Elastic seat sealed plug valve

A sealing plug valve, elastic technology, applied in the field of elastic seat sealing plug valve, can solve the problems of high machining precision, high processing cost, and large frictional displacement of the sealing surface, etc.

Inactive Publication Date: 2004-03-24
SHANGHAI KARON VALVES MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing cock valve, the center of the sealing circular arc surface of the cock body and the valve seat coincides with the center of rotation of the valve body, and there is only a circumferential displacement between the sealing surfaces. When the valve is opened or closed, the frictional displacement between the sealing surfaces is relatively large, and the sealing surface High processing accuracy requirements and high processing costs

Method used

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  • Elastic seat sealed plug valve
  • Elastic seat sealed plug valve
  • Elastic seat sealed plug valve

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Experimental program
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Embodiment Construction

[0009] Such as figure 1 , figure 2 As shown, the elastic seated plug valve of the present invention includes a valve body 1 , a cock body 3 , a lower sleeve 2 and an upper sleeve 4 . The valve body 1 has fluid inlet and outlet passages connected with each other, a cock body installation passage and a valve seat 11 . The cock body 3 is integrally cast with the valve shaft, and the cock is molded and covered with rubber. The cock body 3 is combined with the lower bushing 2 and the upper bushing 4 and is located in the cock body installation channel of the valve body 1 . The center of rotation of the cock body 3 is located at the center of rotation of the valve body 1. The geometric centers of the sealing arc surface of the cock body 3 and the sealing arc surface of the valve seat 11 are both offset from the center of rotation of the valve body 1. The eccentricity is e, and the two sealing arcs The faces are equal in size, and the sealing faces fit together when the valve is ...

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Abstract

The present invention relates to an elastic seat-sealed valve. It can effectively reduce friction force and frictional displacement produced when the valve is closed or opened, can reduce flow resistance coefficient of the valve, raise flow property of the valve and reduce working accuracy. Said invention is characterized by that its plug body and valve seat and adopt eccentric structure, in the valve closed position the sealing surface of the plug body and sealing surface of the valve seat are tightly combined together, at the same time of plug body rotation it can produce circumferential displacement and radial displacement, and can be quickly separated from valve seat. It can be used for treating industrial sewage, city sewage, sludge and medium with high solid content.

Description

technical field [0001] The invention relates to valves, in particular to an elastic seated plug valve Background technique [0002] The plug valve is the earliest valve used because of its simple structure, rapid switching, and small fluid resistance. In order to continuously expand the application field of the plug valve, its structure is also continuously improved. However, in the existing cock valve, the center of the sealing circular arc surface of the cock body and the valve seat coincides with the center of rotation of the valve body, and there is only a circumferential displacement between the sealing surfaces. When the valve is opened or closed, the frictional displacement between the sealing surfaces is relatively large, and the sealing surface The processing precision is higher and the processing cost is higher. Since the center of the sealing arc surface coincides with the center of rotation of the valve body, the cock body is located in the center of the flow c...

Claims

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Application Information

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IPC IPC(8): F16K5/00F16K5/14
Inventor 李政宏
Owner SHANGHAI KARON VALVES MACHINERY
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