Static environment-friendly automatic grading sand screening machine

Abstract

The invention provides a static environment-friendly automatic grading sand screening machine comprising a storage tank. The storage tank is composed of an inlet channel, a storage tank arm and an outlet channel, the storage tank is of a sealed structure, a distributor is arranged in the storage tank, the bottom of the distributor is connected with a screen surface, sand distribution holes are disposed in the screen surface, filter screens are arranged below the sand distribution holes and include a coarse sand screen, a 40-mesh screen, a 60-mesh screen, a 80-mesh screen and a 100-mesh screen which are arranged sequentially from top to bottom and parallel pairwise, vertical distance between every two screens is 100mm, the coarse sand screen, the 40-mesh screen, the 60-mesh screen, the 80-mesh screen and the 100-mesh screen are all connected with corresponding outlet pipes, and an angle between each filter screen and the vertical direction is 42-43 degrees. The static environment-friendly automatic grading sand screening machine adopts enclosed screening and grading, and is environment friendly and energy saving.

Description

technical field [0001] The invention relates to a device for screening mixed sand into particles of different sizes, in particular to a static environmental protection automatic grading sand screening machine. Background technique [0002] Existing sand making classifiers are generally open vibrating screens, and its structure includes a motor, a classifying wheel and a body. During normal operation, the motor is started, and the raw materials are screened into particles of different sizes after passing through the classifying wheels at all levels; the method has the following disadvantages : 1. Power consumption and energy consumption; 2. The dust is very large and the pollution is serious, which affects the health. [0003] The Chinese patent application No. 94105834.4 discloses an invention patent named "classifier", which includes two coaxial conical shells inside and outside, an outer shell shell cover and a plurality of rotating parts located on the top edge of the inn...

AI Technical Summary

Problems solved by technology

[0002] Existing sand making classifiers are generally open vibrating screens, and its structure includes a motor, a classifying wheel and a body. During normal operation, the motor is started, and the raw materials are screened into particles of different sizes after passing through the classifying wheels at all levels; the method has the following disadvantages : 1. Power consumption and energy consumption; 2. The dust is very large, the pollution is serious, and the health is affected

[0003] The Chinese patent application No. 94105834.4 discloses an invention patent named "classifier", which includes two coaxial conical shells inside and outside, an outer shell shell cover and a plurality of rotating parts located on the top edge of the inner shell. Swirling blades, fine product discharge pipes are provided with many vertical slots within the range of the height of the separation area, the width of which gradually increases from the top to the bottom, the size of the sieved particles is not uniform, and the sieved particles are not uniform in size. Less grading and rougher workmanship

[0004] The Chinese patent with the application number 201210048962.5 discloses an invention patent named "counterflow classifier", which includes a body on which a classifying wheel driven by a power device is arranged, and the classifying wheel is located in the body. The body is provided with a cyclone feeding cover, and the cyclone feeding cover is provided with a feeding port, and the feeding port is arranged along the tangential direction of the body and is located at the position of the classifying wheel. The following defects exist in its classification: 1. The power device is used to drive the grading wheel, which consumes energy, which is not conducive to the national call for energy conservation and emission reduction; 2. The graded products are not fine enough

[0005] Chinese patent application number 96121046.x discloses an invention patent named "classifier", which disperses raw materials around a rotating separator body with many grading sheets arranged in a ring and exposes raw materials to rising classifying airflows, In order to sieve out the coarse powder that cannot be brought into the classification air flow, a dispersing tablet for receiving and dispersing the raw material from the inlet is arranged between the separator body and the raw material inlet above the separator body, the said disperser The sheet rotates at a different speed than the main body of the separator, and the main body of the separator is supported by a rotating shaft driven by an engine; its disadvantages are: 1. It consumes power energy and increases operating costs; 2. When the dispersing sheet is used to rotate, the dust is very Large, serious pollution, affecting health; 3. The size of the classified particles is uneven

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