A wind screen type corn seed cleaning machine with double screen box function

Abstract

The present invention discloses a wind screen type corn seed cleaning machine with a double screen box function, comprising a base and a second belt, a fixing frame is arranged on the top of the base, and a feed pipe is arranged on the left side of the fixing frame, a first motor is arranged below the feed pipe, and the first motor is rotatably connected to a first motor shaft, the first motor shaft is rotatably connected to a spiral transmission group, and the spiral transmission group is rotatably connected to an auger, the auger is arranged in the feed pipe, and the left side of the left bottom of the feed pipe is connected to a feed port, the top of the feed pipe is connected to a discharge pipe, and a grid is arranged in the discharge pipe. The wind screen type corn seed cleaning machine with a double screen box function is provided with a grid, a first filter screen, a second filter screen, a third filter screen, a first fan, a movable bracket and a second fan, and corn seeds are thoroughly cleaned by pre-screening, wind screen cleaning and vibration cleaning, and the cleaning efficiency is maintained while the screening amount is improved, and the use is more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of corn seed processing, in particular to a wind screen type corn seed cleaning machine with a double screen box function. Background Art

[0002] In the production and processing of corn seeds, it is often necessary to remove fine sand, gravel, stems and leaves mixed in the corn seeds. Since the specific gravity of fine sand, gravel, stems and leaves is different from that of corn seeds, a wind screen type corn seed cleaner is needed.

[0003] The existing corn seed cleaning machine has a simple structure and usually uses a screen to remove fine sand and gravel mixed in the corn seeds. Impurities with a larger surface area such as stems and leaves cannot pass through the filter. In addition, the traditional corn seed cleaning machine has a small number of internal screens and a short cleaning time during the cleaning process, which affects the filtration quality and is not convenient to use. In view of the above problems, it is necessary to improve the existing equipment. Summary of the invention

[0004] The object of the present invention is to provide a wind screen type corn seed cleaner with a double screen box function, so as to solve the problem raised by the above background technology that the existing corn seed cleaners on the market have a simple structure, usually use a screen to remove fine sand and gravel mixed in the corn seeds, while impurities with a larger surface area such as stems and leaves cannot pass through the filter, and the traditional corn seed cleaner has a small number of internal screens, and the cleaning time is short during the cleaning process, thus affecting the filtration quality.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wind screen type corn seed cleaning machine with a double screen box function, comprising a base and a second belt, a fixing frame is arranged on the top of the base, and a feed pipe is arranged on the left side of the fixing frame, a first motor is arranged below the feed pipe, and the first motor is rotatably connected to a first motor shaft, the first motor shaft is rotatably connected to a spiral transmission group, and the spiral transmission group is rotatably connected to an auger, the auger is arranged in the feed pipe, and the left side of the left bottom of the feed pipe is connected to the feed port, the top of the feed pipe is connected to the discharge pipe, and a grid is arranged in the discharge pipe, and the discharge pipe An air inlet is arranged on the left side of the bottom, and the right side of the bottom of the discharge pipe is connected to the light impurity feed pipe, the bottom of the right end of the light impurity feed pipe is connected to the first light impurity discharge pipe, and the bottom of the first light impurity discharge pipe is connected to the right side of the top of the first storage box, a first filter is arranged on the right side inside the light impurity feed pipe, and a first fan is arranged on the right side of the light impurity feed pipe, the bottom of the discharge pipe is connected to the first screen box, and a first screen is arranged in the first screen box, the right side of the bottom of the first screen box is connected to the second light impurity discharge pipe, and the second light impurity discharge pipe is connected to the left side of the top of the first storage box, and the first screen box is arranged on the left side of the bottom A discharge port, and the bottom of the first discharge port is connected to the left side of the top of the second screen box, a second screen is arranged in the second screen box, and the left side of the second screen is connected to the left inner wall of the second screen box through a spring, the right side of the second screen is rotatably connected to a movable bracket, and the lower end of the left side of the movable bracket is rotatably connected to the third screen, the left side of the third screen is rotatably connected to a connecting rod, and the left side of the connecting rod is connected to the left inner wall of the second screen box through a spring, and a baffle is arranged on the right side of the third screen, the right side of the movable bracket is rotatably connected to the first roller, a second discharge port is arranged on the left side of the bottom of the second screen box, and the bottom of the second discharge port It is connected to a material storage box, and the right side of the bottom of the second screen box is connected to a second storage box. A second filter is arranged in the second storage box, and the second filter is connected to a second fan. The first roller is rotatably connected to a first belt, and the right side of the first belt is rotatably connected to an eccentric wheel, a rotating shaft is rotatably connected in the eccentric wheel, a second roller is rotatably connected to the rotating shaft, and a second motor is arranged on the left side of the rotating shaft, the second motor is rotatably connected to a second motor shaft, and the second motor shaft is rotatably connected to a third roller, the left end of the second belt is rotatably connected to the third roller, and the right end of the second belt is rotatably connected to the second roller.

[0006] Preferably, the interior of the grille is a void structure, and the spacing between the voids is greater than the diameter of a RMB 1-yuan coin.

[0007] Preferably, the center point of the first filter screen is on the same horizontal straight line as the center point of the light impurity feed pipe.

[0008] Preferably, two first screens are provided, both of which are inclined, and the left side of the upper first screen is connected to the left inner wall of the first screen box, while the right side of the lower first screen is connected to the right inner wall of the first screen box.

[0009] Preferably, the surfaces of the first, second and third sieves are all mesh structures, and the gaps of the mesh structure on the surface of the first sieve are smaller than the gaps of the mesh structure on the surface of the second sieve, and the gaps of the mesh structure on the surface of the second sieve are smaller than the gaps of the mesh structure on the surface of the third sieve.

[0010] Preferably, the top of the second screen box is a mesh structure.

[0011] Preferably, the second screen, the third screen and the movable bracket are connected by rotation.

[0012] Preferably, the second screen and the third screen form a telescopic mechanism with a spring, and the telescopic distance of the telescopic mechanism is smaller than the initial length of the spring.

[0013] Preferably, the top of the baffle is located at a level higher than the right side of the bottom of the second screen.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the wind screen type corn seed cleaner with double screen box function is provided with.

[0015] (1) A grille, an air inlet, a light impurity feed pipe, a first light impurity discharge pipe, a first impurity storage box, a first filter screen and a first fan are provided. The grille is provided above the air inlet. After passing through the grille, the corn seeds become loose, and the impurities with a large area and light weight such as stems and leaves mixed in the corn seeds are separated from the corn seeds. The first fan drives air to enter from the air inlet and drives the light impurities such as stems and leaves into the light impurity feed pipe, and finally is blocked by the first filter screen and falls into the first impurity storage box through the first light impurity discharge pipe for storage. The corn seeds are pre-screened before being cleaned, thereby improving the subsequent corn seed cleaning efficiency;

[0016] (2) A first screen, a second screen and a third screen are provided, and the surface mesh diameters of the first screen, the second screen box and the third screen are increased gradually, so that the corn seeds are screened three times, and the impurities mixed in the corn seeds are screened to the greatest extent, thereby improving the screening quality;

[0017] (3) A first screen box, a second screen box, a first screen, a second screen, a third screen, a spring, a movable bracket, a connecting rod and an eccentric wheel are provided. Two first screens are provided, and the two first screens are fixedly provided. The second screen and the third screen are connected to the movable bracket and the spring. The rotation of the eccentric wheel drives the second screen and the third screen to shake, thereby improving the screening efficiency of corn seeds;

[0018] (4) A second impurity storage box and a second fan are provided. The second fan drives air from the mesh structure on the top of the second screen box into the second screen box and passes through the mesh structure on the surface of the second screen and the third screen to drive impurities to pass through the second screen and the third screen faster, thereby further improving the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view structural schematic diagram of the present invention;

[0020] Figure 2 The present invention is a Figure 1 A schematic diagram of the top view of the second screen;

[0021] Figure 3 The present invention is a Figure 1 A schematic diagram of the front view structure of the grille;

[0022] Figure 4 The present invention is a Figure 1 A schematic diagram of the grille structure from a top view;

[0023] Figure 5 The present invention is a Figure 1 A schematic diagram of the top view of the structure of the first belt;

[0024] Figure 6 The present invention is a Figure 1 A schematic diagram of the front structure of the movable bracket;

[0025] Figure 7 The present invention is a Figure 1 A is the enlarged structural diagram.

[0026] In the figure: 1, base, 2, fixing frame, 3, feeding pipe, 4, first motor, 5, first motor shaft, 6, screw transmission group, 7, auger, 8, feed port, 9, discharge pipe, 10, grille, 11, air inlet, 12, light impurity feed pipe, 13, first light impurity discharge pipe, 14, first impurity storage box, 15, first filter screen, 16, first fan, 17, first screen box, 18, first screen screen, 19, second light impurity discharge pipe, 20, first discharge port, 21, first Second screen box, 22, second screen, 23, spring, 24, movable bracket, 25, third screen, 26, connecting rod, 27, baffle, 28, first roller, 29, second discharge port, 30, storage box, 31, second storage box, 32, second filter, 33, second fan, 34, first belt, 35, eccentric wheel, 36, rotating shaft, 37, second roller, 38, second motor, 39, second motor shaft, 40, third roller, 41, second belt. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-7The present invention provides a technical solution: a wind screen type corn seed cleaning machine with a double screen box function, comprising a base 1, a fixing frame 2, a feeding pipe 3, a first motor 4, a first motor shaft 5, a spiral transmission group 6, an auger 7, a feeding port 8, a discharging pipe 9, a grille 10, an air inlet 11, a light impurity feeding pipe 12, a first light impurity discharging pipe 13, a first impurity storage box 14, a first filter 15, a first fan 16, a first screen box 17, a first screen 18, a second light impurity discharging pipe 19, a first discharging port 20, a second screen box 21, a second screen 22, a spring 23, a movable bracket 24, a third screen 25, a connecting rod 26, a baffle 27, a first roller 28, a second discharging port 29, a storage box 30, a second impurity storage box 31, and a second filter 32. , a second fan 33, a first belt 34, an eccentric wheel 35, a rotating shaft 36, a second roller 37, a second motor 38, a second motor shaft 39, a third roller 40 and a second belt 41, a fixing frame 2 is arranged on the top of the base 1, and a feeding pipe 3 is arranged on the left side of the fixing frame 2, a first motor 4 is arranged below the feeding pipe 3, and the first motor 4 is rotatably connected to the first motor shaft 5, the first motor shaft 5 is rotatably connected to the spiral transmission group 6, and the spiral transmission group 6 is rotatably connected to the auger 7, the auger 7 is arranged in the feeding pipe 3, and the left side of the left bottom of the feeding pipe 3 is connected to the feeding port 8, the top of the feeding pipe 3 is connected to the discharging pipe 9, and a grille 10 is arranged in the discharging pipe 9, an air inlet 11 is arranged on the left side of the bottom of the discharging pipe 9, and the right side of the bottom of the discharging pipe 9 is connected to the light impurities The feed pipe 12 is connected, the bottom of the right end of the light impurity feed pipe 12 is connected to the first light impurity discharge pipe 13, and the bottom of the first light impurity discharge pipe 13 is connected to the right side of the top of the first storage box 14, a first filter screen 15 is arranged on the right side of the inside of the light impurity feed pipe 12, and a first fan 16 is arranged on the right side of the light impurity feed pipe 12, the bottom of the discharge pipe 9 is connected to the first screen box 17, and the first screen box 17 is provided with a first screen 18, the right side of the bottom of the first screen box 17 is connected to the second light impurity discharge pipe 19, and the second light impurity discharge pipe 19 is connected to the left side of the top of the first storage box 14, a first discharge port 20 is arranged on the left side of the bottom of the first screen box 17, and the bottom of the first discharge port 20 is connected to the left side of the top of the second screen box 21, and the second screen box 21 is provided with a second The second screen 22 is connected to the left inner wall of the second screen box 21 by a spring 23 on the left side, the second screen 22 is rotatably connected to the right side with a movable bracket 24, and the lower left end of the movable bracket 24 is rotatably connected to the third screen 25, the third screen 25 is rotatably connected to the left side with a connecting rod 26, and the left side of the connecting rod 26 is connected to the left inner wall of the second screen box 21 by a spring 23, and a baffle 27 is provided on the right side of the third screen 25, and a first roller 28 is rotatably connected to the right side of the movable bracket 24, a second discharge port 29 is provided on the left side of the bottom of the second screen box 21, and the bottom of the second discharge port 29 is connected to a storage box 30, and the right side of the bottom of the second screen box 21 is connected to a second storage box 31, and a second filter 32 is provided in the second storage box 31,The second filter screen 32 is connected to the second fan 33, the first roller 28 is rotatably connected to the first belt 34, and the first belt 34 is rotatably connected to the eccentric wheel 35 on the right side, the eccentric wheel 35 is rotatably connected to the rotating shaft 36, the rotating shaft 36 is rotatably connected to the second roller 37, and the rotating shaft 36 is provided with a second motor 38 on the left side of the rotating shaft 36, the second motor 38 is rotatably connected to the second motor shaft 39, and the second motor shaft 39 is rotatably connected to the third roller 40, the left end of the second belt 41 is rotatably connected to the third roller 40, and the right end of the second belt 41 is rotatably connected to the second roller 37.

[0029] The interior of the grille 10 of this example is a void structure, and the spacing of the voids is greater than the diameter of a one-yuan coin. After passing through the grille 10, the corn seeds will be in a loose state, which is convenient for subsequent cleaning work.

[0030] The center point of the first filter 15 is on the same horizontal straight line as the center point of the light impurity feed pipe 12, which facilitates the formation of a stable air duct in the light impurity feed pipe 12, allowing impurities with larger surface area and lighter mass mixed in the corn seeds to quickly enter the light impurity feed pipe 12.

[0031] There are two first sieves 18, both of which are inclined, and the left side of the upper first sieve 18 is connected to the left inner wall of the first screen box 17, while the right side of the lower first sieve 18 is connected to the right inner wall of the first screen box 17. The corn seeds naturally roll downward from the left side of the top of the first sieve 18 on the inclined surface of the first sieve 18. During the rolling process, smaller impurities in the corn seeds pass through the mesh structure on the surface of the first sieve 18 and fall into the bottom of the first screen box 17 and enter the second light impurity discharge pipe 19, so as to perform secondary screening on the corn seeds.

[0032] The surfaces of the first sieve 18, the second sieve 22 and the third sieve 25 are all mesh structures, and the gaps of the mesh structure on the surface of the first sieve 18 are smaller than the gaps of the mesh structure on the surface of the second sieve 22. At the same time, the gaps of the mesh structure on the surface of the second sieve 22 are smaller than the gaps of the mesh structure on the surface of the third sieve 25. The corn seeds are screened three times by the first sieve 18, the second sieve 22 and the third sieve 25 to improve the screening quality of the corn seeds.

[0033] The top of the second screen box 21 is a mesh structure, which facilitates air to pass through the top of the second screen box 21 into the second screen box 21. The air penetrates the mesh structure on the surface of the second screen 22 and the third screen 25 and accelerates impurities to enter the second storage box 31 faster. At the same time, it has a dust suppression effect and is more convenient to use.

[0034] The second screen 22, the third screen 25 and the movable bracket 24 are all connected by rotation, which makes the second screen 22 and the third screen 25 more flexible when vibrating, avoids long-term vibration affecting the service life of the second screen 22 and the third screen 25, and improves safety in use.

[0035] The second screen 22 and the third screen 25 form a telescopic mechanism with the spring 23, and the telescopic distance of the telescopic mechanism is less than the initial length of the spring 23. The spring 23 can play an effective supporting role, and the deformation of the spring 23 can improve the vibration effect of the second screen 22 and the third screen 25, thereby further improving the screening efficiency and screening quality.

[0036] The top of the baffle 27 is at a higher level than the bottom right side of the second screen 22. When corn seeds fall from the right side of the second screen 22 to the right side of the third screen 25, the baffle 27 can effectively prevent the seeds from splashing out of the third screen 25, thereby improving ease of use.

[0037] The working principle of the present invention is as follows: when using the wind screen type corn seed cleaning machine with double screen box function, firstly, the corn seeds to be cleaned are poured into the feed port 8, the external power is turned on, the first motor 4 is started, and the spiral transmission group 6 and the auger 7 are driven to rotate through the first motor shaft 5, and the rotating auger 7 drives the corn seeds to move upward to the discharge pipe 9, and the corn seeds pass through the grille 10 and fall loosely under the action of gravity. At this time, the impurities in the corn seeds are separated from the corn seeds, and the first fan 16 is started to drive the external air to enter the discharge pipe 9 from the air inlet 11, and drive the impurities with lighter weight and larger surface area mixed in the corn seeds to enter the light impurity feed pipe 12, and the air is discharged through the first filter 15, while the impurities are filtered out by the first filter. The net 15 blocks and falls into the first miscellaneous storage box 14 through the first light impurity discharge pipe 13 for storage, and the heavier impurities such as corn seeds and sand and gravel fall downward to the surface of the first screen 18 on the upper side of the first screen box 17, and roll along the surface of the first screen 18 on the upper side under the action of gravity, and fall to the surface of the first screen 18 on the lower side, and roll along the surface of the first screen 18 on the lower side to the first discharge port 20. In the process of the rolling of the corn seeds, the finer impurities such as sand and gravel in the corn seeds pass through the mesh structure on the surface of the first screen 18 and fall into the bottom of the first screen box 17, and finally enter the first miscellaneous storage box 14 through the second light impurity discharge pipe 19 for storage, and the corn seeds fall into the second screen inside the second screen box 21 through the first discharge port 20. The second motor 38 is started, and the third roller 40 and the second belt 41 are driven to rotate through the second motor shaft 39. The second belt 41 drives the second roller 37 and the rotating shaft 36 to rotate. The rotating shaft 36 drives the eccentric wheel 35 to rotate. The rotating eccentric wheel 35 drives the first belt 34 and the first roller 28 to rotate. The vibration generated by the eccentric wheel 35 during the rotation is transmitted to the movable bracket 24. The movable bracket 24 drives the second screen 22 and the third screen 25 to vibrate. During the vibration, the left sides of the second screen 22 and the third screen 25 are kept fixed by the spring 23 and the vibration effect is improved by the deformation of the spring 23. The corn seeds are on the surface of the second screen 22. During the rolling process, the vibration of the second screen 22 accelerates the separation of impurities from corn seeds and passes through the second filter 32 and the third screen 25 to fall into the bottom of the second screen box 21. When the corn seeds roll to the surface of the third screen 25, they begin to roll to the left, and the second fan 33 is started to drive the external air to pass through the mesh structure on the top of the second screen box 21 into the second screen box 21, and pass through the mesh structure on the surface of the second screen 22 and the third screen 25, accelerating the impurities to pass through the second screen 22 and the third screen 25 faster to enter the bottom of the second screen box 21 and finally enter the second storage box 31 for storage. The second filter 32 can block impurities and dust in the second storage box 31. After screening, the corn seeds roll to the left to the second discharge port 29.The corn seeds are rolled into the storage box 30 through the second discharge port 29 for storage. When all corn seeds are sorted, the sorted corn seeds are collected and stored, thus completing a series of work.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind screen type corn seed cleaning machine with double screen box function, comprising a base (1) and a second belt (41), characterized in that: A fixing frame (2) is arranged on the top of the base (1), and a feeding pipe (3) is arranged on the left side of the fixing frame (2); a first motor (4) is arranged below the feeding pipe (3), and the first motor (4) is rotatably connected to a first motor shaft (5); the first motor shaft (5) is rotatably connected to a spiral transmission group (6), and the spiral transmission group (6) is rotatably connected to an auger (7); the auger (7) is arranged in the feeding pipe (3), and the left side of the bottom left of the feeding pipe (3) is connected to a feeding port (8); the top of the feeding pipe (3) is connected to a discharging pipe (9), and a grille (10) is arranged in the discharging pipe (9); an air inlet (11) is arranged on the left side of the bottom of the discharging pipe (9), and the right side of the bottom of the discharging pipe (9) is connected to a light impurity feeding pipe ( The light impurity feed pipe (12) is connected to a first light impurity discharge pipe (13), the bottom of the right end of the light impurity feed pipe (12) is connected to a first light impurity discharge pipe (13), and the bottom of the first light impurity discharge pipe (13) is connected to the right side of the top of a first impurity storage box (14), a first filter screen (15) is arranged on the right side of the interior of the light impurity feed pipe (12), and a first fan (16) is arranged on the right side of the light impurity feed pipe (12), the bottom of the discharge pipe (9) is connected to a first screen box (17), and a first screen screen (18) is arranged in the first screen box (17), the right side of the bottom of the first screen box (17) is connected to a second light impurity discharge pipe (19), and the second light impurity discharge pipe (19) is connected to the left side of the top of the first impurity storage box (14), and the left side of the bottom of the first screen box (17) is provided with a first discharge pipe (19). The first discharge port (20) is connected to the left side of the top of the second screen box (21); a second screen (22) is arranged in the second screen box (21); the left side of the second screen (22) is connected to the left inner wall of the second screen box (21) via a spring (23); the right side of the second screen (22) is rotatably connected to a movable bracket (24); the left lower end of the movable bracket (24) is rotatably connected to a third screen (25); the left side of the third screen (25) is rotatably connected to a connecting rod (26); the left side of the connecting rod (26) is connected to the left inner wall of the second screen box (21) via a spring (23); a baffle (27) is arranged on the right side of the third screen (25); the right side of the movable bracket (24) is rotatably connected to the third screen (25); a roller (28); a second discharge port (29) is provided on the left side of the bottom of the second screen box (21); the bottom of the second discharge port (29) is connected to a material storage box (30); the right side of the bottom of the second screen box (21) is connected to a second storage box (31); a second filter screen (32) is provided in the second storage box (31); the second filter screen (32) is connected to a second fan (33); the first roller (28) is rotatably connected to a first belt (34); the right side of the first belt (34) is rotatably connected to an eccentric wheel (35); a rotating shaft (36) is rotatably connected to the eccentric wheel (35); a second roller (37) is rotatably connected to the rotating shaft (36); a second motor (38) is provided on the left side of the rotating shaft (36);The second motor (38) is rotatably connected to a second motor shaft (39), and the second motor shaft (39) is rotatably connected to a third roller (40), the left end of the second belt (41) is rotatably connected to the third roller (40), and the right end of the second belt (41) is rotatably connected to the second roller (37).

2. The wind screen type corn seed cleaning machine with double screen box function according to claim 1 is characterized in that: The grid (10) has a void structure inside, and the spacing of the voids is greater than the diameter of a RMB one-yuan coin.

3. The wind screen type corn seed cleaning machine with double screen box function according to claim 1, characterized in that: The center point of the first filter screen (15) and the center point of the light impurity feed pipe (12) are on the same horizontal straight line.

4. The wind screen type corn seed cleaning machine with double screen box function according to claim 1, characterized in that: Two first screens (18) are provided, and the two first screens (18) are arranged in an inclined shape, and the left side of the upper first screen (18) is connected to the left inner wall of the first screen box (17), and the right side of the lower first screen (18) is connected to the right inner wall of the first screen box (17).

5. The wind screen type corn seed cleaning machine with double screen box function according to claim 1, characterized in that: The surfaces of the first screen (18), the second screen (22) and the third screen (25) are all mesh structures, and the gaps of the mesh structure on the surface of the first screen (18) are smaller than the gaps of the mesh structure on the surface of the second screen (22), and the gaps of the mesh structure on the surface of the second screen (22) are smaller than the gaps of the mesh structure on the surface of the third screen (25).

6. The wind screen type corn seed cleaning machine with double screen box function according to claim 1, characterized in that: The top of the second screen box (21) is a mesh structure.

7. The wind screen type corn seed cleaning machine with double screen box function according to claim 1, characterized in that: The second screen (22), the third screen (25) and the movable bracket (24) are all connected by rotation.

8. The wind screen type corn seed cleaning machine with double screen box function according to claim 1, characterized in that: The second screen (22) and the third screen (25) form a telescopic mechanism with the spring (23), and the telescopic distance of the telescopic mechanism is less than the initial length of the spring (23).

9. The wind screen type corn seed cleaning machine with double screen box function according to claim 1, characterized in that: The top of the baffle (27) is located at a level higher than the right side of the bottom of the second screen (22).

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