Connection positioning device between valve shaft and valve plate of butterfly valve

Abstract

The invention relates to a connection positioning device between a valve shaft and a valve plate of a butterfly valve, relates to the technical field of valve manufacturing, and particularly relates to a connection positioning and transmission torquer between the valve shaft and the valve plate of the butterfly valve. The valve plate provided by the invention comprises a valve clack and a valve shaft base, wherein the valve shaft base is provided with a vertical through hole used for penetrating through a valve shaft, the valve shaft base is provided with a round locating hole which is transversely arranged and used for positioning the connecting valve shaft, and a wedge groove is arranged at one side of the valve shaft in contact with the round locating hole; and the round locating hole is internally provided with a wedge-shaped pin in a penetrating manner, the diameter of the wedge-shaped pin is the same with the round locating hole, and a semi-cylinder of an inclined plane which is matched with the wedge groove of the valve shaft is contacted with one side of the valve shaft. The connection positioning device provided by the invention has the advantages that the process manufacturing is easy, the assembly and disassembly are convenient, the carryover moment is large, the manufacturing and assembly efficiency is high, in addition, the wedge-shaped pin is reusable, the material is saved, and the cost is lowered.

Description

technical field [0001] The invention relates to the technical field of valve manufacturing, in particular to a device for connection, positioning and torque transmission between a valve shaft and a valve plate of a butterfly valve. Background technique [0002] In the prior art, the valve shaft and the valve plate of the butterfly valve are generally connected by taper pins. This connection method needs to be matched during the assembly process, which is difficult and inefficient. It is also difficult to carry out mass production on the assembly line, and After the disassembly, the taper pin is scrapped and cannot be reused, which increases the cost. Contents of the invention [0003] The object of the present invention is to provide a connection and positioning device between the valve shaft and the valve plate of a butterfly valve with high efficiency and easy disassembly. [0004] The technical solution to achieve the above purpose is: the connection and positioning...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the valve shaft and the valve plate of the butterfly valve are generally connected by taper pins. This connection method needs to be matched during the assembly process, which is difficult and inefficient. It is also difficult to carry out mass production on the assembly line, and After disassembly, the taper pin is scrapped and cannot be reused, which increases the cost

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