Airflow mill main machine

Abstract

The invention provides an airflow mill main machine. The airflow mill main machine comprises an airflow smashing upper cover, an airflow smashing lower cover detachably connected with the airflow smashing upper cover and a main machine liner with smashing nozzles. The main machine liner comprises a liner side wall portion with the annular cross section and a liner bottom plate portion. The upper end of the liner side wall portion abuts against the airflow smashing upper cover, the lower end of the liner side wall portion is fixedly connected with the liner bottom plate portion, the lower surface of the liner bottom plate portion abuts against the airflow smashing lower cover, and the smashing nozzles are arranged on the liner side wall portion. The main machine liner is of an integrated structure, a limiting ring portion is arranged on the airflow smashing lower cover, and the limiting ring portion sleeves the main machine liner. The design is adopted for the airflow mill main machine,the main machine liner can be conveniently detached in necessary, thus, the main machine liner is cleaned, replaced and the like, then the airflow mill main machine is conveniently maintained, and different smashing requirements of the airflow mill main machine can be met by replacing main machine liners with different spraying angles.

Description

technical field [0001] The invention relates to the technical field of jet mills, in particular to a jet mill host. Background technique [0002] The working principle of the flat jet mill is usually: the air flow is accelerated into a supersonic airflow through the Laval nozzle and then enters the grinding chamber, and at the same time, the material is accelerated into the grinding chamber through the Venturi nozzle for synchronous grinding. Since the crushing nozzle and the crushing chamber are installed at an acute angle, the high-speed jet air drives the material to circulate in the crushing chamber, and the particles collide, collide, and rub against each other as well as between the particles and the corresponding wall to crush the material. Driven by the centripetal airflow, the fine particles are introduced into the central outlet pipe of the pulverizer and enter the cyclone separator for collection. The coarse powder is thrown to the surrounding wall of the grinding...

AI Technical Summary

Problems solved by technology

[0003] 1. The structure and main body of the existing equipment are usually airtight, and the parts used to enclose the annular air chamber cannot be disassembled and cleaned or cannot be easily disassembled. The annular air chamber is used to enter the Compressed air, which will increase the workload, work intensity, and difficulty of equipment assembly and reset during frequent disassembly and thorough cleaning, which is not conducive to the above work

[0004] 2. When crushing different materials, it is necessary to change the angle between the crushing nozzle and the crushing chamber. The structure of the existing equipment, the seat ring with the crushing nozzle is usually not removable or cannot be easily disassembled and reset, which makes the seat ring inconvenient replace

If the seat ring needs to be replaced to obtain a different angle of the pulverizing nozzle, the whole equipment usually needs to be exchanged, resulting in higher cost

[0005] 3. The material has certain friction with the cavity wall of the machine body during the crushing process, and the long-term work will cause certain wear and tear on the inside of the equipment. The inner wall of the existing equipment cavity usually has no lining or the lining is fixed with an adhesive. When the inside of the equipment is worn , usually cannot be replaced or the lining can only be replaced after removing the adhesive, so the replacement of the lining is difficult and difficult to operate, or directly choose to replace the whole equipment, resulting in a large loss of economic value

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