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Discharging device used for waste circuit board non-metal powder and ultrafine powder preparation process matched with device

A technology for discarded circuit boards and unloading devices, which is applied in the fields of application, cocoa, and grain processing, etc. It can solve the problems of increasing powder friction, uneven feeding, and reducing the effect of single grinding technology, so as to improve feeding Stability and uniformity, stable and uniform quantitative discharge, shortening the effect of cycle grinding times

Active Publication Date: 2020-02-28
成都普美怡科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, since the blades of the impeller of the commercially available star unloader are planar plate structures, when the motor rotates, the gap between the blades and the inner cavity of the housing changes nonlinearly from small to large, resulting in discontinuity in the discharge speed of solid particles and filamentous materials. , unable to achieve quantitative discharge of powder with small particle size
Therefore, the feeding of the raw materials in the above-mentioned prior invention during the research and development process is actually non-uniform, especially the non-metallic powder of waste circuit boards as the raw material, because the powder contains a large amount of broken glass fibers, causing the raw materials to be in the process of feeding. Further non-uniformity, which directly leads to non-uniform distribution of raw materials in the grinding disc during the grinding process of the solid-phase mechanochemical reactor, reduces the technical effect of a single grinding, and directly affects the prior invention. In order to realize its invention Parameters of the preparation method claimed by the purpose
[0009] In addition, due to the high water content (~15wt%) in the commercially available waste circuit non-metallic board powder for production raw materials, it will further increase the internal friction of the powder and further cause uneven feeding. If drying treatment is used, it will affect the Negative impact on solid phase mechanochemical reactor milling process, reducing product quality and production efficiency
[0010] It is worth mentioning that the above-mentioned unsteady feeding method will also seriously affect the grinding operation of the solid-phase mechanochemical reactor, causing shutdown or damage of the solid-phase mechanochemical reactor

Method used

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  • Discharging device used for waste circuit board non-metal powder and ultrafine powder preparation process matched with device

Examples

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Embodiment 1

[0047] as attached figure 1 As shown, an unloading device for non-metallic powder of waste circuit boards includes a feeding bin 1, a casing 2, an impeller 3, a driving device and a discharge port, and the impeller 3 is provided with eight blades 4, and the blade 4 is a twisted blade, as attached Figure 2-5 As shown, the height from the root of the blade to the top is 100mm, the axial width of the root of the blade is 200mm, and it is a "twist"-shaped self-rotating spiral from the root of the blade to the top, and its lead angle is 80°. The self-rotating spiral is shown in the figure , is a self-rotating helix along the central axis from the root to the top of the blade;

[0048] The capacity of the feed bin 1 of the discharge device is 250L, and its discharge port is closed and connected with the millstone feed port of the solid-phase force chemical reactor 7 by an L-shaped pipeline 6;

[0049] A circular buffer sieve plate 5 with a diameter of 200 mm is also provided on t...

Embodiment 2

[0059] A device for unloading non-metallic powder of waste circuit boards, including a feeding bin, a casing, an impeller, a driving device, and a discharge port. The impeller is provided with six blades, and the blades are twisted Blade, the height from the root of the blade to the top is 80mm, the axial width of the root of the blade is 180mm, from the root to the top of the blade is a "twist"-shaped self-rotating helix, and its lead angle is 85°, and the self-rotating helix is ​​from the root of the blade to the top The central axis of the self-rotating spiral;

[0060] The capacity of the feed bin 1 of the unloading device is 270L, and its discharge port is closed and connected with the millstone feed port of the solid-phase force chemical reactor through an L-shaped pipeline;

[0061] A circular buffer sieve plate with a diameter of 150 mm is also provided on the discharge port, and the buffer sieve plate is provided with a convex structure facing the feed end, and the lo...

Embodiment 3

[0070]A discharge device for non-metallic powder of waste circuit boards, including a feeding bin, a casing, an impeller, a driving device and a discharge port, the impeller is provided with twelve blades, and the blades are Twisted blades, the height from the root of the blade to the top is 120mm, the axial width of the root of the blade is 250mm, from the root to the top of the blade is a "twist"-shaped self-rotating spiral, and its lead angle is 89°, and the self-rotating spiral is along the root of the blade to the top. The central axis at the top rotates the spiral;

[0071] The capacity of the feed bin 1 of the unloading device is 300L, and its discharge port is closed and connected with the millstone feed port of the solid-phase force chemical reactor through an L-shaped pipeline;

[0072] A circular buffer sieve plate with a diameter of 250 mm is also provided on the discharge port, and the buffer sieve plate is provided with a convex structure facing the feed end, and...

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Abstract

The invention provides a discharging device used for waste circuit board non-metal powder and an ultrafine powder preparation process matched with the device. The discharging device comprises a feeding bin, a shell, an impeller, a drive device and a discharge opening. 6-12 blades are arranged on the impeller, and the blades are twisted blades. A round buffer screen plate is further arranged on thedischarge opening. According to the ultrafine powder preparation process matched with the device, the discharging device is in closed connection with a feeding opening of a solid phase force chemicalreactor, and process parameters are changed. By means of the discharging device, stable and uniform quantitative discharging of production raw material waste circuit board non-metal powder is achieved, and by means of the preparation process, the yield of preparing the waste circuit board non-metal ultrafine powder is greatly improved; and in the prepared waste circuit board non-metal ultrafine powder, the draw ratio of glass fibers ranges from 30 to 50, and the bending modulus of a polyethylene / waste non-metal fine powder composite prepared through the waste circuit board non-metal ultrafinepowder is improved by 25%-3% relative to original process parameters.

Description

technical field [0001] The invention belongs to the technical field of non-metallic powder recycling materials and recycling technology thereof, and relates to a non-metallic powder unloading device for waste circuit boards and a supporting ultrafine powder preparation process, specifically non-metallic ultra-fine powder for waste circuit boards. Fine powder industrial preparation process. Background technique [0002] The printed circuit board (PCB) industry is the foundation of the electronic and electrical industry, and its output and consumption are huge. In 2012, the global printed circuit board output value reached 54.31 billion US dollars (National Statistical Yearbook, 2013). my country is the world's largest producer and consumer of printed circuit boards, accounting for about 40% (Global Electronic Circuit Industry Annual Report 2013). Every year, more than 500,000 tons of waste printed circuit boards (WPCB) are discarded in my country (2013 statistical report of ...

Claims

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Application Information

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IPC IPC(8): B02C7/11B02C23/02B02C23/08
CPCB02C7/11B02C23/02B02C23/08B02C2201/06
Inventor 李怡俊白时兵张袁宇瀚陈学张卓靖白元彰何涛钟枫
Owner 成都普美怡科技有限公司