Sealing seat structure of vacuum pendulum valve

Abstract

The utility model discloses a sealing seat structure of a vacuum pendulum valve, and relates to the technical field of vacuum pendulum valve sealing, the vacuum pendulum valve comprises a valve body of a hollow structure, and the valve body is provided with a valve port for fluid to pass through; a driving motor is arranged on the valve body, a valve plate is arranged in the valve body, the central axis of the valve plate is parallel to the central axis of the valve port, the valve plate is in sliding connection with an output shaft of the driving motor, and the sliding direction of the valve plate is parallel to the central axis of the valve port; a sealing seat structure is arranged in the valve body, and when the valve plate is located at the valve closing position, the sealing seat structure enables the valve plate to abut against the inner wall of the valve body so as to seal the valve port. The sealing seat structure is installed in the valve body, sealing of the sealing seat structure is controlled in a pneumatic control mode, and operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pendulum valve sealing technology, and more specifically, to a sealing seat structure for a vacuum pendulum valve. Background Technology

[0002] Vacuum valves are components used in vacuum systems to change the direction of fluid flow, regulate the flow rate, and disconnect or connect pipelines. Among them, the vacuum pendulum valve, as a type of vacuum valve, occupies an important position in the vacuum valve field due to its advantages of small footprint and fast closing speed.

[0003] For the existing mainstream pendulum valves, the valve closing action is mainly completed in two steps. First, the valve plate is swung to the closed position by the motor, and then the sealing mechanism installed in the valve body presses the valve plate against the valve port to achieve a vacuum seal.

[0004] However, the sealing mechanism on some existing pendulum valves is inconvenient to operate. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a sealing seat structure for a vacuum pendulum valve.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A sealing seat structure for a vacuum pendulum valve is disclosed. The vacuum pendulum valve includes a hollow valve body with a valve port for fluid passage. A drive motor is mounted on the valve body, and a valve plate is disposed within the valve body. The central axis of the valve plate is parallel to the central axis of the valve port. The valve plate is slidably connected to the output shaft of the drive motor, and the sliding direction of the valve plate is parallel to the central axis of the valve port. A sealing seat structure is provided within the valve body. When the valve plate is in the closed position, the sealing seat structure causes the valve plate to abut against the inner wall of the valve body to seal the valve port.

[0008] Furthermore, in this utility model, the aforementioned sealing seat structure includes a spring, a piston, a connecting rod, and a sealing ring, all disposed within the valve body and connected sequentially. An air intake chamber is provided within the valve body. The piston is slidably and sealingly connected to the air intake chamber. The extension / retraction direction of the spring, the sliding direction of the piston, the central axis of the connecting rod, and the central axis of the sealing ring are all parallel to the central axis of the valve port. The sealing ring is disposed close to the valve plate, and a sealing ring is provided on the side wall of the sealing ring close to the valve plate. The air intake chamber is connected to an air intake pipe.

[0009] Furthermore, in this utility model, the valve port has an inlet and an outlet that are arranged opposite to each other, and the direction from the inlet to the outlet is parallel to the central axis of the valve port; the spring is arranged close to the inlet, and the sealing ring is arranged close to the outlet.

[0010] The beneficial effects of this utility model are:

[0011] This utility model provides a sealing seat structure for a vacuum pendulum valve. By installing the sealing seat structure inside the valve body, the sealing of the sealing seat structure is controlled by pneumatic control, which facilitates operation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0013] Figure 2 for Figure 1 Top view;

[0014] Figure 3 for Figure 1 Exploded view;

[0015] Figure 4 for Figure 2 Sectional view of section AA;

[0016] Figure 5 for Figure 4 A magnified view of a section at point B.

[0017] In the diagram: 101-valve body; 201-valve port; 301-valve plate; 401-spring; 402-piston; 403-connecting rod; 404-sealing ring; 405-intake chamber; 406-sealing ring. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Please see Figure 1-5 This utility model provides a technical solution:

[0020] A sealing seat structure for a vacuum pendulum valve is installed inside the vacuum pendulum valve. The vacuum pendulum valve includes a hollow valve body 101, on which a valve port 201 is provided for fluid passage. Figures 3-5From the perspective of the valve body, valve port 201 has an inlet and an outlet positioned opposite each other, with the inlet located below and the outlet above, and the direction from the inlet to the outlet is parallel to the central axis of valve port 201. A drive motor (not shown in the figure) is mounted on valve body 101, and a valve plate 301 is installed inside valve body 101. The central axis of valve plate 301 is parallel to the central axis of valve port 201, and valve plate 301 is slidably connected to the output shaft of drive motor. The sliding direction of valve plate 301 is parallel to the central axis of valve port 201. A sealing seat structure is installed inside valve body 101. The sliding connection between valve plate 301 and the output shaft of drive motor is existing technology and will not be described in detail here.

[0021] from Figures 3-5 From the perspective of the valve body 101, the sealing seat structure in this embodiment includes a spring 401, a piston 402, a connecting rod 403, and a sealing ring 404, all installed inside the valve body 101 and connected sequentially. The spring 401 is located at the bottom, and the sealing ring 404 is located at the top, below the valve plate 301. To facilitate the installation of the piston 402, an air inlet chamber 405 is provided inside the valve body 101. The piston 402 is slidably and sealingly connected to the air inlet chamber 405. The extension and retraction direction of the spring 401, the sliding direction of the piston 402, the central axis of the connecting rod 403, and the central axis of the sealing ring 404 are all parallel to the central axis of the valve port 201. A sealing ring 406 is installed on the sealing ring 404 near the top wall of the valve plate 301. The air inlet chamber 405 is connected to an air inlet pipe (not shown in the figure). The air inlet pipe is connected to a matching air pump.

[0022] Working principle:

[0023] from Figures 3-5 From the perspective of [the system], when valve port 201 needs to be opened, the air pump continuously supplies air to the area between the top of piston 402 and the top of air intake chamber 405 through the air intake pipe. As the air pressure in this area increases, piston 402 moves downward, compressing spring 401 and simultaneously driving connecting rod 403 downward. Sealing ring 404 also moves downward synchronously under the pull of connecting rod 403, thus separating the sealing ring 406 on the top wall of sealing ring 404 from valve plate 301. Then, the drive motor controls valve plate 301 to swing at a certain angle within valve body 101, thereby opening valve port 201.

[0024] When it is necessary to block the valve port 201, the drive motor controls the valve plate 301 to swing at a certain angle within the valve body 101 until the valve plate 301 completely blocks the valve port 201. Then, the air pump extracts the gas from the area between the top of the piston 402 and the top of the air intake chamber 405 through the air intake pipe. As the air pressure in this area decreases, the piston 402 moves upward under the elastic force of the bottom spring 401. The upward movement of the piston 402 pushes the connecting rod 403 to move upward synchronously, and the sealing ring 404 also moves upward synchronously under the push of the connecting rod 403 until the sealing ring 406 on the top wall of the sealing ring 404 abuts against the valve plate 301.

[0025] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A sealing seat structure for a vacuum pendulum valve, the vacuum pendulum valve comprising a hollow valve body (101), wherein a valve port (201) for fluid passage is provided on the valve body (101); a drive motor is provided on the valve body (101), a valve plate (301) is provided inside the valve body (101), the central axis of the valve plate (301) is parallel to the central axis of the valve port (201), the valve plate (301) is slidably connected to the output shaft of the drive motor, and the sliding direction of the valve plate (301) is parallel to the central axis of the valve port (201); characterized in that: The valve body (101) is provided with a sealing seat structure. When the valve plate (301) is in the closed position, the sealing seat structure causes the valve plate (301) to abut against the inner wall of the valve body (101) to seal the valve port (201).

2. The sealing seat structure of a vacuum pendulum valve according to claim 1, characterized in that: The sealing seat structure includes a spring (401), a piston (402), a connecting rod (403), and a sealing ring (404) all disposed within the valve body (101) and connected in sequence. An air intake chamber (405) is provided inside the valve body (101). The piston (402) is slidably and sealingly connected to the air intake chamber (405). The extension and retraction direction of the spring (401), the sliding direction of the piston (402), the central axis of the connecting rod (403), and the central axis of the sealing ring (404) are all parallel to the central axis of the valve port (201). The sealing ring (404) is disposed close to the valve plate (301), and a sealing ring (406) is disposed on the side wall of the sealing ring (404) close to the valve plate (301). The air intake chamber (405) is connected to an air intake pipe.

3. The sealing seat structure of a vacuum pendulum valve according to claim 2, characterized in that: The valve port (201) has an inlet and an outlet that are arranged opposite to each other, and the direction from the inlet to the outlet is parallel to the central axis of the valve port (201); the spring (401) is arranged near the inlet and the sealing ring (404) is arranged near the outlet.

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