Abrasion-free spiral surface sealing valve

Abstract

The utility model relates to the technical field of sealing valves, in particular to an abrasion-free spiral surface sealing valve. The utility model discloses an abrasion-free spiral surface sealing valve which comprises a valve body. According to the utility model, the valve plate is driven by the screw rod to enable the closed spiral sealing gasket to abut against the communicating part of the discharging cavity and the feeding cavity of the valve body, the connecting part is sealed by the closed spiral sealing gasket, and the closed spiral sealing gasket adopts a closed spiral design, so that a multi-layer sealing effect is formed between the valve plate and the connecting part; therefore, the sealing effect after the whole valve is closed is improved; after the handle is pulled forwards to drive the plug pin to be separated from the screw rod, the hand wheel is rotated to drive the valve plate to slide leftwards, and at the moment, the closed spiral sealing gasket can be separated from the communication position along with movement of the valve plate, so that friction loss generated between the closed spiral sealing gasket and the valve body in the moving process can be prevented; and therefore, the service life of the closed spiral sealing gasket is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of sealing valve technology, specifically a wear-free spiral surface sealing valve. Background Technology

[0002] Valves control the flow of media in pipelines through movable mechanisms. The most common method is to apply torque to rotate or lift the valve core to achieve the purpose of opening and closing. Therefore, the reliability of valve sealing is the most important performance characteristic. Traditional sealing valves achieve sealing by having a sealing ring on the outside of the valve plate fit against the valve body. However, when the valve is opened or closed, friction occurs between the sealing ring on the outside of the valve plate and the valve body, which leads to wear of the sealing ring and reduces its service life. To address this issue, technological innovations are made based on existing sealing valves. Utility Model Content

[0003] The purpose of this invention is to provide a wear-free spiral surface sealing valve to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a wear-free spiral surface sealing valve, comprising:

[0005] The valve body has an inlet chamber on its right side and an outlet chamber at its bottom, which are connected to the inlet chamber. The diameter of the outlet chamber is larger than that of the inlet chamber. A first through hole is provided on the left side of the valve body, and two sets of second through holes are provided evenly on the left side of the valve body. A sealing component is installed in the outlet chamber, and a locking component is installed on the left side of the valve body.

[0006] Preferably, the sealing assembly includes a handwheel, a screw is provided on the right side of the handwheel, a connecting sleeve is rotatably sleeved on the right side of the screw, a valve plate is provided on the right side of the connecting sleeve, a closed spiral sealing gasket is provided on the right side of the valve plate, an internal thread support seat is screwed to the outer wall of the screw, and a locking hole is provided through the front side of the screw.

[0007] Preferably, the internal threaded support seat is fixedly installed in the discharge chamber of the valve body, the screw is rotatably installed in the discharge chamber of the valve body, the left side of the screw passes through the first through hole of the valve body and is connected to the handwheel, the valve plate is slidably installed in the discharge chamber of the valve body, the right side of the closed spiral sealing gasket is in contact with the right side of the inner wall of the discharge chamber of the valve body and corresponds to the inlet chamber of the valve body, and the diameter of the valve plate is smaller than the diameter of the discharge chamber of the valve body, but larger than the diameter of the inlet chamber of the valve body.

[0008] Preferably, two sets of guide rods are evenly arranged on the left side of the valve plate. The left side of the guide rod passes through the second through hole of the valve body. A set of sealing rings is placed at the connection gap of the first through hole of the screw and the connection sealing point between the guide rod and the second through hole.

[0009] Preferably, the locking assembly includes a support block, a guide hole is provided through the front side of the support block, a pin is provided in the guide hole, a handle is provided on the front side of the pin, the handle is located on the front side of the support block, and a spring is provided between the handle and the support block, the spring being located on the outer ring of the pin.

[0010] Preferably, the support block is located on the left side of the valve body, and the rear end of the pin is inserted into the locking hole of the screw.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] In this invention, a screw drives a valve plate to press a closed spiral sealing gasket against the connection between the discharge chamber and the inlet chamber of the valve body. The connection is sealed by the closed spiral sealing gasket. Because the closed spiral sealing gasket is designed in a closed spiral shape, a multi-layer sealing effect is formed between the valve plate and the connection, thereby improving the sealing effect of the entire valve after it is closed.

[0013] Pull the handle forward to separate the pin from the screw, then turn the handwheel to slide the valve plate to the left. At this time, the closed spiral sealing gasket will separate from the connection point as the valve plate moves. This can prevent frictional wear between the closed spiral sealing gasket and the valve body during the movement, thereby improving the service life of the closed spiral sealing gasket. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a wear-free spiral surface sealing valve according to the present invention;

[0015] Figure 2 This is a partial sectional view of the left side of a wear-free spiral sealing valve according to this utility model;

[0016] Figure 3 This is a front sectional view of a wear-free spiral sealing valve according to this utility model;

[0017] Figure 4 This is a partial cross-sectional view of the right side of a wear-free spiral sealing valve according to this utility model.

[0018] In the diagram: 1. Valve body; 11. Handwheel; 12. Valve plate; 13. Closed spiral sealing gasket; 14. Connecting sleeve; 15. Screw; 16. Internal thread support seat; 17. Guide rod; 2. Pin; 21. Handle; 22. Support block; 23. Spring; 3. Sealing ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-4 A wear-free spiral sealing valve includes a valve body 1, an inlet chamber on the right side of the valve body 1, an outlet chamber at the bottom of the valve body 1, the outlet chamber being connected to the inlet chamber, the diameter of the outlet chamber being larger than the diameter of the inlet chamber, a first through hole through the left side of the valve body 1, two sets of second through holes evenly through the left side of the valve body 1, a sealing component placed in the outlet chamber, and a locking component placed on the left side of the valve body 1.

[0021] The sealing assembly includes a handwheel 11, a screw 15 fixedly mounted on the right side of the handwheel 11, a connecting sleeve 14 rotatably sleeved on the right side of the screw 15, a valve plate 12 fixedly mounted on the right side of the connecting sleeve 14, a closed spiral sealing gasket 13 fixedly mounted on the right side of the valve plate 12, an internally threaded support seat 16 screwed to the outer wall of the screw 15, a locking hole penetrating through the front side of the screw 15, the internally threaded support seat 16 fixedly mounted in the discharge chamber of the valve body 1, the screw 15 rotatably mounted in the discharge chamber of the valve body 1, the left side of the screw 15 penetrating through the first through hole of the valve body 1 and connected to the handwheel 11, the valve plate 12 slidably mounted in the discharge chamber of the valve body 1, the right side of the closed spiral sealing gasket 13 abutting against the right side of the inner wall of the discharge chamber of the valve body 1 and corresponding to the inlet chamber of the valve body 1, the valve plate 1... The diameter of 2 is smaller than the diameter of the discharge chamber of valve body 1, but larger than the diameter of the inlet chamber of valve body 1. Two sets of guide rods 17 are evenly fixed on the left side of valve plate 12. The left side of the guide rod 17 passes through the second through hole of valve body 1. A set of sealing rings 3 are installed at the connection gap of the first through hole of screw 15 and the connection sealing point between guide rod 17 and the second through hole. Screw 15 is fixed by locking assembly, so that screw 15 drives valve plate 12 to press the closed spiral sealing gasket 13 against the connection between discharge chamber and inlet chamber of valve body 1. The connection is sealed by the closed spiral sealing gasket 13. Since the closed spiral sealing gasket 13 is a closed spiral design, a multi-layer sealing effect is formed between valve plate 12 and connection, thereby improving the sealing effect after the valve is closed.

[0022] The locking assembly includes a support block 22, with a guide hole extending through its front side. A pin 2 is slidably disposed within the guide hole. A handle 21 is fixedly disposed on the front side of the pin 2, located on the front side of the support block 22. A spring 23 is fixedly disposed between the handle 21 and the support block 22, located on the outer ring of the pin 2. The support block 22 is fixedly disposed on the left side of the valve body 1. The rear end of the pin 2 is inserted into the locking hole of the screw 15. The spring 23 uses its own rebound force to drive the pin 2 into the locking hole of the screw 15 through the handle 21, thereby fixing the screw 15. After pulling the handle 21 forward to separate the pin 2 from the screw 15, the handwheel 11 can be rotated to drive the screw 15. When the screw 15 rotates, it moves to the left through the screw connection with the internal thread support seat 16. At this time, the screw 15 will rotate inside the connecting sleeve 14 and pull the connecting sleeve 14 to slide to the left. When the connecting sleeve 14 slides to the left, it will pull the valve plate 12 to move to the left. The guide rod 17 ensures that the valve plate 12 slides to the left stably. At this time, the closed spiral sealing gasket 13 will separate from the communication point as the valve plate 12 moves. This can prevent friction loss between the closed spiral sealing gasket 13 and the valve body 1 during the movement, thereby improving the service life of the closed spiral sealing gasket 13. At this time, the medium can enter the valve body 1 through the feed chamber and be discharged through the discharge chamber.

[0023] Working principle: Spring 23 uses its own rebound force to drive the pin 2 through handle 21 into the locking hole of screw 15, thereby fixing screw 15. The locking assembly then fixes screw 15, causing screw 15 to drive valve plate 12 to press the closed spiral sealing gasket 13 against the connection between the discharge and inlet chambers of valve body 1. The closed spiral sealing gasket 13 seals the connection. Because of its closed spiral design, the gasket 13 creates a multi-layered seal between valve plate 12 and the connection, improving the overall sealing effect after the valve is closed. Pulling handle 21 forward separates pin 2 from screw 15, allowing handwheel 11 to rotate and drive screw 15. When screw 15 rotates, it moves to the left through the screw connection with the internal thread support seat 16. At this time, screw 15 will rotate inside the connecting sleeve 14 and pull the connecting sleeve 14 to slide to the left. When the connecting sleeve 14 slides to the left, it will pull the valve plate 12 to move to the left. The guide rod 17 ensures that the valve plate 12 slides to the left stably. At this time, the closed spiral sealing gasket 13 will separate from the communication point as the valve plate 12 moves. This can prevent friction loss between the closed spiral sealing gasket 13 and the valve body 1 during the movement, thereby improving the service life of the closed spiral sealing gasket 13. At this time, the medium can enter the valve body 1 through the feed chamber and be discharged through the discharge chamber.

Claims

1. A wear-free spiral surface sealing valve, characterized in that, include: The valve body (1) has an inlet chamber on its right side and an outlet chamber at its bottom. The outlet chamber is connected to the inlet chamber, and the diameter of the outlet chamber is larger than that of the inlet chamber. The valve body (1) has a first through hole on its left side and two sets of second through holes evenly distributed on its left side. A sealing assembly is placed in the outlet chamber, and a locking assembly is placed on the left side of the valve body (1).

2. The wear-free spiral surface sealing valve according to claim 1, characterized in that: The sealing assembly includes a handwheel (11), a screw (15) is provided on the right side of the handwheel (11), a connecting sleeve (14) is rotatably sleeved on the right side of the screw (15), a valve plate (12) is provided on the right side of the connecting sleeve (14), a closed spiral sealing gasket (13) is provided on the right side of the valve plate (12), an internal thread support seat (16) is screwed to the outer wall of the screw (15), and a locking hole is provided through the front side of the screw (15).

3. The wear-free spiral surface sealing valve according to claim 2, characterized in that: The internal thread support seat (16) is fixedly installed in the discharge chamber of the valve body (1). The screw (15) is rotatably installed in the discharge chamber of the valve body (1). The left side of the screw (15) passes through the first through hole of the valve body (1) and is connected to the handwheel (11). The valve plate (12) is slidably installed in the discharge chamber of the valve body (1). The right side of the closed spiral sealing gasket (13) is in contact with the right side of the inner wall of the discharge chamber of the valve body (1) and corresponds to the inlet chamber of the valve body (1). The diameter of the valve plate (12) is smaller than the diameter of the discharge chamber of the valve body (1) but larger than the diameter of the inlet chamber of the valve body (1).

4. The wear-free spiral surface sealing valve according to claim 3, characterized in that: Two sets of guide rods (17) are evenly arranged on the left side of the valve plate (12). The left side of the guide rod (17) passes through the second through hole of the valve body (1). A set of sealing rings (3) are placed at the connection gap of the first through hole of the screw (15) and the connection sealing point between the guide rod (17) and the second through hole.

5. The wear-free spiral surface sealing valve according to claim 2, characterized in that: The locking assembly includes a support block (22), a guide hole is provided through the front side of the support block (22), a pin (2) is provided in the guide hole, a handle (21) is provided on the front side of the pin (2), the handle (21) is located on the front side of the support block (22), and a spring (23) is provided between the handle (21) and the support block (22), the spring (23) is located on the outer ring of the pin (2).

6. The wear-free spiral surface sealing valve according to claim 5, characterized in that: The support block (22) is located on the left side of the valve body (1), and the rear end of the pin (2) is inserted into the locking hole of the screw (15).

Images