Automatic separation device for corn leaf and skin impurities and corn

Abstract

The invention relates to the technical field of corn processing, in particular to an automatic separating device for corn leaf and skin impurities and corn, which comprises a mounting frame, an inclined conveying belt is arranged on the mounting frame, a first side plate is correspondingly fixed at the high end of the conveying belt, a second side plate is correspondingly fixed at the low end of the conveying belt, and a movable barrier strip is further included. The second side plate is arranged at the top end of the second side plate; the first adjusting piece is used for adjusting the blocking height of the movable blocking strip; the inclination angle of the conveying belt can be adjusted through the second adjusting piece; separation is achieved through the weight and friction force difference of corn and leaf and skin impurities, corn cobs naturally roll down along the inclined conveying belt under the gravity effect, light leaf and skin impurities are attached to the surface of the conveying belt and move along with the conveying belt, complex separation components such as a roller and a screen are not needed, the overall structure is simple, the manufacturing cost is low, only the conveying belt needs to be driven to operate, and operation is convenient. The energy consumption is greatly reduced, and the later maintenance is more convenient.

Description

Technical Field

[0001] This invention relates to the field of corn processing technology, and in particular to an automatic separation device for corn leaf and peel impurities from corn. Background Technology

[0002] In the fresh corn peeling process of vacuum-packed corn, manual feeding is a core step. However, this step suffers from significant material mixing issues: during feeding, corn cobs are mixed with light impurities such as corn leaves and husks. Due to the limited efficiency of manual feeding, unprocessed corn and leaf / husk impurities are transported to the corn buffer pit via the return conveyor belt. Over time, these impurities accumulate in the pit, easily clogging the feeding elevator in the peeling section, causing feeding interruptions, directly reducing the overall production efficiency of the peeling section, increasing the workload of manual cleaning, and raising both labor and time costs.

[0003] Currently, most equipment in the industry for separating corn from leaf and husk impurities uses traditional methods such as drum screening, vibrating screen separation, and mechanical kneading. These devices are not only complex in structure and expensive to manufacture, but also contain multiple moving parts, resulting in high energy consumption during operation and cumbersome maintenance procedures with relatively high costs. Furthermore, the mechanical contact separation method of traditional equipment easily causes squeezing and impact on the corn cob, leading to kernel breakage and threshing, thus reducing the commercial quality of fresh corn. Some simple separation devices also suffer from poor adaptability, often featuring fixed structural designs that cannot adjust separation parameters according to corn variety and impurity levels, resulting in poor separation effects. They also lack effective auxiliary separation and secondary cleaning structures, making it difficult to solve the practical production problems of mixed materials on the return conveyor belt and impurity accumulation in the material pit during fresh corn processing. They are unable to meet the continuous and efficient production requirements of fresh corn processing. Therefore, this paper proposes an automatic separation device for corn leaf and husk impurities from corn. Summary of the Invention

[0004] To overcome the problems existing in related technologies, this invention provides an automatic separation device for corn husk impurities and corn. It achieves separation by utilizing the weight and frictional differences between corn and husk impurities. Under the action of gravity, the corn cob rolls naturally down the inclined conveyor belt, while the lightweight husk impurities adhere to the surface of the conveyor belt and move with it. There is no need for complex separation components such as rollers and screens. The overall structure is simple and the manufacturing cost is low. Moreover, it only needs to drive the conveyor belt to run, which greatly reduces energy consumption and makes subsequent maintenance more convenient. It is suitable for large-scale promotion and application.

[0005] To achieve the above objectives, the present invention provides an automatic separation device for corn husk impurities and corn, including a mounting frame, on which an inclined conveyor belt is arranged. A first side plate is fixedly attached to the upper end of the conveyor belt, and a second side plate is fixedly attached to the lower end of the conveyor belt. The lower end of the conveyor belt is hinged to the mounting frame. The device also includes: A movable baffle is located at the top of the second side panel; The first adjusting component is connected between the movable stop bar and the second side plate, and is used to adjust the blocking height of the movable stop bar; The second adjusting component is connected between the mounting frame and the first side plate, and the tilt angle of the conveyor belt can be adjusted through the second adjusting component.

[0006] Preferably, it further includes an upper guiding mechanism, which includes at least one baffle plate. The baffle plate is installed obliquely above the conveyor belt, and the oblique direction of the baffle plate is adapted to the conveying direction of the conveyor belt.

[0007] Preferably, the baffle plate is set at an angle of 15°-45° with the upper surface of the conveyor belt, and a gap is left between the baffle plate and the upper surface of the conveyor belt to allow impurities such as corn leaves and corn husks to pass through.

[0008] Preferably, an air blowing pipe and a diffuse reflection photoelectric sensor are installed on the first side plate, and a solenoid valve is installed on the air blowing pipe.

[0009] Preferably, the first adjusting member includes: The first protrusion is fixed to the outer wall of the movable stop bar; The second protrusion is fixed to the outer wall of the second side plate. A first threaded rod is screwed through the second protrusion, and the top end of the first threaded rod is mounted on the lower end face of the first protrusion through a bearing.

[0010] Preferably, a handle is installed at the bottom end of the first threaded rod, and the outer wall of the handle is provided with anti-slip texture.

[0011] Preferably, the second adjusting member includes an adjusting part and a locking part. The adjusting part is used to drive the conveyor belt to rotate around its lower hinge point to adjust the tilt angle. The locking part is used to lock and fix the conveyor belt after the tilt angle is adjusted to the correct position.

[0012] Preferably, the adjustment part includes: A drive motor is fixedly mounted on the mounting bracket, and a connecting rod is installed at the output end of the drive motor; Two gears are symmetrically fixed to the outside of the connecting rod; Two hinge seats are symmetrically fixed to the outer wall of the first side plate. Each hinge seat is hinged with a rack, which meshes with a gear on the corresponding side.

[0013] Preferably, the locking part includes two limiting plates, which are respectively mounted on the connecting rod and corresponding to the rack. The limiting plates are provided with limiting grooves for the rack to pass through. A second threaded rod is screwed onto the outer wall of the limiting plate, and one end of the second threaded rod extends into the limiting groove and abuts against the rack.

[0014] Preferably, the side of the rack facing away from the convex teeth has multiple grooves evenly spaced along its length.

[0015] The technical solution provided by this invention may include the following beneficial effects: 1. In this invention, separation is achieved by utilizing the weight and frictional differences between corn and leaf impurities. The corn cob rolls naturally down the inclined conveyor belt under gravity, while the lightweight leaf impurities adhere to the surface of the conveyor belt and move with it. There is no need for complex separation components such as rollers and screens. The overall structure is simple and the manufacturing cost is low. Moreover, it only requires driving the conveyor belt to run, which greatly reduces energy consumption and makes subsequent maintenance more convenient. It is suitable for large-scale promotion and application. At the same time, during the separation process, the corn rolls naturally under gravity without mechanical squeezing, impact or other external forces, which effectively avoids the problem of corn kernel breakage and threshing, and ensures the integrity and quality of the corn cob to the greatest extent.

[0016] 2. In this invention, the first adjusting component can flexibly adjust the blocking height of the movable baffle to prevent leaf skin impurities from slipping off the bottom of the conveyor belt. The second adjusting component can automatically adjust the tilt angle of the conveyor belt to adapt to the needs of different corn varieties and impurity carrying amounts. Operators can adjust the separation parameters to the optimal state according to the actual production situation, thereby improving the adaptability and separation accuracy of the device.

[0017] 3. In this invention, the upper guiding mechanism and the photoelectric detection blowing mechanism form a dual auxiliary separation structure. The baffle of the upper guiding mechanism can adjust the corn that is unbalanced in force to an oblique posture, so that it can roll down smoothly. Leaf impurities can pass through the gap between the baffle and the conveyor belt, avoiding secondary mixing of impurities and corn. The photoelectric detection blowing mechanism accurately identifies the corn that has not rolled down through the diffuse reflection photoelectric sensor, and automatically blows air to clean it in conjunction with the air blowing pipe, ensuring that there are no omissions in the separation process, improving the thoroughness of separation, and effectively solving the problem of incomplete separation in traditional devices.

[0018] 4. In this invention, the second adjusting component adopts a gear and rack meshing transmission structure. The drive motor drives the conveyor belt to achieve automatic adjustment of the tilt angle, eliminating the need for manual operation and reducing the labor intensity of operators. Furthermore, the gear and rack transmission, combined with the locking structure of the limiting plate and the second threaded rod, can achieve firm fixation after the angle is adjusted to the correct position, preventing the conveyor belt from shifting due to the weight of the material and ensuring the stability and reliability of the device operation.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0020] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same parts in the exemplary embodiments of the invention.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is the present invention. Figure 1 A schematic diagram of the overall structure from another angle; Figure 3 This is the present invention. Figure 2 A schematic diagram of the overall structure from another angle; Figure 4 This is a side view of the structure of the present invention; Figure 5 This is a front view structural diagram of the present invention; Figure 6 This is a schematic diagram of the structure of the first adjusting member of the present invention; Figure 7 This is a schematic diagram of the structure of the second adjusting member of the present invention; Figure 8 This is a partial structural schematic diagram of the second adjustment component of the present invention; Figure 9 This is a system schematic diagram of the present invention.

[0022] The correspondence between the labels and component names in the attached figures is as follows: 1. Mounting frame; 2. Conveyor belt; 3. First side plate; 4. Movable baffle; 5. Material baffle plate; 6. First adjusting component; 61. First protrusion; 62. Second protrusion; 63. First threaded rod; 64. Tightener; 7. Second adjusting component; 71. Drive motor; 72. Gear; 73. Connecting rod; 74. Hinge seat; 75. Rack; 751. Groove; 76. Limiting plate; 77. Limiting groove; 78. Second threaded rod; 8. Air blowing pipe; 9. Diffuse reflection photoelectric sensor; 10. Second side plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this invention. Preferred embodiments of the invention will now be described in more detail with reference to the accompanying drawings. Although preferred embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the invention more thorough and complete, and to fully convey the scope of the invention to those skilled in the art.

[0024] The technical solutions of the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] Example 1: See Figures 1-9As shown, this invention proposes an automatic separation device for corn husk impurities from corn, including a mounting frame 1 and an electrical control system. The mounting frame 1 can be welded from structural steel. The electrical control system includes a touch screen, a PLC controller, and a communication module. The touch screen and communication module are respectively connected to the PLC controller. The touch screen is used for local manual operation and parameter setting. The communication module adopts an Ethernet communication module, supports the TCP / IP communication protocol, and can be directly connected to the PLC controller to realize two-way communication between the device and a remote control terminal (such as a computer or mobile APP). Operators do not need to be physically present on-site to view the device in real time through the remote terminal. The device displays the operating parameters and status of the equipment and can remotely send control commands, such as remotely starting and stopping the device, remotely adjusting operating parameters, and remotely handling simple faults. This greatly improves the ease of operation and makes it suitable for large-scale corn processing workshops and large-scale farms. It can reduce the number of on-site operators and lower labor costs. The mounting frame 1 is equipped with an inclined conveyor belt 2, which is a wear-resistant and non-slip rubber ring conveyor belt. It is combined with a drive roller, a driven roller, and a belt motor to form a conveying structure. It uses the principle of material rolling to achieve the initial separation of corn from corn leaves, corn husks, and other impurities. That is, the corn moves along the conveyor belt under the action of gravity. The inclined surface of conveyor belt 2 rolls down naturally. Lightweight and flexible impurities such as corn leaves and husks adhere to the surface of conveyor belt 2 due to friction with the belt surface. They move synchronously with the direction of travel of conveyor belt 2, completing the separation of the two. The belt motor is a variable frequency speed control motor, and the motor speed can be adjusted by a PLC controller, thereby adjusting the travel speed of conveyor belt 2 to adapt to the separation requirements under different working conditions. The high end of conveyor belt 2 is fixed with a first side plate 3, and the low end is fixed with a second side plate 10. Both the first side plate 3 and the second side plate 10 are made of rigid metal plates, and the low end of conveyor belt 2 is hinged to the mounting frame 1. It also includes a movable baffle 4, the first side plate 3, and the second side plate 10. The first adjusting component 6 and the second adjusting component 7 are provided. The movable baffle 4 is set at the top of the second side plate 10 to block corn leaves, corn husks and other impurities from falling, but does not block the corn from rolling down. The first adjusting component 6 is connected between the movable baffle 4 and the second side plate 10 to adjust the blocking height of the movable baffle 4. The second adjusting component 7 is connected between the mounting frame 1 and the first side plate 3. The tilt angle of the conveyor belt 2 can be adjusted by the second adjusting component 7. When the tilt angle of the conveyor belt 2 increases, the corn rolls faster, and when the angle decreases, the corn rolls slower. The tilt angle can be adjusted to the optimal range by the second adjusting component 7 to balance separation efficiency and separation quality.

[0026] Among them, see Figures 5-6As shown, the first adjusting component 6 includes a first protrusion 61 and a second protrusion 62. The second protrusion 62 is fixed to the outer wall of the movable stop 4, preferably by welding, ensuring a firm connection that is not easily detached and can effectively withstand the force during adjustment. The second protrusion 62 is fixed to the outer wall of the second side plate 10. A first threaded rod 63 is screwed through the second protrusion 62. The top end of the first threaded rod 63 is mounted to the lower end face of the first protrusion 61 via a bearing. A handle 64 is installed at the bottom end of the first threaded rod 63. The outer wall of the handle 64 is provided with anti-slip texture, which increases the friction between the operator's hand and the handle 64, making it easier for the operator to manually turn the handle 64 without the need for a handrail. Additional tools are provided for convenient and efficient operation. Two first adjustment components 6 are provided. During adjustment, the operator can simultaneously rotate two handles 64, which drive the first threaded rod 63 to rotate synchronously. Since the first threaded rod 63 is screwed into the second protrusion 62, the first threaded rod 63 will rise and fall vertically during rotation, thereby driving the first protrusion 61 and the movable stop bar 4 to rise and fall synchronously. This allows for precise adjustment of the blocking height of the movable stop bar 4. The movable stop bar 4 can be adjusted to the optimal blocking height according to the size of the corn cob and the thickness of impurities in actual operation, effectively preventing corn leaves, corn husks and other impurities from slipping out from the lower end of the conveyor belt 2, further ensuring the separation effect.

[0027] See Figures 1-5 As shown, the second adjusting component 7 includes an adjusting part and a locking part. The adjusting part is used to drive the conveyor belt 2 to rotate around its lower hinge point, so as to realize the flexible adjustment of the tilt angle to adapt to different needs. The locking part is used to lock and fix the conveyor belt 2 after the tilt angle is adjusted to the correct position, so as to prevent the conveyor belt 2 from shifting its angle due to factors such as material weight during operation, ensuring the continuous and stable operation of the separation operation, and improving the safety and reliability of the device operation.

[0028] See Figures 7-8 As shown, the adjustment part includes a drive motor 71, a gear 72, and a hinge seat 74. The drive motor 71 is a servo motor and is fixedly mounted on the mounting bracket 1. A connecting rod 73 is mounted on the output end of the drive motor 71. Two gears 72 and two hinge seats 74 are provided. The two gears 72 are symmetrically fixed on the outside of the connecting rod 73, and the two hinge seats 74 are symmetrically fixed on the outer wall of the first side plate 3. A rack 75 is hinged on each hinge seat 74. The rack 75 meshes with the gear 72 on the corresponding side. The side of the rack 75 facing away from the convex tooth has multiple grooves 751 evenly spaced along the length direction. The depth of the grooves 751 is 2-6mm, and the spacing is 3-15mm. Their function is to increase the friction on the back of the rack 75, so as to provide a guarantee for the locking and fixing of the subsequent locking part.

[0029] When adjusting the tilt angle of the conveyor belt 2, the drive motor 71 is started. The output end of the drive motor 71 drives the connecting rod 73 to rotate synchronously, which in turn drives the two gears 72 to rotate synchronously. When the gears 72 rotate, they drive the rack 75 that meshes with them to rise and fall. During the rising and falling of the rack 75, the first side plate 3 and the conveyor belt 2 rotate around their lower hinge point. Thus, the tilt angle of the conveyor belt 2 is adjusted according to the actual operation requirements. The adjustment process is highly automated, precise and convenient, and does not require manual adjustment, reducing the labor intensity of operators.

[0030] The locking part includes two limiting plates 76, which are respectively mounted on the connecting rod 73 and corresponding to the rack 75. The limiting plates 76 are thickened hard metal plates, and their surfaces are provided with limiting grooves 77 in the vertical direction for the rack 75 to pass through. This ensures that the rack 75 can move up and down along the limiting grooves 77, and also limits the direction of movement of the rack 75 to prevent deviation during meshing transmission, thus ensuring the stability of the transmission between the gear 72 and the rack 75. A second threaded rod 78 is screwed onto the outer wall of the limiting plate 76. One end of the second threaded rod 78 extends into the limiting groove 77 and abuts against the rack 75. After the tilt angle of the conveyor belt 2 is adjusted to the correct position, the operator manually rotates the second threaded rod 78, causing the inner end of the second threaded rod 78 to be pushed horizontally into the limiting groove 77 until it is tightly pressed against the back of the rack 75 away from the convex tooth. The groove 751 on the back of the rack 75 increases the friction between the inner end of the second threaded rod 78 and the rack 75, effectively restricting the vertical movement of the rack 75 and preventing the rack 75 from shifting due to the gravity of the conveyor belt 2 and the material. This achieves locking and fixing of the conveyor belt 2, ensuring the structural stability of the conveyor belt 2 after the angle is adjusted, and ensuring the continuous and stable operation of the separation.

[0031] Example 2: See Figures 1-5 As shown, in order to further improve the separation effect of the device and avoid problems such as corn not being able to roll off smoothly and impurities not being completely separated, the automatic separation device for corn husk impurities and corn also includes an upper guiding mechanism. The upper guiding mechanism includes at least one baffle plate 5. The baffle plate 5 is installed at an angle above the conveyor belt 2, and the angle of the baffle plate 5 is adapted to the conveying direction of the conveyor belt 2. The upper end face of the baffle plate 5 is a certain distance higher than the upper end face of the conveyor belt 2.

[0032] See Figures 1-3 As shown, the baffle plate 5 is set at an angle of 15°-45° with the upper surface of the conveyor belt 2, and a gap is left between the baffle plate 5 and the upper surface of the conveyor belt 2 for impurities such as corn leaves and corn husks to pass through. The width of the gap is set to 20-30mm, which can ensure that light impurities can pass through smoothly, and prevent small corn cobs from falling out of the gap, thus ensuring the accuracy and integrity of separation.

[0033] In addition, see Figure 1 As shown, the automatic separation device for corn husk impurities and corn also includes a photoelectric detection and blowing mechanism. This mechanism, as an auxiliary separation component, can accurately identify and quickly clean up corn that has not automatically rolled off, ensuring that no corn is missed during the separation process. The photoelectric detection and blowing mechanism specifically includes an air blowing pipe 8 and a diffuse reflection photoelectric sensor 9 installed on the first side plate 3. The opening of the air blowing pipe 8 faces the lower end of the conveyor belt 2, and one end is connected to an external high-pressure air delivery pipe through a connector. The pressure of the high-pressure air can be adjusted according to actual needs to ensure that the blowing force is sufficient and will not damage the corn kernels. The diffuse reflection photoelectric sensor 9 is installed at a height of 30-40mm from the conveyor belt 2 to detect corn that has not rolled off. The air blower 8 blows corn into a pit below the lower end of the conveyor belt without detecting corn leaf impurities. An electromagnetic valve is connected in series with the air blowing pipe 8, and is electrically connected to a diffuse reflection photoelectric sensor 9 to automatically control the blowing action. When a detection signal is received, the electromagnetic valve opens after a designed delay, and high-pressure air is ejected through the air blowing pipe 8, quickly blowing any unfallen corn into the pit below the lower end of the conveyor belt 2. The blowing time lasts approximately 0.5-1 second. The actual blowing time can be adjusted in the PLC program based on the blowing effect, saving high-pressure air consumption and avoiding interference from ineffective blowing, thus achieving intelligent and efficient auxiliary separation.

[0034] As described above, in practical use, the corn material containing impurities such as corn leaves and husks is conveyed to the upper end of conveyor belt 2. Because conveyor belt 2 is arranged at an angle, the corn cobs, due to their relatively large weight (a single corn cob typically weighs 300-500g) and cylindrical shape, overcome the friction on the surface of conveyor belt 2 under the dominant force of gravity, naturally rolling down the inclined surface of conveyor belt 2 and eventually falling into the hopper from the lower end of conveyor belt 2. Meanwhile, the corn leaves and husks, being lightweight and flaky, generate significant static friction when in contact with the rubber belt surface of conveyor belt 2. This friction is greater than the component of the impurities' own weight along the inclined direction of conveyor belt 2, therefore the impurities will... The corn kernels adhere firmly to the surface of the conveyor belt 2 and move synchronously with the direction of travel of the conveyor belt 2 until they are conveyed to the output end of the conveyor belt 2. After being detached from the support of the conveyor belt 2, they fall into the impurity collection mechanism (such as impurity collection box, conveyor belt, etc.) on the side of the device under the action of gravity, thus completing the separation of corn kernels from leaf impurities. This separation method does not require the addition of complex separation components such as rollers and screens. It relies solely on the weight and shape differences between the corn kernels and impurities to achieve separation. It has the advantages of simple structure, low manufacturing cost, and low energy consumption. Moreover, the separation process is gentle. The corn kernels simply roll naturally under the action of gravity and are not subjected to external forces such as squeezing or impact. This effectively avoids problems such as corn kernel breakage and threshing, ensuring the quality of the corn kernels.

[0035] The baffle plate 5 of the upper guiding mechanism can block corn that is perpendicular to the direction of travel of the conveyor belt 2 and cannot roll down automatically due to force balance into an oblique posture, so that it can roll down smoothly along the inclined surface of the conveyor belt 2, ensuring the normal collection of corn. Light impurities such as corn leaves and corn husks can pass smoothly through the gap between the baffle plate 5 and the conveyor belt 2 and continue to move with the conveyor belt 2 to the impurity collection area, further improving the thoroughness of separation and avoiding secondary mixing of impurities and corn.

[0036] The present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have their own emphasis; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the embodiments of the present invention can be adjusted, combined, and deleted according to actual needs, and the structure in the device of the embodiments of the present invention can be combined, divided, and deleted according to actual needs.

[0037] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An automatic separation device for corn husk impurities and corn, comprising a mounting frame (1), characterized in that, The mounting frame (1) is provided with an inclined conveyor belt (2), the upper end of the conveyor belt (2) is fixed with a first side plate (3), the lower end is fixed with a second side plate (10), and the lower end of the conveyor belt (2) is hinged to the mounting frame (1). The system also includes: A movable baffle (4) is provided at the top of the second side plate (10); The first adjusting member (6) is connected between the movable stop bar (4) and the second side plate (10) for adjusting the blocking height of the movable stop bar (4); The second adjustment component (7) is connected between the mounting frame (1) and the first side plate (3), and the tilt angle of the conveyor belt (2) is adjusted by the second adjustment component (7).

2. The automatic separation device for corn husk impurities and corn as described in claim 1, characterized in that, It also includes an upper material guiding mechanism, which includes at least one baffle plate (5), which is obliquely installed above the conveyor belt (2), and the oblique direction of the baffle plate (5) is adapted to the conveying direction of the conveyor belt (2).

3. The automatic separation device for corn husk impurities and corn according to claim 2, characterized in that, The baffle plate (5) is set at an angle of 15°-45° to the upper surface of the conveyor belt (2), and a gap is left between the baffle plate (5) and the upper surface of the conveyor belt (2) for impurities such as corn leaves and corn husks to pass through.

4. The automatic separation device for corn husk impurities and corn according to claim 1, characterized in that, An air blowing pipe (8) and a diffuse reflection photoelectric sensor (9) are installed on the first side plate (3), and a solenoid valve is installed on the air blowing pipe (8).

5. The automatic separation device for corn husk impurities and corn according to claim 4, characterized in that, The first adjustment element (6) includes: The first protrusion (61) is fixed to the outer wall of the movable baffle (4); The second protrusion (62) is fixed to the outer wall of the second side plate (10). A first threaded rod (63) is screwed through the second protrusion (62). The top end of the first threaded rod (63) is mounted on the lower end face of the first protrusion (61) by a bearing.

6. The automatic separation device for corn husk impurities and corn according to claim 5, characterized in that, A handle (64) is installed at the bottom end of the first threaded rod (63), and the outer wall of the handle (64) is provided with anti-slip texture.

7. The automatic separation device for corn husk impurities and corn according to claim 1, characterized in that, The second adjusting member (7) includes an adjusting part and a locking part. The adjusting part is used to drive the conveyor belt (2) to rotate around its lower hinge point to adjust the tilt angle. The locking part is used to lock and fix the conveyor belt (2) after the tilt angle is adjusted to the correct position.

8. The automatic separation device for corn husk impurities and corn according to claim 7, characterized in that, The adjustment unit includes: A drive motor (71) is fixedly mounted on the mounting bracket (1), and a connecting rod (73) is mounted on the output end of the drive motor (71). Two gears (72) are symmetrically fixed to the outside of the connecting rod (73); Two hinge seats (74) are symmetrically fixed on the outer wall of the first side plate (3). Each hinge seat (74) is hinged with a rack (75), and the rack (75) meshes with the gear (72) on the corresponding side.

9. The automatic separation device for corn husk impurities and corn according to claim 8, characterized in that, The locking part includes two limiting plates (76), which are respectively mounted on the connecting rod (73) and corresponding to the rack (75). The limiting plates (76) are provided with limiting grooves (77) for the rack (75) to pass through. The outer wall of the limiting plate (76) is screwed with a second threaded rod (78), one end of which extends into the limiting groove (77) and abuts against the rack (75).

10. The automatic separation device for corn husk impurities and corn according to claim 9, characterized in that, The rack (75) has multiple grooves (751) evenly spaced along its length on the side facing away from the convex teeth.

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