Fluidized bed colliding airflow mechanical ultrafine pulverization equipment and method

Abstract

The invention provides a fluidized bed collision type airflow mechanical ultrafine pulverization equipment and method, comprising a frame, a feeding device on the frame, a primary pulverization device, a secondary pulverization device and a classification device, the primary pulverization device It is configured to exert an impact mechanical crushing effect, and its feed port is connected to the end of the feeding device. The primary crushing device includes a crushing turntable and an inner lining plate arranged outside the crushing turntable. There are multiple obliquely arranged impact crushing plates on the crushing turntable. The inner edge of the blade is provided with a plurality of protrusions; the secondary crushing device is configured to exert a collision airflow crushing effect, which is located on the upper side of the primary crushing device, and at least a part of the inner edge of the crushing chamber is sawtooth There are multiple nozzles distributed around the crushing chamber, which can form a centripetal reverse jet flow field inside the crushing chamber; the classifying device is arranged above the secondary crushing device and communicates with the crushing chamber. The present invention can improve crushing efficiency.

Description

technical field [0001] The invention belongs to the technical field of agricultural product processing, and in particular relates to a fluidized bed collision type airflow mechanical ultrafine pulverization equipment and method. Background technique [0002] Fruits, shells, rhizomes and other materials of many plants in the present invention have very high nutritional components, such as peanut shells, which are the shells of peanuts, and the polyphenols in the peanut shells mainly include flavonoids (mainly luteolin), Dihydroflavone (mainly eriodictyol), chromone (mainly 5,7-dihydroxychromanone), etc. have good medical, antibacterial and health effects. However, in the actual production process, peanut shells are mostly treated as garbage, some are directly burned, most are directly discarded, incinerated or used as roughage, and only a small amount is used to extract functional substances. Therefore, to improve the comprehensive utilization efficiency of peanut shells The...

AI Technical Summary

Problems solved by technology

[0004] The mechanical impact ultrafine pulverization device has a better pulverization effect on flake and fibrous materials, but the pulverization process will inevitably generate heat, which cannot pulverize heat-sensitive materials, and the particle size after pulverization is relatively large; airflow superfine pulverization After the device is crushed, the particle size distribution of the material particles is uniform, the dispersion is good, and there is no heat generation, but it is difficult for the airflow ultrafine crushing device to crush flake and fibrous materials

[0005] Among the above-mentioned traditional pulverizing devices, the single pulverizing method has very low working efficiency, and the particles after pulverization are unevenly divided and have poor dispersion; simple combined pulverizing devices, such as mechanical impact superfine pulverizing devices and airflow superfine pulverizing devices Combined use, the materials pulverized by the mechanical impact ultrafine pulverizer often cannot enter the airflow ultrafine pulverization device for pulverization in time, resulting in the accumulation of materials in the mechanical impact ultrafine pulverization device, and the airflow ultrafine pulverization device cannot work normally. Carry out crushing work; the simple combined crushing device fails to work well with the classifying device, resulting in the material particles that have reached the ultra-fine crushing requirements cannot be discharged in time, and even cause excessive crushing of the material particles, and the crushing efficiency is affected to a certain extent

The existing combined crushing device, airflow ultrafine crushing device crushing is often only crushed in the plane area of ​​the space, the crushing area is narrow, and the supersonic airflow cannot be fully used to crush the material; the crushed material is crushed under the action of the updraft Entering the classification device, the airflow gradually enters the classification area during the axial movement, which reduces the flow rate of the axial airflow in the classification area, resulting in partial separation of the particles in the classification area, making the particle concentration in the upper and lower areas of the classification area uneven and the particle size The size is not uniform, resulting in the shortcomings of uneven particle size distribution and poor dispersibility of the material after crushing and classification

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