CN2319141Y - Equal-thickness screen surface with quick lines - Google Patents

Abstract

The utility model discloses a Jiexian equal-thickness screen surface for material screening equipment. The screen surface is a three-segment structure, including a discharging end screen surface, a middle screen surface and a feeding end screen surface. The three-segment screen surface is combined to form a Jiexian equal-thickness screen surface. The discharging end screen surface and the middle screen surface are linear screen surfaces, and the feeding end screen surface is a curved screen surface. The shape of the curve is a Jiexian. The screen surface realizes thin-layer screening of materials at the feeding end and has the advantages of easy processing and high screening efficiency.

Description

Fast line equal thickness sieve surface

The utility model relates to a screen surface of material screening equipment.

At present, there are two types of screen surfaces for material screening equipment. One is the linear screen surface, which is widely used. The main problem is that the thickness of the material on the screen surface is inconsistent along the screen length direction, and the other is the curved screen surface. Sieve surface, the main representative forms of curved sieve surface are equal thickness sieve surface, broken line sieve surface and curved sieve surface. The material at the feeding end is too thick.

The purpose of this utility model is to solve the shortcomings of the existing sieve surface form when screening materials, which causes the material thickness at the feed end to be too large, and the feed end loses the screening effect, thereby designing a screen surface of equal thickness , so that the material at the feeding end of the screen surface moves quickly, and the screening effect of the screen surface at the feeding end is exerted.

The purpose of this utility model is achieved through the following scheme, based on the screening theory that the material forms three main screening areas along the length direction of the screen surface on the screen surface, the screen surface is a three-section structure, the discharge end screen surface, the middle The sieve surface, the feed end sieve surface, and the three-stage sieve surface combine to form the sieve surface of the utility model. For the screen surface at the discharge end, since there are few fine particles and more coarse particles on the screen surface of this section, the coarse particles hinder the sieving of fine particles. Small linear sieve surface, the middle sieve surface has a thinner material layer and more fine particles, and it is relatively easy for particles to pass through the screen. The middle sieve surface adopts a straight line with a longer screen surface and a larger inclination angle than the discharge end screen surface. Type screen surface, the screen surface at the feeding end, because the material layer is too thick, it is difficult for particles to jump on this section of the screen surface, the screen surface at the feeding end is a curved screen surface, and the curved shape should make the material pass through the screen surface quickly to ensure The thickness of the material on the screen surface of this section is relatively thin, and the screening effect of the screen surface at the feeding end is exerted, and the curve shape of the screen surface is a fast line. The shape of the entire sieve surface is formed by reciprocating the strings and sieve wires through the holes on the sieve state.

Compared with the prior art, the utility model has the following advantages: ①The curve equation of the screen surface at the feeding end can be theoretically given, so that the processing is easy; ②The screen surface at the feeding end is utilized, and the thin layer screen of the material at the feeding end is realized. 3. Equal thickness screening is realized, and the screening efficiency of the entire screen surface is greatly improved.

Description of drawings:

Fig. 1 is the structural front view of the present utility model.

Fig. 2 is a structural top view of the utility model.

The utility model is described in further detail below in conjunction with the embodiments given in the accompanying drawings: the equal-thickness screen surface of the fast line is composed of three sections of screen surface 1 at the discharge end, screen surface 2 at the middle section and screen surface 3 at the feed end. , the screen surface 1 at the discharge end adopts a linear screen surface with an inclination angle of α ₁ , and the angle of α _{1 is} relatively small. The length of the surface 1, the inclination angle α ₂ > α ₁ , the screen surface 3 at the feeding end is a curved screen surface, and the shape of the curve is a straight line.

Claims (1)

1. brachistochrone uniform thickness compass screen surface that is used for material screening equipment, it is characterized in that: in conjunction with formation, discharge end compass screen surface (1) is an inclination alpha to this compass screen surface by discharge end compass screen surface (1), stage casing compass screen surface (2) and (3) three sections compass screen surfaces of feeding end compass screen surface ₁The linear pattern compass screen surface, α ₁Angle is less, and stage casing compass screen surface (2) is an inclination alpha ₂The linear pattern compass screen surface, the screen length of middle-end compass screen surface (2) is greater than the length of discharge end compass screen surface (1), screen angle α ₂＞α ₁, feeding end compass screen surface (3) is the shaped form compass screen surface, and curve shape is a brachistochrone, and whole compass screen surface shape is formed by the boring in the back and forth interspersed sieve of the string silk screen nation.

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