Sieve box with nonplanar pit type sieve faces

Abstract

The invention relates to a sieve box with nonplanar pit type sieve faces, which comprises a sieve frame (1), a nonplanar weaved sieve (2) and an installing pressure plate (3). The nonplanar weaved sieve (2) punched with sieving through holes of the same size is machined into array type half sphere crown shaped or half elliptical sphere shaped or cubic pit structures in different sizes and is fixedly installed on the inner side of the bottom of the sieve frame through the installing pressure plate (3) by using a mechanical method. Nonplanar weaving type sieve cloth (2) with the same size of grid through holes can also be installed on the inner side of the bottom of the sieve frame. The sieve box with nonplanar pit type sieve faces has three-dimensional sieving property in the vertical, horizontal and lateral directions, and the effective sieving surface area is increased; the sieve box has the advantages of difficult hole clogging, good sieving property, high sieving efficiency, easy machining and manufacturing and the like and is a novel and efficient sieve box.

Description

technical field [0001] The invention relates to a screen box with a non-planar pit-shaped screen surface. Specifically, it provides a three-dimensional screen screen with high screening efficiency, not easy to block holes, good screen penetration, and practical and simple for various vibrating screens. screen box. Background technique [0002] Vibrating screens are widely used in mining, metallurgy, coal, petrochemical, water conservancy and electric power, light industry, construction, transportation and other industrial sectors for raw material classification operations. It is an important industrial basic equipment. [0003] The screen surface is the working surface where the screen box of the vibrating screen directly contacts the material. The structure and shape of the screen surface have a decisive impact on improving screening efficiency and productivity, saving energy and reducing production costs. They are all planar screen surfaces such as plate-shaped screen su...

AI Technical Summary

Problems solved by technology

[0003] The screen surface is the working surface where the screen box of the vibrating screen directly contacts the material. The structure and shape of the screen surface have a decisive impact on improving screening efficiency and productivity, saving energy and reducing production costs. They are all planar screen surfaces such as plate-shaped screen surface (sieve plate), bar screen surface, wire woven screen surface and non-metallic screen surface. The research focus on the structure and form of the screen surface is generally the number of openings. , The structure, shape (circle, square, hexagon, rectangle) of the sieve hole and the improvement of its size, did not pay attention to the influence of the overall sieve surface structure shape on the screening efficiency; some scholars explored and studied the combination of broken lines and arcs. Type multi-section screen surface [ZL03213164X], fast-line equal-thickness screen surface [ZL97243275.2] and other new screen surfaces, but basically they are still flat screen surfaces. Due to the difficulty in design and manufacture, it is difficult to popularize and apply; the patent application literature introduces a A corrugated sieving surface mainly used in cigarette production [200810070181.X], which can improve the sieving rate, but its design and manufacture are also relatively difficult, and the use surface is also limited

After observation, it is found that the characteristics of the flat screen surface are: the material can only pass through the screen surface from top to bottom, and it only has one-dimensional screen penetration, and its effective screening surface area is small, which is the cause of the present situation. One of the main reasons for the low screening efficiency of vibrating screens

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