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Highly-sealed ball valve

A high-sealing, ball valve technology, used in valve devices, pipes, cocks including cut-off devices, etc., can solve the problems that the sealing ring or sealing block cannot withstand high temperature, the sealing is not strict, and the production is affected, so as to achieve good sealing, Good sealing coordination and good overall sealing effect

Active Publication Date: 2014-07-30
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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  • Highly-sealed ball valve
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Examples

Experimental program
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Effect test

Embodiment Construction

[0012] Example, see Figure 1 to Figure 4 As shown: a high-sealing ball valve includes a main valve body 10 with a passage 11 passing through the main valve body 10. The middle of the passage 11 is provided with a valve seat assembly 20, and the middle of the passage 11 is provided with a rotatable valve stem 30. A ball 31 matched with the valve seat assembly 20 is fixed on the valve stem 30. That is, the sphere 31 closely fits with the sealing surface of the valve seat assembly 20, so as the valve stem 30 rotates, the sphere 31 follows the rotation, so that the overlap between the through hole of the sphere 31 and the passage 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 may be two groups located on both sides of the ball 31. The following takes the group located on the right side of the sphere 31 as an example for description.

[0014] The valve seat assembly 20 includes a hard-seal valve...

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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-sealing ball valve. Background technique [0002] The ball valve is the most commonly used valve. The ball and seat are usually sealed by rubber O-rings or sealing blocks made of PTFE materials. The disadvantage is that the sealing ring or the sealing block cannot withstand high temperature, and the sealing condition will appear after a period of use, which will affect the production to a certain extent. Summary of the invention [0003] The purpose of the present invention is to provide a high-sealing ball valve, which has the characteristics of being able to withstand high temperatures and having good sealing performance. [0004] The technical solution adopted by the present invention is: a high-sealing ball valve, including a main valve body, the main valve body has a passage through the main valve body, the middle of the passage is provided with a valve seat assembly, and the...

Claims

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Application Information

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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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