Air duct winnowing device for separating tobacco shreds and tobacco powder
By designing a screenless air duct separation device, tobacco and dust are separated by material collision and gravity-wind force differences, which solves the problem of screen clogging, improves separation efficiency and reduces maintenance costs.
Patent Information
- Application Number
- CN202520043727.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2035-01-09
AI Technical Summary
In the existing tobacco industry, screens are prone to clogging when separating tobacco shreds and dust, leading to frequent maintenance and increased costs, and affecting the air separation effect.
The screenless air duct separation device uses a feed channel, a discharge chamber, baffles and arc-shaped baffles to separate tobacco and dust after collision, using the difference between gravity and wind force to achieve separation.
It achieves efficient separation of tobacco and dust, reduces maintenance frequency and manufacturing costs, and improves equipment reliability and separation efficiency.
Smart Images
Figure CN223465123U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a cigarette production technical field especially points to a kind of air duct air selection device for separating cut tobacco and tobacco dust. BACKGROUND
[0002] In the tobacco industry, the separation of dust and cut tobacco is not easy to achieve in the air selection equipment for screening cut tobacco and tobacco stem or the material dropping equipment for dropping material, because the physical characteristics of air selection, the suspension wind speed of lighter cut tobacco and lighter dust is similar, and the separation is difficult, generally using screen to separate, which needs to use screen structure to separate dust and fine particles in cut tobacco after separating cut tobacco and tobacco stem.
[0003] Because the screen hole is easily blocked by dust after separating dust and cut tobacco, it needs to be cleaned regularly, and the cleaning method is manual cleaning or using compressed air to spray, manual cleaning undoubtedly causes great trouble to production and increases maintenance cost, and the spraying method causes air pressure fluctuation, affects air selection effect and increases manufacturing cost, and it also needs regular maintenance, so the above schemes have great disadvantages. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at providing a kind of air duct air selection device for separating cut tobacco and tobacco dust to avoid using screen, reduce complex components and manufacturing cost, and reduce maintenance frequency.
[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme: an air duct air selection device for separating cut tobacco and tobacco dust, including a feed channel for connecting air duct, the bottom end of the feed channel is connected with a material dropping cavity, a stop block is arranged on the inner wall of one side of the top of the material dropping cavity, an arc-shaped baffle for guiding material to collide with the stop block is arranged between the bottom ends of the feed channel, the end of the arc-shaped baffle and the stop block have a gap for material to drop into the material dropping cavity, the gap forms a cut tobacco dropping port, and a shunt channel for containing dust gas flow to enter is connected above the cut tobacco dropping port.
[0006] Preferably, the feed channel is provided with an arc-shaped air duct wall, and the end of the arc-shaped air duct wall is connected with the arc-shaped baffle downward.
[0007] More preferably, the bottom end of the feed channel is provided with an adjustable air door, and the adjustable air door can adjust the size of the discharge port at the bottom end of the feed channel to change the material flow rate.
[0008] More preferably, the stop block is a conical stop block, and one of the inclined surfaces of the conical stop block is used for material collision.
[0009] More preferably, the bottom end of the material dropping cavity is provided with a discharge valve.
[0010] More preferably, one end of the shunt passage is arranged downwardly and connected with the fan.
[0011] Compared with the prior art, the material collision block guides the collision of the tobacco and the dust particles, so that the tobacco and the dust particles are loosened after the collision, the lighter dust is then drawn away with the gas, and the heavier tobacco can enter the tobacco dropping port and fall into the dropping cavity to realize the separation of the materials, so that the purpose of winnowing is achieved. The device does not need to be provided with a complex structure such as a screening net, the manufacturing cost is reduced, frequent maintenance is avoided, and the use reliability of the equipment is improved. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure in the embodiment.
[0013] In the drawings:
[0014] 1 - feed channel 2 - arc-shaped air duct wall 3 - shunt passage
[0015] 4 - adjustable air door 5 - arc-shaped baffle 6 - tobacco dropping port
[0016] 7 - block 8 - dropping cavity 9 - fan
[0017] 10 - unloading valve. DETAILED DESCRIPTION
[0018] In order to facilitate the understanding of those skilled in the art, the present application will be further described below in conjunction with the embodiments and the drawings. The content mentioned in the embodiments is not a limitation of the present application.
[0019] It should be noted that in the present application, unless otherwise specified and limited, the terms "installation", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the present application, unless otherwise specified and limited, the first feature "on" or "under" the second feature can include the direct contact between the first and second features, or it can include the contact between the first and second features through another feature between them.
[0020] As Figure 1As shown, the air duct air separation device for separating tobacco shreds and dusts comprises a feeding channel 1 for connecting the air duct, the bottom end of the feeding channel 1 is connected to a material dropping cavity 8, one side of the top of the material dropping cavity 8 is provided with a stop block 7, the bottom end of the feeding channel 1 is provided with an arc-shaped baffle 5 for guiding the material to collide with the stop block 7, the end of the arc-shaped baffle 5 and the stop block 7 have a gap for the material to drop into the material dropping cavity 8, the gap forms a tobacco shred dropping port 6, and the tobacco shred dropping port 6 is connected to a shunt channel 3 for the dust-containing airflow to enter.
[0021] In the above structure, the feeding channel 1 is provided with an arc-shaped air duct wall 2, the end of the arc-shaped air duct wall 2 is connected to the arc-shaped baffle 5 downward, which enables the material to flow along a relatively complete arc-shaped channel after entering the feeding channel 1, so as to improve the smoothness of the material flow before guiding the material to collide with the stop block 7. This structural design helps the uniform distribution of the material in the air duct, providing a basis for the subsequent air separation process. The cooperation of the stop block 7 and the arc-shaped baffle 5 can effectively guide the material to collide with the stop block, increase the contact area of the material with the stop block, and thus improve the separation effect of the material. This design helps to more accurately control the dropping direction of the material, reduces the splashing and scattering of the material. Moreover, the design of the arc-shaped air duct wall 2 enables the material to flow along the arc-shaped channel in the feeding channel 1, which reduces the friction between the material and the air duct wall and also reduces energy consumption.
[0022] The bottom end of the feeding channel 1 in the embodiment is also provided with an adjustable air door 4, which can adjust the size of the discharge port at the bottom end of the feeding channel 1, so as to adjust and change the flow rate of the material according to the required separation effect. Those skilled in the art should know that the adjustable air door 4 can be selected as a conventional valve plate structure, which is usually made of metal or plastic and has a basic structure including a plate that can move up and down, which is perpendicular or at an angle to the cross section of the air duct. By changing the relative position of the valve plate and the air duct, the opening area of the air duct can be adjusted to control the flow rate of the material and the air volume. One end of the valve plate is connected to an external control device through a connecting rod, gear or electric actuator driving mechanism, so that the operator can remotely or manually adjust the position of the valve plate according to the needs. This design allows precise control of the flow characteristics of the material to adapt to different separation effect requirements, while keeping the structure simple, easy to operate and low in maintenance cost.
[0023] The stop block 7 described above is a conical stop block, one of the inclined surfaces of the conical stop block is used for the material to collide. This design helps the material to be more effectively separated after collision, reducing the rebound and secondary mixing of the material.
[0024] In addition, the bottom end of the material dropping cavity 8 is provided with a discharge valve 10. One end of the shunt channel 3 is bent downward and connected to a fan 9, and the fan 9 is connected to subsequent dust removal pipelines and dust removal equipment to treat the dust-containing airflow before discharging.
[0025] The air duct air separation device for separating cut tobacco and tobacco dust provided by the above-mentioned embodiment works as follows: the airflow containing dust and cut tobacco material enters the feeding channel 1 from the cut tobacco conveying pipeline, then flows along the arc-shaped air duct wall 2 and the arc-shaped baffle 5, and collides against the stop block 7, at which time the cut tobacco and dust particles are loosened after the collision, so that the lighter dust can be drawn away with the gas, while the heavier cut tobacco can enter the cut tobacco drop opening 6 and fall into the drop cavity 8 to realize the separation of cut tobacco and dust, thereby achieving the purpose of air separation.
[0026] The principle of realizing air separation of the device lies in that when the material (cut tobacco and dust) passes through the feeding channel 1 and collides against the stop block 7, the material is dispersed and reoriented due to the shape and position design of the stop block. The collision and reorientation process makes the cut tobacco and dust, which are originally mixed together, begin to separate. The cut tobacco and dust are different in weight, with the cut tobacco being heavier and the dust being lighter. Under the action of the stop block 7, the heavier cut tobacco slides down along the inclined surface of the stop block due to the inertial effect, while the lighter dust is more easily blown up due to the air resistance and wind force. Since the arc-shaped baffle 5 and the cut tobacco drop opening 6 create specific airflow dynamics conditions, the heavier cut tobacco slides down along the arc-shaped baffle to the cut tobacco drop opening 6 due to the gravity, while the lighter dust is guided to different paths through the shunt channel 3. In addition, the design of the shunt channel 3 enables the dust-containing airflow to be guided to the fan 9 and then connected to the dust removal equipment. In this process, the dust is more easily captured by the wind force and moved with the airflow due to the light weight and large surface area, while the cut tobacco is not easily taken away by the wind force due to the heavy weight, thereby realizing the air separation.
[0027] The utility model discloses a kind of air duct air separation devices without screen, utilize the synergistic effect of feeding channel 1, drop cavity 8, stop block 7, arc-shaped baffle 5 and adjustable damper 4 structure, realize the effective separation of cut tobacco and dust, avoid the problem of screen easy to block and high maintenance cost simultaneously, improve separation efficiency, reduce energy consumption and manufacturing cost, enhance the adaptability and reliability of equipment.
[0028] In order to make the person skilled in the art more conveniently understand the improvement of the present utility model relative to the prior art, some drawings and descriptions of the present utility model have been simplified, and the above-mentioned embodiment is a preferred implementation scheme of the present utility model. In addition to this, the present utility model can also be implemented in other ways without departing from the concept of the present technical solution. Any obvious substitution within the scope of protection of the present utility model is within the scope of protection of the present utility model.
Claims
1. An air channel air separation device for separating tobacco shreds from tobacco dust, characterised in that: The application relates to a tobacco cutting device, which comprises a feeding channel (1) for connecting a wind channel, the bottom end of the feeding channel (1) is connected with a tobacco cutting cavity (8), the inner wall of one side of the top of the tobacco cutting cavity (8) is provided with a stop block (7), arc-shaped baffle plates (5) for guiding material to collide with the stop block (7) are arranged between the bottom ends of the feeding channel (1), the end of the arc-shaped baffle plate (5) is provided with a gap for the material to drop into the tobacco cutting cavity (8) between the arc-shaped baffle plate (5) and the stop block (7), the gap forms a tobacco cutting port (6), and a shunting channel (3) for allowing dust-containing airflow to enter is connected above the tobacco cutting port (6).
2. A wind channel air separation apparatus for separating tobacco shreds from tobacco strands according to claim 1, characterised in that: The feeding channel (1) is provided with arc-shaped wind channel walls (2), and the end of the arc-shaped wind channel walls (2) is connected with the arc-shaped baffle plates (5) downward.
3. A wind channel air separation apparatus for separating tobacco shreds from tobacco strands according to claim 2, characterised in that: The bottom end of the feeding channel (1) is provided with an adjustable air door (4), the adjustable air door (4) can adjust the size of the discharging port of the bottom end of the feeding channel (1) so as to change the material flow rate.
4. A wind channel air separation apparatus for separating tobacco shreds from tobacco strands according to claim 3, characterised in that: The stop block (7) is a conical stop block, one of the inclined surfaces of the conical stop block is used for allowing the material to collide.
5. A wind channel air separation device for separating tobacco shreds from tobacco strands according to claim 1, wherein: The bottom end of the tobacco cutting cavity (8) is provided with a discharging valve (10).
6. A wind channel air separation device for separating tobacco shreds from tobacco strands according to claim 1, wherein: One end of the shunting channel (3) is bent downward and connected with a fan (9).