Efficient screening device

Abstract

The invention discloses an efficient screening device. The efficient screening device comprises a bracket, a circular screen frame and a screen mesh fixed on the screen frame, wherein the screen frame is arranged on the bracket through a supporting spring; an upper screen cover and a lower screen cover are respectively arranged above and below the screen frame; an upper discharge hole and a lower discharge hole are formed in the sides of the upper screen cover and the lower screen cover; the screen frame is driven and vibrated by a vibrator, wherein the upper part of the upper screen cover is further fixedly connected with the circular cone-shaped upper screen mesh through a connecting rod, the pore diameters of the screen holes of the upper screen mesh are greater than that of the screen holes of the screen mesh, and a discharge port of the upper screen mesh is formed in the side of the upper screen cover. The efficient screening device is simple in structure, materials are fallen off closely to the screen mesh under the effect of gravity by arranging the circular cone-shaped upper screen mesh, and the materials can be primarily selected during the process, so that the blockage of large materials can be reduced, small materials can be scattered, the screening efficiency of the screen mesh below is effectively improved, and meanwhile the deformation of the screen mesh caused by the materials too concentrated on the center of the screen mesh is also prevented.

Description

technical field [0001] The invention relates to the technical field of recycling equipment for waste circuit boards and cables, in particular to a screening device for screening crushed materials. Background technique [0002] At present, in the process of recycling waste wires, cables and circuit boards, the plastic and copper metal are usually separated by crushing first, and then the crushed materials are screened according to the size through the screening process, and the screened small materials are passed through a shaker, etc. Further sorting is carried out, and large materials are re-crushed. [0003] In the screening process, manual sorting is traditionally used, which is inefficient and labor-intensive. In order to solve this problem, people designed a vibrating screen afterwards, such as the Chinese invention patent whose application number is 201120103865.2, which discloses a vibrating screen, including a support and a circular screen frame, and the screen fram...

AI Technical Summary

Problems solved by technology

But in the process of use, there are still the following problems: 1. Since the materials enter from the upper feeding port and fall directly to the middle of the screen, the large and small materials overlap together and the plastic blocks of the circuit board will block the screen holes. Low screening efficiency

2. The material is concentrated in the middle of the screen, which is easy to deform and drop the center of the screen. The material is not easy to disperse during screening, which affects the screening efficiency and reduces the service life of the screen.

3. The volume and weight are large, it is not easy to move, and in the process of use, if the ground is uneven, it is easy to produce offset sliding

Images