Coal mine drainage system

By designing the power supply switch circuit and pneumatic gate valve control in the coal mine drainage system, the automated management of the Laotang drainage power supply system was realized, solving the problem of automatic shutdown after the upper power trip, reducing costs and realizing unattended drainage operation.

CN115085142BActive Publication Date: 2026-06-02HUAINAN MINING IND GRP
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Patent Information

Application Number
CN202210734086.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-06-27
Publication Date
2026-06-02
Estimated Expiration
2042-06-27

AI Technical Summary

Technical Problem

The existing drainage and power supply system in coal mines cannot automatically shut down after a power outage, leading to frequent water-related accidents. Furthermore, automated drainage systems are costly and require frequent relocation and debugging of equipment.

Method used

A coal mine drainage system was designed, which utilizes a power supply switch circuit and a pneumatic knife gate valve. Through a time delay relay and gate valve control equipment, it realizes automatic gate closing and water shut-off functions. Combined with a pneumatic two-position four-way reversing valve and an electromagnetic pneumatic reversing valve, it realizes the on-off control of the drainage pipeline.

Benefits of technology

The system enables automatic shut-off and start-up of the power supply system for the old pond drainage system, reducing equipment costs, facilitating installation and commissioning, and enabling unattended operation at the drainage site, thus reducing the need for manual inspections.

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Abstract

This invention discloses a coal mine drainage system, belonging to the field of drainage technology. It includes a power supply switch circuit and a drainage device. The power supply switch circuit is connected to the drainage device via a magnetic starter. The power supply switch circuit includes a time-delay relay. The protection output point of the power supply protector and the normally closed contact of the power supply auxiliary relay are connected to the coil circuit of the time-delay relay. A rotary switch is connected in series between the time-delay relay and the power supply protector. The normally closed contact of the time-delay relay is connected to the power supply reset button, and the normally open contact is connected to the power supply closing button. The drainage device includes drainage equipment, a pneumatic knife gate valve, and a gate valve control device. The drainage pipeline is connected to the inlet of the drainage equipment. The outlet of the drainage equipment is connected to a check valve and then connected to a central pump room. The gate valve control device is connected to the pneumatic knife gate valve, which is installed on the drainage pipeline of the old mine. This invention can easily realize automatic power-on start-up and automatic water shut-off functions, achieving unattended operation at the drainage site.
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