Device and method of graded and classified screening according to particle sizes

Abstract

The invention provides a device and a method of graded and classified screening according to particle sizes. The device comprises an emptying hopper, a first holding hopper, a second holding hopper, athird holding hopper, a lower sieve plate, a middle sieve plate, an upper sieve plate, a filter steel mesh sieve and hollow bars. The hollow bars are symmetrically mounted on the left and right sidesof a screening box, the filter steel mesh sieve is mounted on the inner sides of the hollow bars, the upper sieve plate is mounted on the lower side of the filter steel mesh sieve, the middle sieve plate is mounted on the lower side of the upper sieve plate, the lower sieve plate is mounted on the lower side of the middle sieve plate, the emptying hopper is mounted on the right end surface of thescreening box, the first holding hopper is mounted on the lower side of the emptying hopper, the second holding hopper is mounted on the lower side of the first holding hopper, and the third holdinghopper is mounted on the lower side of the second holding hopper. The design solves the problem that classified screening of original raw materials is not facilitated, and the device is reasonable instructure, convenient for classified screening and rapid for classified screening.

Description

technical field [0001] The invention relates to a device and method for grading, classifying and screening according to particle size, belonging to the technical field of machinery. Background technique [0002] The existing materials are inconvenient to classify and screen. After the materials are produced, they are mixed together. For feed, these feeds are usually put directly into the breeding ponds, but there are some differences in the size of the materials, and different sizes of materials are fed with different sizes. Therefore, it is necessary to screen and classify the materials, and now there is an urgent need for a device that classifies and screens according to particle size to solve the above-mentioned problems. [0003] For other industrial materials, the uniform particle size cannot be guaranteed during the production process. Usually, after the production is completed, the materials need to be classified according to the particle size. Contents of the inven...

AI Technical Summary

Problems solved by technology

[0002] The existing materials are inconvenient to classify and screen. After the materials are produced, they are mixed together. For feed, these feeds are usually put directly into the breeding ponds, but there are some differences in the size of the materials, and different sizes of materials are fed with different sizes. Therefore, it is necessary to screen and classify the materials, and now there is an urgent need for a device that classifies and screens according to particle size to solve the above-mentioned problems

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