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Compensation sealing valve seat

A technology for sealing valves and valve seats, which is applied to valve devices, cocks including cut-off devices, engine components, etc., which can solve problems such as leakage of sealing pairs, and achieve the effect of increasing the amount of wear and improving the ability to prevent leakage

Pending Publication Date: 2018-11-30
SICHUAN BRAN SHUWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if used for a long time, leakage will occur due to the wear of the sealing pair

Method used

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  • Compensation sealing valve seat
  • Compensation sealing valve seat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as Figure 1~2 As shown, the compensating sealing valve seat includes an inner ring 3 and an outer ring 5 , the inner ring 3 has a shoulder 31 at an end close to the valve body 2 , and the circumferential direction of the shoulder 31 is connected to the valve body 2 through threads. The outer ring 5 is sleeved on the inner ring 3, and the inner side of the outer ring 5 which is in contact with the inner ring 3 has a circumferential groove, and a compensating spring 4 is arranged in the circumferential groove, and the two ends of the compensating spring 4 Contact the outer ring 5 and the inner ring 3 respectively. In this embodiment, the compensating spring 4 is a disc spring; The fit shape, the fit between the outer ring 5 and the valve core 1 constitutes a first sealing pair, and the fit between the inner ring 3 and the valve core 1 constitutes a second seal pair. In this embodiment, both the first sealing pair and the second sealing pair are rigid seals, that is...

Embodiment 2

[0024] Similarly, a gasket is provided between the end surface of the shoulder 31 and the valve body 2 to prevent the fluid from entering between the shoulder 31 and the valve body 2 into the compensating spring 4 and causing the compensating spring 4 to fail due to corrosion.

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Abstract

The invention discloses a compensation sealing valve seat. The valve seat comprises an inner ring and an outer ring. The end, close to a valve body, of the inner ring is provided with a shoulder, theouter ring sleeves the inner ring, and a compensation spring is arranged between the inner ring and the shoulder. The ends, close to a valve element, of the outer and inner rings are in shapes fittingthe sealing surface of a valve element, the outer ring fits the valve element to form a first sealing pair, and the inner ring fits the valve element to form a second sealing pair. A containing cavity which is distributed in the circumferential direction is formed between the outer ring and the inner ring, a sealing ring is arranged in the containing cavity, and a third sealing pair is formed bythe sealing ring and the valve element. By arranging the compensation spring and a combined sealing pair, the valve seat has the capacities of compensating for manufacturing and installing errors andautomatically compensating for the abrasion amount. The combined sealing pair can be applied to high-low-pressure working environments, and the sealing performance is good.

Description

Technical field: [0001] The invention relates to valve technology, in particular to a compensating sealing valve seat. Background technique: [0002] Eccentric valves are suitable for the requirements of various general industries, such as water, sewage, pulp and other media. However, if used for a long time, leakage will occur due to the wear of the sealing pair. Invention content: [0003] In view of the leakage caused by the wear of the sealing pair of the eccentric valve, a compensation sealing valve seat that can effectively reduce the leakage of the eccentric valve is provided. [0004] The technical solution is a compensating sealing valve seat, the valve seat includes an inner ring and an outer ring, the end of the inner ring near the valve body has a shoulder, the outer ring is sleeved on the inner ring, the A compensating spring is arranged between the inner ring and the shoulder; the outer ring and the inner ring have a shape that fits with the sealing surface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/06F16K5/08F16K5/20
CPCF16K5/061F16K5/0668F16K5/08F16K5/20
Inventor 陈伟
Owner SICHUAN BRAN SHUWEI TECH CO LTD
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