Extruding coal mill

Abstract

The invention discloses an extruding coal mill. The extruding coal mill comprises a coal mill top cover, an upper grinding disc, a lower pressing disc and a coal mill chassis, and the upper grinding disc is movably connected to the coal mill top cover, the lower pressing disc is arranged on the coal mill chassis, and the upper grinding disc comprises an upper pressing disc, hydraulic telescopic rods, a hydraulic telescopic machine and a controller, wherein the hydraulic telescopic rods, the hydraulic telescopic machine and the controller are connected with the upper pressing disc; and the upper pressing disc is in an inverted circular truncated cone shape, and multiple hydraulic telescopic rods are annularly arranged at the top of the upper pressing disc at equal intervals and are connected with the hydraulic telescopic machine. In the working process of the coal mill, the extruding effect of the grinding disc is good, feeding is conducted in place, and the drying is rapid; the air exhaust amount can be adjusted through an air suction device so as to control the discharge of pulverized coal, and the production requirements are met under the condition that the environment-friendly requirement is met; and a rotary scraping plate arranged on a grinding wheel can effectively remove coal blocks adhering to the grinding wheel, and the grinding efficiency of grinding wheel extrusion is improved.

Description

technical field [0001] The invention relates to an extrusion coal pulverizer. Background technique [0002] At present, one of the more competitive coal mills in the medium-speed coal mill market at home and abroad is the HP coal mill, and the other is the SM coal mill, and the two coal mills have their own advantages and disadvantages. The advantages of HP coal mills are simple structure, high operational reliability, convenient maintenance, short downtime and relatively low price; their disadvantages are that the grinding efficiency is not high enough, the air-to-coal ratio is too large, and the boiler efficiency cannot be fully utilized. The advantage of the SM coal mill is that it has high grinding efficiency, small air-to-coal ratio, and high concentration of pulverized coal. The SM coal mill can ensure higher efficiency of the boiler; its disadvantages are that the structure is relatively complicated, there are many castings, the ventilation resistance is large, and th...

AI Technical Summary

Problems solved by technology

The advantages of the HP coal mill are simple structure, high operational reliability, convenient maintenance, short downtime and relatively low price; its disadvantages are that the grinding efficiency is not high enough, the air-to-coal ratio is too large, and the boiler efficiency cannot be fully utilized

The advantage of the SM coal mill is that it has high grinding efficiency, small air-to-coal ratio, and high concentration of pulverized coal. The SM coal mill can ensure higher efficiency of the boiler; its disadvantages are that the structure is relatively complicated, there are many castings, the ventilation resistance is large, and the price is relatively comparative. high

Therefore, both types of coal mills have room for improvement, but there is no new type of coal mill that has both the advantages of both and discards its disadvantages.

Images