Butterfly valve with fast adjusting and precise positioning functions

Abstract

The invention discloses a butterfly valve with fast adjusting and precise positioning functions. The butterfly valve comprises a base. The top of the base is fixedly connected with the bottom of the side surface of a valve body. Both the left side and the right side of the inner side wall of the valve body are sleeved with valve rod bearings. The opposite sides of the two valve rod bearings are movably connected through a main valve rod. The side surface of the main valve rod is fixedly connected with one side of a water-stop plate. One side of the water-stop plate is fixedly connected with areinforcing plate. The reinforcing plate is sleeved with the main valve rod. According to the butterfly valve, through cooperative use of a guide rod, a stop dog, limiting grooves, an inserting rod, an extrusion spring, sliding blocks and telescopic rods, when the water-stop plate in the butterfly valve needs to be adjusted quickly, an operating wheel is pulled, the inserting rods are extruded bythe limiting grooves in the guide rod, the sliding blocks extrude the extrusion spring, and then the inserting rod can be inserted into the limiting groove in the right side, so that the guide rod canbe fixed in a through groove, operation of the equipment is facilitated, and the purposes of quick adjustment of the flow and precise control over the flow can be achieved.

Description

technical field [0001] The invention relates to the technical field of butterfly valves, in particular to a butterfly valve that can be quickly adjusted and positioned accurately. Background technique [0002] Butterfly valve, also known as flap valve, is a regulating valve with simple structure, which can be used for switch control of low-pressure pipeline medium. A kind of valve, the valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It mainly plays the role of cutting and throttling on the pipeline. The opening and closing part of the butterfly valve is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjustment. [0003] Butterfly valves currently on the market basically directly adjust the rotation of the circular valve plate by turning the handle, so as to realize the adjustment...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a butterfly valve that can be quickly adjusted and accurately positioned, which solves the problems in the prior art that the adjustment of the butterfly valve takes a long time and cannot accurately control the flow

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