Conveying mechanism and tobacco shred winnowing equipment

Abstract

The utility model relates to a conveying mechanism and tobacco shred winnowing equipment. The conveying mechanism is configured to be used for conveying screened-out materials obtained after primary winnowing in the tobacco shred winnowing process, and is characterized by comprising a shell, a conveying mechanism, a first-stage winnowing device and a second-stage winnowing device, the first outlet is formed in one side of the shell in the horizontal direction; the second outlet is formed in the other side of the shell in the horizontal direction; the conveying belt is arranged in the shell, is tensioned into a ring shape around shafts located on the two sides of the shell in the horizontal direction, extends from one side to the other side, and can rotate in the clockwise direction and the anticlockwise direction so as to convey screened objects in the first direction and the second direction opposite to the first direction; the conveying belt is made of a belt with meshes; and the air bellow is arranged below the conveying belt in the shell.

Description

Technical Field

[0001] The present invention relates to a conveying mechanism and a tobacco wind selection device comprising the conveying mechanism. Background Art

[0002] In the process of cigarette production, tobacco shreds contain a lot of impurities after drying, such as entangled silk balls, stems and other components, which cause the finished cigarette weight to be off-standard and the cigarettes to be loose during the cigarette making process. In addition, the cigarettes will have popping and tilting heads when burning, which seriously affects the quality of cigarette making. The impurities are generally removed from the tobacco shreds by air separation.

[0003] The wind selection method is a method of removing impurities with the help of wind by utilizing the difference in suspension speed between tobacco and impurities.

[0004] Figure 1 The figure schematically shows the structure of an existing tobacco wind selection device. Figure 1 The tobacco wind separation equipment in the process performs the wind separation process on the tobacco. Figure 1 As shown, the tobacco wind selection equipment includes a wind selection box 6, a first conveying device 1 for conveying tobacco to be wind-selected (feed tobacco) to the left end of the wind selection box 6, and a second conveying device 4 arranged between the first conveying device 1 and the left end of the wind selection box 6. Among them, the conveying speed of the second conveying device 4 is greater than the conveying speed of the first conveying device 1. The tobacco wind selection equipment also includes a fan 2 for supplying air to the left end of the wind selection box 6, and a circulation pipeline 3, and the circulation pipeline 3 connects the right end of the wind selection box 6 and the air inlet of the fan 2.

[0005] The bottom wall of the air separation box 6 is provided with a debris drop-out port 5 extending in the vertical direction, and the debris drop-out port 5 is provided near the left end of the air separation box 6, so that the debris with a higher density (the sieved material after air separation) can be discharged from the debris drop-out port 5. The air outlet of the fan 2 is connected to the debris drop-out port 5. The air sent from the fan 2 moves upward along the inner wall of the debris drop-out port 5.

[0006] The feed tobacco is transported to the second transport device 4 via the first transport device 1, and the second transport device 4 accelerates the feed tobacco to make it thinner. After being transported by the second transport device 4, the feed tobacco is thrown from the right end of the second transport device 4 to the air separation box 6.

[0007] The fan 2 supplies air to the debris discharge port 5 of the air separation box 6, and the wind that enters the air separation box 6 upward from the debris discharge port 5 flows toward the right end of the air separation box 6. The tobacco shreds are light in weight, are carried by the wind and finally fall into the conveyor in the air separation box 6, and the sieved materials such as stems, agglomerated tobacco shreds, etc. fall into the debris discharge port 5 due to their heavy weight. The right end of the air separation box 6 is provided with a discharge port for discharging the selected tobacco shreds, and the discharge port is provided with a discharge air lock 7 for closing the discharge port.

[0008] The air in the air separation box 6 returns to the fan 2 via the circulation pipeline 3, thereby preparing for the air separation of the next batch of feed tobacco.

[0009] For different qualities of tobacco, in order to improve the precision of impurity removal, cigarette factories sometimes use secondary air separation equipment. Figure 1 The described tobacco wind selection equipment performs primary selection through the first-stage wind selection, and then performs secondary high-precision wind selection on the screened materials (such as stems and a small amount of tobacco (mainly shredded tobacco, wet tobacco)). The qualified tobacco after the first and second stage wind selection is collected through the air conveying pipeline and transported to the designated location for discharge and entry into the next process. During the first and second stage wind selection process, parameters such as air volume can be adjusted to meet the requirements of the finished tobacco.

[0010] Due to the different qualities of tobacco of different brands, some brands of tobacco do not need to go through the secondary air separation process. However, in the existing air separation equipment, the first and second air separations are integrated designs, and all brands of tobacco need to go through the primary air separation and then the secondary air separation. Therefore, the existing air separation equipment increases energy consumption and prolongs production time. Utility Model Content

[0011] In order to overcome at least one of the above defects, according to the first aspect of the present disclosure, a conveying mechanism is provided, which is configured to convey the screened material after the first level of air selection in the tobacco air selection process, and is characterized in that the conveying mechanism comprises: a shell; a first outlet, which is arranged on one side of the shell in the horizontal direction; a second outlet, which is arranged on the other side of the shell in the horizontal direction; a conveyor belt, which is arranged inside the shell, is stretched into a ring around an axis located on both sides of the shell in the horizontal direction, extends from the one side to the other side, and can rotate in clockwise and counterclockwise directions to convey the screened material in a first direction and in a second direction opposite to the first direction, and the conveyor belt is made of a belt with mesh holes; and a bellows, which is arranged below the conveyor belt inside the shell.

[0012] Preferably, the first outlet is configured to discharge the screened material, and the second outlet is configured to guide the screened material to a secondary air separation process.

[0013] Preferably, the conveying mechanism further comprises a shredded tobacco cluster opener, which is disposed below the second outlet and is configured to open the shredded tobacco clusters in the screened material.

[0014] Preferably, the conveying mechanism further comprises a detection window, which is transparent or translucent and can be opened and closed.

[0015] Preferably, the conveying mechanism further comprises an ash collecting hopper, which is arranged at the bottom of the conveying mechanism and is configured to collect dust and fine impurities carried in the wind and discharge them into the dust removal pipe network.

[0016] Preferably, both the first outlet and the second outlet are provided with an air lock.

[0017] According to another aspect of the present disclosure, a tobacco air selection device is also provided, characterized in that the tobacco air selection device comprises: a tobacco air selection mechanism, which is configured to perform a primary air selection process on the input tobacco, and includes a discharge port, through which the tobacco selected after the primary air selection process leaves the tobacco air selection mechanism; a conveying mechanism according to the first aspect, wherein the conveyor belt is configured so that the sieved material after the primary air selection process falls onto the conveyor belt, and the bellows is connected to the fan of the tobacco air selection mechanism, so that the wind delivered by the fan passes upward through the conveyor belt via the bellows and enters the tobacco air selection mechanism.

[0018] Preferably, the tobacco wind selection device further comprises a motor and a processor, wherein the motor is configured to drive the shaft, and the processor is configured to control the rotation direction of the motor, thereby controlling the rotation direction of the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Aspects of the present disclosure will be better understood after reading the following detailed description in conjunction with the accompanying drawings, in which:

[0020] Figure 1 The figure schematically shows the structure of an existing tobacco wind selection device;

[0021] Figure 2 is a perspective view schematically showing a tobacco wind selection device according to an embodiment of the present disclosure;

[0022] Figure 3 It is a schematic diagram schematically showing the structure of the conveying mechanism of the tobacco wind selection equipment according to the embodiment of the present disclosure. DETAILED DESCRIPTION

[0023] The present disclosure will be described below with reference to the accompanying drawings, wherein the accompanying drawings illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in a variety of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments. In addition, the drawings only schematically illustrate the embodiments and are not necessarily drawn to scale.

[0024] It should be understood that in all the drawings, the same reference numerals represent the same elements. The terms in the specification are only used to describe specific embodiments and are not intended to limit the present disclosure. All terms (including technical terms and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of simplicity and / or clarity, well-known functions or structures may not be described in detail.

[0025] like Figure 2 As shown, the tobacco wind selection device according to the embodiment of the present disclosure includes a tobacco wind selection mechanism 100 and a conveying mechanism 200. The structure of the tobacco wind selection mechanism 100 is similar to that of the above-mentioned reference Figure 1 The present tobacco wind selection equipment is similar to the one described above, and the feed tobacco is subjected to a primary wind selection process. The selected tobacco leaves the tobacco wind selection mechanism 100 through the discharge port 101 after the primary wind selection to enter the subsequent process. The screened products (stems, agglomerated tobacco, etc.) screened during the primary wind selection fall onto the conveying mechanism 200.

[0026] Refer to the following Figure 3 A conveying mechanism according to an embodiment of the present disclosure is described.

[0027] The conveying mechanism 200 is used to convey the screened material after the primary air selection during the tobacco winnowing process, and includes a housing, a conveyor belt 201, a wind box 202, a first outlet 203 and a second outlet 204. The first outlet 203 and the second outlet 204 are arranged on opposite sides of the housing of the conveying mechanism 200 in the horizontal direction, and the conveyor belt 201 and the wind box 202 are arranged inside the housing. The first outlet 203 is the screened material discharge outlet, and the screened material is discharged through the first outlet 203. The second outlet 204 is the secondary air selection inlet, and the screened material is guided to the secondary air selection process through the second outlet 204. Preferably, both the first outlet 203 and the second outlet 204 are provided with air locks.

[0028] The conveyor belt 201 extends from a side close to the first outlet 203 to a side close to the second outlet 204. The conveyor belt 201 is annular and is stretched around shafts 2011 and 2012 located on both sides of the housing in the horizontal direction so as to be able to move along the conveyor belt. Figure 3 The conveyor belt 201 is made of a belt with meshes. The size of the meshes can be set according to the size of the screened products (stems, agglomerated tobacco, etc.) of the first-level air selection.

[0029] During operation, the conveyor belt 201 is driven along different rotation directions by a motor (not shown) to drive the shafts 2011 and 2012. Figure 3The conveyor belt 201 rotates in the clockwise direction and the counterclockwise direction. When the conveyor belt 201 rotates in the clockwise direction, the conveying direction is the +X direction, and the screened material is conveyed toward the second outlet 204. When the conveyor belt 201 rotates in the counterclockwise direction, the conveying direction is the -X direction, and the screened material is conveyed toward the first outlet 203. The operator can control the rotation direction of the motor via a processor (not shown) to change the conveying direction of the screened material on the conveyor belt 201. Preferably, the processor can be a remote computer, so that the operator can switch the conveying direction through the monitoring screen.

[0030] The bellows 202 is arranged below the conveyor belt 201 and can be connected to the fan of the tobacco wind selection mechanism 100, so that the wind sent by the fan passes upward through the conveyor belt 201 through the bellows 202 and enters the tobacco wind selection mechanism 100, thereby performing primary wind selection on the input tobacco.

[0031] Optionally, the conveying mechanism 200 may further include one or more components of a yarn ball opener 205 , inspection windows 206 , 207 , and an ash collecting hopper 208 .

[0032] The shredded tobacco clumping device 205 is arranged below the second outlet 204, and can loosen the clumped shredded tobacco in the sieves passing through the second outlet 204, and play a buffering role on the sieves, so as to facilitate the air separation of the clumped shredded tobacco in the secondary air separation process.

[0033] The inspection windows 206 and 207 are transparent or translucent and can be opened and closed for the operator to approach the interior of the conveying mechanism 200. The provision of the inspection windows 206 and 207 can facilitate the daily inspection and maintenance of the conveying mechanism 200.

[0034] The dust collecting hopper 208 is arranged at the bottom of the conveying mechanism 200, and is configured to collect dust and fine impurities carried in the wind and discharge them into the dust removal pipe network.

[0035] The working process of the tobacco wind selection equipment according to the embodiment of the present disclosure is described below.

[0036] After the tobacco is subjected to the primary air selection process by the tobacco air selection mechanism 100, the selected tobacco leaves the tobacco air selection mechanism 100 through the discharge port 101, and the screened materials (stems, agglomerated tobacco, etc.) screened during the primary air selection fall onto the conveyor belt 201. The operator determines whether to perform secondary air selection on the screened materials according to the demand for the finished tobacco products. When the screened materials do not need to be subjected to secondary air selection, the operator controls the rotation direction of the motor through the processor so that the conveyor belt 201 rotates in the counterclockwise direction, so that the screened materials are transported toward the first outlet 203 and discharged through the first outlet 203. When the screened materials need to be subjected to secondary air selection, the operator controls the rotation direction of the motor through the processor so that the conveyor belt 201 rotates in the clockwise direction, so that the screened materials are transported toward the second outlet 204 and enter the secondary air selection process through the second outlet 204.

[0037] By means of the conveying mechanism 200 disclosed in the present invention, the feed tobacco can be conveniently switched between the primary air selection mode and the secondary air selection mode, and the air selection equipment can be controlled in sections, so as to adapt to the production processes of tobacco products of different brands, and at the same time, the energy consumption of production can be effectively reduced. When the tobacco only needs to be subjected to primary air selection, the secondary air selection equipment can be disabled to reduce energy waste and shorten production time.

[0038] In addition, the conveying mechanism 200 of the present invention can be integrally installed at the bottom of the existing tobacco wind selection equipment, thereby forming the tobacco wind selection equipment of the present invention. Therefore, the conveying mechanism of the present invention is easy to install, saves installation cost and time, and is easy to use.

[0039] The embodiments of the present disclosure are described above, but it should be understood that the present disclosure is not limited thereto. A person skilled in the art may conceive of various modifications without departing from the scope of the present disclosure.

[0040] For example, in the above-described embodiment, the first outlet 203 is a screened material outlet, and the second outlet 204 is a secondary air separation inlet. However, it is conceivable that the first outlet 203 and the second outlet 204 are interchangeable. That is, the first outlet 203 is a secondary air separation inlet, and the second outlet 204 is a screened material outlet. In this case, when the silk group opener 205 is provided, the silk group opener 205 is provided below the first outlet 203.

[0041] It should be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included in the scope of protection of the present disclosure as defined by the claims. The present disclosure is defined by the attached claims, and the equivalents of these claims are also included.

Claims

1. A conveying mechanism, configured to convey the screened material after primary air selection in the process of air selection of shredded tobacco, characterized in that: The conveying mechanism comprises: case; a first outlet, the first outlet being arranged on one side of the housing in a horizontal direction; a second outlet, the second outlet being arranged at the other side of the housing in the horizontal direction; A conveyor belt, the conveyor belt is arranged inside the housing, is stretched into a ring shape around axes located at both sides of the housing in a horizontal direction, extends from the one side to the other side, and can rotate in clockwise and counterclockwise directions to convey the screened material in a first direction and a second direction opposite to the first direction, the conveyor belt being made of a belt with meshes; A bellows is arranged inside the shell below the conveyor belt.

2. The conveying mechanism according to claim 1, characterized in that: The first outlet is configured to discharge the screened material, and the second outlet is configured to guide the screened material to a secondary air separation process.

3. The conveying mechanism according to claim 2, characterized in that: The conveying mechanism further comprises a shredded tobacco cluster opener, which is arranged below the second outlet and is configured to open the shredded tobacco clusters in the screened material.

4. The conveying mechanism according to claim 1, characterized in that: The conveying mechanism further includes a detection window, which is transparent or translucent and can be opened and closed.

5. The conveying mechanism according to claim 1, characterized in that: The conveying mechanism also includes an ash collecting hopper, which is arranged at the bottom of the conveying mechanism and is configured to collect dust and fine impurities carried in the wind and discharge them into the dust removal pipe network.

6. The conveying mechanism according to claim 1, characterized in that: The first outlet and the second outlet are both provided with an air lock.

7. A tobacco wind selection device, characterized in that: The tobacco wind selection equipment comprises: A tobacco wind selection mechanism, the tobacco wind selection mechanism is configured to perform a primary wind selection process on the input tobacco, and comprises a discharge port, through which the tobacco selected after the primary wind selection process leaves the tobacco wind selection mechanism; A conveying mechanism according to any one of claims 1 to 6, wherein the conveyor belt is constructed so that the sieved material after the primary air separation process falls onto the conveyor belt, and the wind box is connected to the fan of the tobacco air separation mechanism, so that the wind delivered by the fan passes upward through the conveyor belt via the wind box and enters the tobacco air separation mechanism.

8. The tobacco wind selection device according to claim 7, characterized in that: The tobacco wind selection device further includes a motor and a processor, wherein the motor is configured to drive the shaft, and the processor is configured to control a rotation direction of the motor, thereby controlling a rotation direction of the conveyor belt.

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