CN112042997A - Energy-saving efficient threshing and air separating process and system - Google Patents
Energy-saving efficient threshing and air separating process and system Download PDFInfo
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- CN112042997A CN112042997A CN202010829191.8A CN202010829191A CN112042997A CN 112042997 A CN112042997 A CN 112042997A CN 202010829191 A CN202010829191 A CN 202010829191A CN 112042997 A CN112042997 A CN 112042997A
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/16—Classifying or aligning leaves
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B5/00—Stripping tobacco; Treatment of stems or ribs
- A24B5/06—Stripping tobacco; Treatment of stems or ribs by stripping leaf-parts from the stem
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Abstract
The invention discloses an energy-saving and efficient threshing and air separating process and system, which comprise four threshing machines of a first-stage threshing machine, a second-stage threshing machine, a third-stage threshing machine and a fourth-stage threshing machine, and seven air separating machines of a first air separating machine, a second air separating machine, a third air separating machine, a fourth air separating machine, a fifth air separating machine, a sixth air separating machine and a seventh air separating machine, wherein a first-stage threshing discharge material is connected to a first air separating inlet, the first air separating machine, the second air separating machine and the third air separating machine are sequentially connected in series, and the third air separating machine is connected to the second-stage threshing machine; the second-stage threshing outlet is connected to a fourth air branch, the fourth air branch is connected with a fifth air branch in series, and the fifth air branch is connected to the third-stage threshing; the third-stage threshing discharge is connected to a sixth air branch, and the sixth air branch is connected to a fourth-stage threshing; and (4) connecting the four-stage threshing discharge to the seven-wind separation, separating the tobacco stems from the tobacco stem outlet materials of the seven-wind separation, returning the tobacco stems with the leaf stems and the tobacco flakes to the seven-wind separation, and performing the wind separation again. According to the invention, four threshing machines and seven air distribution machines are arranged for threshing and sorting, so that the tobacco leaf crushing rate can be greatly reduced while the air separation efficiency is ensured, and the equipment cost and the operation energy consumption are greatly reduced.
Description
Technical Field
The invention relates to the technical field of tobacco production and processing, in particular to an energy-saving and efficient threshing and air separating process and system.
Background
In the threshing and redrying production technology, the problems of improving the threshing and air separating efficiency, reducing the tobacco leaf breaking consumption, reducing the production energy consumption and the like in the threshing and air separating process are always the center of gravity of innovation work, and the threshing and air separating process mainly has the following problems:
1) the air separation efficiency is low. The traditional air separation machine in the threshing and redrying industry has low air separation efficiency, namely the total amount of free blades separated by a single air separation machine is less, so that the threshing and redrying industry generally uses the equipment layout from an eleven-grade air separation machine of a four-grade threshing machine to an eighteen-grade air separation machine of a five-grade threshing machine to complete stem and leaf separation work, one to eight air separation machines are connected behind each-grade threshing machine in series, and the leaf and stem are separated as much as possible in multiple air separation modes by adopting flexible threshing and multi-grade air separation modes.
Because the wind separation efficiency of a single wind separation machine is low, free blades separated by a plurality of wind separation machines in front of the second-stage threshing machine account for 85-90% of the total amount, and 10-15% of the free blades are not separated, and are repeatedly processed in the second-stage threshing machine, so that the area of the free blades is reduced; meanwhile, part of tobacco leaves are crushed into smaller leaves with lower utilization value, namely a large amount of tobacco leaves are crushed.
2) The tobacco leaf is broken more. The threshing and redrying air-separating machine generally adopts two modes of mechanical material throwing and high-speed belt material throwing as a feeding structure, in the mechanical material throwing structure air-separating machine, a rotating material throwing roller throws tobacco leaves into an air-separating bin, and the tobacco leaves are collided, extruded and rubbed by a high-speed mechanical rotating structure to generate more tobacco leaves for crushing; in the high-speed belt material throwing air separation machine, tobacco leaves are spread by a conveying belt which runs at a high speed, the tobacco leaves are thrown into an air separation bin, part of materials are tightly pressed on the conveying belt by the air above and cannot be thrown out, a belt returning material is formed, and a large amount of tobacco leaves are produced in the contact friction with a scraper of the conveying belt to make the tobacco leaves broken. On the other hand, the blanking device that uses with the air extension cooperation at present adopts mechanical cross door air lock structure more, and the separation of gas material and the ejection of compact of free blade are accomplished to rotatory cross door. In the process, the tobacco leaves are also collided, extruded and rubbed by the mechanical rotating structure, and more tobacco leaves are produced and crushed.
3) The energy consumption of the equipment is high. The bottom material carrying structures in the air separation machine bin for threshing and redrying are both double-layer circulating chain plate structures, air separation air quantity can be added into the air separation bin after passing through the double-layer circulating chain plate structures from an air inlet pipeline, and wind power generated by a fan needs to pass through a screen drum of a blanking device besides the double-layer circulating chain plate structures in the circulating process. The aperture ratio of the screen cylinder and the chain plate is lower, only about 30 percent, and the resistance to wind is larger, so that the resistance to the circulating wind in the operation process is larger, part of work done by the fan is only used for overcoming the resistance, and the energy consumption of the equipment is increased.
Disclosure of Invention
Aiming at the problems in the background art, the invention provides an energy-saving and efficient threshing and air separation process and system, wherein four threshing machines and seven air separation machines are arranged for threshing and separating, so that the tobacco leaf crushing rate can be greatly reduced while the air separation efficiency is ensured, and compared with the traditional four threshing and eleven separation process, four air separation machines are reduced, the equipment cost and the running energy consumption are greatly reduced, the equipment floor area is reduced, and the plant land and the construction cost are saved.
In order to achieve the purpose, the invention adopts the following technical scheme: the energy-saving efficient threshing and air separating process and the system comprise four threshing machines of a first-stage threshing machine, a second-stage threshing machine, a third-stage threshing machine and a fourth-stage threshing machine, and seven air separating machines of a first air separating machine, a second air separating machine, a third air separating machine, a fourth air separating machine, a fifth air separating machine, a sixth air separating machine and a seventh air separating machine, wherein the first-stage threshing discharge is connected to a first air separating inlet, the first air separating machine, the second air separating machine and the third air separating machine are sequentially connected in series, and the third air separating machine is connected to the second-stage threshing machine; the second-stage threshing outlet is connected to a fourth air branch, the fourth air branch is connected with a fifth air branch in series, and the fifth air branch is connected to the third-stage threshing; the third-stage threshing discharge is connected to a sixth air branch, and the sixth air branch is connected to a fourth-stage threshing; and (3) connecting the four-stage threshing discharge to a seven-wind separator, separating the tobacco stems from the tobacco stem outlet materials of the seven-wind separator, returning the tobacco stems with the leaf stems and tobacco flakes to the seven-wind separator for secondary wind separation, and discharging the light stems to enter the subsequent process.
Preferably, the materials sent to the second-stage threshing by the third wind are firstly subjected to fragment screening, the screened fragments are collected, qualified fragments enter the second-stage threshing, the materials sent to the third-stage threshing by the fifth wind are firstly subjected to tobacco stem screening and fragment screening, the screened stems with leaves enter the third-stage threshing, the screened stems with leaves are gathered, and the screened fragments are collected in a centralized manner; the materials which are distributed to the fourth-stage threshing by the sixth air are firstly subjected to tobacco stem screening and fragment screening, the screened stems with leaves enter the fourth-stage threshing, the screened stems with leaves are gathered, and the screened fragments are collected in a centralized manner.
Preferably, the tobacco stems are sorted by the five-wind and six-wind separated light stems and the seven-wind separated tobacco stem outlet materials together, the tobacco stems with the leaf stems and the tobacco flakes are returned to the seven-wind separated light stems for secondary wind separation, and the light stems are discharged to enter the subsequent process.
Preferably, the first air separation, the second air separation, the third air separation, the fourth air separation, the fifth air separation, the sixth air separation and the seventh air separation all comprise a shell, a blade outlet at the top, a tobacco stem outlet at the bottom, an air distribution air inlet channel and an inclined net at the top of the outlet end of the air distribution air inlet channel, a feed opening is formed in the shell at the lower side of the blade outlet, a first throwing plate is arranged on the shell at the lower side opposite to the feed opening, a second throwing plate is arranged on the shell at the lower side opposite to the first throwing plate, the top surfaces of the first throwing plate and the second throwing plate are both arc-shaped, a first throwing nozzle and a second throwing nozzle are respectively arranged at the upper sides of the first throwing plate and the second throwing plate, and the air injection directions of the first throwing nozzle and the second throwing nozzle are tangent to the upper ends of the first throwing plate and the second throwing.
Preferably, the first material throwing nozzle and the second material throwing nozzle are controlled by electromagnetic valves to perform pulse type blowing.
Preferably, the feeding port is provided with a high-speed belt for feeding.
As the preferred, the inclined net comprises a plurality of net plates side by side, air vents are evenly formed in each net plate, rotating shafts are arranged on short edges of two sides of each net plate through ear plates, the rotating shafts are movably mounted on shells on two sides through bearings, balancing weights are arranged on the lower sides of the net plates, positioning blocks are arranged on the shells on the upper sides of the net plates, and limiting blocks are arranged on the shells on the lower sides of the net plates.
Preferably, the balancing weight is installed at the lower side of the ear plates at both sides of the net plate.
Preferably, the balancing weight is a square block, a rectangular notch is formed in the upper portion of the balancing weight to form a vertical positioning surface, a front-back positioning surface and a left-right positioning surface, and permanent magnets are embedded and mounted on the vertical positioning surface, the front-back positioning surface and the left-right positioning surface.
Preferably, the shell on both sides of the inclined net is provided with an access door.
The invention has the beneficial effects that:
according to the invention, four threshing machines and seven air distribution machines are arranged for threshing and sorting, so that the tobacco leaf crushing rate can be greatly reduced while the air separation efficiency is ensured, and compared with the traditional four threshing and eleven distribution process, four air distribution machines are reduced, the equipment cost and the operation energy consumption are greatly reduced, the equipment floor area is reduced, and the plant land and the construction cost are saved.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Fig. 2 is a schematic structural diagram of the air distribution fan of the present invention.
FIG. 3 is a side view of a sub-fan of the present invention.
Fig. 4 is a top view of the bias net of the present invention.
Fig. 5 is a bottom view of the inclined net of the present invention.
Fig. 6 is a schematic side view of the inclined wire of the present invention in normal operation.
FIG. 7 is a schematic view showing the turning of the screen plate after the inclined screen part of the present invention is clogged.
FIG. 8 is a schematic view of the mesh plate and the weight member of the present invention.
Fig. 9 is a perspective view of the weight member of the present invention.
In the figure: the device comprises a shell 1, a feeding port 2, a blade outlet 3, a tobacco stem outlet 4, an air distribution air inlet duct 6, a high-speed belt 7, a first material throwing plate 8, a first material throwing nozzle 9, a second material throwing plate 10, a second material throwing nozzle 11, a screen plate 12, an air vent 13, an ear plate 14, a rotating shaft 15, a balancing weight 16, a bearing 17, a positioning block 18, a limiting block 19, a front and back positioning surface 20, a vertical positioning surface 21, a left and right positioning surface 22, a permanent magnet 23 and an access door 24.
Detailed Description
In order to make the technical solution and advantages of the present invention more apparent, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings for the convenience of the skilled person.
As shown in fig. 1 to 3, the energy-saving efficient threshing air separation process and system comprises four threshing machines of a first-stage threshing, a second-stage threshing, a third-stage threshing and a fourth-stage threshing, and seven air separation machines of a first air separation machine, a second air separation machine, a third air separation machine, a fourth air separation machine, a fifth air separation machine, a sixth air separation machine and a seventh air separation machine, wherein the first-stage threshing discharge is connected to a first air separation inlet, the first air separation machine, the second air separation machine and the third air separation machine are sequentially connected in series, and the third air separation machine is connected to the second-stage threshing; the second-stage threshing outlet is connected to a fourth air branch, the fourth air branch is connected with a fifth air branch in series, and the fifth air branch is connected to the third-stage threshing; the third-stage threshing discharge is connected to a sixth air branch, and the sixth air branch is connected to a fourth-stage threshing; and (3) connecting the four-stage threshing discharge to a seven-wind separator, separating the tobacco stems from the tobacco stem outlet materials of the seven-wind separator, returning the tobacco stems with the leaf stems and tobacco flakes to the seven-wind separator for secondary wind separation, and discharging the light stems to enter the subsequent process. The first air separation, the second air separation, the third air separation, the fourth air separation, the fifth air separation, the sixth air separation and the seventh air separation all comprise a shell 1, a blade outlet 3 at the top, a tobacco stem outlet 4 at the bottom, an air distribution air inlet duct 6 and an inclined net 5 at the top of the outlet end of the air distribution air inlet duct 6, a feed opening 2 is formed in the shell 1 on the lower side of the blade outlet 3, a high-speed belt 7 is arranged on the feed opening 2 for feeding, a first throwing plate 8 is arranged on the shell 1 on the lower side opposite to the feed opening 2, a second throwing plate 10 is arranged on the shell 1 on the lower side opposite to the first throwing plate 8, the top surfaces of the first throwing plate 8 and the second throwing plate 10 are both arc-shaped, a first throwing nozzle 9 and a second throwing nozzle 11 are respectively arranged on the upper sides of the first throwing plate 8 and the second throwing plate 10, and the air injection directions of the first throwing nozzle 9 and the second throwing nozzle 11 are tangent to the upper ends of the first throwing plate 8. During production, the air separation machine feeds materials from the feeding port 2 through the high-speed belt 7, positive pressure air provided by the air inlet duct 6 forms a main air field of air separation on the shell 1, the fed materials are separated, lighter blades are discharged through the blade outlet 3 at the top, heavier tobacco stems, tobacco stems with leaves and partial tobacco flakes fall on the inclined net 5 and are discharged through the tobacco stem outlet 4 at the bottom, and the next step of treatment is carried out. The material thrown from the feeding port 2 and close to the side wall of the shell 1 has less winnowing effect in a main wind field, at the moment, the material is blown through the first throwing nozzle 9, the side material is thrown to the main wind field in the middle along the curve of the first throwing plate 8, the material falling on one side of the second throwing plate 10 is blown by the second throwing plate 10, and the material is thrown to the main wind field in the middle along the curve of the second throwing plate 10, so that the material is fully and uniformly loosened, most qualified tobacco flakes can be selected by the main wind field, the tobacco flake sorting efficiency is greatly improved, the situation that the qualified tobacco flakes are broken due to entering the threshing machine again is reduced, and the crushing rate is reduced. The first material throwing nozzle 9 and the second material throwing nozzle 11 are controlled by the electromagnetic valve to carry out pulse type spraying, the spraying and blowing period of the first material throwing nozzle 9 and the second material throwing nozzle 11 and the single spraying time can be adjusted according to the practical situation during production, the purpose is to reduce the influence of the spraying and blowing of the first material throwing nozzle 9 and the second material throwing nozzle 11 on a main wind field, and the wind separation efficiency of the main wind field is ensured. Meanwhile, the materials sent to the second-stage threshing by the third wind are firstly subjected to fragment screening, the screened fragments are collected, qualified fragments enter the second-stage threshing, the materials sent to the third-stage threshing by the fifth wind are firstly subjected to tobacco stem screening and fragment screening, the screened stems with leaves enter the third-stage threshing, the screened stems with leaves are gathered, and the screened fragments are collected in a centralized manner; the materials which are distributed to the fourth-stage threshing by the sixth air are firstly subjected to tobacco stem screening and fragment screening, the screened stems with leaves enter the fourth-stage threshing, the screened stems with leaves are gathered, and the screened fragments are collected in a centralized manner. Through the screening process, the broken tobacco and the stems with leaves are effectively separated by the smooth stems, and the broken tobacco is collected, so that the situation that the broken tobacco enters the threshing machine again to increase the breakage is avoided; the leaf stalk enters the threshing part again for threshing, and leaves are fully threshed; and the smooth stems and the seven-wind-separated tobacco stem outlet materials are subjected to tobacco stem separation together, the tobacco stems with the leaf stems and the tobacco flakes are returned to the seven-wind-separated tobacco stem separation for secondary wind separation, the tobacco flakes contained in the tobacco stems are fully separated, the smooth stems are discharged to enter the subsequent process, and the winnowing efficiency is improved.
Furthermore, the inclined net 5 is composed of a plurality of net plates 12 in parallel, and each net plate 12 is uniformly provided with vent holes 13 for air to enter the air distribution air inlet duct 6. The short edges of both sides of the screen plate 12 are provided with rotating shafts 15 through ear plates 14, and the rotating shafts 15 are movably arranged on the shells 1 at both sides through bearings 17, so that each screen plate 12 can rotate around itself. The lower side of the screen plate 12 is provided with a balancing weight 16, and the upper side of the screen plate 12 and the shell 1 are provided with a positioning block 18. The balancing weight 16 can apply downward gravity to the screen plate 12 on the left side, so that the screen plate 12 rotates clockwise, and the positioning block 18 can position the screen plate 12, so that the screen plate 12 keeps a required inclined state, and the guide effect on falling materials is realized. And when the air vent 13 takes place to block up on otter board 12, divide wind inlet duct 6 to go up the air-out and be cut off, form strong wind pressure in the inclined wire netting 5 downside, when the wind pressure can overcome the gravity of balancing weight 16, otter board 12 anticlockwise rotation for form the air-out clearance between each otter board 12, can blow off the material that piles up on the air vent 13, and the shell 1 of downside is provided with stopper 19, can avoid otter board 12 at the excessive rotation of anticlockwise. After the ventilation holes 13 are restored to be smooth and the wind pressure at the lower side is restored to be normal, the screen plate 12 is restored to be in an inclined state under the action of the balancing weight 16, and the air separation and material guiding work is continued. Can clear up by oneself and need not drop into extra energy consumption when taking place to block up, further reduce the equipment energy consumption, reduce the equipment and block up the condition, ensure the efficiency of selection by winnowing.
Specifically, the weight block 16 is installed on the lower side of the ear plate 14 on both sides of the mesh plate 12, the weight block 16 is a square block, the upper portion of the square block is provided with a rectangular notch to form a vertical direction positioning surface 21, a front-back direction positioning surface 20 and a left-right direction positioning surface 22, and permanent magnets 23 are embedded and installed on the vertical direction positioning surface 21, the front-back direction positioning surface 20 and the left-right direction positioning surface 22. The balancing weight 16 is installed on the otic placode 14 through the mode of magnetism, and the installation is convenient with the dismantlement to, the accurate card is ensured the mounted position on the low side edge of otic placode 14 when the setting of vertical direction locating surface 21, fore-and-aft direction locating surface 20 and left-right direction locating surface 22 is can the installation, and stability and accuracy when guarantee inclined wire netting 5 operation, and do not influence the main wind field air inlet. Meanwhile, the shell 1 on two sides of the inclined net 5 is provided with an access door 24, which is convenient for replacing the balancing weight 16 or other maintenance work.
According to the invention, four threshing machines and seven air distribution machines are arranged for threshing and sorting, so that the tobacco leaf crushing rate can be greatly reduced while the air separation efficiency is ensured, and compared with the traditional four threshing and eleven distribution process, four air distribution machines are reduced, the equipment cost and the operation energy consumption are greatly reduced, the equipment floor area is reduced, and the plant land and the construction cost are saved.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (10)
1. An energy-saving and efficient threshing and air separating process and a system are characterized in that: the device comprises four threshing machines of a first-stage threshing machine, a second-stage threshing machine, a third-stage threshing machine and a fourth-stage threshing machine, and seven wind separating machines of a first wind separating machine, a second wind separating machine, a third wind separating machine, a fourth wind separating machine, a fifth wind separating machine, a sixth wind separating machine and a seventh wind separating machine, wherein a first-stage threshing discharge material is connected to a first wind separating inlet, the first wind separating machine, the second wind separating machine and the third wind separating machine are sequentially connected in series, and the third wind separating machine is connected to the second-stage threshing machine; the second-stage threshing outlet is connected to a fourth air branch, the fourth air branch is connected with a fifth air branch in series, and the fifth air branch is connected to the third-stage threshing; the third-stage threshing discharge is connected to a sixth air branch, and the sixth air branch is connected to a fourth-stage threshing; and (3) connecting the four-stage threshing discharge to a seven-wind separator, separating the tobacco stems from the tobacco stem outlet materials of the seven-wind separator, returning the tobacco stems with the leaf stems and tobacco flakes to the seven-wind separator for secondary wind separation, and discharging the light stems to enter the subsequent process.
2. The energy-saving high-efficiency threshing and air separating process and system as claimed in claim 1, wherein: the material which is sent to the second-stage threshing by the third wind is firstly subjected to fragment screening, the screened fragments are collected, the qualified fragments enter the second-stage threshing, the material which is sent to the third-stage threshing by the fifth wind is firstly subjected to tobacco stem screening and fragment screening, the screened stems with leaves enter the third-stage threshing, the screened stems with leaves are gathered, and the screened fragments are collected in a centralized manner; the materials which are distributed to the fourth-stage threshing by the sixth air are firstly subjected to tobacco stem screening and fragment screening, the screened stems with leaves enter the fourth-stage threshing, the screened stems with leaves are gathered, and the screened fragments are collected in a centralized manner.
3. An energy-saving efficient threshing and air separating process and system as claimed in claim 2, wherein: and (4) sorting tobacco stems by using the five-wind and six-wind separated light stems and seven-wind separated tobacco stem outlet materials together, returning the tobacco stems with leaf stems and tobacco flakes to the seven-wind separated air again, and discharging the light stems to enter a subsequent process.
4. An energy-saving efficient threshing and air separating process and system as claimed in claim 1, 2 or 3, characterized in that: the first air branch, the second air branch, the third air branch, the fourth air branch, the fifth air branch, the sixth air branch and the seventh air branch respectively comprise a shell (1), a blade outlet (3) at the top, a tobacco stem outlet (4) at the bottom, an air distribution air inlet duct (6) and an inclined net (5) at the top of the outlet end of the air distribution air inlet duct (6), a feed opening (2) is formed in a shell (1) on the lower side of a blade outlet (3), a first throwing plate (8) is arranged on the shell (1) on the lower side opposite to the feed opening (2), a second throwing plate (10) is arranged on the shell (1) on the lower side opposite to the first throwing plate (8), the top surfaces of the first throwing plate (8) and the second throwing plate (10) are both arc-shaped, a first throwing nozzle (9) and a second throwing nozzle (11) are respectively arranged on the upper sides of the first throwing plate (8) and the second throwing plate (10), and the air injection directions of the first throwing nozzle (9) and the second throwing nozzle (11) are tangent to the upper ends of the first throwing plate (8) and the second throwing plate (10).
5. An energy-saving efficient threshing and air separation process and system as claimed in claim 4, wherein: the first material throwing nozzle (9) and the second material throwing nozzle (11) are controlled by electromagnetic valves to carry out pulse type blowing.
6. An energy-saving efficient threshing and air separating process and system as claimed in claim 5, wherein: the feeding port (2) is provided with a high-speed belt (7) for feeding.
7. An energy-saving efficient threshing and air separating process and system as claimed in claim 5 or 6, wherein: oblique net (5) are by polylith otter board (12) constitution side by side, evenly set up air vent (13) on every otter board (12), all set up pivot (15) through otic placode (14) on otter board (12) both sides short side, pivot (15) pass through bearing (17) movable mounting on both sides shell (1), set up balancing weight (16) on otter board (12) low side, otter board (12) upside gets shell (1) and is provided with locating piece (18), shell (1) of otter board (12) downside is provided with stopper (19).
8. An energy-saving efficient threshing and air separating process and system as claimed in claim 7, wherein: the balancing weight (16) is arranged at the lower side of the ear plates (14) at the two sides of the mesh plate (12).
9. An energy-saving efficient threshing and air separating process and system as claimed in claim 8, wherein: the balancing weight (16) is a square block, a rectangular notch is formed in the upper portion of the balancing weight to form a vertical direction positioning face (21), a front and back direction positioning face (20) and a left and right direction positioning face (22), and permanent magnets (23) are embedded and mounted on the vertical direction positioning face (21), the front and back direction positioning face (20) and the left and right direction positioning face (22).
10. An energy-saving efficient threshing and air separating process and system as claimed in claim 9, wherein: the shell (1) at the two sides of the inclined net (5) is provided with an access door (24).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112890266A (en) * | 2021-04-08 | 2021-06-04 | 河南中烟工业有限责任公司 | Method for winnowing and quality improvement of threshing and redrying online tobacco lamina |
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