Double-roll crusher

Abstract

The double roller crusher for crushing mineral in mine, metallurgical and building material industry includes frame, and fixed roller and movable roller installed on the bearing seats on the frame. It features the crushing cavity formed with the shaft shoulders on the rollers, the driving unit installed on the fixed roller, and the sync board installed on the back of the movable roller bearing seats, with bottom hinged to the bottom frame and back pushed with the pressure unit on the frame. The present invention has the advantages of simple structure, saving in power, sync shift of the movable roller bearing seats, no 'edge effect' in the side baffles on roller ends and long service life.

Description

technical field [0001] The invention relates to a roller crusher and a high-pressure roller mill used in mining, metallurgy, building materials and other industries. technical background [0002] Roller crushers and roller mills currently used in mining, metallurgy, building materials and other industries are generally representative of the roller presses produced by KHD in Germany. It installs two equal-rotating rollers on the bearing seat of the frame, one of which is a fixed roller, which cannot move on the frame, and the other is a movable roller, which can move towards the direction of the fixed roller on the frame. The bearing seats at both ends of the movable roller are respectively tightened by two sets of hydraulic cylinders to provide pressure for the crushed materials. There is a certain gap between the two rollers, and baffles are fixed on both sides, forming a crushing cavity with the gap between the two rollers. The drive forms include double-motor double-rol...

AI Technical Summary

Problems solved by technology

[0004] 2. The two bearing seats of the movable roller are tightened with a set of hydraulic systems respectively. When the material is mixed with hard-to-break iron, the material is uneven, the material is segregated or one side is insufficiently fed, the movable roller cannot move in translation, resulting in Problems such as tilting, baffle damage, hydraulic cylinder strain, excessive deflection angle of the bearing ring, etc.

Some people use hydraulic electrical appliances to realize automatic synchronization to solve this problem, but the control system is very complicated and the reliability is low

[0005] 3. The material at both ends of the crushing chamber and the baffle are always in a state of sliding friction, which makes the baffle and the two ends of the roller very easy to wear and aggravates the "edge effect". It needs to be replaced and repaired frequently. If it is not repaired in time, the wear of the roller body will gradually deteriorate. The closer the middle, the shorter the effective crushing cavity, the crushing of materials on both sides cannot meet the requirements, affecting the production efficiency and the stability of the parameters of the grinding system

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