a leakage valve

Abstract

The invention discloses a leakage speed valve, and relates to the field of leakage speed valves. The leakage speed valve consists of a front cover, a back cover and an air leakage stabilizing part, wherein the front cover is provided with a front end and a back end, the front end of the front cover is connected with equipment requiring air leakage, the back end of the front cover is connected with the back cover, the interior of the front cover is provided with an air passage which penetrates through the front end and back end of the front cover, the back cover is provided with a front end surface and a back end surface, and is also provided with an air leakage hole and an installation hole, the air leakage hole penetrates through the front end surface and back end surface of the back cover, the installation hole is used for installing the air leakage stabilizing part and axially penetrates through the front and back parts, the front end surface of the back cover is provided with an air leakage groove, the air leakage groove is communicated with the air leakage hole, the air leakage stabilizing part is an elastic part, and consists of a handle and a conical air leakage blade, one end of the handle is fixedly connected with the top point of the air leakage blade, and the handle is vertical to the air leakage blade. The leakage speed valve has the advantages that the air leakage speed is stable, and the production and processing are simple.

Description

technical field [0001] The invention relates to the field of leak rate valves, in particular to a leak rate valve capable of stably leaking air. Background technique [0002] With the rapid development of economic level, people pay more and more attention to health. As a tool for measuring blood pressure, electronic sphygmomanometer is also more and more widely used by people. As a key component in the electronic sphygmomanometer, the leak rate valve has a very important influence on the measurement accuracy of the electronic sphygmomanometer. [0003] There are roughly two working principles of the existing leak rate valves in electronic sphygmomanometers: [0004] The first is to make a cut on the U-shaped soft silicone core, and use external force to make the cut open and control the size of the opening to achieve the purpose of controlling the leak rate of the leak rate valve; [0005] The second is to directly use laser drilling on the hard air leakage control part, ...

AI Technical Summary

Problems solved by technology

[0007] The air leakage rate of the first type of leakage rate valve is relatively stable, but the technology required for processing and debugging is high and the air leakage rate is easily changed by the variation of the U-shaped silica gel core;

[0008] Although the production and processing of the second leakage rate valve is simple, the leakage rate is relatively unstable and fluctuates greatly.

Images