JP2014213301A - Air current type crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air current type crusher capable of changing a size of a crushing chamber in operation, and maintaining crushing efficiency without reducing in the operation.SOLUTION: The present invention relates to the air current type crusher 100 for discharging a raw material inputted from a supply port 100a after crushing it by using an air current in a crushing chamber 100b. The air current type crusher 100 comprises a casing 30 having the crushing chamber 100b inside, a first rotary blade 10 and a second rotary blade 20 for generating the air current by rotating in the crushing chamber 100b, and the crushing chamber 100b is partitioned by a sidewall surface 33a of a cylindrical surface shape, a first wall surface 31a and a second wall surface 32a mutually opposed in the axis X direction, and the first wall surface 31a and the second wall surface 32a can move in the axis X direction to the sidewall surface 33a, and the first rotary blade 10 and the second rotary blade 20 are mutually opposed in the axis X direction, and are rotatably provided around the axis X.

Description

  The present invention relates to an airflow pulverizer that pulverizes raw materials using an airflow, and more particularly, to an airflow pulverizer that generates airflow by rotating blades and pulverizes the raw materials placed in the airflow by colliding with each other.

  As a conventional technique for pulverizing a raw material, a so-called airflow type pulverization method is known in which pulverization is performed by placing the raw material on an airflow in a pulverization chamber and causing the raw materials to collide with each other. Patent Document 1 discloses a conventional airflow type pulverizer, in which an airflow is generated by the rotation of two rotating blades arranged in a pulverization chamber, and the raw materials on the airflow move in a swivel motion, and each other It is comprised so that it may grind | pulverize by colliding.

  On the other hand, as disclosed in Patent Document 2, an airflow type pulverizer configured to change the size of a pulverization chamber is also known. The airflow type pulverizer 200 shown in FIG. 8 is configured to adjust the size of the pulverization chamber 200b and the interval between the rotary blades 210 and 220 by replacing the fixed casing 233. In the airflow type pulverizer shown in FIG. 8A, a long casing 233a is used as the fixed casing 233, whereby the pulverizing chamber 200b is wide and the interval between the rotary blades 210 and 220 is long. On the other hand, in the airflow type pulverizer shown in FIG. 8B, the short casing 233b is used as the fixed casing 233, whereby the pulverization chamber 200b is narrow and the interval between the rotary blades 210 and 220 is short. Has been. It is necessary to replace the fixed casing 233 after the operation of the airflow crusher 200 is stopped.

  In the airflow type pulverizer shown in FIG. 8, if the size of the pulverization chamber 200b is changed during operation, the pulverization chamber 200b is connected to the outside and the raw material leaks to the outside. Further, in the airflow type pulverizer disclosed in Patent Document 2, if the size of the pulverization chamber is changed during operation, a groove extending in the circumferential direction is formed in the pulverization chamber, and the airflow in the pulverization chamber is disturbed. Will be invited. That is, the conventional airflow crusher cannot change the size of the crushing chamber or the interval between the rotating blades during operation.

  After the introduction of the raw material into the grinding chamber during the operation of the airflow crusher, the pulverized material that circulates and swirls in the grinding chamber gradually decreases. In some cases, a large amount of unpulverized material may remain in the pulverization chamber after the operation has ended. For this reason, if the crushing chamber can be reduced during operation after the raw materials have been charged, the frequency of collision between the raw materials can be maintained. Therefore, it is possible to reduce the remaining amount of the unpulverized material after the operation is finished without reducing the pulverization efficiency. However, the airflow pulverizer disclosed in Patent Document 2 has a problem that the pulverization efficiency cannot be maintained because the pulverization chamber cannot be reduced during operation.

Japanese Patent Laid-Open No. 4-29757 JP 2003-10712 A

  Therefore, the problem to be solved by the present invention is to provide an airflow type pulverizer capable of changing the size of the pulverization chamber during operation and maintaining the pulverization efficiency without decreasing during operation. is there.

  The present invention has been made in order to solve the above-mentioned problems, and the invention according to claim 1 is that the raw material input from the supply port is pulverized using an air flow in the pulverization chamber and then discharged to the discharge port. An airflow type pulverizer comprising: a casing having the pulverization chamber therein; and a first rotary blade and a second rotary blade that are provided in the pulverization chamber and generate an airflow in the pulverization chamber by rotating. The crushing chamber is partitioned by a cylindrical side wall surface and a first wall surface and a second wall surface facing each other in the axial direction of the cylindrical surface, and the first rotating blade and the second rotating blade Are opposed to each other in the axial direction, and are rotatably provided around the axis. The first rotary blade and the first wall surface are disposed on the supply port side, and the second rotary blade and The second wall surface is The first wall surface and the second wall surface are disposed on the outlet side, and the casing includes a movable member movable in the axial direction with respect to the side wall surface, with an outer periphery closely contacting the side wall surface. At least any one of these is provided in the said movable member, It is an airflow type grinder characterized by the above-mentioned.

  According to the first aspect of the present invention, it is possible to change the size of the pulverization chamber during operation, and prevent a decrease in pulverization efficiency due to a decrease in the raw material in the pulverization chamber, and high pulverization efficiency is maintained. An airflow crusher can be provided.

  The invention according to claim 2 is an airflow type pulverizer according to claim 1, wherein a distance in the axial direction between the first rotary blade and the second rotary blade is variable. is there.

  According to the second aspect of the present invention, the size of the pulverization chamber can be changed during operation, and the state of the airflow generated in the pulverization chamber during operation can be changed. Is to provide a machine.

  The invention according to claim 3 is a disk in which at least one of the first rotating blade and the second rotating blade is arranged perpendicular to the axial direction and has a through hole, and an outer diameter of the disk The airflow type pulverizer according to claim 1, further comprising a plurality of blades extending radially from the disk toward a tip disposed on a larger diameter circumference.

  According to the third aspect of the present invention, it is possible to provide an airflow type pulverizer that generates a small amount of heat during pulverization and has little influence on the quality of the pulverized product.

  According to a fourth aspect of the present invention, the plurality of blades are a plurality of long blades extending from the center of the disk to the tip, and a base end disposed on a circumference smaller in diameter than the outer diameter of the disk The airflow type pulverizer according to claim 3, wherein the long blade and the short blade are alternately arranged in a circumferential direction.

  According to the fourth aspect of the invention, the long blade and the short blade generate an air flow in the pulverization chamber, the long blade guides the gas flowing out of the through hole to the outer periphery, and the short blade rectifies the outer air flow. By doing so, an airflow type pulverizer with high pulverization efficiency can be provided.

  The invention according to claim 5 further includes an annular dam plate disposed closer to the discharge port than the second rotary blade, and the dam plate is concentric with the shaft while facing the second rotary blade. It is arrange | positioned, It is an airflow-type grinder in any one of Claims 1-4 characterized by the above-mentioned.

  According to the invention described in claim 5, the airflow type pulverizer in which the pulverized material having a coarse particle size is prevented from being discharged from the vicinity of the center portion of the second rotary blade, thereby reducing the variation in the particle size of the pulverized material. Can be provided.

  The invention according to claim 6 further includes a crushing blade that crushes the charged raw material and supplies it to the crushing chamber on the supply port side from the first rotary blade, and the crushing blade is the first crushing blade. The airflow type pulverizer according to any one of claims 1 to 5, wherein the airflow type pulverizer rotates around the axis in synchronization with one rotary blade.

  According to the sixth aspect of the present invention, an airflow type pulverizer having high pulverization efficiency can be provided by preliminarily crushing the raw material and then supplying it to the pulverization chamber.

  The invention according to claim 7 further comprises a blowing means for generating an airflow flowing from the supply port to the discharge port via the pulverization chamber. It is an airflow type pulverizer described.

  According to the seventh aspect of the present invention, it is possible to provide an airflow type pulverizer capable of changing the state of the airflow in the pulverization chamber by controlling the air blowing means.

  ADVANTAGE OF THE INVENTION According to this invention, the magnitude | size of a grinding | pulverization chamber can be changed during a driving | operation, and the airflow type grinder maintained without a grinding | pulverization efficiency falling during a driving | operation can be provided.

It is front sectional drawing which shows the airflow type grinder which concerns on embodiment of this invention. It is a figure which shows the 1st rotary blade of the airflow type crusher which concerns on embodiment of this invention, (a) is a left view, (b) is AA sectional drawing, (c) is a right view. It is a figure which shows the 2nd rotary blade of the airflow type crusher which concerns on embodiment of this invention, (a) is a left view, (b) is BB sectional drawing, (c) is a right view. It is a figure which shows the crushing blade and crushing liner of the airflow type crusher which concerns on embodiment of this invention, (a) is a front view which shows a crushing blade and a crushing liner, (b) is the right side of a crushing blade. A surface figure and (c) are perspective views of a crushing blade. It is a figure which shows the airflow type crusher which concerns on embodiment of this invention, and is front sectional drawing which shows the state which spaced apart between the 1st wall surface and the 2nd wall surface from the state shown in FIG. It is a schematic diagram which shows the state of the airflow which generate | occur | produces in the crushing chamber of the airflow type crusher which concerns on embodiment of this invention. It is front sectional drawing which shows the state which provided the dam plate in the airflow type crusher which concerns on embodiment of this invention. It is a figure which shows the conventional airflow type crusher, (a) is a schematic diagram which shows the state which the crushing chamber expanded, (b) is a schematic diagram which shows the state which the crushing chamber reduced.

  Next, embodiments of the present invention will be described with reference to the drawings. The embodiments described below are preferred embodiments of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention is particularly limited in the following description. As long as there is no description of the effect, it is not restricted to these aspects.

(Embodiment)
An embodiment of an airflow type pulverizer according to the present invention will be described with reference to FIGS. FIG. 1 is a front cross-sectional view showing an airflow type pulverizer according to an embodiment of the present invention. Drawing 2 is a figure showing the 1st rotary blade of an airflow type crusher concerning an embodiment of the present invention, (a) is a front view, (b) is a right side view, and (c) is a rear view. Drawing 3 is a figure showing the rough crushing blade of the air current crusher concerning the embodiment of the present invention, (a) is a front view, (b) is a right side view, and (c) is a perspective view. FIG. 4 is a view showing the airflow type pulverizer according to the embodiment of the present invention, and is a front sectional view showing a state where the first wall surface and the second wall surface are separated from the state shown in FIG. 1.

  First, the overall configuration of the airflow crusher 100 according to the present embodiment will be described with reference to FIG. The airflow type pulverizer 100 according to the present embodiment includes a supply port 100a into which raw materials are input, a pulverization chamber 100b in which the raw materials are pulverized, and a discharge port 100c through which pulverized material is discharged. The airflow crusher 100 includes a casing 30, a first rotary blade 10, and a second rotary blade 20 as main components. A crushing chamber 100b is provided inside the casing 30, and the first rotary blade 10 and the second rotary blade 20 are provided in the crushing chamber 100b.

  The casing 30 includes a fixed casing 33, a first movable casing 31, and a second movable casing 32. The fixed casing 33 has a cylindrical side wall surface 33a therein. The first movable casing 31 and the second movable casing 32 are configured to be movable in the direction of the axis X of the side wall surface 33a having a cylindrical surface shape. The first movable casing 31 is provided with a substantially circular first wall surface 31a and a cylindrical contact surface 31b on the outer periphery thereof. The first movable casing 31 moves in the left-right direction in FIG. 1 while bringing the close contact surface 31b into close contact with the side wall surface 33a. The close contact surface 31b is provided with an O-ring 31c so that no gap is generated between the side wall surface 33a and the close contact surface 31b. The second movable casing 32 is also provided with a substantially circular second wall surface 32a and a cylindrical contact surface 32b on the outer periphery thereof. The second movable casing 32 moves in the left-right direction in FIG. 1 while bringing the contact surface 32b into close contact with the side wall surface 33a. The close contact surface 32b is provided with an O-ring 32c so that no gap is formed between the side wall surface 33a and the close contact surface 32b.

  The first wall surface 31a and the second wall surface 32a oppose each other in the axis X direction. The crushing chamber 100b is partitioned by a side wall surface 33a, a first wall surface 31a, and a second wall surface 32a. The crushing chamber 100 b is connected to the supply port 100 a and the discharge port 100 c through the through hole 31 d of the first movable casing 31 and the through hole 32 d of the second movable casing 32.

  The first rotary blade 10 and the second rotary blade 20 are configured to face each other in the axis X direction and to be independently rotatable around the axis X. The first rotary blade 10 is coupled to a first drive shaft 40 extending in the axis X direction, and the first drive shaft 40 is rotationally driven by a drive means (not shown). The first drive shaft 40 reaches the crushing chamber 100b through the through hole 31d provided in the first movable casing 31, and rotates the first rotary blade 10 in the crushing chamber 100b. The second rotary blade 20 is coupled to a second drive shaft 50 extending in the direction of the axis X, and the second drive shaft 50 is also rotationally driven by drive means (not shown). The second drive shaft 50 reaches the crushing chamber 100b through the through hole 32d provided in the second movable casing 32, and rotates the second rotary blade 20 in the crushing chamber 100b.

  The first drive shaft 40 is supported by a shaft case 41. That is, the shaft case 41 supports the first drive shaft 40 through the bearing 42 and the oil seal 43 so as to be rotatable around the axis X. The second drive shaft 50 is supported by the shaft case 51. That is, the shaft case 51 supports the second drive shaft 50 so as to be rotatable around the axis X via the bearing 52 and the oil seal 53.

  A crushing blade 60 is provided adjacent to the first rotating blade 10 on the supply port 100 a side from the first rotating blade 10. The crushing blade 60 is also coupled to the first drive shaft 40 in the same manner as the first rotary blade 10, and is thereby provided to be rotatable around the axis X in synchronization with the first rotary blade 10. Further, a crushing liner 63 that faces the crushing blade 60 in the radial direction is provided in the through hole 31 d of the first movable casing 31. The rough crushing blade 60 is provided at substantially the same position as the supply port 100a in the direction of the axis X, and the crushing blade 60 is disposed almost directly below the supply port 100a. Therefore, the raw material supplied from the supply port 100 a is first transferred to the gap between the roughing blade 60 and the roughing liner 63.

  A discharge blade 80 is provided adjacent to the second rotary blade 20 on the discharge port 100 c side from the second rotary blade 20. The discharge blade 80 is provided as a blowing unit that generates an airflow that flows from the supply port 100a to the discharge port 100c via the grinding chamber 100b. Similarly to the second rotary blade 20, the discharge blade 80 is also coupled to the second drive shaft 50, and is thus provided to be rotatable around the axis X in synchronization with the second rotary blade 20. As the discharge blade 80 rotates, an air flow toward the discharge port 100c is generated. The illustrated discharge blade 80 is provided at substantially the same position as the discharge port 100c in the axis X direction, and the discharge blade 80 is disposed almost directly above the discharge port 100c. The shape and position of the discharge blade 80 can be set as appropriate according to the required air blowing capability. Of course, it is also possible to constitute the airflow crusher 100 without providing the discharge blades 80.

  Next, the first rotary blade 10 will be described with reference to FIG. The first rotary blade 10 has a disk 11 and a plurality of long blades 13 and a plurality of short blades 14 coupled to the disk 11. A central portion of the disk 11 is provided with a boss 15 and a coupling hole 16 for coupling to the first drive shaft 40, and a plurality of through holes 12 penetrating in the axis X direction are provided around the boss 15. Yes. The distal ends 13 a and 14 a of the long blade 13 and the short blade 14 are arranged on a circumference larger than the outer diameter of the disc 11. The long blade 13 extends from the center of the disk 11 to the tip 13a and is connected to the boss 15 at the center. The long blade 13 is adjacent to the through hole 12 at the center of the disk 11. The short blade 14 extends from the base end 14 b to the tip end 14 a, and the base end 14 b is disposed on the circumference having a smaller diameter than the outer diameter of the disk 11. Therefore, the short blade 14 is formed shorter in the radial direction than the long blade 13. Both the long blade 13 and the short blade 14 protrude radially outward from the outer periphery 11a of the disk 11 (see FIG. 2A), and protrude in the axial direction from the disk 11 (FIG. 2B). )reference).

  Next, an operation when the first rotary blade 10 rotates will be described. When the first rotary blade 10 rotates counterclockwise in FIG. 2A, an airflow that flows from the center toward the outer periphery is generated. That is, gas flows out from the through hole 12 at the center of the first rotary blade 10 toward the front side in FIG. 2A, and the gas flows toward the outer periphery. Since the long blade 13 is continuous from the center of the disk 11 to the tip 13a, it plays the role of carrying the gas flowing out of the through hole 12 to the outer periphery. On the other hand, the short blade 14 is disposed between the long blades 13 and prevents the turbulent flow from occurring on the outer periphery, thereby rectifying the air flow. By rectifying the airflow in the crushing chamber 100b, the raw materials riding on the airflow collide with each other and are efficiently crushed. Since the first rotary blade 10 has few opportunities for direct contact with the raw material, heat generation is small, and the pulverized product does not become excessively hot.

  Next, the second rotary blade 20 will be described with reference to FIG. The second rotary blade 20 has a plurality of solid blades 21 extending radially from the center. A coupling hole 22 for coupling to the second drive shaft 50 is provided at the center of the second rotary blade 20. When the second rotary blade 20 rotates clockwise in FIG. 3A, an airflow that flows from the center toward the outer periphery is generated. The 2nd rotary blade 20 accelerates | stimulates the collision of the raw materials which carried on the airflow by generating a circulating flow within the crushing chamber 100b. The second rotary blade 20 enables the raw material to be finely pulverized by directly colliding the raw material and the solid blade 21.

  Next, the rough crushing blade 60 will be described with reference to FIG. The crushing blade 60 has a plurality of blades 61 extending in a spiral shape. A coupling hole 62 coupled to the first drive shaft 40 is provided at the center of the crushing blade 60. As described above, the raw material supplied from the supply port 100 a is first transferred to the gap between the roughing blade 60 and the roughing liner 63. When the crushing blade 60 rotates, a large shearing force is applied to the raw material in the gap between the crushing blade 60 and the crushing liner 63 and the material is roughly crushed. The roughly crushed raw material moves to the crushing chamber 100b.

  Next, a change in the size of the crushing chamber 100b of the airflow crusher 100 according to the present embodiment will be described with reference to FIG. The 1st movable casing 31 and the 2nd movable casing 32 are comprised so that a movement in the left-right direction in FIG. 5 is possible via the roller etc. which are not shown in figure. In the state shown in FIG. 5, the crushing chamber 100 b is expanded as compared with the state shown in FIG. 1, and the distance between the first rotary blade 10 and the second rotary blade 20 is increased.

  As the pulverization of the raw material proceeds by the operation of the airflow pulverizer 100 and the pulverized material circulating and swirling in the pulverization chamber 100b decreases, the pulverization efficiency decreases. Therefore, by reducing the pulverization chamber 100b as the raw material in the pulverization chamber 100b decreases, it becomes possible to prevent a decrease in the pulverization efficiency.

  In addition, although the airflow type crusher 100 which concerns on this embodiment is comprised so that both the 1st movable casing 31 and the 2nd movable casing 32 can move with respect to the fixed casing 33, any one of these is comprised. Can be moved, the size of the crushing chamber 100b can be changed.

  Next, the state of the airflow generated in the pulverization chamber 100b of the airflow type pulverizer 100 according to the present embodiment, the same-body collision that causes the pulverization, and the collision between the raw material and the rotary blade are shown in FIG. explain.

  Since the first rotary blade 10 shown in FIG. 2 is rotating on the left side in FIG. 6 in the crushing chamber 100b, the first rotary blade 10 reaches the outer periphery through the central through hole 12 and passes through the through hole 12 again. A large circulation flow is generated. Since the first rotating blade 10 is provided with the disk 11 that prevents the gas from going back and forth in the axial direction, it does not become a small circulating flow. The presence of the short blade 14 prevents the airflow from becoming turbulent in the vicinity of the outer periphery and rectifies the airflow. Therefore, the frequency of the same-body collision between the raw materials increases, and it becomes possible to pulverize efficiently.

  Since the second rotary blade 20 shown in FIG. 3 is rotating on the right side in FIG. 6 in the grinding chamber 100b, a circulating flow as shown on the right side in FIG. 6 is generated. Since the second rotating blade 20 is not provided with the disk 11 that hinders the axial movement of the gas, unlike the first rotating blade 10, a plurality of circulating flows are generated as shown in FIG. The raw material in the air current causes a collision with the same body and is crushed. Moreover, the 2nd rotary blade 20 has a high ratio by which a raw material and the solid blade 21 collide directly, and a raw material is pulverized.

  As described above, the first movable casing 31 and the second movable casing 32 are configured to be movable in the left-right direction in FIG. The first rotary blade 10 and the second rotary blade 20 move following the first movable casing 31 and the second movable casing 32, respectively. By changing the distance between the first rotary blade 10 and the second rotary blade 20, the state of the airflow in the crushing chamber 100b can be changed, and the frequency at which the same-body collision occurs can be adjusted. Become.

  In the present embodiment, the first rotary blade 10 and the second rotary blade 20 have different configurations, but both of them may have the same configuration as the first rotary blade 10. Of course, both of them may have the same configuration as the second rotary blade 20.

  FIG. 7 shows a state in which the airflow pulverizer 100 according to the present embodiment is provided with a weir plate 70 that prevents the raw material being pulverized from being discharged from the pulverization chamber 100b. Specifically, an inner diameter side dam plate 71 and an outer diameter side dam plate 72 are provided adjacent to the crushing chamber 100b. The inner diameter side weir plate 71 is formed in an annular shape and is attached to the second rotary blade 20. The inner diameter side weir plate 71 mainly prevents the pulverized material having a large particle size from being discharged from the central portion of the pulverization chamber 100b. The outer diameter side dam plate 72 is also formed in an annular shape and is attached to the second movable casing 32. The outer diameter side weir plate 72 mainly prevents the pulverized material in the middle of pulverization from being discharged on the circulating flow. The inner diameter side dam plate 71 and the outer diameter side dam plate 72 are provided concentrically with the axis X. Thus, by providing the weir plate 70 in the airflow crusher 100, it is possible to reduce the variation in the particle size of the discharged pulverized product.

  In the present embodiment, the discharge blade 80 accommodated in the casing 30 is employed as a blowing unit that generates an airflow that flows from the supply port 100a to the discharge port 100c via the grinding chamber 100b. Of course, this air blowing means can be provided outside the casing 30. For example, an air blowing fan, a blower or the like can be provided outside the casing 30 to generate an air flow.

DESCRIPTION OF SYMBOLS 100 Airflow type pulverizer 100a Supply port 100b Crushing chamber 100c Discharge port 10 1st rotary blade 11 Disc 12 Through-hole 13 Long blade 14 Short blade 20 Second rotary blade 30 Casing 31 1st movable casing 31a 1st wall surface 32 2nd Movable casing 32a Second wall surface 33 Fixed casing 33a Side wall surface 60 Crushing blade 70 Dam plate 80 Discharge blade

Claims (7)

An airflow type pulverizer that pulverizes a raw material charged from a supply port using an airflow in a pulverization chamber and then discharges the raw material to a discharge port,
A casing having the crushing chamber therein;
A first rotating blade and a second rotating blade that are provided in the pulverizing chamber and generate an air flow in the pulverizing chamber by rotating;
The grinding chamber is partitioned by a cylindrical side wall surface and a first wall surface and a second wall surface facing each other in the axial direction of the cylindrical surface,
The first rotary vane and the second rotary vane face each other in the axial direction, and are provided rotatably around the axis,
The first rotary blade and the first wall surface are arranged on the supply port side, the second rotary blade and the second wall surface are arranged on the discharge port side,
The casing has a movable member that is movable in the axial direction with respect to the side wall surface while keeping an outer periphery in close contact with the side wall surface.
At least one of the first wall surface and the second wall surface is provided on the movable member. The airflow type pulverizer according to claim 1, wherein a distance in the axial direction between the first rotary blade and the second rotary blade is variable. At least one of the first rotary blade and the second rotary blade is
A disk arranged perpendicular to the axial direction and having a through hole;
The airflow type according to claim 1, further comprising a plurality of blades extending radially from the disk toward a tip disposed on a circumference having a diameter larger than an outer diameter of the disk. Crusher. The plurality of blades are
A plurality of long blades extending from the center of the disc to the tip;
A plurality of short blades extending from the proximal end to the distal end disposed on the circumference having a smaller diameter than the outer diameter of the disc,
The airflow pulverizer according to claim 3, wherein the long blades and the short blades are alternately arranged in a circumferential direction. An annular weir plate disposed on the outlet side from the second rotary blade;
The airflow pulverizer according to any one of claims 1 to 4, wherein the barrier plate is disposed concentrically with the shaft while facing the second rotary blade. A rough crushing blade is further provided on the supply port side from the first rotary vane to crush the charged raw material and supply it to the crushing chamber,
The air-flow type pulverizer according to any one of claims 1 to 5, wherein the crushing blade rotates around the axis in synchronization with the first rotary blade. The airflow type pulverizer according to any one of claims 1 to 6, further comprising a blowing unit that generates an airflow that flows from the supply port to the discharge port via the pulverization chamber.

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