Uniform adjustable powder feeding device

A powder feeding device and uniform technology, applied in packaging and other directions, can solve the problems of difficulty in accurately conveying small flow powder materials, large differences in powder feeding uniformity, poor feeding uniformity, etc., achieving simple structure and wide powder volume adjustment range. , The effect of powder feeding is even and adjustable
CN102114972BInactive Publication Date: 2012-07-04CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2012-07-04
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a uniform adjustable powder feeding device which comprises an speed-adjusting motor, an speed-adjusting motor transmission shaft, a feed tank cover, a feed tank, a feeding shaft and an air inlet pipe, wherein the feed tank cover is arranged on the feed tank, a vacuum sealing washer is arranged between the feed tank and the feed tank cover, a vacuum dynamic seal device is arranged in the middle of the feed tank cover, a loading port is formed at an edge of the feed tank cover, the upper end of a rotating shaft of the vacuum dynamic seal device is connected with the speed-adjusting motor transmission shaft, the lower end of the rotating shaft of the vacuum dynamic seal device is connected with the upper end of the feeding shaft, the feeding shaft is perpendicularly mounted, a spiral shaft is arranged at the lower part of the feeding shaft, the spiral shaft is inserted into a feed pipe at the bottom of the feed tank, the feeing shaft is a hollow shaft, a gap is formed at the junction of the upper end of the feeding shaft and the rotating shaft of the vacuum dynamic seal device, the lower part of the feed pipe is communicated with an air / powder discharge pipe, the air inlet pipe is connected with the middle part of the feed pipe and the middle part of the air / powder discharge pipe, and a valve is arranged on the air inlet pipe. The uniform adjustable powder feeding device solves the problem that the spiral shaft is choked by using the cooperative action of gravity force and spiral force, and improves the powder feeding accuracy in case of no pressure fluctuation by adopting the hollow spiral shaft.
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Description

technical field

[0001] The invention relates to a uniform and adjustable powder feeding device. Background technique

[0002] In chemical vapor deposition, laser cladding and plasma spraying, etc., the problem of quantitative and uniform powder transportation is involved, and the quality and uniformity of the control are directly related to the success of the process and the quality of the coating performance. For example, in the chemical vapor deposition process, there are many raw materials that are solid at room temperature (such as ZrCl 4 , HfCl 4 , TaCl 5 , ZrF 4 , YBr 3 etc.), there are two ways to feed the raw materials into the reaction furnace, one is to introduce the raw materials into the furnace after being heated and gasified, which has a low utilization rate of the raw materials and is easy to block the pipeline; the other is to directly send the raw material powder in the form of solid This method can overcome the above shortcomings, but it needs to sol...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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