Shandong China Coal Mining Single Hydraulic Props Co., Ltd.

Shandong China Coal Mining Single Hydraulic Props Co., Ltd.

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    How To Prevent The Expansion Of The Single Hydraulic Props?

    1. Strengthen and improve the water quality supervision and management of working medium in hydraulic system of working face. Take effective measures to alleviate the impact of hydraulics, such as the choice of emulsified oil and the ratio of emulsion.

    2.Pay attention to improve the cleanliness of the hydraulic system and strengthen the pollution control of the hydraulic system. Ensure that the coarse and fine filtration device and magnetic filter device of the emulsion pumping station system are in good condition. Clean and clean regularly.

    3.Strengthen the maintenance inspection system for the driver of the emulsion pump station, and insist on checking the reliability of the unloading valve before the shift.


    4.After the pillar is supported by the top plate, the air from the lower chamber is discharged by the unloading handle. Then refill the top plate until the initial support force is reached to ensure its support effect.

    5. Strictly follow the technical characteristics of the single hydraulic props, select and set the rated working pressure of the three-purpose valve. 

    6.The working face is regularly calibrated with a three-way valve. The performance and opening and closing pressure should be able to meet the setting requirements. Action performance and opening and closing pressures must meet the set requirements. The practical experience is that the calibration cycle of the three-purpose valve is officially put into operation for three months as a cycle. The cycle should be determined according to the specific conditions of the mining face.

    7.It is necessary to optimize the safety and reliability of the three-way valve product design, for example opening overflow flow, rust prevention, structure, etc. The quality of manufacturing and overhaul should also be controlled by improving its safety and reliability, and ensuring the reliability of its work from the source.

    How To Prevent The Expansion Of The Single Hydraulic Props?

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