Corncob removing device

Abstract

The invention discloses a corncob removing device which comprises a separating box, a separating plate is fixed in the separating box, a net-shaped V-shaped plate is fixed to the separating plate and the separating box, a driving shaft is arranged on the separating plate, a first spiral blade, a dispersing rod and a second spiral blade are sequentially arranged on the driving shaft, a flow guide cover is fixed to the V-shaped plate, and a first spiral blade and a second spiral blade are sequentially arranged on the flow guide cover. The first spiral blade, the dispersing rod and the second spiral blade are covered with the flow guide cover, an extrusion conveying channel is formed between the flow guide cover and the V-shaped plate, a transmission cavity is formed between the isolation plate and the separation box, and a motor is installed on the separation box. The problem that traditional drum screen equipment cannot thoroughly remove impurities similar to corn in particle size and physical property is solved, forced separation of corn and corncobs is achieved, and the corn impurity removal precision is improved; meanwhile, the dust raising phenomenon on the working site is reduced through the dustproof design, the working environment is improved, and the health of operators is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of corn processing technology, and more particularly to a device for removing corn cobs. Background Technology

[0002] In the corn processing industry, raw material impurity removal is a crucial preliminary process to ensure the accuracy of subsequent processing and improve product quality. The effectiveness of removing corn cobs and various impurities directly affects production efficiency and finished product quality. Currently, the mainstream equipment for corn impurity removal in the industry is still the drum screen equipment. This type of equipment is widely used in the initial processing of corn due to its advantages such as simple structure, convenient operation, low manufacturing and maintenance costs, adaptability to small and medium-sized processing scenarios, and corn raw materials with different moisture contents.

[0003] The working principle of the drum screen equipment is based on the combined effect of centrifugal force and gravity. The uniform rotation of the drum drives the corn raw material to tumble, so that the corn kernels that meet the particle size requirements pass through the screen to complete the grading and screening. At the same time, it separates impurities such as stones and straw that are significantly larger than corn kernels, as well as dust and debris that are too small. In the basic impurity removal operation, it provides relatively clean raw materials for subsequent processing and plays an indispensable role.

[0004] However, as the corn deep-processing industry continues to demand higher purity of raw materials, many shortcomings of existing drum screen equipment in practical applications have become increasingly apparent. The impurity removal effect is no longer sufficient to meet the needs of high-precision processing. The most prominent problem is the inability to completely remove impurities similar in size and physical properties to corn kernels, especially small, crushed corn cobs. These corn cobs are mostly broken fragments generated during pre-processing or transportation. Their particle size and specific gravity are very similar to those of whole corn kernels. During the drum screen's rotation, they easily move synchronously with the corn kernels and pass through the screen together, making effective separation impossible and thus interfering with subsequent grinding and milling processes.

[0005] Furthermore, some corn raw materials still retain some residue after harvesting and drying, even after being separated from the cob. Existing drum screens can only classify particles and impurities, but cannot forcibly separate corn from the cob. This results in such raw materials directly entering subsequent processes, affecting product purity. Simultaneously, dust and broken impurities carried by the corn raw materials are stirred up during the screening process. Existing equipment lacks effective dust control design, leading to severe dust pollution on-site, which not only pollutes the working environment but also poses a potential threat to the health of operators.

[0006] In response to the problems of incomplete impurity removal, inability to separate uncoated corn, and severe dust generation in the aforementioned cylindrical screen equipment, this application proposes a corn cob removal device, which aims to overcome the technical shortcomings of existing equipment, improve the accuracy of corn impurity removal and the environmental friendliness of the operation, and meet the industry's high-precision processing needs. Summary of the Invention

[0007] The purpose of this invention is to solve the above-mentioned technical problems by providing a device for removing corn cobs.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A corn cob removal device includes a separation box, an isolation plate fixed inside the separation box, a mesh V-shaped plate fixed on the isolation plate and the separation box, a drive shaft on the isolation plate, a first spiral blade, a dispersing rod and a second spiral blade arranged sequentially on the drive shaft, a flow guide shroud fixed on the V-shaped plate, the flow guide shroud covering the outside of the first spiral blade, the dispersing rod and the second spiral blade, and forming a compression conveying channel between the flow guide shroud and the V-shaped plate.

[0010] Preferably, a transmission chamber is formed between the isolation plate and the separation box, a motor is installed on the separation box, the drive shaft passes through the isolation plate and the separation box and is rotatably connected to them, and the output end of the motor is fixedly connected to the drive shaft.

[0011] Preferably, the inner wall of the separation box is fixed with a conveying cover, the conveying cover is fixed on a V-shaped plate and covers the outside of the second spiral blade, the separation box is equipped with a screw conveyor communicating with the conveying cover, the screw conveyor is equipped with a discharge pipe, and the discharge pipe is located above the separation box.

[0012] Preferably, it also includes a feeding structure, which includes a baffle fixed on the V-shaped plate and the flow guide, forming a feeding port between the baffle and the isolation plate, and a cover plate connected to the separation box by a hinge, the cover plate being arranged opposite to the feeding port and sealing the feeding port.

[0013] Preferably, one end of the flow guide is fixedly connected to the baffle, and the other end of the flow guide does not abut against the conveying cover.

[0014] Preferably, it further includes a dispersing mechanism, which includes a rotating shaft that passes through and is rotatably connected to the partition plate. A plurality of stirring rods are fixed on the rotating shaft. The stirring rods are located inside the feed inlet. First transmission wheels are fixed on the drive shaft and the rotating shaft located in the transmission chamber. Two first transmission wheels are connected by a first transmission belt.

[0015] Preferably, a short shaft is rotatably connected to the inner wall of the separation box, the short shaft is located in the transmission chamber, a circular plate is fixed on the short shaft, a piston cylinder located in the transmission chamber is fixed to the inner wall of the separation box, a movable piston is slidably connected inside the piston cylinder, a connecting rod is hinged to the movable piston, the connecting rod is eccentrically hinged to the circular plate, an air supply pipe is fixed on the piston cylinder, and an air blowing pipe is inclinedly arranged on the screw conveyor, the air supply pipe is connected to the air blowing pipe.

[0016] Preferably, a second transmission wheel is fixedly connected to both the short shaft and the rotating shaft, and the two second transmission wheels are connected by a second transmission belt.

[0017] Preferably, an exhaust check valve is installed on the air supply pipe, which only allows air to flow into the air supply pipe through the piston cylinder.

[0018] Preferably, an air inlet pipe is installed on the piston cylinder, and an air inlet check valve is installed on the air inlet pipe, which only allows air to enter the piston cylinder through the air inlet pipe.

[0019] Compared with the prior art, the beneficial effects of this invention are as follows: Improve impurity removal accuracy: 1. This invention effectively solves the problem that existing drum screen equipment cannot completely remove impurities that are similar in size and physical properties to corn kernels by combining the design of the first spiral blade, the dispersing rod and the second spiral blade; through the squeezing and dispersing action, the corn kernels are fully separated from the corn cob, which significantly improves the impurity removal accuracy.

[0020] 2. In response to the situation where some corn raw materials are not completely separated from the corn cob after harvesting and drying, this invention uses buoyancy to make empty corn kernels and separated corn cobs float on the water surface, while the better quality corn kernels fall to the bottom of the V-shaped plate, thus achieving forced separation of corn and corn cob and ensuring the purity of raw materials.

[0021] 3. This invention takes dust prevention into account in its design. By separating corn kernels from corn cobs in water, it effectively reduces the phenomenon of dust and broken impurities carried by corn raw materials being stirred up by the rotation of the drum during the screening process, thereby improving the working environment and protecting the health of operators.

[0022] 4. The device simultaneously separates the corn cobs and cleans the corn kernels, eliminating the need for a separate subsequent cleaning step and simplifying the processing flow. Furthermore, the piston cylinder and screw conveyor work together to dehydrate the cleaned corn kernels, reducing their moisture content and facilitating subsequent processing.

[0023] 5. This invention uses a motor drive, with transmission belts to achieve synchronous operation of all components, improving work efficiency. Simultaneously, the device has a rational structural design, with all components working collaboratively to achieve integrated automatic operation of corn impurity removal, washing, and dehydration, reducing the need for manual intervention.

[0024] In summary, this invention solves the problem that traditional drum screen equipment cannot completely remove impurities with similar particle size and physical properties to corn, achieving forced separation of corn and corn cob, and improving the accuracy of corn impurity removal. At the same time, the dustproof design reduces dust at the work site, improves the working environment, and protects the health of operators. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a corn cob removal device proposed in this invention; Figure 2 This is a rear view of a corn cob removal device proposed in this invention; Figure 3 This is a top view of a corn cob removal device proposed in this invention; Figure 4 This is a side cross-sectional view of a corn cob removal device proposed in this invention; Figure 5 This is a front sectional view of a corn cob removal device proposed in this invention; Figure 6 This is a schematic diagram of the structure of the first and second spiral blades in a corn cob removal device proposed in this invention; Figure 7 This is a schematic diagram of the structure of the stirring rod in a corn cob removal device proposed in this invention; Figure 8 This is a schematic diagram of the split structure of the piston cylinder in a corn cob removal device proposed in this invention.

[0026] In the diagram: 1 Separation box, 2 Baffle, 3 Isolation plate, 4 Air supply pipe, 5 Cover plate, 6 Screw conveyor, 7 Discharge pipe, 8 Motor, 9 Support block, 10 Drain pipe, 11 V-shaped plate, 12 Air blowing pipe, 13 Rotating shaft, 14 Stirring rod, 15 Drive shaft, 16 First spiral blade, 17 Second spiral blade, 18 Guide shroud, 19 Inlet, 20 Conveying shroud, 21 Transmission chamber, 22 Piston cylinder, 23 First transmission belt, 24 Second transmission belt, 25 Dispersing rod, 26 Short shaft, 27 First transmission wheel, 28 Second transmission wheel, 29 Circular plate, 30 Connecting rod, 31 Moving piston, 32 Air outlet check valve, 33 Air inlet pipe, 34 Air inlet check valve. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Reference Figures 1-8A device for removing corn cobs includes a separation box 1, which serves as the main body of the device. The separation box 1 is welded from steel plates to ensure overall structural strength to withstand the forces exerted during the extrusion and separation process. An isolation plate 3 is fixedly installed inside the separation box 1, perpendicular to the inner wall of the separation box 1. The isolation plate 3 forms a closed transmission chamber 21 with one side wall of the separation box 1, accommodating a first transmission wheel 27 and a second transmission wheel 28. The isolation plate 3 is sealed to the separation box 1, and a rubber ring can be placed between them to ensure a tight seal.

[0029] The bottom of the separation box 1 is fixed with support blocks 9. There are four support blocks 9 distributed in a rectangular shape at the bottom of the separation box 1. The support blocks 9 can stably support the separation box 1. A drain pipe 10 is installed at the bottom of the separation box 1. A valve is installed on the drain pipe 10. Opening the valve can drain the water in the separation box 1.

[0030] A mesh V-shaped plate 11 is fixedly installed between the other side of the isolation plate 3 (the side facing away from the motor 8) and the inner wall of the separation box 1. The mesh size of the V-shaped plate 11 is smaller than that of the corn kernels to prevent the corn kernels from falling through the mesh V-shaped plate 11. At the same time, it can let the dust in the corn kernels fall through the V-shaped plate 11, separating the dust from the corn kernels. The bottom of the V-shaped plate 11 is arc-shaped and its lower end does not abut against the inner bottom of the separation box 1.

[0031] One end of the drive shaft 15, which extends into the separator 1, is sequentially fixed with a first spiral blade 16, a dispersing rod 25, and a second spiral blade 17, all of which rotate coaxially with the drive shaft 15. The spiral directions of the first spiral blade 16 and the second spiral blade 17 are the same. The dispersing rod 25 is located between the first spiral blade 16 and the second spiral blade 17, and is composed of multiple metal rods radially fixed to the drive shaft 15. It is used to break up the corn that has been initially squeezed by the first spiral blade 16, so that the corn is fully separated from the corn cob and the corn cob is prevented from being wrapped by the corn kernels and unable to detach.

[0032] A flow guide shroud 18 is fixedly installed on the V-shaped plate 11. The flow guide shroud 18 has an arc-shaped structure, which forms a cylindrical shape with the bottom of the V-shaped plate 11 and covers the outside of the first spiral blade 16, the dispersing rod 25 and the second spiral blade 17. A closed extrusion conveying channel is formed between the flow guide shroud 18 and the mesh surface of the V-shaped plate 11.

[0033] A motor 8 is fixedly installed on the outer wall of the separator 1 at the position corresponding to the transmission chamber 21. The motor 8 is a variable frequency geared motor, and the output speed can be adjusted according to the corn processing volume.

[0034] Specifically, the drive shaft 15 rotates, causing the first spiral blade 16, the dispersing rod 25, and the second spiral blade 17 to rotate. The rotation of the first spiral blade 16, in conjunction with the flow guide 18, can convey the corn. When the corn is conveyed into the flow guide 18, it will compress the corn kernels and corn cobs. Under the condition that the corn kernels and corn cobs are compressed, the corn kernels still on the corn cobs can be detached, thus separating the two. When the corn kernels and corn cobs are conveyed to the dispersing rod 25, the dispersing rod 25 can stir and disperse the corn kernels and corn cobs.

[0035] The drive shaft 15 horizontally penetrates the side wall of the isolation plate 3 and the separation box 1, and is rotatably connected to the isolation plate 3 and the separation box 1 through bearings. The bearings adopt a sealed structure to prevent dust in the transmission chamber 21 from entering and affecting the rotation accuracy. The output end of the motor 8 is fixedly connected to one end of the drive shaft 15 through a coupling to ensure stable power transmission.

[0036] The rotating shaft 13 is set parallel to the drive shaft 15, passes through the isolation plate 3 and is rotatably connected to it through bearings. The rotating shaft 13 is located at the position corresponding to the feed inlet 19, and multiple stirring rods 14 are fixedly installed on its outer surface. The stirring rods 14 are radially distributed and used to disperse the corn at the feed inlet 19. Specifically, the motor 8 drives the drive shaft 15 to rotate, the drive shaft 15 rotates, and the first transmission wheel 27 rotates. When the first transmission wheel 27 rotates, it is driven by the first transmission belt 23 to realize the rotation of the rotating shaft 13. The rotation of the rotating shaft 13 drives the multiple stirring rods 14 to rotate. The rotation of the stirring rods 14 can stir and disperse the corn in the feed inlet 19 to avoid corn accumulation and blockage.

[0037] First transmission wheels 27 are fixedly mounted on both the drive shaft 15 and the rotating shaft 13 in the transmission chamber 21. The two first transmission wheels 27 are of the same specification and are synchronously transmitted through the first transmission belt 23, so that the rotating shaft 13 rotates synchronously with the drive shaft 15.

[0038] The short shaft 26 is also located in the transmission chamber 21, and its two ends are rotatably connected to the inner wall of the separation box 1 through bearings. A circular plate 29 is fixedly mounted on the short shaft 26, and the center of the circular plate 29 coincides with the short shaft 26. A piston cylinder 22 is fixedly installed on the inner wall of the separation box 1 at the position corresponding to the circular plate 29. The piston cylinder 22 is horizontally set, and a movable piston 31 is slidably connected inside it. The movable piston 31 and the circular plate 29 are eccentrically hinged by a connecting rod 30, that is, one end of the connecting rod 30 is hinged to the edge of the circular plate 29, and the other end is hinged to the movable piston 31. Second transmission wheels 28 are fixedly mounted on both the short shaft 26 and the rotating shaft 13. The two second transmission wheels 28 are connected by a second transmission belt 24 to realize the synchronous rotation of the short shaft 26 and the rotating shaft 13, thereby driving the movable piston 31 to perform reciprocating linear motion in the piston cylinder 22.

[0039] To ensure unidirectional airflow, an inlet pipe 33 and an outlet pipe 4 are installed on the piston cylinder 22. An inlet check valve 34 is installed on the inlet pipe 33, allowing only external air to enter the piston cylinder 22 through the inlet pipe 33. An outlet check valve 32 is installed on the outlet pipe 4, allowing only the air inside the piston cylinder 22 to be discharged through the outlet pipe 4. The other end of the outlet pipe 4 is connected to the air blowing pipe 12 on the screw conveyor 6. The air blowing pipe 12 is inclined downwards (away from the discharge pipe 7), that is, towards the feed end of the screw conveyor 6, so that compressed air can be blown along the screw conveying direction to reduce the moisture in the corn kernels.

[0040] A conveying cover 20 is fixedly installed on the inner wall of the separation box 1 at the position corresponding to the second spiral blade 17. The conveying cover 20 is connected to the guide cover 18 and covers the outside of the second spiral blade 17 to form a closed discharge channel. The other end of the guide cover 18 does not abut against the conveying cover 20, so that the corn cob can move upward by buoyancy. A screw conveyor 6 is installed on the outside of the separation box 1. The feed end of the screw conveyor 6 is connected to the discharge port of the conveying cover 20. A discharge pipe 7 is installed at its discharge end. The discharge pipe 7 extends to the top of the separation box 1 to prevent water from being discharged through the discharge pipe 7. The discharge pipe 7 is used to discharge the separated corn cob from the device.

[0041] Baffle 2 is vertically fixed to V-shaped plate 11 and guide shroud 18 to form a feeding structure. The upper end of baffle 2 is lower than the upper end of isolation plate 3, and the water level is higher than baffle 2 but lower than isolation plate 3, so that the corn cobs float on the water surface and are not blocked by baffle 2. A feeding port 19 is formed between baffle 2 and isolation plate 3. The width of feeding port 19 is set according to the corn processing volume to ensure that the corn can enter the extrusion conveying channel evenly. The top of the separation box 1 is connected to cover plate 5 by hinge. The size of cover plate 5 matches that of feeding port 19 and can rotate around the hinge to open and close feeding port 19. When closed, it can seal feeding port 19 to prevent dust generated during feeding from overflowing and also prevent foreign objects from entering the device.

[0042] One end of the flow guide shroud 18 is fixedly connected to the baffle 2 to ensure the sealing of the feed inlet 19, so that all the corn can enter the extrusion conveying channel and avoid leakage from the gaps.

[0043] When using this invention, inject an appropriate amount of water into the separation box 1, ensuring that the water covers the upper end of the baffle 2 but does not exceed the height of the isolation plate 3; then, the worker pours the corn whose cobs need to be separated into the feed inlet 19 and starts the motor 8 at the same time; The motor 8 drives the drive shaft 15 to rotate, which in turn drives the first transmission wheel 27 to rotate. When the first transmission wheel 27 rotates, it drives the first transmission belt 23 to rotate the rotating shaft 13. The rotating shaft 13 drives multiple stirring rods 14 to rotate. The rotation of the stirring rods 14 can stir and disperse the corn in the feed inlet 19 to prevent the corn from accumulating and clogging. At the same time, it can separate the corn from the corn cob. Due to buoyancy, some empty corn kernels and corn cobs will float on the water surface, while the better quality corn kernels will fall to the bottom of the V-shaped plate 11.

[0044] The drive shaft 15 rotates, causing the first spiral blade 16, the dispersing rod 25, and the second spiral blade 17 to rotate. The rotation of the first spiral blade 16, in conjunction with the flow guide 18, can convey the corn. When the corn is conveyed into the flow guide 18, it will compress the corn kernels and corn cobs. Under the condition that the corn kernels and corn cobs are compressed, the corn kernels still on the corn cobs can be detached, thus separating the two. When the corn kernels and corn cobs are conveyed to the dispersing rod 25, the dispersing rod 25 can stir and disperse the corn kernels and corn cobs. As the corn kernels and corn cobs are conveyed, they move to the second spiral blade 17. With the help of the guide shroud 18, the corn kernels and corn cobs can be squeezed again. This squeezing is after the dispersion and stirring by the dispersing rod 25, which can further separate the corn kernels from the corn cobs. When the corn kernels and corn cobs are conveyed between the guide hood 18 and the conveyor hood 20, the corn cobs float back to the water surface due to buoyancy, thus separating the corn kernels and corn cobs and cleaning the corn at the same time. This eliminates the need for subsequent cleaning of the corn and reduces the number of processing steps.

[0045] As the second spiral blade 17 rotates, in conjunction with the conveyor hood 20, the corn can be conveyed to the screw conveyor 6. The screw conveyor 6 can then discharge the corn through the discharge pipe 7. When the corn is conveyed by the screw conveyor 6, the water on the corn will detach from the corn due to gravity, but some water will still remain on the corn. Therefore, it is necessary to clean the water on the surface of the corn.

[0046] When the rotating shaft 13 rotates, it drives the second transmission wheel 28 to rotate. Under the transmission of the second transmission belt 24, the short shaft 26 rotates. The rotation of the short shaft 26 drives the circular plate 29 to rotate. The rotation of the circular plate 29 drives the connecting rod 30 to move. The movement of the connecting rod 30 drives the moving piston 31 to move. When the moving piston 31 moves close to the circular plate 29, external air enters the piston cylinder 22 through the air inlet pipe 33. When the moving piston 31 moves away from the circular plate 29, the external air is discharged through the air delivery pipe 4 and finally blown onto the conveyed corn kernels through the air blowing pipe 12. This dehydrates the corn kernels, resulting in less moisture in the corn kernels discharged through the discharge pipe 7 for subsequent processing. In this way, corn kernels can be continuously added into the feed inlet 19, achieving separation of corn kernels from corn cobs while also cleaning the corn kernels.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for removing corn cobs, comprising a separation chamber (1), characterized in that, The separation box (1) is fixed with an isolation plate (3), and a mesh V-shaped plate (11) is fixed on the isolation plate (3) and the separation box (1). The isolation plate (3) is provided with a drive shaft (15), and the drive shaft (15) is provided with a first spiral blade (16), a dispersing rod (25) and a second spiral blade (17) in sequence. The V-shaped plate (11) is fixed with a flow guide (18), which covers the outside of the first spiral blade (16), the dispersing rod (25) and the second spiral blade (17), and forms a compression conveying channel with the V-shaped plate (11).

2. The corn cob removal device according to claim 1, characterized in that, A transmission chamber (21) is formed between the isolation plate (3) and the separation box (1). A motor (8) is installed on the separation box (1). The drive shaft (15) passes through the isolation plate (3) and the separation box (1) and is rotatably connected to them. The output end of the motor (8) is fixedly connected to the drive shaft (15).

3. The corn cob removal device according to claim 2, characterized in that, The inner wall of the separation box (1) is fixed with a conveying cover (20), which is fixed on the V-shaped plate (11) and covers the outside of the second spiral blade (17). The separation box (1) is equipped with a screw conveyor (6) that communicates with the conveying cover (20). The screw conveyor (6) is equipped with a discharge pipe (7) which is located above the separation box (1).

4. The corn cob removal device according to claim 3, characterized in that, It also includes a feeding structure, which includes a baffle (2) fixed on a V-shaped plate (11) and a flow guide (18). A feeding port (19) is formed between the baffle (2) and the isolation plate (3). The separation box (1) is connected to a cover plate (5) by a hinge. The cover plate (5) is arranged opposite to the feeding port (19) and covers the feeding port (19).

5. The corn cob removal device according to claim 4, characterized in that, One end of the flow guide (18) is fixedly connected to the baffle (2), and the other end of the flow guide (18) does not abut against the conveyor cover (20).

6. The corn cob removal device according to claim 4, characterized in that, It also includes a dispersing mechanism, which includes a rotating shaft (13) that passes through and is rotatably connected to the isolation plate (3). Multiple stirring rods (14) are fixed on the rotating shaft (13). The stirring rods (14) are located inside the feed inlet (19). First transmission wheels (27) are fixed on the drive shaft (15) and the rotating shaft (13) located in the transmission chamber (21). Two first transmission wheels (27) are connected by a first transmission belt (23).

7. A corn cob removal device according to claim 6, characterized in that, The inner wall of the separation box (1) is rotatably connected to a short shaft (26), which is located in the transmission chamber (21). A circular plate (29) is fixed on the short shaft (26). A piston cylinder (22) located in the transmission chamber (21) is fixed on the inner wall of the separation box (1). A movable piston (31) is slidably connected in the piston cylinder (22). A connecting rod (30) is hinged on the movable piston (31). The connecting rod (30) is eccentrically hinged to the circular plate (29). An air supply pipe (4) is fixed on the piston cylinder (22). An air blowing pipe (12) is inclinedly arranged on the screw conveyor (6). The air supply pipe (4) is connected to the air blowing pipe (12).

8. The corn cob removal device according to claim 7, characterized in that, The short shaft (26) and the rotating shaft (13) are both fixedly connected with second transmission wheels (28), and the two second transmission wheels (28) are connected by a second transmission belt (24).

9. A corn cob removal device according to claim 7, characterized in that, An exhaust check valve (32) is installed on the air supply pipe (4), which only allows air to flow through the piston cylinder (22) into the air supply pipe (4).

10. A corn cob removal device according to claim 7, characterized in that, An air inlet pipe (33) is installed on the piston cylinder (22), and an air inlet check valve (34) is installed on the air inlet pipe (33). The air inlet check valve (34) only allows air to enter the piston cylinder (22) through the air inlet pipe (33).

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