Soft sealing three-way stop valve

Abstract

The utility model relates to a soft sealing three-way stop valve, and relates to the technical field of valves. An inlet and an outlet are formed in the valve body, a moving cavity is formed in the valve body, the inlet and the outlet are both communicated with the moving cavity, a reversing opening is formed in the side wall of the valve body, the reversing opening is communicated with the moving cavity through a circulation hole, the circulation hole and the outlet are oppositely arranged, the valve clack is arranged in the moving cavity, and a driving assembly is arranged in the valve body. The driving assembly is connected with the valve clack and used for driving the valve clack to move between the communicating hole and the outlet, a sealing gasket is arranged on the side wall of the valve clack, and the sealing gasket can abut against the inner wall of the moving cavity and used for blocking the communicating hole or the outlet. The valve has the effect that the valve is not prone to being damaged due to collision.

Description

Technical Field

[0001] This application relates to the field of valves, and more particularly to a soft-seal three-way shut-off valve. Background Technology

[0002] A three-way gate valve is an important fluid control device, belonging to the category of forced-seal valves. When the valve is closed, pressure is applied to the valve disc to ensure no leakage at the sealing surface. This type of valve plays a control role in fluid transport systems, performing functions such as shut-off, regulation, flow diversion, backflow prevention, pressure stabilization, flow splitting, and overflow.

[0003] The main feature of a three-way gate valve is that it has one inlet, one outlet, and one reversing port, making it particularly suitable for changing the flow direction of media. During operation, the valve stem drives the valve disc to move inside the valve. When the valve disc is at the reversing port, the inlet cannot connect to the reversing port, allowing the media to enter only from the inlet and exit only from the outlet. When the valve disc moves to the outlet, it blocks the outlet, allowing the inlet to connect only to the reversing port, enabling the media to flow from the inlet into the reversing port.

[0004] When the valve disc moves inside the valve, it is very easy to collide with the inner wall of the valve, which will cause wear to the valve. Therefore, this needs to be improved. Utility Model Content

[0005] In order to improve the problem that the valve disc is prone to collision with the valve and causing damage when it moves in the valve, this application provides a soft-seal three-way shut-off valve.

[0006] The soft-seal three-way stop valve provided in this application adopts the following technical solution:

[0007] A soft-seal three-way shut-off valve includes a valve body and a valve disc. The valve body has an inlet and an outlet. The valve body has a movable cavity, and both the inlet and the outlet are connected to the movable cavity. The valve body has a reversing port on its side wall, which is connected to the movable cavity through a flow hole. The flow hole is opposite to the outlet. The valve disc is located in the movable cavity. The valve body has a driving assembly connected to the valve disc for driving the valve disc to move between the flow hole and the outlet. The valve disc has a sealing gasket on its side wall, which can abut against the inner wall of the movable cavity to block the flow hole or the outlet.

[0008] By adopting the above technical solution, in the initial state, the drive component drives the valve disc to the flow hole, thereby blocking the flow hole and making the moving chamber only connected to the inlet and outlet. When the medium enters from the inlet and reaches the moving chamber, the medium can only flow out from the outlet. When the drive component is used to drive the valve disc to move in the moving chamber until the valve disc moves to the outlet and blocks the outlet, the moving chamber is only connected to the inlet and the reversing port, so that the medium flows in from the inlet, passes through the moving chamber, and then flows out from the reversing port, achieving the purpose of reversing.

[0009] When the valve disc blocks one end of the outlet or flow hole, the side wall of the valve disc is in contact with the inner wall of the moving cavity. This means the sealing gasket is pressed tightly against the inner wall of the moving cavity, providing a seal. The sealing gasket can deform to fill the gap between the valve disc and the inner wall of the moving cavity, making the seal tighter and improving the sealing performance. Simultaneously, the sealing gasket also acts as a buffer, preventing the valve disc from directly impacting the inner wall of the moving cavity and thus preventing damage to the valve body.

[0010] Optionally, the drive assembly includes a cylinder and a valve stem, the cylinder is disposed in the valve body, the output end of the cylinder is connected to the valve stem, and the end of the valve stem away from the cylinder is fixed to the valve disc.

[0011] By adopting the above technical solution, the cylinder is activated to drive the valve stem to move, which in turn drives the valve disc to reciprocate between the flow hole and the outlet in the moving chamber, thereby realizing the reversal of the medium in the three-way shut-off valve.

[0012] Optionally, the valve stem is provided with a support plate, the output end of the cylinder is fixed to the support plate, the support plate abuts against the side wall of the valve body, and can slide on the side wall of the valve body.

[0013] By adopting the above technical solution, when the cylinder drives the valve stem to move, it drives the support plate to move within the valve body. The side wall of the support plate abuts against the inner wall of the valve body and slides on the inner wall of the valve body. The support plate plays a supporting and guiding role, making it less likely for the valve stem to deviate during movement, increasing the stability of the valve stem movement, thereby ensuring that the valve disc can accurately seal one end of the outlet or flow port opening.

[0014] Optionally, the valve body is provided with a support spring, one end of which is fixed to the valve body and the other end is fixed to a support plate. The support spring is used to drive the valve disc to block the flow hole.

[0015] By adopting the above technical solution, the elastic force of the support spring supports the support plate, causing the valve stem to drive the valve disc to abut against the inner wall of the moving cavity, blocking the connecting hole, so that in the initial state, the inlet of the three-way shut-off valve is only connected to the outlet.

[0016] Optionally, the sealing gasket has a receiving groove on its side wall, and an oil-impregnated sponge is embedded in the receiving groove, the oil-impregnated sponge being able to contact the inner wall of the moving cavity.

[0017] By adopting the above technical solution, when the sealing gasket abuts against the inner wall of the moving cavity, the oil-impregnated sponge contacts the inner wall of the moving cavity and permeates the lubricating oil onto the inner wall of the moving cavity. When the valve disc shakes and moves horizontally, the lubricating oil plays a lubricating role, making it less likely for wear to occur between the sealing gasket and the inner wall of the moving cavity, thus extending the service life of the sealing gasket and the valve body.

[0018] Optionally, the sealing gasket has a cavity, and a push spring is provided in the cavity. The end of the push spring is fixed to the inner wall of the cavity, and the push spring is used to press the sealing gasket against the inner wall of the movable cavity.

[0019] By adopting the above technical solution, when the valve disc moves and abuts against the inner wall of the moving cavity, the push spring is deformed by external force, thereby storing energy to slow down the movement speed of the valve disc, thereby improving the buffering capacity of the sealing gasket, reducing the impact force, and further reducing the damage of the valve disc to the valve body.

[0020] Optionally, the valve disc has a hook band on its side wall and the sealing gasket has a velvet band, which is attached to the hook band.

[0021] By adopting the above technical solution, the fleece of the sealing gasket is pressed against the hook, thereby achieving a fixed connection between the fleece and the hook, and thus completing the installation of the sealing gasket on the valve disc.

[0022] Optionally, the valve disc is provided with a positioning plate, which is used to limit the sliding of the sealing gasket on the hook strap.

[0023] By adopting the above technical solution, the positioning plate restricts the periphery of the sealing gasket, preventing the sealing gasket from moving in a direction parallel to the hook tape. This prevents the velvet tape from shifting out of the hook tape from the edge, making it less likely for the sealing gasket to separate from the valve disc and increasing the stability of the sealing gasket installed on the valve disc.

[0024] In summary, this application includes at least one of the following beneficial effects:

[0025] 1. When the valve disc blocks one end of the outlet or flow hole, the side wall of the valve disc is in contact with the inner wall of the moving cavity. That is, the sealing gasket is pressed tightly against the inner wall of the moving cavity, providing a seal. The sealing gasket can deform to fill the gap between the valve disc and the inner wall of the moving cavity, making the seal tighter and improving the sealing performance. At the same time, the sealing gasket also acts as a buffer, preventing the valve disc from directly impacting the inner wall of the moving cavity and thus preventing damage to the valve body.

[0026] 2. When the valve disc moves and abuts against the inner wall of the moving cavity, the push spring is compressed by external force and deforms, thereby storing energy to slow down the movement speed of the valve disc, thereby improving the buffering capacity of the sealing gasket, reducing the impact force, and further reducing the damage of the valve disc to the valve body. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of the soft-seal three-way shut-off valve according to an embodiment of this application;

[0028] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0029] In the diagram: 10. Valve body; 11. Inlet; 12. Outlet; 13. Reversing port; 14. Flow hole; 15. Moving chamber; 20. Valve disc; 21. Hook; 22. Sealing gasket; 221. Fleece; 222. Receiving groove; 223. Cavity; 23. Positioning plate; 30. Drive assembly; 31. Cylinder; 32. Valve stem; 40. Support plate; 50. Support spring; 60. Oil-impregnated sponge; 70. Push spring. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0031] This application discloses a soft-seal three-way shut-off valve. (Refer to...) Figure 1 and Figure 2 The soft-seal three-way shut-off valve includes a valve body 10 and a valve disc 20. The valve body 10 is placed vertically. An inlet 11 and a reversing port 13 are provided on the side wall of the valve body 10, with the inlet 11 and reversing port 13 facing each other and the reversing port 13 located above the inlet 11. An outlet 12 is provided at the bottom of the valve body 10. A moving cavity 15 is provided on the inner wall of the valve body 10, and both the inlet 11 and the outlet 12 communicate with the moving cavity 15. The reversing port 13 is provided on the side wall of the valve body 10 and communicates with the moving cavity 15 through a flow hole 14. The flow hole 14 and the outlet 12 are arranged vertically opposite each other. The valve disc 20 is located in the moving cavity 15, that is, between the flow hole 14 and the outlet 12. A drive assembly 30 is provided inside the valve body 10, and the drive assembly 30 is connected to the valve disc 20 to drive the valve disc 20 to move between the flow hole and the outlet 12.

[0032] In the initial state, the drive assembly 30 drives the valve disc 20 to the flow hole 14, thereby blocking the flow hole 14. This ensures that the moving chamber 15 is only connected to the inlet 11 and the outlet 12. When the medium enters from the inlet 11 and reaches the moving chamber 15, it can only flow out from the outlet 12. When the drive assembly 30 is used to drive the valve disc 20 to move within the moving chamber 15 until it reaches the outlet 12 and blocks it, the moving chamber 15 is only connected to the inlet 11 and the reversing port 13. This allows the medium to flow in from the inlet 11, then through the moving chamber 15 and out from the reversing port 13, achieving the purpose of reversing.

[0033] Reference Figure 1 and Figure 2 The drive assembly 30 includes a cylinder 31 and a valve stem 32. The cylinder 31 is installed inside the valve body 10, and its output end is connected to the valve stem 32. The end of the valve stem 32 away from the cylinder 31 is fixed to the valve disc 20. The cylinder 31 can be a linear cylinder, and the valve stem 32 can be made of stainless steel, which has good corrosion resistance and strength. The length of the valve stem 32 can be adjusted according to the dimensions of the valve body 10 to ensure accurate movement of the valve disc 20 within the moving chamber 15.

[0034] Reference Figure 1 and Figure 2 To increase the stability of the valve stem 32's movement, a support plate 40 is fitted onto the valve stem 32. The support plate 40 is fixed to the valve stem 32, and its peripheral sidewall abuts against the inner wall of the valve stem 32. When the cylinder 31 drives the valve stem 32 to move, the support plate 40 slides on the sidewall of the valve body 10. The support plate 40 can be made of a wear-resistant material, such as polytetrafluoroethylene (PTFE), to reduce frictional resistance. The shape of the support plate 40 can be rectangular or circular, matched to the shape of the inner wall of the valve body 10 to ensure a stable sliding effect.

[0035] Reference Figure 1 and Figure 2 A support spring 50 is also provided between the support plate 40 and the valve body 10. One end of the support spring 50 is fixed to the valve body 10, and the other end is fixed to the support plate 40. The elastic force of the support spring 50 supports the support plate 40, so that the valve stem 32 drives the valve disc 20 to abut against the inner wall of the moving cavity 15, blocking the connecting hole, so that in the initial state, the inlet 11 of the three-way shut-off valve is only connected to the outlet 12.

[0036] Reference Figure 1 and Figure 2When the valve disc 20 moves within the moving cavity 15, to reduce damage to the valve body 10, sealing gaskets 22 are provided on both the upper and lower sides of the valve disc 20. The sealing gaskets 22 are made of rubber. Specifically, a hook strap 21 is fixed to the valve disc 20, and a fleece strap 221 is fixed to the sealing gasket 22. The fleece strap 221 can fit against the hook strap 21, thereby fixing the gasket on the valve disc 20.

[0037] When the valve disc 20 blocks one end of the outlet 12 or the flow hole 14, the side wall of the valve disc 20 is in contact with the inner wall of the moving cavity 15. That is, the sealing gasket 22 is pressed against the inner wall of the moving cavity 15, and the sealing gasket 22 plays a sealing role. The sealing gasket 22 can deform to fill the gap between the valve disc 20 and the inner wall of the moving cavity 15, making the valve disc 20 and the inner wall of the moving cavity 15 more tightly, thus improving the sealing performance. At the same time, the sealing gasket 22 also plays a buffering role, reducing the impact between the valve disc 20 and the inner wall of the valve body 10, thereby improving the durability of the valve.

[0038] Reference Figure 1 and Figure 2 To increase the buffering capacity of the sealing gasket 22, a cavity 223 is provided inside the sealing gasket 22. A push spring 70 is provided in the cavity 223, and the end of the push spring 70 is fixed to the inner wall of the cavity 223. The push spring 70 is used to press the sealing gasket 22 against the inner wall of the moving cavity 15. When the valve disc 20 moves and abuts against the inner wall of the moving cavity 15, the push spring 70 is compressed by external force and deforms, thereby storing energy to slow down the moving speed of the valve disc 20, thereby improving the buffering capacity of the sealing gasket 22, reducing the impact force, and further reducing the damage of the valve disc 20 to the valve body 10.

[0039] Reference Figure 1 and Figure 2 To increase the stability of the sealing gasket 22 mounted on the valve disc 20, a positioning plate 23 is fixed on the periphery of the valve disc 20, and the positioning plate 23 covers the connection between the hook band 21 and the felt band 221. The positioning plate 23 restricts the periphery of the sealing gasket 22, preventing the sealing gasket 22 from moving in a direction parallel to the hook band 21. This prevents the felt band 221 from shifting out of the hook band 21 from its edge, thus making it less likely for the sealing gasket 22 to separate from the valve disc 20, thereby increasing the stability of the sealing gasket 22 mounted on the valve disc 20.

[0040] Reference Figure 1 and Figure 2In order to reduce wear on the inner wall of the moving cavity 15 when the valve disc 20 shakes, a receiving groove 222 is provided on the side wall of the sealing gasket 22 away from the valve disc 20. An oil-impregnated sponge 60 is embedded in the receiving groove 222. When the sealing gasket 22 abuts against the inner wall of the moving cavity 15, the oil-impregnated sponge 60 contacts the inner wall of the moving cavity 15 and seeps lubricating oil onto the inner wall of the moving cavity 15. The lubricating oil plays a lubricating role, making it less likely for wear to occur between the sealing gasket 22 and the inner wall of the moving cavity 15, thus extending the service life of the sealing gasket 22 and the valve body 10.

[0041] The implementation principle of a soft-seal three-way shut-off valve according to an embodiment of this application is as follows: In the initial state, the drive assembly 30 drives the valve disc 20 to the flow hole 14, thereby blocking the flow hole 14, so that the moving chamber 15 is only connected to the inlet 11 and the outlet 12. When the medium enters from the inlet 11 and reaches the moving chamber 15, the medium can only flow out from the outlet 12. When the drive assembly 30 is used to drive the valve disc 20 to move in the moving chamber 15 until the valve disc 20 moves to the outlet 12 and blocks the outlet 12, the moving chamber 15 is only connected to the inlet 11 and the reversing port 13, so that the medium flows in from the inlet 11, flows out through the moving chamber 15 and then flows out from the reversing port 13, achieving the purpose of reversing.

[0042] When valve disc 20 blocks one end of outlet 12 or flow hole 14, the side wall of valve disc 20 is in contact with the inner wall of moving cavity 15, that is, the sealing gasket 22 is pressed against the inner wall of moving cavity 15, and the sealing gasket 22 plays a sealing role. The sealing gasket 22 can deform to fill the gap between valve disc 20 and inner wall of moving cavity 15, making the valve disc 20 and inner wall of moving cavity 15 more tightly, thus improving the sealing performance. At the same time, the sealing gasket 22 also plays a buffering role, preventing valve disc 20 from directly impacting the inner wall of moving cavity 15, thus preventing damage to the inside of valve body 10.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A soft-seal three-way stop valve characterized by comprising: The utility model provides a valve, including valve body (10) and valve clack (20), the inlet (11) and outlet (12) are seted up on valve body (10), and the mobile cavity (15) is equipped in valve body (10), and the inlet (11) and outlet (12) all communicate with mobile cavity (15), and the side wall of valve body (10) is seted up with reversing port (13), and reversing port (13) communicates with mobile cavity (15) through flow passage (14), and flow passage (14) is opposite to outlet (12) and is arranged, and valve clack (20) is equipped in mobile cavity (15), and drive assembly (30) is equipped in valve body (10), and drive assembly (30) is connected with valve clack (20), is used for driving valve clack (20) and moves between the communication hole and outlet (12), and the side wall of valve clack (20) is equipped with sealing gasket (22), and sealing gasket (22) can be in contact with the inner wall of mobile cavity (15) and is used for blocking the communication hole or outlet (12). The sealing gasket (22) is provided with a cavity (223) therein, and a pushing spring (70) is arranged in the cavity (223). The end of the pushing spring (70) is fixed on the inner wall of the cavity (223), and the pushing spring (70) is used for tightly abutting the sealing gasket (22) against the inner wall of the mobile cavity (15).

2. The soft-seal tee stop valve of claim 1, wherein, The drive assembly (30) comprises a cylinder (31) and a valve rod (32). The cylinder (31) is arranged in the valve body (10), and the output end of the cylinder (31) is connected with the valve rod (32). The end of the valve rod (32) away from the cylinder (31) is fixed with the valve clack (20).

3. The soft-seal tee stop valve of claim 2, wherein, The valve rod (32) is provided with a support plate (40). The output end of the cylinder (31) is fixed with the support plate (40). The support plate (40) is in contact with the side wall of the valve body (10) and can slide on the side wall of the valve body (10).

4. The soft-seal three-way stop valve according to claim 3, characterized by The valve body (10) is provided with a supporting spring (50). One end of the supporting spring (50) is fixed with the valve body (10), and the other end is fixed with the support plate (40). The supporting spring (50) is used for driving the valve clack (20) to block the flow passage (14).

5. The soft-seal tee stop valve of claim 1, wherein, The side wall of the sealing gasket (22) is provided with a containing groove (222). An oil-soaked sponge (60) is embedded in the containing groove (222). The oil-soaked sponge (60) can be in contact with the inner wall of the mobile cavity (15).

6. The soft-seal tee stop valve of claim 1, wherein, The side wall of the valve clack (20) is provided with a hook belt (21). The sealing gasket (22) is provided with a velvet belt (221). The velvet belt (221) is in contact with the hook belt (21).

7. The soft-seal three-way stop valve according to claim 6, characterized by The valve clack (20) is provided with a positioning plate (23). The positioning plate (23) is used for limiting the sliding of the sealing gasket (22) on the hook belt (21).

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