Crusher

Abstract

The invention discloses a crusher. The crusher comprises a hopper, a driven crushing roller, a driven crushing roller as well as a driving device, wherein the driving device is used for driving the driving crushing roller to rotate; the driving crushing roller and the driven crushing roller can be rotationally installed in the hopper and are connected by a transmission mechanism, and both comprise roller shafts and a plurality of crushing gear rings connected to the roller shafts sequentially at intervals; each crushing gear ring is provided with a plurality of crushing teeth which are arranged uniformly around the axes of the roller shafts; all the crushing gear rings are sequentially divided into more than two sections along the axis direction of the roller shafts; the relative rotation angles of the crushing gear rings at the same section around the axes of the roller shafts are zero; the two adjacent sections of crushing gear rings have relative rotation angles around the axes of the roller shafts. The crusher has the advantages of simple structure, good crushing effect, high crushing efficiency, uniform stress, stability and reliability in running, capability of lowering the energy consumption and the like.

Description

Technical field [0001] The invention relates to the technical field of crushing machinery, in particular to a crusher. Background technique [0002] The production of fluorine chemical products is divided into two processes: wet process and dry process. The wet process will produce a large amount of wet fluorogypsum, which emits about 4 tons of fluorogypsum per ton of hydrofluoric acid. In addition, wet fluorogypsum is generally treated by building embankments and stacked naturally. As time goes by, anhydrous gypsum is gradually transformed into a certain amount of crystal water (15-18%), attached water (15-40%), sulfur trioxide ( 30-40%), layered blocky plaster with a certain hardness (1-8MPa). Scientific research and production practice have proved that fluorogypsum can completely replace natural gypsum as a cement retarder to realize the purpose of turning waste into treasure and recycling resources. However, there are many problems in the process of fluorogypsum crushing an...

AI Technical Summary

Problems solved by technology

However, there are many problems in the crushing and utilization of fluorogypsum. Currently, jaw crushers, chain crushers, hammerhead crushers, and ordinary roller crushers all have many deficiencies. For example, jaw crushers are not suitable for Viscous materials with high moisture content; when chain crushers and hammer crushers break fluorogypsum with high moisture content and high viscosity, the casing is very sticky and difficult to handle

When breaking fluorine gypsum with low moisture content, due to the high speed, the dust will be large, and because the high-speed rotating chain and the hammer head are prone to large vibrations under the condition of eccentric feeding, the equipment is easy to be damaged, and the maintenance cost is high. There are chains and hammer heads that break due to fatigue strength and fly out to hurt people, causing safety accidents; ordinary double-roll crushers and toothed double-roll crushers have complex structures, high maintenance costs, high noise, and large dust from dry material crushing, etc. shortcoming

The above equipments all have the problem of needing a coarse crushing process before further fine crushing. There are disadvantages such as long whole crushing process, many equipments, poor environment and high production cost, which greatly limit the processing and utilization of fluorogypsum. At present, there is no Specialized wet fluorine gypsum crushing and processing machinery

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