Air pressure overload protection device

Abstract

The invention discloses a protection device, and aims to provide an air pressure overload protection device, which is simple in structure, realizes real-time monitoring and is capable of running fully automatically. The air pressure overload protection device is arranged on a main air pipe (9) and comprises a box (1), an electromagnetic valve (2), an adjustable pressure switch (3), a time relay (4), an intermediate relay (5) and a pressure gauge (6), wherein the time relay (4) is electrically connected with the electromagnetic valve (2), the adjustable pressure switch (3) is arranged on the main air pipe (9) and electrically connected with the time relay (4), the pressure gauge (6) is communicated with the adjustable pressure switch (3), the intermediate relay (5) is electrically connected with the time relay (4), and both the adjustable pressure switch (3) and the time relay (4) are communicated with a peripheral circuit. The air pressure overload protection device can be widely applied to the field of air compressor control.

Description

technical field [0001] The invention relates to an air pressure overload protection device. Background technique [0002] In production, many equipments use compressed air as the driving source, and the pressure limit switch of the air compressor that generates compressed air occasionally fails due to frequent actions, so that the air compressor cannot be unloaded normally, and the compressed air pressure exceeds the limit pressure. value, resulting in a security risk. In view of this situation, it is usually used to install a safety valve to relieve pressure. However, because the pressure relief flow of the safety valve is too small, it is impossible to unload the air compressor to reduce the pressure value and relieve the hidden danger. Therefore, a new practical technology needs to be adopted. to solve the above problems. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and p...

AI Technical Summary

Problems solved by technology

[0002] During work and production, many devices use compressed air as the driving source, and the pressure limit switch of the air compressor that generates compressed air occasionally fails due to frequent actions, so that the air compressor cannot be unloaded normally, and the compressed air pressure exceeds the limited pressure value, resulting in security risks

In view of this situation, it is usually to install a safety valve to relieve the pressure, but because the pressure relief flow of the safety valve is too small, it is impossible to unload the air compressor to reduce the pressure value and eliminate the safety hazard, so a new practical technology is required to solve the above problems

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