Internal one-way valve

Abstract

The invention provides an internal one-way valve. The internal one-way valve comprises a valve body, a valve element and a clamp spring. An inlet channel, a neck channel, a throat channel and an outlet channel which are sequentially connected are arranged in the valve body. The inner wall, corresponding to the throat channel, of the valve body is an oblique conical face. The inlet channel, the neck channel, the throat channel and the outlet channel are concentric. The valve element comprises a valve element head, a valve element tail and a middle connection section. An annular internal seal groove is formed in the middle connection section. An annular clamp spring clamping groove is formed in the inner wall of the tail end of the outlet channel. The clamp spring is arranged in the clamp spring clamping groove. An inlet fluid pressure-bearing face is arranged on the valve element head, and an outlet fluid pressure-bearing face is arranged on the valve element tail. The internal one-wayvalve can be independently mounted and can also be mounted in a connecting piece body, so that the equipment space is saved, and the equipment weight is reduced; and the internal one-way valve can reciprocate and slightly deflect in the flowing direction of fluid in the channels and can also rotate, so that the resistance of the fluid is greatly reduced; and the noise is low, and the structural strength is high.

Description

technical field [0001] The invention belongs to the field of mechanical equipment, in particular, a built-in check valve is designed. Background technique [0002] With the rapid development of science and technology, all walks of life have higher and higher requirements for the miniaturization and compactness of mechanical equipment. There are often multiple bifurcated flow channels inside a mechanical equipment, or even multiple fluid media. It is hoped that the medium will flow in the desired flow direction under different conditions. Due to the disorder of fluid movement, it is necessary to add a one-way valve in the flow channel to limit the flow direction of the fluid and prevent the occurrence of fluid cross-flow and reverse flow. Especially in the small equipment that needs to prevent the reverse flow of the medium, but the pressure does not exceed 20MPa, and the fluid medium is not strongly corrosive, it is necessary to add a check valve, such as in the pipeline of...

AI Technical Summary

Problems solved by technology

The one-way valve on small equipment is generally composed of valve body, piston valve body, and fixed valve seat, and has many parts. Considering factors such as leakage, vibration, noise, pressure resistance, and temperature change, the production process The requirements are relatively high, the tolerance precision of each part is high, and it takes up a lot of space at the same time

For a small module containing a one-way valve and limited space size, it not only increases the cost and weight, but also limits the size and installation location of other components, especially in small equipment with limited space, such as automotive air conditioners, aircraft, satellites Equal cooling system, the impact of the check valve volume on the equipment is more serious

[0004] In addition, the existing one-way valve suitable for small equipment modules also has the defect of high manufacturing cost

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