Multi-rotation intelligent electric actuating mechanism

Abstract

The utility model relates to the technical field of electric actuating mechanisms, in particular to a multi-turn intelligent electric actuating mechanism. Comprising a screw cap fixed on the surface of a screw rod, a nut sleeved on the outer surface of the screw rod, an annular block fixed on the surface of the nut, an annular groove formed in the surface of a moving ring, a positioning rod fixed on the inner wall of the annular groove, a gear sleeved on the outer surface of the positioning rod, a guide rod fixed on the surface of the gear, and a spring sleeved on the outer surface of the guide rod. The valve actuating mechanism has the beneficial effects that the nut is rotated to move along the axis of the screw, the nut moves to drive the moving ring to move along the screw, the moving ring cannot rotate, when the nut fixes the actuating mechanism body and the valve pipeline, pulling of the fixing ring is stopped, and the spring resets to abut against the gear to move and enable the gear to be clamped with the gear block again. The movable ring and the nut are limited again, the annular block is limited by the gear and cannot rotate, and therefore the nut cannot rotate on the screw rod, and looseness prevention of the nut is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric actuators, in particular to a multi-turn intelligent electric actuator. Background Art

[0002] A multi-turn electric actuator is a type of electric actuator specifically designed to drive multi-turn valves and is suitable for driving gate valves, globe valves, regulating valves, and similar applications.

[0003] In the prior art, with the development of power automation technology, multi-turn electric actuators are widely used in fields such as petroleum, chemical industry, electric power, metallurgy, energy, pharmaceuticals, papermaking, water treatment, food, brewing, ships, and building automation.

[0004] However, most multi-turn actuators and valves are connected and fixed by flanges and bolts. Due to the long-term impact of fluid on the valve, vibrations will occur at the connection between the actuator and the valve, and the nuts are prone to loosen on the bolts, affecting the connection effect between the actuator and the valve. Content of the Utility Model

[0005] The purpose of the utility model is to provide a multi-turn intelligent electric actuator to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A multi-turn intelligent electric actuator, the multi-turn intelligent electric actuator includes:

[0007] An actuator main body, a valve pipeline is provided at the end of the actuator main body, a screw rod is inserted through the connection between the actuator main body and the valve pipeline, a nut is fixed on the surface of the screw rod, a nut is sleeved on the outer surface of the screw rod, and an annular block is fixed on the surface of the nut;

[0008] A moving ring, an annular groove is provided on the surface of the moving ring, a positioning rod is fixed on the inner wall of the annular groove, a gear is sleeved on the outer surface of the positioning rod, a guide rod is fixed on the surface of the gear, and a spring is sleeved on the outer surface of the guide rod.

[0009] Preferably, a positioning groove is provided on the outer surface of the screw rod, a connecting ring is fixed on the surface of the nut, an annular block is fixed at the end of the connecting ring, and tooth blocks are provided on the outer surface of the annular block.

[0010] Preferably, a connecting groove is provided on the surface of the moving ring, an annular groove is provided on the inner wall of the connecting groove, the connecting ring corresponds to the connecting groove and is clamped, showing a movable connection, and the annular block is located inside the annular groove.

[0011] Preferably, a fixing ring is fixed to the end of the guide rod, a connecting hole is formed on the surface of the moving ring, and the guide rod corresponds to the connecting hole and is clamped therein, forming a movable connection.

[0012] Preferably, the fixing ring is located outside the moving ring, the guide rod is located inside the annular groove, the gear corresponds to the tooth block, and a positioning hole is formed at the end of the gear.

[0013] Preferably, the positioning rod corresponds to the positioning hole and is clamped therein, and the two are in movable connection. The thickness of the gear is the same as that of the annular block.

[0014] Preferably, a through hole is formed on the surface of the moving ring, a positioning block is fixed to the inner wall of the through hole, and the positioning block corresponds to the positioning groove and is clamped therein, forming a movable connection.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] Pull the fixing ring, and drive the gear to move along the axial direction of the positioning rod through the guide rod, so that the gear is no longer clamped with the tooth block, and the limit between the nut and the moving ring disappears. Rotating the nut will make it move along the axial direction of the screw rod. The movement of the nut will drive the moving ring to move along the screw rod, and the moving ring will not rotate. When the nut fixes the actuator body and the valve pipeline, stop pulling the fixing ring. The spring will reset and push the gear to move and make it engage with the tooth block again, forming a limit between the moving ring and the nut again. The annular block is restricted by the gear and cannot rotate, so that the nut cannot rotate on the screw rod, realizing the anti-loosening of the nut and preventing the instability of the connection between the actuator body and the valve pipeline due to fluid impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a three-dimensional schematic diagram of the bolt assembly structure of the present utility model;

[0019] Figure 3 is a sectional three-dimensional schematic diagram of the nut structure of the present utility model;

[0020] Figure 4 is an exploded three-dimensional schematic diagram of the moving ring assembly structure of the present utility model;

[0021] Figure 5 is a sectional three-dimensional schematic diagram of the moving ring structure of the present utility model;

[0022] Figure 6 is a three-dimensional schematic diagram of the fixing ring assembly structure of the present utility model.

[0023] In the figure: 1. Actuator body; 2. Nut; 3. Valve pipeline; 4. Screw rod; 5. Positioning groove; 6. Nut; 7. Moving ring; 8. Tooth block; 9. Ring block; 10. Connecting ring; 11. Positioning block; 12. Through hole; 13. Gear; 14. Fixed ring; 15. Spring; 16. Connecting hole; 17. Positioning rod; 18. Connecting groove; 19. Annular groove; 20. Guide rod; 21. Positioning hole. Detailed implementation manners

[0024] In order to clearly and completely describe the purpose, technical solution of the present utility model and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0025] Please refer to Figures 1 to 6 , the present utility model provides a technical solution: a multi-turn intelligent electric actuator.

[0026] In the first embodiment, a valve pipeline 3 is provided at the end of the actuator body 1. A screw rod 4 is inserted through the connection between the actuator body 1 and the valve pipeline 3. A nut 2 is fixed on the surface of the screw rod 4. A nut 6 is sleeved on the outer surface of the screw rod 4. A ring block 9 is fixed on the surface of the nut 6. Since the moving ring 7 cannot rotate, the ring block 9 is restricted by the gear 13 and cannot rotate, so that the nut 6 cannot rotate on the screw rod 4, realizing the anti-loosening of the nut 6.

[0027] An annular groove 19 is formed on the surface of the moving ring 7. A positioning rod 17 is fixed on the inner wall of the annular groove 19. A gear 13 is sleeved on the outer surface of the positioning rod 17. The gear 13 is engaged with the tooth block 8, forming a limit between the moving ring 7 and the nut 6. A guide rod 20 is fixed on the surface of the gear 13. A spring 15 is sleeved on the outer surface of the guide rod 20. Due to the elasticity of the spring 15, when the spring 15 resets, it will push the gear 13 to move and make it engage with the tooth block 8 again, re-forming a limit between the moving ring 7 and the nut 6.

[0028] On the basis of the first embodiment, in order to realize the anti-loosening of the nut 6, a positioning groove 5 is formed on the outer surface of the screw rod 4. A connecting ring 10 is fixed on the surface of the nut 6. A ring block 9 is fixed at the end of the connecting ring 10. Tooth blocks 8 are formed on the outer surface of the ring block 9.

[0029] The surface of the moving ring 7 is provided with a connecting groove 18, and the inner wall of the connecting groove 18 is provided with an annular groove 19. The connecting ring 10 corresponds to the connecting groove 18 and is clamped therein. The annular block 10 positions the moving ring 7, preventing the moving block 7 from detaching from the nut 6, and they are in a movable connection. The annular block 9 is located inside the annular groove 19.

[0030] A fixing ring 14 is fixed at the end of the guide rod 20. The surface of the moving ring 7 is provided with a connecting hole 16. The guide rod 20 corresponds to the connecting hole 16 and is clamped therein, being in a movable connection.

[0031] The fixing ring 14 is located outside the moving ring 7. The guide rod 20 is located inside the annular groove 19. The gear 13 corresponds to the tooth block 8, and a positioning hole 21 is provided at the end of the gear 13.

[0032] The positioning rod 17 corresponds to the positioning hole 21 and is clamped therein, and the two are in a movable connection, positioning the movement of the guide rod 20 on the positioning rod 17 and preventing the guide rod 20 from shifting. The thickness of the gear 13 is the same as that of the annular block 9.

[0033] The surface of the moving ring 7 is provided with a through hole 12, and a positioning block 11 is fixed on the inner wall of the through hole 12. The positioning block 11 corresponds to the positioning groove 5 and is clamped therein. Due to the cooperation between the positioning block 11 and the positioning groove 5, the moving ring 7 will not rotate and is in a movable connection.

[0034] During actual use, when connecting the actuator main body 1 and the valve pipeline 3, first insert the screw rod 4 through the connecting flanges of the two, then clamp the nut 6 on the screw rod 4, and at the same time align the positioning block 11 with the positioning groove 5. At this time, pull the fixing ring 14 to drive the gear 13 to move along the axial direction of the positioning rod 17 through the guide rod 20, so that the gear 13 is no longer clamped with the tooth block 8, and the limit between the nut 6 and the moving ring 7 disappears. Due to the thread fit, rotating the nut 6 will cause it to move along the axial direction of the screw rod 4. The movement of the nut 6 will drive the moving ring 7 to move along the screw rod 4. And due to the cooperation between the positioning block 11 and the positioning groove 5, the moving ring 7 will not rotate. When the nut 6 fixes the actuator main body 1 and the valve pipeline 3, stop pulling the fixing ring 14. Due to the elasticity of the spring 15, the spring 15 will reset and push the gear 13 to move and make it engage with the tooth block 8 again, forming a limit between the moving ring 7 and the nut 6 again. Since the moving ring 7 cannot rotate, the annular block 9 is restricted by the gear 13 and cannot rotate, thus preventing the nut 6 from rotating on the screw rod 4, achieving the anti-loosening of the nut 6 and preventing the instability of the connection between the actuator main body 1 and the valve pipeline 3 due to fluid impact.

[0035] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-turn intelligent electric actuator, characterized in that: The multi-turn intelligent electric actuator comprises: An actuator body (1), a valve pipe (3) is provided at the end of the actuator body (1), a screw (4) is inserted into the connection between the actuator body (1) and the valve pipe (3), a nut (2) is fixed on the surface of the screw (4), a nut (6) is sleeved on the outer surface of the screw (4), and an annular block (9) is fixed on the surface of the nut (6); A movable ring (7) is provided with an annular groove (19) on its surface, a positioning rod (17) is fixed on the inner wall of the annular groove (19), a gear (13) is sleeved on the outer surface of the positioning rod (17), a guide rod (20) is fixed on the surface of the gear (13), and a spring (15) is sleeved on the outer surface of the guide rod (20).

2. A multi-turn intelligent electric actuator according to claim 1, characterized in that: The outer surface of the screw rod (4) is provided with a positioning groove (5), the surface of the nut (6) is fixed with a connecting ring (10), the end of the connecting ring (10) is fixed with an annular block (9), and the outer surface of the annular block (9) is provided with a tooth block (8).

3. A multi-turn intelligent electric actuator according to claim 2, characterized in that: The movable ring (7) has a connection groove (18) on its surface, and an annular groove (19) is formed on the inner wall of the connection groove (18). The connection ring (10) corresponds to and is clamped with the connection groove (18) to form a movable connection. The annular block (9) is located inside the annular groove (19).

4. A multi-turn intelligent electric actuator according to claim 3, characterized in that: A fixed ring (14) is fixed to the end of the guide rod (20), a connecting hole (16) is opened on the surface of the movable ring (7), and the guide rod (20) corresponds to and is clamped with the connecting hole (16) to form a movably connected connection.

5. The multi-turn intelligent electric actuator according to claim 4, characterized in that: The fixed ring (14) is located outside the movable ring (7), the guide rod (20) is located inside the annular groove (19), the gear (13) corresponds to the gear block (8), and a positioning hole (21) is provided at the end of the gear (13).

6. The multi-turn intelligent electric actuator according to claim 5, characterized in that: The positioning rod (17) corresponds to and is locked with the positioning hole (21), and the two are movably connected. The thickness of the gear (13) is the same as the thickness of the annular block (9).

7. The multi-turn intelligent electric actuator according to claim 6, characterized in that: A through hole (12) is provided on the surface of the movable ring (7), a positioning block (11) is fixed on the inner wall of the through hole (12), and the positioning block (11) corresponds to and is clamped in the positioning groove (5) to be movably connected.

Images