Material supply automatic switching system used for pre-mixed grinding material water jet equipment

Abstract

The invention relates to a material supply automatic switching system used for pre-mixed grinding material water jet equipment. The material supply automatic switching system used for the pre-mixed grinding material water jet equipment comprises throttling valves, high-pressure tanks, material inlet ball valves, a control module, bypass ball valves, a high-pressure water pump, main path ball valves, tuning fork densitometers, a diaphragm pump, a material bucket and a spray nozzle. Water supply of the two high-pressure tanks is controlled through the bypass ball valves; water supply of the spray nozzle is controlled through the main path ball valves; and material supply of the two high-pressure tanks is controlled through the material inlet ball valves. The density of grinding materials in the high-pressure tanks is monitored in real time through the tuning fork densitometers; then an obtained density value of the grinding materials is fed back to the control module; the control module performs comparative analysis on the density value and a set value and sends signals to the bypass ball valves, the main path ball valves and the material inlet ball valves of the two tanks correspondingly so as to control the bypass ball valves, the main path ball valves and the material inlet ball valves to open or close; and accordingly, automatic switching of continuous material supply of the two high-pressure tanks is finished. According to the material supply automatic switching system used for the pre-mixed grinding material water jet equipment, material supply of the two high-pressure tanks is automatically switched, so that the data analysis accuracy is high, timely response is achieved, switching is free, a problem of cutting stagnation caused by non-timely manual switching or a problem of insufficient utilization of the grinding materials and other problems are avoided, and the cutting efficiency is further improved.

Description

technical field [0001] The invention relates to the field of abrasive water jet cutting, in particular to an automatic feeding switching system for pre-mixing abrasive water jet equipment. Background technique [0002] Abrasive water jets are generally divided into two types: pre-mix and post-mix. The post-mixing abrasive jet is under the action of the driving force pressure, the water medium passes through the first nozzle to form a high-speed water jet, and a certain degree of vacuum is generated in the mixing chamber, so that a certain pressure difference is formed between the abrasive box and the mixing chamber. The abrasive enters the mixing chamber through pneumatic transport under the joint action of its own weight and pressure difference, and undergoes violent turbulent diffusion and mixing with the water jet. Then through the second nozzle (abrasive nozzle) to form an abrasive water jet. Its disadvantage is that the solid-liquid medium mixing is not ideal and the ...

AI Technical Summary

Problems solved by technology

In the prior art, the high-efficiency feeding device of the pre-mixing abrasive jet is a double-tank feeding device. Although the double-tank feeding solves the problem of alternate feeding of two tanks and improves productivity, the switching between the two tanks requires manual work. operate

Since there is no measure to monitor the amount of abrasive in the tank, the operator cannot accurately determine the timing of switching between the two tanks. Currently, the corresponding operation is only based on personal experience

In order to ensure that the workpiece is cut continuously, the cutting feed has to be interrupted when the two tanks are switched, resulting in the problem of reduced cutting efficiency and insufficient use of abrasives in the tank

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