A corncob extracting and impurity removing device

Abstract

The utility model belongs to the technical field of corn cob extraction, especially relates to a corn cob extraction and impurity removal device, including the casing, is equipped with the feed inlet, the discharge port and the discharge port on the casing, and the feed inlet is fixedly installed with the feedwell, still include: the impurity removal passageway, the impurity removal passageway is slidably installed in the casing, and the both ends of impurity removal passageway are communicated with the feed inlet and the discharge port respectively, be equipped with a plurality of first impact strips and a plurality of residue filter groove in the impurity removal passageway, the side of feed inlet and be located on the fixed mounting of the impurity removal passageway solid plate, the bottom of solid plate is fixedly installed with a plurality of baffle, the side of discharge port and be located on the rotary mounting of the impurity removal passageway swing plate, guide plate, the guide plate is fixedly installed in the bottom of the impurity removal passageway and is located in the side of discharge port, and the one end of guide plate extends into the discharge port, this device has the advantages of high -efficient impurity removal efficiency and high -quality impurity removal effect, simultaneously, this device can be without using screw rod to the high -efficient impurity removal of corn cob, and it is not easy to break down.

Description

Technical Field

[0001] This utility model belongs to the field of corn cob extraction technology, and in particular relates to a corn cob extraction and impurity removal device. Background Technology

[0002] Corn cob is the central axial structure remaining after corn kernels are threshed. It is composed of lignified fibrous tissue, cylindrical in shape, and its surface is covered with pits left by the detached kernels. Once considered agricultural waste, it has now become a high-value resource due to its unique composition and properties, and is widely used in industry, environmental protection, medicine, and other fields.

[0003] Prior art (publication number: CN217851245U) discloses a dust removal device for corn cob extraction, relating to the field of dust removal equipment technology. This dust removal device for corn cob extraction includes a body, a guide plate fixedly installed on the inner wall of the body, a dust outlet on the left outer wall of the body, a separation chamber on the right inner wall of the body, and a corn cob outlet on the right outer wall of the body. A separation mechanism is installed inside the body. To improve the efficiency of removing dust or other debris from the surface of the corn cob, this dust removal device incorporates a separation mechanism, which, in conjunction with a drive gear and a driven gear, drives a rotating drum to rotate at a relatively low speed. Simultaneously, a return spring, a contact slide rod, and a contact ball cause the rotating shaft to move up and down continuously during rotation. A blade plate further enhances the efficiency of impacting the corn cob. A fan discharges waste debris into a guide door, thereby improving the dust removal efficiency of the corn cob.

[0004] The aforementioned patent has the following problems: This patent has some drawbacks in its use. For example, the reciprocating cleaning component inside the machine removes impurities by moving the screw back and forth on the corn cob. However, the screw is a relatively precise mechanical mechanism that requires lubrication and sealing. Since the screw inside the machine is exposed to the air, it cannot be sealed and lubricated, and the screw itself cannot be guaranteed to perform its function. Therefore, the reciprocating cleaning component will get stuck because dust adheres to the screw, which not only fails to clean effectively but also affects the normal discharge of the corn cob, resulting in low impurity removal efficiency and quality of the device.

[0005] In view of this, we propose a corn cob extraction and impurity removal device. Utility Model Content

[0006] The purpose of this invention is to provide a corn cob extraction and impurity removal device to solve the problems mentioned in the background art.

[0007] In view of this, the present invention provides a corn cob extraction and impurity removal device, including a housing, wherein the housing is provided with a feed inlet, a discharge outlet and a slag discharge outlet, and a feed hopper is fixedly installed at the feed inlet, and further comprising: The impurity removal channel is slidably installed inside the machine housing, and its two ends are respectively connected to the feed inlet and the discharge outlet. The impurity removal channel is provided with several first collision strips and several filter tanks. A fixed plate is fixedly installed on one side of the feed inlet and on the impurity removal channel. Several baffles are fixedly installed on the bottom of the fixed plate. A swing plate is rotatably installed on one side of the discharge outlet and on the impurity removal channel. A guide plate is fixedly installed at the bottom of the impurity removal channel and located on one side of the slag discharge port, with one end of the guide plate extending into the slag discharge port. The air duct is fixedly installed on one side of the machine housing and located directly below the feed hopper. The air duct is equipped with a fan, a protective net, and several filters. A rotating shaft is rotatably mounted on the inner wall of the housing, and two power blocks that are in contact with the bottom of the impurity removal channel are fixedly mounted on the rotating shaft. A power assembly, located on the housing, is used to drive the fan and the shaft to rotate.

[0008] In this technical solution, the power unit can push the impurity removal channel, which simultaneously drives the first collision bar, fixed plate, baffle, swing plate, second collision bar, and guide plate to move vertically upward within the machine casing. After one end of the power unit moves away from the bottom of the impurity removal channel, the channel automatically moves the first collision bar, fixed plate, baffle, swing plate, second collision bar, and guide plate downward vertically within the machine casing to reset. Simultaneously, the impurity removal channel contacts the rubber head on the support plate. Then, personnel pour the batch of corn cobs requiring impurity removal into the feed hopper and turn on the first motor. The corn cobs pass through the dust curtain at the feed inlet and enter the impurity removal channel. The corn cobs move up and down with the reciprocating motion of the channel, and the batch of corn cobs vibrates synchronously within the channel and contacts the baffle, thereby using vibration to shake off debris from the outer wall of the corn cobs. Simultaneously, the output of the first motor drives the fan to rotate, and the rotating fan draws dust from inside the machine casing into the air duct, ensuring a negative pressure is created inside the machine casing. Outside air can enter the machine casing through the feed inlet, discharge outlet, and slag discharge outlet, preventing dust from being discharged to the outside. The air drawn in contains dust and is filtered through several layers of filters. The dust is retained at the bottom of the inner wall of the air duct, while the air discharged from one end of the air duct is dust-free, ensuring environmental protection. The corn cob debris is separated from the corn cob in the inner cavity of the impurity removal channel. The debris then passes through several slag filter grooves and falls onto the guide plate. Finally, the debris moves along the top of the guide plate to the slag discharge outlet for discharge. The corn cob in the impurity removal channel contacts the baffle and moves downward to the bottom of the swing plate, where it contacts the swing plate and the second collision bar. The swing plate swings up and down with the reciprocating motion of the impurity removal channel. After the impurity removal channel resets, the swing plate also resets, so that one end of the swing plate contacts the inner cavity of the impurity removal channel. When the swing plate rotates, the corn cob passes through the bottom of the swing plate and the second collision bar, and then moves to the discharge plate and is discharged through the discharge outlet.

[0009] In the above technical solution, the power component further includes: The first motor is fixed to the inner wall of the air duct by a bracket, and the output end of the first motor is coaxially connected to the fan. The second motor is fixedly installed on one side of the housing, and the output shaft of the second motor passes through one side of the housing and is coaxially connected to the rotating shaft.

[0010] In this technical solution, the first motor can stably drive the fan to rotate in the air duct to draw air, ensuring that a negative pressure is formed inside the casing. Outside air can enter the casing through the feed inlet, discharge outlet and slag outlet to prevent dust from being discharged to the outside. The second motor can stably drive the rotating shaft and power block to rotate continuously, and then the power block pushes the impurity removal channel to move up and down inside the casing.

[0011] In the above technical solution, further, both ends of the bracket are fixed to the first motor and the inner wall of the air duct by bolts, the fan is located between the first motor and the protective net, the first motor is located between several filters and the fan, and the outside of the first motor is equipped with a dustproof shell, several filters are fixed to the inner wall of the air duct by screws, and the mesh size of the protective net is 0.5-0.8cm.

[0012] In this technical solution, the bracket, the first motor, and the fan can all be removed from the air duct for easy maintenance. Several filters can be removed from the air duct with screws for easy cleaning. The dustproof housing on the outside of the second motor can prevent dust from entering the internal electrical components of the second motor.

[0013] In the above technical solution, furthermore, two support plates are fixedly installed on both sides of the inner wall of the housing, and the two support plates are respectively located below the two ends of the impurity removal channel. Several rubber heads are fixedly installed on the top of the support plates.

[0014] In this technical solution, when the power block contacts the bottom of the impurity removal channel and then rotates half a turn, the impurity removal channel will drop by 1-3cm. At the same time, the bottom of both ends of the impurity removal channel will contact the top of the rubber head. The rubber head will reduce the impact force when the impurity removal channel slides down, and prevent the bottom of the impurity removal channel from deforming due to the large impact force, thereby improving the service life of the impurity removal channel.

[0015] In the above technical solution, a discharge plate is further fixedly installed at the tail end of the impurity removal channel. One end of the discharge plate extends from the discharge port to the outside and is slidably connected to the discharge port. The guide plate is slidably connected to the slag discharge port and the machine casing.

[0016] In this technical solution, the discharge plate will always be located inside the discharge port so that the corn cobs in the impurity removal channel can be discharged from the discharge port at a fixed point, and the guide plate can stably discharge the removed debris from the slag discharge port.

[0017] In the above technical solution, the rotation angle of the swing plate is 5-15°, one side of the swing plate is in contact with one side of the fixed plate, and the distance between the other side of the swing plate and the inner wall of the casing is 3-5cm. Several second collision strips are fixedly installed at the bottom of the swing plate, and the several second collision strips are distributed at equal intervals.

[0018] In this technical solution, the swing plate can only swing upward within the impurity removal channel. The swing plate can automatically contact each corn cob passing below, thereby preventing debris from passing through the gap between the swing plate and the corn cob and being discharged from the discharge port. The second collision bar can contact the corn cob, thereby slowing down the speed of the corn cob when it passes through the swing plate, thus increasing the residence time of the corn cob in the impurity removal channel and improving the quality of removing debris from the corn cob.

[0019] In the above technical solution, the size of the filter cake tank is 1-1.5cm.

[0020] In this technical solution, corn cobs will be mixed with debris when stacked. The debris is usually composed of debris that falls off the end of the corn cob. The debris can be effectively filtered by using a filter trough.

[0021] In the above technical solution, both the feed inlet and the discharge outlet are equipped with dustproof curtains.

[0022] In this technical solution, the dust curtain can effectively prevent most of the dust inside the machine casing from leaking from the feed inlet and discharge outlet, thus avoiding affecting the health of personnel.

[0023] The beneficial effects of this utility model are: 1. This corn cob extraction and impurity removal device uses a rotating shaft and power block inside the casing to drive the impurity removal channel, first collision bar, fixed plate, baffle, swing plate, and guide plate. This causes the corn cob entering the casing to continuously reciprocate and contact the first collision bar, baffle, and second collision bar, thereby shaking off and removing the debris from the outside of the corn cob. The entire process only requires the corn cob to enter from one end of the impurity removal channel and exit from the other end. Furthermore, the power block and the impurity removal channel can maintain stable contact and cooperation, allowing the corn cob to be stably discharged from the discharge port after impurity removal. Therefore, this device has the advantages of high efficiency and high-quality impurity removal effect. At the same time, this device can efficiently remove impurities from corn cobs without the need for a screw, making it less prone to malfunction.

[0024] 2. This corn cob extraction and impurity removal device uses several rubber heads set above the support plate. When the rubber heads come into contact with the bottom of the impurity removal channel, the rubber heads will reduce the impact force when the impurity removal channel slides down, thus preventing the bottom of the impurity removal channel from deforming due to the large impact force, thereby improving the service life of the impurity removal channel. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a perspective view of the interior of the casing of this utility model; Figure 3 This is a schematic diagram of the internal structure of the casing of this utility model; Figure 4 This is an exploded view of the fixed plate and the swing plate of this utility model; Figure 5 This is a bottom view of the cross-section of the impurity removal channel of this utility model; Figure 6 This is a cross-sectional view of the duct of this utility model.

[0026] The markings in the diagram are as follows: 10. Housing; 11. Shaft; 12. Power block; 13. Impurity removal channel; 14. Filter tank; 15. First collision bar; 16. Fixed plate; 17. Baffle; 18. Swing plate; 19. Second collision bar; 21. Guide plate; 22. Support plate; 23. Air duct; 24. Fan; 25. Filter screen. Detailed Implementation

[0027] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail.

[0028] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0029] Example 1: This example provides a corn cob extraction and impurity removal device, including a housing 10, which has an inlet, a outlet, and a slag outlet. A feed hopper is fixedly installed at the inlet. The device also includes: The impurity removal channel 13 is slidably installed inside the housing 10, and both ends of the impurity removal channel 13 are connected to the feed inlet and the discharge outlet respectively. The impurity removal channel 13 is provided with a number of first collision strips 15 and a number of filter tanks 14. A fixed plate 16 is fixedly installed on one side of the feed inlet and on the impurity removal channel 13. A number of baffles 17 are fixedly installed at the bottom of the fixed plate 16. A swing plate 18 is rotatably installed on one side of the discharge outlet and on the impurity removal channel 13. Guide plate 21 is fixedly installed at the bottom of the impurity removal channel 13 and located on one side of the slag discharge port, with one end of guide plate 21 extending into the slag discharge port; The air duct 23 is fixedly installed on one side of the housing 10 and located directly below the feed hopper. The air duct 23 is equipped with a fan 24, a protective net, and several filter screens 25. A rotating shaft 11 is rotatably mounted on the inner wall of the housing 10, and two power blocks 12 are fixedly mounted on the rotating shaft 11 to contact the bottom of the impurity removal channel 13; The power unit is located on the housing 10 and is used to drive the fan 24 and the shaft 11 to rotate.

[0030] It is worth noting that the pore size of the filter screen 25 is 1-3μm, which allows the filter screen 25 to effectively filter the dust inside the housing 10 and prevent the dust from affecting the health of personnel.

[0031] The power unit can push the impurity removal channel 13, which in turn drives the first collision bar 15, the fixed plate 16, the baffle 17, the swing plate 18, the second collision bar 19, and the guide plate 21 to move vertically upward within the housing 10. After one end of the power block 12 moves away from the bottom of the impurity removal channel 13, the impurity removal channel 13 automatically drives the first collision bar 15, the fixed plate 16, the baffle 17, the swing plate 18, the second collision bar 19, and the guide plate 21 to move vertically downward and reset within the housing 10. Simultaneously, the impurity removal channel 13 and the support plate 22... After the rubber head contacts the feed hopper, the personnel pour the batch of corn cobs to be cleaned into the feed hopper, and then turn on the first motor. The corn cobs will pass through the dust curtain at the feed inlet and enter the cleaning channel 13. The corn cobs will move up and down with the reciprocating movement of the cleaning channel 13. The batch of corn cobs will shake synchronously in the cleaning channel 13 and contact the baffle 17, thereby using vibration to shake off the debris on the outer wall of the corn cobs. At the same time, the output end of the first motor will drive the fan 24 to rotate. The rotating fan 24 will suck the dust in the machine casing 10 into the air duct 23 to ensure that the dust in the machine casing 10 is clean. A negative pressure will be created, allowing outside air to enter the casing 10 through the feed inlet, discharge outlet, and slag outlet, preventing dust from escaping to the outside. The air being drawn in, containing dust, will pass through several layers of filters 25, retaining the dust at the bottom of the inner wall of the air duct 23. The air discharged from one end of the air duct 23 will be dust-free, ensuring environmental protection. The corn cob debris will separate from the corn cob in the inner cavity of the impurity removal channel 13, then pass through several slag filter grooves 14 and fall onto the guide plate 21. Finally, the debris will flow along the guide plate 21. The top moves to the slag discharge port and is discharged. The corn cob in the impurity removal channel 13 will contact the baffle 17 and move down to the bottom of the swing plate 18 and contact the swing plate 18 and the second collision bar 19. The swing plate 18 will swing up and down with the reciprocating movement of the impurity removal channel 13. The swing plate 18 will also reset after the impurity removal channel 13 resets, so that one end of the swing plate 18 contacts the inner cavity of the impurity removal channel 13. When the swing plate 18 rotates, the corn cob will pass through the bottom of the swing plate 18 and the second collision bar 19, and then move to the discharge plate and be discharged through the discharge port.

[0032] The power assembly inside the housing 10 drives the impurity removal channel 13, the first collision bar 15, the fixed plate 16, the baffle 17, the swing plate 18, and the guide plate 21, thereby removing the debris from the outside of the corn cob by continuously shaking the corn cob back and forth and contacting it with the first collision bar 15, the baffle 17, and the second collision bar 19.

[0033] Example 2: This example provides a corn cob extraction and impurity removal device. In addition to the technical solutions of the above examples, it also has the following technical features, including a power component: The first motor is fixed to the inner wall of the air duct 23 by a bracket, and the output end of the first motor is coaxially connected to the fan 24. The second motor is fixedly installed on one side of the housing 10, and the output shaft of the second motor passes through one side of the housing 10 and is coaxially connected to the rotating shaft 11.

[0034] The first motor can stably drive the fan 24 to rotate and draw air in the air duct 23, ensuring that a negative pressure is formed inside the casing 10. Outside air can enter the casing 10 through the feed inlet, discharge outlet and slag outlet, preventing dust from being discharged to the outside. The second motor can stably drive the rotating shaft 11 and the power block 12 to rotate continuously, and then the power block 12 pushes the impurity removal channel 13 to move up and down inside the casing 10.

[0035] Example 3: This example provides a corn cob extraction and impurity removal device. In addition to the technical solutions of the above examples, it also has the following technical features: both ends of the support are fixed to the first motor and the inner wall of the air duct 23 by bolts; the fan 24 is located between the first motor and the protective net; the first motor is located between several filter screens 25 and the fan 24; and the first motor is equipped with a dustproof shell; several filter screens 25 are fixed to the inner wall of the air duct 23 by screws; and the mesh size of the protective net is 0.5-0.8cm.

[0036] The bracket, the first motor, and the fan 24 can all be removed from the air duct 23 for easy maintenance. Several filters 25 can be removed from the air duct 23 with screws for easy cleaning. The dustproof housing on the outside of the second motor can prevent dust from entering the internal electrical components of the second motor.

[0037] Example 4: This example provides a corn cob extraction and impurity removal device. In addition to the technical solutions of the above examples, it also has the following technical features: two support plates 22 are fixedly installed on both sides of the inner wall of the housing 10. The two support plates 22 are located below the two ends of the impurity removal channel 13, and several rubber heads are fixedly installed on the top of the support plates 22.

[0038] When the power block 12 contacts the bottom of the impurity removal channel 13 and rotates half a turn, the impurity removal channel 13 will fall by 1-3cm. At the same time, the bottom of both ends of the impurity removal channel 13 will contact the top of the rubber head. The rubber head will reduce the impact force when the impurity removal channel 13 slides down, and prevent the bottom of the impurity removal channel 13 from deforming due to the large impact force, so as to improve the service life of the impurity removal channel 13.

[0039] Example 5: This example provides a corn cob extraction and impurity removal device. In addition to the technical solutions of the above examples, it also has the following technical features: a discharge plate is fixedly installed at the tail end of the impurity removal channel 13. One end of the discharge plate extends from the discharge port to the outside and is slidably connected to the discharge port. The guide plate 21 is slidably connected to the slag discharge port and the casing 10.

[0040] The discharge plate will always be located inside the discharge port so that the corn cobs in the impurity removal channel 13 can be discharged from the discharge port at a fixed point, and the guide plate 21 can stably discharge the removed debris from the slag discharge port.

[0041] Example 6: This example provides a corn cob extraction and impurity removal device. In addition to the technical solutions of the above examples, it also has the following technical features: the rotation angle of the swing plate 18 is 5-15°, one side of the swing plate 18 is in contact with one side of the fixed plate 16, and the distance between the other side of the swing plate 18 and the inner wall of the housing 10 is 3-5cm. Several second collision strips 19 are fixedly installed at the bottom of the swing plate 18, and the several second collision strips 19 are evenly distributed.

[0042] The swing plate 18 can only swing upward within the impurity removal channel 13. The swing plate 18 can automatically contact each corn cob passing below, thereby preventing debris from passing through the gap between the swing plate 18 and the corn cob and being discharged from the discharge port. The second collision bar 19 can contact the corn cob, thereby slowing down the speed of the corn cob when it passes through the swing plate 18, thereby increasing the residence time of the corn cob in the impurity removal channel 13 and improving the quality of corn cob debris removal.

[0043] Example 7: This example provides a corn cob extraction and impurity removal device. In addition to the technical solutions of the above examples, it also has the following technical features: the size of the filter tank 14 is 1-1.5cm.

[0044] When corn cobs are stacked, they may contain debris. This debris is usually composed of fragments that have fallen off the ends of the corn cobs. The debris can be effectively filtered using the filter trough 14.

[0045] Example 8: This example provides a corn cob extraction and impurity removal device. In addition to the technical solutions of the above examples, it also has the following technical features: dust curtains are installed at both the feed inlet and the discharge outlet.

[0046] Among them, the dust curtain can effectively prevent most of the dust inside the casing 10 from leaking from the feed inlet and discharge outlet, thus affecting the health of personnel.

[0047] Working principle: First, the operator turns on the second motor. The output of the second motor drives the rotating shaft 11 to rotate, which in turn drives the power block 12 to rotate. With each rotation, the power block 12 pushes against the impurity removal channel 13 and moves upwards. Simultaneously, the impurity removal channel 13 drives the first collision bar 15, the fixed plate 16, the baffle 17, the swing plate 18, the second collision bar 19, and the guide plate 21 to move vertically upwards within the housing 10. After one end of the power block 12 moves away from the bottom of the impurity removal channel 13, the impurity removal channel 13 automatically drives the first collision bar 15, the fixed plate 16, the baffle 17, and the swing plate 18 within the housing 10. 8. The second collision bar 19 and guide plate 21 move vertically downwards to reset, and at the same time, the impurity removal channel 13 contacts the rubber head on the support plate 22. Then, the personnel pour the batch of corn cobs to be impurized into the feed hopper, and then turn on the first motor. The corn cobs will pass through the dust curtain at the feed inlet and enter the impurity removal channel 13. The corn cobs will move up and down with the reciprocating movement of the impurity removal channel 13. The batch of corn cobs will shake synchronously in the impurity removal channel 13 and contact the baffle 17, thereby using vibration to shake off the debris on the outer wall of the corn cobs. At the same time, the output end of the first motor will drive the fan 24 to rotate. The rotating fan 24 will shake the casing 10. Dust inside the casing 10 is drawn into the duct 23, ensuring a negative pressure inside the casing 10. Outside air enters the casing 10 through the feed inlet, discharge outlet, and slag outlet, preventing dust from escaping. The drawn-in air, containing dust, passes through several filters 25, retaining the dust at the bottom of the inner wall of the duct 23. Air discharged from one end of the duct 23 is dust-free, ensuring environmental protection. Corn cob debris separates from the corn cob within the impurity removal channel 13. The debris then passes through several slag filter grooves 14 and falls onto the guide plate 21. Finally, the debris is discharged along the guide plate... The top of plate 21 moves to the slag discharge port and is discharged. The corn cob in the impurity removal channel 13 will contact the baffle 17 and move down to the bottom of the swing plate 18 and contact the swing plate 18 and the second collision bar 19. The swing plate 18 will swing up and down with the reciprocating movement of the impurity removal channel 13. The swing plate 18 will also reset after the impurity removal channel 13 resets, so that one end of the swing plate 18 contacts the inner cavity of the impurity removal channel 13. When the swing plate 18 rotates, the corn cob will pass through the bottom of the swing plate 18 and the second collision bar 19, and then move to the discharge plate and be discharged through the discharge port. At this point, the removal of the slag on the outside of the corn cob is completed.

[0048] 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 corn cob extraction and impurity removal device, comprising a housing (10), wherein the housing (10) is provided with a feed inlet, a discharge outlet and a slag discharge outlet, and a feed hopper is fixedly installed at the feed inlet, characterized in that, Also includes: The impurity removal channel (13) is slidably installed inside the housing (10), and the two ends of the impurity removal channel (13) are respectively connected to the feed inlet and the discharge outlet. The impurity removal channel (13) is provided with a number of first collision strips (15) and a number of filter slag tanks (14). A fixed plate (16) is fixedly installed on one side of the feed inlet and on the impurity removal channel (13). A number of baffles (17) are fixedly installed at the bottom of the fixed plate (16). A swing plate (18) is rotatably installed on one side of the discharge outlet and on the impurity removal channel (13). Guide plate (21), the guide plate (21) is fixedly installed at the bottom of the impurity removal channel (13) and located on one side of the slag discharge port, and one end of the guide plate (21) extends into the slag discharge port; Air duct (23), the air duct (23) is fixedly installed on one side of the housing (10) and located directly below the feed hopper. The air duct (23) is equipped with a fan (24), a protective net and several filters (25). A rotating shaft (11) is rotatably mounted on the inner wall of the housing (10), and two power blocks (12) that are in contact with the bottom of the impurity removal channel (13) are fixedly mounted on the rotating shaft (11). A power assembly located on the housing (10) and used to drive the fan (24) and the shaft (11) to rotate.

2. The corn cob extraction and impurity removal device according to claim 1, characterized in that, The power assembly includes: The first motor is fixed to the inner wall of the air duct (23) by a bracket, and the output end of the first motor is coaxially connected to the fan (24); The second motor is fixedly installed on one side of the housing (10), and the output shaft of the second motor passes through one side of the housing (10) and is coaxially connected to the rotating shaft (11).

3. The corn cob extraction and impurity removal device according to claim 2, characterized in that, Both ends of the bracket are fixed to the first motor and the inner wall of the air duct (23) by bolts. The fan (24) is located between the first motor and the protective net. The first motor is located between several filters (25) and the fan (24). The first motor is equipped with a dustproof shell. Several filters (25) are fixed to the inner wall of the air duct (23) by screws. The mesh diameter of the protective net is 0.5-0.8cm.

4. The corn cob extraction and impurity removal device according to claim 1, characterized in that, Support plates (22) are fixedly installed on both sides of the inner wall of the housing (10). The two support plates (22) are located below the two ends of the impurity removal channel (13). Several rubber heads are fixedly installed on the top of the support plates (22).

5. The corn cob extraction and impurity removal device according to claim 1, characterized in that, The tail end of the impurity removal channel (13) is fixedly installed with a discharge plate. One end of the discharge plate extends through the discharge port to the outside. The discharge plate is slidably connected to the discharge port. The guide plate (21) is slidably connected to the slag discharge port and the machine casing (10).

6. The corn cob extraction and impurity removal device according to claim 1, characterized in that, The rotation angle of the swing plate (18) is 5-15°. One side of the swing plate (18) is in contact with one side of the fixed plate (16), and the distance between the other side of the swing plate (18) and the inner wall of the casing (10) is 3-5cm. Several second collision strips (19) are fixedly installed at the bottom of the swing plate (18), and the several second collision strips (19) are evenly distributed.

7. The corn cob extraction and impurity removal device according to claim 1, characterized in that, The width of the filter residue tank (14) is 1-1.5cm.

8. The corn cob extraction and impurity removal device according to claim 1, characterized in that, Both the feed inlet and the discharge outlet are equipped with dust curtains.

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