Novel smashing and grinding technology and equipment

Abstract

The invention discloses novel smashing and grinding equipment which comprises a stander, at least two working plates and a thrust mechanism, and the novel smashing and grinding equipment is characterized in that one of at least two working plates is used as a fixing plate and is fixed on the stander, and the other working plates are used as movable plates; all the working plates are arranged in an adjacent manner, and a smashing cavity is formed between every two adjacent working plates, and an opening degree is formed; each smashing cavity is provided with an inlet and an outlet; the size of the opening degree of each smashing cavity is changed along with the change of a relative position between every two adjacent working plates; the thrust mechanism is fixed on the stander or is fixed between the stander and each movable plate; and the thrust mechanism is connected with or separated from the movable plates. Compared with conventional smashing grinding equipment, the novel smashing and grinding equipment has the advantages that straight thrust uniformly acts on the fixing plate and the movable plates of the smashing cavities, so that respective particles of the materials can adaptively reach mechanical dynamic balance under stress, and the particles are smashed by relatively uniform squeezing force; and due to the smashing of the materials, a processing method for replacing grinding by smashing is really realized.

Description

technical field [0001] The invention belongs to the field of crushing and grinding, and in particular relates to a novel crushing and grinding process and equipment thereof. Background technique [0002] The crushing and grinding device of common materials is to change the material from a large size to a required size by means of chopping, breaking, grinding, grinding and impact principles, generally by two principles or more than two principles When the methods are combined and broken, almost all the materials are processed to a suitable size by crushing first, and then the materials are processed to the required particle size by grinding. Among them, the jaw crusher uses the extrusion force between a reciprocating jaw plate and a fixed jaw plate to crush the material. The material is crushed, crushed and bent during the crushing process. The energy of this crusher is The utilization rate is low, the product particle size can only reach a few millimeters at its finest, and...

AI Technical Summary

Problems solved by technology

Among them, the jaw crusher uses the extrusion force between a reciprocating jaw plate and a fixed jaw plate to crush the material. The material is crushed, crushed and bent during the crushing process. The energy of this crusher is The utilization rate is low, the product particle size can only reach a few millimeters at its finest, and materials with specifications below a few millimeters can only be achieved by using other grinding methods; roller presses (extrusion mills) or roller crushers are relatively crushed by rollers. The rotation of the jaw plate or the relative rotation of the two pressure rollers produces extrusion force, shear force and grinding force on the material to achieve the purpose of extrusion crushing, splitting and crushing. This kind of roller press (extrusion mill) or crushing During the working process of the machine, the force on the material is relatively complicated. Although the grinding function can be realized, the controllability of the particle size of the material is low, and over-grinding is easy to occur; the impact crusher uses the crushing space in the casing to rotate at a high speed. The hammer head hits the material from bottom to top, and at the same time, the impacted material hits the impact plate and rebounds to be crushed. The material flies in the crushing space, and also collides with each other to shatter itself. The material is impacted, split and shattered during the crushing process. , the self-grinding phenomenon of the material is very serious, and the product particle size is still at the millimeter level, and the grinding fineness cannot be achieved.

[0003] The disadvantages of the above crushing and grinding equipment are: (1) The pincer angle required by the roller press (extrusion mill) or roller crusher is demanding, the friction between the material particles and between the material and the roller is serious, and the material is crushed. If the compression volume ratio is too large, it is easy to cause extrusion into blocks, excessive unqualified fine powder and poor particle size controllability; (2) Most crushers are subjected to various forces during the working process, and the particle size distribution is wide and the controllability is poor. (3) Most crushers are prone to over-crushing and over-grinding during the crushing process; (4) The self-grinding phenomenon is serious during the crushing process, and qualified materials are easily crushed again or multiple times, and ground to unqualified Ultrafine powder; (5) Due to the low controllability of most crushers, the crushing area of ​​the crushing body is unevenly stressed and severely worn; (6) Most crusher materials are easily impacted, so when dealing with explosive materials low security

The current methods to solve the above problems are focused on changing the shape of the crushing cavity, adopting more crushing and less grinding processes as much as possible, adjusting the appropriate crushing force or grinding force, and trying to remove qualified materials in time to avoid more over-crushing or over-grinding and other measures. In fact, although these methods can reduce the rate of unqualified products to a certain extent, achieve more crushing and less grinding of materials, and properly avoid over-crushing and over-grinding, but they cannot change the high level of unqualified products and strive for more crushing and less grinding. There are serious problems of abrasives and self-grinding, over-crushing and over-grinding during grinding. At the same time, it increases the difficulty of manufacturing and installation of equipment, and the investment of equipment. It has higher requirements for manufacturing, and it will also bring some other unforeseen problems.

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