Multi-mode corn screening and impurity removing device

Abstract

The utility model discloses a multi-mode corn screening and impurity removing device which comprises a body, a magnetic plate is fixedly connected in the body, a storage bin is fixedly connected to the top of one side of the body, a sliding groove is formed in the surface of the side, close to the body, of the storage bin, a releasing mechanism used for releasing corn is arranged in the sliding groove, and a screening plate and the magnetic plate are arranged in a matched mode. A plurality of second rotating shafts are rotationally connected to the surface of the side, close to the sieve plate, of the body, knocking mechanisms for knocking the sieve plate are arranged on the surfaces of the second rotating shafts, ventilation openings are formed in the two sides of the body, and dedusting mechanisms for dedusting corn are arranged in the two ventilation openings. Through the arrangement of the magnetic plate, iron in corn can be screened out, after the corn makes contact with the magnetic plate, the corn can move downwards, due to the characteristics of the magnetic plate, when the corn passes through the surface of the magnetic plate, the magnetic plate can adsorb the iron in the corn, and therefore secondary filtering needed in the later period is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of impurity removal devices, in particular to a multi-mode corn screening and impurity removal device. Background Art

[0002] The corn screening and impurity removal device is a device used to remove impurities from corn. During the corn processing process, after the initial cleaning, the corn may still contain some impurities, such as stones, soil, iron, etc. These impurities will affect the quality and processing effect of the corn, so it is necessary to use a corn screening and impurity removal device for further cleaning. After the corn is fed into the device, the corn is screened on the screen through the vibration of the vibration mechanism. Large impurities will be blocked by the screen, while smaller corn particles pass through the screen to the next process. The corn screening and impurity removal device has the advantages of high working efficiency, good cleaning effect, and simple operation. It is widely used in the corn processing industry. It can effectively improve the quality of corn and ensure the smooth progress of the processing process.

[0003] When some existing corn screening and impurity removal devices are used, most of them adopt screens for screening. Although the corn can be screened by using the screen, the screening effect is relatively general, and some fine iron cannot be screened, which leads to the need for secondary screening of the corn in the later stage. Therefore, this problem needs to be solved. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a multi-mode corn screening and impurity removal device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A multi-mode corn screening and impurity removal device comprises a main body, a magnetic plate is fixedly connected inside the main body, the magnetic plate is arranged in an inclined device, two screw rods are rotatably connected to the surface of the main body close to the magnetic plate, the surfaces of the two screw rods are sleeved with the same scraper, the scraper is slidably connected to one side of the main body, and the scraper and the magnetic plate are arranged in cooperation with each other, the ends of the two screw rods away from the main body are sleeved with a first synchronous wheel, the surfaces of the two first synchronous wheels are sleeved with the same first synchronous belt, one of the screw rods is sleeved with a first gear on the surface close to the main body, and the surface of the first gear is provided with a gear for moving the scraper A moving mechanism, a storage bin is fixedly connected to the top of one side of the main body, a slide groove is provided on the surface of the storage bin close to the main body, a releasing mechanism for releasing corn is provided inside the slide groove, a sieve plate is fixedly connected to the inside of the main body, the sieve plate and the magnetic plate are arranged in cooperation with each other, a plurality of second rotating shafts are rotatably connected to the surface of one side of the main body close to the sieve plate, a knocking mechanism for knocking the sieve plates is provided on the surfaces of the plurality of second rotating shafts, ventilation holes are provided on both sides of the main body, a dust removal mechanism for dusting corn is provided inside the two ventilation holes, and the iron in the corn can be screened out by the arrangement of the magnetic plate.

[0007] As a further scheme of the utility model, the moving mechanism includes a T-shaped plate, which is fixedly connected to one side of the main body, and an adjusting plate is sleeved on the surface of the T-shaped plate. A plurality of third teeth are fixedly connected to the surface of the adjusting plate close to the first gear, and the plurality of third teeth cooperate with the first gear. A plurality of fourth teeth are fixedly connected to the surface of the adjusting plate away from the third teeth, and the surfaces of the plurality of fourth teeth cooperate with the same second gear. A first rotating shaft is sleeved on one side of the second gear, and the first rotating shaft is rotatably connected to one side of the main body. A motor is fixedly connected to one end of the first rotating shaft close to the scraper, and the motor is fixedly connected to one side of the main body. The scraper can be moved by setting a screw rod.

[0008] As a further scheme of the utility model, the release mechanism includes a baffle, which is slidably connected to one side of the slide groove, and a discharge port is opened at the top of the baffle near the storage bin, and the discharge port and the storage bin are arranged to cooperate with each other. A plurality of first teeth are fixedly connected to the top of the baffle near the adjusting plate, and the surfaces of the plurality of first teeth are matched with the same tooth roller, and the tooth roller is rotatably connected to the top of the main body, and a second tooth is fixedly connected to the surface of the adjusting plate near the tooth roller, and the plurality of second teeth cooperate with the tooth roller. By setting the discharge port, the corn can be released.

[0009] As a further solution of the utility model, the knocking mechanism includes three rings, each of which is provided with a second rotating shaft surface, and each of the three ring surfaces is installed with three knocking components, and each of the three knocking components cooperates with the magnetic plate. A rotating mechanism for rotating the ring is provided at the end of the second rotating shaft away from the motor, and the magnetic plate can be knocked by setting the knocking component.

[0010] As a further solution of the utility model, the rotating mechanism includes multiple fourth synchronous wheels, and the multiple fourth synchronous wheels are all sleeved on the surface of the second rotating shaft. The surfaces of the multiple fourth synchronous wheels are sleeved with the same second synchronous belt. The surface of one of the second rotating shafts close to the first rotating shaft is sleeved with a third synchronous wheel, and the surface of the first rotating shaft close to the third synchronous wheel is sleeved with a second synchronous wheel. The surfaces of the second synchronous wheel and the third synchronous wheel are sleeved with the same third synchronous belt. The striking assembly can be rotated by setting the second synchronous belt.

[0011] As a further solution of the utility model, the dust removal mechanism includes a filter plate, the filter plate is fixedly connected to one side of the inside of the vent, two fans are fixedly connected to the inside of the vent away from the magnetic plate, a dust suction plate is fixedly connected to the inside of the body close to the vent, the dust suction plate and the fan are arranged to cooperate with each other, one end of the dust suction plate is fixedly connected to a docking pipe, a debris outlet is provided on the surface of the body close to the storage bin, and a collection outlet is provided on the surface of the body away from the debris outlet, and the corn can be dusted by the arrangement of the fan.

[0012] The beneficial effects of the utility model are:

[0013] 1. The iron in the corn can be screened out by setting the magnetic plate. A magnetic plate is installed inside the main body, so that when the corn enters the main body, it will come into contact with the magnetic plate. Because the magnetic plate is set at an angle, when the corn comes into contact with the magnetic plate, it will move downward. Due to the characteristics of the magnetic plate, when the corn passes through its surface, the magnetic plate can adsorb the iron in the corn to avoid the need for secondary filtration later.

[0014] 2. The dust inside the corn can be screened out by setting the fan. Two fans are installed on the side of the main body close to the storage bin. When the corn enters the main body, the fan will start to blow the falling corn so that the dust inside the corn can be separated. A dust suction plate is installed on one side of the fan. The dust can be collected by setting the dust suction plate, thereby avoiding secondary pollution of the flying dust to the corn in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic diagram of the overall structure of a multi-mode corn screening and impurity removal device proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of a multi-mode corn screening and impurity removal device proposed by the utility model;

[0017] Figure 3 A schematic diagram of a dust removal mechanism of a multi-mode corn screening and impurity removal device proposed by the utility model;

[0018] Figure 4 This is a schematic diagram of a moving mechanism of a multi-mode corn screening and impurity removal device proposed by the utility model;

[0019] Figure 5 This is a schematic diagram of a release mechanism of a multi-mode corn screening and impurity removal device proposed by the utility model;

[0020] Figure 6 for Figure 5 A is an enlarged structural diagram;

[0021] Figure 7 A schematic diagram of a knocking mechanism of a multi-mode corn screening and impurity removal device proposed in the utility model;

[0022] Figure 8 for Figure 7 The enlarged structural diagram at B in FIG.

[0023] In the figure: 1, body; 2, scraper; 3, baffle; 4, second synchronous belt; 101, storage bin; 102, chute; 103, vent; 104, filter plate; 105, fan; 106, T-shaped plate; 107, outlet; 108, collection port; 109, dust collecting plate; 110, butt pipe; 111, sieve plate; 201, magnetic plate; 202, screw rod; 203, first gear; 204, first synchronous wheel; 205, first synchronous Step belt; 301, discharge port; 302, first tooth; 303, tooth roller; 304, adjustment plate; 305, second tooth; 306, third tooth; 307, fourth tooth; 308, second gear; 309, first rotating shaft; 310, motor; 401, second synchronous wheel; 402, third synchronous belt; 403, second rotating shaft; 404, collar; 405, knocking assembly; 406, third synchronous wheel; 407, fourth synchronous wheel. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] Reference Figure 1-Figure 8 A multi-mode corn screening and impurity removal device comprises a main body 1, a magnetic plate 201 is fixedly connected inside the main body 1, the magnetic plate 201 is arranged in an inclined device, two screw rods 202 are rotatably connected to the surface of the side of the main body 1 close to the magnetic plate 201, the surfaces of the two screw rods 202 are sleeved with the same scraper 2, the scraper 2 is slidably connected to one side of the main body 1, and the scraper 2 and the magnetic plate 201 are arranged in cooperation with each other, the ends of the two screw rods 202 away from the side of the main body 1 are sleeved with first synchronous wheels 204, the surfaces of the two first synchronous wheels 204 are sleeved with the same first synchronous belt 205, one of the screw rods 202 is sleeved with a first gear 203 on the surface close to the main body 1, and the surface of the first gear 203 is provided with a gear for moving the scraper 2, a storage bin 101 is fixedly connected to the top of one side of the main body 1, a chute 102 is provided on the surface of the storage bin 101 close to the main body 1, a release mechanism for releasing corn is provided inside the chute 102, a sieve plate 111 is fixedly connected inside the main body 1, the sieve plate 111 and the magnetic plate 201 are arranged in cooperation with each other, a plurality of second rotating shafts 403 are rotatably connected to the surface of one side of the main body 1 close to the sieve plate 111, and a knocking mechanism for knocking the sieve plate 111 is provided on the surfaces of the plurality of second rotating shafts 403, vents 103 are provided on both sides of the main body 1, and a dust removal mechanism for dusting corn is provided inside the two vents 103, and the iron in the corn can be screened out by the arrangement of the magnetic plate 201.

[0027] Reference Figure 4 and Figure 5 In a preferred embodiment, the moving mechanism includes a T-shaped plate 106, which is fixedly connected to one side of the body 1. An adjusting plate 304 is sleeved on the surface of the T-shaped plate 106. A plurality of third teeth 306 are fixedly connected to the surface of the adjusting plate 304 close to the first gear 203. The plurality of third teeth 306 cooperate with the first gear 203. A plurality of fourth teeth 307 are fixedly connected to the surface of the adjusting plate 304 away from the third teeth 306. The surfaces of the plurality of fourth teeth 307 cooperate with the same second gear 308. A first rotating shaft 309 is sleeved on one side of the second gear 308. The first rotating shaft 309 is rotatably connected to one side of the body 1. A motor 310 is fixedly connected to one end of the first rotating shaft 309 close to the scraper 2. The motor 310 is fixedly connected to one side of the body 1. The scraper 2 can be moved by setting the screw rod 202.

[0028] Reference Figure 3 and Figure 5In a preferred embodiment, the release mechanism includes a baffle 3, which is slidably connected to one side of the slide groove 102. A discharge port 301 is opened on the top of the baffle 3 close to the storage bin 101. The discharge port 301 and the storage bin 101 are arranged in cooperation with each other. A plurality of first teeth 302 are fixedly connected to the top of the baffle 3 close to the adjusting plate 304. The surfaces of the plurality of first teeth 302 are matched with the same tooth roller 303. The tooth roller 303 is rotatably connected to the top of the main body 1. A second tooth 305 is fixedly connected to the surface of the adjusting plate 304 close to the tooth roller 303. The plurality of second teeth 305 all cooperate with the tooth roller 303. Through the setting of the discharge port 301, the corn can be released.

[0029] Reference Figure 2 and Figure 7 In a preferred embodiment, the knocking mechanism includes three rings 404, each of which is sleeved with a second rotating shaft 403 surface, and each of which is equipped with three knocking components 405. The three knocking components 405 cooperate with the magnetic plate 201, and a rotating mechanism for rotating the rings 404 is provided at the end of the second rotating shaft 403 away from the motor 310. By setting the knocking components 405, the magnetic plate 201 can be knocked.

[0030] Reference Figure 5 , Figure 7 and Figure 8 In a preferred embodiment, the rotating mechanism includes multiple fourth synchronous wheels 407, and the multiple fourth synchronous wheels 407 are all sleeved on the surface of the second rotating shaft 403. The surfaces of the multiple fourth synchronous wheels 407 are sleeved with the same second synchronous belt 4, and the surface of one of the second rotating shafts 403 close to the first rotating shaft 309 is sleeved with a third synchronous wheel 406, and the surface of the first rotating shaft 309 close to the third synchronous wheel 406 is sleeved with a second synchronous wheel 401, and the surfaces of the second synchronous wheel 401 and the third synchronous wheel 406 are sleeved with the same third synchronous belt 402. By setting the second synchronous belt 4, the knocking component 405 can be rotated.

[0031] Reference Figure 2 and Figure 3 In a preferred embodiment, the dust removal mechanism includes a filter plate 104, which is fixedly connected to one side of the vent 103. Two fans 105 are fixedly connected to the inside of the vent 103 away from the magnetic plate 201. A dust suction plate 109 is fixedly connected to the inside of the body 1 close to the vent 103. The dust suction plate 109 and the fan 105 are arranged in cooperation with each other. A docking pipe 110 is fixedly connected to one end of the dust suction plate 109. A debris outlet 107 is provided on the surface of the body 1 close to the storage bin 101, and a collection port 108 is provided on the surface of the body 1 away from the debris outlet 107. The corn can be dusted by the arrangement of the fan 105.

[0032] From the above description, it can be seen that the above-mentioned embodiment of the utility model achieves the following technical effects: before use, first connect the docking pipe 110 to the external dust pump, and then it can be used normally. A storage bin 101 is installed on the top of the main body 1, so that when the corn is removed from the impurities, the corn can be poured into the storage bin 101 so that it can stably enter the main body 1. A magnetic plate 201 is installed inside the main body 1, so that when the corn enters the main body 1, it will contact the magnetic plate 201. Because the magnetic plate 201 is arranged at an angle, when the corn contacts the magnetic plate 201, it will move downward. Due to the characteristics of the magnetic plate 201, when the corn passes through its surface, the magnetic plate 201 can In order to adsorb the iron in the corn, in order to avoid the need for secondary filtration in the later stage, two fans 105 are installed on the side of the main body 1 close to the storage bin 101. When the corn enters the inside of the main body 1, the fan 105 will start up so that it can blow the falling corn so that the dust inside the corn can be separated. A dust collecting plate 109 is installed on one side of the fan 105. Through the setting of the dust collecting plate 109, the dust can be collected, so as to avoid the flying dust from causing secondary pollution to the corn in the later stage. A sieve plate 111 is installed at the bottom of the magnetic plate 201. Because sieve holes are opened on the surface of the sieve plate 111, when the corn falls on the surface of the sieve plate 111, the corn kernels can be screened to filter out some large impurities. When the corn enters to a certain extent, the motor 310 will start accordingly, and a first rotating shaft 309 is installed on the output shaft of the motor 310, and a second gear 308 and a second synchronous wheel 401 are installed on the surface of the first rotating shaft 309, so that when the motor 310 is started, the second gear 308 and the second synchronous wheel 401 will rotate, and a plurality of fourth teeth 307 are matched on the surface of the second gear 308, and the plurality of fourth teeth 307 are all installed on one side of the adjustment plate 304, so that when the second gear 308 rotates, the adjustment plate 304 can be moved up, and a plurality of second teeth 305 and a third tooth 306 are respectively installed on the other side of the adjustment plate 304, and the plurality of second teeth 305 cooperate with the gear roller 303 When the adjusting plate 304 drives the second teeth 305 to move upward, the gear roller 303 can be rotated, and the gear roller 303 cooperates with the first teeth 302 on the surface of the baffle 3, so that when the gear roller 303 rotates, the baffle 3 can move, so that the baffle 3 can block the storage bin 101 to prevent corn from continuing to enter. After the baffle 3 blocks the storage bin 101, multiple third teeth 306 will cooperate with the first gear 203. A scraper 2 is installed on one side of the magnetic plate 201, and the scraper 2 is installed on the surfaces of two screw rods 202, and the first gear 203 is sleeved on the surface of one of the screw rods 202, so that when the third teeth 306 drive the first gear 203 to rotate,One of the screw rods 202 can be rotated, and a first synchronous wheel 204 is installed at the other end of the two screw rods 202, and the surfaces of the two first synchronous wheels 204 are matched with the same first synchronous belt 205, so that when one of the screw rods 202 rotates, the other will also rotate synchronously, so that the scraper 2 can move. Through the movement of the scraper 2, the surface of the magnetic plate 201 can be cleaned to avoid excessive iron adhering to its surface. A plurality of knocking components 405 are installed at the bottom of the screen plate 111, and the plurality of knocking components 405 are The second rotating shaft 403 is sleeved on the surface of the second rotating shaft 403 through the collar 404, and the multiple second rotating shafts 403 are connected through the second synchronous belt 4, and one end of one of the second rotating shafts 403 is sleeved with the third synchronous belt 402, and the other end of the third synchronous belt 402 is sleeved on the surface of the first rotating shaft 309, so that when the motor 310 drives the first rotating shaft 309 to rotate, the second rotating shaft 403 will rotate synchronously, and through the rotation of the second rotating shaft 403, the knocking component 405 can knock on the screen plate 111 to avoid its clogging.

[0033] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A multi-mode corn screening and impurity removal device, comprising a main body (1), characterized in that: A magnetic plate (201) is fixedly connected to the inside of the body (1), and the magnetic plate (201) is arranged in an inclined device. The surface of the body (1) close to the magnetic plate (201) is rotatably connected to two screw rods (202), and the surfaces of the two screw rods (202) are sleeved with the same scraper (2), and the scraper (2) is slidably connected to one side of the body (1), and the scraper (2) and the magnetic plate (201) are arranged in a mutually coordinated manner. The ends of the two screw rods (202) away from the body (1) are sleeved with a first synchronous wheel (204), and the surfaces of the two first synchronous wheels (204) are sleeved with the same first synchronous belt (205), and the surface of one of the screw rods (202) close to the body (1) is sleeved with a first gear (203), and the surface of the first gear (203) is provided with a A moving mechanism of a movable scraper (2), a storage bin (101) is fixedly connected to the top of one side of the body (1), a slide groove (102) is provided on the surface of the storage bin (101) close to the body (1), a release mechanism for releasing corn is provided inside the slide groove (102), a sieve plate (111) is fixedly connected inside the body (1), the sieve plate (111) and the magnetic plate (201) are arranged to cooperate with each other, a plurality of second rotating shafts (403) are rotatably connected to the surface of the body (1) close to the sieve plate (111), and a knocking mechanism for knocking the sieve plate (111) is provided on the surface of the plurality of second rotating shafts (403), and ventilation holes (103) are provided on both sides of the body (1), and dust removal mechanisms for removing dust from corn are provided inside the two ventilation holes (103).

2. The multi-mode corn screening and impurity removal device according to claim 1 is characterized in that: The moving mechanism comprises a T-shaped plate (106), wherein the T-shaped plate (106) is fixedly connected to one side of the body (1), an adjusting plate (304) is sleeved on the surface of the T-shaped plate (106), a plurality of third teeth (306) are fixedly connected to the surface of the adjusting plate (304) on the side close to the first gear (203), the plurality of third teeth (306) are mutually matched with the first gear (203), and a plurality of fourth teeth (307) are fixedly connected to the surface of the adjusting plate (304) on the side away from the third teeth (306).

3. The multi-mode corn screening and impurity removal device according to claim 2 is characterized in that: The surfaces of the plurality of fourth teeth (307) are matched with the same second gear (308); a first rotating shaft (309) is sleeved on one side of the second gear (308); the first rotating shaft (309) is rotatably connected to one side of the body (1); a motor (310) is fixedly connected to one end of the first rotating shaft (309) close to the scraper (2); and the motor (310) is fixedly connected to one side of the body (1).

4. The multi-mode corn screening and impurity removal device according to claim 3 is characterized in that: The release mechanism comprises a baffle (3), the baffle (3) being slidably connected to one side of the slide groove (102), a discharge port (301) being provided at the top of the baffle (3) close to the storage bin (101), the discharge port (301) and the storage bin (101) being arranged in cooperation with each other, a plurality of first teeth (302) being fixedly connected to the top of the baffle (3) close to the adjustment plate (304), the surfaces of the plurality of first teeth (302) being matched with the same toothed roller (303), the toothed roller (303) being rotatably connected to the top of the body (1), a second toothed tooth (305) being fixedly connected to the surface of the adjustment plate (304) close to the toothed roller (303), the plurality of second teeth (305) being matched with the toothed roller (303).

5. The multi-mode corn screening and impurity removal device according to claim 4 is characterized in that: The knocking mechanism comprises three collars (404), each of the three collars (404) being sleeved with a surface of a second rotating shaft (403), each of the three collars (404) being mounted with three knocking components (405), each of the three knocking components (405) being matched with a magnetic plate (201), and a rotating mechanism for rotating the collar (404) being provided at an end of the second rotating shaft (403) away from the motor (310).

6. The multi-mode corn screening and impurity removal device according to claim 5 is characterized in that: The rotating mechanism comprises a plurality of fourth synchronous wheels (407), the plurality of fourth synchronous wheels (407) are all sleeved on the surface of the second rotating shaft (403), the surfaces of the plurality of fourth synchronous wheels (407) are sleeved with the same second synchronous belt (4), the surface of one of the second rotating shafts (403) close to the first rotating shaft (309) is sleeved with a third synchronous wheel (406), the surface of the first rotating shaft (309) close to the third synchronous wheel (406) is sleeved with a second synchronous wheel (401), and the surfaces of the second synchronous wheel (401) and the third synchronous wheel (406) are sleeved with the same third synchronous belt (402).

7. The multi-mode corn screening and impurity removal device according to claim 6 is characterized in that: The dust removal mechanism comprises a filter plate (104), the filter plate (104) being fixedly connected to one side of the interior of the ventilation port (103), two fans (105) being fixedly connected to the interior of the ventilation port (103) away from the magnetic plate (201), a dust collecting plate (109) being fixedly connected to the interior of the body (1) on the side close to the ventilation port (103), the dust collecting plate (109) and the fans (105) being arranged in cooperation with each other, one end of the dust collecting plate (109) being fixedly connected to a butt joint pipe (110), a debris outlet (107) being provided on the surface of the body (1) on the side close to the storage bin (101), and a collection port (108) being provided on the surface of the body (1) on the side away from the debris outlet (107).

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