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Cleaning method of water-circulating system for coal-winning machine

A circulation system and shearer technology, applied in chemical instruments and methods, cleaning methods and utensils, cleaning methods using liquids, etc., can solve problems such as high disassembly and installation costs, difficulty in quantification, and high labor intensity for maintenance personnel. Achieve the effect of convenient descaling method

Active Publication Date: 2009-09-16
CHINA SHENHUA ENERGY CO LTD
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Problems solved by technology

[0003] The above-mentioned descaling method makes the on-site downtime longer, and at the same time the cost of disassembly and installation is higher, and the damage to the body waterway itself is also very serious
In addition, not only the labor intensity of maintenance personnel is high, but also unnecessary waste of cost will be caused. Even after the dredging is completed, the dredging effect is still extremely unstable and difficult to quantify

Method used

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  • Cleaning method of water-circulating system for coal-winning machine

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Embodiment Construction

[0018] see figure 1 , the internal water circulation system of the coal mining machine 14 is connected with the external descaling equipment, thereby forming a new circulation system, to apply the descaling method of the present invention.

[0019] The water outlet 10 of the coal shearer 14 is connected to the first valve 18 through the pipeline 12, and the first valve 18 is connected in series with the second valve 13 through the pipeline 12, and a circulating valve is installed between the first valve 18 and the second valve 13. The liquid tank 17, the second valve 13 are further connected in series with a circulation pump 15, and the water inlet 16 of the shearer 14 is connected with the circulation pump 15, thereby forming a complete circulation system. In addition, a flow pressure detector (not shown) can also be installed on the pipeline 12 to display the flow and pressure parameters inside the system at any time. In this way, a complete descaling circulation system is ...

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Abstract

The invention discloses a descaling method for a water circulation system of a coal shearer, which comprises the following steps: 1. connecting an external circulation system with the inner water circulation system of the coal shearer to form a complete circulation system; 2. checking whether the connection of the circulation system Stop the circulating pump after it is reliable and leak-free and confirm that it is safe and leak-free; 3. Carry out descaling cleaning and collect part of the clean water to calculate the saturation index LSI, and then add a certain concentration of descaling agent and perform circulating cleaning; 4. In progress 5. Check and clean up the dirt, open the place where the system is easily blocked, and clean up the flakes and dirt that are peeled off; 6. Fill the system with clean water and clean it in a cycle for 0.5-2 hours before discharging. The scale removal method for the water circulation system of the shearer of the invention is not only convenient and quick, but also can be carried out on the working face on site, and at the same time, there is no need to disassemble and dredge the equipment.

Description

technical field [0001] The invention relates to a method for removing scale from a water circulation system of a coal mining machine. Background technique [0002] At present, in the coal industry, the traction, cutting, crusher, hydraulic pump motor, rocker gear box and the motor that provide power for the coal mining machine are mostly cooled by water circulation. However, due to the problem of water quality itself and the influence of long-term high temperature, the scale in the water channel of the water circulation cooling system is usually serious, and even the water channel is blocked, so that the machine cannot operate normally. After the above problems occur, it is often necessary to disassemble and dredge, or even cut the waterway at any cost for dredging. [0003] The above-mentioned descaling method makes the on-site shutdown time long, and the cost of dismantling and installation is relatively high, and the damage to the water channel of the body is also very s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B08B3/08B08B9/027
Inventor 王生效
Owner CHINA SHENHUA ENERGY CO LTD
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