Anti-loose structure for connection of spool and valve rod

A valve stem and valve core technology, applied in valve devices, engine components, mechanical equipment, etc., can solve the problems of low assembly efficiency, high valve core processing requirements, and low reliability, so as to improve assembly efficiency and reduce processing difficulty. , the effect of improving reliability

Inactive Publication Date: 2013-04-03
WUZHONG INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] After long-term use, it has been proved that the reliability of such a structure in the pulverized coal delivery valve is not high, the processing requirements for the valve core are high, and the overall assembly efficiency is low.

Method used

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  • Anti-loose structure for connection of spool and valve rod
  • Anti-loose structure for connection of spool and valve rod
  • Anti-loose structure for connection of spool and valve rod

Examples

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Embodiment Construction

[0016] Such as figure 1 As shown, the present invention is an anti-loosening structure in which the valve core and the valve stem are connected, including the valve core 6 and the valve stem 1, and the lock nut 5 is sleeved on the valve stem 1, between the lock nut 5 and the valve stem 1 Threaded connection is adopted, and the lock nut 5 is located between the valve core 6 and the valve stem 1, and a boss cooperating with a step in the valve core 6 is provided under the lock nut 5, and the boss and the valve core 6 A sealing device is installed between the inner steps to prevent the medium from flowing out, specifically a gasket 4 is used.

[0017] It also includes an anti-rotation sleeve 3, the anti-rotation sleeve 3 is set on the lock nut 5 and the valve stem 1 at the same time, and the upper part of the anti-rotation sleeve 3 and the valve stem 1 are locked together by concave-convex fit, and its lower part is connected to the valve stem 1. The cores 6 are also clamped to...

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Abstract

The invention relates to an anti-loose structure for the connection of a spool and a valve rod. The anti-loose structure comprises a spool (6) and a valve rod (1), and is characterized in that the valve rod (1) is sleeved by a locknut (5), and the locknut (5) is positioned between the spool (6) and the valve rod (1); a boss fitted with a step in the spool (6) is arranged at the lower part of the locknut (5); a sealing device is installed between the boss and the step in the spool (6) to prevent medium from flowing out; the anti-loose structure further comprises an anti-rotating sleeve (3); the anti-rotating sleeve (3) is sleeved on the locknut (5) and valve rod (1); and the upper part of the anti-rotating sleeve (3) is stuck together with the valve rod (1) through a concave-convex fit manner, and the lower part of the anti-rotating sleeve (3) is also stuck together with the spool (6) through a concave-convex fit manner. The anti-loose structure for the connection of a spool and a valve rod solves the problems of the connection and the anti-loose of a spool and a valve rod through designing a locked tight component, and can avoid machining a threaded hole or a conical bore in the spool.

Description

technical field [0001] The invention relates to an anti-loosening structure for connecting a valve core and a valve rod. Background technique [0002] Such as Figure 5 As shown, the traditional connection method between the valve core and the valve stem is to process a threaded hole on the valve core and connect it with the valve stem. core and stem. [0003] Long-term use has proved that the reliability of such a structure in the pulverized coal delivery valve is not high, the processing requirements for the valve core are high, and the overall assembly efficiency is low. Contents of the invention [0004] The object of the present invention is to provide an anti-loosening structure connecting the valve core and the valve stem, which can reduce the processing accuracy requirements for the valve core, reduce processing costs and simplify assembly methods. [0005] An anti-loosening structure connecting the valve core and the valve stem, including the valve core and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K51/00
Inventor 马玉山高强李虎生
Owner WUZHONG INSTR
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