WO2022052306A1

WO2022052306A1 - Quick-release tool applied to valve shaft of electric butterfly valve and coupling

Info

Publication number: WO2022052306A1
Application number: PCT/CN2020/130105
Authority: WO
Inventors: 丁占锋; 郭仁龙; 张兰庆; 杨柏依; 杨富强; 董鹏; 李�杰
Original assignee: 华能莱芜发电有限公司
Priority date: 2020-09-14
Filing date: 2020-11-19
Publication date: 2022-03-17
Also published as: CN213592774U

Abstract

Disclosed is a quick-release tool applied to a valve shaft of an electric butterfly valve and a coupling. The tool comprises a positioning member (1) for fixing a coupling (2) and a force applying screw (4) for separating the coupling (2) from a valve shaft (3). A positioning cavity (5) and a threaded hole (6) communicated with the positioning cavity (5) are provided on the positioning member (1). The side of the positioning cavity (5) away from the threaded hole (6) is provided with an opening. The positioning cavity (5) and the threaded hole (6) are coaxially provided. The force applying screw (4) is threadedly connected in the threaded hole (6) and can extend into the positioning cavity (5). The diameter of the force applying screw (4) is smaller than the hole diameter of a central hole of the coupling (2). At least one group of abutment members are mounted on a cavity wall of the positioning cavity (5), and each group of abutment members comprise two abutment screws (7) provided opposite to each other. The tool solves the problem of difficult separation, caused by corrosion, at a position where a valve shaft and a coupling are connected, improves the working efficiency of the separation between a valve shaft and a coupling, and avoids the problem of coupling damages caused during separation.

Description

Quick Release Tool for Electric Butterfly Valve Shafts and Couplings

technical field

The utility model relates to the technical field of electric butterfly valve maintenance, in particular to a quick-release tool applied to a valve shaft and a coupling of an electric butterfly valve.

Background technique

In power plants, there are many pipeline systems. Electric butterfly valves can be used as shut-off valves, control valves and check valves of pipeline systems, and are important components in pipeline systems. The electric butterfly valve mainly includes an electric drive part and a valve body. The electric drive part is generally an electric motor. The valve body generally includes a valve seat, a butterfly plate and a valve shaft. The valve shaft is connected to the output shaft of the motor through a coupling, and the valve shaft is connected to the coupling shaft. There is a key connection between the valves, and the motor action drives the valve shaft to rotate through the coupling, so as to realize the adjustment of the butterfly valve opening.

During long-term use, the valve body is easily damaged. When the valve body is damaged, it is necessary to release the connection between the valve shaft and the coupling, and then replace the valve body. Since the connection between the valve shaft and the coupling is easy to corrode, it is difficult to separate the valve shaft and the coupling.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides a quick release tool applied to the valve shaft and the coupling of an electric butterfly valve, which solves the problem of difficult separation caused by corrosion at the connection between the valve shaft and the coupling.

The utility model is realized through the following technical solutions, and provides a quick-release tool applied to the valve shaft and the coupling of an electric butterfly valve, including a positioning member for fixing the coupling and a force for separating the coupling and the valve shaft A screw; a positioning cavity and a threaded hole communicated with the positioning cavity are arranged on the positioning member, an opening is provided on the side of the positioning cavity away from the screw hole, the positioning cavity is coaxial with the screw hole, and the force application screw is threadedly connected in the threaded hole and can extend into the positioning cavity; the diameter of the force application screw is smaller than the diameter of the central hole of the coupling; at least one set of pressing parts is installed on the cavity wall of the positioning cavity, and each set of pressing parts includes Two jacking screws set opposite to each other.

Preferably, the top tightening screw is screwed on the cavity wall of the positioning cavity and is perpendicular to the central axis of the positioning cavity.

Preferably, the jacking screw is located close to the opening of the positioning cavity. In this way, by rotating the jacking screw, the jacking screw is blocked on the outer side of the convex surface of the coupling, and the coupling is limited in the positioning cavity.

Preferably, there are two sets of the pressing members. The limitation of the position of the coupling can be fully guaranteed to prevent the coupling from moving out of the positioning cavity.

Preferably, the positioning cavity is cylindrical, and the inner diameter of the positioning cavity is the same as the maximum outer diameter of the coupling. While ensuring the smooth insertion of the coupling, it is convenient to make the central axis of the coupling coaxial with the central axis of the positioning cavity.

Preferably, the handle is fixed on the positioning member.

The beneficial effects of the present utility model are:

The utility model has the advantages of simple structure and convenient operation, which can facilitate the separation of the coupling and the valve shaft, solves the problem of difficult separation caused by corrosion at the joint between the valve shaft and the coupling, and improves the separation of the valve shaft and the coupling. The work efficiency is high, and the problem of coupling damage caused by the separation process is avoided; the cost is low, and it is easy to popularize and apply.

Description of drawings

Fig. 1 is the structural representation of the utility model;

2 is a schematic diagram of the structure of the utility model in use;

Shown in the picture:

1. Positioning piece, 2. Coupling, 3. Valve shaft, 4. Force-applying screw, 5. Positioning cavity, 6. Threaded hole, 7. Top-tightening screw, 8. Hand-held part.

detailed description

In order to clearly illustrate the technical features of the solution, the solution will be described below through specific implementations.

As shown in FIGS. 1 and 2 , the present invention includes a positioning member 1 for fixing the coupling 2 and a force applying screw 4 for separating the coupling 2 and the valve shaft 3 . The positioning member 1 is provided with a positioning cavity 5 and a threaded hole 6 communicating with the positioning cavity 5 . The force application screw 4 is threadedly connected in the threaded hole 6 and can extend into the positioning cavity 5 , and the length of the force application screw 4 extending into the positioning cavity 5 can be adjusted by rotating the force application screw 4 . The diameter of the forcing screw 4 is smaller than the diameter of the central hole of the coupling 2 .

At least one set of topping parts is installed on the cavity wall of the positioning cavity 5 , and each set of topping parts includes two set-up screws 7 opposite to each other, and the topping screws 7 are screwed on the cavity wall of the positioning cavity 5 and are connected with The central axis of the positioning cavity 5 is vertical.

The top tightening screw 7 is located close to the opening of the positioning cavity 5, so by rotating the top tightening screw 7, the top tightening screw 7 is blocked on the outside of the surface of the coupling 2, and the coupling 2 is limited in the positioning cavity. within 5. In this embodiment, there are two sets of the pressing members, which can fully ensure the limitation of the position of the coupling 2 and prevent the coupling 2 from moving out of the positioning cavity 5 .

In this embodiment, the positioning cavity 5 is cylindrical, and the inner diameter of the positioning cavity 5 is the same as the maximum outer diameter of the coupling 2 , which can ensure the smooth insertion of the coupling 2 and facilitate the operation of the coupling 2 . The central axis is coaxial with the central axis of the positioning cavity 5 .

In order to facilitate the separation of the coupling 2 and the valve shaft 3 , the handle 8 is fixed on the positioning member 1 .

In the specific work, when the valve body needs to be replaced, the connection between the coupling 2 and the motor is first released, and then the coupling 2 is put into the positioning cavity 5, and the end of the coupling 2 connected with the motor is close to the threaded hole 6. The valve shaft 3 is located outside the positioning cavity 5, adjust the top tightening screw 7 to limit the coupling 2 in the positioning cavity 5, then hold the handle 8, and rotate the force application screw 4 with a wrench to make the force application screw 4 Enter the positioning cavity 5 and extend into the central hole of the coupling 2 to contact the valve shaft 3, continue to rotate the force application screw 4, and push the valve shaft 3 out of the central hole of the coupling 2 through the force application screw 4 to realize the coupling The separation of the valve 2 and the valve shaft 3.

The utility model has the advantages of simple structure and convenient operation, which can conveniently realize the separation of the coupling 2 and the valve shaft 3, and solves the problem of difficult separation caused by corrosion at the connection between the valve shaft 3 and the coupling 2; The working efficiency of separation from the coupling 2 avoids the problem of damage to the coupling 2 caused in the separation process; the cost is low, and the promotion and application are convenient.

Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be realized by or using the existing technology, which will not be repeated here; the above embodiments and accompanying drawings are only used to illustrate the technology of the present invention. The solution is not intended to limit the present utility model. The present utility model is described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that the Changes, modifications, additions or substitutions do not depart from the purpose of the present invention, and should also belong to the protection scope of the claims of the present invention.

Claims

The quick-release tool applied to the valve shaft and the coupling of the electric butterfly valve is characterized in that: it includes a positioning piece for fixing the coupling and a force-applying screw for separating the coupling and the valve shaft; a positioning piece is arranged on the positioning piece A cavity and a threaded hole communicated with the positioning cavity, the positioning cavity is provided with an opening on the side away from the threaded hole, the positioning cavity and the threaded hole are coaxially arranged, and the force application screw is threaded in the threaded hole and can extend into into the positioning cavity; the diameter of the force-applying screw is smaller than the diameter of the central hole of the coupling; at least one set of pressing pieces is installed on the cavity wall of the positioning cavity, and each set of pressing pieces includes two oppositely arranged pressing pieces screw.
The quick-release tool applied to the valve shaft and coupling of an electric butterfly valve according to claim 1, characterized in that: the top tightening screw is threadedly connected to the cavity wall of the positioning cavity and is perpendicular to the central axis of the positioning cavity.
The quick-release tool applied to the valve shaft and coupling of an electric butterfly valve according to claim 2, wherein the push-up screw is located at a position close to the opening of the positioning cavity.
The quick-release tool applied to the valve shaft and the coupling of an electric butterfly valve according to claim 1, characterized in that: there are two sets of the pressing parts.
The quick-release tool for an electric butterfly valve shaft and a coupling according to claim 1, wherein the positioning cavity is cylindrical, and the inner diameter of the positioning cavity is the same as the maximum outer diameter of the coupling.
The quick-release tool applied to the valve shaft and the coupling of an electric butterfly valve according to claim 1, characterized in that the hand-held portion is fixed on the positioning member.