Mine-used inspection vibrating screen

Abstract

The invention discloses a mine-used inspection vibrating screen, comprising a rack as well as a secondary linear vibrating screen and a tertiary linear vibrating screen which are respectively connected with the rack by virtue of elastic support elements, wherein the secondary linear vibrating screen and the tertiary linear vibrating screen are respectively provided with a vibration exciter, an oversize product discharge hole of an upper screen of the secondary linear vibrating screen, a screening discharge hole of a lower screen of the secondary linear vibrating screen and all of discharge holes of the tertiary linear vibrating screen are respectively provided with one material box, the oversize product discharge hole of the lower screen of the secondary linear vibrating screen is communicated with a feeding hole of the tertiary linear vibrating screen, and mesh sizes of screens in three layers of the tertiary linear vibrating screen are between the mesh size of the upper screen of the secondary linear vibrating screen and the mesh size of the lower screen of the secondary linear vibrating screen. In the invention, the two linear vibrating screens can be operated without mutual interferences, the material blocking on a screen surface and the material loss are difficult to happen, and the screening accuracy is high.

Description

technical field [0001] The invention relates to a vibrating screen suitable for sintering, pelletizing and various block materials in the metallurgical industry. Background technique [0002] In the screening inspection of sinter and pellets, generally one sample needs six particle size data inspection reports. It is necessary to screen out the particle sizes larger than 40mm and smaller than 5mm, and then screen out 40-25mm and 25-16mm , 16-10mm and particle size below 10mm. 40-25mm, 25-16mm, 16-10mm grain grades are used for drum test, and other grain grades are only used for proportional analysis. In order to make its inspection conform to the sinter and pellet screening inspection standard GB8209-1987. [0003] There are currently two types of vibrating screens used for the above tests: [0004] The first type: overall combination structure [0005] 1. The screen body is designed to integrate the two screening directions into one. [0006] 2. It is impossible to sol...

AI Technical Summary

Problems solved by technology

[0006] 2. It is impossible to solve the mutual cancellation of the forces in the positive and negative directions during the screening process. Therefore, during the use process, the material stuck on the screen surface is severely screened once, and the screen surface is cleaned once. The accuracy of the screening inspection cannot meet the national standard.

[0007] 3. Because the sieve body is an integral structure, the size of the sieve body is large, so the vibration exciter used must be enlarged, which results in high noise of the equipment, serious dust pollution without closed devices, and seriously affects the health of operators.

[0010] Therefore, the environmental protection of the equipment is poor, the labor intensity is high, the equipment occupies a large area, and the screening time is long. Since two sets of vibrating screens are used to complete the screening inspection, the material will be missing when the material is transferred, and the inspection results will be inaccurate.

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