Indication non-rising stem butterfly valve shaft fixture with adjustable clearance

Abstract

The invention provides an indication non-rising stem butterfly valve shaft fixture with an adjustable clearance. The indication non-rising stem butterfly valve shaft fixture comprises clamp baffle plates which are symmetrically arranged; a concave part is arranged on each clamp baffle plate; a cushion gasket is arranged in the concave part of each clamp baffle plate; the clamp baffle plate on the left side is fixed on a clamp positioning base; the clamp baffle plate on the right side is connected with a push rod through a clamp fixing rack; the push rod is fixed on an adjusting and positioning device through a push rod stabilization plate; an inner sleeve pipe is arranged in the adjusting and positioning device; one end of the inner sleeve pipe extends into the inner part of the push rod; the other end of the inner sleeve pipe is fixedly connected with an inner sleeve pipe fixing pin; the inner sleeve pipe fixing pin is connected with the inner sleeve pipe through occlusion tongs; an adjusting hand wheel is connected with the inner sleeve pipe fixing pin; and a fixture base is connected to the bottom part of the adjusting and positioning device. The indication non-rising stem butterfly valve shaft fixture has the advantages and positive effects that the structure is simple, and the assembly and positioning are rapid and convenient, so that the positioning and assembling work efficiency of the valve shaft of a non-rising stem butterfly valve can be greatly improved; the torsion is large, and the opening size is adjustable, so that the valve shaft and clamp plates are protected from damage during an assembly or disassembly process; and the indication non-rising stem butterfly valve shaft fixture is applicable to valves of multiple models.

Description

technical field [0001] The invention belongs to the technical field of valve manufacturing equipment, and in particular relates to a tooling for indicating a hidden rod butterfly valve shaft with adjustable clearance. Background technique [0002] The opening and closing part of the hidden rod gate valve is the gate, and the movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate has two sealing surfaces, and the two sealing surfaces of the most commonly used pattern gate valve form a wedge, and the wedge angle varies with the valve parameters. The gate of the wedge gate valve can be made into a whole, called a rigid gate; it can also be made into a gate that can produce a small amount of deformation to improve its manufacturability and compensate for the deviation of the sealing surface angle during processing. The plate is called the elastic gate....

AI Technical Summary

Problems solved by technology

At present, the valve shaft installation fixtures for dark stem gate valves are all rigid structures, and one kind of fixture can only be used for one specification of valves. In order to avoid damage to the valve caused by the valve fixture due to inconsistency in size, it can meet the production requirements for fixtures and equipment. , it is necessary to design a valve shaft tooling of a dark stem gate valve with large torque and adjustable opening size

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