Automatic quantification charging technology and apparatus using dytory method to prevent spontaneous combustion of coal

Abstract

The invention discloses an automatic quantitative feeding technique and device to prevent and cure spontaneous combustion by colloidal slurry. In the ground pulping station, it proportionally mixes water, yellow mud and water glass to feed them by pipeline to underground slip casting site, then adopts two-stage jet injector in series with the slip casting pipeline, connects a drawing tubule onto the first-stage jet injector, uses the negative pressure in the jet injector to draw coagulation accelerator by the drawing tubule into the serum in the pump, then feeds the mixed serum by the second-stage jet injector to the slip casting site, and regulates the opening size of the drawing tubule to regulate the drawing quantity. It has advantages of simple structure, convenient operation and energy saving.

Description

technical field [0001] The invention relates to an anti-fire extinguishing technology, which is mainly suitable for adding a coagulant accelerator to a grouting anti-fire extinguishing pipeline when colloidal mud is used for fire extinguishing underground in coal mines. Background technique [0002] Coal spontaneous combustion is one of the main disasters in mines. Gel and colloidal mud fire prevention and extinguishing technology is the main technology to prevent coal spontaneous combustion. [0003] Gel is silica gel, which is a kind of high-water colloid. It is prepared and mixed with the aqueous solution of base material A (water glass) and the aqueous solution of coagulant B in a certain proportion. Thermal cooling, used in underground coal mines, can effectively prevent coal spontaneous combustion. Colloidal mud is a mixture of gel and yellow mud. Its characteristics are: colloid mud, in addition to all the performance advantages of gel, also has the characteristics ...

AI Technical Summary

Problems solved by technology

[0006] (1) The use of underground explosion-proof electric glue injection pumps in coal mines requires power supply, which increases equipment investment costs;

[0007] (2) When the injection pump is working, there are many moving parts, so there are many faults, which increases the maintenance workload;

[0008] (3) The equipment needs to be operated by a special person, and the operation of the equipment requires power consumption, which increases related costs;

[0009] (4) The flow rate of the injection pump cannot be automatically adjusted according to the flow rate of the main agent in the pipe, which will easily affect the gelation time and the quality of the gel, and at the same time cause the loss of the slurry and affect the fire prevention effect

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