Dispersing device for roller press

Abstract

The invention relates to a dispersing device for a roller press, which comprises a shell of which one side is provided with a feed inlet and the opposite side is provided with a coarse material outlet and a fine material outlet. A rotating wheel of which a wheel shaft is perpendicular to the feeding direction is arranged in the shell; the peripheral surface of the rotating wheel is peripherally and uniformly provided with a wear-resistant striking plate; the striking end face of the wear-resistant striking plate is arranged towards the feeding direction of materials; and the shell facing the striking end face of the wear-resistant striking plate is provided with a wear-resistant chain for receiving the materials struck and thrown up by the wear-resistant striking plate and carrying out impact on the materials again. A material cake squeezed by a fixed roller and a movable roller is dispersed by an impact force generated by high-speed rotation of the wear-resistant striking plate; the dispersed small material cake blocks crash into the wear-resistant chain at a high speed after being struck and thrown up; the wear-resistant chain impacts and finely crushes the small material cake blocks into material particles; and high-speed impact for twice enables the materials to be smashed into finer particles. The device can be far away from the movable roller and the fixed roller; and when the device is at a long distance with the movable roller and the fixed roller, the speed that the materials arrive at the wear-resistant striking plate is higher, the striking force is larger and the materials are more sufficiently smashed.

Description

technical field [0001] The invention relates to a dispersing device of a roller press, in particular to a dispersing device of a roller press suitable for mining, chemical industry, cement and other industries. Background technique [0002] The principle of the roller press is that the material to be ground is transported to the metering silo by the raw material conveyor, and the material in the metering silo enters the roller press at a uniform speed for rolling, crushing and screening to realize the separation of coarse and fine materials. Coarse material is discharged from the coarse material port and re-transported to the metering silo by the elevator; the fine material after sieving is discharged from the fine material outlet into the tube mill for grinding, and the ground fine powder is sorted by the powder classifier. The powder is transported to the finished product warehouse through the finished product conveyor; the unqualified slightly coarse powder is re-entered ...

AI Technical Summary

Problems solved by technology

This kind of structural system needs to drive a large breaking disc to rotate at high speed. The system consumes a lot of power, but it relies on centrifugal force to throw the material out. This not only requires a large breaking disc, but also the throwing speed of the material is low. In addition, the speed of the friction force on the surface of the dispersing disc is reduced, the crushing effect is not good, and the device is bulky

[0004] Another publication number is CN101905182, and the publication date is December 8, 2010. The Chinese patent application titled "Rolling, Breaking, and Classifying Integrated Machine" discloses a method that relies on two back-rotating gears to rotate between the fixed roller and the moving roller. The lower part of the roller breaks up the falling material by the rotating teeth, and then a part of the material is thrown and accelerated to hit the roller surface of the pressure roller (moving roller and fixed roller) for another crushing impact. Although this structure has two impacts, but Since the material dispersed by the gear will hit the surface of the pressure roller, the gear is not easy to be too far away from the fixed roller. In this case, the outer diameter of the gear should not be too large. The linear speed of the rotation of the gear with a small outer diameter is low. If the gear rotates The speed is low, the material can evenly fall on the surface of the gear, and the material crushing effect is better on the tooth surface, but because of the low speed of the gear, the ejection speed of the material acquisition is low, and the effect of the second impact on the roller surface is not good; if the gear is enlarged The rotating speed helps the material to obtain a higher ejection speed of the second impact, causing a part of the material after rolling to fall to the roller surface of the gear, and the second impact material that has been ejected moves to the roller surface together, which cannot make all the materials Both hit the tooth surface, resulting in a reduction in the crushing efficiency of the primary tooth surface, and at the same time reduce the ejection speed of the secondary impact of the material, so the gear speed should not be too high

Based on the above-mentioned series of reasons, the throwing speed of the material obtained by the gear is low, and the speed of hitting the roller is also low, so the crushing effect is naturally not good, and the surface of the roller is large, so the crushing effect on the material is not good.

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