Angular stroke actuator and valve stem connection structure

Abstract

This utility model discloses a connection structure between an angular stroke actuator and a valve stem, including an actuator body and a valve. The actuator body includes an output shaft located at the bottom, and a valve stem is inserted into the valve. A mounting cover is fixedly connected to the bottom outer wall of the actuator body, and a connecting bracket is fixedly connected to the bottom of the mounting cover. A connector is sleeved between the output shaft and the valve stem. The inner wall of the connector has a hexagonal locking hole, and the top of the valve stem engages with the hexagonal locking hole. A locking crossbeam is fixedly connected between the inner walls of the two sides of the connector. This utility model uses the locking crossbeam to engage with the locking groove, and then inserts two positioning pins into the output shaft and the valve stem respectively, so that the two positioning pins engage with the first positioning groove and the second positioning groove respectively. Finally, two limiting blocks clamp the connector on both sides, thereby providing a stable connection between the output shaft of the actuator body and the valve stem, improving the stability of the connection between the angular stroke actuator and the valve stem.

Description

Technical Field

[0001] This utility model relates to the field of angular stroke actuator installation technology, and in particular to a connection structure between an angular stroke actuator and a valve stem. Background Technology

[0002] An angular stroke actuator is an electric device used to control the opening and closing of valves from 0 to 90 degrees. It consists of a servo amplifier and an actuator, and now adopts an electromechanical integrated intelligent structure. It mainly operates angular stroke valves such as ball valves, butterfly valves, and plug valves, and is widely used in industries such as petroleum, chemical, power, and metallurgy.

[0003] Currently, existing rotary actuators are often connected to valve stems using connectors. However, over time, friction between the connector and the valve stem or the output shaft of the rotary actuator can create gaps, leading to a decrease in torque transmission efficiency. If the actuator output shaft and the valve stem axis are not concentric, local stress concentration can occur, accelerating wear and even causing breakage. Therefore, in order to improve the stability of the connection between the rotary actuator and the valve stem, and to promote technological advancement in the industry and enhance core technological competitiveness, this application proposes a new implementation scheme that differs from the existing rotary actuator and valve stem connection structure and application method. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an apparatus to solve one or more problems in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A rotary actuator and valve stem connection structure includes an actuator body and a valve. The actuator body includes an output shaft located at the bottom. A valve stem is inserted into the valve. A mounting cover is fixedly connected to the bottom outer wall of the actuator body. A connecting bracket is fixedly connected to the bottom of the mounting cover. A connector is sleeved between the output shaft and the valve stem. The inner wall of the connector has a hexagonal locking hole. The top of the valve stem engages with the hexagonal locking hole. A locking beam is fixedly connected between the inner walls of the two sides of the connector. The bottom of the output shaft has a locking groove. The locking beam engages with the locking groove. Limiting blocks are provided on both inner walls of the connecting bracket. The connector is clamped between the two limiting blocks. Multiple balls are rotatably embedded on one side of the limiting block. A fastening bolt is threadedly connected to one side of the limiting block. Adjusting grooves are provided on both sides of the connecting bracket. The fastening bolt slides within the adjusting grooves.

[0006] Furthermore, the connector has a first positioning groove at the top and a second positioning groove at the bottom.

[0007] Furthermore, locating pins are inserted between the two sides of the output shaft and between the two sides of the valve stem, and the two locating pins are respectively engaged with the first locating groove and the second locating groove.

[0008] Furthermore, the limiting block has a fan-shaped structure.

[0009] Furthermore, the outer wall of the connecting bracket is provided with anti-slip grooves, and the fastening bolts are in contact with the anti-slip grooves.

[0010] Furthermore, flanges are fixedly connected to both the bottom of the connecting bracket and the top of the valve, and the two flanges are fixed together by bolts.

[0011] Furthermore, sealing rings are snapped onto both sides of the valve.

[0012] Compared with the prior art, the beneficial technical effects of this utility model are as follows: 1. The crossbeam is snapped into the slot, and two locating pins are inserted into the output shaft and valve stem respectively, so that the two locating pins are snapped into the first locating groove and the second locating groove respectively. Then, two limit blocks are clamped on both sides of the connector, thereby making a stable connection between the output shaft of the actuator body and the valve stem, and improving the stability of the connection between the angular stroke actuator and the valve stem.

[0013] 2. The use of limit blocks and ball bearings allows the connector to rotate freely within the connecting bracket while maintaining a limited position, making it convenient and quick to use. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the connection structure between the angular stroke actuator and the valve stem proposed in this utility model; Figure 2 This is a three-dimensional structural diagram illustrating the connection state of the angular stroke actuator and valve stem connection structure proposed in this utility model; Figure 3 This is a top view of the connector structure for the connection between the angular stroke actuator and the valve stem proposed in this utility model; Figure 4 This is a bottom view of the connector structure for the connection between the angular stroke actuator and the valve stem proposed in this utility model; Figure 5 This is a cross-sectional view of the connection structure of the angular stroke actuator and valve stem proposed in this utility model.

[0015] The following are labels in the attached diagram: 1. Actuator body; 2. Mounting cover; 3. Connecting bracket; 4. Flange; 5. Valve; 6. Valve stem; 7. Connector; 8. Hexagonal snap hole; 9. Snap-fit ​​beam; 10. Output shaft; 11. Slot; 12. Positioning pin; 13. First positioning slot; 14. Second positioning slot; 15. Limit block; 16. Ball bearing; 17. Adjusting slide; 18. Fastening bolt; 19. Anti-slip groove. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the device proposed by this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, only used to conveniently and clearly assist in illustrating the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0017] Reference Figures 1-5 An angular stroke actuator and valve stem connection structure includes an actuator body 1 and a valve 5. The actuator body 1 can be selected as ZKJ-25. The actuator body 1 includes an output shaft 10 located at the bottom. The bottom outer wall of the actuator body 1 is fixed with a mounting cover 2 by bolts. The bottom of the mounting cover 2 is fixed with a connecting bracket 3 by bolts. The output shaft 10 passes through the mounting cover 2. A valve stem 6 is rotatably installed inside the valve 5. A connector 7 is sleeved between the output shaft 10 and the valve stem 6. The inner wall of the connector 7 is provided with a hexagonal locking hole 8. The top of the valve stem 6 is engaged with the hexagonal locking hole 8. The connector 7 has an integrally formed snap-fit ​​beam 9 between the inner walls on both sides, and the bottom of the output shaft 10 is provided with a snap-fit ​​groove 11. The snap-fit ​​beam 9 snaps into the snap-fit ​​groove 11, and snaps into the valve stem 6 through the internal hexagonal snap-fit ​​hole 8. At the same time, the snap-fit ​​beam 9 snaps into the snap-fit ​​groove 11 of the output shaft 10 to ensure the stability of the connection and dynamic positioning. Limiting blocks 15 are provided on both inner walls of the connecting bracket 3. The connector 7 is clamped between the two limiting blocks 15. Multiple balls 16 are rotatably embedded on one side of the limiting block 15. The design of the limiting block 15 and the balls 16 allows the connector 7 to rotate freely within the connecting bracket 3 while maintaining a limited position. One side of the limiting block 15 is threaded with a fastening bolt 18. Both sides of the connecting bracket 3 are provided with adjusting grooves 17. The fastening bolt 18 slides in the adjusting grooves 17. Tightening the fastening bolt 18 fixes the limiting block 15, thereby limiting and fixing the connector 7, and further improving the stability of the connection between the output shaft 10 of the actuator body 1 and the valve stem 6.

[0018] The connector 7 has a first positioning groove 13 at the top and a second positioning groove 14 at the bottom. Positioning pins 12 are inserted between the two sides of the output shaft 10 and between the two sides of the valve stem 6. The two positioning pins 12 are arranged in a cross shape and are respectively engaged with the first positioning groove 13 and the second positioning groove 14, thereby facilitating a stable connection between the output shaft 10 of the actuator body 1 and the valve stem 6.

[0019] Limiting block 15 has a fan-shaped structure.

[0020] The outer wall of the connecting bracket 3 is provided with an anti-slip groove 19. The fastening bolt 18 contacts the anti-slip groove 19, thereby increasing the friction between the fastening bolt 18 and the anti-slip groove 19, and thus preventing the fastening bolt 18 from loosening.

[0021] Flanges 4 are welded to the bottom of the connecting bracket 3 and the top of the valve 5. The two flanges 4 are fixed together by bolts, which facilitates the connection and fixation of the actuator body 1 and the valve 5.

[0022] Both sides of valve 5 are fitted with sealing rings.

[0023] The working principle of this embodiment is as follows: In use, firstly, the connector 7 is fitted onto the top of the valve stem 6, and the top of the valve stem 6 is engaged with the hexagonal locking hole 8. Then, the output shaft 10 of the actuator body 1 is inserted into the top of the connector 7, and the locking beam 9 is engaged with the locking groove 11. Then, two positioning pins 12 are inserted into the output shaft 10 and the valve stem 6 respectively, and the two positioning pins 12 are engaged with the first positioning groove 13 and the second positioning groove 14 respectively, thereby facilitating a stable connection between the output shaft 10 of the actuator body 1 and the valve stem 6. Then, the limiting block 15 is pulled to move the fastening bolt 18 within the adjusting groove 17, so that the two limiting blocks 15 are clamped on both sides of the connector 7. The fastening bolt 18 is then tightened to fix the limiting block 15, thereby limiting and fixing the connector 7, which further improves the stability of the connection between the output shaft 10 of the actuator body 1 and the valve stem 6. The design of the ball bearing 16 facilitates the rotation of the connector 7.

[0024] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0025] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A rotary actuator and valve stem connection structure, comprising an actuator body (1) and a valve (5), wherein the actuator body (1) includes an output shaft (10) disposed below, and a valve stem (6) is inserted into the valve (5), characterized in that, A mounting cover (2) is fixedly connected to the bottom outer wall of the actuator body (1), and a connecting bracket (3) is fixedly connected to the bottom of the mounting cover (2). A connector (7) is sleeved between the output shaft (10) and the valve stem (6). The inner wall of the connector (7) is provided with a hexagonal locking hole (8). The top of the valve stem (6) is engaged with the hexagonal locking hole (8). A locking crossbeam (9) is fixedly connected between the inner walls of the two sides of the connector (7). A locking groove (1) is provided at the bottom of the output shaft (10). 1) The crossbeam (9) is snapped into the slot (11). The inner walls of both sides of the connecting bracket (3) are provided with limiting blocks (15). The connector (7) is clamped between the two limiting blocks (15). One side of the limiting block (15) is rotatably embedded with multiple balls (16). One side of the limiting block (15) is threaded with a fastening bolt (18). Both sides of the connecting bracket (3) are provided with adjusting grooves (17). The fastening bolt (18) slides in the adjusting grooves (17).

2. A rotary actuator to stem connection according to claim 1, wherein, The connector (7) has a first positioning groove (13) at the top and a second positioning groove (14) at the bottom.

3. A rotary actuator to valve stem connection according to claim 2, wherein, Positioning pins (12) are inserted between the two sides of the output shaft (10) and between the two sides of the valve stem (6), and the two positioning pins (12) are respectively engaged with the first positioning groove (13) and the second positioning groove (14).

4. A rotary actuator to stem connection according to claim 1, wherein: The limiting block (15) has a fan-shaped structure.

5. A rotary actuator to stem connection according to claim 1 wherein, The outer wall of the connecting bracket (3) is provided with anti-slip groove (19), and the fastening bolt (18) contacts the anti-slip groove (19).

6. A rotary actuator to stem connection according to claim 1 wherein, The bottom of the connecting bracket (3) and the top of the valve (5) are both fixedly connected to flanges (4), and the two flanges (4) are fixed together by bolts.

7. A rotary actuator to stem connection according to claim 1 wherein, Both sides of the valve (5) are fitted with sealing rings.

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