High-vacuum precise angle control full-sealing electric butterfly valve

Abstract

The utility model relates to the technical field of high-vacuum equipment, and particularly discloses a high-vacuum accurate angle control full-sealing electric butterfly valve which comprises a valve body, a valve shaft is arranged in the valve body, a valve plate is installed on one side of the valve shaft and located in the valve body, one end of the valve shaft penetrates through the valve body and is provided with an absolute value encoder, and the other end of the valve shaft is provided with a valve rod. The other end of the valve shaft penetrates through the valve body and is connected with a motor, movable sealing pressing plates are arranged on the two sides of the valve body, bearings matched with the valve shaft are installed in the movable sealing pressing plates, bearing pressing plates are installed on the outer sides of the movable sealing pressing plates, and the bearing pressing plates are located on one sides of the bearings. The opening and closing are convenient, rapid and labor-saving; the electric butterfly valve can be quickly opened and closed, operation is easy and convenient, and manpower requirements are reduced; the structure is simple, the size is small and the weight is light; the electric butterfly valve is simple in design and convenient to mount and maintain; good sealing is achieved under low pressure; in a low-pressure environment, the electric butterfly valve can achieve a good sealing effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of high vacuum equipment, and in particular relates to a high vacuum precise angle controlled fully sealed electric butterfly valve. Background Art

[0002] Vacuum electric butterfly valve is a valve widely used in high vacuum equipment. It controls the opening and closing of the valve through an electric actuator to achieve the cutoff, connection and flow rate adjustment of the gas in the pipeline.

[0003] Since the high vacuum electric butterfly valve needs to accurately adjust the valve plate to the closed angle when achieving the closing function, the sealing ring and the sealing surface have a large friction when achieving the sealing fit. At the same time, in order to overcome the pressure difference at both ends of the valve plate, a large torque motor is required to stably overcome its friction. Therefore, the existing electric butterfly valve faces problems such as large rotation mechanism, difficulty in accurately reading and controlling the rotation angle, and unstable sealing performance. Utility Model Content

[0004] The purpose of the utility model is to provide a high vacuum precise angle control fully sealed electric butterfly valve to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A high vacuum precise angle controlled fully sealed electric butterfly valve, comprising:

[0007] The valve body has a valve shaft provided inside the valve body, a valve plate is installed on one side of the valve shaft, and the valve plate is located inside the valve body. One end of the valve shaft passes through the valve body and is installed with an absolute encoder, which can accurately read the angle of rotation. The other end of the valve shaft passes through the valve body and is connected to a motor, which is used to drive the valve shaft to rotate and realize the control of the rotation of the valve plate. Dynamic sealing pressure plates are provided on both sides of the valve body, and bearings matching the valve shaft are installed inside the dynamic sealing pressure plates. Bearing pressure plates are installed on the outside of the dynamic sealing pressure plates, and the bearing pressure plates are located on one side of the bearing to further enhance the fastening effect of the bearing. The valve shaft is embedded in the bearing to ensure that the valve body is fixed while the valve shaft rotates.

[0008] Preferably, a rubber ring is installed at the outer end of the valve plate, which can achieve high-strength sealing with the valve body during rotation.

[0009] Preferably, a motor cover is installed on one side of the valve body through a motor bracket, and the motor is located inside the motor cover.

[0010] Preferably, the output end of the motor is connected to the valve shaft through a coupling, which is conducive to controlling the rotation of the valve shaft.

[0011] Preferably, sealing rings are installed on both sides of the valve shaft to perform a sealing function, and the sealing rings are located inside the valve body.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. Opening and closing are convenient, quick and labor-saving; the electric butterfly valve can quickly complete the opening and closing operation, is easy to operate and reduces manpower requirements;

[0014] 2. Simple structure, small size and light weight; the electric butterfly valve has a simple design and is easy to install and maintain;

[0015] 3. Good sealing under low pressure; under low pressure environment, electric butterfly valve can achieve good sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 It is a partially enlarged schematic diagram of the utility model;

[0019] In the figure: 1. Motor cover; 2. Motor; 3. Motor bracket; 4. Bearing pressure plate; 5. Bearing; 6. Valve plate; 7. Valve body; 8. Absolute encoder; 9. Valve shaft; 10. Sealing ring; 11. Dynamic sealing pressure plate; 12. Coupling. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example:

[0022] See also Figure 1-Figure 3 As shown, a high vacuum precise angle control fully sealed electric butterfly valve comprises:

[0023] The valve body 7 is provided with a valve shaft 9 inside the valve body 7, and a valve plate 6 is installed on one side of the valve shaft 9. The valve plate 6 is located inside the valve body 7. One end of the valve shaft 9 passes through the valve body 7 and is installed with an absolute encoder 8, which can accurately read the angle of rotation. The other end of the valve shaft 9 passes through the valve body 7 and is connected to a motor 2, which is used to drive the valve shaft 9 to rotate and control the rotation of the valve plate 6. The motor 2 is set to a large-torque deceleration stepper motor. Dynamic sealing pressure plates 11 are provided on both sides of the valve body 7. Bearings 5 ​​that match the valve shaft 9 are installed inside the dynamic sealing pressure plate 11. Bearing pressure plates 4 are installed on the outside of the dynamic sealing pressure plate 11. The bearing pressure plate 4 is located on one side of the bearing 5 to further enhance the fastening effect of the bearing 5. The valve shaft 9 is embedded in the bearing 5 to ensure that the valve body 7 is fixed while the valve shaft 9 rotates.

[0024] The utility model discloses a high vacuum precise angle controlled fully sealed electric butterfly valve. A sealing rubber ring is installed on the outer ring of the valve plate 6. The rotation of the valve shaft 9 and the valve plate 6 is controlled by a large torque deceleration stepper motor. The end of the valve shaft 9 is connected to an absolute encoder 8, which can accurately read the rotation angle of the valve plate 6.

[0025] refer to Figure 1-Figure 3 As shown, a rubber ring is installed at the outer end of the valve plate 6, which can achieve high-strength sealing with the valve body 7 during the rotation process.

[0026] refer to Figure 1-Figure 3 As shown, a motor cover 1 is mounted on one side of the valve body 7 via a motor bracket 3 , and the motor 2 is located inside the motor cover 1 .

[0027] refer to Figure 1-Figure 3 As shown, the output end of the motor 2 is connected to the valve shaft 9 through a coupling 12, which is beneficial to controlling the rotation of the valve shaft 9.

[0028] refer to Figure 1-Figure 3 As shown, sealing rings 10 are installed on both sides of the valve shaft 9 to play a sealing role. The sealing rings 10 are located inside the valve body 7.

[0029] The operating principle is that after receiving a control signal, the electric actuator drives the valve shaft 9 to rotate, thereby driving the valve plate 6 to rotate, changing the size of the passage through the valve. When the valve plate 6 is completely in contact with the valve body 7, the valve is closed; when the valve plate 6 and the valve body 7 are completely separated, the valve is fully open. In addition, the size of the passage through the valve can be controlled by rotating the valve plate 6 to different angles, thereby achieving precise control of the fluid flow rate.

[0030] The beneficial effects of the utility model are:

[0031] 1. Opening and closing are convenient, quick and labor-saving; the electric butterfly valve can quickly complete the opening and closing operation, is easy to operate and reduces manpower requirements;

[0032] 2. Simple structure, small size and light weight; the electric butterfly valve has a simple design and is easy to install and maintain;

[0033] 3. Good sealing under low pressure; under low pressure environment, electric butterfly valve can achieve good sealing effect.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high vacuum precision angle control fully sealed electric butterfly valve, characterized in that: include: A valve body (7), wherein a valve shaft (9) is provided inside the valve body (7), a valve plate (6) is installed on one side of the valve shaft (9), and the valve plate (6) is located inside the valve body (7), one end of the valve shaft (9) passes through the valve body (7) and is installed with an absolute encoder (8), and the other end of the valve shaft (9) passes through the valve body (7) and is connected to a motor (2), dynamic sealing pressure plates (11) are provided on both sides of the valve body (7), a bearing (5) matching the valve shaft (9) is installed inside the dynamic sealing pressure plate (11), and a bearing pressure plate (4) is installed on the outside of the dynamic sealing pressure plate (11), and the bearing pressure plate (4) is located on one side of the bearing (5).

2. The high vacuum precise angle control fully sealed electric butterfly valve according to claim 1, characterized in that: A rubber ring is installed on the outer end of the valve plate (6).

3. The high vacuum precise angle control fully sealed electric butterfly valve according to claim 2, characterized in that: A motor cover (1) is mounted on one side of the valve body (7) via a motor bracket (3), and the motor (2) is located inside the motor cover (1).

4. The high vacuum precise angle control fully sealed electric butterfly valve according to claim 3, characterized in that: The output end of the motor (2) is connected to the valve shaft (9) via a coupling (12).

5. The high vacuum precise angle control fully sealed electric butterfly valve according to claim 1, characterized in that: Sealing rings (10) are installed on both sides of the valve shaft (9), and the sealing rings (10) are located inside the valve body (7).

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