Installation fixture of press-seat butterfly valve seat

Abstract

The invention relates to an installation fixture of a press-seat butterfly valve seat, which is composed of a cylindrical pedestal with a cavity for placing a valve body, a strip support plate arranged corresponding to the position and the length of an upper valve neck, a shaft-hole locating pin inserted into the shaft hole of the upper valve neck, a locating pin handle for pushing and pulling the shaft-hole locating pin, a bearing equipped with guide holes of the shaft-hole locating pin, a left valve seat locating pin and a right valve seat locating pin inserted in the shaft hole of the valve seat, a left support and a right support equipped with the guide holes of a valve seat locating pin respectively, a cam, a cam shaft connecting the cam, a rotating handle of the cam and three vertical elastic locating pins of the valve body. The axial line of the shaft-hole locating pin, the axial lines of the left valve seat locating pin and the right valve seat locating pin and a central line are in the same vertical plane; and the three vertical elastic locating pins of the valve body are alternately arranged on the end surface of the cylindrical pedestal at the position attaching to the inner wall of the valve body. The installation fixture has the beneficial effects of guaranteeing the coaxiality of the valve body and the shaft hole of the valve seat, saving labor cost, eliminating noise, improving operating conditions and environment and enhancing production efficiency.

Description

technical field [0001] The invention relates to a butterfly valve assembly process device, in particular to a press-seat type butterfly valve seat installation fixture. Background technique [0002] The butterfly valve is a valve that uses the valve plate as the opening and closing part and rotates with the valve stem to open, close and adjust the fluid passage. Butterfly valve is not only simple in structure, small in size and light in weight, low in material consumption, but also has small driving torque, easy and fast operation, and has good flow regulation function. In the field of use of large and medium diameters and medium and low pressures, butterfly valves are the leading valve form . The butterfly valve mainly includes a circular valve body with upper and lower valve necks, a circular valve seat embedded in the inner wall of the valve, a circular valve plate, and inserted into the lower valve through the shaft hole of the upper valve neck and the shaft holes at bo...

AI Technical Summary

Problems solved by technology

At present, in the butterfly valve manufacturing industry, this process is still mainly manual, and the valve seat is knocked into the valve body with a hammer entirely by manpower. Due to the irregular manual force, not only the coaxiality of the valve body and the shaft hole of the valve seat after installation It is difficult to guarantee, and the valve seat is easily damaged due to beating, especially the labor intensity is high during the operation, which consumes manpower and working hours, and the noise is loud, which seriously affects the production environment, reduces production efficiency, and increases production costs.

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