Slurry vacuum bag multi-point synchronous filling device and filling process

Abstract

The invention provides a slurry vacuum bag multi-point synchronization filling device which comprises a slurry receiver, a plurality of slurry distributors, slurry injectors and vacuum composite bags, wherein the slurry distributors are arranged front and back; every two adjacent slurry distributors are connected by a connecting piece; each slurry distributor corresponds to one vacuum composite bag; a slurry inlet is formed at one end of the slurry receiver; a first pressure release control valve is mounted at the other end of the slurry receiver; a slurry outlet is formed in the middle of the slurry receiver, and connected with an inlet of the first slurry distributor; the middles of the slurry distributors are connected with the slurry injectors by branch pipelines; the slurry injectors are mounted at slurry inlets of the vacuum composite bags; and a second pressure release control valve is mounted at the tail end of the last slurry distributor. The invention further provides a filling technology by utilizing the device. According to the method and the technology, synchronous starting, synchronous completion and synchronous stop of filling operation of the vacuum composite bags in multiple places can be achieved; the filling efficiency and the production efficiency are high; an operator is reduced; and the congenital contradiction between the filling operation and coal mining operation is solved.

Description

technical field [0001] The invention relates to a slurry vacuum bag type multi-point synchronous filling device and a filling process suitable for a wall-type coal mining face in a coal seam with a thickness of less than 1.5 meters, and belongs to the field of coal mining filling. Background technique [0002] In order to control the surface subsidence and its environmental damage, some coal mining enterprises have adopted the filling method of coal mining. At present, there are three deficiencies in the filling methods of slurry materials such as plastic woven bag type, flexible film type, hydraulic sealing type and wall-building type used in the wall coal mining face: one is the setting and removal of the isolation retaining wall 1. There are many auxiliary operations such as support and removal of the roof, which reduces the filling efficiency; second, the filling speed is much lower than the coal mining speed, which reduces the production efficiency; third, more labor ca...

AI Technical Summary

Problems solved by technology

At present, there are three deficiencies in the filling methods of slurry materials such as plastic woven bag type, flexible film type, hydraulic sealing type and wall-building type used in the wall coal mining face: one is the setting and removal of the isolation retaining wall 1. There are many auxiliary operations such as support and removal of the roof, which reduces the filling efficiency; second, the filling speed is much lower than the coal mining speed, which reduces the production efficiency; third, more labor capacity is required, which increases the filling cost

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