Swing valve driver

Abstract

The utility model relates to the technical field of swing valves, in particular to a swing valve driver which comprises a shell, a motor and a rotating shaft which are arranged side by side in the left-right direction are arranged in the shell, an annular protruding block is arranged on the outer wall of the rotating shaft, the shell is provided with a groove body for supporting and limiting falling of the annular protruding block, and a fan-shaped plate is arranged at the top end of the rotating shaft. The bottom end of the rotating shaft protrudes out of the shell to be connected with an external connecting rod, the end of the sector plate is connected with the rotating shaft, a plurality of tooth grooves which vertically extend and are distributed at equal intervals are formed in the arc-shaped side face of the sector plate, a gear meshed with the tooth grooves is arranged on a driving shaft of the motor, and a circuit board is arranged above the motor. The motor is fixed to the top face of the interior of the shell, the circuit board is fixed to the top face of the interior of the shell and electrically connected with the motor, a stroke sensor is arranged on the portion, on the swing path of the sector plate, of the shell, and the stroke sensor is electrically connected with the circuit board. And the swing position of the externally connected valve clack is accurate, and the angle is adjustable.

Description

Technical Field

[0001] The present application relates to the technical field of swing valves, and more particularly, to a swing valve driver. Background Art

[0002] A swing valve is a common type of valve used to control the flow and pressure of a fluid. It controls the fluid by opening and closing a swing valve flap. The swing of the valve flap is achieved by a driver. In related technologies, the driver that drives the valve flap to swing is usually a swing cylinder, specifically a swing cylinder that drives a connecting rod disposed on a drive shaft to swing, thereby driving the valve flap to swing. The accuracy of repeated positioning of the swing cylinder is not high, so that the valve flap is prone to inaccurate positioning when driving the valve flap to swing. When the valve is used in a vacuum pipeline, it is prone to air leakage. In addition, the swing valve cylinder drives the piston to swing through ventilation, so it is difficult to control the swing angle of the valve flap, and the flow and pressure of the fluid are difficult to adjust. Utility Model Content

[0003] In order to solve the problems in the related art that the valve flap is easily inaccurately positioned when the valve flap is driven to swing by a swing cylinder and the flow and pressure of the fluid are difficult to adjust, the present application provides a swing valve driver.

[0004] A swing valve driver comprises a shell, in which a motor and a rotating shaft arranged in parallel on the left and right are arranged inside the shell, an annular protrusion is arranged on the outer wall of the rotating shaft, and the shell is provided with a groove body that supports and limits the falling of the annular protrusion, a fan-shaped plate is arranged on the top of the rotating shaft, and the bottom end of the rotating shaft protrudes out of the shell and is connected to an external connecting rod, the end of the fan-shaped plate is connected to the rotating shaft, and the arc-shaped side surface of the fan-shaped plate is provided with a plurality of teeth grooves arranged equidistantly and extending vertically, a gear meshing with the teeth groove is arranged on the driving shaft of the motor, a circuit board is arranged above the motor, the circuit board is fixed to the top surface position inside the shell and is electrically connected to the motor, and the shell is provided with a stroke sensor on the swinging path of the fan-shaped plate, and the stroke sensor is electrically connected to the circuit board.

[0005] The motor drives the rotating shaft to rotate by driving the gear that meshes with the tooth grooves set in the fan plate. The transmission distance between the gear and the fan plate is precise, so that the external connecting rod connected to the rotating shaft drives the valve disc to swing accurately, which effectively reduces air leakage when used in vacuum pipelines. At the same time, through gear transmission, the swing position of the valve disc can be adjusted, which is convenient for controlling the gap between the valve disc and the valve seat, and realizing the control of the flow and pressure of the fluid. The stroke sensor and the motor are electrically connected to the circuit board to realize the start and stop of the motor when the fan plate swings to the corresponding position to achieve the purpose of stroke control.

[0006] Preferably, an elastic connection component for connecting to an external connecting rod is provided at the bottom end of the rotating shaft, and the elastic connection component includes a spring sleeve, a spring support, a compression spring and an annular pad. The annular pad is coaxially arranged with the spring sleeve and fixedly connected to the outer wall of the spring sleeve. The spring support is movably sleeved on the outer wall of the spring sleeve and is limited in rotation by the spring sleeve. The compression spring sleeve is arranged on the spring sleeve and is located between the spring support and the annular pad. The spring support is fixedly connected to the external connecting rod.

[0007] By adopting the above solution, an external pressing mechanism is used to press the external connecting rod or the valve disc fixedly connected to the external connecting rod to compress the compression spring, and the valve disc presses against the valve seat, so as to close the valve seat and cut off the fluid.

[0008] Preferably, the housing is provided with a plane bearing in the tank body.

[0009] By adopting the above technical solution, the plane bearing assists the rotation of the rotating shaft, reduces the loss caused by the friction between the rotating shaft and the housing, and makes the rotation of the rotating shaft stable.

[0010] Preferably, the housing is provided with a heat dissipation fan above the circuit board.

[0011] By adopting the above technical solution, the heat dissipation fan dissipates heat for the circuit board, thereby reducing the impact of excessive temperature of the circuit board on the operation of the circuit board.

[0012] In summary, the present application includes at least one of the following beneficial technical effects:

[0013] 1. The motor drives the rotating shaft to rotate by driving the gear meshing with the tooth groove set on the fan plate. The transmission distance between the gear and the fan plate is precise, so that the external connecting rod connected to the rotating shaft drives the valve disc to swing accurately, which effectively reduces air leakage when applied to vacuum pipelines. At the same time, through gear transmission, the swing position of the valve disc can be adjusted, which is convenient for controlling the gap between the valve disc and the valve seat, and realizing the control of the flow and pressure of the fluid. The stroke sensor and the motor are electrically connected to the circuit board to realize the start and stop of the motor when the fan plate swings to the corresponding position to achieve the purpose of stroke control.

[0014] 2. The rotating shaft is connected to the connecting rod through an elastic connecting assembly, so that an external pressing mechanism can be used to act on the valve disc to press the valve disc against the valve seat, thereby closing the valve seat and cutting off the fluid.

[0015] 3. A cooling fan is provided above the circuit board in the housing to dissipate heat from the circuit board, thereby reducing the situation where the circuit board temperature is too high and affects the operation of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the overall structure of a swing valve driver of this embodiment.

[0017] Figure 2 4 is a cross-sectional view of a swing valve driver according to this embodiment.

[0018] Figure 3 It is a schematic diagram of the connection structure of the motor, rotating shaft, fan-shaped plate and travel switch inside the shell of this embodiment.

[0019] Figure numerals: 1. Shell; 11. Limiting member; 12. Groove; 13. Plane bearing; 14. Travel sensor; 15. Cooling fan; 2. Motor; 21. Gear; 3. Rotating shaft; 31. Annular protrusion; 4. Fan-shaped plate; 41. Tooth groove; 5. Circuit board; 6. Elastic connection component; 61. Spring sleeve; 611. Vertical convex strip; 62. Spring support; 621. Slide groove; 63. Compression spring; 64. Annular pad; 65. Screw. DETAILED DESCRIPTION

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

[0021] A swing valve actuator, referring to Figure 1 , Figure 2 and Figure 3, including a shell 1, in which a motor 2 and a rotating shaft 3 are arranged in parallel on the left and right sides are arranged, the shell 1 is provided with a limiting member 11 to limit the motor 2 and lock the motor 2 in the shell 1, the outer wall of the rotating shaft 3 is provided with an annular protrusion 31, the annular protrusion 31 and the rotating shaft 3 are arranged in one piece, a groove body 12 is provided in the shell 1 to support and limit the annular protrusion 31 from falling, the shell 1 is provided with a plane bearing 13 in the groove body 12 to assist the rotation of the rotating shaft 3, and reduce the friction loss between the rotating shaft 3 and the shell 1, the rotating shaft 3 rotates in the shell 1, and the rotating shaft 3 protrudes out of the shell 1 for connection with an external connecting rod, a fan-shaped plate 4 is provided at the top of the rotating shaft 3, the end of the fan-shaped plate 4 is connected to the rotating shaft 3, and the arc-shaped side of the fan-shaped plate 4 is provided with a plurality of tooth grooves 4 arranged in a vertically extending and equidistant manner. 1. A gear 21 meshing with a tooth groove 41 is arranged on the driving shaft of the motor 2. The motor 2 drives the gear 21 to rotate to drive the fan plate 4 to swing. The swing of the fan plate 4 drives the rotating shaft 3 to rotate so that the external connecting rod drives the valve flap to swing. A circuit board 5 is arranged above the motor 2. The circuit board 5 is fixed to the top surface of the inner part of the shell 1. The motor 2 is electrically connected to the circuit board 5. The shell 1 is provided with a stroke sensor 14 on the swinging path of the fan plate 4. The number of the stroke sensors 14 is two and they are electrically connected to the circuit board 5. The stroke sensor 14 is controlled by the circuit board 5 to control the start and stop of the motor 2 to control the swing stroke of the fan plate 4. The distance between the two stroke sensors 14 is the displacement distance of the fan plate 4. The shell 1 is provided with a cooling fan 15 above the circuit board 5 to dissipate heat for the circuit board 5.

[0022] Further, refer to Figure 2 The bottom end of the rotating shaft 3 is provided with an elastic connection component 6 for elastically connecting with the external connecting rod. The elastic connection component 6 includes a spring sleeve 61, a spring support 62, a compression spring 63, an annular pad 64, and a screw 65. The spring sleeve 61 is locked and fixed to the end of the rotating shaft 3 by the screw 65. The annular pad 64 is coaxially arranged with the spring sleeve 61 and fixedly connected to the outer wall of the spring sleeve 61. The compression spring sleeve 63 is arranged on the spring sleeve 61 and abuts against the annular pad 64. The spring support 62 is movable. The movable sleeve is arranged on the outer wall of the spring sleeve 61, and the outer wall of the spring sleeve 61 is provided with a vertical convex strip 611. The spring support 62 is provided with a slide groove 621 engaged with the vertical convex strip 611. The vertical convex strip 611 limits the rotation of the spring support 62. The spring support 62 abuts against the compression spring 63. The external connecting rod is fixed on the spring support 62. When in use, the external pressing mechanism presses the external connecting rod or the valve disc fixedly connected to the external connecting rod to compress the compression spring 63, and the valve disc presses against the valve seat, which is convenient for closing the valve seat and cutting off the fluid.

[0023] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A swing valve driver, characterized in that: The invention comprises a housing (1), wherein a motor (2) and a rotating shaft (3) are arranged in parallel on the left and right sides of the housing (1), an annular protrusion (31) is arranged on the outer wall of the rotating shaft (3), the housing (1) is provided with a groove (12) for supporting and limiting the falling of the annular protrusion (31), a fan-shaped plate (4) is arranged at the top end of the rotating shaft (3), the bottom end of the rotating shaft (3) protrudes out of the housing (1) and is connected to an external connecting rod, the end of the fan-shaped plate (4) is connected to the rotating shaft (3), and the fan-shaped plate (4) is arc-shaped. A plurality of tooth grooves (41) are arranged at equal intervals in a vertically extending manner on the side surface; a gear (21) meshing with the tooth grooves (41) is arranged on the driving shaft of the motor (2); a circuit board (5) is arranged above the motor (2); the circuit board (5) is fixed to the top surface of the housing (1) and is electrically connected to the motor (2); a travel sensor (14) is arranged on the housing (1) on the swinging path of the fan plate (4); and the travel sensor (14) is electrically connected to the circuit board (5).

2. A swing valve actuator according to claim 1, characterized in that: The bottom end of the rotating shaft (3) is provided with an elastic connection component (6) for connecting with an external connecting rod, and the elastic connection component (6) comprises a spring sleeve (61), a spring support (62), a compression spring (63) and an annular pad (64); the annular pad (64) is coaxially arranged with the spring sleeve (61) and fixedly connected with the outer wall of the spring sleeve (61); the spring support (62) is movably sleeved on the outer wall of the spring sleeve (61) and is limited in rotation by the spring sleeve (61); the compression spring (63) is sleeved on the spring sleeve (61) and is located between the spring support (62) and the annular pad (64); the spring support (62) is fixedly connected with the external connecting rod.

3. A swing valve actuator according to claim 1, characterized in that: The housing (1) is provided with a plane bearing (13) in the groove body (12).

4. A swing valve actuator according to claim 1, characterized in that: The housing (1) is provided with a heat dissipation fan (15) above the circuit board (5).

Images