An air separation device with a pressure barrier

Abstract

This application relates to the field of waste air separation technology and discloses an air separation device with a compressed air barrier, comprising an air separation feeding unit, an air separation conveying unit, an air duct mechanism, a compressed air mechanism, and an adjustable unit. The air separation feeding unit is the input end of the waste material, conveying the waste material to be separated, including mixed household waste and waste packaging waste, to the air separation conveying unit. The air separation feeding unit adopts a belt conveyor structure or a vibrating feeding structure to ensure that the material does not accumulate or block during the conveying process, providing a stable material supply for subsequent separation processes. The air separation conveying unit is the load-bearing structure for separating waste material, and is set at a predetermined inclination angle. The inclination angle can be flexibly adjusted according to the density and particle size characteristics of the waste to be separated (the inclination angle can be appropriately increased for lightweight plastic waste, and decreased for mixed heavy waste) to adapt to the separation requirements of different materials.

Description

Technical Field

[0001] This application relates to the field of waste air separation technology, and in particular to an air separation device with a pressure barrier. Background Technology

[0002] In the waste management industry, air separation is a key process for separating materials of different densities in waste. Its principle is to utilize airflow to exert differentiated forces on waste materials of different densities and particle sizes, thus separating lightweight materials (such as plastics and paper) from heavy materials (such as metals and bricks). However, existing air separation equipment suffers from the following technical deficiencies in actual operation.

[0003] During air separation, the blowing force of the airflow on lightweight materials can easily cause them to rise excessively, with some materials adhering to the upper wall of the air separator. This not only results in material loss during separation but also requires periodic shutdowns for cleaning, affecting the continuous operating efficiency of the equipment. Poor sorting adaptability: Different types of waste (such as kitchen waste, waste packaging waste, and mixed household waste) have significant differences in density and particle size. Existing air separators often have fixed conveying and blocking structures that cannot be flexibly adjusted according to material characteristics, leading to unstable sorting accuracy and difficulty in meeting diverse sorting needs.

[0004] In view of the shortcomings of the existing technology, there is an urgent need to design a device that can limit the height of material lifting and whose structure can be flexibly adjusted according to the sorting requirements, so as to solve the efficiency and accuracy problems in the existing waste air separation operation. Utility Model Content

[0005] To address the aforementioned problems, this application provides an air separation device with a pressure barrier.

[0006] The air separation device with a pressure barrier provided in this application adopts the following technical solution: An air separation device with a pressure barrier for waste air separation includes: an air separation feeding unit for conveying materials to be separated to an air separation conveying unit; an air separation conveying unit set at a predetermined inclined angle, the air separation conveying unit including a conveyor belt and a cover covering the outside of the conveyor belt; an air duct mechanism that cooperates with the air separation conveying unit to provide airflow for material separation; a pressure mechanism set at the upper end of the connection between the air separation feeding unit and the air separation conveying unit to form a pressure barrier to limit the upward height of the material; and an adjustable unit that is adapted to the air separation conveying unit and whose structural state can be adjusted according to the separation requirements.

[0007] Preferably, the compressed air mechanism includes: at least two connecting members respectively fixed to the upper ends of the air classifier feeding unit and the air classifier conveying unit; a two-section compressed air barrier movably connected to the connecting members; and an adjusting member connected to the connection position of the two-section compressed air barrier and rotatably connected to the compressed air barrier. The connecting members and the adjusting member cooperate to drive the compressed air barrier to rotate around the connection point, thereby realizing the angle adjustment of the compressed air barrier.

[0008] Preferably, the ductwork mechanism includes: an air inlet duct for introducing external air sources, a recovery duct connected to the cover of the air separation and conveying unit for recovering airflow during the air separation process, and a blower duct connected to the air inlet duct and disposed toward the air separation and conveying unit.

[0009] Preferably, the adjustable unit includes: a positioning main board fixed at a corresponding position on the upper cover of the air separation conveyor unit, an extension baffle that can be connected to the positioning main board, and a baffle curtain disposed at the end of the extension baffle away from the positioning main board for assisting in blocking materials.

[0010] Preferably, the positioning main board has a recovery air hole, which is connected to the input end of the recovery air duct. The extension baffle is slidably mounted on the positioning main board through a sliding groove and a slider to adjust the extension length.

[0011] Preferably, the adjusting component is configured as a bolt assembly or a hinge adjusting structure. When a bolt assembly is used, adjusting holes are respectively provided on the connecting component and the air pressure barrier. The angle of the air pressure barrier can be adjusted by loosening the nut, and the nut can be tightened again after adjustment to achieve fixation.

[0012] In summary, this application includes the following beneficial technical effects: By setting an angle-adjustable compressed air mechanism at the upper end of the connection between the air separation feeding unit and the air separation conveying unit, a stable compressed air barrier is formed, which effectively limits the upward height of the waste material, prevents the material from sticking to the upper wall of the equipment, reduces the number of downtime cleanings, and improves the continuous operation efficiency of the equipment. Attached Figure Description

[0013] Figure 1 This is a front view of an air separation device with a pressure barrier according to the present invention.

[0014] Figure 2 This is a top view of an air separation device with a pressure barrier according to the present invention.

[0015] Figure 3 This is a schematic diagram of the adjustable unit of this utility model.

[0016] Figure 4 This utility model Figure 1A magnified view of a portion of area A.

[0017] Explanation of reference numerals in the attached drawings: 1. Air separation feeding unit; 2. Air separation conveying unit; 3. Air duct mechanism; 4. Compressed air mechanism; 5. Adjustable unit; 31. Recycled air duct; 32. Air inlet pipe; 33. Air blowing pipe; 41. Compressed air barrier; 42. Adjusting component; 43. Connecting component; 51. Positioning main board; 52. Recycled air hole; 53. Extension baffle; 54. Curtain. Detailed Implementation

[0018] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0019] This application discloses an air separation device with a pressure barrier 41. (Refer to...) Figure 1-2 The system includes: an air-separation feeding unit 1, an air-separation conveying unit 2, an air duct mechanism 3, a compressed air mechanism 4, and an adjustable unit 5. The air-separation feeding unit is the input end for waste materials, conveying the waste materials to be sorted (mixed household waste, waste packaging waste, etc.) to the air-separation conveying unit 2. The air-separation feeding unit 1 adopts a belt conveyor structure or a vibrating feeding structure to ensure that the material does not accumulate or block during the conveying process, providing a stable material supply for subsequent sorting processes. The air-separation conveying unit 2 is the load-bearing structure for sorting waste materials. It is set at a predetermined inclination angle, which can be flexibly adjusted according to the density and particle size characteristics of the waste to be sorted (the inclination angle can be appropriately increased for lightweight plastic waste, and decreased for mixed heavy waste) to adapt to the sorting requirements of different materials. The air-separation conveying unit 2 specifically includes a conveyor belt and a cover over the conveyor belt. The conveyor belt is made of wear-resistant and corrosion-resistant rubber or metal, with anti-slip textures on the surface to prevent material slippage during inclined conveying. The cover is a closed or semi-closed structure, which on the one hand prevents material splashing during sorting, and on the other hand works with the air duct mechanism 3 to form a stable airflow channel, ensuring uniform airflow force on the material. The air duct mechanism 3 works with the air-separation conveying unit 2 to provide airflow for sorting waste materials. The compressed air mechanism 4 is located at the upper end of the connection between the air-separation feeding unit and the air-separation conveying unit 2, forming a compressed air barrier 41 to limit the upward height of waste materials during sorting and prevent material from sticking to the upper wall of the equipment. The adjustable unit 5 is adapted to the air-separation conveying unit 2, and optimizes the sorting effect by adjusting its own structural state.

[0020] The duct system 3 includes a recovery duct 31, an inlet duct 32, and a blower duct 33. One end of the inlet duct 32 is connected to an external air source (centrifugal fan), and the other end is connected to the blower duct 33. It is used to introduce the airflow generated by the external air source into the equipment. An airflow regulating valve can be installed on the inlet duct 32 to achieve precise control of the airflow. The blower duct 33 is arranged along the length or width of the air separation conveyor unit 2, and its outlet faces the material on the surface of the conveyor belt. The airflow is blown through the blower duct 33 to the material to be separated, and the light material is separated from the heavy material by the force of the airflow. One end of the recovery duct 31 is connected to the cover of the air separation conveyor unit 2, and the other end can be connected to the exhaust gas treatment device or the return air fan. It is used to recover the airflow during the separation process. On the one hand, it can reduce airflow waste and energy consumption. On the other hand, it can centrally treat the dust-laden airflow and avoid environmental pollution.

[0021] like Figure 4 As shown, the compressed air mechanism 4 specifically includes a connector 43, a compressed air barrier 41, and an adjusting component 42. At least two connectors 43 are provided, respectively fixed to the upper end of the air-separated feeding unit and the upper end of the air-separated conveying unit 2 cover by bolts or welding, serving as the installation support structure for the compressed air barrier 41. The compressed air barrier 41 is made of lightweight, wear-resistant metal or plastic sheet material, and is divided into two sections. The two sections of the compressed air barrier 41 are movably connected to their corresponding connectors 43, and can rotate around the connection point of the connectors 43. The adjusting component 42 is connected to the connection position of the two sections of the compressed air barrier 41, and is also connected to the compressed air barrier. 41 is a rotating connection, and the adjusting component 42 can be specifically set as a bolt assembly or a hinge adjustment structure. When a bolt assembly is used, the connecting component 43 and the air pressure barrier 41 are respectively provided with adjustment holes. After the bolt passes through the adjustment hole, it is locked by a nut. Loosening the nut can push the air pressure barrier 41 to rotate around the connection point to adjust the tilt angle of the air pressure barrier 41. After the adjustment is completed, the nut is tightened again to achieve fixation. When a hinge adjustment structure is used, the adjusting component 42 is connected to the two sections of air pressure barrier 41 through a hinge. The angle of the two sections of air pressure barrier 41 can be adjusted by rotating the hinge. After adjustment, it is fixed by a positioning pin or a buckle.

[0022] By cooperating with the connector 43 and the adjuster 42, the angle of the air pressure barrier 41 can be changed around the connection point, so as to flexibly adjust the angle of the air pressure barrier 41. This allows the blocking height and angle of the air pressure barrier 41 to be adjusted according to the type of waste to be sorted (proportion of lightweight materials, particle size of materials), ensuring that the air pressure barrier 41 can effectively limit the upward movement of materials without affecting the normal conveying and sorting of materials.

[0023] like Figure 3As shown, the adjustable unit 5 includes: a positioning main board 51, a recovery air hole 52, an extension baffle 53, and a curtain 54. The positioning main board 51 is made of metal plate and is fixed to the corresponding position of the cover of the air separation conveying unit 2 by bolts. It is fixed to the inner side wall or top of the cover. The positioning main board 51 has multiple evenly distributed recovery air holes 52 along its length. The recovery air holes 52 provide the air force required by the recovery air duct 31. The extension baffle 53 is made of plate that matches the positioning main board 51 and is slidably mounted on the positioning main board 51. It slides through the cooperation of the sliding groove and the slider. The curtain 54 is made of flexible and wear-resistant rubber or canvas material and is fixed to the end of the extension baffle 53 away from the positioning main board 51 by bolts or adhesive. It helps to block materials and prevent materials from splashing from the end of the extension baffle 53 during the sorting process. At the same time, it can cooperate with the airflow to form a local airflow barrier to improve the sorting accuracy. When it is necessary to adjust the extension length of the extension baffle 53, simply push the extension baffle 53 to slide along the positioning main board 51. After the extension length is adjusted to the target position, pass the fastener bolt or pin through the extension baffle 53 and fix it to the positioning main board 51 to fix the extension baffle 53. The operation is convenient and the adjustment is flexible.

[0024] In actual use, when this equipment is used to sort waste plastic (low density, large particle size difference), the adjustment and operation process of each unit of the equipment is as follows: Adjust the tilt angle of the air separation conveyor unit 2 to 15°-20° to increase the tilt angle to avoid the accumulation of lightweight plastic during the conveying process; the conveyor belt is made of rubber material with anti-slip texture to prevent the plastic material from slipping. Adjust the air volume to medium-high air volume (1500~2000m³ / h) through the air volume regulating valve on the air inlet pipe 32 to ensure that the airflow blown out by the air blowing pipe 33 can effectively carry the lightweight plastic material upward to achieve the separation of plastics of different thicknesses; the recovery air pipe 31 is connected to the return air fan to recover and recycle the sorted airflow, reducing energy consumption. Loosen the nuts of the adjusting component 42 (bolt assembly) to adjust the angle of the two-section air pressure barrier 41 to 30°-45° (angle with the horizontal direction), forming a lower air pressure barrier 41 to limit the upward height of lightweight plastic (preventing it from rising onto the upper wall of the equipment). After adjustment, tighten the nuts to fix the air pressure barrier 41. Push the extension baffle 53 to slide along the positioning main plate 51 to adjust the extension length to the maximum (e.g., 500mm), and fix it to the positioning main plate 51 with fasteners passing through the extension baffle 53; the curtain 54 hangs down naturally to prevent plastic material from splashing from the end of the extension baffle 53, while also helping to form a local airflow barrier to improve sorting accuracy. The air separation feeding unit evenly transports waste plastic to the conveyor belt of the air separation conveyor unit 2; the blowing pipe 33 of the air duct mechanism 3 blows airflow onto the plastic material. Lightweight thin plastic is carried upward by the airflow and moves smoothly along the inside of the cover under the restriction of the air pressure barrier 41, and finally falls into the lightweight material collection area; heavyweight thick plastic slides down the inclined conveyor belt under the action of gravity and the friction of the conveyor belt and falls into the heavy material collection area; the recycling air duct 31 recovers the sorted airflow and realizes recycling.

[0025] When using this equipment to sort mixed household waste (plastics, paper, kitchen waste, bricks, stones, etc.), the adjustment and operation process of each unit is as follows: Adjust the tilt angle of the air separation conveyor unit 2 to 5°-10° to reduce the tilt angle and prevent heavy materials (such as bricks) from sliding down quickly, ensuring that the airflow has enough time to separate light materials; the conveyor belt is made of wear-resistant metal to deal with sharp impurities in the mixed waste. Adjust the inlet air volume to a medium-low air volume (800~1200m³ / h) to prevent high air volume from blowing wet and heavy materials such as kitchen waste upwards; the recovery air duct 31 is connected to the exhaust gas treatment device to centrally treat the airflow containing dust and odors to avoid environmental pollution. Adjust the angle of the two-stage air pressure barrier 41 to 15°-30° to form a higher air pressure barrier 41, which can both limit the upward movement of light materials such as plastics and paper and prevent kitchen waste from sticking to the upper wall of the equipment; after adjustment, tighten the adjusting part 42 nut. The extension length of the extension baffle 53 is adjusted to a medium length (300mm) to match the sorting width requirements of mixed waste; the baffle curtain 54 fits tightly against the edge of the conveyor belt to prevent kitchen waste from splashing, while guiding the airflow to concentrate on lightweight materials. The air-separation feeding unit transports the mixed domestic waste to the air-separation conveying unit 2; the airflow blown by the blower pipe 33 carries lightweight materials such as plastics and paper upwards, which enter the lightweight material collection area under the restriction of the air pressure barrier 41; kitchen waste and heavy materials such as bricks and stones slide down the conveyor belt, and can be further separated from bricks and stones by other sorting equipment (such as screening equipment) to achieve multi-stage sorting of mixed domestic waste.

[0026] It is worth noting that when adjusting the conveying tilt angle of the air separation conveying unit 2, the support leg can be set as a fixed part with telescopic function, and a hydraulic cylinder, air cylinder or other mechanical parts that realize the telescopic function can be used.

[0027] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wind sifting apparatus with a pressurized air barrier for performing waste wind sifting, characterized in that, include: The air-separation feeding unit is used to transport the materials to be separated to the air-separation conveying unit; The air-separating conveyor unit is set at a predetermined inclined angle; the air-separating conveyor unit includes a conveyor belt and a cover covering the outside of the conveyor belt; The ductwork mechanism, in conjunction with the air separation and conveying unit, provides airflow for material sorting. A compressed air mechanism is installed at the upper end of the connection between the air separation feeding unit and the air separation conveying unit to form a compressed air barrier to limit the height of the material rising. An adjustable unit is adapted to the air separation and conveying unit and its structural state can be adjusted according to the sorting requirements.

2. An air separation apparatus having a pressurized air barrier as defined in claim 1, wherein, The compressed air mechanism includes: At least two connecting components are provided, which are respectively fixed to the upper ends of the air-separating feeding unit and the air-separating conveying unit; The wind-pressure barrier is divided into two sections and is movably connected to the connecting component. An adjusting component is connected to the connection position of the two-section air pressure barrier and is rotatably connected to the air pressure barrier. The connecting component and the adjusting component work together to drive the wind pressure barrier to rotate around the connection point, thereby achieving angle adjustment of the wind pressure barrier.

3. An air separation apparatus having a pressurized air barrier as defined in claim 1, wherein, The air duct system includes: Air intake duct, used to introduce external air sources; A recovery duct is connected to the cover of the air separation and conveying unit to recover the airflow during the air separation process; The air blowing duct is connected to the air inlet duct and is positioned toward the air separation and conveying unit.

4. An air separation apparatus having a pressurized air barrier as defined in claim 1, wherein, The adjustable unit includes: The positioning motherboard is fixed at the corresponding position on the upper cover of the air separation and conveying unit; An extension baffle is connected to the positioning motherboard; A curtain is installed at the end of the extended baffle away from the positioning main board to assist in blocking materials.

5. The air separation device with a pressure barrier according to claim 4, characterized in that, The positioning main board has a recovery air hole, which is connected to the input end of the recovery air duct. The extension baffle is slidably mounted on the positioning main board through a sliding groove and a slider to adjust the extension length.

6. The air separation device with a pressure barrier according to claim 2, characterized in that, The adjusting component is configured as a bolt assembly or a hinge adjustment structure. When a bolt assembly is used, the connecting component and the air pressure barrier are respectively provided with adjustment holes. Loosening the nut can adjust the angle of the air pressure barrier. After adjustment, the nut is tightened again to fix it.

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