Descaling system

Abstract

The invention provides a descaling system. The descaling system at least comprises a water inlet descaling system, wherein the water inlet descaling system comprises a water filter, a cold water pond, a centrifugal pump, a limescale removing instrument and a first water softening device which are connected with one another sequentially through pipelines; an inlet of the water filter is connected with a water source; an outlet of the water filter and an inlet of the centrifugal pump are communicated with the cold water pond; an outlet of the centrifugal pump is connected with an inlet of an automatic removing instrument; an inlet of the first water softening device is connected with an outlet of the limescale removing instrument; and an outlet of the first water softening device is connected with a water inlet of a water ring vacuum pump. Water is supplied to the vacuum pump after three-stage descaling is finished, the vacuum pump maintains economic and high-efficiency operation, scale formation is avoided basically, and the process of descaling by manual acid washing is reduced, so labor cost and maintenance cost are reduced, the service life of the vacuum pump is prolonged, continuous operation of the vacuum pump is maintained, continuous extraction of a mine is realized, the condition of abnormal gas at the underground extraction place or suspend production of a working surface caused by haul and termination of the pump is avoided, and powerful guarantee is provided for safe and high-efficiency recovery of the mine.

Description

technical field [0001] The invention relates to a scale treatment technology of a mine gas drainage pump, in particular to a scale removal system. Background technique [0002] At present, coal mines usually use water ring vacuum pumps for gas extraction. The common feature of vacuum pump work is that when the impeller rotates in a specified direction, the working circulating water forms a water ring that rotates with the impeller on the inner wall of the pump. During the rotation of the impeller, the volume of the closed space formed by the blade and the water ring expands or shrinks. The vacuum pump sucks and exhausts work. The radial and end clearances of this type of pump are relatively small, and the impeller is easily stuck by the impurities or scale mixed in the working water during operation and forced to stop. In particular, two distributors are added to this series of vacuum pumps, and the gaps between each part are small, so it is more likely to be stuck by impu...

AI Technical Summary

Problems solved by technology

The radial and end clearances of this type of pump are relatively small, and the impeller is easily stuck by the impurities or scale mixed in the working water during operation and forced to stop

In particular, two distributors are added to this series of vacuum pumps, and the gaps between each part are small, so it is more likely to be stuck by impurities in the working circulating water or scale generated during the operation of the vacuum pump, causing shutdown, and the direct consequence will be that the mine gas cannot be extracted normally. , threaten mine safety and restrict coal mine production

[0003] Due to the high hardness of the water in the mining area, the circulating water used for gas drainage in the past has no related descaling system, so the pump body and related inlet and outlet, drainage and exhaust pipelines are seriously scaled, and there are abnormalities such as excessive running resistance and increased current. Phenomenon, leading to the stop of the drainage pump, which will inevitably affect the normal gas drainage in the well. The method of pickling is usually used for descaling, but the descaling effect is not good, which consumes a lot of manpower and material resources, and manual pickling is easy to damage the drainage pump. Damage caused, difficult to descale

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