On-site charging vehicle for intrinsically safe emulsion explosives

Abstract

The invention belongs to the technical field of explosion equipment and relates to an intrinsic-safety type emulsion explosive on-site loading truck. The intrinsic-safety type emulsion explosive on-site loading truck is mainly characterized in that a static emulsifier and a static sensitizer are adopted for emulsification and sensitization; the outlet end of the static emulsifier is butted with a conveying hose; the tail end of a sensitizer storage and conveying system is butted with the head end of the conveying hose; the static sensitizer is arranged at the tail end of the conveying hose. The intrinsic-safety type emulsion explosive on-site loading truck has the advantages that the sensitizer is arranged at the end part of the conveying hose and is put in a blast hole together with the conveying hose and is used for carrying out sensitization in the blast hole, so that a finished-product emulsion explosive is formed, and thus the safety risk in the process of conveying the finished-product emulsion explosive is avoided; on the other hand, both the emulsifier and the sensitizer used in the loading truck disclosed by the invention are of a static structure, no shear and mechanical friction exists in the emulsification and sensitization process, the sensitivity is reduced, explosion in the production process is avoided and the production safety is ensured.

Description

technical field [0001] The invention belongs to the technical field of blasting equipment and relates to an on-site charge vehicle for intrinsically safe emulsion explosives. Background technique [0002] Emulsion explosives are a new product developed in the 1970s. In 1969, Blabm in the United States first described the emulsion explosive technology in a relatively comprehensive way. The earliest emulsion explosives were non-detonator-sensitive, and they had to be detonated with the help of relay primers. , with the in-depth research on emulsion explosives, the emulsion explosives developed in the later stage also have detonator sensitivity, and have good water resistance, good explosive performance, low mechanical sensitivity and good safety, and the cost is lower than that of water gel. Explosives, from a global perspective, bulk emulsion explosives and their mixed vehicles have been widely used. With the gradual increase in our country's emphasis on production safety, bu...

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Problems solved by technology

[0002] Emulsion explosives are a new product developed in the 1970s. In 1969, Blabm in the United States first described the emulsion explosive technology in a relatively comprehensive way. The earliest emulsion explosives were non-detonator-sensitive, and they had to be detonated with the help of relay primers. , with the in-depth research on emulsion explosives, the emulsion explosives developed in the later stage also have detonator sensitivity, and have good water resistance, good explosive performance, low mechanical sensitivity and good safety, and the cost is lower than that of water gel. Explosives, from a global perspective, bulk emulsion explosives and their mixed vehicles have been widely used. With the gradual increase in our country's emphasis on production safety, bulk explosives are already suitable for mines due to safety risks in the transportation process. Or the explosives in the mine production process. At present, in the mine and mine production, the on-site mixing truck is basically used for mixing. The mixing truck will not produce finished explosives during the production process, and it will not pass until 10 minutes before the final loading into the blast hole. The sensitization reaction becomes a finished explosive. Although the risk factors existing in the transportation process of bulk emulsion explosives are avoided, the existing mixed trucks still have safety risks in the production process.

[0003] The main components of mixed explosives in the on-site mixing vehicle are water phase, oil phase and sensitizer, etc. The water phase solution flows out from the water phase pump and enters the emulsifier through the water phase flowmeter, and the oil phase liquid flows out from the mailbox pump and passes through the emulsifier. The oil phase flow meter enters the emulsifier, and the water phase and the oil phase are stirred at a high speed in the emulsifier to form a latex matrix. The sensitizer flows out from the sensitizer pump and enters the mixer through the sensitizer flow meter, and at the same time, the latex matrix leaf enters the mixing The mixed slurry falls into the hopper of the screw pump by its own weight, and finally the slurry is pressed into the blast hole by the pressure of the screw pump; in the actual mixing process, the latex matrix and the sensitizer are mixed The mixing in the mixer makes part of the matrix foam to form explosives, which has a certain sensitivity. The existing mixer is a forced stirring device. When metal impurities and other objects enter the mixer, there is a possibility of danger due to heat accumulation due to friction; At the same time, the medium pumped by the screw pump is already a finished emulsion explosive. Due to the structural principle of the screw pump and the long-term use experience of the screw pump in the civil explosive industry, there is a great potential safety hazard in pumping the finished emulsion explosive with a screw pump, which greatly reduces The overall safety of the emulsion explosive mixed vehicle has also caused many explosion accidents, resulting in a certain degree of personal injury

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