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Check valve for preventing backflow

A technology of one-way valve and spool, applied in the direction of control valve, valve device, function valve type, etc., can solve the problems of high cost and difficult maintenance, and achieve the effect of reducing the conditions of use, cost and accuracy

Inactive Publication Date: 2018-08-28
成都神智电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The check valve in the prior art usually adopts a hydraulic method when the spring is compressed, but the hydraulic method requires high precision and high requirements, and has high requirements on the valve body, resulting in high cost and difficult maintenance

Method used

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  • Check valve for preventing backflow

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Experimental program
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Effect test

Embodiment

[0018] like figure 1 As shown, the one-way valve used to prevent backflow includes a valve body, a spring seat 1, a spring 2, a one-way valve body 3, a valve core 4, a valve core base 5, a fluid inlet 6, a fluid outlet 7, a closing rod 8, Valve core base air hole 9, the first layer of sealing ring 10, the valve body includes a cylindrical channel and a check valve body 3, the check valve body 3 is a cylindrical cavity, the cylindrical channel One end is seamlessly connected with one end of the cylindrical cavity, the spring seat 1 is arranged at the other end of the cylindrical cavity connecting the cylindrical passage end, the fluid inlet 6 is arranged outside the spring seat 1, and the spring The middle part of the seat 1 is hollow and communicates with the fluid inlet 6; the fluid outlet 7 is a cylindrical channel connected to the other end of the cylindrical cavity end; the valve body base 5 is arranged on the cylindrical channel connected to the cylindrical cavity The en...

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PUM

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Abstract

The invention discloses a check valve for preventing backflow. The check valve comprises a valve body, a spring seat, a spring, a check valve body, a valve element, a valve element base, a fluid inlet, a fluid outlet, a closing rod, a valve element base vent hole and a first-layer sealing ring, wherein the valve body comprises a cylindrical channel and the check valve body, the check valve body isa cylindrical cavity, and one end of the cylindrical channel is in seamless connection with one end of the cylindrical cavity; and the spring seat is arranged at the other end, connected with the other end of the cylindrical channel, of the cylindrical channel, the fluid inlet is formed in the outer part of the spring seat, and the middle of the spring seat is hollow and communicates with the fluid inlet. According to the check valve, a hydraulic system used in the traditional technology is replaced by the closing rod and the spring, and therefore the cost is reduced, the precision of the valve body is reduced, the use condition of the check valve is reduced, and the check valve can be suitable for more fields.

Description

technical field [0001] The present invention relates to valves, in particular to check valves for preventing backflow. Background technique [0002] The one-way valve is that the fluid can only flow along the water inlet, but the outlet medium cannot flow back, commonly known as a one-way valve. One-way valve is also called check valve or check valve. Used in hydraulic systems to prevent reverse flow of oil flow, or used in pneumatic systems to prevent reverse flow of compressed air. There are two types of check valves, straight-through and right-angle. The straight-through check valve is installed on the pipeline with a threaded connection. There are three types of right-angle check valves: threaded connection, plate connection and flange connection. [0003] One-way valve is also called check valve or check valve. Used in hydraulic systems to prevent reverse flow of oil flow, or used in pneumatic systems to prevent reverse flow of compressed air. There are two types ...

Claims

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Application Information

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IPC IPC(8): F16K15/02
CPCF16K15/025
Inventor 王天鑫
Owner 成都神智电子科技有限公司
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