Grouting device for coal mine geological water plugging

Abstract

The invention discloses a grouting device for coal mine geological water plugging. The grouting device comprises a grouting pump, a fixing support is fixedly installed at the top end of the grouting pump, a grouting pipeline is arranged at the bottom end of the grouting pump, a flow limiting valve body is fixedly installed in the middle of the grouting pipeline and located in the middle of an inner cavity of the fixing support, and a one-way control valve is fixedly installed at the other end of the grouting pipeline. According to the grouting device for coal mine geological water plugging, due to the arrangement of a pressure connecting rod, a control valve element and structures on the pressure connecting rod and the control valve element, the flow of grout in the grouting pipeline can be controlled according to the flow of the grout in an inner cavity of a turbulent flow sleeve and the elasticity of a pressure spring, meanwhile the size of a circulation hole diameter of the flow limiting valve body can be manually adjusted, therefore, the flow and the pressure of the grout in the inner cavity of the grouting pipeline are effectively controlled, and the phenomenon that the groutoverflows due to the fact that the conveyed flow and the conveyed pressure are too large and the grout cannot enter cracks or holes of a rock-soil foundation in time is avoided.

Description

technical field [0001] The invention belongs to the technical field of water plugging and grouting equipment, and in particular relates to a grouting device for coal mine geological water plugging. Background technique [0002] The grouting process is a kind of grout that can be solidified is injected into the cracks or pores of the rock foundation through the grouting pump, and the method of displacement, filling or extrusion is used to achieve the anti-seepage, water blocking and solidification of the rock foundation. Among them, the grouting pump is the key equipment in the grouting construction, which mainly makes the grouting cylinder generate higher injection pressure through the larger action area ratio between the pressure cylinder and the grouting cylinder, and Squeeze the slurry into the cracks or pores of the rock foundation. [0003] Among them, the piston pressure type, as a common working form of the grouting pump, is widely used in coal mine industry or const...

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Problems solved by technology

[0004] The invention provides a grouting device for coal mine geological water plugging, which has the advantages of no pulse phenomenon in the piston grouting pump, high compactness of the cured grout and high connection strength, and solves the problem of the existing piston pressure. The type grouting pump needs the reciprocating movement of the piston to generate extrusion force, so that the pressure during grouting will pulse, resulting in a decrease in the density of the grout when it is squeezed into the rock foundation. Due to the existence of the pulse phenomenon, the phenomenon of dense and sparse intervals is caused, resulting in a large number of air bubbles or water vapor remaining in the slurry, which eventually leads to poor compactness and connection strength of the slurry after curing, and poor stability and safety. low problem

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