Mechanical seal self-circulation flushing device for slurry pump

Abstract

The invention relates to the technical field of mechanical engineering pumps, in particular to a mechanical seal self-circulation flushing device for a slurry pump. The mechanical seal self-circulation flushing device for the slurry pump is provided with a pump frame and a pump body, and is characterized by being provided with a circulating water tank and a water tank bracket, wherein a water inlet connecting pipe and a water outlet connecting pipe are arranged on the pump body; the circulating water tank is arranged above the pump body; the lower end of the circulating water tank is fixed on the pump frame by the water tank bracket; a water inlet and a water outlet are formed in the side wall of the circulating water tank; one end of the water inlet connecting pipe is connected with the water inlet of the circulating water tank, and the other end is connected with a water inlet hole in the pump body; and one end of the water outlet connecting pipe is connected with the water outlet of the circulating water tank, and the other end is connected with a water outlet hole in the pump body. As the structure is adopted, the mechanical seal self-circulation flushing device for the slurry pump has such advantages as simple structure, convenience for installation, energy conservation, consumption reduction and high reliability.

Description

technical field [0001] The invention relates to the technical field of mechanical engineering pumps, in particular to a mechanical seal self-circulation flushing device for a slurry pump. Background technique [0002] We know that the shaft seal component is an important device used to prevent the leakage of liquid in the pump and the entry of air outside the pump, and its reliability directly affects whether the centrifugal pump can operate normally. Common seals are divided into mechanical seals and packing seals. Mechanical seals are widely used due to their good sealing effect, less loss, less leakage, and long life. Since the sealing surface of the mechanical seal will generate heat during operation, in order to prevent sealing Dry operation increases the life of the mechanical seal, and the mechanical seal needs to be flushed. Compared with clean water centrifugal pumps, the working conditions of slurry pumps are more complicated, and the medium they transport is all...

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Problems solved by technology

Compared with the clean water centrifugal pump, the working condition of the slurry pump is more complicated, and the medium that is conveyed contains impurities. The mechanical seal cannot be self-flushed by the conveying medium, and the external clean water is used for flushing. However, under many working conditions, clean water resources are not sufficient. Sufficient or no clean water can be used for flushing, which brings difficulties to the operation of the slurry pump

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