Valve Electric Actuator

Abstract

The present invention relates to a valve electric actuator, comprising a housing, a slot, a rotating slot, a fixed shaft, a supporting device, a concave plate, a fixed block, and an adjusting motor, wherein the output shaft of the adjusting motor is threadedly connected with a square rod in the fixed block, the fixed block is provided with a square slot for accommodating the square rod, the housing comprises a positioning block in the circumference of the slot, the side of the positioning block is slidably connected with a pre-fixing device, the concave plate comprises an upper plate and a lower plate, a rotating block is provided between the upper plate and the lower plate, both sides of the rotating block are fixedly connected with threaded rods, the threaded rods are threadedly connected to the upper plate, and the threaded rods are threadedly connected to the lower plate. The present invention has the advantages of not only a pre-fixing device but also a supporting device with an adjusting function.

Description

Technical Field

[0001] The present invention relates to the technical field of electric actuators, and in particular to a valve electric actuator. Background Art

[0002] An electric actuator is a driving device that can provide linear or rotational motion. It uses a certain driving energy and works under a certain control signal. The actuator uses liquid, gas, electricity or other energy and converts it into a driving action through a motor, cylinder or other device.

[0003] When electric actuators are actually used, emergency manual operation is required if an emergency occurs. Existing actuators use AC motors, which have a large holding force. In order to achieve emergency manual operation, it is necessary to set up a manual gear on the basis of the existing transmission gear system, which is specifically used for emergency manual operation. The manual gear meshes with the gear in the gear system, and when using the manual gear for manual operation, the motor must be powered off first, and then the manual gear must be disengaged from the motor gear, and finally the manual gear can be easily turned. The current actuator needs to be installed on the corresponding equipment surface, and the current method is generally bolt connection, which is easy to shake and then loosen or even separate during operation, and requires manual pre-fixation during installation, which consumes manpower and needs to be improved. After installation, the actuator is generally in a suspended state, which is not stable enough and requires a support device. Summary of the invention

[0004] In view of the shortcomings of the prior art, the object of the present invention is to provide a valve electric actuator which has the advantages of not only a pre-fixing device but also a supporting device with an adjustment function.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a valve electric actuator comprises a shell, the shell is provided with a slot for inserting a valve stem, a rotating groove is provided at the bottom of the shell, a fixed shaft is fixedly connected in the rotating groove, a supporting device is sleeved on the fixed shaft, the supporting device comprises a concave plate rotatably connected to the fixed shaft, a fixing block fixedly connected to the concave plate is provided at the bottom of the concave plate, an adjusting motor is fixedly connected to one side of the fixing block, an output shaft of the adjusting motor is threadedly connected to a square rod in the fixing block, the fixing block is provided with a square groove for accommodating the square rod, the shell comprises a positioning block circumferentially of the slot, a pre-fixing device is slidably connected to the side of the positioning block, the concave plate comprises an upper plate and a lower plate, a rotating block is provided between the upper plate and the lower plate, threaded rods are fixedly connected on both sides of the rotating block, the threaded rods are threadedly connected to the upper plate, and the threaded rods are threadedly connected to the lower plate.

[0006] By adopting the above technical solution, the concave plate is initially clamped with the upper end of the shell. When it is necessary to support the shell, the concave plate is rotated around the fixed axis. When the concave plate is rotated to the bottom of the shell, the adjusting motor is started to drive the output shaft to rotate. Since the square rod can only move along its own length direction in the square groove, the square rod will move along its own length direction as the output shaft rotates. After the square rod moves to the outside of the concave plate, the square rod will be able to support the shell. In addition, as the square rod moves, the square rod can adjust the height of the shell. Then move multiple concave plates until the positioning block is above the valve stem. Use the pre-fixing device to make the positioning block and the valve stem in the same vertical plane. Then start the output shaft of the adjusting motor to rotate in the opposite direction. The square rod will move in the direction of the concave plate until the valve stem is inserted into the slot in the positioning block. The pre-fixing device can guide the movement, allowing the valve stem to be inserted into the slot. When the length of the concave plate needs to be adjusted, the rotating block is rotated around its own axis to drive the threaded rod to rotate. As the threaded rod rotates, the upper plate and the lower plate will move toward or away from each other.

[0007] The present invention is further configured as follows: two vertical grooves are provided on the side of the positioning block, the positioning block is provided with a sliding groove which is connected to the vertical groove and is located at the bottom of the vertical groove, the pre-fixing device includes a sliding rod which can move along the length direction of the sliding groove, the sliding rod is connected to a fixing plate located outside the positioning block, and a fastener is provided on the side of the fixing plate.

[0008] By adopting the above technical solution, the fixed plate on the outside is moved, and the fixed plate will drive the sliding rod to move along the length direction of the sliding groove. When the fixed plate moves to the outside of the valve stem, the two fixed plates are rotated in the direction of approaching each other using fasteners until the two fixed plates are away from one end of the positioning block to squeeze the valve stem. Under the action of the two fixed plates, after the positioning block and the valve stem are close to each other, the valve stem can be stably inserted into the slot.

[0009] The present invention is further configured as follows: the fastener includes a fastening block fixedly connected to one of the fixing plates, the fastening block is rotatably connected to an arc-shaped plate, the other fixing plate is fixedly connected to a clamping block for clamping one end of the arc-shaped plate, and one side of the clamping block is threadedly connected to a fastening bolt.

[0010] By adopting the above technical solution, the arc plate is rotated around the connection between the arc plate and the fastening block. When the arc plate is rotated to the clamping block, the arc plate is passed through the clamping block until the two fixed plates are away from the end of the positioning block to squeeze the valve stem, and then the fastening bolt is rotated to squeeze the arc plate.

[0011] The present invention is further configured as follows: the positioning block is provided with an adjustment groove below the vertical groove, a spring is provided at the bottom of the adjustment groove, the other end of the spring is connected to an adjustment ball, and the fixing plate is located outside the adjustment ball.

[0012] By adopting the above technical solution, the setting of the adjusting ball allows the fixing plate and the shell to form a certain angle. As the fixing plate moves, the two fixing plates move away from each other. When the two fixing plates move to the circumference of the valve stem, fasteners are used to rotate the two fixing plates toward each other. During this process, the fixing plate will squeeze the adjusting ball and move the adjusting ball toward the bottom of the adjusting groove. In addition, the fixing plate will bend until the end of the fixing plate away from the shell is squeezed against the valve stem by the fastener.

[0013] The present invention is further configured as follows: a blocking cylinder is fixedly connected in the adjusting groove, the blocking cylinder is connected to a blocking plate, and the blocking plates are located on both sides of the adjusting ball.

[0014] By adopting the above technical solution, the function of the adjusting ball is to adjust the angle between the fixed plate and the positioning block, that is, when the adjusting ball moves outward a little, the angle between the fixed plate and the positioning block will become larger. When the adjusting ball does not need to move, the blocking cylinder can be used to prevent the blocking plate from moving. When the adjusting ball needs to move, the blocking plate needs to move synchronously with the adjusting ball.

[0015] The present invention is further configured as follows: the shell is provided with an annular groove connected to the slot, the annular groove is located in the circumference of the slot, an arc-shaped steel bar is arranged in the annular groove, and a part of the steel bar is located in the slot.

[0016] By adopting the above technical solution, when the valve stem is inserted into the slot, the valve stem will squeeze the steel bar. When the valve stem passes through the steel bar, the steel bar will squeeze the valve stem between the two steel bars due to its own restoring effect, thereby enhancing the connection strength between the valve stem and the slot.

[0017] The present invention is further configured as follows: a placement block is provided on one side of the fixing plates facing each other, the placement block is threadedly connected with an adjusting bolt, and a stabilizing plate is integrally connected to one side of the adjusting bolts facing each other.

[0018] By adopting the above technical solution, after the fixed plate is squeezed and bent by the arc-shaped plate, the fixed plate will become concave. At this time, the adjusting bolt can be rotated to allow the adjusting bolt to drive the stabilizing plate to move, so that the two stabilizing plates move toward each other until the two stabilizing plates are squeezed against the valve stem located between the two stabilizing plates.

[0019] In summary, the present invention has the following beneficial effects:

[0020] The concave plate is initially connected to the upper end of the shell. When it is necessary to support the shell, the concave plate is rotated around the fixed axis. When the concave plate is rotated to the bottom of the shell, the adjusting motor is started to drive the output shaft to rotate. Since the square rod can only move along its own length in the square groove, the square rod will move along its own length as the output shaft rotates. After the square rod moves to the outside of the concave plate, the square rod will be able to support the shell. In addition, as the square rod moves, the square rod can adjust the height of the shell. Then move multiple concave plates until the positioning block is above the valve stem. Use the pre-fixing device to make the positioning block and the valve stem in the same vertical plane. Then start the output shaft of the adjusting motor to rotate in the opposite direction. The square rod will move in the direction of the concave plate until the valve stem is inserted into the slot in the positioning block. The pre-fixing device can play a guiding role in movement, so that the valve stem can be inserted into the slot. When the length of the concave plate needs to be adjusted, the rotating block is rotated around its own axis to drive the threaded rod to rotate. As the threaded rod rotates, the upper plate and the lower plate will move in the direction of approaching or moving away from each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a front view of the housing in the embodiment;

[0022] Figure 2 is a schematic structural diagram of a housing in an embodiment;

[0023] Figure 3 It is a structural schematic diagram of the connection relationship between the housing, the rotating groove, the fixed shaft, the concave plate, the fixed block, the adjustment motor, the square rod and the square groove in the embodiment;

[0024] Figure 4 Schematic diagram of the internal structure of the housing and the positioning block in the embodiment;

[0025] Figure 5 It is a structural schematic diagram of the connection relationship between the positioning block and the vertical groove in the embodiment;

[0026] Figure 6 The fixing plate, the fastening block, the arc-shaped plate, the clamping block, and the fastening bolts in the embodiment;

[0027] Figure 7 It is a structural schematic diagram of the connection relationship between the arc plate, the fixing plate, the placement block, the adjustment bolts and the stabilizing plate in the embodiment.

[0028] 1. Housing; 2. Slot; 3. Rotating slot; 4. Fixed shaft; 5. Concave plate; 6. Fixed block; 7. Adjusting motor; 8. Square rod; 9. Square slot; 10. Positioning block; 11. Vertical slot; 12. Sliding slot; 13. Sliding rod; 14. Fixed plate; 15. Fastening block; 16. Arc plate; 17. Clamping block; 18. Fastening bolt; 19. Adjusting slot; 20. Spring; 21. Adjusting ball; 22. Blocking cylinder; 23. Blocking plate; 24. Annular groove; 25. Steel bar; 26. Upper plate; 27. Lower plate; 28. Rotating block; 29. ​​Threaded rod; 30. Placement block; 31. Adjusting bolt; 32. Stabilizing plate. DETAILED DESCRIPTION

[0029] The present invention will be further described with reference to the accompanying drawings.

[0030] Valve electric actuators, such as Figure 1-Figure 7 As shown, it includes a housing 1, the housing 1 is provided with a slot 2 for inserting a valve stem, a rotating slot 3 is provided below the housing 1, a fixed shaft 4 is fixedly connected in the rotating slot 3, the fixed shaft 4 is sleeved with a supporting device, the supporting device includes a concave plate 5 rotatably connected to the fixed shaft 4, a fixed block 6 fixedly connected to the concave plate 5 is provided at the bottom of the concave plate 5, an adjusting motor 7 is fixedly connected to one side of the fixed block 6, the output shaft of the adjusting motor 7 is threadedly connected to a square rod 8 in the fixed block 6, the fixed block 6 is provided with a square slot 9 for accommodating the square rod 8, the housing 1 includes a positioning block 10 in the circumference of the slot 2, and a pre-fixing device is slidably connected to the side of the positioning block 10. The concave plate 5 includes an upper plate 26 and a lower plate 27, a rotating block 28 is provided between the upper plate 26 and the lower plate 27, and threaded rods 29 are fixedly connected to both sides of the rotating block 28, the threaded rod 29 is threadedly connected to the upper plate 26, and the threaded rod 29 is threadedly connected to the lower plate 27.

[0031] Two vertical grooves 11 are arranged on the side of the positioning block 10, and the positioning block 10 is provided with a sliding groove 12 which is connected with the vertical groove 11 and is located at the bottom of the vertical groove 11. The pre-fixing device includes a sliding rod 13 which can move along the length direction of the sliding groove 12, and the sliding rod 13 is connected to a fixing plate 14 which is located outside the positioning block 10, and a fastener is arranged on the side of the fixing plate 14.

[0032] The fastener includes a fastening block 15 fixedly connected to one of the fixing plates 14, the fastening block 15 is rotatably connected to an arc-shaped plate 16, and the other fixing plate 14 is fixedly connected to a clamping block 17 for clamping one end of the arc-shaped plate 16, and one side of the clamping block 17 is threadedly connected to a fastening bolt 18.

[0033] The positioning block 10 is provided with an adjustment slot 19 below the vertical slot 11 . A spring 20 is provided at the bottom of the adjustment slot 19 . The other end of the spring 20 is connected to an adjustment ball 21 . The fixing plate 14 is located outside the adjustment ball 21 .

[0034] A blocking cylinder 22 is fixedly connected in the adjusting groove 19 , and a blocking plate 23 is connected to the blocking cylinder 22 . The blocking plates 23 are located on both sides of the adjusting ball 21 .

[0035] The housing 1 is provided with an annular groove 24 communicating with the slot 2 . The annular groove 24 is located in the circumference of the slot 2 . An arc-shaped steel bar 25 is provided in the annular groove 24 . A part of the steel bar 25 is located in the slot 2 .

[0036] A placement block 30 is disposed on one side of the fixing plate 14 facing each other. An adjusting bolt 31 is threadedly connected to the placement block 30. A stabilizing plate 32 is integrally connected to one side of the adjusting bolt 31 facing each other.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A valve electric actuator, comprising a housing (1), wherein the housing (1) is provided with a slot (2) for inserting a valve stem, characterized in that: A rotating groove (3) is provided below the housing (1), a fixed shaft (4) is fixedly connected in the rotating groove (3), a supporting device is sleeved on the fixed shaft (4), and the supporting device comprises a concave plate (5) rotatably connected to the fixed shaft (4), a fixed block (6) fixedly connected to the concave plate (5) is provided at the bottom of the concave plate (5), an adjusting motor (7) is fixedly connected to one side of the fixing block (6), an output shaft of the adjusting motor (7) is threadedly connected to a square rod (8) in the fixing block (6), and the fixing The block (6) is provided with a square groove (9) for accommodating a square rod (8); the housing (1) includes a positioning block (10) located in the circumferential direction of the slot (2); the side of the positioning block (10) is slidably connected with a pre-fixing device; the concave plate (5) includes an upper plate (26) and a lower plate (27); a rotating block (28) is provided between the upper plate (26) and the lower plate (27); both sides of the rotating block (28) are fixedly connected with threaded rods (29); the threaded rods (29) are threadedly connected to the upper plate (26 ... 9) is threadedly connected to the lower plate (27), the side of the positioning block (10) is provided with two vertical grooves (11), the positioning block (10) is provided with a sliding groove (12) which is connected to the vertical groove (11) and is located at the bottom of the vertical groove (11), the pre-fixing device includes a sliding rod (13) which can move along the length direction of the sliding groove (12), the sliding rod (13) is connected to a fixing plate (14) located outside the shell (1), the side of the positioning block (10) is provided with a fastener, and the fixing plate (14) is provided with a side facing each other. A placement block (30), wherein the placement block (30) is threadedly connected with an adjusting bolt (31), and the adjusting bolt (31) is integrally connected with a stabilizing plate (32) on one side facing each other; the fastener comprises a fastening block (15) fixedly connected to one of the fixing plates (14), wherein the fastening block (15) is rotatably connected with an arc-shaped plate (16), and the other fixing plate (14) is fixedly connected with a clamping block (17) for clamping one end of the arc-shaped plate (16), and one side of the clamping block (17) is threadedly connected with a fastening bolt (18).

2. The valve electric actuator according to claim 1, characterized in that: The positioning block (10) is provided with an adjustment groove (19) located below the vertical groove (11); a spring (20) is provided at the bottom of the adjustment groove (19); the other end of the spring (20) is connected to an adjustment ball (21); and the fixing plate (14) is located outside the adjustment ball (21).

3. The electric valve actuator according to claim 2, characterized in that: A blocking cylinder (22) is fixedly connected in the adjusting groove (19), and the blocking cylinder (22) is connected to a blocking plate (23), and the blocking plate (23) is located on both sides of the adjusting ball (21).

4. The electric valve actuator according to claim 1, characterized in that: The housing (1) is provided with an annular groove (24) connected to the slot (2), the annular groove (24) is located in the circumference of the slot (2), an arc-shaped steel bar (25) is arranged in the annular groove (24), and a part of the steel bar (25) is located in the slot (2).

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