Slurry long-distance hydraulic conveying and solid-liquid separation device and separation process

Abstract

The invention discloses a slurry long-distance hydraulic conveying and solid-liquid separation device and a separation process, the slurry long-distance hydraulic conveying and solid-liquid separationdevice is used for long-distance conveying and solid-liquid separation of coal-water slurry generated by hydraulic punching of gas drainage holes in a coal mine gas end-located drainage roadway. Eachcollecting and conveying unit comprises a moving trolley with a collection barrel fixed on the top surface, the collection barrel can receive slurry of a plurality of gas drainage holes, and the bottom end of the collection barrel is connected with a fine particle grading screen through a slime water pipeline with a slurry pump; oversize products of the fine particle grading screen enter a vacuumbelt filter, screen underflow of the fine particle grading screen enter enters a settling concentration tank, and the underflow of each settling concentration tank is conveyed to the vacuum belt filter; filtrate of the vacuum belt filter returns to the settling concentration tank, the overflow of the settling concentration tank enters a circulating water tank, the bottom end of the circulating water tank is connected with a circulating water main pipeline with a water pump, and the tail end of the circulating water main pipeline is respectively connected with a punching water tank, each collecting barrel and each slime water pipeline. The slurry long-distance hydraulic conveying and solid-liquid separation device can realize long-distance transportation of the slurry, solid-liquid separation and recycling of water for hydraulic punching.

Description

technical field [0001] The invention belongs to the technical field of coal slime water recovery in coal mine working faces, and in particular relates to a long-distance hydraulic transport of slurry, a solid-liquid separation device and a separation process. Background technique [0002] In order to release the coal and gas outburst potential and reduce or eliminate the outburst risk, the drill bit with high-pressure water is used to drill holes in the coal seam with self-spraying ability. After the hole, the gas in the coal seam is extracted through the gas extraction pipeline until the gas content in the coal seam reaches the safe range that can be mined. This method can effectively improve the drainage effect. Use high-pressure water to perform hydraulic punching on the rotary hole. The punching process Coal-containing slime water is produced. These slime waters not only affect the work environment of the workers in the lower part of the mine, but also cause the waste o...

AI Technical Summary

Problems solved by technology

The coal slime water not only affects the working environment of the workers in the lower part of the mine, but also causes waste of coal slime in the coal slime water

The existing recovery system is simple and cannot realize the long-distance transportation of coal slime and the reuse of circulating water

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