Multifunctional mechanical sealing axle sleeve

Abstract

The present invention relates to a multi-functional mechanical sealing shaft sleeve. A totally enclosed rotating porous internal cooling flow channel which is processed in the shaft sleeve is integrated with a vane wheel and communicated with the negative pressure area of a pump and the internal joint between a mechanical sealing moving ring and a mechanical sealing static ring. When the pump operates, working medium flows from the internal joint between the mechanical sealing moving ring and the mechanical sealing static ring to the negative pressure area of the pump for cooling, bringing away impurities in the sealing inner circle and effectively preventing the medium from leaking out at the same time. Thereby, the multi-functional mechanical sealing shaft sleeve not only resolves the problem of the cooling problem of an external mounted mechanical pump seal but also prevents the toxic medium in the pump and flammable and explosive gas from leaking out, and moreover, an external cooling device is not needed.

Description

Technical field [0001] The invention relates to the cooling and leakage technology of mechanical seals for pumps. This technology solves the cooling and leakage problems of the pump mechanical seal. It can effectively solve the leakage of toxic media and flammable and explosive gases in pump products. Background technique [0002] At present, the known mechanical seal shaft sleeves can only protect the pump shaft and slow down corrosion. The cooling of the mechanical seal can only be done by peripheral devices. In this way, the external working pressure of the seal is always proportional to the outlet pressure of the pump. For positive pressure, leakage is always inevitable, and often causes waste of raw materials and environmental pollution. In severe cases, it will endanger the safety of people and equipment. It is a pump product. The biggest problem and technical difficulty. Contents of the invention [0003] In order to overcome the above-mentioned technical diffic...

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Problems solved by technology

In this way, the external working pressure of the seal is always proportional to the outlet pressure of the pump. For positive pressure, leakage is always inevitable, and often cau...

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