A miniature intelligent vacuum and pressurized air source module

Abstract

The invention relates to a miniature intelligent vacuum and pressurization gas source module, which comprises an electric gas pump and a gas source end block, wherein the gas source end block is connected to the electric gas pump, and is communicated to the electric gas pump through a gas path, a first-stage gas suction pipeline for sucking outside gas and a second-stage gas discharging pipeline for outputting pressure gas are arranged in the electric gas pump, the gas source end block is provided with a positive pressure gas capacitor and a vacuum gas capacitor, and the two capacitors are communicated to the two pipelines of the electric pump and are controlled by miniature electromagnetic valves V1, V2 and V3. According to the present invention, the electric gas pump is the pressurization gas pump, the two capacitors of the gas source end block can be used for respectively outputting pressure gas or vacuum to the outside, and the cylinder, the gas capacitors, the gas pipelines, the valves and the like are distributed in the module in the built-in manner, such that the structure is compact, the integrated miniaturized design and the automated control are achieved, and the miniature intelligent vacuum and pressurization gas source module is especially suitable for assembly in miniaturized calibrators.

Description

technical field [0001] The invention belongs to the technical field of pressure instrument inspection, and relates to an integrated air source module, in particular to a miniature intelligent air source module combined with a cylinder-guided miniature booster electric air pump and high-pressure and vacuum multi-head automatic output functions, which is especially suitable for It is used in automatic, miniaturized and highly integrated pressure calibration instruments. Background technique [0002] In the process of calibrating gas pressure gauges with portable pressure calibrating instruments, compressed gas with a certain pressure is required as a medium to calibrate the pressure gauges. There are two main sources of compressed gas in the traditional way: portable hand-operated air pump to pressurize or carry high-pressure gas cylinders. The manual air pump is mainly used in the manual pressure instrument calibration device. In order to complete the normal calibration proc...

AI Technical Summary

Problems solved by technology

In the traditional verification, the vacuuming and compressed gas detection of the meter under test are often completed separately, each using a set of systems, which require manual switching during use, and the operation is cumbersome; there are also pressure calibration instruments that combine two functions. There is an externally connected air pressure source, which provides air pressure and vacuum input to the pressure calibration respectively. The air pressure source and vacuum source equipment provided are relatively large in size. Sometimes manual pressure sources are used to manually pressurize to achieve vacuum and high pressure gas, but high pressure and vacuum Switching needs to be completed by manually switching the inlet and outlet ports of the pump body, and there is no vacuum and air pressure storage device, the pressure of the provided air source fluctuates greatly, and automatic control and intelligent management cannot be realized

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