Suspension body of hot water circulating pump provided with groove structure on inner wall surface

Abstract

The invention relates to a suspension body of a hot water circulating pump provided with a groove structure on an inner wall surface. The suspension body comprises a suspension body, a shaft sleeve, a pump spindle, a guide bearing and an annular radiating fin, wherein rectangular grooves which are identical in structure and size are machined on the inner wall surface of the suspension body, heat transfer of fluid in an annular gap formed by the suspension body and the pump spindle is enhanced, the heat of a high-temperature medium is transferred to the ambient environment effectively, the annular radiating fin is arranged on the periphery of the outer wall surface of the suspension body, the heat of the high-temperature medium transmitted to the suspension body is transmitted into the ambient air, and the heat of the high-temperature fluid in a pump body cannot be transmitted to a mechanical seal and a bearing which are arranged behind the pump body, through the suspension body. When the hot water circulating pump works, an impeller operating region with higher temperature and a mechanical seal and bearing working region are separated through the suspension body, so that the heat of the high-temperature medium transmitted to the mechanical seal is insufficient to influence the sealing life, the guide bearing at the front end of the suspension body has a self-lubricating function, and the guide bearing is lubricated by a conveying medium through a groove on the pump spindle. The suspension body, provided by the invention, is used for modifying the conventional hot water circulating pump, thereby realizing air-cooling of the hot water circulating pump.

Description

technical field [0001] The invention relates to a suspension body structure used in pipelines or closed loops in metallurgy, electric power, petrochemical, and waste heat and waste energy utilization systems for circulating pumps that transport high-temperature liquid media. Background technique [0002] In the fields of metallurgy, power station, chemical industry, waste heat and energy, etc., water pumps will be used for hot water circulation in pipelines or closed loops in the system. [0003] Ordinary circulating pumps do not have cooling devices, and their mechanical seals and bearings will not be able to withstand high-temperature media and be damaged. Ordinary circulating pumps cannot meet the conditions of use in conveying high-temperature liquid systems at all, so hot water circulating pumps have a good application prospect. [0004] At present, the water-cooled hot water circulation pump is widely used. The pump uses the circulation of cooling water to isolate the ...

AI Technical Summary

Problems solved by technology

[0003] Ordinary circulating pumps do not have cooling devices, and their mechanical seals and bearings will not be able to withstand high-temperature media and be damaged. Ordinary circulating pumps cannot meet the conditions of use in conveying high-temperature liquid systems at all, so hot water circulating pumps have a good application prospect

[0004] At present, the water-cooled hot water circulation pump is widely used. The pump uses the circulation of cooling water to isolate the temperature of the conveying medium, avoiding the influence of high temperature on the mechanical seal and bearings, so that the circulation pump can maintain stable operation, but this structure There are also potential problems such as insufficient external cooling water and blockage of cooling pipes, which will cause mechanical seals and bearings to operate at high temperatures, causing end face wear and leakage problems

In addition, bearings are installed in the suspension body as the rotor support, which also has the above-mentioned cooling problem

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