Search

CN-224208554-U - Secondary air separation system

CN224208554UCN 224208554 UCN224208554 UCN 224208554UCN-224208554-U

Abstract

The utility model belongs to the technical field of tobacco processing, and discloses a secondary air separation system. The tobacco shred separating device comprises a feeding mechanism, a first winnowing device, a first conveying device and a second winnowing device, wherein the first conveying device conveys tobacco shreds into the second winnowing device, a circulating pipe is arranged on an air inlet of a fan, a main conveying pipe is vertically arranged on the upper side of the first winnowing device, the tobacco shreds are pulled out by the main conveying pipe, an auxiliary conveying pipe is arranged on the upper side of the second winnowing device, the tobacco shreds are pulled out by the auxiliary conveying pipe, the auxiliary conveying pipe is communicated with the circulating pipe, a filter screen is arranged at the joint of the circulating pipe and the auxiliary conveying pipe, the auxiliary conveying pipe is also communicated with the main conveying pipe, and the problem that tobacco shreds subjected to secondary air separation fall on a main conveying belt in the prior art and can cause abnormal stacking of the tobacco shreds to cause blockage in the subsequent processing process is solved.

Inventors

  • WANG HAIMING
  • YAO QINGFENG
  • CAI ZHONGWEN
  • WU LONGYUAN
  • LIN PAN

Assignees

  • 广东中烟工业有限责任公司

Dates

Publication Date
20260508
Application Date
20250410

Claims (10)

  1. 1. A secondary air separation system, comprising: the feeding mechanism is used for conveying tobacco cut stems; The feeding mechanism conveys the tobacco cut stems into the first air separation device (2); a first conveying device which receives the tobacco stem shreds discharged by the first winnowing device (2); A second air separation device (6), wherein the first conveying device conveys the tobacco stem shreds into the second air separation device (6); The circulating pipe (9) is arranged on an air inlet of the fan (10); The tobacco shred collecting and conveying device is characterized in that a main conveying pipe (3) is vertically arranged on the upper side of the first winnowing device (2), tobacco shreds are pulled out by the main conveying pipe (3), an auxiliary conveying pipe (7) is arranged on the upper side of the second winnowing device (6), the tobacco shreds are pulled out by the auxiliary conveying pipe (7), the auxiliary conveying pipe (7) is communicated with the circulating pipe (9), a filter screen (14) is arranged at the joint of the circulating pipe (9) and the auxiliary conveying pipe (7), and the auxiliary conveying pipe (7) is communicated with the main conveying pipe (3).
  2. 2. Secondary air separation system according to claim 1, characterized in that the end of the secondary duct (7) is connected to a blanking device (15), the blanking device (15) collects the cut tobacco in the secondary duct (7), the bottom of the blanking device (15) is connected to the main duct (3).
  3. 3. Secondary air separation system according to claim 2, characterized in that the blanking device (15) comprises a collecting part, the inner periphery of the collecting part forms a conical cavity, the cut tobacco is collected to the bottom, and the side wall of the collecting part is provided with an observation window.
  4. 4. The secondary air separation system according to claim 1, wherein a vibrating screen (61) is installed at the bottom of the second air separation device (6), an air inlet pipe (8) is installed at the lower side of the vibrating screen (61), the air inlet pipe (8) is communicated with the circulating pipe (9), and the fan (10) supplies air into the air inlet pipe (8).
  5. 5. The secondary air separation system according to claim 1, wherein the feeding mechanism comprises a first thrower (11), a first cylinder is mounted on the side wall of the first air separation device (2), the first thrower (11) comprises a first rotating blade and a first motor, the first rotating blade is circumferentially mounted on an output shaft of the first motor, a first accommodating cavity is formed by surrounding the adjacent first rotating blade and the inner wall of the first cylinder, the first accommodating cavity is isolated from each other, the first cylinder is communicated with the inside of the first air separation device (2), and the feeding mechanism further comprises a first vibrating groove (1), and the first vibrating groove (1) conveys tobacco cut stems into the first cylinder.
  6. 6. The secondary air separation system according to claim 1, wherein the first conveying device comprises a first conveying belt (4) and a second vibrating groove (5), the first conveying belt (4) comprises a conveying section (41) and a lifting section (42), the conveying section (41) is installed on the lower side of an outlet of the first air separation device (2), the lifting section (42) is obliquely connected to one end of the conveying section (41), the second vibrating groove (5) is installed on the lower side of the lifting section (42), the second vibrating groove (5) receives tobacco stems falling from the top end of the lifting section (42), and the second vibrating groove (5) conveys the tobacco stems into the second air separation device (6).
  7. 7. The secondary air separation system according to claim 6, wherein a second cylinder and a second thrower (12) are installed on the side wall of the second air separation device (6), the second thrower (12) comprises a second rotating blade and a second motor, the second rotating blade is circumferentially installed on an output shaft of the second motor, a second accommodating cavity is formed by surrounding adjacent second rotating blades and the inner wall of the second cylinder, the second accommodating cavities are isolated from each other, the second cylinder is also communicated with the second air separation device (6), and the second vibrating groove (5) conveys tobacco cut stems into the second cylinder.
  8. 8. The secondary air separation system according to claim 2, wherein a third cylinder is mounted at the bottom of the blanking device (15), a third thrower (13) is mounted on the third cylinder, the third thrower (13) comprises a third rotary blade and a third motor, the third rotary blade is circumferentially mounted on an output shaft of the third motor, a third accommodating cavity is formed by surrounding adjacent third rotary blades and the inner wall of the third cylinder, the third accommodating cavities are isolated from each other, and the third cylinder is also communicated with the main conveying pipe (3).
  9. 9. Secondary air separation system according to claim 1, characterized in that the side wall of the main conveyor pipe (3) is provided with an opening, a bolt is rotatably mounted on the upper side of the opening, a cover plate (16) is fixed on the bolt, and the cover plate (16) covers the opening.
  10. 10. Secondary air selection system according to claim 1, characterized in that the main conveyor pipe (3), the conveyor pipe and the circulation pipe (9) are all equipped with wind speed sensors, which are able to detect wind speed and/or wind pressure, which are electrically connected to the fan (10).

Description

Secondary air separation system Technical Field The utility model relates to the technical field of tobacco processing, in particular to a secondary air separation system. Background In tobacco processing, caking cut stems can occur, and the caking cut stems are mainly caused by extrusion of cut tobacco materials by an airlock on the existing cut tobacco processing production line, in addition, due to different quality of raw material production places of the cut tobacco, impurities such as cut stems and the like can be mixed in part of the cut tobacco, and after the cut tobacco is dried by an SH23B low-speed air flow dryer, wet lumps and clusters still remain in the cut tobacco, so that the quality of the final cut tobacco is different, and potential quality hazards such as puncture, blank head and the like appear when the final cut tobacco is finally prepared into cigarettes. In the prior art, wet clusters, cut stems and stem sticks in tobacco cut stems are removed through a vertical winnowing device, tobacco cut stems are fed into a winnowing device, so that wet clusters, cut stems and stem sticks with larger weight automatically fall down, and cut tobacco with lighter weight can be sucked out to a discharging pipeline or a conveying belt by a fan, and because the winnowing capability of the winnowing device is weaker, in order to remove more impurities, a plurality of screening devices are arranged at the rear side of a dryer, auxiliary screening is performed through the winnowing devices, multi-stage screening is formed, most commonly, the impurities are removed through twice screening, and the tobacco cut stems left from the previous stage are received by the second-stage winnowing device for winnowing, the tobacco stem shred recycling device has the advantages that the residual dry tobacco shreds in the tobacco stem shreds can be recycled again, the waste of the tobacco shreds is avoided, the conveying device needed after the second-stage air separator is installed is increased, the second-stage air separator needs to be combined with the tobacco shreds screened by the previous-stage air separator, the second-stage selected tobacco shreds are conveyed onto the auxiliary conveying belt in an air conveying mode, the tobacco shreds on the auxiliary conveying belt are conveyed onto the main conveying belt, the tobacco shreds are abnormally stacked, the tobacco shred density of a part of the area is too high, the phenomenon of tobacco shred blockage can occur in the subsequent processing process, meanwhile, under the structure, multiple groups of conveying belts are responsible for conveying the tobacco shreds or the tobacco stem shreds, and the tobacco shreds after winnowing are conveyed by the conveying belts can further occupy the space of a factory. The working air quantity of the air classifier is increased in another mode, the working screening capacity of a single air classifier is improved, but the energy waste is caused when the fan works, and working noise is increased. Disclosure of utility model The utility model aims to provide a secondary air separation system, which solves the problem that tobacco shreds subjected to secondary air separation in the prior art fall on a main conveyor belt to cause abnormal stacking of the tobacco shreds and cause blockage of the tobacco shreds in the subsequent processing process. The utility model provides a secondary air separation system, which comprises: the feeding mechanism is used for conveying tobacco cut stems; the feeding mechanism conveys the tobacco cut stems into the first air separation device; The first conveying device receives the tobacco stem shreds discharged by the first winnowing device; The first conveying device conveys the tobacco stem shreds into the second air separation device; The circulating pipe is arranged on the air inlet of the fan; The tobacco shred collecting and conveying device is characterized in that a main conveying pipe is vertically arranged on the upper side of the first winnowing device, tobacco shreds are pulled out by the main conveying pipe, an auxiliary conveying pipe is arranged on the upper side of the second winnowing device, the tobacco shreds are pulled out by the auxiliary conveying pipe, the auxiliary conveying pipe is communicated with the circulating pipe, a filter screen is arranged at the joint of the circulating pipe and the auxiliary conveying pipe, and the auxiliary conveying pipe is communicated with the main conveying pipe. Preferably, the end of the auxiliary conveying pipe is communicated with a blanking device, the blanking device collects cut tobacco in the auxiliary conveying pipe, and the bottom of the blanking device is communicated with the main conveying pipe. Preferably, the blanking device comprises a collecting part, a conical cavity is formed in the inner periphery of the collecting part, the cut tobacco is collected to the bottom, and an observation window is arranged on the side wa