Multi-lane blow-off device

Abstract

The utility model belongs to the technical field of blowing and removing, especially multiple channel blowing and removing device, include: first support, first support one side is provided with second support, first support with second support all install conveying assembly. The utility model technical scheme can flexibly adjust the height of driven roller through the driven roller of first support rotatory installation cooperation elevating system, makes the material guide roller, driven roller and the self -rotating roller form the concave groove, supports the material in the material guide roller, driven roller and the self -rotating roller, with the material rolling assembly in the second support can drive the self -rotating roller and the material guide roller opposite direction rotation, rotates the material between first support and second support, makes each angle of material surface can be fully exposed in the action range of subsequent blowing and removing assembly, again combines blowing and removing assembly to the accurate removal of the impurity on the material surface, effectively promotes the comprehensiveness of impurity removal, greatly improves the cleanliness of material.

Description

Technical Field

[0001] This utility model belongs to the field of air blowing rejection technology, and particularly relates to a multi-channel air blowing rejection device. Background Technology

[0002] Currently, in fields such as material processing, food production, and pharmaceutical manufacturing, material selection is a key link in ensuring product quality. The removal effect of surface impurities (such as dust, debris, and hair) directly determines the cleanliness and pass rate of the final product. The material impurity removal equipment commonly used in the industry is mainly divided into three categories: manual screening, vibration screening, and single-channel air blowing removal. However, all of them have significant technical defects in practical applications and are difficult to meet the needs of high-quality material processing.

[0003] Traditional air-blowing rejection equipment often uses a single-channel, fixed-angle air-blowing structure. The nozzle can only blow on a single surface or fixed area of ​​the material. However, the materials actually processed (such as bottle-shaped, cylindrical, and spherical materials) are mostly three-dimensional structures with multiple angled depressions or obstructions on their surfaces. A single-channel airflow cannot cover these blind spots. When removing dust from the surface of plastic bottles, existing equipment can only blow on the front of the bottle, while the dust inside the bottle mouth and at the junction of the bottle body and bottom is difficult to remove. This results in impurities remaining in the rejected material. Although some equipment attempts to improve the coverage by adjusting the nozzle angle, due to structural design limitations, the adjustment is prone to airflow interference, which reduces the local blowing force and further affects the rejection effect.

[0004] Therefore, we propose a multi-channel air-blowing removal device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned technical problems by providing a multi-channel air-blowing removal device, which achieves the effect of comprehensive impurity removal.

[0006] In view of this, the present invention provides a multi-channel air blowing rejection device, comprising: a first support, a second support disposed on one side of the first support, and a conveying component installed in both the first support and the second support;

[0007] A first support is installed between a first support and a second support. A driven roller is rotatably installed inside the first support. Lifting mechanisms are installed on both sides of the driven roller. The lifting mechanisms are used to drive the driven roller to rise and fall.

[0008] The second support is installed between the first support and the second support. A material rolling assembly is installed inside the second support. The material rolling assembly is used to drive the material to rotate between the first support and the second support.

[0009] An air-blowing rejection assembly is installed between the first support and the second support. The air-blowing rejection assembly is used to remove impurities from the surface of the material.

[0010] Furthermore, the conveying assembly includes drive rollers rotatably mounted on both sides of the first and second supports, and a conveyor belt is rotatably mounted on the outer side of each of the two drive rollers. Guide rollers are rotatably mounted on the end of the conveyor belt inside the first support and the beginning of the conveying process inside the second support.

[0011] Furthermore, each of the guide rollers is connected to a corresponding drive roller via a transmission assembly.

[0012] Furthermore, a first motor is fixedly installed on the side wall of both the first bracket and the second bracket. The drive output end of the first motor is connected to the transmission shaft, and the other ends of the two transmission shafts pass through the first bracket and the second bracket respectively and are fixedly connected to the central shaft of the corresponding guide roller.

[0013] Furthermore, the lifting mechanism includes sliding grooves opened on both sides of the first bracket, with sliders slidably installed in the sliding grooves, a connecting frame fixedly installed on the outer wall of the slider, an electric push rod fixedly installed on the side wall of the connecting frame, the other end of the electric push rod fixedly connected to the side wall of the first bracket, and the two ends of the driven roller rotatably connected to the two sliders respectively.

[0014] Furthermore, the rolling assembly includes a rotating roller rotatably mounted on the top inner side of the second bracket, with one end of the rotating roller having a central shaft that passes through the second bracket and is fixedly connected to the second motor drive shaft.

[0015] Furthermore, the tops of the conveyor belt, guide roller, and rotating roller are all on the same horizontal line.

[0016] Furthermore, the air-blowing rejection assembly includes an air pump installed at the bottom of the first support and the second support. The air pump outlet is connected to a multi-port connector, and each of the multi-component interfaces of the multi-port connector is connected to a nozzle. The multiple nozzles are evenly distributed between the driven roller and the rotating roller. The port of each nozzle is arranged in an inclined manner, and the nozzle orifice of the nozzle is set downward.

[0017] Furthermore, the middle portions on both sides of the driven roller are recessed to form notches.

[0018] The beneficial effects of this utility model are:

[0019] The multi-channel air-blowing rejection device, with its first and second supports and conveying components installed within both, achieves stable and continuous material transport within the device. This provides a consistent material transport foundation for subsequent impurity rejection processes, preventing interruptions in material transport from affecting overall processing efficiency. The driven roller, rotatably mounted on the first support, works in conjunction with a lifting mechanism to flexibly adjust its height, creating a groove between the guide roller, driven roller, and rotating roller. This groove supports the material within these components. As the rolling assembly within the second support drives the rotating roller to rotate in the opposite direction to the guide roller, the material rotates between the first and second supports. This ensures that all angles of the material surface are fully exposed to the action range of the subsequent air-blowing rejection components. Combined with the precise removal of impurities from the material surface by the air-blowing rejection components, the comprehensiveness of impurity removal is effectively improved, significantly enhancing the cleanliness of the material and meeting the requirements for high-quality material processing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the multi-channel air-blowing removal device proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the transmission belt distribution of the multi-channel air-blowing removal device proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the lifting mechanism of the multi-channel air blowing removal device proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the air-blowing rejection component structure of the multi-channel air-blowing rejection device proposed in this utility model;

[0024] Figure 5 This is a schematic diagram of the nozzle distribution of the multi-channel air-blowing removal device proposed in this utility model;

[0025] Figure 6 This is a schematic diagram of the driven roller descent and nozzle end structure of the multi-channel air blowing removal device proposed in this utility model;

[0026] Figure 7 This is a schematic diagram of the driven roller structure of the multi-channel air-blowing rejection device proposed in this utility model;

[0027] The markings in the diagram are as follows:

[0028] 1. First support; 11. Second support; 12. Drive roller; 13. Conveyor belt; 14. Guide roller; 15. Drive belt; 16. First motor; 2. First bracket; 21. Slide chute; 22. Slider; 23. Driven roller; 24. Connecting frame; 25. Electric push rod; 3. Second bracket; 31. Rotating roller; 32. Second motor; 33. Air pump; 34. Multi-port connector; 35. Nozzle. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0030] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0031] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0032] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0033] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0034] Reference Figures 1 to 7 A multi-channel air-blowing rejection device, comprising:

[0035] A first support 1 is provided, and a second support 11 is provided on one side of the first support 1. Both the first support 1 and the second support 11 are equipped with conveying components.

[0036] The first support 2 is installed between the first support 1 and the second support 11. A driven roller 23 is rotatably installed inside the first support 2. Lifting mechanisms are installed on both sides of the driven roller 23. The lifting mechanisms are used to drive the driven roller 23 to rise and fall.

[0037] The second support 3 is installed between the first support 2 and the second support 11. A material rolling assembly is installed inside the second support 3. The material rolling assembly is used to drive the material to rotate between the first support 2 and the second support 3.

[0038] An air-blowing removal assembly is installed between the first support 2 and the second support 3. The air-blowing removal assembly is used to remove impurities from the surface of the material.

[0039] This application utilizes the conveying components within the first support 1 and the second support 11 to achieve segmented material transfer. The material first enters the conveying component of the first support 1, and after initial conveying, it enters the area of ​​the first bracket 2. Under the action of the lifting mechanism, the driven roller 23 within the first bracket 2 adjusts its height according to the thickness and size of the material to be processed. The lifting mechanism drives the driven roller 23 to rise or fall, flexibly adjusting its height so that the guide roller 14, driven roller 23, and rotating roller 31 form a groove, supporting the material within them. As the rolling component within the second bracket 3 drives the rotating roller 31 to rotate in the opposite direction to the guide roller 14, the material rotates between the first bracket 2 and the second bracket 3, ensuring that all angles of the material surface are fully exposed. When the material passes through the air-blowing removal component between the first bracket 2 and the second bracket 3, the air-blowing removal component generates airflow to sweep the material surface, removing impurities adhering to it.

[0040] It should be noted that the material to be conveyed in the equipment is limited to a bottle shape, a cylindrical shape, or a spherical shape.

[0041] In the example of this application, the conveying assembly includes drive rollers 12 rotatably mounted on both sides of the first support 1 and the second support 11. Conveyor belts 13 are drivenly mounted on the outer sides of the two corresponding drive rollers 12. Guide rollers 14 are rotatably mounted on the end of the conveyor belt 13 inside the first support 1 and the beginning of the conveying inside the second support 11. Several bearings are respectively mounted on the side walls of the first support 1 and the second support 11. The two ends of the guide rollers 14 are respectively fixedly connected to the inner shaft of the corresponding bearings.

[0042] As a preferred example of this utility model, when the conveying assembly is started, the drive rollers 12 on both sides of the first support 1 and the second support 11 rotate synchronously. Under the action of friction, they drive the outer conveyor belt 13 to circulate. The material is placed on the conveyor belt 13 of the first support 1 and is conveyed towards the second support 11 with the movement of the conveyor belt 13. When the material is conveyed to the end of the conveyor belt 13 of the first support 1, the guide roller 14 installed at the end starts to rotate, which plays a role in receiving and guiding the material. The guide roller 14 guides the material smoothly to the starting end of the conveyor belt 13 of the second support 11 through the power generated by its own rotation. At the same time, the guide roller 14 at the starting end of the conveyor belt 13 of the second support 11 rotates synchronously, which further assists the material to smoothly enter the conveyor belt 13 of the second support 11, avoids the material from getting stuck or accumulating at the junction of the two conveyor belts 13, and ensures that the material is continuously and smoothly conveyed in the entire conveying system.

[0043] In the example of this application, the guide rollers 14 are all connected to the corresponding drive rollers 12 through a transmission assembly. The transmission assembly includes a transmission belt 15 installed on one side of the central shaft of the guide roller 14, and the other end of the transmission belt 15 is connected to the central shaft of the corresponding drive roller 12.

[0044] As a preferred example of this utility model, when the drive roller 12 in the conveying assembly rotates, the drive roller 12 transmits power to the corresponding guide roller 14 through the transmission assembly, so that the guide roller 14 rotates synchronously with the drive roller 12. The rotational speed of the guide roller 14 matches the rotational speed of the drive roller 12, and the rotational speed of the drive roller 12 determines the transmission speed of the conveyor belt 13. Therefore, the rotational speed of the guide roller 14 is always consistent with the transmission speed of the conveyor belt 13. When the material is transferred from the conveyor belt 13 to the guide roller 14, the guide roller 14 rotates at the same speed as the conveyor belt 13, and drives the material to move through friction. This avoids slippage, accumulation or jamming of the material during the transition process due to the speed difference between the guide roller 14 and the conveyor belt 13, and ensures smooth transmission of the material at the connection point.

[0045] In the example of this application, a first motor 16 is fixedly installed on the side wall of both the first bracket 2 and the second bracket 3. The drive output end of the first motor 16 is connected to the drive shaft, and the other end of the two drive shafts passes through the first bracket 2 and the second bracket 3 respectively and is fixedly connected to the central shaft of the corresponding guide roller 14. The other end of the guide roller 14 is fixedly connected to the inner shaft of the corresponding bearing.

[0046] As a preferred example of this utility model, the first motor 16 starts to run after being powered on. Its drive output end drives the transmission shaft to rotate. The end of the transmission shaft away from the motor is fixedly connected to the central shaft of the guide roller 14, thereby driving the guide roller 14 to rotate synchronously. If there is a difference in the transmission speed of the conveyor belt 13 between the first support 1 and the second support 11, or if it is necessary to adjust the speed of the guide roller 14 for different materials, the two independent first motors 16 can be controlled separately. By adjusting the speed of one of the first motors 16, the rotation speed of the corresponding guide roller 14 is changed, so that the speed of the guide roller 14 is matched with the transmission speed of the conveyor belt 13 at the location, ensuring that the material can smoothly transition between the conveyor belt 13 and the guide roller 14 of the first support 1 and the conveyor belt 13 and the guide roller 14 of the second support 11, thereby improving the controllability and stability of material conveying.

[0047] In the example of this application, the lifting mechanism includes a slide groove 21 opened on both sides of the first bracket 2. A slider 22 is slidably installed in the slide groove 21. Bearings are fixedly installed on the inner walls of the two sliders 22. The inner shafts of the two bearings are fixedly connected to both ends of the driven roller 23. A connecting frame 24 is fixedly installed on the outer wall of the slider 22. An electric push rod 25 is fixedly installed on the side wall of the connecting frame 24. The other end of the electric push rod 25 is fixedly connected to the side wall of the first bracket 2. Bearings are fixedly installed on the side walls of the two sliders 22. The inner shafts of the bearings are fixedly connected to the central shaft of the driven roller 23.

[0048] As a preferred example of this utility model, before the material enters the first support 2, an adjustment command is sent to the electric push rod 25 according to the specific specifications of the material. After receiving the command, the electric push rod 25 drives the connecting frame 24, which is fixedly connected to it, to move through a telescopic action. The connecting frame 24 is fixed to the slider 22, and the slider 22 is slidably installed in the grooves 21 on the top of both sides of the first support 2. Therefore, the connecting frame 24 drives the slider 22 to slide up and down along the length of the grooves 21. The slider 22 is connected to the mounting structure of the driven roller 23. The sliding of the slider 22 directly drives the driven roller 23 to rise or fall, thereby adjusting the height of the driven roller 23. During the adjustment process, the grooves 21 guide and limit the movement of the slider 22, ensuring that the slider 22 always slides along a fixed trajectory. This ensures that the driven roller 23 remains horizontal during the lifting and lowering process, avoiding the impact of the material transmission caused by the tilt of the driven roller 23. Finally, the driven roller 23 is adjusted to a height position that matches the material, ensuring the smooth passage of the material.

[0049] As a preferred example of this utility model, when the lifting mechanism drives the driven roller 23 to descend, the guide roller 14, driven roller 23, and rotating roller 31 form a groove, supporting the material within the guide roller 14, driven roller 23, and rotating roller 31. As the rolling assembly in the second support 3 drives the rotating roller 31 to rotate in the opposite direction to the guide roller 14, the material rotates between the first support 2 and the second support 3, ensuring that all angles of the material surface are fully exposed within the effective range of the subsequent air-blowing removal assembly. Conversely, when the lifting mechanism drives the driven roller 23 to rise, it supports the driven roller 23 until it is flush with the guide roller 14 and rotating roller 31, and then drives the second motor 32 to rotate the rotating roller 31 in the opposite direction, so that the rotation direction of the rotating roller 31 is the same as that of the guide roller 14, thus conveying the cleaned material into the second support 11.

[0050] In the example of this application, the rolling assembly includes a rotating roller 31 rotatably mounted on the top inner side of the second bracket 3. A bearing is fixedly mounted on one side of the inner wall of the second bracket 3. The inner shaft of the bearing is fixedly connected to one end of the rotating roller 31. The central shaft of one end of the rotating roller 31 passes through the second bracket 3 and is fixedly connected to the transmission shaft of the second motor 32. The drive output end of the second motor 32 is connected to the transmission shaft.

[0051] As a preferred example of this utility model, when the material enters the area of ​​the second support 3 and comes into contact with the rotating roller 31, the second motor 32 is started. After the second motor 32 is powered on, its transmission shaft directly drives the rotating roller 31, which is fixedly connected to it, to rotate. When the rotating roller 31 rotates, it drives the material to rotate around its own axis through the friction between itself and the material surface. It forms a groove with the guide roller 14, the driven roller 23 and the rotating roller 31, supporting the material in the guide roller 14, the driven roller 23 and the rotating roller 31. As the rolling assembly in the second support 3 can drive the rotating roller 31 to rotate in the opposite direction to the guide roller 14, the material rotates between the first support 2 and the second support 3. This ensures the continuous rotation of the rotating roller 31, providing posture assurance for the subsequent air blowing removal assembly to achieve all-round impurity removal, and allowing the material to complete the rotation action during the transmission process.

[0052] In the example of this application, the tops of the conveyor belt 13, the guide roller 14, and the rotating roller 31 are all on the same horizontal line.

[0053] As a preferred example of this utility model, when the material is conveyed on the conveyor belt 13, since the top of the conveyor belt 13 is flush with the top of the guide roller 14, the material can directly and smoothly transition to the surface of the guide roller 14 after reaching the end of the conveyor belt 13, without having to overcome the height difference. This avoids the material tilting or overturning due to height changes. The material is then conveyed from the guide roller 14 to the rotating roller 31. Since the tops of the guide roller 14 and the rotating roller 31 are also flush, the material can be smoothly transferred to the surface of the rotating roller 31, continuing to maintain a horizontal posture as it rotates with the rotating roller 31 and completing the removal of impurities. Throughout the entire conveying process, the material remains in a horizontal state without the need for additional posture adjustment mechanisms, ensuring the continuity and stability of material conveying and reducing the risk of material damage.

[0054] In the example of this application, the air blowing rejection assembly includes an air pump 33 installed at the bottom of the first support 2 and the second support 3. The air outlet of the air pump 33 is connected to a multi-port connector 34. Each component interface of the multi-port connector 34 is connected to a nozzle 35. The multiple nozzles 35 are evenly distributed between the driven roller 23 and the rotating roller 31. The port of each nozzle 35 is arranged in an inclined manner, and the nozzle of the nozzle 35 is set downward.

[0055] As a preferred example of this utility model, when the material enters the area between the driven roller 23 and the driven roller 31 under the drive of the rotating roller 31, the air pump 33 is started. The air pump 33 generates high-pressure airflow, which enters the multi-port connector 34 through the air outlet. The multi-port connector 34 evenly distributes the high-pressure airflow to each group of nozzles 35, ensuring that each group of nozzles 35 can obtain airflow with consistent pressure and flow. Since multiple groups of nozzles 35 are evenly distributed between the driven roller 23 and the rotating roller 31, and the material continues to rotate under the drive of the rotating roller 31, the airflow sprayed from the nozzles 35 can act on the material surface from multiple directions, sweeping the material surface in an all-round and thorough manner. If the adhesion strength of impurities on the material surface is high, the working pressure of the air pump 33 can be increased to enhance the impact force of the airflow and ensure that the impurities are effectively removed. If the material is light or easily damaged, the pressure of the air pump 33 can be reduced to avoid the material being blown away or damaged by excessive airflow. The impurities blown off by the airflow are removed from the material transport path under the action of gravity or auxiliary airflow, thus completing the impurity removal.

[0056] In the example of this application, recesses are formed in the middle of both sides of the driven roller 23.

[0057] As a preferred example of this utility model, when the material is supported on the top of the driven roller 23, the material will adhere to both sides of the driven roller 23 to support the material. The recessed middle part of both sides of the driven roller 23 forms a notch, which can discharge the impurities blown out by the airflow and prevent them from adhering to the surface of the driven roller 23 and contaminating the material again.

[0058] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A multi-lane air blow rejector characterized by ,include: A first support (1) is provided on one side of the first support (1), and a second support (11) is provided on one side of the first support (1). Conveying components are installed in both the first support (1) and the second support (11). The first support (2) is installed between the first support (1) and the second support (11). A driven roller (23) is rotatably installed inside the first support (2). Lifting mechanisms are installed on both sides of the driven roller (23). The lifting mechanisms are used to drive the driven roller (23) to rise and fall. The second support (3) is installed between the first support (2) and the second support (11). A rolling assembly is installed inside the second support (3). The rolling assembly is used to drive the material to rotate between the first support (2) and the second support (3). An air-blowing removal assembly is installed between the first support (2) and the second support (3), and the air-blowing removal assembly is used to remove impurities from the surface of the material.

2. The multi-lane blowoff rejector of claim 1, wherein, The conveying assembly includes a drive roller (12) rotatably mounted on both sides of the first support (1) and the second support (11), and a conveyor belt (13) is drivenly mounted on the outer side of each of the two drive rollers (12). A guide roller (14) is rotatably mounted on the end of the conveyor belt (13) in the first support (1) and the beginning of the conveying in the second support (11).

3. The multi-lane blowoff rejector of claim 2, wherein, The guide rollers (14) are all connected to the corresponding drive rollers (12) through a transmission assembly.

4. The multi-lane blowoff rejector of claim 3, wherein, The first bracket (2) and the second bracket (3) are both fixedly installed with a first motor (16). The drive output end of the first motor (16) is connected to the transmission shaft, and the other ends of the two transmission shafts pass through the first bracket (2) and the second bracket (3) respectively and are fixedly connected to the central shaft of the corresponding guide roller (14).

5. The multi-lane blowoff rejector of claim 4, wherein, The lifting mechanism includes a slide groove (21) opened on both sides above the first bracket (2). A slider (22) is slidably installed in the slide groove (21). A connecting frame (24) is fixedly installed on the outer wall of the slider (22). An electric push rod (25) is fixedly installed on the side wall of the connecting frame (24). The other end of the electric push rod (25) is fixedly connected to the side wall of the first bracket (2). The two ends of the driven roller are rotatably connected to the two sliders respectively.

6. The multi-lane blowoff rejector of claim 5, wherein, The rolling assembly includes a rotating roller (31) rotatably mounted on the top of the inner side of the second bracket (3). The central shaft of the rotating roller (31) passes through the second bracket (3) and is fixedly connected to the transmission shaft of the second motor (32).

7. The multi-lane blowoff rejector of claim 6, wherein, The tops of the conveyor belt (13), guide roller (14), and rotating roller (31) are all on the same horizontal line.

8. The multi-lane air blow reject device of claim 1, wherein, The air-blowing rejection assembly includes an air pump (33) installed at the bottom of the first bracket (2) and the second bracket (3). The air pump (33) has a multi-port connector (34) connected to its outlet end. The multi-component interfaces of the multi-port connector (34) are all connected to nozzles (35). The multiple nozzles (35) are evenly distributed between the driven roller (23) and the rotating roller (31). The port of each nozzle (35) is arranged in an inclined manner, and the nozzle of the nozzle (35) is set downward.

9. The multi-lane air blow reject device of claim 1, wherein, The recessed portion is formed in the middle portion of the both sides of the driven roller (23).

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