Nano-screen and its manufacturing method

A technology of nano-sieve mesh and manufacturing method, which is applied in chemical instruments and methods, semi-permeable membrane separation, membrane technology and other directions, can solve the problems of low screening efficiency and low effective utilization area of ​​nano-sieve mesh, and achieves faster screening rate, increased Effective use of area and improved screening efficiency

Inactive Publication Date: 2006-06-14
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the deficiencies such as low effective use area and low screening efficiency of nano-sieves in the prior art, the purpose of the present invention is to provide a nano-sieve with high effective use area and high screening efficiency

Method used

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  • Nano-screen and its manufacturing method
  • Nano-screen and its manufacturing method
  • Nano-screen and its manufacturing method

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Embodiment Construction

[0029] see figure 2 , the nanosieve 10 provided by the present invention includes a film 11 , a chassis 12 for holding the film, and a side wall 13 formed on the periphery of the chassis 12 . Wherein, the chassis 12 is a base with a hollow center, so that the film 11 can be held at the center of the chassis 12 . The side wall 13 has a certain height and can hold a certain amount of powder to be screened (not shown). The membrane 11 is a porous aluminum oxide membrane, and nanometer filter holes 14 regularly arranged in a certain direction are formed in its thickness direction.

[0030] see image 3 , is an enlarged schematic view of the surface structure of the film 11 in the nanosieve 10 . Thin film 11 is made up of many unit cells 15 with hexahedron shape (as shown by dotted line in the figure), and each unit cell 15 center contains a cylindrical hole shape nano filter hole 14, and each unit cell 15 surrounds by hexagon There are six identical unit cells arranged therei...

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Abstract

A nano-sieve for filtering the nanoparticles is composed of an aluminium oxide membrane with regularly arranged nano-hole mesh structure and a membrane holder with peripheral side wall.

Description

【Technical field】 [0001] The invention relates to a screening device, in particular to a nanoscale screen and a manufacturing method thereof. 【Background technique】 [0002] At present, the production and application of nanotechnology are becoming more and more extensive, and in the application of many nanopowders, the consistency of powder particle size is often required. Commonly used methods for manufacturing nano-powders include chemical reduction method, vapor deposition method, sol-gel method, etc. Due to the influence of reaction conditions and the difficulty of controlling the reaction process, these methods cannot obtain nano-powders with a single particle size. Therefore, it is necessary to resort to In other methods, for example, by screening the nano-powder product prepared by the above-mentioned method, as long as the mesh diameter of the sieve is consistent, the nano-powder with uniform particle size can be screened. [0003] see figure 1 , is a schematic dia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02B01D69/00
Inventor 翁维襄
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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