Method for maintaining butterfly valve sealing mechanism on line

A technology of sealing mechanism and butterfly valve, applied in the direction of lifting valve, valve device, mechanical equipment, etc., can solve the problems of inconvenient maintenance of butterfly valve, scrapping of butterfly valve, inconvenient maintenance, etc., and achieve the effect of shortening maintenance time, reducing loss and avoiding inconvenience

Inactive Publication Date: 2012-09-26
GALUMPH SUZHOU GRP
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The key to the opening and closing of the butterfly valve is the tightness between the valve body and the butterfly plate. Since the butterfly plate is in the state of opening and closing for a long time, there is more friction between the butterfly plate and the valve body, and wear is prone to occur between the two, resulting in tightness. Poor or not sealed, seri

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  • Method for maintaining butterfly valve sealing mechanism on line
  • Method for maintaining butterfly valve sealing mechanism on line
  • Method for maintaining butterfly valve sealing mechanism on line

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[0016] The present invention will be further described below in conjunction with the drawings and embodiments:

[0017] First introduce a butterfly valve, including a valve body 1, a butterfly plate and a valve stem. The valve body 1 is provided with a shaft hole 10, the valve stem passes through the shaft hole 10 and is fixedly connected to the butterfly plate, and the valve body 1 cooperates with the butterfly plate to form an opening. Closed pathway. Among them, the butterfly plate and the valve stem are not the key points of the design of the present invention, and their structures are not described here.

[0018] Such as Figure 1-3 As shown: a sealing mechanism is provided between the valve body 1 and the butterfly plate. The sealing mechanism includes a groove 11 opened on the valve body 1, and a sealing ring 2 arranged in the groove 11. In this embodiment, the valve body 1 There is an annular valve seat 12, the annular valve seat 12 has an outer peripheral surface 120, an i

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Abstract

The invention relates to a method for maintaining a butterfly valve sealing mechanism on line. The butterfly valve sealing mechanism comprises a groove which is formed on a valve body, and a sealing ring which is arranged in the groove, wherein the sealing ring is provided with a dovetail groove-shaped edge which is inserted into the groove in an inverted mode; resin is injected between the dovetail groove-shaped edge and the groove; a hole is formed on the surface of the valve body and is communicated with the groove; and the resin is injected into the groove through the hole. The method is characterized by comprising the following steps of: when the sealing ring is worn or broken, closing the butterfly valve, breaking the sealing of the hole, injecting the resin into the groove through the hole to ensure that the sealing ring squeezes a butterfly plate of the butterfly valve outwards until the sealing ring and the butterfly plate are sealed completely, sealing the hole, and solidifying the resin to finish maintenance. According to the method, by adoption of online maintenance, direct maintenance of the butterfly valve sealing mechanism can be realized under the condition that the butterfly valve is not dismounted, so that inconvenience caused by the conventional maintenance method is avoided, the maintenance time is shortened, the loss caused by the maintenance is reduced, and the maintenance difficulty is reduced.

Description

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Claims

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Application Information

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Owner GALUMPH SUZHOU GRP
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