Fatigue testing machine for rubber diaphragm

Abstract

The invention discloses a fatigue testing machine for a rubber diaphragm. The fatigue testing machine comprises a bracket platform, a bottom support, a diaphragm, a pressing block and a booster pump,a bayonet is formed in the surface of the bracket platform, the diaphragm is arranged above the bayonet, the bottom support is connected with the bayonet and located below the diaphragm, the diaphragmis in sealed connection with the bottom support, an air inlet and an air outlet are formed in the bottom support, the booster pump is connected with the air inlet through an air inlet pipe, the air outlet is connected with an air outlet pipe, the air inlet pipe and the air outlet pipe are controlled by a control valve to be connected or disconnected, and the pressure block is placed above the diaphragm. Motion control over the diaphragm is achieved through inflation and deflation, resistance borne by the diaphragm is established through the pressing block, mechanical transmission is reduced,fatigue damage to the whole equipment is reduced, stable operation of the equipment is guaranteed, and the service life of the testing equipment is prolonged.

Description

technical field [0001] The invention relates to the technical field of rubber diaphragm testing equipment, in particular to a fatigue testing machine for rubber diaphragms. Background technique [0002] The rubber diaphragm is used in the pneumatic actuator of the valve of the automatic pipeline, and the diaphragm often fails due to fatigue due to frequent turning movements. Once the diaphragm fails, the air chamber of the pneumatic actuator cannot build pressure, and the valve stops working, causing The failure of the entire pipeline, especially for the continuous working environment required by nuclear power, chemical industry, water conservancy, etc., will cause significant losses. [0003] The rubber diaphragm is a vulnerable part, and the fatigue strength of the rubber diaphragm often determines the service life of the diaphragm pump after one repair. Therefore, the fatigue strength test of the rubber diaphragm has become one of the most important contents of the produ...

AI Technical Summary

Problems solved by technology

In the prior art, when performing fatigue tests on rubber diaphragms, the usual practice is to simulate the structure of the diaphragm pump and drive the rubber diaphragm through a series of mechanical linkage structures. On the one hand, the mechanical structure is complicated and the cost is high. On the other hand, the mechanical structure will also be fatigued. , reducing the service life of the test equipment

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