On-off valve

Abstract

A driving unit is arranged on a supporting seat, an installation seat is arranged on the supporting seat and provided with a limiting cavity, a shell is arranged on the installation seat in a sleeved mode through a middle cavity, an air outlet channel communicated with the middle cavity is arranged at the upper end of the shell, and an air outlet seat is arranged in the middle cavity and fixed between the installation seat and the shell. The air outlet seat is provided with a plurality of air outlet through holes communicated with the air outlet channel, the air inlet seat is provided with an air inlet channel penetrating through a body of the air inlet seat, the upper portion of the air inlet seat extends into the limiting cavity, and the air inlet seat is connected with the driving unit. And after being driven to abut against the lower end of the air outlet seat, the air inlet channel and the air outlet through hole are separated, or after being separated from the lower end of the air outlet seat, the air inlet channel and the air outlet through hole are communicated. The driving unit drives the gas inlet seat and the gas outlet seat to be separated or connected in an abutting mode to achieve communication or separation of the gas inlet channel and the gas outlet through hole, connection and disconnection of conveyed gas can be rapidly and conveniently achieved, the whole structure is simple, and all parts are easy to assemble and disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure fluid conveying devices, and particularly relates to a on-off valve that can be used for high-pressure gas conveying. Background Art

[0002] On-off valves are widely used in systems such as liquid, gas, and steam pipelines, and can improve the safety and operating efficiency of pipeline systems. During the conveying process of fluids, whether in the pipeline or at the valve body, good sealing performance is required. Due to the large volume of the on-off valve and the large number of internal parts, there are many parts that need to be sealed between the spring and the valve driving component and between the spring and the valve component inside the on-off valve, and there is a hidden danger of sealing performance leakage in the on-off valve, especially it is prone to leakage in high-pressure gases.

[0003] In the prior art, for example, the on-off valve with the application number 202311719381.4 discloses that after the valve core and the valve stem are integrally arranged on the elastic telescopic tube body, the elastic telescopic tube body is fixed in the second chamber, and the valve stem, the driving component and other key components are separated from the second chamber through the elastic telescopic tube body, reducing the parts that need to be sealed inside the on-off valve and improving the sealing performance of the on-off valve. However, the connection between the first valve port and the second valve port is still controlled by corresponding components such as the elastic telescopic tube, and there may still be a hidden danger of leakage under the action of high-pressure gas in its elastic structure. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an on-off valve, which can realize the connection or separation of the intake passage and the outlet through-hole by driving the intake seat and the outlet seat to separate or abut under the drive of a driving unit, can quickly and conveniently realize the on-off of the conveyed gas, has a good sealing effect, and has a simple overall structure, which is easy to assemble and disassemble each component.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: an on-off valve, comprising:

[0006] A support seat, on which a driving unit is provided,

[0007] An installation seat, which is arranged on the support seat and has a limiting cavity penetrating through its body,

[0008] A housing, which is sleeved on the installation seat through a middle cavity, and an air outlet passage communicated with the middle cavity is provided at the upper end of the housing,

[0009] An air outlet seat, which is arranged in the middle cavity and is fixed between the installation seat and the housing, and a plurality of air outlet through-holes penetrating through its body and communicated with the air outlet passage are provided on the air outlet seat,

[0010] An air inlet seat, which has an air inlet passage passing through its body and its upper part extends into the limiting cavity. The air inlet seat is connected to the driving unit and, after being driven, abuts against the lower end of the air outlet seat to separate the air inlet passage and the air outlet through hole, or is separated from the lower end of the air outlet seat to communicate the air inlet passage and the air outlet through hole.

[0011] As a further optimization, the mounting seat includes a mounting plate and a sleeve. The mounting plate is arranged on the support seat, and the sleeve is arranged on the mounting plate, and a limiting cavity communicating with each other is formed between the two.

[0012] As a further optimization, a groove is provided in the middle of the bottom end surface of the air outlet seat, and the air outlet through hole is located in the groove; the peripheral side of the bottom end surface of the air outlet seat abuts against the upper end of the mounting seat.

[0013] As a further optimization, a lower convex platform that can abut against the upper end surface of the air inlet seat and at least partially extends into the air inlet passage is provided in the middle of the bottom end surface of the air outlet seat. The lower convex platform is located in the groove, and the air outlet through hole is located beside the lower convex platform, which can improve the sealing effect on the air inlet passage.

[0014] As a further optimization, the air inlet seat includes a connecting block and an inner cylinder. The connecting block is connected to the driving unit and is provided with a first air inlet cavity. The inner cylinder is arranged on the connecting block and is provided with a second air inlet cavity. The second air inlet cavity communicates with the first air inlet cavity to form an air inlet passage, and the inner cylinder extends into the limiting cavity from bottom to top.

[0015] As a further optimization, the driving unit includes a cylinder and a push block arranged at the output end of the cylinder. The push block is connected to the connecting block.

[0016] As a further optimization, the push block is driven by the cylinder to translate, and a top push inclined surface is provided on its upper end surface. The lower end surface of the connecting block has an abutting inclined surface, and the abutting inclined surface abuts against the top push inclined surface. The horizontal movement of the push block is converted into the vertical movement of the connecting block through the abutting contact between the inclined surfaces.

[0017] As a further optimization, a guiding groove is provided on the support seat, and the push block is embedded in the guiding groove, which can limit the positions of the push block and the connecting block and ensure the movement accuracy of the two.

[0018] As a further optimization, a plurality of guiding holes are provided on the upper end surface of the connecting block, and guiding columns are arranged in the guiding holes. The upper ends of the guiding columns abut against the mounting seat through elastic members. The guiding columns can further ensure the accuracy of the vertical movement of the air inlet seat, and the elastic force of the elastic members can ensure that the air inlet seat always abuts against the push block.

[0019] As a further optimization, sealing rings are provided between the mounting base and the outer shell, and between the mounting base and the air intake base, which can improve the sealing effect of the entire on-off valve.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. By driving the separation or abutment of the air intake base and the air outlet base by the driving unit, the communication or separation of the air intake passage and the air outlet through hole is realized. This structure is not greatly affected by high-pressure gas, and can quickly and conveniently realize the on-off of the conveyed gas, and is easy to control;

[0022] 2. The overall structure is simple and compact, the assembly and disassembly of each component are convenient, and the replacement and maintenance of the components are easy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the utility model.

[0024] Figure 2 It is a cross-sectional view of the utility model after removing the support base and the driving unit.

[0025] Figure 3 It is a structural diagram of the mounting base of the utility model.

[0026] Figure 4 It is a structural diagram of the air outlet base of the utility model.

[0027] Figure 5 It is a structural diagram of the bottom view of the air outlet base of the utility model.

[0028] Figure 6 It is a structural diagram of the air intake base of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following are specific embodiments of the utility model and in combination with the drawings, the technical solutions of the utility model are further described, but the utility model is not limited to these embodiments.

[0030] Such as Figures 1 to 6As shown in the figure, a on-off valve includes a support base 1, a mounting base 3, a housing 4, an air outlet base 5 and an air inlet base 6. A driving unit 2 is provided on the support base 1. The mounting base 3 is arranged on the support base 1 and has a limiting cavity 301 penetrating through its body. The housing 4 is sleeved on the outer side wall of the mounting base 3 through a middle cavity 401 it has. An air outlet channel 402 communicating with the middle cavity 401 is provided at the upper end of the housing 4. The air outlet base 5 is arranged in the middle cavity 401 and is fixed between the mounting base 3 and the housing 4, that is, the lower end of the air outlet base 5 abuts against the upper end of the mounting base 3, and its upper end is abutted by the housing 4, and there is a diffusion cavity 403 communicating with the air outlet channel 402 between the two (the diffusion cavity 403 is located in the upper part of the middle cavity 401, and this part does not accommodate the air inlet base 5). A plurality of air outlet through holes 501 penetrating through its body and communicating with the air outlet channel 402 are provided on the air outlet base 5. The air inlet base 6 has an air inlet channel 601 penetrating through its body. The upper part of the air inlet base 6 extends into the limiting cavity 301. The air inlet base 6 is connected to the driving unit 2 and, after being driven, abuts against the lower end of the air outlet base 5 to separate the air inlet channel 601 and the air outlet through holes 501, or is separated from the lower end of the air outlet base 5 to communicate the air inlet channel 601 and the air outlet through holes 501.

[0031] In the present utility model, gas (high-pressure gas) enters through the air inlet channel 601. When the driving unit 2 drives the air inlet base 6 to move upward, the upper end of the air inlet base 6 abuts against the lower end of the air outlet base 5. At this time, the air outlet through holes 501 are located outside the air inlet base 6, that is, after the air inlet base 6 abuts against the air outlet base 5, the air inlet channel 601 and the air outlet through holes 501 are separated. Therefore, the gas is sealed in the air inlet channel 601 and cannot be continuously transported. When the driving unit 2 drives the air inlet base 6 to move downward, the air inlet base 6 no longer abuts against the lower end of the air outlet base 5. Therefore, the gas can diffuse outward through the upper part of the air inlet channel 601 and enter the air outlet through holes 501, and enter the air outlet channel 402 through the diffusion cavity 403 for transportation.

[0032] Preferably, there can be four air outlet through holes 501, which are symmetrically arranged on the air outlet base 5 near the side edges. Then, the air inlet channel 601 can be closed by the air inlet base 6 abutting against the middle position of the lower end of the air outlet base 5 (the middle of the area surrounded by the four air outlet through holes 501) to achieve separation from the air outlet through holes 501.

[0033] In the present utility model, the driving unit 2 drives the separation or abutment of the air inlet base 6 and the air outlet base 5 to achieve the communication or separation of the air inlet channel 601 and the air outlet through holes 501, avoiding the use of elastic parts for driving or connection to reduce the risk of possible leakage caused by the direct or indirect impact of high-pressure gas on the elastic parts. Only the separation or abutment of the two forms the opening or closing of the high-pressure gas transportation channel, which is not greatly affected by high-pressure gas, can quickly and conveniently realize the on-off of the transported gas, has a good sealing effect, a simple structure, and is easy to control.

[0034] As Figure 3 shown in the figure, the mounting base 3 includes a mounting plate 31 and a sleeve 32. The mounting plate 31 is arranged on the support base 1, and the sleeve 32 is arranged on the mounting plate 31. A limiting cavity 301 communicating with each other is formed between them. The arrangement of the sleeve 32 facilitates the installation and cooperation with the outer shell 4 on the one hand. On the other hand, the lower end of the air outlet seat 5 abuts against the upper end of the sleeve 32, forming a sealed space therebetween. When the upper part of the air inlet seat 6 moves downward in the sleeve 32, the gas transported through the air inlet channel 601 fills the sealed space and enters the air outlet through hole 501. In addition, an installation groove 311 can be arranged at the part of the mounting plate 31 that abuts against the outer shell 4, and a sealing ring is arranged in the installation groove 311 to ensure the sealing performance between the mounting base 3 and the outer shell 4.

[0035] As Figures 4 to 5 shown in the figure, a groove 51 is provided in the middle of the bottom end surface of the air outlet seat 5, and the air outlet through hole 501 is located in the groove 51. The bottom end of the air outlet seat 5 abuts against the upper end of the sleeve 32 beside the groove 51. By providing the groove 51, it is convenient to form the above-mentioned sealed space between the air outlet seat 5 and the sleeve 32 for the gas to diffuse after passing through the air inlet channel 601, and it is also convenient for the gas to enter the air outlet through hole 501.

[0036] Preferably, a lower convex platform 52 that can abut against the upper end surface of the air inlet seat 6 and at least partially extends into the air inlet channel 601 is provided in the middle of the bottom end surface of the air outlet seat 5. The lower convex platform 52 is located in the groove 51, and the air outlet through hole 501 is located beside the lower convex platform 52. Then, when the air inlet channel 601 abuts against the lower convex platform 52, the air inlet channel 601 can be better closed.

[0037] Furthermore, as Figure 6 shown in the figure, the air inlet seat 6 includes a connecting block 61 and an inner cylinder 62. The connecting block 61 is connected to the driving unit 2 and is provided with a first air inlet cavity 6011. The inner cylinder 62 is arranged on the connecting block 61 and is provided with a second air inlet cavity 6012. The first air inlet cavity 6011 is communicated with an external high-pressure air source, and the second air inlet cavity 6012 communicates with the first air inlet cavity 6011 to form an air inlet channel 601. The inner cylinder 62 extends into the limiting cavity 301 from bottom to top, and the connecting block 61 is located outside to realize the connection with the driving unit 2.

[0038] Combined with Figure 1 shown in the figure, the driving unit 2 includes a cylinder 21 and a push block 22 arranged at the output end of the cylinder 21. The push block 22 is connected to the connecting block 61. By driving the push block 22 to move through the cylinder 21, the connecting block 61 is driven to drive the inner cylinder 62 to move up and down in the limiting cavity 301, so that the upper end of the inner cylinder 62 abuts against or disengages from the lower end of the air inlet seat 5.

[0039] Further, the pushing block 22 is driven by the cylinder 21 to translate, and its upper end surface is provided with a pushing inclined surface. The lower end surface of the connecting block 61 has an abutting inclined surface, and the abutting inclined surface abuts against the pushing inclined surface. The cylinder 21 is horizontally arranged, which can convert the horizontal movement of the pushing block 22 into the vertical movement of the connecting block 61, reducing the vertical height of the on-off valve and enabling it to be applied to scenarios with certain requirements for vertical space. Additionally, it should be noted that through the cooperation mode of the abutting inclined surface and the pushing inclined surface of the present utility model, on the one hand, the mutual contact surface between the two can be increased, and a relatively small horizontal pushing force of the cylinder 21 can bear a relatively large reaction force (the downward thrust of high-pressure gas) of the connecting block 61. On the other hand, the relatively large acting force of the connecting block 61 will not directly act on the cylinder 21, providing a certain protective effect on the cylinder 21.

[0040] To ensure the precise contact between the pushing inclined surface and the abutting inclined surface, a guiding groove 11 is provided on the support seat 1, and both the pushing block 22 and the connecting block 61 are embedded in the guiding groove 11. Based on this setting, a side opening 12 that can communicate with the first air inlet cavity 6011 needs to be provided on the support seat 1.

[0041] In addition, to ensure the accuracy of the vertical movement of the connecting block 61, a plurality of guiding holes 600 are provided on the upper end surface of the connecting block 61. Similarly, matching guiding holes can be provided at the lower end of the mounting seat 3. A guiding post 63 is arranged in the guiding hole 600 to further ensure the movement accuracy. The upper end of the guiding post 63 abuts against the mounting seat 3 through an elastic member 631. For example, a spring is arranged at the upper end of the guiding post 63, and the elastic restoring action of the spring can push the connecting block 61 downward so that the abutting inclined surface of the connecting block 61 always abuts against the pushing inclined surface of the pushing block 22.

[0042] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art of the present utility model can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. An on-off valve, characterized in that: include: A support base is provided with a driving unit, The mounting seat is arranged on the supporting seat and has a limiting cavity penetrating the body thereof, The outer shell is sleeved on the mounting seat through the middle cavity, and the upper end of the outer shell is provided with an air outlet passage communicating with the middle cavity. The air outlet seat is arranged in the middle cavity and fixed between the mounting seat and the shell. The air outlet seat is provided with a plurality of air outlet holes penetrating the body thereof and connected with the air outlet channel. An air inlet seat has an air inlet passage running through its body, and its upper part extends into the limiting cavity. The air inlet seat is connected to a driving unit, and after being driven to abut against the lower end of the air outlet seat, separates the air inlet passage and the air outlet hole, or connects the air inlet passage and the air outlet hole after being separated from the lower end of the air outlet seat.

2. The on-off valve according to claim 1, characterized in that: The mounting seat comprises a mounting plate and a sleeve, wherein the mounting plate is arranged on the supporting seat, and the sleeve is arranged on the mounting plate, and a limiting cavity communicating with each other is formed between the two.

3. The on-off valve according to claim 1, characterized in that: A groove is provided in the middle of the bottom end surface of the gas outlet seat, and the gas outlet through hole is located in the groove; the peripheral side of the bottom end surface of the gas outlet seat abuts against the upper end of the mounting seat.

4. The on-off valve according to claim 3, characterized in that: A lower boss is provided in the middle of the bottom end surface of the air outlet seat, which can abut against the upper end surface of the air inlet seat and at least partially extends into the air inlet channel. The lower boss is located in the groove, and the air outlet hole is located beside the lower boss.

5. The on-off valve according to claim 1, characterized in that: The air inlet seat includes a connecting block and an inner cylinder. The connecting block is connected to the driving unit and is provided with a first air inlet cavity. The inner cylinder is arranged on the connecting block and is provided with a second air inlet cavity. The second air inlet cavity is connected to the first air inlet cavity to form an air inlet channel. The inner cylinder extends into the limiting cavity from bottom to top.

6. The on-off valve according to claim 5, characterized in that: The driving unit comprises a cylinder and a push block arranged at the output end of the cylinder, and the push block is connected to a connecting block.

7. The on-off valve according to claim 6, characterized in that: The push block is driven by the cylinder to translate, and the upper end surface of the push block is provided with a push inclined surface, and the lower end surface of the connection block is provided with a contact inclined surface, and the contact inclined surface is in contact with the push inclined surface.

8. The on-off valve according to claim 7, characterized in that: The support seat is provided with a guide groove, and the push block is embedded in the guide groove.

9. The on-off valve according to any one of claims 5 to 8, characterized in that: The upper end surface of the connecting block is provided with a plurality of guide holes, and guide columns are arranged in the guide holes. The upper ends of the guide columns are abutted against the mounting seat through elastic members.

10. The on-off valve according to claim 1, characterized in that: Sealing rings are provided between the mounting seat and the shell, and between the mounting seat and the air inlet seat.

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