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Reversing valve with small torque

A reversing valve, small torque technology, applied in multi-way valves, valve devices, engine components, etc., can solve problems such as unreliable starting and large starting torque

Inactive Publication Date: 2005-08-17
王旭宁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the movable spool and fixed spool of this kind of reversing valve remain static and do not rotate for a long time under the action of pressure, a large starting torque will be required to rotate the movable spool, especially for motors or motors. Electromagnetic mechanism drives this kind of reversing valve. After a long period of static time, due to excessive starting torque, it is easy to cause unreliable starting.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] A small torque reversing valve of the present invention comprises a valve body and a moving valve core and a fixed valve core in close contact. and other materials to manufacture fixed spools of small torque reversing valves. The tight contact surface of the movable spool and the fixed spool can be flat or curved such as a cone.

Embodiment 2

[0009] A small torque reversing valve of the present invention comprises a valve body and a moving valve core and a fixed valve core in close contact. and other materials to process and manufacture the moving spool of the small torque reversing valve. The tight contact surface of the movable spool and the fixed spool can be flat or curved such as a cone.

[0010] In particular, the small-torque reversing valve of the present invention is made of food grade polytetrafluoroethylene and is suitable for manufacturing equipment such as soybean milk, beverages, and cooking oil; it is made of medical grade polytetrafluoroethylene and is suitable for pharmaceutical manufacturing equipment.

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PUM

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Abstract

This invention relates to a small torque changeover valve, which comprises valve, tightening dynamic valve core and static valve core one of which is made of politef materials. The invention uses the characteristics of the stainless steel, tungsten alloy and ceramics, which lowering the pressure on the dynamic valve core to ensure the sealing demands of the dynamic and static valves and to lower the resistance torque of the dynamic and static valve cores when in starting to realize the dynamic valve core of small torque.

Description

Technical field [0001] The invention relates to a low-torque reversing valve, in particular to the application of the valve core material of the reversing valve. Background technique [0002] The existing type of reversing valve includes a moving spool and a fixed spool in close contact. The material of the moving spool and the fixed spool is generally stainless steel, tungsten alloy or ceramics. The positional relationship between the moving spool and the fixed spool is changed by rotating the moving spool. To achieve the purpose of changing the fluid flow path. In order to prevent the fluid from flowing out from the contact surface of the driven spool and the fixed spool, in addition to requiring the contact surface of the movable spool and the fixed spool to be fully bonded, it is also necessary to apply a large pressure on the movable spool to make the dynamic The spool and fixed spool are in closer contact. If the movable spool and fixed spool of this kind of reversin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K11/074
Inventor 王旭宁朱泽春尉迟延敏左奉辉
Owner 王旭宁
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