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CN-117225707-B - Tobacco shred winnowing equipment and tobacco shred winnowing method

CN117225707BCN 117225707 BCN117225707 BCN 117225707BCN-117225707-B

Abstract

The invention discloses tobacco shred winnowing equipment and a tobacco shred winnowing method, which comprise a winnowing mechanism, wherein the winnowing mechanism comprises a tobacco shred conveying pipe, a conveying fan, a winnowing tank, an air injection mechanism and a centrifugal rotating mechanism, the centrifugal rotating mechanism comprises a rotating motor, a chassis which is rotatably arranged below the winnowing tank, a filter screen, the filter screen is horizontally arranged in the chassis, the chassis and the filter screen are driven by the rotating motor, an air storage device is arranged on the chassis, an air inlet hole is formed in the chassis, an air inlet end of the air inlet hole is communicated with the air storage device, an air outlet end of the air inlet hole points to the filter screen, a plurality of air inlet holes are arranged around the axis of the chassis, and the air injection mechanism is arranged below the filter screen. In the process of separating the stem sticks, the rigid collision and extrusion of the cut tobacco are avoided, so that the breakage rate of the cut tobacco is reduced. In addition, compared with the carding roller in the prior art, the centrifugal rotating mechanism has obviously smaller volume, thereby improving the compactness of the whole winnowing equipment and reducing the occupied area.

Inventors

  • HE ZHAOWEI
  • JIN ZHE
  • GU CHAOLIN
  • LI YUE
  • PU YONGGE
  • QIU HAOFENG
  • HUANG SHUYONG
  • HAN LONGYANG

Assignees

  • 吉林烟草工业有限责任公司

Dates

Publication Date
20260512
Application Date
20230925

Claims (15)

  1. 1. A tobacco shred winnowing device comprises a winnowing mechanism, a winnowing tank (1) and an air injection mechanism, wherein the winnowing mechanism comprises a tobacco shred conveying pipe (16), a conveying fan (17) arranged at one end of the tobacco shred conveying pipe (16), a conveying port arranged at the other end of the tobacco shred conveying pipe (16), the winnowing tank (1) arranged below the tobacco shred conveying pipe (16), the winnowing tank (1) is communicated with the tobacco shred conveying pipe (16), and the air injection mechanism is arranged below the winnowing tank (1); the centrifugal rotating mechanism is characterized by further comprising a centrifugal rotating mechanism, and the centrifugal rotating mechanism comprises: A rotating electrical machine (5); The chassis (4) is rotatably arranged below the winnowing tank (1), and a space surrounded by the chassis (4) is communicated with the inner cavity of the winnowing tank (1); the filter screen (7) is horizontally arranged in the chassis (4), and the chassis (4) and the filter screen (7) are driven by the rotating motor (5); The air storage device is characterized in that an air inlet hole (11) is formed in the chassis (4), the air inlet hole (11) is gradually inclined downwards in the horizontal direction and in the direction from the outside of the chassis (4) to the inside of the chassis (4), the air inlet end of the air inlet hole (11) is communicated with the air storage device, the air outlet end of the air inlet hole (11) points to the filter screen (7), the air outlet end of the air inlet hole (11) is positioned above the filter screen (7), and the air inlet holes (11) are arranged in a plurality of ways around the axis of the chassis (4); The air injection mechanism is arranged below the filter screen (7), and an air nozzle of the air injection mechanism faces the filter screen (7).
  2. 2. A tobacco shred winnowing device according to claim 1, characterized in that a plurality of turns of the air intake holes (11) are provided on the chassis (4) along the axial direction of the chassis (4).
  3. 3. The tobacco shred winnowing device according to claim 1, wherein a mounting groove (3) is formed in the bottom end face of the winnowing tank (1), a notch of the mounting groove (3) faces downwards, and the chassis (4) is slidably matched in the mounting groove (3) through balls.
  4. 4. The tobacco shred winnowing equipment according to claim 1, wherein the centrifugal rotating mechanism further comprises a support (6), an annular pushing plate (8) and a first air cylinder (10), the lower end of the support (6) is connected with a motor shaft of the rotating motor (5), the upper end of the support (6) is connected with the chassis (4), the annular pushing plate (8) can be matched in the chassis (4) in a vertically movable mode, the filter screen (7) is fixedly arranged in the annular pushing plate (8), the annular pushing plate (8) is located below an air outlet end of the air inlet hole (11), a cylinder seat of the first air cylinder (10) is fixed on the support (6), a piston rod of the first air cylinder (10) faces upwards vertically, and a piston rod of the first air cylinder (10) is connected with the annular pushing plate (8).
  5. 5. A tobacco shred winnowing device as claimed in claim 4, wherein the upper end surface of the annular pushing plate (8) is a conical inclined surface (9), and the conical inclined surface (9) is gradually inclined downwards along the direction approaching the center of the filter screen (7).
  6. 6. The tobacco shred winnowing device as claimed in claim 1, wherein said air storage means comprises: the air storage tank (14), the air storage tank (14) is fixedly arranged on the outer surface of the winnowing tank (1); a hard gas pipe (15); The annular air inlet shell (12), the both ends of stereoplasm gas-supply pipe (15) respectively with gas holder (14) with annular air inlet shell (12), annular air inlet shell (12) sliding fit in outside chassis (4), annular air inlet shell (12) with the space that chassis (4) encloses with the inlet end intercommunication of inlet port (11).
  7. 7. The tobacco shred winnowing device according to claim 6, wherein a partition plate (24) is arranged on the inner wall of the annular air inlet shell (12), the partition plate (24) extends to the chassis (4) along the horizontal direction, a ventilation space is arranged between the partition plate (24) and the chassis (4), and the partition plate (24) is a plurality of partition plates arranged around the axis of the chassis (4).
  8. 8. The tobacco shred winnowing device according to claim 4, characterized in that the air injection mechanism comprises a base (22) and the air nozzle, wherein the base (22) is connected with the bracket (6), and the air nozzle is arranged on the base (22), and comprises a first air nozzle (20) and a second air nozzle (21); the first air nozzles (20) are arranged close to the edge of the filter screen (7), the first air nozzles (20) incline towards the center of the filter screen (7), the first air nozzles (20) are arranged around the axis of the filter screen (7), the second air nozzles (21) are arranged close to the center of the filter screen (7), the second air nozzles (21) incline towards the edge of the filter screen (7), and the second air nozzles (21) are arranged around the axis of the filter screen (7).
  9. 9. The tobacco shred winnowing device according to claim 8, wherein the first air nozzle (20) is inclined cylindrical, and the second air nozzle (21) is inclined single-leaf hyperboloid.
  10. 10. The tobacco shred winnowing device according to claim 8, characterized in that the second air nozzle (21) is higher than the first air nozzle (20), and the second air nozzle (21) is arranged in a staggered manner with respect to the first air nozzle (20).
  11. 11. The tobacco shred winnowing device according to claim 1, wherein the winnowing mechanism further comprises a block assembly, the block assembly comprises a block (18) and a second air cylinder (19), the block (18) is arranged on the upper portion of the tobacco shred conveying pipe (16), a through hole matched with the block (18) is formed in the tobacco shred conveying pipe (16), the second air cylinder (19) is fixedly arranged above the block (18), a piston of the second air cylinder (19) is downwards arranged and connected with the block (18), and the block (18) can extend into the tobacco shred conveying pipe (16) under the driving of the second air cylinder (19).
  12. 12. The tobacco shred winnowing device according to claim 11, wherein the stopper (18) is internally provided with a vent hole (25), the vent end of the vent hole (25) is formed on the upper surface of the stopper (18), the air inlet end of the vent hole (25) is formed on the side surface of the stopper (18), and the air inlet end is spaced from the bottom surface of the stopper (18) by a predetermined distance.
  13. 13. A tobacco shred winnowing device according to claim 1, characterized in that the inner wall of the winnowing tank (1) is provided with vertical guide grooves, and the vertical guide grooves (27) are a plurality of arranged around the axis of the winnowing tank (1).
  14. 14. A tobacco shred winnowing method based on the tobacco shred winnowing device of claim 8, comprising: The tobacco shred to be winnowed is put into the winnowing tank (1), the air injection mechanism and the conveying fan (17) are started to winnow the tobacco shred, and the tobacco shred separated by the air flow injected by the air injection mechanism enters the tobacco shred conveying pipe (16) through the winnowing tank (1) and is output from an output port of the tobacco shred conveying pipe (16); The separation method comprises the steps of closing the air injection mechanism and the conveying fan (17), starting the rotating motor (5) to drive the chassis (4) to rotate, enabling cut tobacco to move towards the edge part of the filter screen (7), closing the rotating motor (5), starting the first air cylinder (10), pushing the filter screen (7) upwards through the annular push plate (8), enabling the air storage device to convey compressed air to the air inlet hole (11), and blowing the cut tobacco gathered at the edge part of the filter screen (7) towards the central part of the filter screen (7), so that the cut tobacco and the stem are separated, and meanwhile, the cut tobacco dust falls down through the filter screen (7); Repeating the air separation method and the separation method to realize the circular air separation of the tobacco shreds.
  15. 15. The tobacco shred winnowing method according to claim 14, wherein in the separating method, the rotating motor (5) drives the chassis (4) to rotate, specifically, after the rotating speed of the chassis (4) reaches a first rotating speed within a preset starting time of the rotation of the chassis (4), the rotating motor (5) controls the chassis (4) to decelerate to a second rotating speed and then accelerate to the first rotating speed, and the method is repeated in such a way that the second air nozzle (21) is started to purge tobacco shreds when the chassis (4) decelerates each time, the flow rate of the second air nozzle (21) is smaller than the flow rate of the second air nozzle (21) in the winnowing method, and after the preset starting time is exceeded, the rotating speed of the chassis (4) reaches the highest rotating speed until the execution of the current rotating time is completed.

Description

Tobacco shred winnowing equipment and tobacco shred winnowing method Technical Field The invention relates to the field of tobacco processing, in particular to tobacco shred winnowing equipment and a tobacco shred winnowing method. Background After the cut tobacco is dried, the stems in the cut tobacco are required to be separated, and the agglomerated cut tobacco is loosened. In the prior art, air separation equipment is generally used for loosening tobacco shreds and separating stems. However, in order to ensure the air separation rate, the existing air separation equipment generally adopts multistage air separation matched with a carding roller for air separation. The carding roller has larger volume, thereby leading the air separation equipment to occupy larger area. In addition, when the stem sticks are separated by the combing roller, rigid collision and extrusion can be formed on the cut tobacco, so that the cut tobacco is broken. Therefore, how to reduce the volume of the winnowing device and reduce the breakage rate of tobacco shreds is a critical problem to be solved urgently by those skilled in the art. Disclosure of Invention The invention aims to reduce the volume of the winnowing equipment and the breakage rate of tobacco shreds In order to achieve the above object, the present invention provides the following technical solutions: a tobacco shred winnowing device comprises a tobacco shred conveying pipe, a conveying fan, a winnowing tank, an air jetting mechanism and a tobacco shred blowing device, wherein the conveying fan is arranged at one end of the tobacco shred conveying pipe, the other end of the tobacco shred conveying pipe is a conveying port; Still include centrifugal rotary mechanism, centrifugal rotary mechanism includes: A rotating electric machine; The chassis is rotatably arranged below the winnowing tank, and a space surrounded by the chassis is communicated with the winnowing tank; The filter screen is horizontally arranged in the chassis, and the chassis and the filter screen are driven by the rotating motor; the air storage device is provided with an air inlet hole, the air inlet hole is gradually inclined downwards in the horizontal direction and in the direction from the outside of the chassis to the inside of the chassis, the air inlet end of the air inlet hole is communicated with the air storage device, the air outlet end of the air inlet hole points to the filter screen, and the air inlet holes are arranged around the axis of the chassis; The air injection mechanism is arranged below the filter screen, and an air nozzle of the air injection mechanism faces the filter screen. Preferably, a plurality of circles of the air inlet holes are arranged on the chassis along the axial direction of the chassis. Preferably, the bottom end face of the winnowing tank is provided with a mounting groove, the notch of the mounting groove faces downwards, and the chassis is in sliding fit in the mounting groove through a ball. Preferably, the centrifugal rotating mechanism further comprises a support, an annular push plate and a first air cylinder, wherein the lower end of the support is connected with a motor shaft of the rotating motor, the upper end of the support is connected with the chassis, the annular push plate is slidably fit into the chassis, the filter screen of the annular push plate is fixedly arranged in the annular push plate, the annular push plate is located below the air outlet end of the air inlet hole, the cylinder seat of the first air cylinder is fixed on the support, the piston rod of the first air cylinder faces upwards vertically, and the piston rod of the first air cylinder is connected with the annular push plate. Preferably, the upper end surface of the annular push plate is a conical inclined surface, and the conical inclined surface gradually inclines downwards along the direction approaching to the center of the filter screen. Preferably, the gas storage device includes: the air storage tank is fixedly arranged on the outer surface of the winnowing tank; A hard gas pipe; The annular air inlet shell, the both ends of stereoplasm gas-supply pipe respectively with the gas holder with annular air inlet shell is connected, annular air inlet shell sliding fit in the periphery of chassis, annular air inlet shell with the space that the chassis encloses with the inlet end intercommunication of inlet port. Preferably, a partition plate is arranged on the inner wall of the annular air inlet shell, the partition plate extends to the chassis along the horizontal direction, a ventilation space is formed between the partition plate and the chassis, and the partition plate is a plurality of partition plates which are arranged around the axis of the chassis. Preferably, the air injection mechanism comprises a base and an air nozzle, wherein the base is connected with the bracket, and the air nozzle is arranged on the base; the first air nozzles are arranged close to the