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Bionic non-smooth sorting screen surface

A non-smooth, sieve surface technology, applied in the direction of sieving, solid separation, grid, etc., can solve the problems of clogged sieve holes, non-discovery, sieve surface adhesion, etc., and achieve increased sieving time, simple processing, and adhesion sex-reducing effect

Inactive Publication Date: 2010-01-06
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, domestic and foreign scholars have not found a solution to the problems of adhesion and blockage on the screen surface during the cleaning and screening of wet agricultural materials.

Method used

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  • Bionic non-smooth sorting screen surface
  • Bionic non-smooth sorting screen surface
  • Bionic non-smooth sorting screen surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] figure 1 , 2 It is a bionic non-smooth cleaning sieve surface suitable for wet rapeseed extracts. Spherical crown-shaped convex units 3 are distributed on the sieve surface substrate 1. The diameter SR of the spherical crown is 0.5mm, and the height H is 0.5mm. The raised unit bodies 3 are arranged in a staggered grid, the horizontal distance x of the unit bodies 3 is 2 mm, the longitudinal distance y of the unit bodies 3 is 1.5 mm, and the distribution density of the raised unit bodies 3 is one of the geometric projected areas on the surface of the substrate. The ratio of the sum to the surface area of ​​the substrate is 35%, and the sieve surface substrate 1 is provided with sieve holes 2. Compared with the ordinary smooth cleaning sieve, the adhesion between the rape extract to be screened and the sieve surface is reduced by 80%, which is effective Sieving time increased by 15 times;

Embodiment 2

[0025] figure 1 , 3 It is a bionic non-smooth cleaning sieve surface suitable for wet corn cleaning. Spherical crown-shaped convex units 3 are distributed on the sieve surface substrate 1. The diameter SR of the spherical crown is 2 mm, and the height H is 2 mm. The spherical crown-shaped convex The unit bodies 3 are arranged in a staggered grid, the horizontal distance x of the unit bodies 3 is 7mm, the longitudinal distance y of the unit bodies 3 is 6mm, and the distribution density of the raised unit bodies 3 is the sum of the geometric projection area on the surface of the substrate and the sum of the matrix The surface area ratio is 42%, and the sieve surface substrate 1 is provided with sieve holes 2. Compared with ordinary smooth cleaning sieves, the adhesion between the corn extracts to be sieved and the sieve surface is reduced by 40%, and the effective sieving time increase by 6 times;

Embodiment 3

[0027] figure 1 , 4 It is a bionic non-smooth cleaning sieve surface suitable for moist rice extracts. The sieve surface substrate 1 is distributed with cylindrical convex units 3, and the diameter of the cylinder is is 1.6mm, height H is 1mm, cylindrical raised units 3 are arranged in a staggered grid, the horizontal distance x of unit 3 is 2.9mm, the longitudinal distance y of unit 3 is 3mm, and the distribution density of raised units 3 is The ratio of the sum of the geometric projected areas on the surface of the substrate to the surface area of ​​the substrate is 30%. The sieve surface substrate 1 is provided with sieve holes 2. The adhesion of the surface is reduced by 50%, and the effective sieving time is increased by 8 times;

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Abstract

The invention belongs to a bionic non-smooth sorting screen surface for agricultural machinery, which solves the problem that wet agricultural materials can stick to a screen and block holes in the screen during sorting and screening. The bionic non-smooth sorting screen surface is characterized in that the surface of a base body of a sorting screen is made into a non-smooth surface with convex bodies or concave elements, wherein the convex bodies or concave elements have the height (H) of 0.5 to 2 mm and correspond to the geometrical dimension of materials to be screened, and the sum of the geometrical projection areas of the convex bodies or the concave elements on the base body of the screen surface and the area of the base body of the screen surface have the ratio of 30 to 70%. Compared with a common smooth sorting screen, the stickiness between the screen surface and the materials to be screened by the bionic non-smooth sorting screen surface is decreased by 40 to 80%, and the effective screening time is prolonged by 6 to 20 times. The invention has the effect on resisting stickiness and preventing blockage and simple structure, and can be obtained through common mechanical process; compared with the cost of a common smooth punched screen, the cost of the invention is increased a little.

Description

technical field [0001] The invention belongs to a screen surface for agricultural machinery, in particular to a bionic non-smooth cleaning screen surface. Background technique [0002] The mechanized combined harvesting process is to cut off the mature crop plants in the field, feed them to the threshing device through the conveying trough, and remove the grains from the crop spikes or siliques. Drain out of machine. With the development of economy and society and the increase of labor cost, the demand for mechanized harvesting of crops is increasing. The moisture content is generally 50% to 72%, the moisture content of the silique shell is 54% to 66%, and the maturity of the silique is significantly different; when the southern late japonica rice or the northern prefrost rice is harvested, the moisture content of the stem is 30-60%. The increase in moisture content of crops makes it difficult to separate moisture and dehumidification during threshing, and it is even more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07B1/46A01F12/44
Inventor 徐立章李耀明马征
Owner JIANGSU UNIV
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