Filling device for coal mining of coal mine

Abstract

The invention provides a filling device for coal mining of a coal mine. The filling device comprises a filling airbag and an air inflation nozzle mounted on one face of the filling airbag. A one-way valve is mounted on the face, away from the air inflation nozzle, of the filling airbag. The one-way valve is sleeved with a first rubber sleeve and a second rubber sleeve. An external threaded barrelis arranged on the outer side of the second rubber sleeve and is sleeved with a barrel. A fixed ring is fixed to the side, away from an internal thread, in the barrel. A thin iron sheet is arranged onthe side, deviating from the internal thread, of the fixed ring. Magnets are mounted on the face, facing the thin iron sheet, of the fixed ring. Compared with the prior art, the filling device has the following beneficial effects that the pressure relief function is achieved, the situation that the filling airbag is damaged due to extrusion is avoided, and the aim of stably stacking filling airbags is further achieved.

Description

technical field [0001] The invention relates to a filling device for coal mining in a coal mine, which belongs to the field of coal mining equipment. Background technique [0002] Comprehensive mechanized coal mining refers to the entire production process of the coal mining face, including coal breaking, coal loading, coal transportation, support, goaf treatment, mining roadway transportation, and excavation. At present, there is a certain distance between the last hydraulic support in the upwind roadway and the side of the upwind roadway in the fully mechanized mining face. The gap between the side of the road is affected by the mine pressure. The side of the upwind road and the roof of the coal seam are easily deformed, and then the filling air bag is squeezed. Because the filling air bag lacks the pressure relief function, the filling air bag is prone to damage. At the same time, the filling air bag is inflated Most of them are oval in shape, and the stacking stability ...

AI Technical Summary

Problems solved by technology

At present, there is a certain distance between the last hydraulic support in the upwind roadway and the side of the upwind roadway in the fully mechanized mining face. The gap between the side of the road is affected by the mine pressure. The side of the upwind road and the roof of the coal seam are easily deformed, and then the filling air bag is squeezed. Because the filling air bag lacks the pressure relief function, the filling air bag is prone to damage. At the same time, the filling air bag is inflated Most of them are elliptical, and the stacking stability is not enough

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