Elastic rubber type check valve for multi-dust environment

Abstract

The invention relates to an elastic rubber type check valve for a multi-dust environment, which comprises a valve body, a valve core and an elastic rubber tube, wherein a cavity is arranged inside the valve body, one end of the valve body is provided with a mounting hole which is communicated with the cavity, and the other end of the valve body is provided with an output port which is communicated with the cavity; the front end part of the valve core is protruded from the mounting hole into the cavity of the valve body, the mounting hole of the valve body is blocked, and the valve core is provided with an air current channel; an inlet of the air current channel is located at the tail of the valve core, and an outlet of the air current channel is located at the front end part; and the elastic rubber tube is sleeved at the front end part of the valve core so as to block the outlet of the air current channel. The elastic rubber type check valve for the multi-dust environment is reliable in work, better in tightness, lower in cost, and liable to maintain.

Description

1. Technical field [0001] The invention relates to an elastic hose type one-way valve used in a dusty environment. 2. Background technology [0002] There are generally two types of traditional check valve structures, as follows: [0003] The first one-way valve structure such as figure 1 , figure 2 As shown, it includes a valve body 1, a valve core 2, a valve cover 3, a gasket 4, a spring 5 and an O-ring 6, a cavity 11 is set inside the valve body 1, an output port 12 is set at one end of the valve body 1, and the other end is installed The valve cover 3 seals one end of the cavity 11. The valve cover 3 is provided with an air flow channel 31 to communicate with the cavity 11. A gasket 4 is installed on the valve core 2. The valve core 2 and the spring 5 are placed in the cavity 11. The spring 5 One end is against the inner wall of the cavity 11 , and the other end of the spring 5 is pressed on the valve core 2 , so that the gasket 4 on the valve core 2 blocks the air f...

AI Technical Summary

Problems solved by technology

[0005] Disadvantages of the above-mentioned one-way valve: due to the use of mechanical seal valve core and valve inner cavity, there will be jamming phenomenon, and factors such as spring elasticity will affect the sealing performance. When compressed air enters the output port, it will be output at the input and input ports. It does not have the function of one-way conduction; when used in a dusty environment, the powder will enter the inner cavity of the valve core from the output port, and the accumulation of powder in the inner cavity of the valve core will hinder the elongation and compression of the spring, which will cause the valve core to collapse. Difficult to open or close, can not play the role of a single conduction, and the powder will damage other equipment connected to the input port

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