Black-flow preventer valve in pipeline

An anti-backflow and valve technology, applied in the direction of valves, etc., can solve the problems of affecting the thickness of the pipeline, no anti-backflow, and insufficient smooth flow of liquid or gas, and achieve the effect of simple structure
CN102989083AInactive Publication Date: 2013-03-27δΊŽη§€ζœˆ +2
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
δΊŽη§€ζœˆ
Publication Date
2013-03-27
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a back-flow preventer valve in a pipeline. The back-flow preventer valve in the pipeline comprises a pipe body and valves, wherein the valves are arranged in a pipe cavity. Two valves are designed in the pipe cavity, the width of the middle parts of the valves is greater than the radius of the pipe cavity, and is 1.5-2.5 times the radius of the pipe cavity; the root parts of the valves are thicker than other parts, are arc-shaped and connected with the inner wall of the pipe cavity; free edges of the upper valve and the lower valve face towards the flow direction of the fluid; the valves are light films with elasticity and toughness; and the pipe body is transparent, and the two valves are provided with different colors. The back-flow preventer valve in the pipeline has the advantages that: 1, the two valves are simple and practical, satisfy biomechanics, and can be arranged at a plurality of positions in the same pipe body; 2, down-flow is not affected when the back-flow is prevented; 3, convection of liquid and gas in a drainage pipeline is prevented; and 4, the structure of the pipeline is not affected when the back-flow preventer valve is widely applied to any part of various pipe cavities and pipelines in medical science or non-medical life.
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Description

technical field

[0001] The invention relates to a technique for preventing reflux in a pipeline, in particular to a valve for preventing reflux in a pipeline used in medical treatment. Background technique

[0002] The opening and closing parts are opened or closed by the medium flow and force to prevent the medium from flowing backward. The valve is called a check valve. The check valve is also called a one-way valve or a check valve. On the pipeline that flows downward, the medium is only allowed to flow in one direction to prevent accidents. According to the structure, the check valve can be divided into three types: lift check valve, swing check valve and butterfly check valve. Its disadvantages are: 1. The structure is more complicated; 2. It is only suitable for hard pipes, and the application is not wide enough; 3. It is necessary to overcome the gravity of the anti-reflux flap when flowing downstream; 4. It affects the thickness of the pipe; 5. It is difficult to in...

Claims

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