Multi-turn valve electric actuator

Abstract

The utility model discloses a kind of multi-turn valve electric actuator, it is related to the technical field of multi-turn valve electric actuator, including lower shell, upper shell, motor and transmission mechanism, movable support mechanism;The utility model is through motor, synchronous belt, the cooperation of worm gear and worm, it is convenient to meet the demand of multi-turn valve adjustment by "multi-turn rotation";By upper movable arm and lower movable arm cooperation, it is convenient to change the inclination angle of two movable arms when screw rod rotates, and cooperate the distance between lower shell and adjacent device is adjusted by screw rod rotation number, finally solve the effect that existing device cannot meet multi-turn rotation and the problem that relative displacement is needed when screw rod rotates.

Description

Technical Field

[0001] This utility model relates to the technical field of electric actuators for multi-turn valves, and in particular to an electric actuator for multi-turn valves. Background Technology

[0002] With the continuous improvement of industrial automation, single-turn electric valve actuators cannot meet the needs of remote and automatic control, nor can they meet the various complex control requirements in industrial production processes. Therefore, they have been widely used in many industrial fields such as petroleum, chemical, power, and metallurgy. For example, in petrochemical production, traditional electric actuators have some shortcomings; for example, they can only rotate 90 degrees and cannot meet the requirements of multi-turn rotation; and when the connecting screw of the existing electric actuator rotates, the displacement of one end of the screw causes relative displacement between the actuator and the valve body, making it difficult to achieve transmission. Therefore, the above problems need to be solved. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a multi-turn electric valve actuator.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a multi-turn valve electric actuator, comprising a lower housing and an upper housing mounted on the upper end of the lower housing, a support crossarm mounted on both sides of the bottom surface of the lower housing, an auxiliary mechanism mounted on the lower end of the support crossarm, and a positioning mounting groove provided on the top surface of the lower housing, with a transmission mechanism inside the positioning mounting groove; the auxiliary mechanism includes an upper movable arm hinged to the inner side of the bottom end of the support crossarm and a lower movable arm hinged to the inner side of the bottom end of the upper movable arm; the transmission mechanism includes a worm mounted on the top surface of the lower housing and a motor mounted on the upper end of the worm; two bearings are rotatably connected to the worm, and the bottom ends of the two bearings are fixedly connected to the top surface of the lower housing; a first synchronous pulley and a second synchronous pulley are respectively mounted on the output shaft of the motor and one end of the worm.

[0005] Preferably, two valve connectors are hinged to the outer side of the bottom end of the lower movable arm. The valve connectors are parallel to the lower housing and have two mounting holes for connecting valves.

[0006] Preferably, a synchronous belt is sleeved on the outer side of the first and second synchronous pulleys, and a worm wheel is engaged with one side of the worm gear.

[0007] Preferably, the worm wheel has a through-hole in the middle of the worm wheel, and multiple auxiliary grooves are equally spaced through-holes on the worm wheel.

[0008] Preferably, the motor is mounted on the top surface of the upper housing, and a transmission groove for cooperating with the transmission mechanism is provided through the upper housing.

[0009] Preferably, the worm gear is rotatably mounted at the center of the top surface of the lower housing.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the cooperation of a motor, worm gear, and worm, facilitates the satisfaction of multi-turn valve adjustment needs through "multi-turn rotation"; furthermore, through the cooperation of the upper and lower movable arms, it facilitates the change of the tilt angle of the two movable arms when the lead screw rotates, thereby adjusting the distance between the lower housing and adjacent devices in conjunction with the number of turns of the lead screw, avoiding operational problems caused by changes in the position of the lead screw; ultimately solving the problems of existing devices being unable to satisfy the effect of multi-turn rotation and the easy displacement of the lead screw during rotation. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0012] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this utility model;

[0013] Figure 2 This is a three-dimensional schematic diagram of the top structure of the lower shell proposed in this utility model;

[0014] Figure 3 This is a schematic diagram of the auxiliary mechanism structure proposed in this utility model;

[0015] Figure 4 This is a schematic diagram of the motor structure proposed in this utility model;

[0016] Figure 5 This is a schematic diagram of the transmission mechanism structure proposed in this utility model;

[0017] Figure 6 This is a schematic diagram of the worm gear structure proposed in this utility model.

[0018] The numbers in the diagram are: 1. Lower housing; 2. Support cross arm; 3. Upper movable arm; 4. Lower movable arm; 5. Valve connector; 6. Upper housing; 7. Auxiliary groove; 8. Motor; 9. Worm gear; 10. First synchronous pulley; 11. Second synchronous pulley; 12. Synchronous belt; 13. Bearing; 14. Worm gear; 15. Worm gear center hole. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Example: See Figure 1-6 This utility model discloses a multi-turn electric valve actuator, comprising a lower housing 1 and an upper housing 6 mounted on the upper end of the lower housing 1. The lower housing 1 facilitates the installation of a support crossarm 2. Support crossarms 2 are mounted on both sides of the bottom surface of the lower housing 1, connecting an auxiliary mechanism and the lower housing 1. An auxiliary mechanism is mounted at the lower end of the support crossarm 2, which helps reduce the device's footprint when the valve is opened. A positioning mounting groove is provided on the top surface of the lower housing 1, and a transmission mechanism is located within the positioning mounting groove. The transmission mechanism facilitates the opening and closing of the valve. The auxiliary mechanism includes an upper movable arm 3 hinged to the inner side of the bottom end of the support crossarm 2 and a lower movable arm 4 hinged to the inner side of the bottom end of the upper movable arm 3, which facilitates height adjustment when cooperating with valve opening and closing. The transmission mechanism includes a worm gear 9 mounted on the top surface of the lower housing 1 and a motor 8 mounted on the upper end of the worm gear 9. Two bearings 13 are rotatably connected to the worm gear 9, and the bottom ends of the two bearings 13 are fixedly connected to the top surface of the lower housing 1.

[0021] In this invention, a first synchronous pulley 10 and a second synchronous pulley 11 are respectively installed on the output shaft of the motor 8 and one end of the worm 9. Two valve connectors 5 are hinged to the outer side of the bottom end of the lower movable arm 4, which facilitates the connection of the device and the valve. The valve connectors 5 are parallel to the lower housing 1, and have two mounting holes for connecting the valve. A synchronous belt 12 is sleeved on the outer side of the first synchronous pulley 10 and the second synchronous pulley 11, which facilitates the motor 8 to drive the worm 9 to rotate. The first synchronous pulley 10 and the second synchronous pulley 11 facilitate the installation of the synchronous belt 12. A worm wheel 14 is engaged with the worm 9 on one side, and a convex-shaped worm wheel center hole 15 is opened through the middle of the worm wheel 14, which facilitates the installation of the lead screw. Multiple auxiliary slots 7 are opened through the worm wheel 14 at equal intervals. The motor 8 is installed on the top surface of the upper housing 6, and a transmission slot for the transmission mechanism is opened through the upper housing 6. The worm wheel 14 is rotatably installed at the center of the top surface of the lower housing 1.

[0022] Working principle: When using this utility model, first connect the power supply and start the motor 8. The motor 8 rotates through the first synchronous pulley 10, and then drives the second synchronous pulley 11 to rotate through the synchronous belt 12, which in turn drives the worm 9 to rotate. With the cooperation of the bearing 13, the worm 9 will not affect the lower housing 1. The worm 9 drives the worm wheel 14 to rotate, and the worm wheel 14 drives the lead screw to rotate. The worm wheel center hole 15 in the center of the worm wheel 14 is conducive to the installation of the lead screw. When the lead screw rotates, the lower housing 1 is displaced due to the thread transmission of the lead screw. When the lower housing 1 is displaced, it will affect the tilt angle between the upper movable arm 3 and the lower movable arm 4. The upper movable arm 3 and the lower movable arm 4 are hinged and folded and compressed, causing the lower housing 1 to drive one end of the lead screw to move. The displacement of the lower housing 1 prevents the lead screw from moving in the opposite direction when it rotates, so that one end of the lead screw always stays in the same position.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-turn electric valve actuator, comprising a lower housing (1) and an upper housing (6) mounted on the upper end of the lower housing (1), characterized in that: The lower housing (1) has a support cross arm (2) installed on both sides of the bottom surface. An auxiliary mechanism is installed at the lower end of the support cross arm (2). A positioning mounting groove is opened on the upper surface of the lower housing (1). A transmission mechanism is installed in the positioning mounting groove. The auxiliary mechanism includes an upper movable arm (3) hinged to the inner side of the bottom end of the support cross arm (2) and a lower movable arm (4) hinged to the inner side of the bottom end of the upper movable arm (3). The transmission mechanism includes a worm gear (14) installed inside the upper housing (6) of the lower housing (1), a worm (9) and a motor (8) installed on the upper end of the worm (9). Two bearings (13) are rotatably connected to the worm (9). The bottom ends of the two bearings (13) are fixed to the top surface of the lower housing (1). A first synchronous pulley (10) and a second synchronous pulley (11) are respectively installed on the output shaft of the motor (8) and one end of the worm (9).

2. The multi-turn electric valve actuator according to claim 1, characterized in that: Two valve connectors (5) are hinged to the outer side of the bottom end of the lower movable arm (4). The valve connectors (5) are parallel to the lower housing (1), and two mounting holes for connecting valves are provided on the valve connectors (5).

3. The multi-turn electric valve actuator according to claim 1, characterized in that: The first synchronous pulley (10) and the second synchronous pulley (11) are fitted with a synchronous belt (12), and a worm wheel (14) is engaged on one side of the worm (9).

4. The multi-turn electric valve actuator according to claim 3, characterized in that: The worm wheel (14) has a through-hole (15) in the middle, and multiple auxiliary grooves (7) are equally spaced through-holes on the worm wheel (14).

5. The multi-turn electric valve actuator according to claim 1, characterized in that: The motor (8) is mounted on the top surface of the upper housing (6), and a transmission groove for cooperating with the transmission mechanism is provided through the upper housing (6).

6. A multi-turn electric valve actuator according to claim 3, characterized in that: The worm gear (14) is rotatably mounted at the center of the top surface of the lower housing (1).

Images