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Quadratic accelerating ultrasonic nebulization jet nozzle system for preparing copper powder

A technology of secondary acceleration and atomizing nozzles, applied in the field of nozzles and glands, can solve problems such as lack of speed, and achieve the effects of enhanced crushing force, simple processing technology, and uniform gap between annular gaps

Inactive Publication Date: 2009-06-17
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the Laval type can achieve supersonic speed, it still lacks speed

Method used

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  • Quadratic accelerating ultrasonic nebulization jet nozzle system for preparing copper powder

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Experimental program
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Embodiment Construction

[0014] Nozzle 1: The length of the inlet 6 frustum is designed to be 2.75 times that of the outlet 7 frustum, the taper of the inlet 6 frustum is 1:2.2, and the taper of the outlet 7 frustum is 1:4. The included angle between the nozzle 1 and the vertical direction, that is, the vertex angle, is designed to be 45 degrees.

[0015] Gland 2: Two boss structures are designed on the inside of the gland 2. The angle between the boss structure A5 and the vertical direction, that is, the top angle, is designed to be 40 degrees, and the angle between the boss structure B4 and the vertical direction, that is, the top The angle is designed to be 54 degrees.

[0016] The nozzle material is Cf / SiC composite material, and the heat insulating material and protective cover are made of FRC1-12 made of 22% boro-aluminate fiber.

[0017] Put the gland 2 on the nozzle 1, a medium channel 3 is formed between the nozzle 1 and the gland 2, and the medium channel 3 forms a constricted flow channel ...

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Abstract

The copper powder secondary supersonic atomization nozzle system with the inlet of the inner hole formed into tapering shape and connecting with the top of the tapering shape, at least two compression cover bosses. The long conical shape of the rear of the nozzle allows the copper fluid contracted by the air flow attraction, storing the energy, spraying finer grains. The atomized media reaches supersonic speed after secondary speeding up, spraying out from the isolation expansion, acquiring great media speed and energy, strengthening crushing force, with finer powder particles. It can separate the machining of the nozzle and the compression cover with simple process and convenient installation.

Description

Technical field [0001] The invention relates to a nozzle and a gland used for preparing copper powder by atomization, in particular to a secondary accelerated supersonic atomizing nozzle system for preparing copper powder. Background technique [0002] In non-ferrous metals, the production and consumption of copper powder are increasing, especially the refined copper powder with a particle size of 400 mesh (38 μm in diameter) or more. In recent years, its demand has increased significantly. Copper powder is also the current development trend of copper powder production and application in my country. [0003] Domestic production methods of copper powder include electrolysis, gas reduction, atomization, etc. The electrolysis method needs to consume a lot of electric energy, the powder has high activity, needs reduction treatment, and the cost is high. It is not suitable to produce copper-based alloy powder, and a large amount of waste electrolyte needs to be reprocessed, other...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/08
Inventor 刘晓波孙康黄开启
Owner JIANGXI UNIV OF SCI & TECH
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