CN-224208568-U - Grading wheel capable of preventing materials from caking

CN224208568UCN 224208568 UCN224208568 UCN 224208568UCN-224208568-U

Abstract

The utility model discloses a classifying wheel for preventing materials from caking, which comprises an annular upper plate, a round lower plate, a main framework concentrically arranged with the upper plate and the lower plate, a transmission shaft sleeved in the main framework, N blades for connecting the annular upper plate and the round lower plate, and a blade support tube connected with the blades and the main framework, wherein the main framework is provided with N branches, the transmission shaft is provided with a main gas channel and a plurality of branch gas channels, the branch gas channels are communicated with the M branches, the blade support tube comprises a hollow support tube and a solid support tube, M through holes are arranged on the blades, and M is more than or equal to N, through the through-hole that sets up on hollow stay tube intercommunication branch gas circuit and the blade for external air supply can sweep the material granule that hovers for a long time around the classifying wheel blade, avoids hovering the quick friction between granule and the classifying wheel blade, and then effectively avoids classifying wheel blade and hovering material granule long-time friction heat generation, thereby make the lower material of fusing point get into melting or melting state and take place the caking when classifying or smashing, and then the adhesion is on classifying wheel blade.

Inventors

WANG YUN
ZHANG MEI
XING HAO
ZHANG CHAOGUANG
LI MENG

Assignees

江苏天问新材料科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250413

Claims (10)

1. A classifying wheel for preventing caking of a material, comprising: A main skeleton comprising N branches; The transmission shaft is sleeved in the main framework and comprises a main gas path and branch gas paths, the main gas path is arranged in a single opening, and the branch gas paths are communicated with M branch gas paths; The circle center of the annular upper plate is arranged concentrically with the circle center of the main framework; The circle center of the circular lower plate is arranged concentrically with the circle center of the main framework; N blades are arranged between the annular upper plate and the circular lower plate, and two ends of each of the n blades are fixedly connected with the annular upper plate and the circular lower plate respectively; The blade support tube comprises a hollow support tube and a solid support tube, and the blade support tube is respectively connected with the blade and the main framework, wherein the branch air passage penetrates through the hollow support tube; wherein m blades are provided with through holes, and m is more than or equal to n。
2. The classifying wheel for preventing materials from caking according to claim 1, wherein the relation between the number N of the main skeleton branches and the height H of the blades is N=H/10×4, N is a natural number, and the height unit of H is cm.
3. A classifying wheel for preventing agglomeration of materials according to claim 1, wherein m said blades are provided with said through holes, wherein n≤m≤3n。
4. A classifying wheel for preventing caking of materials according to claim 1 wherein N≤M<N。
5. A classifying wheel for preventing agglomeration of materials according to claim 1, wherein the hollow support tube and the solid support tube are disposed to intersect in a vertical direction.
6. A classifying wheel for preventing caking of materials according to claim 1 or 5 wherein said hollow support tube and said solid support tube are disposed alternately on the same horizontal plane around said main frame.
7. A classifying wheel for preventing agglomeration of materials according to claim 1, wherein an included angle θ is formed between each of the blades and the supporting tube, and θ is 0 ° or more and 75 ° or less.
8. A classifying wheel for preventing caking of materials according to claim 1 wherein the annular upper plate comprises a connecting member connecting the annular upper plate and the main frame.
9. The grading wheel for preventing materials from caking according to claim 1, wherein a first key groove is formed in the inner side of the main framework, a second key groove is formed in the outer side of the transmission shaft, and tangential keys are arranged in the first key groove and the second key groove.
10. A classifying wheel for preventing materials from caking according to claim 1, wherein the end of the transmission shaft close to the circular lower plate is provided with external threads for preventing the transmission shaft from slipping.

Description

Grading wheel capable of preventing materials from caking Technical Field The utility model relates to the field of material crushing, in particular to a classifying wheel for preventing materials from caking. Background The classifying wheel is used as a common tool for classifying materials and is widely applied to the fields of high polymer material crushing and classifying. In normal operation of a common classifying wheel, the condition that low-weight and small-particle-size materials outside the classifying wheel hover all the time always exists, and in this time, the classifying wheel blades and hovering material particles generate heat through long-time friction, if the melting point of the materials is low, the hovering material particles enter a molten or molten state and then are agglomerated and adhered to the classifying wheel blades, so that on one hand, the weight of the classifying wheel is increased, the energy consumption of a classifying motor is improved, the classifying capacity is reduced, and on the other hand, when the classifying wheel is tangential, potential material pollution is possibly caused because the adhering part is not thoroughly cleaned. Accordingly, there is a need for a classification wheel that can improve or avoid excessive hovering of material particles outside the classification wheel. Disclosure of Invention The stress analysis is carried out on the material particles outside the classifying wheel, so that the stress condition of the material particles is generally shown as follows, the vertical upward buoyancy action provided by a fan applied to the ① material particles is greater than or equal to the vertical downward gravity action, the horizontal inward centripetal force provided by the fan is greater than the horizontal outward centrifugal force of classifying wheel blades on the material, the vertical upward buoyancy action provided by a stroke fan applied to the ② material particles is greater than or equal to the vertical downward gravity action, and the horizontal inward centripetal force provided by the fan is less than or equal to the horizontal outward centrifugal force of classifying wheel blades on the material. In the ① th case, the material particles are sucked into the inside of the classifying wheel to realize the thickness classification effect of the solid particles, while in the ② th case, the material particles cannot get rid of the centrifugal force exerted by the blades of the classifying wheel, so that the material particles can form a long-time hovering effect outside the classifying wheel. The utility model discloses a classifying wheel for preventing materials from caking, which is characterized in that an air passage is arranged on a transmission shaft of the classifying wheel, through holes are arranged on blades, and the air passage is communicated with a hollow supporting tube through a main framework branch, so that material particles hovering around the classifying wheel blades for a long time can be purged by an external air source, the rapid friction between hovering particles and the classifying wheel blades is avoided, further, the long-time friction heat generation between the classifying wheel blades and hovering material particles is effectively avoided, and materials with low melting points enter a melting state or a melting state during classification or crushing so as to agglomerate and adhere to the classifying wheel blades. A classifying wheel for preventing caking of a material, comprising: A main skeleton comprising N branches; The transmission shaft is sleeved in the main framework and comprises a main gas path and branch gas paths, the main gas path is arranged in a single opening, and the branch gas paths are communicated with M branch gas paths; The circle center of the annular upper plate is arranged concentrically with the circle center of the main framework; The circle center of the circular lower plate is arranged concentrically with the circle center of the main framework; The n blades are fixedly connected with the annular upper plate and the circular lower plate respectively; The blade support tube comprises a hollow support tube and a solid support tube, and the blade support tube is respectively connected with the blade and the main framework, wherein the branch air passage penetrates through the hollow support tube; wherein m blades are provided with through holes, and m is more than or equal to n。 Preferably, the through holes are communicated with the branch air channels, so that the external air source air can be ensured to flow along the air channel, and the through holes of the main air channel, the branch air channel, the main framework branch and the hollow supporting tubes and the blades of the transmission shaft are purged from inside to outside. In one embodiment, the relation between the number N of branches and the blade height H is that n=h/10×4, N is a natural number, and the height unit