One-way valve with filtering function

A technology of one-way valve and function, applied in the direction of function valve type, filter separation, fixed filter element filter, etc., it can solve the problems of rising opening pressure, non-metallic valve core adhesion, etc., to solve adhesion and improve overall air tightness performance, low flow resistance

Pending Publication Date: 2022-04-08
SHENYANG AEROSPACE XINGUANG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After long-term storage, the non-metallic valve core sticks, which easily leads to an increase in opening pressure

Method used

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  • One-way valve with filtering function

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Embodiment Construction

[0010] Such as figure 1 As shown, the one-way valve of the present invention includes the inlet nozzle 1, the housing 7 and the outlet nozzle 4 connected by welding in sequence, and the overall outer contour is welded and formed, and the airtightness is better.

[0011] A filter 9 is installed in the inlet nozzle 1, and after the inlet nozzle 1 presses the filter 9, it is welded with the casing 7 to form a casing assembly, and the casing assembly is connected with the outlet nozzle 4 by welding; the filter 9 is oval Hemisphere, the top of the filter opens towards the inlet nozzle 1, the circular edge of the rear end of the filter is clamped and compressed by the rear end of the inlet nozzle 1 and the front end of the housing 7, and the elliptical profile of the filter 9 can effectively reduce the Flow resistance, the inlet flow channel in the inlet nozzle 1 is trumpet-shaped, the front end is closed, and the cross-section gradually expands backwards. The streamlined design of ...

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Abstract

The one-way valve with the filtering function comprises an inlet pipe nozzle, a shell and an outlet pipe nozzle which are sequentially connected in a welded mode, a filter is installed in the inlet pipe nozzle and is an elliptical hemisphere, and the top end of the filter faces an opening of the inlet pipe nozzle. The round edge of the rear end of the filter is clamped and pressed by the rear end of the inlet pipe nozzle and the front end of the shell, a valve element assembly is arranged in the shell, a conical surface inner hole is formed in the front end of the shell, the conical surface inner hole is matched with the valve element assembly, and a non-metal coating is arranged on the conical surface inner hole. According to the one-way valve, the flow resistance is reduced, and the overall air tightness is improved; the chatter problem is avoided; the guide disc can adjust various opening pressures; the non-metal coating on the conical surface of the valve port reduces the long-term adhesion degree of the valve element and is suitable for fluid control.

Description

technical field [0001] The invention relates to the technical field of fluid control, in particular to a one-way valve with filtering function. Background technique [0002] Check valves are generally used to control a single flow direction of fluid. That is, the fluid flows in from the inlet of the one-way valve and flows out from the outlet of the one-way valve. When the fluid flows in from the inlet, the pressure is greater than the pre-tightening force of the spring acting on the valve core, and the valve core is opened to allow fluid to pass through. When the fluid flows in from the outlet, the valve core is compressed and sealed with the valve port under the action of the spring, and the fluid flow is blocked in the reverse direction. [0003] In the prior art, the inlet filter is affected by the flow channel and the flow area, and the flow resistance is relatively large. The overall structure is in the form of threaded connection, and the airtightness is not good, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/06B01D29/01B01D29/00B01D35/04
Inventor 曹丽平于文泉贾强王天舒王禹涧吕梦璐
Owner SHENYANG AEROSPACE XINGUANG GRP
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