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Flow controllable high-pressure environment powder conveying device

A technology of high-pressure environment and powder feeding device, which is applied in the direction of conveyor objects, transportation and packaging, etc., and can solve problems such as difficult adjustment of powder feeding flow

Inactive Publication Date: 2012-10-10
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the existing powder filling technology is mainly used in powder metallurgy industry, powder feeding of laser surface cladding rapid prototyping and powder feeding in thermal spraying industry. The powder filling devices used in these industries often only need to The powder can be sent to the normal pressure environment, or the powder can be sent to the high pressure environment, but the powder feeding flow rate is not easy to adjust

Method used

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  • Flow controllable high-pressure environment powder conveying device

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Experimental program
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Embodiment

[0015] This embodiment is a powder combustion powder supply device applied on a new powder rocket engine principle test machine. The powder is a metal powder with a particle size of 39 microns. 2 As high pressure gas, the pressure is 0.45MPa.

[0016] Refer to attached figure 2 , the device includes a powder cylinder 4, a piston 5, a powder feeding screw 1, and a powder falling cylinder 9; Sealing; the upper end of the powder cylinder 4 is screwed to the upper end cover 7, and the contact surface between the inner wall of the powder cylinder 4 and the upper end cover 7 is sealed with an O-ring; the center of the upper end cover 7 has an axial through hole through which the piston guide rod 6 passes. Through hole, the outer end of the piston guide rod 6 has a piston limit nut, which is used to limit the range of motion of the piston, the inner end of the piston guide rod 6 is fixedly connected with the piston 5, and the through hole between the piston guide rod 6 and the uppe...

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Abstract

The invention provides a flow controllable high-pressure environment powder conveying device which comprises a powder barrel, a piston, a powder conveying screw rod and a powder dropping barrel. By arranging the piston in the powder barrel, a path of high-pressure gas is introduced to the back of the piston, the powder barrel is operated in a certain pressure environment, the working pressure andthe powder conveying pressure of the powder barrel are ensured, and a stepping motor drives the powder conveying screw rod to control powder conveying, thereby powder conveying flow and total amount are precisely controlled. The device disclosed by the invention is applied to a combustion powder injecting technology of a novel powder rocket engine.

Description

technical field [0001] The invention relates to the technical field of powder filling, in particular to a flow-controllable high-pressure environment powder feeding device. Background technique [0002] In the current industrial field, many production and experiment aspects are inseparable from powder filling technology, such as the combustion powder filling of new powder rocket engines, the tracer particle filling of high-pressure flow field PIV visualization, and the powder filling of powder metallurgy industry. Powder feeding for filling and laser cladding rapid prototyping, etc. At present, the existing powder filling technology is mainly used in powder metallurgy industry, powder feeding of laser surface cladding rapid prototyping and powder feeding in thermal spraying industry. The powder filling devices used in these industries often only need to The powder can be sent to the normal pressure environment, or the powder can be sent to the high pressure environment, but...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65G47/74
Inventor 胡春波徐义华何国强李江
Owner NORTHWESTERN POLYTECHNICAL UNIV