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CN-224208161-U - Impeller is smashed to fan coal pulverizer

CN224208161UCN 224208161 UCN224208161 UCN 224208161UCN-224208161-U

Abstract

The utility model discloses a crushing impeller of a fan coal mill, and relates to the technical field of impellers of fan coal mills, comprising an impeller body, wherein a bearing disc is arranged above the impeller body, a plurality of groups of saw-tooth cutters are fixedly arranged at the top of the bearing disc in an annular array shape, and a base barrel connected with the impeller body is arranged inside the saw-tooth cutters; the curved surface outer wall of impeller body is annular array form and has seted up multiunit L breach, multiunit impeller body edge is located the top interval of impeller body and is equipped with main blade. The utility model bears the force of falling coal blocks through the bearing disc and plays a primary breaking purpose, the bottom auxiliary vanes and the main vanes can promote the coal blocks to move radially back and forth, the breaking path of the coal blocks is promoted to be longer, and meanwhile, the main vanes and the auxiliary vanes rotating at high speed are utilized to complete the purpose of fully breaking the coal blocks, so that the coal blocks can be conveniently and efficiently milled at the lower part, and the working efficiency of the pulverizer is improved in a phase-changing manner.

Inventors

  • LI PING
  • LI JUNLIN

Assignees

  • 辽宁冶矿重型机械有限公司

Dates

Publication Date
20260508
Application Date
20250529

Claims (7)

  1. 1. A pulverizing impeller of a fan coal mill comprises an impeller body (100), and is characterized in that a bearing disc (130) is arranged above the impeller body (100), a plurality of groups of saw-tooth cutters (140) are fixed on the top of the bearing disc (130) in an annular array shape, and a base barrel (150) connected with the impeller body (100) is arranged inside the saw-tooth cutters (140); The outer wall of the curved surface of the impeller body (100) is provided with a plurality of groups of L notches (110) in a ring-shaped array shape, a plurality of groups of the impeller body (100) are provided with main blades (120) at intervals at the top of the impeller body (100), a plurality of groups of auxiliary blades (170) fixed at the top of the impeller body (100) are arranged at the bottom of the bearing disc (130), and three groups of conical head plates (171) are fixed outside each group of the auxiliary blades (170).
  2. 2. The pulverizer impeller of the fan coal pulverizer of claim 1, wherein the impeller body (100) is provided with a blanking hole (101) at the top center, and the bottom fine blanking hole (101) of the base cylinder (150) extends to the lower side of the impeller body (100).
  3. 3. A pulverizer impeller for a fan mill according to claim 2, wherein a plurality of groups of inclined positioning rods (160) are fixed to the outer wall of the base cylinder (150), and the distal ends of each group of positioning rods (160) are fixed to the bottom of the impeller body (100).
  4. 4. The pulverizer impeller of claim 1, wherein the curved inner wall of the base cylinder (150) is provided with two sets of keyways (151) extending to the upper and lower ends of the base cylinder (150).
  5. 5. The pulverizer impeller of claim 1, wherein the plurality of sets of auxiliary blades (170) are distributed on the top of the impeller body (100) in an annular array, each set of auxiliary blades (170) is disposed in an inclined manner, and the inclination angle of each auxiliary blade (170) is opposite to that of the main blade (120).
  6. 6. The pulverizer impeller of claim 1, wherein the top of the serrated knife (140) is provided with a tooth slot with a small middle edge.
  7. 7. The pulverizer impeller for the fan coal mill as set forth in claim 1, wherein bolts (102) are mounted at positions corresponding to each group of main blades (120) at the bottom of the impeller body (100), the bolts (102) extend into the main blades (120) through the impeller body (100), and threaded holes matched with the bolts (102) are formed in the bottoms of the main blades (120).

Description

Impeller is smashed to fan coal pulverizer Technical Field The utility model relates to the technical field of fan coal mill impellers, in particular to a fan coal mill crushing impeller. Background The fan impeller is a wind wheel which axially intakes air, radially outputs air and uses centrifugal force to do work so as to enable air to increase pressure. Similarly, a pulverizer with a similar structure can be designed by utilizing the working principle to pulverize various materials. The patent document with the publication number CN 220657803U of the Chinese patent net is searched to disclose a fan coal mill crushing blade, the fan coal mill crushing blade is connected with a screw thread through a fastening bolt and a fastening nut, the blade can be installed on an installation piece on an impeller body, and the fastening nut in threaded connection with the fastening bolt is rotated simultaneously, so that the fastening bolt is separated from the impeller body, the convenience of the staff for disassembling and assembling the blade can be improved, and the blade and the impeller body are installed in a split type, so that when the blade is worn, the blade is not required to be integrally replaced, only a single blade is required to be replaced, and the waste can be avoided. The patent document with the publication number CN 212018114U of the Chinese patent network discloses a coal mill capable of prolonging the service life of a striking wheel, which enhances the wear resistance of the surface of the striking wheel by welding a manganese steel plate on the surface of the striking wheel, so that the striking wheel is not easy to wear, thereby reducing the maintenance times, reducing the maintenance workload, prolonging the running time of equipment, improving the working efficiency, keeping the equipment in normal running and reducing the use limitation According to the two comparison technologies, the force generated by scattering the falling coal blocks by the blades on the impeller body is single, even the coal blocks can stay on the impeller body and can block the subsequently falling coal blocks, so that the working efficiency of grinding the coal blocks is reduced, and therefore, the fan coal mill grinding impeller is provided. Disclosure of utility model Based on the above, the utility model aims to provide a pulverizing impeller of a fan coal mill, so as to solve the technical problems set forth in the background. The utility model provides a crushing impeller of a fan coal mill, which comprises an impeller body, wherein a bearing disc is arranged above the impeller body, a plurality of groups of saw-tooth cutters are fixedly arranged at the top of the bearing disc in an annular array shape, and a base barrel connected with the impeller body is arranged inside the saw-tooth cutters; The outer wall of the curved surface of the impeller body is provided with a plurality of groups of L notches in an annular array shape, a plurality of groups of L notches are arranged on the edge of the impeller body at intervals at the top of the impeller body, a plurality of groups of auxiliary blades fixed at the top of the impeller body are arranged at the bottom of the bearing disc, and three groups of conical head plates are fixed outside each group of auxiliary blades. As the preferable technical scheme, the top center position of the impeller body is provided with a blanking hole, and the bottom fine blanking hole of the base cylinder extends to the lower side of the impeller body. As the preferable technical scheme, the outer wall of the base cylinder is fixed with a plurality of groups of inclined positioning rods, and the tail end of each group of positioning rods is fixed at the bottom of the impeller body. As a preferable technical scheme, two groups of key grooves extending to the upper end and the lower end of the base cylinder are formed in the inner wall of the curved surface of the base cylinder. As the preferable technical scheme, a plurality of groups of auxiliary blades are distributed at the top of the impeller body in an annular array shape, each group of auxiliary blades are arranged in an inclined mode, and the inclined angle of each auxiliary blade is opposite to that of the main blade. As the preferable technical scheme, the top of the serrated knife is provided with a state that a tooth slot is small in the middle and large in the edge. As the preferable technical scheme, bolts are assembled at the positions, corresponding to each group of main blades, of the bottom of the impeller body, the bolts penetrate through the impeller body and extend into the main blades, and threaded holes matched with the bolts are formed in the bottom of the main blades. In summary, the utility model has the following advantages: The utility model bears the force of falling coal blocks through the bearing disc and plays a primary breaking purpose, the bottom auxiliary vanes and the main vanes can promote the