A kind of advanced premixed abrasive water jet equipment and generating method

Abstract

The invention discloses an advanced pre-mixed abrasive water jet equipment and a generating method, comprising: a mixing bucket, a mixer, a feeding pump, a grouting pump and a nozzle; wherein, the mixing bucket is provided with a device capable of circulating the inside of the mixing bucket. agitator for stirring; the bottom of the stirring barrel is communicated with the input end of the feed pump through pipeline 1; the output end of the feed pump is communicated with the liquid inlet end of the three-way ball valve through pipeline 2; One of the liquid outlet ends of the three-way ball valve is communicated with the mixing barrel through pipeline 3, and the other liquid outlet end of the three-way ball valve is communicated with the grouting pump inlet of the grouting pump through pipeline 4; the grouting pump The outlet of the grouting pump is connected with the nozzle by a high-pressure hose.

Description

technical field [0001] The invention relates to the technical field of abrasive water jets, in particular to an advanced premixed abrasive water jet equipment and a generation method. Background technique [0002] Abrasive water jet technology is a new technology developed in modern times, which is widely used in industrial cutting, rock excavation, surface cleaning and drilling and mining. According to different feeding methods, abrasive water jets are divided into pre-mixed abrasive water jets and post-mixed abrasive water jets. Because the post-mixed abrasive water jet cannot fully mix the abrasive with the high-speed water, the transmission efficiency of the water medium to the abrasive is obviously reduced, and the acceleration time for the abrasive is short and insufficient. Therefore, in rock excavation, drilling and mining, etc. On the one hand, the rock-breaking ability of the post-mixed abrasive water jet is poor, and due to the limitations of the engineering envi...

AI Technical Summary

Problems solved by technology

Since the post-mixed abrasive water jet cannot fully mix the abrasive with the high-speed flowing water, the transmission efficiency of the aqueous medium to the abrasive is significantly reduced, and the acceleration time for the abrasive is short and insufficient. Therefore, in rock excavation, drilling and mining, etc. On the one hand, the post-mixed abrasive water jet has poor rock-breaking ability, coupled with the limitations of the engineering environment, it is impossible to use the post-mixed abrasive water jet

At the same time, although the pre-mixed abrasive water jet is uniformly mixed, and the abrasive acceleration time is long, the coal-breaking effect is better, but a key problem that limits the large-scale application of the pre-mixed abrasive water jet is the problem of continuous abrasive feeding; When water jet and post-mixed abrasive water jet are used to break coal and rock, the water cushion effect is more obvious, the energy utilization rate is lower, and the effect of breaking coal and rock is worse than that of pulsed abrasive water jet.

[0003] In order to realize the real continuous feeding of the front mixing abrasive jet, "a double tank double pump type front mixing abrasive jet continuous working system" (CN107953270B) uses two high-pressure abrasive tanks and two high-pressure water pumps to work alternately to realize continuous feeding. material, but the structure of this equipment is complicated, and the sand mixing ratio cannot be precisely controlled. At the same time, the working system is a continuous jet, and the water cushion effect is obvious.

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