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CN-224208127-U - Rotary stirring superfine mill

CN224208127UCN 224208127 UCN224208127 UCN 224208127UCN-224208127-U

Abstract

The utility model provides a rotary stirring superfine mill which comprises a rotary cylinder assembly and a stirring shaft assembly, wherein the stirring shaft assembly is arranged in the rotary cylinder assembly, the rotary cylinder assembly comprises a rotary cylinder, a feeder and a feeding screw, the stirring shaft assembly is arranged in the rotary cylinder, a plurality of blanking holes are formed in the tail end of the rotary cylinder, the feeder, the feeding screw and a guide cone are sequentially arranged at the front end of the rotary cylinder, materials enter the feeding screw through a blanking pipe on the feeder and enter the rotary cylinder through the guide cone, the tail of the rotary cylinder falls into a shell under discharging ventilation through the blanking holes and is discharged, and the rotary cylinder is connected with the output end of a permanent magnet direct drive motor through a stirring coupling. The utility model grinds the superfine grinding material in the rotary cylinder body through grinding, kneading, shearing and extruding, thereby ensuring the superfine grinding effect and improving the material flow problem.

Inventors

  • ZHANG GUICAI

Assignees

  • 南京中材粉体工程科技有限公司
  • 南京钜力智能制造技术研究院有限公司

Dates

Publication Date
20260508
Application Date
20250521

Claims (9)

  1. 1. A rotary stirring superfine mill is characterized by comprising a rotary cylinder assembly and a stirring shaft assembly, wherein the rotary cylinder assembly is arranged on a support base (1), the stirring shaft assembly is arranged in the rotary cylinder assembly, the rotary cylinder assembly comprises a rotary cylinder (24), a feeder (6) and a feeding screw (7), the stirring shaft assembly is arranged in the rotary cylinder (24), a plurality of blanking holes are formed in the tail end of the rotary cylinder (24), the feeder (6), the feeding screw (7) and a guide cone (10) are sequentially arranged at the front end of the rotary cylinder (24), materials enter a discharge ventilation lower shell (23) through the blanking holes, the stirring assembly comprises a stirring bearing seat I (4), a stirring shaft (5), a stirring bearing seat II (18), a stirring shaft coupler (19) and a permanent magnet direct drive motor (20), one end of the stirring shaft (5) is connected with the stirring bearing seat I (4) and the other end of the stirring shaft assembly is connected with the output end of the permanent magnet direct drive motor (20), a plurality of small stirring discs (13) and a plurality of small stirring discs (14) are alternately arranged on the stirring shaft (5) in sequence.
  2. 2. A rotary stirring superfine mill as claimed in claim 1, wherein the bottom end of the rotary cylinder (24) is mounted on the front end riding wheel assembly (3) and the rear end is mounted on the riding wheel baffle wheel assembly (22).
  3. 3. The rotary stirring superfine mill according to claim 2 is characterized in that the front end riding wheel assembly (3) comprises front end riding wheels (3-1), front end bearing blocks (3-2), front end riding wheel assembly bases (3-3) and front end riding wheel shafts (3-4), wherein the front end riding wheel assembly bases (3-3) are fixed on a support base (1), the front end riding wheel assembly bases (3-3) are symmetrically provided with the front end bearing blocks (3-2), front end riding wheels (3-1) are arranged on each front end bearing block (3-2), front end faces of rotary cylinders (24) are connected with front end supporting wheel belt sleeves (8), front end wheel belts (9) are installed on the front end supporting wheel belt sleeves, and the front end wheel belts (9) are matched with the front end riding wheels (3-1).
  4. 4. The rotary stirring superfine mill according to claim 2 is characterized in that the supporting wheel retaining wheel assembly (22) comprises supporting wheel retaining wheel assembly bases (22-1), cycloidal pin gear motors (22-2), transmission supporting wheel couplings (22-3), supporting wheel bearing seats (22-4), transmission supporting wheel shafts (22-5), transmission supporting wheels (22-6) and retaining wheel assemblies (22-7), the symmetrically arranged supporting wheel retaining wheel assembly bases (22-1) are fixed on a support base (1), cycloidal pin gear motors (22-2) are arranged on each supporting wheel retaining wheel assembly base (22-1), the transmission supporting wheels (22-6) are arranged on the transmission supporting wheel shafts (22-5), two ends of the transmission supporting wheel shafts (22-5) are respectively arranged on the supporting wheel bearing seats (22-4), one ends of the pin gear motors (22-2) are connected with one ends of the transmission supporting wheel shafts (22-5) through the transmission supporting wheel couplings (22-3), wheel belts (15) are matched with two ends of the two cycloidal pin gear shafts (22-6), and the front supporting wheel retaining wheel assemblies (22-7) are arranged beside each other.
  5. 5. The rotary stirring superfine mill according to claim 1, wherein the stirring first plate (13) and the stirring second plate (14) are closely arranged together, and the stirring first plate (13) and the stirring second plate (14) are arranged in a 90-degree offset manner.
  6. 6. The rotary stirring superfine mill according to claim 1, wherein the filling rate of the small micro grinding media in the rotary cylinder is generally 40-60%.
  7. 7. A rotary stirring superfine mill according to claim 1, characterized in that the centers of the two front supporting wheels (3-1) and the center of the front supporting wheel belt sleeve form a 60-degree angle supporting structure, and the centers of the two front supporting wheels and the center of the upper front supporting wheel belt sleeve are connected to form an isosceles triangle when seen from the center line of the right cylinder.
  8. 8. A rotary stirring superfine mill according to claim 1 is characterized in that the upper discharge ventilation shell (17) is arranged above the rotary cylinder (24), the lower discharge ventilation shell (23) is arranged below the rotary cylinder (24), and the upper discharge ventilation shell (17) and the lower discharge ventilation shell (23) are concentric with the center of the rotary cylinder (24) and are mutually matched after being connected.
  9. 9. A rotary stirring superfine mill according to claim 1, characterized in that the rotary cylinder (24) is composed of an end face lining plate (11), a cylinder lining plate (12) and a grinding grid plate (16), and the tail end face of the rotary cylinder (24) is sealed by a tail end face sealing plate (21).

Description

Rotary stirring superfine mill Technical Field The invention relates to the field of stirring and crushing, in particular to a rotary stirring superfine mill. Background The ball mill is a grinding equipment with high crushing ratio, and is characterized by that it is a tubular cylinder body with steel balls filled in its interior, and driven by motor driving device to make rotation so as to grind the material by means of the concurrent action of several grinding mechanisms of impact, grinding and extrusion of internal steel balls. In order to improve the grinding efficiency, the rotating speed of a general grinding machine is 70-80% of the critical rotating speed, at the moment, the steel balls are taken to a certain height by the barrel of the grinding machine and then fall down freely, the upper layer of the steel balls is impacted, the lower layer is rolled and ground, and the grinding machine is in a coexistence state of multiple grinding mechanisms. The larger the steel ball, the higher the rotation speed of the mill, the larger the impact force, the weaker the grinding effect, such as the first bin of the multi-bin mill, the lower the steel ball, the lower the rotation speed of the mill, the smaller the impact force, the stronger the grinding effect, such as the tail bin of the multi-bin mill, the lower the filling rate of the ball mill, the larger the proportion of the impact force, the smaller the proportion of the grinding force, the higher the filling rate of the ball mill, the smaller the proportion of the impact force and the larger the proportion of the grinding force. When the filling rate of the grinding medium is high, the free falling height is small, the final impact speed of the grinding medium is low, so that the impact grinding force is reduced, most of the steel balls do effusion motion at the lower layer, and the grinding effect is enhanced. The ball mill is mainly an impact mill, and has high noise and great heating value during operation, which are all manifestations of energy surplus by adopting an impact grinding mechanism. Therefore, the ball mill is cooled by adopting a ventilation mode during working, and the mill with particularly serious heat generation or the material with strong heat sensitivity is cooled by adopting water spraying on the mill barrel. The ball mill has high reliability, strong adaptability to different materials, large size and large treatment capacity, and is a main stream mill in the market, but the ball loading capacity of the ball mill can only reach 25-30%, so the utilization rate of weight and volume is low, and the ball mill is heavy, large in volume, high in equipment investment and high in energy consumption. The stirring mill is characterized in that a fixed cylinder is filled with a plurality of small grinding bodies, and a stirring disc is adopted to enable grinding medium balls to generate centrifugal force and rotating force, so that the grinding medium is rotated, the amount of motion of the stirring mill enables materials in the middle of the grinding medium to be crushed, and the efficient crushing is achieved by the actions of shearing, compressing and rubbing or the composite action of the shearing, compressing and rubbing. In particular, the grinding resulting from the combination of shearing and abrasion is very effective in pulverizing materials into ultra-fine powders. Has high pulverizing ability and high energy utilization rate, and can obtain products with narrow particle size distribution. The key characteristics of the mill are the high energy density, 10-20 times higher than the ball mill, and the very compact design resulting therefrom. The agitator disk on the shaft reached a tip speed of around 5m/s, producing a constant ring of grinding media. In addition, the high energy density in the grinding chamber requires rapid material transport and therefore high suction values are required to pass the product through the mill by air. The grinding medium of the stirring mill is another key factor of the stirring mill, different industries and different fineness, and different materials and grinding media with different diameters are selected. The grinding medium is steel balls, ceramics, glass and other super-hard materials. In conventional grinding equipment, the rolling mill has the lowest energy consumption, the ball mill has the highest energy consumption and the vertical mill has the lowest energy consumption. But the roller press has insufficient fine grinding capability, unreasonable particle size distribution curve, and insufficient smooth particle surface and insufficient round shape. In the aspect of superfine grinding, a ball mill is superior to a roller press and a vertical mill, but the energy consumption is too high. How to ensure the superfine grinding efficiency and lower energy consumption is a problem which needs to be considered. The stirring mill can meet the superfine grinding requirement, the conventional stir