Novel winnowing machine

Abstract

The utility model discloses a novel winnowing machine, which relates to the technical field of winnowing equipment and comprises a machine frame, a feeding conveying mechanism, a separation drum separation chamber and a settling chamber which are arranged on the machine frame along the material flowing direction, a fan system is arranged on the machine frame, a separation drum is rotatably arranged in the separation drum separation chamber, and the settling chamber is arranged on the machine frame. The bottom of the separation drum separation chamber is provided with a heavy material discharge port corresponding to one side of the separation drum far away from the settling chamber, and the bottom of the settling chamber is provided with a light material conveyor; the fan system comprises a centrifugal fan, the fan is connected with an air supply pipeline and a dust removal pipeline, an air outlet of the air supply pipeline extends into the separation drum separation chamber, an air return channel is arranged at the top of the settling chamber, and the air return channel is connected with the centrifugal fan through an air return pipe; according to the scheme, through reasonable structural design and an efficient separation mechanism, effective separation of heavy substances and light substances in materials is achieved, meanwhile, a dust removal pipeline is arranged, and the environmental protection performance and the energy efficiency level of the dust removal device are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air separation equipment, and particularly relates to a novel air separator. Background Art

[0002] In the material processing and recycling industry, as a common separation device, the air separator is widely used in multiple fields such as agriculture, mining, and plastic recycling. The working principle of the air separator is to use wind force to separate the light and heavy components in the mixed materials, so as to improve the utilization rate of resources and reduce environmental pollution. In the technical field of air separation equipment, traditional air separators often have problems such as low separation efficiency, high energy consumption, and serious dust pollution during the material separation process. With the continuous development of industrial technology and the increasing environmental protection requirements, the market's demand for efficient, energy-saving, and environmentally friendly air separation equipment is becoming increasingly urgent. Traditional air separators usually adopt fixed air separation devices, and their air separation effects are greatly affected by various factors such as material properties, wind speed, and wind direction, making it difficult to achieve precise control. At the same time, since the dust generated during the air separation process cannot be effectively treated, it often pollutes the environment. In addition, the complex structure and high maintenance cost of traditional air separators also limit their popularization in practical applications. Summary of the Invention

[0003] Based on such a background, the utility model proposes a novel air separator. Through reasonable structural design and efficient separation mechanism, this solution realizes the effective separation of heavy and light substances in the materials. At the same time, it is equipped with a dust removal pipeline, and its environmental protection performance and energy efficiency level have also been significantly improved.

[0004] In order to achieve the above object, the embodiments of the utility model specifically adopt the following technical solutions: A novel air separator includes a frame. Along the material flow direction on the frame, a feeding conveyor mechanism, a separation drum separation chamber, and a sedimentation chamber are installed. A fan system for providing air separation force in the separation drum separation chamber is installed on the frame. A separation drum is rotatably installed in the separation drum separation chamber. A heavy material discharge port is installed at the bottom of the separation drum separation chamber corresponding to the side of the separation drum away from the sedimentation chamber. The air outlet of the fan system faces the position of the separation drum in the separation drum separation chamber. The material passes through the separation drum separation chamber, the heavy material falls from the heavy material discharge port, and the light material is blown into the sedimentation chamber by the fan system. A light material conveyor for conveying light materials is installed at the bottom of the sedimentation chamber. The fan system includes a centrifugal fan. The fan is connected with a air supply pipeline and a dust removal pipeline. The air outlet of the air supply pipeline extends into the separation drum separation chamber. A return air channel is installed at the top of the sedimentation chamber. The return air channel is connected to the centrifugal fan through a return air pipe. A reversing mechanism for switching the air supply path is also installed on the frame.

[0005] In order to further optimize the utility model, the following technical solutions can be preferably selected:

[0006] Preferably, the distance between the feeding and conveying mechanism and the separation chamber of the separation drum can be adjusted to meet the requirement of adjusting the distance from the separation drum according to the density and humidity of the incoming material. The feeding and conveying mechanism includes a feeding conveyor, and a feeding hopper is installed above the feeding conveyor.

[0007] Preferably, a dust removal box is installed at the end of the dust removal pipeline, and a plurality of bag dust collectors are installed in the dust removal box.

[0008] Preferably, the air volume reversing mechanism includes an air volume reversing plate installed between the air supply pipeline and the dust removal pipeline. The air volume reversing plate is rotatably installed on the frame, and a driving mechanism for driving the air volume reversing plate to rotate is installed on the frame. The driving mechanism drives the air volume reversing plate to seal the dust removal pipeline and adjust the air volume of the air supply pipeline.

[0009] Preferably, the outlet direction of the air supply pipeline can be adjusted. An upper outlet baffle and a lower outlet baffle are oppositely installed at the outlet position of the air supply pipeline. One ends of the upper outlet baffle and the lower outlet baffle are hinged to the air supply pipeline, and an adjusting member I for changing the inclination angles of the upper outlet baffle and the lower outlet baffle is installed on the air supply pipeline. The movable ends of the adjusting member I are respectively connected to the backs of the upper outlet baffle and the lower outlet baffle, and the outlet direction is changed by changing the angles of the upper outlet baffle and the lower outlet baffle.

[0010] Preferably, a falling stone collection bin is also provided at the lower part of the air supply pipeline, and a bin door is installed at the bottom of the falling stone collection bin.

[0011] Preferably, an adjustable air direction plate is installed at a position corresponding to the upper part of the separation drum in the separation chamber of the separation drum. One end of the adjustable air direction plate away from the feeding and conveying mechanism is hinged to the frame, and an adjusting member II is installed on the frame corresponding to the other end of the adjustable air direction plate. The movable end of the adjusting member II is hinged to the back of the adjustable air direction plate.

[0012] Preferably, a return air cover is installed at the top of the separation chamber of the separation drum. The return air pipe is connected to the side wall of the return air cover, and the return air cover is communicated with the return air channel. An inner baffle and an outer baffle are installed on the frame corresponding to the bottom of the separation drum.

[0013] Preferably, a return air hole plate is installed at the top of the sedimentation chamber. A return air channel is formed between the sedimentation chamber and the return air hole plate. Sedimentation chamber baffle belts are installed at positions on both sides of the light material conveyor at the bottom of the sedimentation chamber, and a maintenance door is installed on the side wall of the sedimentation chamber.

[0014] Preferably, the light material conveyor includes a light material conveyor belt rotatably installed on the frame. A supporting roller is rotatably installed on the frame at a position corresponding to the lower side of the light material conveyor belt. A scraping mechanism is installed on the frame at a position corresponding to the lower side of the conveyor belt of the light material conveyor. The scraping mechanism includes a rubber scraping plate installed on the frame along the direction perpendicular to the conveying direction of the light material conveyor. The scraping part of the rubber scraping plate is attached to the conveying surface of the light material conveyor.

[0015] The beneficial effects of the present utility model are mainly reflected in the following aspects:

[0016] (1) High-efficiency separation ability: Through the carefully designed separation drum and fan system, this air separator can efficiently separate heavy materials and light materials in the material. The rotation of the separation drum combined with the air separation force generated by the fan system ensures that the light materials are effectively blown up and sent into the settling chamber, while the heavy materials are directly discharged through the heavy material discharging port, thus achieving an efficient separation effect.

[0017] (2) Environmental protection and energy saving: The fan system not only provides a powerful air separation force, but also reduces the dust pollution generated during the air separation process through the design of the dust removal pipeline. In addition, the return air channel at the top of the settling chamber enables some air to be re-sucked into the fan system and recycled, which not only improves the energy efficiency of the air separator, but also reduces energy consumption and emissions, meeting the requirements of modern industry for environmental protection and energy saving.

[0018] (3) Compact and reasonable structure: The overall structure of this air separator is designed compactly and reasonably, with close connection between components, small floor area, and easy installation and maintenance. At the same time, components such as the feeding conveyor mechanism, separation drum separation chamber, and settling chamber installed along the material flow direction enable the material to smoothly pass through the entire processing process, improving the operation efficiency and stability of the equipment.

[0019] (4) Easy to operate: This air separator adopts an automatic control system, which is easy to operate. Users can realize functions such as starting, stopping, and adjusting the equipment through simple operations, greatly reducing the operation difficulty and labor cost.

[0020] (5) Wide application range: Due to the advantages of high efficiency, environmental protection, and energy saving of this air separator, it is applicable to the separation and treatment of various materials. Whether it is heavy materials such as ores and coals, or light materials such as plastics and papers, they can all be effectively separated and treated by this air separator. Description of the Drawings

[0021] Figure 1 Schematic three-dimensional structure of the new air separator in Embodiment 1 Figure 1 ;

[0022] Figure 2 Schematic three-dimensional structure of the new air separator in Embodiment 1Figure 2 ;

[0023] Figure 3 Top view of the novel air separator in Embodiment 1

[0024] Figure 4 Schematic diagram of the internal structure of the novel air separator in Embodiment 1;

[0025] Figure 5 Schematic diagram of the three-dimensional structure of the feeding and conveying mechanism in Embodiment 1;

[0026] Figure 6 Schematic diagram of the internal structure of the feeding and conveying mechanism in Embodiment 1

[0027] Figure 7 Schematic diagram of the three-dimensional structure of the separation chamber of the separation drum in Embodiment 1;

[0028] Figure 8 Schematic diagram of the internal structure of the separation chamber of the separation drum in Embodiment 1

[0029] Figure 9 Schematic diagram of the three-dimensional structure of the fan system in Embodiment 1;

[0030] Figure 10 Schematic diagram of the three-dimensional structure of the sedimentation chamber in Embodiment 1;

[0031] Figure 11 Schematic diagram of the internal structure of the sedimentation chamber in Embodiment 1.

[0032] In the figure: 1, frame; 2, feeding and conveying mechanism; 3, separation chamber of the separation drum; 4, sedimentation chamber; 5, fan system; 6 - return air duct;

[0033] 201 - feeding conveyor; 202 - feeding hopper;

[0034] 301 - separation drum; 302 - adjustable air direction plate; 303 - adjusting part two; 304 - return air hood; 305 - inner baffle; 306 - outer baffle;

[0035] 401 - return air orifice plate; 402 - sedimentation chamber baffle belt; 403 - inspection door; 404 - light material conveyor belt; 405 - idler roller; 406 - rubber scraper;

[0036] 501 - centrifugal fan; 502 - air supply pipeline; 503 - dust removal pipeline; 504 - dust removal box; 505 - bag filter; 506 - air intake reversing plate; 507 - swing arm; 508 - arc chute; 509 - upper air outlet baffle; 510 - lower air outlet baffle; 511 - adjusting part; 512 - falling stone collection bin; 513 - bin door. Detailed implementation manners

[0037] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0038] Example 1: Figures 1-11 A new type of air separator includes a frame 1, including a feed conveying mechanism 2, a separation drum separation chamber 3, and a sedimentation chamber 4 installed on the frame along the material flow direction, a fan system 5 for providing air separation force in the separation drum separation chamber is installed on the frame, and a separation drum 301 is rotatably installed in the separation drum separation chamber, wherein an adjustable wind direction plate 302 is installed at a position above the separation drum corresponding to the separation drum in the separation drum separation chamber, and the adjustable wind direction plate is hingedly installed on the frame at one end away from the feed conveying mechanism, and an adjusting member 2 303 is installed on the other end of the frame corresponding to the adjustable wind direction plate, and the movable end of the adjusting member 2 is hinged to the back of the adjustable wind direction plate; a return air hood 304 is installed on the top of the separation drum separation chamber, the return air duct is connected to the side wall of the return air hood, the return air hood is connected to the return air channel, and an inner material baffle plate 305 and an outer material baffle plate 306 are installed on the frame corresponding to the bottom of the separation drum.

[0039] A heavy material discharge port is installed at the bottom of the separation drum separation chamber 3, corresponding to the side of the separation drum away from the sedimentation chamber. The air outlet of the fan system is facing the separation drum position of the separation drum separation chamber. The material passes through the separation drum separation chamber, and the heavy material falls from the heavy material discharge port. The light material is blown into the sedimentation chamber 4 by the fan system. A light material conveyor 6 for conveying light materials is installed at the bottom of the sedimentation chamber 4; wherein a return air tunnel plate 401 is installed on the top of the sedimentation chamber 4, and a return air channel is formed between the sedimentation chamber and the return air tunnel plate. The bottom of the sedimentation chamber corresponds to both sides of the light material conveyor A sedimentation chamber blocking belt 402 is installed at the position, and an inspection door 403 is installed on the side wall of the sedimentation chamber; the light material conveyor includes a light material conveyor belt 404 rotatably installed on the frame, and a roller 405 is rotatably installed on the frame corresponding to the position below the light material conveyor belt. A scraper mechanism is installed on the frame corresponding to the position below the conveyor belt of the light material conveyor, and the scraper mechanism includes a rubber scraper 406 installed on the frame along a conveying direction perpendicular to the light material conveyor, and the scraping part of the rubber scraper is installed in contact with the conveying surface of the light material conveyor.

[0040] The above structural design has the following design advantages: (1) Efficient and continuous material handling: The light material conveyor at the bottom of the settling chamber enables the rapid and continuous conveyance of light materials, significantly enhancing the material handling capacity and production efficiency of the air classifier. This automated conveyance method reduces manual intervention and labor intensity, making the entire air classification process smoother and more efficient. (2) Optimized air flow circulation and dust removal effect: The air return channel formed between the air return hole plate at the top of the settling chamber and the settling chamber ensures the smooth circulation of air flow during the air classification process. This not only improves the energy efficiency ratio of the air classifier but also helps reduce the accumulation of dust in the settling chamber, further enhancing the dust removal effect and improving the working environment. (3) Reduced material leakage and loss: The installation of the material retaining belt in the settling chamber effectively prevents the leakage and scattering of light materials during conveyance, reducing material waste and loss. This design not only keeps the production site clean but also improves the economy and environmental friendliness of the air classifier. (4) Facilitates maintenance and repair: The inspection door installed on the side wall of the settling chamber provides convenience for the daily maintenance and fault repair of the equipment. Operators can easily open the inspection door to inspect, clean, and repair the inside of the settling chamber, the light material conveyor, and its related components, thus ensuring the long-term stable operation of the equipment. (5) Prolongs the service life of the conveyor belt: The setting of the scraping mechanism is another important improvement point. The close fitting of the rubber scraper to the conveying surface of the light material conveyor belt effectively removes the material residues and impurities attached to the conveyor belt, reducing the wear and corrosion of the conveyor belt by the material. This design significantly prolongs the service life of the conveyor belt, reduces the replacement cost, and improves the economy of the equipment.

[0041] Among them, the feeding and conveying mechanism 2 includes a feeding conveyor 201, above which a feeding hopper 202 is installed. The discharging position of the feeding conveyor 201 is directly opposite to the position of the separation drum 301; the fan system 5 includes a centrifugal fan 501, which is connected with a air supply pipeline 502 and a dust removal pipeline 503. At the end of the dust removal pipeline, a dust removal box 504 is installed, and a plurality of bag dust collectors 505 are installed inside the dust removal box. The floating dust in the separation chamber of the air separator is filtered and discharged by means of the dust removal pipeline and the bag dust collectors; the air outlet of the air supply pipeline extends into the separation chamber of the separation drum. A return air passage is installed at the top of the settling chamber, and the return air passage is connected to the centrifugal fan through a return air pipe 6; a reversing mechanism for switching the air supply path is also installed on the frame. The reversing mechanism includes an air intake volume reversing plate 506 installed between the air supply pipeline and the dust removal pipeline. The air intake volume reversing plate is rotatably installed on the frame 1, and a driving mechanism for driving the air intake volume reversing plate to rotate is installed on the frame. The driving mechanism drives the air intake volume reversing plate to seal the dust removal pipeline and adjust the air volume of the air supply pipeline. The air intake volume reversing plate is rotatably installed on the frame through a rotating shaft, and a swing arm 507 is connected to the rotating shaft. An arc-shaped chute 508 is opened on the frame corresponding to the position of the swing arm. The arc-shaped chute corresponds to the adjustment range of the air intake volume reversing plate. By changing the swing position of the swing arm, the position of the air intake volume reversing plate between the air supply pipeline and the dust removal pipeline is changed, so as to realize the adjustment of the dust removal and the air supply wind force.

[0042] The above structural design has the following advantages: (1) Flexible air supply and dust removal adjustment: By installing a reversing mechanism, especially the air intake volume reversing plate and its driving mechanism, this air separator realizes the flexible switching of the air supply path and the precise adjustment of the air supply wind force. This design enables the air separator to dynamically adjust the air supply volume and the dust removal effect according to the actual separation requirements of the materials, so as to minimize dust pollution while ensuring the separation efficiency. (2) Improve separation efficiency and quality: By precisely controlling the air supply wind force, it can ensure that the materials are fully dispersed and suspended in the separation chamber of the separation drum, which is conducive to the effective separation of light substances and heavy substances. At the same time, reducing unnecessary wind force waste also helps to improve the energy efficiency ratio of the air separator and reduce the operation cost. (3) Enhance environmental protection performance: The switching of the air intake volume reversing plate between the dust removal pipeline and the air supply pipeline makes the dust removal process more efficient. When it is necessary to enhance the dust removal effect, the ventilation volume of the dust removal pipeline can be increased to improve the filtration efficiency of the bag dust collector; when it is necessary to improve the separation efficiency, the ventilation volume of the dust removal pipeline can be reduced and the air volume of the air supply pipeline can be increased. This flexible adjustment method helps to achieve the coexistence of environmental protection and high efficiency in the air separation process. (4) Simplify operation and maintenance: The design of the reversing mechanism is simple and clear. The position adjustment of the air intake volume reversing plate can be realized by the swing of the swing arm in the arc-shaped chute. This mechanical adjustment method is not only easy to operate, but also has low maintenance cost, reduces the skill requirements for operators, and improves the reliability and stability of the equipment.

[0043] Among them, the air outlet direction of the air supply pipeline 502 can be adjusted. The air outlet position of the air supply pipeline is relatively installed with an upper air outlet baffle 509 and a lower air outlet baffle 510. One end of the upper air outlet baffle and the lower air outlet baffle is hinged and installed on the air supply pipeline. An adjusting member 511 for changing the inclination angle of the upper air outlet baffle and the lower air outlet baffle is installed on the air supply pipeline. The movable ends of the adjusting member are respectively connected to the backs of the upper air outlet baffle and the lower air outlet baffle. The air outlet direction is changed by changing the angles of the upper air outlet baffle and the lower air outlet baffle. A falling stone collection bin 512 is also provided at the lower part of the air supply pipeline. A bin door 513 is installed at the bottom of the falling stone collection bin. The falling stone collection bin is used to collect sundries such as falling stones that accidentally enter the air supply pipeline. Among them, the falling stone collection bin is vertically designed. The above design has the following design advantages: (1) The adjustable air outlet direction improves the separation effect: By installing the upper air outlet baffle and the lower air outlet baffle and equipping with the adjusting member, this air classifier realizes the flexible adjustment of the air outlet direction of the air supply pipeline. This design enables the air classifier to dynamically adjust the blowing direction of the wind according to the actual separation situation of the materials, thereby optimizing the dispersion and suspension effects of the materials and improving the separation efficiency of light substances and heavy substances. At the same time, the adjustment of the air outlet direction also helps to reduce wind waste and improve the energy efficiency ratio of the air classifier. (2) Enhance the safety and stability of the equipment: The design of the falling stone collection bin and its bin door provided at the lower part of the air supply pipeline provides an effective way to collect and handle sundries such as falling stones that accidentally enter the air supply pipeline. This design not only avoids damage to the internal components of the air classifier caused by sundries, but also reduces the risk of equipment failure caused by the accumulation of sundries, thereby improving the safety and stability of the air classifier. (3) Simplify the maintenance process: The vertical design of the falling stone collection bin makes the cleaning and collection of sundries more convenient. When it is found that sundries enter the air supply pipeline, the operator can quickly open the bin door and take out the sundries from the falling stone collection bin without disassembling or moving other components of the air classifier. This design simplifies the maintenance process, reduces the maintenance cost, and improves the maintenance efficiency of the equipment. (4) Improve the adaptability of the equipment: Through the adjustment of the air outlet direction and the design of the falling stone collection bin, this air classifier shows stronger adaptability when processing different materials. Whether it is facing light materials that are easy to disperse or heavy materials that are easy to agglomerate, the air classifier can ensure the separation effect and the stability of the equipment operation by adjusting the air supply direction and collecting sundries. This flexibility enables the air classifier to be applied in a wider range of industrial fields and meet the diverse needs of different users.

[0044] Furthermore, the distance between the feeding and conveying mechanism 2 and the separation chamber 3 of the separation drum can be adjusted to meet the requirement of adjusting the distance from the separation drum according to the density and humidity of the incoming material. The specific implementation method is that the feeding and conveying mechanism 2 can be horizontally installed on the frame. The above design has the following advantages: (1) Improving adaptability: By adjusting the distance between the feeding and conveying mechanism and the separation chamber of the separation drum, the air separation machine can more flexibly handle incoming materials with different densities and humidities. This design enables the air separation machine to maintain the best working state when processing various materials, thereby improving the separation efficiency and separation quality. (2) Optimizing the separation effect: Adjusting the distance according to the characteristics of the material can ensure that the material has an appropriate speed and distribution state when entering the separation chamber of the separation drum, thereby optimizing the separation effect. This is of great significance for improving product quality and reducing the defective rate.

[0045] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0046] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0047] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a process, article, or device / equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in these processes, articles, or devices / equipment.

[0048] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A new type of pneumatic separator, comprising a frame, characterized in that: The draught fan is a fan which is mounted on a rack and which provides a means for conveying the material to the draught fan and which is arranged on the rack along the direction of material flow; the draught fan is a fan which is mounted on the rack and which provides a means for conveying the material to the draught fan; the draught fan is a fan which is mounted on the rack and which provides a means for conveying the material to the draught fan; and the fan is a fan which is mounted on the rack and which provides a means for conveying the material to the draught fan.

2. The novel air classifier according to claim 1, wherein: The distance between the feed conveying mechanism and the separation drum separation chamber is adjustable. The feed conveying mechanism comprises a feed conveyor, and a feed hopper is installed above the feed conveyor.

3. A novel air separator according to claim 1, characterized in that: A dust removal box is installed at the end of the dust removal pipeline, and a plurality of bag dust collectors are installed in the dust removal box.

4. A novel air separator according to claim 3, characterized in that: The reversing mechanism includes an air intake reversing plate installed between the air supply duct and the dust removal duct. The air intake reversing plate is rotatably installed on a frame. A driving mechanism for driving the air intake reversing plate to rotate is installed on the frame. The driving mechanism drives the air intake reversing plate to seal the dust removal duct and adjust the air volume of the air supply duct.

5. A novel air classifier according to claim 4, characterized in that: The air outlet direction of the air supply duct can be adjusted, and the air outlet position of the air supply duct is relatively installed with an upper air outlet baffle and a lower air outlet baffle, and one end of the upper air outlet baffle and the lower air outlet baffle are hingedly installed on the air supply duct, and an adjusting member 1 for changing the inclination angle of the upper air outlet baffle and the lower air outlet baffle is installed on the air supply duct, and the movable end of the adjusting member 1 is distributed and connected to the back of the upper air outlet baffle and the lower air outlet baffle, and the air outlet direction is changed by changing the angle of the upper air outlet baffle and the lower air outlet baffle.

6. A novel air classifier according to claim 4, characterized in that: A rock collecting bin is provided at the lower portion of the air supply pipeline, and a bin door is installed at the bottom of the rock collecting bin.

7. A novel air classifier according to claim 4, characterized in that: An adjustable wind direction plate is installed at a position above the separation drum in the separation chamber of the separation drum. The adjustable wind direction plate is hingedly installed on the frame at one end facing away from the feed conveying mechanism. An adjusting member 2 is installed on the frame at the other end corresponding to the adjustable wind direction plate. The movable end of the adjusting member 2 is hinged to the back of the adjustable wind direction plate.

8. A novel air classifier according to claim 1, characterized in that: A return air cover is installed on the top of the separation drum separation chamber, the return air duct is connected to the side wall of the return air cover, the return air cover is connected to the return air channel, and an inner baffle plate and an outer baffle plate are installed on the frame corresponding to the bottom of the separation drum.

9. A novel air classifier according to claim 1, characterized in that: A return air tunnel plate is installed on the top of the settling chamber, and a return air channel is formed between the settling chamber and the return air tunnel plate. Settling chamber material blocking belts are installed on the bottom of the settling chamber corresponding to the positions on both sides of the light material conveyor, and an inspection door is installed on the side wall of the settling chamber.

10. A novel air separator according to claim 1, characterized in that: The light material conveyor includes a light material conveyor belt rotatably installed on the frame. A roller is rotatably installed on the frame at a position corresponding to the lower side of the light material conveyor belt. A scraping mechanism is installed on the frame at a position corresponding to the lower side of the conveyor belt of the light material conveyor. The scraping mechanism includes a rubber scraping plate installed on the frame along the direction perpendicular to the conveying direction of the light material conveyor. The scraping part of the rubber scraping plate is attached to the conveying surface of the light material conveyor.

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