A screening method and vibrating screen

Abstract

The invention discloses a convenient, efficient and reliable screening method and a vibrating screen, and belongs to the technical field of material screening. The vibrating screen comprises a screen frame, a mesh rack, a screen mesh and mesh tightening hoop strips, wherein the mesh rack is positioned in the screen frame; the vibrating screen is characterized in that the screen tightening hoop strips are arranged on the inner wall of the screen frame, through holes are arranged in positions, which correspond to the screen tightening hoop stripes, on the screen frame, and the end parts of the screen tightening hoop stripes can penetrate through the through holes; the screen mesh can be firstly and smoothly placed on the mesh rack when the screen mesh is replaced, the screen frame can fall after being placed on the screen mesh, and the screen mesh is enabled to be attached to the outer wall of the mesh rack after being downwards bent by the screen frame; the end parts of the mesh tightening hoop strips are connected with a tightening device, and the mesh tightening hoop strips can be tightened by operating the tightening device. According to the vibrating screen disclosed by the invention, the screen frame and the mesh tightening hoop strips are in an integrated structure, thus only the screen mesh needs to be smoothly placed on the upper end of the mesh rack when the screen mesh is replaced, the screen frame can fall for one time after being placed on the screen mesh, the screen mesh can be attached to the outer wall of the mesh rack after being bent by virtue of the vertical falling of the screen frame, the screen mesh does not need to be bent manually, and the skill level of an operator is not required.

Description

technical field [0001] The invention belongs to the technical field of material screening, and in particular relates to a vibrating screen. Background technique [0002] Enterprises widely use vibrating screens to sort materials. Commonly used vibrating screens include structural components such as screen frames, grid frames, screen meshes, stretching hoops, springs connected to the screen frames, and vibration motors. The screen is vibrated by starting the vibrating motor, so that the small particles pass through the screen and leak down, and the large particles are blocked on the screen. The screen used in the vibrating screen is generally woven with metal wire, nylon wire, etc. The screen is a vulnerable part and needs to be replaced after a period of use. The important factors affecting the use effect of the vibrating screen are whether the screen can be tightened and whether the material can be evenly distributed - the tighter the screen, the better the vibrating scre...

AI Technical Summary

Problems solved by technology

[0012] (1) Due to the fast flow rate of the slurry, when the slurry is poured from a certain height to the screen, it will have a greater impact on the screen, which is easy to cause damage to the screen and affect the service life of the screen.

[0013] (2) When the slurry is poured on the screen, the speed is fast, so that the screen has no time to screen the slurry, so more and more slurry will be poured on the screen, and the pressure generated by too much slurry will also cause Damage to the screen and increase the burden on the vibrating motor, reducing the service life of the vibrating screen

[0014] (3) The slurry falls at a faster speed, so it splashes around after falling on the screen, which pollutes the environment of the workplace and also causes a waste of slurry

Although the addition of screens solves the problem of single-layer screens falling, it also brings new problems: when the vibrating motor is working, some materials will inevitably be retained between the two layers of screens, which affects the screening of materials; and Due to the different amplitudes of the two layers of screens, the upper and lower screens will constantly collide during vibration, resulting in vibration friction, and the material friction between the two layers of screens will cause great wear and tear on the screens.

[0017] In the industry, researchers have not found a good solution to how to make the material fall onto the screen slowly and evenly without causing the screen to fall, and to enable the screen to be quickly replaced and tightened effectively when it is damaged. Method

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