Screening, distributing and crushing machine

Abstract

The invention discloses a sieving, distributing and breaking all-in-one machine which comprises a casing (3), a sieving and distributing device (4) arranged at the top of the casing (3) and a discharge opening (9) formed in the bottom of the casing (3). A breaking device driven by a power device is arranged between the sieving and distributing device (4) and the discharge opening (9). The breaking device is of a four-pin-roller structure and comprises a primary double-pin-roller structure used for coarsely breaking materials and a secondary double-pin-roller structure used for finely breaking materials. The secondary double-pin-roller structure is arranged under the first double-pin-roller structure. The all-in-one machine integrates a sieving function, a distributing function and a breaking function, and is small in occupancy, low in operation cost and a few in fault point. Furthermore, the all-in-one machine is small in raised dust during working and can automatically clean out materials bonded to a work roller. In addition, the wind pressure difference between a feed opening and the discharge opening is greatly reduced, raised duct is avoided in a material breaking process, energy is saved, and the environmental friendliness is achieved. Even if the water content of materials is large, the materials cannot be bonded to pin rollers, and the pin rollers are prevented from being blocked and clamped.

Description

technical field [0001] The invention belongs to the field of crushing machinery, and in particular relates to a four-tooth roller crusher, which can be widely used in thermal power generation or coal chemical industry fields, especially in the industrial fields where a circulating fluidized bed boiler is used as a fuel device. Background technique [0002] Since the 1960s, fluidized bed boilers have been successively used in some power plants in my country. Because of their advantages of wide application of coal types, high degree of mechanization and automation, and low environmental pollution, they have been rapidly promoted to thermal power generation, coal chemical industry, etc. and other industrial fields. [0003] According to the coal combustion characteristics of the circulating fluidized bed boiler, the most suitable material for boiler combustion is coal particles rather than pulverized coal, which requires the material entering the circulating fluidized bed boiler...

AI Technical Summary

Problems solved by technology

[0004] According to the current process, the screening equipment, material distribution equipment and crusher are installed together at the front end of the feed port of the fluidized bed boiler to provide finished coal particles for the fluidized bed boiler. The structure is: the screening equipment, material distribution equipment and crusher are all Each occupies one floor, therefore, the whole crushing link requires at least three floors, which occupies a large area, requires high civil engineering investment, and the crushing process is relatively complicated; moreover, the screening equipment, material distribution equipment and crusher are relatively independent, and the entire crushing The number of equipment required for the work is large, not only the production cost is high and the maintenance cost is high, but also there are many fault points, which is not conducive to the smooth progress of production; furthermore, when the above-mentioned crusher is working, the entire crushing chamber and the feeding port will produce If the material has a high water content, it will stick to the crushing work roll, which will not only easily lead to greater resistance when the work roll is running, but also easy to block or even get stuck. After working for a period of time, it needs to Manually clean the work rolls after shutdown, greatly reducing work efficiency

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