Butterfly valve with high sealing performance

Abstract

The invention relates to a butterfly valve, in particular to the butterfly valve with high sealing property. The butterfly valve comprises a sealing rubber barrel, semi-shells, a rotary rod, connectors, a pull rod and connecting tubes. Compared with a conventional butterfly valve, the butterfly valve is easily dismounted, and can be independently replaced after certain part is damaged; while internally blocked, the butterfly valve is easily dismounted to clear; the butterfly valve is easily opened and closed; the pull rod can be locked when the butterfly valve is closed, so that the problem that a butterfly plate is automatically opened as a result of too great water pressure is avoided; the two semi-shells are symmetrically arranged left and right, and are separately inserted into left and right ends of the sealing rubber barrel; the rotary rod is rotatably connected onto the sealing rubber barrel and is rotatably connected between the two semi-shells; the upper ends and the lower ends of the two semi-shells are connected through the connectors; the rotary rod is rotatably connected with the two connectors; the upper and lower ends of the rotary rod are fixedly connected with thepull rod; and front and rear ends of the sealing rubber barrel are fixedly connected with the connecting tubes.

Description

technical field [0001] The invention relates to a butterfly valve, more specifically a butterfly valve with high sealing performance. 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. Butterfly valve refers to a valve whose closing part is a disc, which rotates around the valve shaft to achieve opening and closing. Valves 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. The traditional butterfly valve is not easy to disassemble, and if a part is damaged, it needs to be re...

AI Technical Summary

Problems solved by technology

The traditional butterfly valve is not easy to disassemble, and if a part is damaged, it needs to be replaced as a whole, resulting in waste

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