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CN-119869686-B - Grinding rotor and vertical nano sand mill with same

CN119869686BCN 119869686 BCN119869686 BCN 119869686BCN-119869686-B

Abstract

The invention relates to a grinding rotor, which comprises a top wall and a side wall connected with the top wall, wherein a grinding inner cavity is formed in the grinding rotor, a plurality of grinding rod blocks are arranged on the peripheral side of the side wall, the cross section area of each grinding rod block is reduced along the radial direction of the grinding rotor from inside to outside, a first inclined plane is arranged on the facing side of at least part of the grinding rod blocks along the rotating direction of the grinding rotor, an included angle is formed between the first inclined plane and the horizontal plane, a plurality of different-direction reducing channels are arranged on the side wall in a penetrating manner, each different-direction reducing channel is gradually reduced from inside to outside, each different-direction reducing channel comprises a top surface, a first side surface, a bottom surface and a second side surface which are sequentially connected, and the included angle is formed between the top surface and the bottom surface. Through the design of grinding rod piece and different-direction reducing passageway and with separation wheel subassembly cooperation, avoid grinding the intracavity and form the grinding dead zone to grinding efficiency and grinding uniformity degree have effectively been promoted. The invention also relates to a vertical nano sand mill with the grinding rotor.

Inventors

  • ZHANG HONGLIANG
  • SONG KEFU
  • DENG SHIJUN
  • ZHOU CHUANFANG

Assignees

  • 东莞市琅菱机械有限公司
  • 湖北琅菱智能装备有限公司

Dates

Publication Date
20260508
Application Date
20250213

Claims (10)

  1. 1. The grinding rotor is characterized in that the grinding rotor (3) comprises a top wall (34) and a side wall (35) connected with the outer edge of the top wall (34), the side wall (35) is cylindrical, a plurality of grinding inner cavities (31) are formed in the grinding rotor (3), a plurality of grinding rod blocks (32) are arranged on the outer periphery of the side wall (35), the cross section area of each grinding rod block (32) is reduced from inside to outside along the radial direction of the grinding rotor (3), at least part of the grinding rod blocks (32) are provided with a first inclined plane (320) on the facing side along the rotating direction of the grinding rotor (3), the first inclined plane (320) is arranged at an included angle with the horizontal plane, a plurality of different-direction reducing channels (33) are arranged on the side wall (35) in a penetrating mode, each different-direction reducing channel (33) is gradually reduced from inside to outside, each different-direction reducing channel comprises a top surface (331), a first side surface (332), a second side surface (334) and an included angle (333) which is formed between the top surface (331) and the second side surface (333) and the top surface (333) are arranged at an included angle of 0 degrees.
  2. 2. The grinding rotor according to claim 1, wherein the first side surface (332) and the second side surface (334) of the reducing channel (33) are disposed in parallel, and a projection of the first side surface (332) on a horizontal plane is disposed at an angle to a radial direction of the sidewall (35).
  3. 3. A grinding rotor according to claim 1, wherein the grinding rod blocks (32) are uniformly arranged on the outer peripheral side of the side wall (35) in a plurality of rows, each row of the grinding rod blocks (32) is arranged between two adjacent different-direction reducing channels (33), and each row of the grinding rod blocks (32) comprises an upper rod block (321), at least one middle rod block (322) and a lower rod block (323) which are sequentially arranged from top to bottom.
  4. 4. A grinding rotor according to claim 3, wherein each of the grinding rod blocks (32) is provided with the first inclined plane (320) on a facing side in a rotation direction of the grinding rotor (3), and each of the first inclined planes (320) is provided downward.
  5. 5. A grinding rotor according to claim 3, wherein each of the grinding rod blocks (32) is provided with the first inclined planes (320) on the facing side in the rotation direction of the grinding rotor (3), the first inclined planes (320) of each of the upper rod blocks (321) are provided downward, the first inclined planes (320) of each of the lower rod blocks (323) are provided upward, the first inclined planes (320) of the middle rod blocks (322) are provided upward or downward, when the number of the middle rod blocks (322) in each row of the grinding rod blocks (32) is only one, the middle rod blocks (322) provided upward and the middle rod blocks (322) provided downward by the first inclined planes (320) are alternately arranged in the circumferential direction, and when the number of the middle rod blocks (322) in each row of the grinding rod blocks (32) is greater than one, the first inclined planes (320) are also provided upward and alternately arranged in the circumferential direction and alternately arranged in the first inclined planes (322) and the vertical rod blocks (322) are alternately arranged downward.
  6. 6. A grinding rotor according to claim 3, wherein each of the upper bar blocks (321) and each of the lower bar blocks (323) is provided with the first inclined plane (320) on a facing side in a rotation direction of the grinding rotor (3), the first inclined plane (320) of each of the upper bar blocks (321) is provided downward, the first inclined plane (320) of each of the lower bar blocks (323) is provided upward, and each of the middle bar blocks (322) is provided with an arc surface (324) on a facing side in the rotation direction of the grinding rotor (3).
  7. 7. A vertical nano sand mill is characterized by comprising a grinding rotor (3) as claimed in any one of claims 1-6, a frame (10), a grinding cylinder (2), a separating wheel assembly (4), a driving mechanism (5) and a main shaft (6), wherein the driving mechanism (5) and the main shaft (6) are arranged on the frame (10), the driving mechanism (5) is used for driving the main shaft (6) to rotate relative to the frame (10), the grinding rotor (3) is arranged inside the grinding cylinder (2), the separating wheel assembly (4) is arranged in the grinding inner cavity (31), the separating wheel assembly (4) comprises a separating wheel seat (41), the center position of the top of the separating wheel seat (41) is a discharging area (42), a plurality of separating lugs (43) are uniformly arranged on the top of the separating wheel seat (41) around the discharging area (42), a separating channel (44) gradually connected with the discharging area (42) is formed between adjacent separating lugs (43), the separating channel (44) is gradually communicated with the discharging channel (44) and is formed in the main shaft (44), the discharging channel (44) is formed inside the discharging channel (44), the bottom end of the main shaft (6) sequentially passes through the top of the grinding cylinder (2) and the top wall (34) of the grinding rotor (3) and extends to the discharging area (42) of the separating wheel assembly (4), the main shaft discharging channel (61) is communicated with the discharging area (42), and the grinding rotor (3) and the separating wheel assembly (4) synchronously rotate along with the main shaft (6).
  8. 8. The vertical nano-sand mill according to claim 7, wherein the separation convex blocks (43) comprise a first arc surface (431), a second arc surface (432) and a connecting curved surface (433) which are sequentially connected, the first arc surface (431) and the second arc surface (432) respectively extend along the direction from the center position to the edge position of the separation convex block (41), the connecting curved surface (433) is close to the edge position of the separation convex block (41), the second arc surface (432) in one separation convex block (43) and the first arc surface (431) in the next separation convex block (43) form the separation discharging channel (44), the connecting curved surface (433) sequentially comprises a small rounding surface (4331), a third arc surface (4332) and a large rounding surface (4333) along the rotation direction of the separation convex block (41), and the small rounding surface (4331) and the first arc surface (431) are far away from the center position and are far away from the center position of the first arc surface (4331).
  9. 9. The vertical nano-sand mill according to claim 8, wherein the projections of the first arc surface (431), the second arc surface (432) and the third arc surface (4332) on the horizontal plane are respectively a first arc line, a second arc line and a third arc line, and in the same separation convex block (43), a distance (d 1) between a point (C) with the longest distance between the third arc line and a rotation center (X) of the separation wheel seat (41) and an outer end point (A) of the first arc line is larger than a distance (d 2) between the point and an outer end point (B) of the second arc line, and a distance (d 3) between a curvature center (O) of the third arc line and an outer end point (A) of the first arc line is smaller than a distance (d 4) between a curvature center (O) of the third arc line and an outer end point (B) of the second arc line.
  10. 10. The vertical nano-sand mill as set forth in claim 7, wherein a plurality of strip-shaped pushing projections (47) are uniformly disposed on the bottom surface of the separation wheel seat (41) around the center, a second inclined plane (472) is disposed on the facing side of each strip-shaped pushing projection (47) along the rotation direction of the separation wheel seat (41), a vertical plane (471) is disposed on the back side, the vertical planes (471) are perpendicular to the bottom surface of the separation wheel seat (41), an included angle is formed between the vertical planes (471) and the radial direction of the separation wheel seat (41), and an included angle is formed between the second inclined planes (472) and the bottom surface of the separation wheel seat (41).

Description

Grinding rotor and vertical nano sand mill with same Technical Field The invention relates to the field of sanding equipment, in particular to a grinding rotor and a vertical nano sand mill with the grinding rotor. Background The nanometer sand mill is one kind of high efficiency equipment for superfine grinding, especially nanometer level material dispersing and grinding, and has grinding rotor rotating at high speed to energize grinding medium, zirconium ball, etc. and material to produce high frequency collision and friction motion between the grinding medium and the wall of the grinding barrel, and the material grains are ground to nanometer level in the extrusion shearing action of the grinding medium. Such as chinese patent CN215507082U discloses a grinder with a centrifugal separator, which includes a grinding barrel, a grinding cavity is formed in the grinding barrel, a material and a grinding medium are disposed in the grinding cavity, a rotating shaft extending into the grinding cavity is disposed on the rotating shaft, grinding blocks are disposed on the rotating shaft, the centrifugal separator is disposed on the rotating shaft, the centrifugal separator includes an upper flange and a lower flange disposed on the rotating shaft, a plurality of separation fins are disposed between the upper flange and the lower flange, and gaps are disposed between the adjacent separation fins. The centrifugal separator used in the utility model can not be blocked, and has good separation effect. However, the grinding block (i.e., the grinding rotor) in the above-mentioned grinding machine can only impart a velocity component of the grinding media and the grinding material in the circumferential direction of rotation, and the grinding efficiency is low, and the grinding media and the grinding material in the above-mentioned grinding chamber are difficult to form a local circulation, and the grinding media and the grinding material are easily accumulated to form a grinding dead zone, so that the grinding uniformity of the material is poor. Therefore, there is a need to provide a solution to the above-mentioned problems. Disclosure of Invention The invention aims to provide a grinding rotor and a vertical nano sand mill with the same, which can solve the technical problems that in the prior art, the grinding efficiency is low, grinding media and grinding materials are easy to accumulate to form a grinding dead zone, so that the grinding uniformity of the materials is poor. In order to achieve the above purpose, according to one aspect, the invention provides a grinding rotor, which comprises a top wall and a side wall connected with the outer edge of the top wall, wherein the side wall is cylindrical, a grinding inner cavity is formed in the grinding rotor, a plurality of grinding rod blocks are arranged on the outer periphery side of the side wall, the cross section area of each grinding rod block is reduced from inside to outside along the radial direction of the grinding rotor, at least part of the grinding rod blocks are provided with a first inclined plane on the facing side along the rotating direction of the grinding rotor, the first inclined plane is arranged at an included angle with the horizontal plane, a plurality of different-direction reducing channels are arranged on the side wall in a penetrating manner, each different-direction reducing channel is tapered from inside to outside, each different-direction reducing channel comprises a top surface, a first side surface, a bottom surface and a second side surface which are sequentially connected, and the included angle is formed between the top surface and the bottom surface. Further, the first side surface and the second side surface of the reducing channel are arranged in parallel, and an included angle is formed between the projection of the first side surface on the horizontal plane and the radial direction of the side wall. Further, the grinding rod blocks are uniformly arranged on the outer peripheral side of the side wall in multiple rows, each row of the grinding rod blocks is arranged between two adjacent different-direction reducing channels, and each row of the grinding rod blocks comprises an upper rod block, at least one middle rod block and a lower rod block which are sequentially arranged from top to bottom. Further, each of the polishing rod pieces is provided with the first inclined plane on a face side along a rotation direction of the polishing rotor, and each of the first inclined planes is provided downward. Further, each of the polishing rod blocks is provided with the first inclined plane on the facing side along the rotation direction of the polishing rotor, each of the first inclined planes of the upper rod blocks is arranged downward, each of the first inclined planes of the lower rod blocks is arranged upward, the first inclined planes of the middle rod blocks are arranged upward or downward, when only one of the number of the