High-efficiency fresh and wet biomass crusher and fixed knife system

Abstract

The invention discloses a high-efficiency fresh and wet biomass crusher and a fixed knife system. The high-efficiency fresh and wet biomass crusher mainly comprises a machine base, a crushing chamber,the fixed knife system, a rotor, a feeding port, a discharging port, a direct-coupled transmission mechanism and a motor. The fixed knife system is applied to the high-efficiency fresh and wet biomass crusher. The fixed knife system comprises fixed knives, a fixed knife rest and a fixed knife adjusting mechanism. The invention also discloses a coaxial fan applied to the high-efficiency fresh andwet biomass crusher. The coaxial fan comprises a blade shaft sleeve and three wing-type hollow blades. According to the high-efficiency fresh and wet biomass crusher, the fixed knife system and the coaxial fan, the specific design is made based on the physical characteristics of various fresh and wet biomass raw materials, the crushing efficiency is greatly improved, the crushing particle size distribution range of the materials is greatly reduced (the average particle size is 0.1-2.5 mm), the screening is not needed, and the high-efficiency fresh and wet biomass crusher, the fixed knife system and the coaxial fan can be widely applied to the fine crushing of the materials of crop straws, vines, vegetables, various herbages, traditional Chinese medicine residues and the like with differentmoisture contents, and have wide application prospects in the field of agricultural production.

Description

technical field [0001] The invention relates to the field of agricultural machinery, in particular to a high-efficiency fresh and wet biomass pulverizer and a fixed knife system. Background technique [0002] Since the beginning of the 21st century, with the rapid development of China's economy, the awareness of environmental protection has rapidly increased, the ecological cycle agricultural production model is in the ascendant, and the efficient utilization of various agricultural and forestry waste resources, by-products of food production, and by-products of traditional Chinese medicine production has become more and more efficient. The higher the attention, the renewable biomass raw materials such as various crop straws, vines, tail vegetables, traditional Chinese medicine residues, pastures, etc. are widely used in the production of animal feed and organic fertilizer. The cost of crushing is high and the loss is large. Therefore, the market demand for fresh and wet bio...

AI Technical Summary

Problems solved by technology

[0004] 1. Most fresh and wet plants are usually crushed and used for animal feeding. When used for monogastric animals, aquatic animals and poultry, a smaller crushing particle size is required, and the general requirement is below 3mm, which is difficult to achieve with this type of crusher in the market. The required crushing particle size or particle size distribution range is too large;

[0005] 2. The energy consumption of pulverization is high, which increases the production cost of fresh and wet biomass raw materials. The unit production energy consumption of this type of pulverizer in the market is generally as high as 20-50kwh / ton

However, there are the following problems in such a crushing method: the fixed knives are usually arranged circumferentially along the lower half of the crushing cylinder, and the limited number of arrangements results in limited shear points, that is, the number of shears that the material passes through when it falls is limited. In addition, the trajectory of the material falls Basically, it falls vertically, so the shearing angle of the material is basically unchanged each time it is cut, resulting in lower and lower efficiency of subsequent shearing and crushing. The material with insufficient degree is recycled and crushed

However, because the biomass material contains a lot of water, it cannot be piled up and sieved, otherwise it will stick together and block the screen.

Therefore, the existing pulverizers cannot be applied to the pulverization of biomass, especially the pulverization of biomass that requires a relatively small particle size.

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