Threshing and redrying on-line impurity removing and selecting production line
By introducing a branch line of a large-sheet screening machine, a hemp silk remover and an electrostatic impurity remover into the leaf threshing and redrying production line, the problem of tobacco leaf loss during air separation and impurity removal was solved, and more efficient impurity removal and production efficiency were achieved.
Patent Information
- Application Number
- CN202422556030.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-10-22
AI Technical Summary
In the process of air separation and impurity removal in the existing leaf threshing and redrying production line, it is difficult to effectively separate light impurities when the air separation frequency is low, and it is easy to separate the tobacco leaves when the frequency is high, resulting in low impurity removal efficiency and large tobacco leaf losses.
A de-impurity and sorting production line is designed, which includes a main production line and a branch line. The main production line includes a first leaf moistening machine, a rotary roller de-impurity device, an air separation device and a second leaf moistening machine. The branch line includes a large-sheet screening machine, a hemp fiber remover and an electrostatic de-impurity machine. The de-impurity efficiency is improved by the combined use of these devices.
By setting up branch line equipment, the air separation frequency of air separation and impurity removal is increased, the impurity removal effect and overall production efficiency of the production line are enhanced, and tobacco leaf losses are reduced.
Smart Images
Figure CN223391968U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a raw tobacco leaf production line, in particular to a leaf threshing and redrying online impurity removal and selection production line. Background Art
[0002] Impurities in finished tobacco strips originate from various stages of the tobacco industry, including tobacco cultivation, primary curing, transportation, and production. Tobacco impurity removal processes are primarily located in the threshing and redrying stages and at the front end of the tobacco production process. As the first stage of industrial processing, threshing and redrying plays a crucial role in the quality of tobacco raw materials. With the increasing sophistication of cigarette production, the quality of tobacco raw materials has become increasingly important, particularly the content of impurities in tobacco raw materials, which directly impacts the formulation and brand stability of cigarettes. The impurity content of finished tobacco strips, as a key indicator of the homogenization level of threshing and redrying, is a crucial factor in determining the quality of the finished product.
[0003] Current methods for removing impurities vary, including rollers for removing heavy debris like sand and gravel, air separation for removing lightweight debris like feathers, plastic fibers, hemp, and hemp wool, photoelectric and electrostatic methods. Air separation is a common device used in leaf threshing and reheating lines. Air separation works by separating lightweight debris from the smoke stream using the wind speed across the screen, but this inevitably involves removing some leaves.
[0004] At present, there is a problem with the use of air separation to remove impurities. When the air separation frequency is low, light impurities cannot be separated. When the air separation frequency is high, more leaves are separated, increasing the amount of selection. This is a common problem in the air separation of leaf threshing and redrying production lines. Utility Model Content
[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an online impurity removal and sorting production line for threshing and redrying leaves, so as to solve the problems in the prior art.
[0006] To achieve the above-mentioned purpose and other related purposes, the present invention is implemented through the following technical solutions.
[0007] The present invention provides a leaf threshing and redrying online impurity removal and sorting production line, which is characterized by comprising a main production line and a branch line for further separating and processing impurities in the impurity removal link of the main production line;
[0008] The main production line includes a first leaf moistening machine, a rotary roller impurity removal device, an air separation device and a second leaf moistening machine, which are connected in sequence;
[0009] The branch line includes a large-scale screening machine, a hemp fiber removing machine and an electrostatic impurity remover, which are connected in sequence;
[0010] The feed end of the large-scale screening machine is connected to the debris discharge end of the rotary roller impurity removal device and / or the debris discharge end of the air separation device;
[0011] The large tobacco leaf discharging end of the large leaf screening machine is connected to the feeding end of the second leaf moistening machine;
[0012] The screening end of the large piece screening machine is communicated with the feeding end of the hemp fiber removing machine.
[0013] In one embodiment, the production line further comprises a leaf thresher, which is arranged downstream of the second leaf moistening machine and the electrostatic impurity remover.
[0014] In one embodiment, the discharge end of the air separation device and the feed end of the second leaf moistening machine are connected by a first tobacco leaf conveyor belt. In a more preferred embodiment, the first tobacco leaf conveyor belt is open to facilitate further manual screening and separation of impurities.
[0015] In one embodiment, the screening aperture of the large-scale screening machine is 20-30 mm, such as 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm or 30 mm.
[0016] In one embodiment, the second leaf moistening machine further includes a quantitative feeder and a leaf moistening machine in sequence.
[0017] In one embodiment, the lint remover is a sticky roller lint remover.
[0018] In one embodiment, the large-scale screening machine is a vibrating screening machine.
[0019] In one embodiment, the tobacco leaf discharge end of the electrostatic impurity remover is connected to the leaf beater via a second open tobacco leaf conveyor belt.
[0020] As described above, the online impurity removal and selection production line for leaf threshing and re-drying of the present invention has the following beneficial effects: in this application, by setting up a branch line including a large-scale screening machine, a hemp fiber remover and an electrostatic impurity remover, the frequency of air separation and impurity removal is greatly improved, thereby improving the overall production and impurity removal efficiency of the leaf threshing and re-drying line on the production line. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It shows the structural diagram of the leaf threshing and redrying online impurity removal and sorting production line of the utility model.
[0022] Figure 1 The following are the descriptions of the accompanying drawings:
[0023] 1 Main production line
[0024] 11. First Leaf Moisturizing Machine
[0025] 12 Rotating roller impurity removal device
[0026] 13. Air separation device
[0027] 14. Second Leaf Moisturizing Machine
[0028] 15 Leaf thresher
[0029] 2 branch lines
[0030] 21 Large Flake Screening Machine
[0031] 22 Flax Removal Machine
[0032] 23. Electrostatic impurity remover DETAILED DESCRIPTION
[0033] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.
[0034] See also Figure 1 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of this utility model. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by this utility model without affecting the efficacy and purpose that can be achieved by this utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of this utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of this utility model without substantially changing the technical content.
[0035] like Figure 1 As shown, the utility model provides a leaf threshing and redrying online impurity removal and sorting production line, comprising a main production line 1 and a branch line 2 for further separating and processing impurities in the impurity removal link of the main production line 1;
[0036] The main production line 1 includes a first leaf moistening machine 11, a rotary roller impurity removal device 12, an air separation device 13 and a second leaf moistening machine 14, which are connected in sequence.
[0037] The branch line 2 includes a large-scale screening machine 21, a lint remover 22 and an electrostatic impurity remover 23, which are connected in sequence;
[0038] The feed end of the large flake screening machine 21 is connected to the debris discharge end of the rotary roller impurity removal device 12 and / or the debris discharge end of the air separation device 13;
[0039] The large tobacco leaf discharging end of the large leaf screening machine 21 is connected to the feeding end of the second leaf moistening machine 14;
[0040] The screening end of the large flake screening machine 21 is communicated with the feeding end of the hemp fiber removing machine 22 .
[0041] Leaf moistening is an important step in the leaf threshing and redrying process. The main function of the leaf moistening machine is to increase the temperature and moisture of the tobacco leaves in order to provide suitable tobacco leaves for the leaf threshing machine. The leaf moistening process of the production line in this application includes two moistening processes: the first moistening and the second moistening. The tobacco leaves after the first moistening will experience a longer process residence time, which is conducive to the absorption and penetration of moisture; the process residence time between the second moistening and the printer is shorter, which is conducive to the maintenance of moisture and temperature. The specific process parameters of the first and second moistening processes can be considered based on the raw materials, goals, effects, quality, costs, etc. of the leaf threshing and redrying.
[0042] The rotary roller impurity removal device is a device that removes heavy debris through physical separation. The rotary roller impurity removal device allows heavy debris such as gravel in the tobacco leaves to fall through the gaps between the rollers, while the tobacco leaves continue to be transported forward. However, when the processing volume is large, it is inevitable that some tobacco leaves will fall, resulting in waste of the target tobacco leaves. In this application, by setting up a branch line, while increasing the processing volume or efficiency of the main line, the fallen tobacco leaves are further sorted, which is conducive to all the target tobacco leaves entering the leaf threshing process.
[0043] The wind separator uses wind to separate light and heavy materials. Light debris such as feathers, hemp, and plastic are carried away by the wind, while tobacco leaves fall by their own weight. However, when the processing volume is large or the processing efficiency is high, a high frequency of wind flow is required, which inevitably causes some leaves to be separated. In this application, by setting up a branch line, the leaves separated by the wind separator are further processed and sorted, which helps all the target tobacco leaves enter the leaf threshing process.
[0044] The electrostatic impurity remover is a device that uses the principle of electrostatic adsorption to remove impurities from tobacco leaves.
[0045] In one embodiment, the production line further comprises a thresher 15, which is located downstream of the second moistening machine 14 and the electrostatic impurity remover 23. The thresher is used to separate the tobacco leaves from the stems. There are two types of threshers: vertical and horizontal.
[0046] In one embodiment, the discharge end of the air separation device 13 and the feed end of the second leaf moistening machine 14 are connected by a first tobacco leaf conveyor belt. In a more preferred embodiment, the first tobacco leaf conveyor belt is open to facilitate further manual screening and separation of impurities.
[0047] In one embodiment, the screening aperture of the large tobacco leaf screening machine 21 is 20-30 mm. For example, it can be 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, or 30 mm. The large tobacco leaves left by the large tobacco leaf screening machine 21 are further fed into the second leaf moistening machine. The sieved leaves are then fed into the hemp fiber removal machine to remove hemp fiber impurities, and then into the electrostatic impurity removal machine to further remove impurities through electrostatic discharge.
[0048] In one embodiment, the second leaf moistening machine 14 further includes a quantitative feeder and a leaf moistening machine in sequence.
[0049] In one embodiment, the hemp fiber remover 22 is a sticky roller hemp fiber remover. This device is used to remove lightweight debris, such as hemp rope, sack fibers, and plastic rope, from tobacco leaves. The sticky roller hemp fiber remover utilizes a set of spaced rollers. As tobacco leaves pass through these rollers, lightweight debris adheres to or entangles on the roller surfaces, thereby removing hemp fiber debris from the tobacco leaves.
[0050] In one embodiment, the large flake screening machine 21 is a vibrating screening machine.
[0051] In one embodiment, the tobacco leaf discharge end of the electrostatic impurity remover 23 is connected to the leaf beater 15 via a second open tobacco leaf conveyor belt.
[0052] The material connectivity in this application can be achieved by setting up an open or closed tobacco conveyor belt or conveyor channel.
[0053] If the large-scale screening machine, hemp silk remover and electrostatic impurity remover are not installed in the branch line, directly sorting the tobacco leaves and impurities in the rotary roller impurity removal device and the air separation device before entering the threshing process will bring a large amount of sorting workload and cannot meet the production efficiency requirements of the main production line.
[0054] The adoption of the above-mentioned technical solution in this application can greatly improve the frequency of air separation and impurity removal while ensuring quality, thereby improving the overall production and impurity removal efficiency of the leaf beating and re-drying line on the production line.
[0055] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.
Claims
1. A leaf threshing and redrying online impurity removal and sorting production line, characterized in that: It includes a main production line and a branch line for further separating and processing the impurities in the impurity removal process of the main production line to obtain the impurities for the leaf threshing process; The main production line includes a first leaf moistening machine, a rotary roller impurity removal device, an air separation device and a second leaf moistening machine, which are connected in sequence; The branch line includes a large-scale screening machine, a hemp fiber removing machine and an electrostatic impurity remover, which are connected in sequence; The feed end of the large-scale screening machine is connected to the debris discharge end of the rotary roller impurity removal device and / or the debris discharge end of the air separation device; The large tobacco leaf discharging end of the large leaf screening machine is connected to the feeding end of the second leaf moistening machine; The screening end of the large piece screening machine is communicated with the feeding end of the hemp fiber removing machine.
2. The production line according to claim 1, characterized in that: The production line further comprises a leaf thresher, which is arranged downstream of the second leaf moistening machine and the electrostatic impurity remover.
3. The production line according to claim 1, characterized in that: The discharge end of the air separation device and the feed end of the second leaf moistening machine are connected by a first open tobacco leaf conveyor belt.
4. The production line according to claim 1, characterized in that: The screening aperture of the large-scale screening machine is 20 to 30 mm.
5. The production line according to claim 1, characterized in that: The second leaf moistening machine further comprises a quantitative feeder and a leaf moistening machine in sequence.
6. The production line according to claim 1, characterized in that: The hemp fiber removing machine is a sticky roller hemp fiber remover.
7. The production line according to claim 1, characterized in that: The large piece screening machine is a vibrating screening machine.
8. The production line according to claim 2, characterized in that: The tobacco leaf discharging end of the electrostatic impurity remover is connected to the leaf beater through a second open tobacco leaf conveyor belt material.