An Energy Saving Rubber Seal Butterfly Valve

Abstract

The invention provides an energy-saving rubber sealing butterfly valve which can reduce friction and abrasion. The larger pressure in a pipeline is, the better sealing performance is. A valve shaft connected with a valve base in a rotating manner is fixed to a valve plate. A valve cover is connected to the upper portion of the valve base. The valve shaft extends into the valve cover upwards. The valve shaft is fixedly connected with one side of the valve plate. One side face, away from the valve shaft, of the valve plate is provided with a valve cavity opened towards the side away from the valve shaft. A ring-shaped valve groove is formed in the side face of the valve plate. The valve cavity and the valve groove communicate through a channel formed in the valve plate. An opening of the valve cavity is provided with an elastic plate for sealing the valve cavity. The valve groove is provided with an elastic sealing ring for sealing the valve groove. The valve shaft is connected with a drive mechanism for driving the valve shaft to rotate. When the valve plate is closed, the sealing effect on the valve base by the valve plate is increased along with increase of pressure of water flow,and the sealing effect is improved. When the opening degree of the butterfly valve is small, the sealing force on the valve base by the valve plate is reduced remarkably, abrasion to the sealing ringis reduced, and the service life of the butterfly valve is prolonged.

Description

technical field [0001] The invention relates to the field of screw type hoist equipment, in particular to a novel hoist emergency operator. 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. of a valve. At present, there are two commonly used materials for the sealing surface of butterfly valves: metal-to-metal seals (referred to as metal seals) and metal-to-non-metal soft material seals (referred to as soft seals). The impact of metal seal longevity on machining accuracy, soft seal rings are easy to achieve tight seals, Moreover, the requirements for the machining accuracy of the sealing surface can be reduced during processing. However, since the disc is made of metal, the soft seal is easy to wear due to the limitation of machining accuracy and roughness. As the pressure in the pipeline increases, the sealing performance of the butter...

AI Technical Summary

Problems solved by technology

However, since the disc is made of metal material, the soft seal is easy to wear due to the limitation of machining accuracy and roughness.

As the pressure in the pipeline increases, the sealing performance of the butterfly valve will weaken as the service time increases.

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