is opened the required power of valve block and can be littleer, thereby improve valve gear's trigger sensitivity.

Optionally, the support member abuts against a middle position of the surface of the valve plate far away from the first channel.

By adopting the technical scheme, the edge of the valve plate is used as a deformable free part, and the free part is easy to deform, so that the triggering sensitivity of the valve device is improved.

Optionally, the support member includes a plurality of support blocks, each support block is located on one side of the valve plate far away from the first channel, and the support block abuts against a middle position of a surface of the valve plate far away from the first channel; and a passing gap for the fluid of the transfer cavity to enter the second channel is formed between the adjacent supporting blocks.

By adopting the technical scheme, when the second channel generates suction, fluid sequentially passes through the first channel, the transfer cavity and the gap to enter the second channel, and the functions of abutting and passing through of the supporting piece are realized.

Optionally, the distance between the surface of the support piece facing the valve plate and the axis of the outlet of the first channel gradually decreases from the second channel to the first channel.

Through adopting above-mentioned technical scheme for the space between support piece and the butt wall is great, and this space is used for supplying the edge deformation of valve block to and supply in the fluid in the transfer chamber gets into first passageway through this space, improve the deformation degree of valve block promptly, and improve fluidic flow of passing through.

Optionally, an inner wall of the transfer cavity, which is communicated with the second channel, is provided as an installation wall, the support member includes a plurality of support blocks, each support block is connected with a surface of the installation wall, the support blocks abut against a local position of a surface of the valve plate, which is far away from the first channel, and a passing gap for fluid in the transfer cavity to enter the second channel is formed between adjacent support blocks; the distance between the surface of the mounting wall and the axis of the inlet of the second passage gradually increases from the second passage to the first passage.

By adopting the technical scheme, the installation wall is arranged, and the surface of the installation wall is used as a component part passing through the gap, so that the fluid in the transfer cavity can be guided to gradually collect to the inlet of the second channel, the pressure damage of the fluid is reduced, and the smoothness of the fluid flow is improved.

Optionally, the valve plate is of a planar wafer structure.

Through adopting above-mentioned technical scheme, it is changeed deformation, and dodge after the deformation the space great to reduced the required power of valve block is opened to the fluid in the first passageway, still improved the deformation degree of valve block and improved fluidic through-flow.

Optionally, the valve body comprises a valve head and a valve seat which are connected, and the transfer chamber is located at a joint between the valve head and the valve seat.

The valve block is after long-time the use, and it is tired probably to deform to lead to the non return performance to descend, and through adopting above-mentioned technical scheme, so that the installation of valve block, when the valve body can be dismantled, also utilize the replacement of valve block simultaneously.

Optionally, a buffer cavity is arranged in the valve body, the buffer cavity is communicated with the first channel, and the cross-sectional area of the buffer cavity is larger than that of the first channel.

By adopting the technical scheme, the buffer cavity can store part of the fluid in advance, and when the second channel generates suction, the fluid in the buffer cavity can be supplemented into the transfer cavity in time, so that the trigger sensitivity is improved.

Optionally, the switch assembly includes an electromagnet, an iron sheet, and an elastic gasket, which are mounted on the valve body, wherein the iron sheet is mounted on the elastic gasket, and a gap is formed between the iron sheet and the electromagnet, which is a component of the first channel or the second channel.

By adopting the technical scheme, when the circuit is broken, the electromagnet is electrified to force the iron sheet to adsorb so as to block the gap and form the circuit break, and the elastic gasket deforms during the circuit break; when the iron sheet is in a passage, the electromagnet is powered off, no adsorption force exists, the elastic gasket is deformed again, so that the iron sheet is separated from the electromagnet, the gap is restored, and the passage is formed.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the valve plate and the switch assembly are used for giving consideration to the functions of non-return and on-off, the structure is simple, and the occupied space is small;

2. through the cooperation form that sets up the valve block respectively with support piece and butt wall, not only reduced the required power of valve block is opened to the fluid in the first passageway, still improved the deformation degree of valve block and improved fluidic flow of passing through.

Drawings

Fig. 1 is an exploded view of the entire structure of the present embodiment.

Fig. 2 is a sectional view of the entire structure of the present embodiment.

Fig. 3 is a schematic view of the elastic pad of the present embodiment.

Fig. 4 is a schematic view of the valve seat of the present embodiment.

Description of reference numerals: 1. a valve head; 2. a valve seat; 3. a switch assembly; 4. a valve plate; 10. a first channel; 100. an air inlet; 200. an air outlet; 11. a mounting wall; 12. a supporting block; 13. passing through the gap; 20. a second channel; 21. a PIN needle; 22. a mounting cavity; 23. clamping the ring body; 24. a notch; 25. a butting wall; 30. a transfer chamber; 31. an electromagnet; 311. mounting grooves; 312. a through hole; 32. a coil; 33. iron sheets; 34. an elastic pad; 341. a deformation section; 342. an installation part; 343. a connecting portion; 40. and a buffer cavity.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses valve device with non return function.

Referring to fig. 1 and 2, the valve device with the non-return function includes a valve body and a switch assembly 3, the valve body is sequentially provided with a first channel 10, a transfer chamber 30 and a second channel 20 along a fluid direction, and the switch assembly 3 is used for switching on and off the first channel 10 and/or the second channel 20, so that a plurality of switch assemblies 3 can be arranged according to the number of switching positions, in this embodiment, one switch assembly 3 is used for switching on and off the first channel 10.

As shown in fig. 2, the valve body includes a valve head 1 and a valve seat 2, a first channel 10 is disposed on the valve seat 2, an inlet of the first channel 10 is an air inlet 100, a second channel 20 is disposed on the valve head 1, and an outlet of the second channel 20 is an air outlet 200; the junction between the valve head 1 and the valve seat 2 is surrounded to form the transfer chamber 30, and the external fluid can pass through the air inlet 100, the first channel 10, the transfer chamber 30, the second channel 20 in sequence and is finally discharged from the air outlet 200.

And, the valve seat 2 is still equipped with PIN needle 21, and it is connected with switch module 3, supplies power for switch module 3.

The switch assembly 3 comprises an electromagnet 31, a coil 32, an iron sheet 33 and an elastic gasket 34, wherein an installation cavity 22 is arranged at one end of the valve seat 2, which is far away from the valve head 1, the electromagnet 31 is installed in the installation cavity 22, and a through hole 312 is further arranged on the electromagnet 31, in the embodiment of the present application, the through hole 312 is specifically arranged at the center of the electromagnet 31, and the through hole 312 is a component of the first channel 10; the electromagnet 31 is provided with an annular mounting groove 311, and the annular mounting groove 311 is used for mounting the coil 32.

As shown in fig. 3, the elastic pad 34 is made of rubber and includes an installation portion 342, a connection portion 343, and a deformation portion 341, wherein the installation portion 342 is an annular band, the deformation portion 341 is a circular block, and the connection portion 343 is connected between the installation portion 342 and the deformation portion 341. The connecting portions 343 are specifically three, are circumferentially and uniformly disposed on the deformation portion 341, and form three mounting holes between the mounting portion 342 and the deformation portion 341.

One surface of the deformation portion 341 is provided with a snap groove, and the iron sheet 33 is installed in the snap groove.

As shown in fig. 4, a clamping ring body 23 is convexly disposed at one end of the valve seat 2, which is far away from the valve head 1, a notch 24 is disposed on the clamping ring body 23, which corresponds to the connecting portion 343 one by one, and the mounting portion 342 is mountable on an outer wall of the clamping ring body 23, so that the connection between the elastic gasket 34 and the valve seat 2 is realized, and in a normal state (i.e., the electromagnet is not energized and is in an open circuit state), a gap is formed between the elastic gasket 34 and the electromagnet 31, which is a component of the first channel 10, and a gap is formed between an outer side of the deformation portion 341 and an inner side of the clamping ring body 23.

Therefore, in a normal state, the external fluid may sequentially pass through the gap between the outer side of the deformation portion 341 and the inner side of the snap ring body 23, the gap between the elastic gasket 34 and the electromagnet 31, the through hole 312, and the first channel 10 to enter the relay chamber 30, and when the electromagnet 31 is energized, the iron sheet 33 is forced to be adsorbed to block the gap between the elastic gasket 34 and the electromagnet 31, thereby forming an open circuit, during which the elastic gasket 34 is elastically deformed.

In addition, a buffer cavity 40 is formed in the inner wall of the installation cavity 22, the buffer cavity 40 is communicated with the first channel 10, and the cross-sectional area of the buffer cavity 40 is larger than that of the first channel 10, so that the fluid is buffered.

As shown in fig. 2, the valve device further includes a resilient valve plate 4, preferably made of rubber, and the valve plate 4 is located in the transfer chamber 30.

The inner wall of the relay cavity 30, which is communicated with the first channel 10, is set to be a butting wall 25, that is, the butting wall 25 is located at one end of the valve seat 2, which is close to the valve head 1, the distance between the surface of the butting wall 25 and the axis of the outlet of the first channel 10 is gradually reduced from the second channel 20 to the first channel 10, that is, the butting wall 25 may be in a concave cone shape, the surface of the butting wall 25 is used for butting against the outer edge of the valve sheet 4, in a normal state (fluid does not flow into the valve body), the valve sheet 4 may be in a free-moving state or a state that the outer edge of the valve sheet 4 butts against the surface of the butting wall 25, and in a normal state, the valve sheet 4 is required to be located near one side of the outlet of the first channel 10; when fluid flows from the second channel 20 to the first channel 10, i.e. when the fluid flows in a reverse direction, the pressure of the fluid is applied to the surface of the valve plate 4 facing away from the abutting wall 25, so as to force the valve plate 4 to abut against the abutting wall 25 more tightly, thereby blocking the outlet of the first channel 10 to prevent the fluid from flowing in a reverse direction, i.e. having a check function.

In order to improve the plugging effect, in this embodiment, the valve plate 4 is set to be a planar disk structure.

As shown in fig. 2, the inner wall of the transit chamber 30 communicating with the second passage 20 is defined as a mounting wall 11, that is, the mounting wall 11 is located at one end of the valve head 1 close to the valve seat 2, and the distance between the surface of the mounting wall 11 and the axis of the inlet of the second passage 20 gradually increases from the second passage 20 to the first passage 10, that is, the mounting wall 11 may be concave-conical.

Be equipped with support piece in the transfer chamber 30, support piece is located one side of keeping away from first passageway 10 of valve block 4, support piece butt is in the local position on the surface of keeping away from first passageway 10 of valve block 4, in this embodiment, support piece includes polylith supporting shoe 12, supporting shoe 12 is the wedge, the wedge sets up with the laminating of installation wall 11, the relative wall of adjacent wedge, be formed with the fluid entering second passageway 20 that supplies transfer chamber 30 between the surface of installation wall 11 and pass through clearance 13, and the equal butt of each supporting shoe 12 is in the middle part position on the surface of keeping away from first passageway 10 of valve block 4.

The implementation principle of the embodiment of the application is as follows: by providing the switch assembly 3, the on-off function of the valve device can be realized.

When suction is generated at the air outlet 200 and the valve device is in a passage state, external fluid sequentially passes through a gap between the outer side of the deformation portion 341 and the inner side of the snap ring body 23, a gap between the elastic gasket 34 and the electromagnet 31, the through hole 312, the buffer chamber 40 and the first channel 10 (see fig. 2), at this time, the pressure of the fluid forces the free part of the valve plate 4 to deform in the direction away from the outlet of the first channel 10 (the free part is the outer circumferential edge of the valve plate 4 in this embodiment), at this time, the outlet of the first channel 10 is opened, the fluid enters the transfer chamber 30, then the fluid passes through the passing gap 13 formed between the opposite walls of the adjacent supporting blocks 12 and the surface of the mounting wall 11 and enters the second channel 20, and thus the unidirectional flow is completed.

Through valve block 4 and switch module 3 promptly to compromise non return and break-make function, the structure is retrencied, and the space occupies for a short time.

In addition, the valve plate 4 is matched with the support piece and the abutting wall 25 respectively, so that the force required by the fluid in the first channel 10 for opening the valve plate 4 is reduced, the deformation degree of the valve plate 4 is improved, and the passing flow of the fluid is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A valve device with a check function, characterized in that: the transfer valve comprises a valve body, a switch assembly (3) and a valve plate (4), wherein the valve body is sequentially provided with a first channel (10), a transfer cavity (30) and a second channel (20) along the fluid direction, and the switch assembly (3) is used for switching on and off the first channel (10) and/or the second channel (20); the valve plate (4) has elasticity, the valve plate (4) is located in the transfer cavity (30) and the valve plate (4) blocks the outlet of the first channel (10), a support piece is arranged in the valve body, and the support piece is used for abutting against the valve plate (4) and is far away from the local position of the surface of the first channel (10).

2. The valve device with check function according to claim 1, wherein: the inner wall of the transfer cavity (30) communicated with the first channel (10) is set to be a butting wall (25), the distance between the surface of the butting wall (25) and the axis of the outlet of the first channel (10) is gradually reduced from the second channel (20) to the first channel (10), and the surface of the butting wall (25) is used for enabling the outer edge of the valve plate (4) to be butted.

3. The valve device with a check function according to claim 1 or 2, characterized in that: the support part is abutted to the middle position of the surface, far away from the first channel (10), of the valve plate (4).

4. The valve device with a check function according to claim 3, characterized in that: the support piece comprises a plurality of support blocks (12), each support block (12) is located on one side, far away from the first channel (10), of the valve plate (4), and the support blocks (12) abut against the middle position of the surface, far away from the first channel (10), of the valve plate (4); a passing gap (13) for the fluid of the transfer cavity (30) to enter the second channel (20) is formed between the adjacent supporting blocks (12).

5. The valve device with check function according to claim 3, wherein: the distance between the surface of the support piece facing the valve plate (4) and the axis of the outlet of the first channel (10) is gradually reduced from the second channel (20) to the first channel (10).

6. The valve device with a check function according to claim 1, characterized in that: the inner wall of the transfer cavity (30) communicated with the second channel (20) is set as a mounting wall (11), the support piece comprises a plurality of support blocks (12), each support block (12) is connected with the surface of the mounting wall (11), the support blocks (12) are abutted to the local position of the surface, far away from the first channel (10), of the valve plate (4), and a passing gap (13) for the fluid of the transfer cavity (30) to enter the second channel (20) is formed between the adjacent support blocks (12); the distance between the surface of the mounting wall (11) and the axis of the inlet of the second channel (20) increases gradually from the second channel (20) to the first channel (10).

7. The valve device with a check function according to claim 1 or 2, characterized in that: the valve plate (4) is of a plane wafer structure.

8. The valve device with a check function according to claim 1, characterized in that: the valve body comprises a valve head (1) and a valve seat (2) which are connected, and the transfer cavity (30) is positioned at the joint between the valve head (1) and the valve seat (2).

9. The valve device with a check function according to claim 1, characterized in that: a buffer cavity (40) is arranged in the valve body, the buffer cavity (40) is communicated with the first channel (10), and the cross sectional area of the buffer cavity (40) is larger than that of the first channel (10).

10. The valve device with check function according to claim 1, wherein: the switch assembly (3) comprises an electromagnet (31), an iron sheet (33) and an elastic gasket (34), wherein the electromagnet (31), the iron sheet (33) and the elastic gasket (34) are mounted on the valve body, and a gap of a component of the first channel (10) or the second channel (20) is formed between the iron sheet (33) and the electromagnet (31).