Method and device for self-circulation cooling of mechanical seal of emulsified liquid lift pump

Abstract

The invention relates to a method and a device for self-circulation cooling of a mechanical seal of an emulsified liquid lift pump. The mechanical seal comprises a dynamic ring which rotates with a pump shaft and a static ring which is in contact seal with the dynamic ring, wherein the dynamic ring and the static ring form an external seal space. The device for self-circulation cooling of the mechanical seal of the emulsified liquid lift pump comprises a high temperature area, a low temperature area, a temperature difference circulation pipeline, and a controllable pressure air channel, wherein the high temperature area is formed by a seal space to form a mechanical seal radiating area, the low temperature area comprises a totally closed jacket type cooler, the temperature difference circulation pipeline is connected with the high temperature area and the low temperature area, and the controllable pressure air channel is connected with the cooler. According to the method and the device, purposes of low water consumption, automatic cycle, good cooling effects and avoidance of environment pollution are achieved; abnormities can be timely found to guarantee device safety; the mechanical seal is more reliable, service life of the mechanical seal is effectively prolonged, and device maintenance expenses and time are reduced.

Description

technical field [0001] The invention relates to a mechanical seal of a fluid delivery pump, in particular to a cooling method and device for a delivery pump of high-temperature, high-pollution medium. Background technique [0002] The waste emulsion lifting pump is a high-speed centrifugal pump, which is mainly used for the treatment of waste emulsion. In the wastewater treatment of the factory, the waste emulsion is usually sent to the advection grease trap first, and the oil and water are separated by gravity, and the separated wastewater is transported to the subsequent treatment process through the waste emulsion lifting pump. In order to prevent leakage, the sealing of the waste emulsion lift pump during operation is particularly important, and the key is that the medium cannot leak along the axial direction. The axial seals of existing centrifugal pumps are roughly divided into labyrinth seals, packing seals and mechanical seals. The leakage of labyrinth seal is larg...

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Problems solved by technology

However, its internal circulation is very small, which is not conducive to the timely discharge of high-temperatu

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