Three-eccentric valve with symmetric leakage stop ring

A leak-stop ring, triple eccentric technology, applied in the direction of lift valve, valve details, valve device, etc., can solve problems such as manufacturing difficulties, directional problems, damage to water seals, etc.

Inactive Publication Date: 2014-02-12
JDV CONTROL VALVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the anti-leakage ring is asymmetrical to the radial circle formed by its axis, it is quite difficult to manufacture, and there will be directional problems

Method used

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  • Three-eccentric valve with symmetric leakage stop ring
  • Three-eccentric valve with symmetric leakage stop ring
  • Three-eccentric valve with symmetric leakage stop ring

Examples

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Example Embodiment

[0032] With regard to the structural composition of the present invention, the effects and advantages that can be produced, and the drawings, a preferred embodiment of the present invention is described in detail as follows.

[0033] Please refer to Figure 1 to Figure 4 As shown, the triple eccentric valve of the present invention includes the following components:

[0034] A valve body 1, the inner ring wall of the valve body forms a valve chamber 10; a valve seat 30 is accommodated in the valve chamber 10; the valve seat is slightly annular, and the radial cross section of the valve seat is trapezoidal . In the present invention, the valve seat is a detachable structure.

[0035] A valve stem 2, the valve stem penetrates the valve body 1, and the top of the valve stem can be connected with a valve operator (not shown in the figure) for driving the valve body to rotate, so that the valve body can be selectively Open or close the pipe diameter through hole.

[0036] A valve member ...

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PUM

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Abstract

The invention relates to a three-eccentric valve with a symmetric leakage stop ring. The three-eccentric valve comprises a valve body, a valve piece and the leakage stop ring, wherein opening and closing of the valve piece can control the flow of a passing fluid; the valve piece forms an asymmetric cone shape, in which two extension lines formed at the upper and lower lateral margins are asymmetric, the slope factor (absolute value), relative to the center line of the valve piece, of the extension line at the upper lateral margin is greater than that (absolute value), relative to the center line of the valve piece, of the extension line at the lower lateral margin; the two inclined lines extend towards the left side to form a crossing point, and the distance between the crossing point and the center line of the valve body is not larger than the semidiameter of the valve piece; the leakage stop ring is an O-shaped ring and is accommodated on the outer side of the valve piece to prop against a valve seat; the leakage stop ring is radially symmetric about the axis passing through the center of the leakage stop ring.

Description

technical field [0001] The invention relates to a valve body, especially a triple eccentric valve with a symmetrical non-leakage ring. Background technique [0002] In the prior art, there is a butterfly valve. The butterfly valve includes a shaft hole passing through in the radial direction for a driving shaft to be inserted to drive the butterfly valve to rotate to open or close the valve. It is designed with three eccentric shafts. Such as Figure 8 Shown is a triple eccentric valve in the prior art, wherein the valve includes: a valve body, the valve body has a valve chamber; a valve stem, the valve stem penetrates the valve body. A valve seat 30' is accommodated in the valve chamber. An anti-leakage ring 32', the anti-leakage ring 32 is an O-ring, and the two ends of the radial section of the anti-leakage ring 32 are asymmetrical. A valve part 31', the valve part 31' is arranged on the valve seat 30', the valve part 31' is provided with a shaft hole in the axial direc...

Claims

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Application Information

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IPC IPC(8): F16K1/22F16K1/38
CPCF16K1/22F16K1/222F16K1/2261F16K27/0218
Inventor 范义明
Owner JDV CONTROL VALVES
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