Positive pressure feeding abrasive jet system

An abrasive jet and feeding technology, which is applied in the direction of abrasives, abrasive feeding devices, explosion generating devices, etc., can solve the problems of poor jet convergence, uneven mixing of abrasives, and affecting cutting quality, etc., to improve convergence, Ease of operation, improvement of cutting ability and work efficiency

Inactive Publication Date: 2017-12-26
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of this feeding method is uneven mixing of abrasives, the speed of abrasive particles is far behind the speed of water jet, and the inhalation of a large amount of air makes the convergence of jet flow worse, which affects the cutting quality and the efficiency is not high.

Method used

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  • Positive pressure feeding abrasive jet system
  • Positive pressure feeding abrasive jet system
  • Positive pressure feeding abrasive jet system

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Embodiment Construction

[0013] An embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0014] The positive pressure feed abrasive jet system of the present invention is mainly composed of a slurry pump 1, an abrasive slurry pool 2, a regulating valve 3 and a mixing nozzle 4; the input port of the slurry pump 1 is connected with a pre-mixed abrasive The abrasive slurry pool 2, the output port of the slurry pump 1 is connected to the mixing nozzle 4 through the pipeline, and the regulating valve 3 is arranged on the pipeline of the output port, and the flow of the abrasive slurry is controlled by the regulating valve 3, thereby adjusting the abrasive flow; The mixing nozzle 4 is as figure 2 As shown, the head of the mixing nozzle 4 is provided with a large hole as a mixing chamber 7, and the bottom of the mixing nozzle 4 is provided with a long and small hole as a mixing tube 8, and the long and small hole communicates with the large hole and ...

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Abstract

Disclosed is a positive pressure feeding abrasive jet system. The system is composed of a positive pressure feeding system and a mixed spraying head; the positive pressure feeding system comprises an abrasive water pool, a slag slurry pump, an adjusting valve and the like; the mixed spraying head comprises a high-pressure water nozzle, an abrasive water inlet, a mixing cavity and a mixing pipe; abrasive and water are mixed in advance, through positive pressure feeding of the slag slurry pump and uniform sending of a feeding opening in the periphery of the mixing cavity, sufficient mixing and acceleration of the abrasive and high-pressure water can be ensured, through positive pressure feeding, the problems that in existing later mixing abrasive jetting, abrasive is uneven in mixing, the abrasive particle speed is far lower than the water jet speed, a large amount of air is sucked, and jet convergent performance is poor are solved, and the cutting performance and the work efficiency of the abrasive jet flow are improved.

Description

technical field [0001] The invention relates to an abrasive jet system, in particular to a positive pressure feed abrasive jet system suitable for abrasive jet cutting. technical background [0002] After decades of development, abrasive water jet technology has been successfully applied in the field of machining with its unique advantages. Abrasive water jet technology includes three different types of post-mixing, pre-mixing and slurry abrasive water jetting. Among them, the post-mixing abrasive jet technology is currently the most widely used due to its advantages of simple structure and continuous feeding. However, the post-mixing feeding method relies on the negative pressure caused by the high-speed water jet to suck the dry abrasive, and the abrasive is mixed with the high-speed water jet in the mixing chamber and accelerated in the mixing tube. The main disadvantage of this feeding method is uneven mixing of abrasives, the speed of abrasive particles lags far behin...

Claims

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Application Information

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IPC IPC(8): B24C7/00B24C5/04
CPCB24C7/0007B24C5/04
Inventor 郭楚文徐启文强持恒林捷周鑫
Owner CHINA UNIV OF MINING & TECH
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