Self-piloting damping vacuum diaphragm valve

Abstract

The invention provides a self-piloting damping vacuum diaphragm valve, and belongs to the technical field of vacuum diaphragm valves. The self-piloting damping vacuum diaphragm valve comprises a diaphragm chamber, an upper diaphragm chamber and an intermediate diaphragm chamber, wherein the top part of an upper housing is connected to atmosphere or a vacuum system; a vacuum channel, a damping channel and at least one atmosphere channel are arranged at the bottom part of an intermediate housing; a damping block is arranged at an outlet in the upper end of the damping channel in a covering, resisting and connecting manner; an intermediate diaphragm sheet is compressed to the inner wall of the bottom part of the intermediate housing through the damping block, and the intermediate diaphragm sheet fits an end port of the atmosphere chamber in a covering, resisting and connecting fitting manner; a damping hole is formed in the damping block and communicates with the damping channel; a connecting rod is arranged in the middle of the intermediate housing; the top part of the connecting rod is fixedly connected to the upper diaphragm sheet; the connecting rod is in penetrating fitting witha through hole in the middle part of the damping block; a valve sheet is fixedly arranged at the bottom part of the connecting rod and fits an outlet of the vacuum channel in a covering, resisting andconnecting manner; the other end of the vacuum channel is connected to a check valve, and the other end of the check valve is connected to the vacuum end. The self-piloting damping vacuum diaphragm valve is delayed to open and close, so that sewage can be completely and cleanly pumped; and the device is stable and reliable to use.

Description

technical field [0001] The invention belongs to the technical field of vacuum blowdown, in particular to a self-leading damping vacuum diaphragm valve. Background technique [0002] In the field of vacuum sewage, the flow speed of the medium is fast, and the response speed of the diaphragm greatly affects the sealing performance of the pipeline and the control of flow noise. The diaphragm valve is used in the vacuum field, which is a relatively new application. There is no diaphragm valve specially used in the vacuum field. The valve opens too fast, the noise is loud, and the valve closes too fast to ensure that the pumping is completely clean. There is an urgent need for a diaphragm valve with controllable opening and closing delay functions. Contents of the invention [0003] In view of the above-mentioned problems existing in the prior art, the object of the present invention is to design and provide a technical solution for a self-guided damping vacuum diaphragm valve,...

AI Technical Summary

Problems solved by technology

[0002] In the field of vacuum sewage, the flow speed of the medium is fast, and the response speed of the diaphragm greatly affects the sealing performance of the pipeline and the control of flow noise. The diaphragm valve is used in the vacuum field, which is a relatively new application. There is no diaphragm valve specially used in the vacuum field.

The valve opens too fast, the noise is loud, and the valve closes too fast to ensure that the pumping is completely clean. There is an urgent need for a diaphragm valve with controllable opening and closing delay functions.

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