What does the coal mine filling tool body do?

Coal mine filling station is mainly composed of five parts: special mixing station for coal mine filling, filling pump, crushing machine room, dust removal system and steel structure workshop. Coal mine filling materials are mainly composed of coal gangue, fly ash, cementitious materials and water. This paper mainly introduces the related contents of coal mine gas station.

Let's talk about the preparations for the coal mine gas filling station. Before the mixing system works, the moisture in the raw materials is directly taken from the groundwater, and the fly ash and cementitious materials are transported to their respective powder bins in advance through the soot blowing pipes below the powder bins, while the waste rocks need to be treated by the crushing system first, and the treated finished waste rocks are stored in the batching bin through the conveyor. The preparatory work is also very important, because it directly affects the construction cycle of the project, so this part of the work must be completed.

Then the most important part is the working principle of coal mine gas filling station, as follows:

Firstly, the coal gangue is treated. This process is to transport the gangue produced in the mining process to the vibrating screen for screening. The screened large pieces of gangue enter the crusher for crushing, and then are screened by the vibrating screen again. Unqualified gangue is still sent back to the crusher until it is qualified. The qualified gangue and the finished gangue screened before are transported to the batching station of the mixing system by the conveyor.

There is a metering hopper below the storage bin of the batching station, and the gangue calibrated according to the control system can be given by weighing, and then transported to the gangue waiting hopper at the upper part of the mixer by the conveyor; At the same time, cement and fly ash are transported to the powder weighing hopper by the corresponding screw conveyor; Water is delivered to the water weighing hopper by the liquid supply system.

After all the materials are weighed, open the pneumatic door of the gangue waiting hopper and the valves of other raw material metering hoppers in a certain order, so that all the materials enter the blender, and start the blender to mix evenly. The filler obtained after stirring enters the filling pump through the discharge door, discharge hopper and rotating material distributing device of the mixer to complete a stirring cycle. Finally, the filling pump is controlled, and the mixed filling materials are discharged to the filling pump, and the filling materials are pumped to the goaf of the fully mechanized mining face in time.

Coal mine filling station solves the problem of ground collapse after underground coal mine is hollowed out. After coal mine filling, it can effectively protect groundwater resources and land resources, save a lot of manpower and material resources, greatly improve the coal recovery rate and create huge profits. This filling method can also protect the environment and promote the development of coal industry.