Quick crushing equipment for silicon nitride

Abstract

The invention discloses quick crushing equipment for silicon nitride. The quick crushing equipment for silicon nitride comprises a fixing part and a rotating part. The fixing part comprises a mountingbody. A plurality of independent grinding cabins are uniformly arranged in the mounting body in a horizontal axis direction. Screens are arranged at openings of the bottoms of the grinding cabins. Through holes are formed between adjacent grinding cabins. Fixed grinding plates are fixedly arranged in the through holes. The rotating part is further arranged in the mounting body. The rotating partcomprises movable grinding plates rotatably mounted in the grinding cabins. The axes of the movable grinding plates and the grinding cabins are superposed, and the circumferential surfaces of the movable grinding plates are in contact with the inner walls of the grinding cabins. The movable grinding plates move in a reciprocating manner in the axis directions. The quick crushing equipment for silicon nitride impacts and grind raw materials simultaneously by means of joint action of the movable grinding plates and the fixed grinding plates combining axial motions with reciprocating motions, andby matched with synchronization effects of the screens, it is ensured that product particles reach a standard.

Description

technical field [0001] The invention relates to the technical field of silicon nitride production equipment, in particular to a rapid crushing equipment for silicon nitride. Background technique [0002] Silicon nitride is an important structural ceramic material. It is a superhard substance, inherently lubricious, and wear-resistant, and is an atomic crystal; it resists oxidation at high temperatures. Moreover, it can also resist cold and heat shocks, and it will not shatter when heated to above 1000°C in the air, cooled rapidly and heated again sharply. It is precisely because silicon nitride ceramics have such excellent characteristics that people often use it to manufacture mechanical components such as bearings, gas turbine blades, mechanical seal rings, and permanent molds. [0003] When crushing silicon nitride, there is a problem of incomplete crushing, that is, the silicon nitride particles are stuck in the gap of the crushing hammer, so that it cannot be directly...

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Problems solved by technology

[0003] When crushing silicon nitride, there is a problem of incomplete crushing, that is, the silicon nitride particles are stuck in the gap of the crushing hammer, so that it cannot be directly affected by the crushing hammer, resulting in larger particles of the finished product, and the impact crushing method is adopted , the final product has a large particle size and different specifications, it is difficult to process into finer silicon nitride powder

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