Idling protection system for pump

Abstract

The invention discloses an idling protection system for a pump. The system involves a pump cover and a pump case fixedly connected with the pump cover, wherein an impeller is arranged inside the pumpcase, the impeller is connected with a pump shaft, the other end of the pump shaft is connected with a motor, a mechanical seal is arranged on the pump shaft between the impeller and the motor, a mechanical seal cover and a mechanical seal shell fixedly connected with the mechanical seal cover are arranged on one side of the mechanical seal, a mechanical seal cavity is formed between the mechanical seal cover and the mechanical seal shell, a cooling and lubricating medium is injected into the mechanical seal cavity, the mechanical seal cavity communicates with a liquid storage cooling tank, cooling fins are fixed outside the mechanical seal shell, a cooling fan fixedly connected with the pump shaft is arranged at the position matched with the mechanical seal shell, and the cooling fan cancool the cooling fins, so that the cooling lubricating medium inside the mechanical seal cavity is thermally dissipated and cooled. The system has the advantages of being simple in structure, convenient to install and low in use cost.

Description

technical field [0001] The invention relates to the technical field of pumps, in particular to a pump idling protection system. Background technique [0002] A pump is a machine that transports or pressurizes a liquid. It transmits the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. It is mainly used to transport liquids including water, oil, acid and alkali, emulsions and liquid metals. Wait. [0003] In the pump structure, one end of the pump shaft is connected to the power device, and the other end is fixedly connected to the impeller. The impeller is set in the pump body. In order to ensure that the liquid in the pump body does not leak into the power device when the impeller is running, usually between the impeller and the power device There is a mechanical seal between them. When the pump shaft drives the impeller to run idle, the mechanical seal will rub and generate strong heat accumulation, which wil...

AI Technical Summary

Problems solved by technology

[0004] At present, the cooling method for the mechanical seal when the pump is idling is generally an external liquid storage cooling tank and a circulation pump, and the cooling water in the mechanical seal is pressed out by the circulation pump, cooled by the heat exchange coil in the liquid storage cooling tank, and then flows into the mechanical seal. Cool the mechanical seal by means of this method, the installation of the pump is limited by the working conditions of the site, and the cost of using the pump is increased

Images