Butterfly valve assembly line

Abstract

The invention relates to a butterfly valve assembling line. The butterfly valve assembling line is characterized by comprising a plurality of facilities and belt conveyors which are arranged between every two neighboring facilities, the facilities and the belt conveyors are arranged along the assembly sequence, the facilities which are arranged sequentially are a shaft sleeve installing machine, a scutcheon installing table, a butterfly valve assembly machine used for installing valve seats, valve plates and valve shafts, a limit gland fixing table, a valve plate close leveling device, an arresting disc or a hand shank or a screwed plug installing table, a first sealing property testing machine, an arresting disc or a hand shank fixing table, an installing table for taper pins, a second sealing property testing machine and a driving head installing table; the butterfly valve assembly machine comprises a rack, a positioning fixture capable of disassembling and replacing valve bodies, a positioning fixture capable of disassembling and replacing valve plates, a positioning fixture capable of disassembling and replacing valve seats, a valve shaft oil cylinder top depressor and a lower valve shaft electric wrench top depressor, the valve plate close leveling device is a valve plate level pressure device of a pneumatic butterfly valve, and the first sealing property testing machine is a full-automatic butterfly valve sealing property testing machine. The butterfly valve assembling line has the advantages of being automatic, efficient and high in quality.

Description

technical field [0001] The invention relates to the technical field of butterfly valve assembly production, in particular to a butterfly valve assembly production line. Background technique [0002] The butterfly valve has the characteristics of simple structure, small size, light weight, low material consumption, small installation size, fast switching, small driving torque, etc. It is used to cut off, connect, and adjust the medium in the pipeline. It is easy to operate and has good fluid Control characteristics, widely used in petroleum, gas, chemical industry, water treatment and other fields. 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 inserts through the shaft holes of the upper and lower valve necks and the shaft holes at both ends of the valve seat respectively. The upper and lower valve shafts in the upper and lower shaft holes ...

AI Technical Summary

Problems solved by technology

Existing butterfly valve sealing performance testing machines have a structure that uses water as the sealing medium to test one valve at a time and one side of the cavity at a time. The test efficiency of this structure is low; there is also a structure that uses gas as the sealing medium to test two or more at the same time. The structure of the valve and the cavity on both sides is tested at the same time. With this structure, the butterfly valve and the air leakage pipe led out of the cavity are soaked in water. It is determined whether it is leaking by observing whether the air leakage pipe generates air bubbles in the water, but this structure The disadvantage is that the air leakage pipe is long, the air leakage is not obvious, and it is easy to cause misjudgment, and the structure of the immersed butterfly valve sink is used, resulting in a complicated structure, wasting water, and affecting the environment. Visual positioning is inaccurate, which affects the normal operation; especially the existing test method is still manual control, and the work efficiency is low

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