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High viscosity gear pump check valve, safety valve and suction port
Non-return valve and safety valve: a check valve is installed on the output pipeline of the gear pump so that the liquid in the system will not flow backwards when the pump and the output pipeline are under inspection. When the gear pump is under a parking with load, A partial vacuum is created to prevent the pump from turning over. High viscosity gear pump outlet pipe also set safety valve and other protective devices, so once the pump outlet channel blockage, you can open the safety valve pressure relief. The safety valve can be cast in one piece with the pump body or pump head and can also be assembled separately. Suction and discharge port: High viscosity gear pump suction port diameter is generally larger, sometimes using diffusion-type suction port to expand the volume of low-pressure zone to reduce the inlet liquid flow rate and reduce the pump suction resistance. This structure can also reduce the radial force on the journal and bearings to extend the service life of high viscosity gear pump.