Driver structure of vacuum pendulum valve

Abstract

The utility model discloses a driver structure of a vacuum pendulum valve, and relates to the technical field of pendulum valves, the vacuum pendulum valve comprises a valve body, the valve body is provided with a valve port, a valve plate is placed in the valve body, and one side of the valve body is provided with a machine shell; the driver structure comprises a motor, a heat insulation coupler and a thrust mechanism which are all arranged in the machine shell. The valve plate is detachably connected with the thrust mechanism. The motor controls the valve plate to swing in the valve body through the heat insulation coupler and the thrust mechanism so that the valve plate can block the valve port. The circumferential limiting mechanism can limit the rotation angle of the output shaft of the motor so as to achieve the purpose of accurately controlling the swing angle of the valve plate. On one hand, the heat insulation coupler plays a role in transmitting power, and on the other hand, heat generated by mechanisms such as a thrust mechanism in the working process can be isolated, so that the heat is not radiated to the motor; when the valve plate swings to the valve closing position, the valve plate can move by a certain distance in the direction of the central axis of the valve port and then is matched with a corresponding sealing mechanism to completely seal the valve port.

Description

Technical Field

[0001] This utility model relates to the field of pendulum valve technology, and more specifically, to a driver 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 existing mainstream pendulum valves, the valve closing action is mainly completed in two steps. First, the valve plate is controlled by a motor to swing within the valve body until it reaches the closed position. At this point, the valve plate can block the valve port, but it does not completely seal the valve port. Then, the sealing mechanism installed in the valve body pushes the valve plate to press it tightly against the valve port, thus achieving a vacuum seal.

[0004] The movement of the control valve requires the coordinated operation of multiple mechanisms, which generate heat during operation. If this heat is not insulated within a suitable space, excessive temperature may affect the normal operation of other mechanisms. Some existing pendulum valves suffer from complex structures, poor heat insulation, and inconvenience in precisely controlling the swing angle of the valve plate. Utility Model Content

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

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

[0007] A actuator 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 valve plate is placed inside the valve body, and a housing is provided on one side of the valve body. The actuator structure includes a motor, a thermally insulated coupling, and a thrust mechanism, all disposed within the housing and sequentially connected. The valve plate and the thrust mechanism are detachably connected. The motor controls the valve plate to swing within the valve body via the thermally insulated coupling and the thrust mechanism, thereby blocking the valve port.

[0008] Furthermore, in this utility model, a partition is provided inside the housing between the motor and the thrust mechanism, and the heat insulation coupling is rotatably connected to the partition; a circumferential limiting mechanism is also provided inside the housing, and the heat insulation coupling and the output shaft of the motor are connected through the circumferential limiting mechanism, which is used to limit the rotation angle of the output shaft of the motor.

[0009] Furthermore, in this utility model, the circumferential limiting mechanism includes a limiting ring disposed on the partition and a limiting sleeve disposed on the motor output shaft. The limiting sleeve is connected to the heat insulation coupling. The inner sidewall of the limiting ring has two slots spaced apart, and each slot has a limiting pin. Either limiting pin protrudes from the inner sidewall of the limiting ring. The outer circumference of the limiting sleeve has an arc-shaped segment. The center of the arc-shaped segment is located on the central axis of the limiting sleeve, and the radius of the arc-shaped segment is smaller than the radius of the limiting sleeve. The arc length of the arc-shaped segment is smaller than the circumference of the bottom circle of the limiting sleeve. When the limiting sleeve is located inside the limiting ring, the outer circumferences of the two limiting pins abut against the arc-shaped segment.

[0010] Furthermore, in this utility model, the aforementioned heat-insulating coupling includes a heat-insulating ring and a connecting ring that are interlocked with each other. The central axis of the heat-insulating ring and the central axis of the connecting ring are collinear. The heat-insulating ring is rotatably connected to the partition plate. The heat-insulating ring is drivenly connected to the limiting sleeve, and the connecting ring is drivenly connected to the thrust mechanism.

[0011] Furthermore, in this utility model, a connecting arm is provided on the outer periphery of the valve plate, and an oblong hole is provided at the end of the connecting arm away from the valve plate, and the oblong hole is engaged with the thrust mechanism.

[0012] Furthermore, in this utility model, the thrust-stopping mechanism includes a rotating sleeve rotatably disposed within the housing and a sliding sleeve fixed to the rotating sleeve by screws. One end of the rotating sleeve is connected to the connecting ring. The end of the connecting arm away from the valve plate is engaged with the sliding sleeve. The central axis of the rotating sleeve and the central axis of the sliding sleeve are both collinear with the central axis of the output shaft of the motor. A support ring is provided at the end of the sliding sleeve away from the connecting ring, and an axial fixing mechanism is provided on the sliding sleeve, which fixes the connecting arm to the support ring.

[0013] Furthermore, in this utility model, a countersunk hole is provided at the end of the rotating sleeve away from the motor, the central axis of the countersunk hole is collinear with the central axis of the output shaft of the motor, and the sliding sleeve is located inside the countersunk hole; the axial fixing mechanism includes a flexible washer and a spring both sleeved on the sliding sleeve, one end of the spring is connected to the bottom wall of the countersunk hole, and the other end is connected to the flexible washer; when the connecting arm is engaged with the sliding sleeve, the side wall of the flexible washer away from the spring abuts against the connecting arm.

[0014] The beneficial effects of this utility model are:

[0015] 1. The circumferential limiting mechanism installed inside the housing can limit the rotation angle of the motor's output shaft in order to achieve precise control of the valve plate's swing angle;

[0016] 2. The heat-insulating coupling serves two purposes: firstly, it transmits power, and secondly, it isolates the heat generated by mechanisms such as the thrust mechanism during operation, preventing this heat from being radiated to the motor and thus not affecting the normal operation of the motor.

[0017] 3. When the valve plate swings to the closed position, the valve plate can move a certain distance along the central axis of the valve port, and then cooperate with the corresponding sealing mechanism to completely seal the valve port. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the vacuum pendulum valve according to an embodiment of the present invention;

[0019] Figure 2 for Figure 1 Top view;

[0020] Figure 3 for Figure 2 Sectional view of section AA;

[0021] Figure 4 This is a schematic diagram of the assembly structure of the driver structure according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the installation structure of the limiting ring according to an embodiment of the present utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the limiting sleeve according to an embodiment of the present utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the heat-insulating coupling according to an embodiment of the present utility model;

[0025] Figure 8 for Figure 3 A magnified view of a section at point B.

[0026] In the diagram: 1-Valve body; 2-Valve port; 3-Valve plate; 4-Housing; 5-Driver structure; 51-Motor; 52-Insulated coupling; 521-Insulated ring; 522-Connecting ring; 53-Thrust mechanism; 531-Swivel sleeve; 532-Screw; 533-Sliding sleeve; 534-Supporting ring; 6-Baffle plate; 7-Circumferential limiting mechanism; 71-Limiting ring; 72-Limiting sleeve; 73-Limiting pin; 74-Arc segment; 8-Connecting arm; 9-Axial fixing mechanism; 91-Flexible gasket; 92-Spring. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1-8 This utility model provides a technical solution:

[0029] A actuator structure for a vacuum pendulum valve is disclosed. The vacuum pendulum valve includes a hollow valve body 1 with a valve port 2 for fluid passage. A valve plate 3 is placed inside the valve body 1, and a housing 4 is provided on one side of the valve body 1. The actuator structure 5 includes a motor 51, a thermally insulated coupling 52, and a thrust mechanism 53, all installed inside the housing 4 and sequentially connected. The valve plate 3 is detachably connected to the thrust mechanism 53. When it is necessary to block the valve port 2, the motor 51 controls the valve plate 3 to swing within the valve body 1 through the thermally insulated coupling 52 and the thrust mechanism 53. The valve plate 3 swings to the closed position, thus blocking the valve port 2. When it is not necessary to block the valve port 2, the valve plate 3 swings to the open position.

[0030] Since the valve plate 3 does not need to swing at a large angle within the valve body 1, the rotation angle of the output shaft of the motor 51 needs to be limited. To solve this problem, in this embodiment, a partition 6 is installed inside the housing 4 between the motor 51 and the thrust mechanism 53, and the thermal insulation coupling 52 is rotatably connected to the partition 6. A circumferential limiting mechanism 7 is also installed inside the housing 4. The circumferential limiting mechanism 7 includes a limiting ring 71 mounted on the partition 6 and a limiting sleeve 72 mounted on the output shaft of the motor 51. The limiting sleeve 72 is drively connected to the thermal insulation coupling 52. (Main reference...) Figure 5 and Figure 6 The inner wall of the limiting ring 71 has two slots spaced apart, each containing a limiting pin 73, with either pin protruding from the inner wall of the limiting ring 71. The outer periphery of the limiting sleeve 72 has an arc-shaped segment 74, the center of which is located on the central axis of the limiting sleeve 72. The radius of the arc-shaped segment 74 is smaller than the radius of the limiting sleeve 72, and the arc length is smaller than the circumference of the bottom circle of the limiting sleeve 72. When the limiting sleeve 72 is inside the limiting ring 71, the outer periphery of both limiting pins 73 abuts against the arc-shaped segment 74. In this way, the circumferential limiting mechanism 7 can limit the rotation angle of the output shaft of the motor 51, thereby facilitating precise control of the swing angle of the valve plate 3 within the valve body 1.

[0031] When the motor 51 drives the limiting sleeve 72 to rotate, the thermal insulation coupling 52 and the thrust mechanism 53 rotate synchronously under the drive of the limiting sleeve 72. This, in turn, controls the valve plate 3 to swing around the central axis of the output shaft of the motor 51 within the valve body 1 via the connecting arm 8, thereby sealing or opening the valve port 2. Figure 5 From the perspective of the valve body, when the limiting sleeve 72 rotates counterclockwise by a certain angle, the limiting pin 73 located below prevents the limiting sleeve 72 from rotating counterclockwise again; when the limiting sleeve 72 rotates clockwise by a certain angle, the limiting pin 73 located on the right prevents the limiting sleeve 72 from rotating clockwise again. This design can limit the range of movement of the valve plate 3 within the valve body 1.

[0032] Reference Figure 3 and Figure 7 In this embodiment, the heat-insulating coupling 52 includes a heat-insulating ring 521 and a connecting ring 522 that are interlocked. The two are interlocked and then fixed together with screws. The central axis of the heat-insulating ring 521 and the central axis of the connecting ring 522 are collinear, and the heat-insulating ring 521 is rotatably connected to the partition plate 6. After the driver structure 5 is assembled, the heat-insulating ring 521 is drivenly connected to the limiting sleeve 72, and the connecting ring 522 is drivenly connected to the thrust mechanism 53. By installing a heat-insulating coupling 52 (the heat-insulating ring 521 mainly serves as the heat insulation element) between the motor 51 and the transmission mechanism, the output shaft of the motor 51 and the thrust mechanism 53 are connected through this heat-insulating coupling 52. On the one hand, it transmits power; on the other hand, it isolates the heat generated by the thrust mechanism 53 and other mechanisms during operation, preventing this heat from being radiated to the motor 51, thus not affecting the normal operation of the motor 51.

[0033] Reference Figure 4 In order to facilitate the connection between the valve plate 3 and the thrust mechanism 53, a connecting arm 8 is installed on the outer periphery of the valve plate 3 in this embodiment. The end of the connecting arm 8 away from the valve plate 3 is provided with a waist-shaped hole, which is engaged with the thrust mechanism 53.

[0034] Reference Figure 3 and Figure 8 In this embodiment, the thrust-stopping mechanism 53 includes a rotating sleeve 531 rotatably disposed in the housing 4 and a sliding sleeve 533 fixed on the rotating sleeve 531 by screws 532. The top end of the rotating sleeve 531 is connected to the connecting ring 522 for transmission. The end of the connecting arm 8 away from the valve plate 3 is engaged with the sliding sleeve 533. The central axis of the rotating sleeve 531 and the central axis of the sliding sleeve 533 are both collinear with the central axis of the output shaft of the motor 51. A support ring 534 is installed at the bottom end of the sliding sleeve 533.

[0035] For existing mainstream pendulum valves, the action of closing the valve port 2 is mainly accomplished in two steps: First, the valve plate 3 is controlled by the motor 51 to swing within the valve body 1 to the closed position. At this point, the valve plate 3 can block the valve port 2, but it is not completely sealed. Then, the sealing mechanism installed in the valve body 1 pushes the valve plate 3 to press against the valve port 2, thus achieving a vacuum seal. To achieve the above process, the valve plate 3 needs to move a certain distance along the central axis of the valve port 2 when it is in the closed position, so that the valve plate 3 can completely seal the valve port 2 under the push of the sealing mechanism. Therefore, to solve the above problem, an axial fixing mechanism 9 is installed on the sliding sleeve 533. When the oblong hole on the connecting arm 8 is engaged with the sliding sleeve 533, the axial fixing mechanism 9 fixes the connecting arm 8 to the support ring 534.

[0036] Specifically, in this embodiment, a countersunk hole is provided at the bottom end of the rotating sleeve 531, and the central axis of the countersunk hole is collinear with the central axis of the output shaft of the motor 51. The sliding sleeve 533 is located inside the countersunk hole. The axial fixing mechanism 9 includes a flexible washer 91 and a spring 92 both sleeved on the sliding sleeve 533. The top end of the spring 92 is connected to the bottom wall of the countersunk hole, and its bottom end is connected to the flexible washer 91. When the connecting arm 8 is engaged with the sliding sleeve 533, the bottom wall of the flexible washer 91 abuts against the connecting arm 8.

[0037] from Figure 8 From the perspective of [unclear context], when installing the connecting arm 8, tightening screw 532 causes it to move downwards, and the sliding sleeve 533 moves downwards synchronously under the drive of screw 532. Then, the oblong hole on the connecting arm 8 is engaged with the sliding sleeve 533. Then, tightening screw 532 causes it to move upwards a certain distance and then stops. At this time, the connecting arm 8 is fixed to the support ring 534 by the axial fixing mechanism 9. When the motor 51 controls the swing of the connecting arm 8, causing the valve plate 3 to swing to the closed position, the valve plate 3 moves upwards a certain distance under the push of the sealing mechanism, and after it abuts against the corresponding inner wall of the valve body 1, it can completely seal the valve port 2.

[0038] 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 actuator structure for a vacuum pendulum valve, the vacuum pendulum valve comprising a hollow valve body (1), a valve port (2) for fluid passage on the valve body (1), a valve plate (3) placed inside the valve body (1), and a housing (4) disposed on one side of the valve body (1); characterized in that: The drive structure (5) includes a motor (51), a heat-insulating coupling (52), and a thrust mechanism (53), all of which are disposed in the housing (4) and connected in sequence. The valve plate (3) is detachably connected to the thrust mechanism (53). The motor (51) controls the valve plate (3) to swing inside the valve body (1) through the heat-insulating coupling (52) and the thrust mechanism (53) so that the valve plate (3) blocks the valve port (2).

2. The actuator structure of a vacuum pendulum valve according to claim 1, characterized in that: A partition plate (6) is also provided inside the housing (4) between the motor (51) and the thrust mechanism (53), and the heat insulation coupling (52) is rotatably connected to the partition plate (6); a circumferential limiting mechanism (7) is also provided inside the housing (4), and the output shaft of the heat insulation coupling (52) and the motor (51) is connected through the circumferential limiting mechanism (7), which is used to limit the rotation angle of the output shaft of the motor (51).

3. The actuator structure for a vacuum pendulum valve according to claim 2, characterized in that: The circumferential limiting mechanism (7) includes a limiting ring (71) disposed on the partition plate (6) and a limiting sleeve (72) disposed on the output shaft of the motor (51). The limiting sleeve (72) is connected to the heat insulation coupling (52) in a transmission manner. The inner sidewall of the limiting ring (71) has two slots spaced apart, and each slot is provided with a limiting pin (73). Any of the limiting pins (73) protrudes from the inner sidewall of the limiting ring (71). The limiting sleeve (71) is connected to the heat insulation coupling (52) in a transmission manner. 2) An arc-shaped segment (74) is provided on the outer periphery. The center of the arc-shaped segment (74) is located on the central axis of the limiting sleeve (72), and the radius of the arc-shaped segment (74) is smaller than the radius of the limiting sleeve (72), and the arc length of the arc-shaped segment (74) is smaller than the circumference of the bottom circle of the limiting sleeve (72). When the limiting sleeve (72) is located inside the limiting ring (71), the outer periphery of both limiting pins (73) abuts against the arc-shaped segment (74).

4. The actuator structure of a vacuum pendulum valve according to claim 3, characterized in that: The heat-insulating coupling (52) includes a heat-insulating ring (521) and a connecting ring (522) that are interlocked. The central axis of the heat-insulating ring (521) and the central axis of the connecting ring (522) are collinear. The heat-insulating ring (521) is rotatably connected to the partition plate (6). The heat-insulating ring (521) is drivenly connected to the limiting sleeve (72), and the connecting ring (522) is drivenly connected to the thrust mechanism (53).

5. The actuator structure of a vacuum pendulum valve according to claim 4, characterized in that: A connecting arm (8) is provided on the outer periphery of the valve plate (3). A waist-shaped hole is provided at one end of the connecting arm (8) away from the valve plate (3). The waist-shaped hole is engaged with the thrust mechanism (53).

6. The actuator structure of a vacuum pendulum valve according to claim 5, characterized in that: The thrust-stop mechanism (53) includes a rotating sleeve (531) rotatably disposed in the housing (4) and a sliding sleeve (533) fixed on the rotating sleeve (531) by screws (532). One end of the rotating sleeve (531) is connected to the connecting ring (522) in a transmission manner. The end of the connecting arm (8) away from the valve plate (3) is engaged with the sliding sleeve (533). The central axis of the rotating sleeve (531) and the central axis of the sliding sleeve (533) are both collinear with the central axis of the output shaft of the motor (51). A support ring (534) is provided at the end of the sliding sleeve (533) away from the connecting ring (522). An axial fixing mechanism (9) is provided on the sliding sleeve (533), and the axial fixing mechanism (9) fixes the connecting arm (8) on the support ring (534).

7. The actuator structure for a vacuum pendulum valve according to claim 6, characterized in that: The rotating sleeve (531) has a countersunk hole at one end away from the motor (51). The central axis of the countersunk hole is collinear with the central axis of the output shaft of the motor (51). The sliding sleeve (533) is located inside the countersunk hole. The axial fixing mechanism (9) includes a flexible pad (91) and a spring (92) both sleeved on the sliding sleeve (533). One end of the spring (92) is connected to the bottom wall of the countersunk hole, and the other end is connected to the flexible pad (91). When the connecting arm (8) is engaged with the sliding sleeve (533), the side wall of the flexible pad (91) away from the spring (92) abuts against the connecting arm (8).

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