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High sealing ball valve

A high-sealing, ball valve technology, used in valve devices, pipes, cocks including cut-off devices, etc., can solve the problems of production impact, sealing ring or sealing block can not withstand high temperature, poor sealing, etc., to achieve good sealing, Good sealing fit, the effect of good sealing fit

Active Publication Date: 2015-12-16
NINGBO TIANJILONG INTELLIGENT CONTROL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its defect is that the sealing ring or sealing block cannot withstand high temperature, and the sealing will not be tight after a period of use, which will have a certain impact on production

Method used

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  • High sealing ball valve
  • High sealing ball valve
  • High sealing ball valve

Examples

Experimental program
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Effect test

Embodiment Construction

[0012] Examples, see Figure 1 to Figure 4 As shown: a high-tightness ball valve, including a main valve body 10 , and the main valve body 10 has a channel 11 passing through the main valve body 10 . A valve seat assembly 20 is disposed in the middle of the passage 11 , and a rotatable valve stem 30 is disposed in the middle of the passage 11 . A ball 31 matching the valve seat assembly 20 is fixed on the valve stem 30 . That is, the sphere 31 is closely matched with the sealing surface of the valve seat assembly 20, so that as the valve stem 30 rotates, the sphere 31 rotates accordingly, so that the coincidence degree of the passing hole of the sphere 31 and the channel 11 is determined by 0-100% change, and then realize the cut-off and penetration of the channel 11.

[0013] The valve seat assembly 20 can be two groups located on both sides of the ball 31 . The group on the right side of the sphere 31 is taken as an example below for illustration.

[0014] The valve seat...

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Abstract

The invention discloses a highly-sealed ball valve, which comprises a main valve body, wherein the main valve body is provided with a channel penetrating through the main valve body, the middle part of the channel is provided with a valve seat assembly and a rotatable valve rod, the valve rod is fixedly provided with a ball matched with the valve seat assembly, meanwhile, the valve seat assembly comprises a rigidity seal valve seat and a valve seat supporting ring which are matched with each other, and a sealing fin is arranged between the rigidity seal valve seat and the valve seat supporting ring. The sealing fin is manufactured by adopting metal materials, thus being high-temperature resistant. Besides, good sealing match is realized between the inner edge part of the sealing fin and the rigidity seal valve seat through welding, good sealing match is realized between the outer edge part of the sealing fin and the valve seat supporting ring by tightly pressing the outer edge on a sealed step, and thus the ball valve has excellent integrated sealing performance.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a high-tightness ball valve. Background technique [0002] The ball valve is the most commonly used valve, and the seal between the ball and the valve seat is usually sealed by a rubber O-ring or a sealing block made of PTFE material. Its defect is: the sealing ring or the sealing block cannot withstand high temperature, and the situation of tight sealing will occur after a period of use, thereby affecting the production to a certain extent. Contents of the invention [0003] The purpose of the present invention is to provide a high sealing ball valve, which has the characteristics of high temperature resistance and good sealing performance. [0004] The technical solution adopted in the present invention is: a high-seal ball valve, including a main valve body, the main valve body has a passage through the main valve body, the middle part of the passage is provided with a valve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L5/06F16L5/08
CPCF16K5/06F16K5/08F16K5/20
Inventor 易松达张彦王昌林
Owner NINGBO TIANJILONG INTELLIGENT CONTROL TECH
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