Connecting assembly for connecting actuator output shaft connecting rod and regulating valve rod

Abstract

The utility model discloses a connecting assembly used for connecting an actuator output shaft connecting rod and a regulating valve rod, which comprises an actuator output shaft connecting piece, a regulating valve rod connecting piece is arranged below the actuator output shaft connecting piece, a groove is arranged on the upper surface of the regulating valve rod connecting piece, and the regulating valve rod connecting piece is connected with the actuator output shaft connecting piece. And the convex end of the actuator output shaft connecting piece extends into the groove. The convex end of the actuator output shaft connecting piece extends into the groove and can be matched with a regulating valve rod connecting piece to increase the bearing performance on high torque, the actuator and the regulating valve can be effectively prevented from falling off in the using process, and the direction pin, the first through opening and the second through opening are matched to prevent the actuator from falling off. The device is simple in structure, the actuator output shaft connecting piece is limited, separation is prevented, the square pin can be positioned in cooperation with the spring chuck, the square pin is prevented from falling off, and the device has the advantages of being tight, reliable and convenient to disassemble, improving the working efficiency and reducing the labor intensity.

Description

Technical Field

[0001] The utility model relates to the technical field of actuators, in particular to a connecting component for connecting the output shaft connecting rod of an actuator and the valve stem of a regulating valve. Background Technique

[0002] At present, there are basically two ways to connect the output shaft connecting rod of an actuator and the valve stem of a regulating valve. One is to use a split nut to clamp the output shaft connecting rod of the actuator and the valve stem of the regulating valve together. For high-torque actuators, this method is likely to cause the output shaft connecting rod of the actuator to become disengaged from the valve stem of the regulating valve. The other is to use a nut to connect the output shaft connecting rod of the actuator and the valve stem of the regulating valve. The disadvantage of this method is that it is very inconvenient during the process of connecting and disconnecting the output shaft connecting rod of the actuator and the valve stem of the regulating valve, and it is necessary to continuously rotate the actuator to connect or disconnect the output shaft connecting rod of the actuator and the valve stem of the regulating valve.

[0003] After inquiry, there are currently three patents related to this patent, and the specific comparison is as follows:

[0004] "Electric Actuator". This patent solves the problem of inconvenient installation and disassembly of internal parts of an electric actuator.

[0005] "A Double Diaphragm Actuator". This patent is used to solve the problem of small output force of a single diaphragm in the prior art, and the output shaft connecting rod of the pneumatic actuator and the valve stem of the regulating valve are connected by a split nut. The disadvantage of the split nut is that it is likely to cause the output shaft connecting rod of the actuator to become disengaged from the valve stem of the regulating valve for high-torque actuators.

[0006] "A Screwing Nut Suitable for Online Replacement of Gate Valves and Globe Valves". This patent is only applicable to the screwing nut suitable for online installation and online replacement of gate valves and globe valves.

[0007] However, there are still deficiencies in the use of the above patents. For example, during use, there are problems such as unstable connection and inconvenient disassembly, resulting in low work efficiency and high labor intensity during replacement. Therefore, a connecting component for connecting the output shaft connecting rod of an actuator and the valve stem of a regulating valve is proposed. Content of the Utility Model

[0008] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a connecting component for connecting the output shaft connecting rod of an actuator and the valve stem of a regulating valve is proposed.

[0009] To achieve the above object, the utility model adopts the following technical solutions: A connecting component for connecting the actuator output shaft connecting rod and the regulating valve stem, including an actuator output shaft connecting piece, a regulating valve stem connecting piece is arranged below the actuator output shaft connecting piece, a groove is formed on the upper surface of the regulating valve stem connecting piece, the convex end of the actuator output shaft connecting piece extends into the groove, a first through port is formed on the right side surface of the convex end of the actuator output shaft connecting piece, two second through ports are formed on the inner wall of the groove, a square pin is jointly arranged inside the two second through ports and the first through port, two first clamping grooves are formed on the upper surface of the actuator output shaft connecting piece, two second clamping grooves are formed on the bottom surface of the regulating valve stem connecting piece, two spring clips are jointly clamped by the two first clamping grooves and the two second clamping grooves, an actuator output shaft is arranged above the actuator output shaft connecting piece, an actuator connecting rod is fixedly connected to the bottom end of the actuator output shaft, and a valve stem body is arranged below the regulating valve stem connecting piece.

[0010] As a further description of the above technical solution:

[0011] A pulling piece is arranged at the bottom end of each spring clip, and each pulling piece is located below the second clamping groove.

[0012] As a further description of the above technical solution:

[0013] Two groups of positioning holes are formed on the upper surface of the regulating valve stem connecting piece, a positioning rod is arranged inside each positioning hole, and the upper surface of each positioning rod is fixedly connected to the bottom surface of the actuator output shaft connecting piece.

[0014] As a further description of the above technical solution:

[0015] A first connecting hole is formed on the upper surface of the actuator output shaft connecting piece, and threads are formed on the inner wall of the first connecting hole.

[0016] As a further description of the above technical solution:

[0017] A second connecting hole is formed on the bottom surface of the regulating valve stem connecting piece, and threads are formed on the inner wall of the second connecting hole.

[0018] The utility model has the following beneficial effects:

[0019] 1. Compared with the prior art, for a connection assembly used to connect the actuator output shaft connecting rod and the regulating valve stem, by arranging the convex end of the actuator output shaft connecting piece to extend into the groove, it can cooperate with the regulating valve stem connecting piece to increase the load-bearing performance for large torques, effectively prevent the actuator and the regulating valve from falling off during use, and through the cooperation of the direction pin, the first through port and the second through port, limit the actuator output shaft connecting piece to prevent separation, and cooperate with the spring chuck to position the square pin to prevent the square pin from falling off. Moreover, it has the advantages of being tight and reliable, convenient to disassemble, improving work efficiency and reducing labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a schematic perspective view of a connection assembly for connecting an actuator output shaft connecting rod and a regulating valve stem proposed by the present utility model;

[0021] Figure 2 FIG. is a schematic structural view of the regulating valve stem connecting piece in a connection assembly for connecting an actuator output shaft connecting rod and a regulating valve stem proposed by the present utility model;

[0022] Figure 3 FIG. is a schematic structural view of the bottom view of the regulating valve stem connecting piece in a connection assembly for connecting an actuator output shaft connecting rod and a regulating valve stem proposed by the present utility model;

[0023] Figure 4 FIG. is a schematic perspective view of the actuator output shaft piece in a connection assembly for connecting an actuator output shaft connecting rod and a regulating valve stem proposed by the present utility model;

[0024] Figure 5 FIG. is a schematic structural view of the spring card in a connection assembly for connecting an actuator output shaft connecting rod and a regulating valve stem proposed by the present utility model.

[0025] LEGEND DESCRIPTION:

[0026] 1. Actuator output shaft connecting piece; 2. Regulating valve stem connecting piece; 3. Spring card; 4. First connection hole; 5. First card slot; 6. Positioning hole; 7. Second through port; 8. Square pin; 9. Groove; 10. Positioning rod; 11. Second card slot; 12. Second connection hole; 13. First through port; 14. Pull tab; 15. Actuator output shaft; 16. Valve stem body; 17. Actuator connecting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Referring to Figures 1-5 , a connection assembly provided by the present utility model for connecting the actuator output shaft connecting rod and the regulating valve stem: It includes an actuator output shaft connecting member 1. Below the actuator output shaft connecting member 1, there is a regulating valve stem connecting member 2. A groove 9 is opened on the upper surface of the regulating valve stem connecting member 2. The convex end of the actuator output shaft connecting member 1 extends into the interior of the groove 9. A first through port 13 is opened on the right side surface of the convex end of the actuator output shaft connecting member 1. Two second through ports 7 are opened on the inner wall of the groove 9. A square pin 8 is jointly arranged inside the two second through ports 7 and the first through port 13. Two first card slots 5 are opened on the upper surface of the actuator output shaft connecting member 1. Two second card slots 11 are opened on the bottom surface of the regulating valve stem connecting member 2. Two spring clips 3 are jointly clamped by the two first card slots 5 and the two second card slots 11. Above the actuator output shaft connecting member 1, there is an actuator output shaft 15. The bottom end of the actuator output shaft 15 is fixedly connected with an actuator connecting rod 17. Below the regulating valve stem connecting member 2, there is a valve stem body 16.

[0029] In this embodiment, a pull tab 14 is provided at the bottom end of each spring clip 3. Each pull tab 14 is located below the second card slot 11. By providing the pull tab 14, the spring clip 3 can be pulled, so as to facilitate the disassembly of the spring clip 3, and further facilitate the disassembly of the actuator output shaft connecting member 1. Two groups of positioning holes 6 are opened on the upper surface of the regulating valve stem connecting member 2. A positioning rod 10 is arranged inside each positioning hole 6. The upper surface of each positioning rod 10 is fixedly connected with the bottom surface of the actuator output shaft connecting member 1. By providing the cooperation of the positioning rod 10 and the positioning hole 6, the load of the actuator output shaft connecting member 1 can be reduced, thereby prolonging the service life of the device during use.

[0030] In this embodiment, a first connection hole 4 is opened on the upper surface of the actuator output shaft connecting member 1. Threads are opened on the inner wall of the first connection hole 4. By providing the first connection hole 4, it is convenient to connect with the output shaft of the actuator. A second connection hole 12 is opened on the bottom surface of the regulating valve stem connecting member 2. Threads are opened on the inner wall of the second connection hole 12. By providing the second connection hole 12, it is convenient to connect with the valve stem of the control valve.

[0031] Working principle: First, rotate the first connection hole 4 on the actuator output shaft connecting piece 1 clockwise and fasten it to the actuator connecting rod 17. Then, rotate the second connection hole 12 on the regulating valve stem connecting piece 2 clockwise and fasten it to the valve stem body 16. Connect the actuator output shaft connecting piece 1 and the regulating valve stem connecting piece 2 together according to the concave and convex grooves. Then, insert the square pin 8 into the first through port 13 and the second through port 7 to insert and connect the actuator output shaft connecting piece 1 and the regulating valve stem connecting piece 2. Finally, clamp the spring clip 3 on the first card slot 5 on the actuator output shaft connecting piece 1 and the second card slot 11 at the bottom of the regulating valve stem connecting piece 2, and the entire connection process is completed.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A connecting component for connecting the actuator output shaft connecting rod and the regulating valve stem, including an actuator output shaft connecting member (1), characterized in that: Below the actuator output shaft connecting piece (1), there is a regulating valve stem connecting piece (2). A groove (9) is formed on the upper surface of the regulating valve stem connecting piece (2). The convex end of the actuator output shaft connecting piece (1) extends into the interior of the groove (9). A first through port (13) is formed on the right side surface of the convex end of the actuator output shaft connecting piece (1). Two second through ports (7) are formed on the inner wall of the groove (9). A square pin (8) is jointly arranged inside the two second through ports (7) and the first through port (13). Two first clamping grooves (5) are formed on the upper surface of the actuator output shaft connecting piece (1). Two second clamping grooves (11) are formed on the bottom surface of the regulating valve stem connecting piece (2). Two spring clips (3) are jointly clamped by the two first clamping grooves (5) and the two second clamping grooves (11). Above the actuator output shaft connecting piece (1), there is an actuator output shaft (15). The bottom end of the actuator output shaft (15) is fixedly connected with an actuator connecting rod (17). Below the regulating valve stem connecting piece (2), there is a valve stem body (16).

2. The connecting assembly for connecting the actuator output shaft connecting rod and the regulating valve stem according to claim 1, characterized in that: A pull tab (14) is arranged at the bottom end of each spring clip (3). Each pull tab (14) is located below the second clamping groove (11).

3. The connecting assembly for connecting the actuator output shaft connecting rod and the regulating valve stem according to claim 1, characterized in that: Two groups of positioning holes (6) are formed on the upper surface of the regulating valve stem connecting piece (2). A positioning rod (10) is arranged inside each positioning hole (6). The upper surface of each positioning rod (10) is fixedly connected with the bottom surface of the actuator output shaft connecting piece (1).

4. A connecting component for connecting the actuator output shaft link and the regulating valve stem according to claim 1, characterized in that: A first connecting hole (4) is formed on the upper surface of the actuator output shaft connecting piece (1). Threads are formed on the inner wall of the first connecting hole (4).

5. A connecting assembly for connecting the output shaft link of an actuator and the valve stem of a regulating valve according to claim 1, characterized in that: A second connecting hole (12) is formed on the bottom surface of the regulating valve stem connecting piece (2). Threads are formed on the inner wall of the second connecting hole (12).

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