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Energy-saving rubber sealing butterfly valve

A technology of rubber seals and butterfly valves, which is applied in the field of new hoist emergency operators, can solve the problems of weakened sealing performance, increased service time, and easy wear of soft seals, so as to improve the sealing effect, increase the service life, and reduce the sealing force Effect

Active Publication Date: 2019-06-18
HENAN UNIVERSE VALVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Energy-saving rubber sealing butterfly valve

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Embodiment Construction

[0010] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0011] Depend on figure 1 Given, an energy-saving rubber-sealed butterfly valve includes a valve seat 1 with an inlet and an outlet, and a valve plate 2 is arranged in the valve seat 1, characterized in that the valve plate 2 is fixed with a valve shaft rotatably connected to the valve seat 1 3. The upper part of the valve seat 1 is connected with a valve cover 4, the valve shaft 3 extends upward into the valve cover 4, the valve shaft 3 is fixedly connected with one side of the valve plate 2, and the side of the valve plate 2 away from the valve shaft 3 is provided with a direction away from the valve shaft 3. The valve cavity 5 is opened on one side of the valve shaft 3, the side of the valve plate 2 is provided with an annular valve groove 6, the valve cavity 5 and the valve groove 6 are communicated through the channel provided i...

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PUM

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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 hoist equipment, in particular to a novel hoist emergency operator. Background technique [0002] Butterfly valve, also known as flap valve, is a kind of regulating valve with simple structure. Butterfly valve that can be used for on-off control of low-pressure pipeline medium means that the closing member (disc or butterfly plate) is a disc, which rotates around the valve shaft 3 to achieve opening and closing. A valve that is closed. At present, there are two commonly used sealing surface materials for butterfly valves: metal-to-metal seal (referred to as metal seal) and metal-to-non-metal soft material seal (referred to as soft seal). And in the process of processing, the requirements for the processing accuracy of the sealing surface can be reduced. However, because the valve disc is a metal material, the soft seal is easy to wear due to the limitation of machining accuracy and roughness. When the pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/22F16K1/226F16K31/44
Inventor 贾景州
Owner HENAN UNIVERSE VALVE CO LTD
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