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CN-121972271-A - Centrifugal engagement type pulverizer

CN121972271ACN 121972271 ACN121972271 ACN 121972271ACN-121972271-A

Abstract

A centrifugal meshing type pulverizer comprises a shell, a meshing type rotary table, a flow dividing cover and a grading wheel, wherein main rotary table teeth and gear ring teeth are meshed with each other to form a meshing gap, an arc-shaped material guiding strip of a cyclone material guiding plate is used for guiding materials to the meshing gap by utilizing centrifugal force, a first annular channel is formed between an outer ring and an intermediate ring, a second annular channel is formed between the intermediate ring and the inner ring, a plurality of arc-shaped baffle plates are arranged in the first annular channel, the grading wheel is arranged above the flow dividing cover and matched with the inner ring, and the grading wheel drives airflow to form guiding airflow in the second annular channel. The invention effectively solves the problem of inefficiency of the existing pulverizer when processing fiber dry materials by combining centrifugal force, biting force, cyclone guiding and an accurate material classification system, and obviously improves the pulverizing efficiency and classification accuracy of the equipment by an optimized cyclone flow field, a material backflow mechanism and an airflow control system.

Inventors

  • CHEN YIJIE
  • CHEN JINGXIONG
  • ZOU MENGHUA

Assignees

  • 湛江市恒润机械有限公司

Dates

Publication Date
20260505
Application Date
20251203

Claims (10)

  1. 1. A centrifugal occlusion type pulverizer is characterized by comprising a shell, an occlusion type rotary table, a flow dividing cover and a grading wheel, The meshing type rotary table is arranged in the shell and comprises a main rotary table and a gear ring, wherein a plurality of main rotary table teeth are arranged at the edge of the main rotary table, a plurality of gear ring teeth are arranged on the inner side of the gear ring, and the main rotary table teeth and the gear ring teeth are meshed with each other to form meshing gaps; the cyclone material guide plate is arranged above the engagement type turntable, and is provided with a plurality of arc material guide strips which are used for guiding materials to the engagement gap by utilizing centrifugal force; The split cover comprises an outer ring, a middle ring and an inner ring which are mutually sleeved, a first annular channel is formed between the outer ring and the middle ring, a second annular channel is formed between the middle ring and the inner ring, and a plurality of arc-shaped baffle plates are arranged in the first annular channel; The classifying wheel is arranged above the flow dividing cover and matched with the inner ring, and the classifying wheel drives air flow to form guide air flow in the second annular channel and is used for guiding unqualified materials to fall back to the meshing gap to be continuously crushed; The middle shaft driving mechanism is arranged in the middle of the shell and comprises a driving motor, a first middle shaft and a second middle shaft, wherein the driving motor drives the occluding rotary table to rotate through the first middle shaft, and drives the split cover to rotate through the second middle shaft.
  2. 2. The centrifugal bite type pulverizer of claim 1, wherein the arc-shaped material guiding strips of the cyclone material guiding plate are outwardly refracted by taking the arc shape of the arc-shaped material guiding strips and the center of the circle of the main turntable as centers.
  3. 3. The centrifugal bite type pulverizer of claim 1, wherein the height difference of the arc-shaped material guide strips relative to the cyclone material guide plate main body is 8-15mm, and the ratio of the length of the arc-shaped material guide strips to the bottom diameter of the outer ring of the diversion cover is 1.8:1 to 2.2:1.
  4. 4. The centrifugal bite type pulverizer of claim 1, wherein the classifying wheel comprises a classifying wheel disc and a plurality of classifying blades, a floating edge is arranged at the upper end of each classifying blade, extends outwards and forms clearance fit of 0.5-2mm with the lower end face of the upper cover of the shell.
  5. 5. The centrifugal bite type pulverizer of claim 4, wherein an air pressure sealing area is arranged between the classifying wheel and the upper cover, and compressed air is introduced into the gap through a compressed air source to form an air curtain seal.
  6. 6. The centrifugal bite type pulverizer of claim 1, wherein the arcuate baffle comprises: the cyclone guide plates are arranged between the outer ring and the middle ring and are arc-shaped, two ends of the cyclone guide plates are respectively connected with the outer ring and the middle ring, and a cyclone channel is formed between two adjacent cyclone guide plates; The baffle plate is arranged between the adjacent cyclone guide plates, and the baffle plate protrudes towards the bending direction of the cyclone guide plates.
  7. 7. The centrifugal bite type pulverizer of claim 1, wherein the baffle plate is in a circular arc shape or a polygonal line shape, and the height of the protrusion of the baffle plate is 20-50mm.
  8. 8. The centrifugal bite type pulverizer as set forth in claim 1, wherein said cyclone guide plates are arranged in at least three and are distributed in central symmetry about the axis of said inner ring.
  9. 9. The centrifugal bite type pulverizer as set forth in claim 1, wherein the height of the cyclone guide plate is configured to gradually decrease in a gradient in the inner-ring-to-outer-ring direction.
  10. 10. The centrifugal bite type pulverizer of claim 1, wherein the outer ring is provided with a feed inlet, the top end of the inner ring is further provided with a discharge guide plate inclined towards the axis direction of the inner ring, and the bottom end of the outer ring is further provided with a return guide plate inclined outwards along the radial direction of the outer ring.

Description

Centrifugal engagement type pulverizer Technical Field The invention relates to the field of crushing equipment, in particular to a centrifugal engagement type crusher integrating high-strength engagement crushing, centrifugal material guiding and two-stage rotation blocking classification. Background At present, industries such as feed, chemical industry, pharmacy and the like put forward higher requirements on capacity, energy consumption, fineness and cost management and control of crushing equipment, and the crushing equipment is continuously updated. The existing pulverizer mainly comprises a hammer pulverizer, a fluted disc pulverizer, a pneumatic pulverizer and the like. For example, a toothed disc pulverizer, which performs material pulverization by high-speed rotation of a toothed disc. The pulverizer with the classifying function realizes the thickness separation through a classifying wheel. However, the prior art still has the following disadvantages: first, crushing efficiency and structural problems. The main turntable of the conventional pulverizer is mostly of a planar structure, and the reinforcing pulverizing effect in the radial direction is lacking. The existing equipment has insufficient shearing force and grinding force on fiber dry materials (such as wheat bran, rice husk, corn stalk, etc.), resulting in low grinding efficiency. In actual production, when the fiber materials are treated, the crushing efficiency is reduced by 40-50% compared with that of the particle materials, and the energy consumption is increased by more than 30%. Second, airflow control and wear problems. The circulation flow field of the materials in the traditional crushing cavity is disordered, and effective control and guide of ascending rotational flow of the materials are lacked. The material moves in the cavity in an unordered way, so that the crushing efficiency is reduced, and the inner wall of the outer ring is worn too quickly. According to statistics, the service life of the inner wall of the outer ring is usually only 3-6 months, frequent replacement is needed, and maintenance cost is increased. Third, the problem of grading effects. The existing flow distribution cover structure is too complex or too simple, and lacks an accurate material layering and backflow mechanism. The bottom area of the classifying wheel of part of the equipment forms a dead zone or a reactive loss zone, and meanwhile, a reliable sealing structure is lacked, so that unqualified coarse particle materials leak into a finished product, and the classification precision is difficult to ensure. In actual production, the proportion of unqualified particles in the finished product can reach 15-20%, and the quality of the product is affected. Fourth, energy consumption and noise problems. The existing equipment has unreasonable airflow organization and non-optimized material circulation path, so that the energy consumption is high. Meanwhile, the impact between the high-speed rotating part and the material generates large noise, and the working environment is bad. Therefore, a novel pulverizer which can efficiently pulverize fiber dry materials, has reasonable airflow organization, accurate classification, low energy consumption and small abrasion is needed. Disclosure of Invention The invention aims to overcome the defects of the prior art and provide a centrifugal occlusion type pulverizer, which effectively solves the problems of low efficiency, quick abrasion and inaccurate classification of the traditional pulverizer when processing fiber dry materials by combining centrifugal force, occlusion force, cyclone guiding and an accurate material classification system. The centrifugal bite type pulverizer is characterized by comprising a shell; The meshing type rotary table is arranged in the shell and comprises a main rotary table and a gear ring, wherein a plurality of main rotary table teeth are arranged at the edge of the main rotary table, a plurality of gear ring teeth are arranged on the inner side of the gear ring, and the main rotary table teeth and the gear ring teeth are meshed with each other to form meshing gaps; the cyclone material guide plate is arranged above the engagement type turntable, and is provided with a plurality of arc material guide strips which are used for guiding materials to the engagement gap by utilizing centrifugal force; The split cover comprises an outer ring, a middle ring and an inner ring which are mutually sleeved, a first annular channel is formed between the outer ring and the middle ring, a second annular channel is formed between the middle ring and the inner ring, and a plurality of arc-shaped baffle plates are arranged in the first annular channel; The classifying wheel is arranged above the flow dividing cover and matched with the inner ring, and the classifying wheel drives air flow to form guide air flow in the second annular channel and is used for guiding unqualified materials to fall b