Filling slurry low-resistance free-flow pipeline conveying system

Abstract

The invention relates to a filling slurry low-resistance free-flow pipeline conveying system which comprises a receiving hopper, a filling guide pipe, a filling vertical pipe, an underground filling pipeline and an automatic control system. The filling slurry low-resistance free-flow pipeline conveying system is characterized in that the receiving hopper is arranged corresponding to a discharge hole of a stirring device; a liquid level monitoring device is arranged on the receiving hopper; a water ring damping device is arranged at the upper end of the filling vertical pipe; one end of the filling guide pipe communicates with a discharge hole of the receiving hopper; the other end of the filling guide pipe communicates with the feed end of the water ring damping device; a motor switch valve is arranged on the filling guide pipe; the underground filling pipeline is arranged in a main roadway and a branch roadway and is suspended on top plates of the roadways; the lower end of the filling vertical pipe communicates with the starting end of the underground filling pipeline; the tail end of the underground filling pipeline extends to an underground goaf to be filled; and an electric adjusting valve is arranged at the position close to the tail end of the underground filling pipeline. The filling slurry low-resistance free-flow pipeline conveying system has the advantages that the structure design is simple and reasonable, the gravitational potential energy is fully played, the on-way resistance and the local resistance of pipeline conveying is reduced, and the conveying distance is lengthened.

Description

technical field [0001] The invention belongs to the technical field of mine filling systems, and in particular relates to a low-resistance artesian pipeline conveying system for filling slurry. Background technique [0002] At present, in the field of mine filling system technology, mine filling systems generally use high-concentration or paste-bonded filling slurry for filling. In order to reduce production and operation costs, self-flowing conveying is mostly used. There is a common problem in mine filling system using self-flow conveying, that is, when the horizontal pipeline is long and the gravitational potential energy generated by the vertical height of the vertical pipeline is not enough to offset the transportation resistance of the filling slurry pipeline, the solution is usually to use the filling pump to pressurize the transportation Or add drag reducer to the filling slurry, but this kind of solution has greatly increased the production and operation costs of th...

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Problems solved by technology

There is a common problem in mine filling system using self-flow conveying, that is, when the horizontal pipeline is long and the gravitational potential energy generated by the vertical height of the vertical pipeline is not enough to offset the transportation resistance of the filling slurry pipeline, the solution is usually to use the filling pump to pressurize the transportation Or add drag reducer to the filling slurry, but this kind of solution has greatly increased the production and operation costs of the mine filling system; another problem in the mine filling system is that the local resistance of pipeline transportation is generally too large, and the pipeline transportation The main reasons for the problem of excessive local resistance are: 1) The concentricity of the vertical filling pipeline in the filling borehole is not good; 2) The underground filling pipeline in mines is mostly laid along the roadway floor or erected along the side wall of the roadway , but the horizontal main filling pipeline needs to cross many chamber-connecting roadways or branch roadways along the vein roadway, so the filling pipe needs to cross the door frequently. The slurry in the pipeline between the two convex cross doors is easy to deposit; on the contrary, when the lower cross door is used, the filling pipe becomes concave, which also greatly increases the local resistance, and the slurry in the pipeline at the concave cross door is easy to deposit. In addition, there is a risk of damage to the pipeline at the concave cross-door by vehicles and personnel; 3) In addition, in order to facilitate pipeline production, transportation and installation, the filling pipeline is composed of multiple pipe sections connected, and the gaps at the joints of each pipe section are both Increased local resistance has also become the weak point of the filling pipeline, and the wear is serious. Failure to monitor and replace it in time may lead to accidents such as slurry leakage and pipe burst

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