A cleaning device for food safety storage

Abstract

The application provides a cleaning device for grain safety storage, and belongs to the field of grain cleaning. The cleaning device comprises a cleaning machine, a cleaning frame fixedly connected to the cleaning machine, a feeding assembly, and a feeding hopper fixedly connected to one side of the top of the cleaning frame. The top of the feeding hopper is fixedly connected with a connecting part, vertical grooves are formed on the front and back sides of the connecting part, a same pushing shaft is inserted into the two vertical grooves, one end of the pushing shaft is fixedly connected with a gear, and one side of the connecting part is fixedly connected with a rack. The feeding assembly and the portal lifting assembly are matched to realize intermittent feeding of the grain during the feeding process, so as to avoid the problem of grain particle accumulation caused by continuous feeding. In addition, the pushing operation can avoid the blockage of the grain particles near the discharging groove, improve the cleaning effect, and ensure the feeding speed and screening efficiency.

Description

Technical Field

[0001] This invention relates to the field of grain cleaning technology, specifically a cleaning device for safe grain storage. Background Technology

[0002] The purpose of grain cleaning is twofold: firstly, to improve the technological efficiency of cleaning and processing machinery and equipment, ensuring safe production; and secondly, to increase product purity, ensuring public health. It also reduces transportation and storage costs and facilitates flour storage. If grain contains hard impurities such as stones or metal, it can easily damage the cleaning machinery during processing, affecting the technological efficiency of the equipment and shortening its service life. Therefore, a cleaning device is needed before grain can be safely stored.

[0003] Existing grain cleaning devices filter grains through vibrating screens, then stratify them based on the density difference between grain particles and stones or leaves, and finally discharge them through different discharge ports to remove impurities from the grain particles. However, these devices often use continuous pouring or feeding methods to feed grains. While this feeding method is simple and convenient, it can easily lead to too many or too few grain particles being fed at one time. Too many grains will cause them to pile up, affecting the screening and filtering effect, while too few grains will result in low screening efficiency.

[0004] Therefore, we propose a cleaning device for safe grain storage to solve the problems mentioned above. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a cleaning device for safe grain storage to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved through the following technical solution: it includes a cleaning machine, on which a cleaning frame is fixedly connected;

[0007] A feeding assembly includes a feeding hopper fixedly connected to one side of the top of a cleaning frame. A connecting part is fixedly connected to the top of the feeding hopper. Vertical slots are respectively opened on the front and rear sides of the connecting part. The same pushing shaft is inserted into the two vertical slots. A gear is fixedly connected to one end of the pushing shaft. A rack is fixedly connected to one side of the connecting part. The gear and the rack mesh. A feeding frame is fixedly connected to the middle of the outer side of the pushing shaft. A long connecting rod is rotatably connected to the middle of the outer side of the pushing shaft. A pull shaft is rotatably connected to the upper side between the inner walls of the front and rear sides of the connecting part. A short connecting rod is fixedly connected to the middle of the outer side of the pull shaft. The short connecting rod is rotatably connected to one side of the long connecting rod.

[0008] A drive assembly includes a bracket fixedly connected to the rear side of the connecting part, a motor fixedly connected to the bracket, a dial fixedly connected to the output end of the motor, a grooved wheel fixedly connected to one outer end of the pull shaft, the grooved wheel having radial grooves distributed circumferentially, and a cylindrical pin fixedly connected to the dial.

[0009] A gantry lifting assembly includes a stop fixedly connected to one side of the feed hopper. Limit frames are fixedly connected to the upper front and rear sides of one side of the stop. A discharge chute is provided on the lower side of one side of the stop. A gantry plate is slidably connected to one side of the stop. Guide portions are fixedly connected to the front and rear sides of the top of the gantry plate. A top plate is fixedly connected to the top of the two guide portions. Protruding rings are fixedly connected to the front and rear sides of the top of the top of the top plate. Side plates are fixedly connected to the front and rear sides of the top of the feed hopper. A central shaft is rotatably connected between the two side plates. Guide rods are fixedly connected to the outer sides of both ends of the central shaft. Moving grooves are provided on the left and right sides of one side of the guide rods. The two ends of a pusher shaft are movably connected to the inner sides of adjacent moving grooves. A baffle lifting shaft is rotatably connected between the two protruding rings. The two ends of the baffle lifting shaft are also movably connected to the inner sides of adjacent moving grooves.

[0010] In a preferred embodiment of the present invention, a feeding adjustment assembly is further included. The feeding adjustment assembly includes an adjustment plate slidably connected to one side of the baffle. A thin rod is fixedly connected to the middle of one side of the adjustment plate. A gap is opened in the middle of one side of the baffle. A short groove is opened in the middle of one side of the gantry plate. A movable ring is fixedly connected to one end of the thin rod. The movable ring is movably connected to the inner side of the short groove. A limit plate is fixedly connected to one end of the movable ring. A pressure cap is threaded to one end of the thin rod.

[0011] In a preferred embodiment of the present invention, the top of the feeding rack is provided with a groove, and the long connecting rod is located in the groove.

[0012] In a preferred embodiment of the present invention, one side of the feeding rack has an arc-shaped cross-section, and when the feeding rack is at its lowest point, the arc-shaped tangent at its bottom end is parallel to the plane of the bottom inner wall of the feeding hopper.

[0013] In a preferred embodiment of the present invention, when the feeding rack is at its lowest point, both the long connecting rod and the short connecting rod are perpendicular to the bottom plane of the feeding hopper.

[0014] In a preferred embodiment of the present invention, an arc-shaped groove is formed around the outer side of the grooved wheel, and a crescent block is fixedly connected to one side of the dial.

[0015] In a preferred embodiment of the present invention, the baffle, the connecting part and the feed hopper are integrally formed, and there is an angle between the bottom plane of the feed hopper and the ground.

[0016] In a preferred embodiment of the present invention, vertical sliders are fixedly connected to the front and rear sides of one side of the adjusting plate, and lifting grooves are respectively provided on the front and rear sides of one side of the stop.

[0017] In a preferred embodiment of the present invention, the width of the gap is adapted to the outer diameter of the thin rod, and the outer diameter of the limiting plate is larger than the outer diameter of the movable ring.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. By combining the feeding components and the gantry lifting components, intermittent feeding of grain can be achieved during the feeding process to avoid the problem of grain particle accumulation caused by continuous feeding. At the same time, the pushing mechanism can prevent grain particles from clogging near the discharge chute, thereby improving the cleaning effect while ensuring feeding speed and screening efficiency.

[0020] 2. Through the set drive components, the feeding component and the gantry lifting component can be driven synchronously, so that they can perform intermittent motions respectively. At the same time, the two intermittent motions can be combined into one action, which is compact and easy to control.

[0021] 3. The opening area of ​​the feeding trough can be controlled by the feeding adjustment component to adapt to the feeding requirements of different particle sizes. It has a wide range of adaptability and compatibility with different types of grains, which improves the adaptability and flexibility of the device. Attached Figure Description

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 This is one of the three-dimensional structural schematic diagrams from another perspective of the present invention;

[0025] Figure 3 This is another perspective three-dimensional structural schematic diagram of the present invention;

[0026] Figure 4 This is a schematic diagram of the disassembled structure of the present invention;

[0027] Figure 5 yes Figure 1 An enlarged schematic diagram of part A is shown below;

[0028] Figure 6 yes Figure 2 The enlarged schematic diagram of part B shown below;

[0029] Figure 7 yes Figure 3The enlarged schematic diagram of part C shown below;

[0030] Figure 8 yes Figure 4 The diagram shown is an enlarged view of part D.

[0031] Figure 9 This is a schematic diagram of a partially assembled three-dimensional enlarged structure in this invention.

[0032] In the diagram: 1. Cleaning machine; 2. Cleaning frame; 3. Feed hopper; 4. Connecting part; 5. Vertical groove; 6. Pushing shaft; 7. Gear; 8. Rack; 9. Feeding frame; 10. Long connecting rod; 11. Pull shaft; 12. Short connecting rod; 13. Support; 14. Motor; 15. Dial plate; 16. Grooved wheel; 17. Radial groove; 18. Cylindrical pin; 19. Stop; 20. Limiting frame; 21. Discharge chute; 22. Gantry plate; 23. Guide part; 24. Top plate; 25. Convex ring; 26. Side plate; 27. Central shaft; 28. Guide rod; 29. ​​Moving groove; 30. Baffle lifting shaft; 31. Adjusting plate; 32. Thin rod; 33. Gap; 34. Short groove; 35. Moving ring; 36. Limiting plate; 37. Pressure cap; 38. Groove; 39. Arc groove; 40. Crescent block. Detailed Implementation

[0033] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-9 As shown, a grain cleaning device for safe storage includes a cleaning machine 1, on which a cleaning frame 2 is fixedly connected. The cleaning machine 1 is a common grain cleaning machine that classifies grain and impurities by vibrating screen. The cleaning frame 2 is equipped with multiple layers of filter screens for layering grain and impurities.

[0035] As one implementation method in this embodiment, such as Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7As shown, the feeding assembly includes a feeding hopper 3 fixedly connected to one side of the top of the cleaning frame 2. A connecting part 4 is fixedly connected to the top of the feeding hopper 3. Vertical grooves 5 are respectively opened on the front and rear sides of the connecting part 4. The same pushing shaft 6 is inserted into the two vertical grooves 5. A gear 7 is fixedly connected to one end of the pushing shaft 6. A rack 8 is fixedly connected to one side of the connecting part 4. The gear 7 and the rack 8 mesh. A feeding frame 9 is fixedly connected to the middle of the outer side of the pushing shaft 6. A long connecting rod 10 is rotatably connected to the middle of the outer side of the pushing shaft 6. A pull shaft 11 is rotatably connected to the upper side between the inner walls of the front and rear sides of the connecting part 4. A short connecting rod 12 is fixedly connected to the middle of the outer side of the pull shaft 11. The short connecting rod 12 is rotatably connected to one side of the long connecting rod 10.

[0036] It should be noted that the feed hopper 3 is used to conveniently pour in and temporarily store the grain used for cleaning. The connecting part 4 is used to fix the pull shaft 11 and provide space for the movement of the push shaft 6. The distance between the connecting part 4 and the pull shaft 11 should be greater than the length of the short connecting rod 12 to avoid interference between the short connecting rod 12 and the connecting part 4 during rotation. The vertical groove 5 is used to guide the push shaft 6. The gear 7 can drive the push shaft 6 to rotate by meshing with the rack 8 when it moves with the push shaft 6, so as to change the angle of the feeding frame 9. The long connecting rod 10 and the short connecting rod 12 cooperate to pull the push shaft 6 to make reciprocating lifting and lowering motion by rotating the pull shaft 11. The whole is equivalent to a crank slider mechanism. By making the push shaft 6 make reciprocating lifting and lowering motion, the feeding frame 9 can realize the intermittent pushing and feeding of the grain particles accumulated in the feed hopper 3, avoiding the problem of excessive accumulation of grain particles on the filter screen caused by continuous feeding, and ensuring the cleaning effect of the grain.

[0037] As one implementation method in this embodiment, such as Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 9 As shown, the drive assembly includes a bracket 13 fixedly connected to the rear side of the connecting part 4, a motor 14 fixedly connected to the bracket 13, a dial 15 fixedly connected to the output end of the motor 14, a grooved wheel 16 fixedly connected to the outer end of the pull shaft 11, radial grooves 17 distributed circumferentially on the grooved wheel 16, and a cylindrical pin 18 fixedly connected to the dial 15.

[0038] It should be noted that the bracket 13 is used to fix the motor 14. The dial 15 and the grooved wheel 16 form a grooved wheel mechanism, which can drive the pull shaft 11 to perform intermittent motion, so as to achieve intermittent feeding control of the feeding frame 9. The radial groove 17 cooperates with the cylindrical pin 18. When the cylindrical pin 18 enters the radial groove 17, the dial 15 can drive the grooved wheel 16 to rotate. Alternatively, a pair of speed regulating gears can be added between the grooved wheel mechanism and the pull shaft 11. An additional driven shaft is provided for transition, so that when the grooved wheel mechanism rotates once, the pull shaft 11 rotates exactly one revolution. This can satisfy the requirement that the gantry plate 22 opens and closes once during one intermittent motion, realizing one intermittent feeding motion. Through the set drive component, the feeding component and the gantry lifting component can be driven synchronously, so that they can perform intermittent motion respectively. At the same time, the two intermittent motions can be combined into one action, which is compact and easy to control.

[0039] As one implementation method in this embodiment, such as Figure 1 , Figures 3-5 and Figure 8 As shown, the gantry lifting assembly includes a stop 19 fixedly connected to one side of the feed hopper 3. Limit frames 20 are fixedly connected to the upper front and rear sides of one side of the stop 19. A feeding trough 21 is provided on the lower side of one side of the stop 19. A gantry plate 22 is slidably connected to one side of the stop 19. Guide parts 23 are fixedly connected to the front and rear sides of the top of the gantry plate 22. A top plate 24 is fixedly connected to the top of the two guide parts 23. A convex ring 25 is fixedly connected to the front and rear sides of the top of the top of the top plate 24. Side plates 26 are fixedly connected to the front and rear sides of the top of the feed hopper 3. A central shaft 27 is rotatably connected between the two side plates 26. Guide rods 28 are fixedly connected to the outer sides of both ends of the central shaft 27. Moving grooves 29 are provided on the left and right sides of one side of the guide rods 28. The two ends of the push shaft 6 are movably connected to the inner sides of the adjacent moving grooves 29. A baffle lifting shaft 30 is rotatably connected between the two convex rings 25. The two ends of the baffle lifting shaft 30 are also movably connected to the inner sides of the adjacent moving grooves 29.

[0040] It should be noted that the baffle 19 is used to limit the tilting of the grain, the limiting frame 20 is used to limit and guide the sliding of the gantry plate 22 on one side, the feeding trough 21 is used to facilitate the grain particles falling into the cleaning frame 2 for vibrating and screening, and the height of the feeding trough 21 is less than the height of the gantry plate 22 so that the gantry plate 22 can completely seal and block the feeding trough 21 when it is lowered to the lowest point, thus preventing continuous material falling. The guide part 23 cooperates with the limiting frame 20 to allow the limiting frame 20 to slide within the guide part 23 to guide the gantry plate 22. The top plate 24 facilitates the connection of the guide parts 23 on both sides to make them a whole. The convex ring 25 is used to fix and support the baffle lifting shaft 30, the central shaft 27 is used to provide the rotation center for the guide rod 28, and the side plate 26 is used to fix and support... The central shaft 27 and guide rod 28 each have two non-communicating movable slots 29, which facilitate the movement of the pusher shaft 6 and the baffle lifting shaft 30. Through the cooperation of the guide rod 28, movable slots 29, pusher shaft 6, and baffle lifting shaft 30, a seesaw-like structure can be formed. The rotation center of the seesaw is the axis of the central shaft 27, so that when the height of the pusher shaft 6 decreases, the height of the baffle lifting shaft 30 increases, thus achieving opposite movement directions on both sides. Furthermore, by designing the distances from the baffle lifting shaft 30 and the pusher shaft 6 to the central shaft 27, the lifting heights of the baffle lifting shaft 30 and the pusher shaft 6 can be made different, facilitating drive control via a single power source, ensuring the synchronicity of structural operation, and simplifying the control method.

[0041] As one implementation method in this embodiment, such as Figures 3-5 , Figure 7 and Figure 8 As shown, it also includes a feeding adjustment assembly, which includes an adjustment plate 31 slidably connected to one side of the stop 19. A thin rod 32 is fixedly connected to the middle of one side of the adjustment plate 31. A gap 33 is opened in the middle of one side of the stop 19. A short groove 34 is opened in the middle of one side of the gantry plate 22. A movable ring 35 is fixedly connected to one end of the thin rod 32. The movable ring 35 is movably connected to the inside of the short groove 34. A limit plate 36 is fixedly connected to one end of the movable ring 35. A pressure cap 37 is threadedly connected to one end of the thin rod 32.

[0042] It should be noted that the adjusting plate 31 is used to move up and down to change the opening area of ​​the feeding trough 21, so as to adjust the feeding speed according to different grain particle sizes. The thin rod 32 is used to cooperate with the pressure cap 37 to press the adjusting plate 31 against one side of the baffle 19 and fix it. The gap 33 is used to facilitate the passage of the thin rod 32. The short groove 34 is used to ensure that the adjusting plate 31 is fixed. The side of the pressure cap 37 that contacts the baffle 19 is provided with a silicone protective pad to increase the frictional resistance when it contacts the baffle 19, and at the same time avoid friction. When wiping, the surface of the baffle 19 is worn, but the gantry plate 22 can still move up and down. At this time, the movable ring 35 will move up and down in the short groove 34. The limit plate 36 is used to limit the position of the movable ring 35 and the thin rod 32 in the short groove 34 to prevent them from falling off from one side. Through the set feeding adjustment component, the opening area of ​​the feeding trough 21 can be controlled to adapt to the feeding requirements of different sized particles. It has a wide range of adaptability and compatibility with grain types, which improves the adaptability and flexibility of the device.

[0043] In this embodiment, as Figure 2 , Figure 3 and Figure 7 As shown, the top of the feeding rack 9 is provided with a groove 38, and the long connecting rod 10 is located in the groove 38. The groove 38 is used to make room for the installation of the long connecting rod 10, which facilitates the installation process of the long connecting rod 10.

[0044] In this embodiment, as Figure 1 and Figure 3 As shown, one side of the feeding frame 9 has an arc-shaped cross-section. When the feeding frame 9 is at its lowest point, the arc-shaped tangent at its bottom end is parallel to the inner wall plane of the bottom of the feeding hopper 3. The arc shape allows the feeding frame 9 to provide an oblique force to the grain particles in the feeding hopper 3 like a shovel when rotating, pushing the grain particle pile to move towards the side closer to the discharge trough 21, which facilitates the rapid discharge of grain particles. It can also prevent them from accumulating at the discharge trough 21 and causing blockage through the squeezing force, thereby avoiding the accumulation of grain particles and ensuring rapid single discharge of grain.

[0045] In this embodiment, as Figure 1 and Figure 3 As shown, when the feeding rack 9 is at its lowest point, both the long connecting rod 10 and the short connecting rod 12 are perpendicular to the bottom plane of the feeding hopper 3. When both the long connecting rod 10 and the short connecting rod 12 are perpendicular to the bottom plane of the feeding hopper 3 and do not overlap, this is the lowest point that the feeding rack 9 can reach. This design avoids interference caused by the feeding rack 9 continuing to lower after reaching the lowest point, ensuring reliable and stable operation of the structure.

[0046] In this embodiment, as Figures 6-9As shown, an arc-shaped groove 39 is provided around the outer circumference of the grooved wheel 16, and a crescent block 40 is fixedly connected to one side of the dial 15. When the dial 15 rotates to the point where the cylindrical pin 18 separates from the radial groove 17, the crescent block 40 will contact the arc-shaped groove 39. The contact between the two restricts the current angle of the grooved wheel 16, preventing it from deflecting freely and ensuring the stability of the structure during operation.

[0047] In this embodiment, as Figures 1-8 As shown, the baffle 19, the connecting part 4 and the feed hopper 3 are integrally formed. There is an angle between the bottom plane of the feed hopper 3 and the ground. The integral forming facilitates installation. The angle allows the grain particles in the feed hopper 3 to slide down under the action of gravity, which is convenient for feeding.

[0048] In this embodiment, as Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, vertical sliders are fixedly connected to the front and rear sides of one side of the adjusting plate 31, and lifting grooves are provided on the front and rear sides of one side of the stop 19. The vertical sliders and lifting grooves cooperate to guide the movement of the adjusting plate 31 on the stop 19, so that the movement of the adjusting plate 31 is stable.

[0049] In this embodiment, as Figure 3 , Figure 5 , Figure 7 and Figure 8 As shown, the width of the gap 33 is matched with the outer diameter of the thin rod 32, and the outer diameter of the limiting plate 36 is larger than the outer diameter of the movable ring 35. The limiting outer diameter allows the thin rod 32 to pass through the gap 33. The limiting plate 36 cannot move from one side of the short groove 34 to the other side, so as to ensure that it is difficult to detach after installation, thereby improving the structural stability after assembly.

[0050] In practical use, the grain to be cleaned is first poured onto the feed hopper 3. The device is then connected to an external power source and controlled by a controller. After the motor 14 starts working, it drives the dial 15 to rotate. When the dial 15 rotates, the grooved wheel 16 does not rotate when the crescent block 40 is in contact with the arc groove 39. When the cylindrical pin 18 on the dial 15 begins to contact the radial groove 17 on the grooved wheel 16, the grooved wheel 16 begins to rotate. The rotation of the grooved wheel 16 drives the pull shaft 11 to rotate. When the pull shaft 11 rotates, it drives the short connecting rod 12 to rotate. When the short connecting rod 12 rotates, it pulls the long connecting rod 10 to move, causing the height of the push shaft 6 to change. At the same time, the included angles between the two ends of the long connecting rod 10 and the connection points of the push shaft 6 and the short connecting rod 12 change. The push shaft 6 is pulled by the long connecting rod 10. Both ends move vertically within the vertical groove 5. When its height decreases, the gear 7 at one end meshes with the rack 8 during movement, causing the pusher shaft 6 to rotate. The rotation of the pusher shaft 6 synchronously changes the angle of the outer feeding frame 9, thus simultaneously lowering the height of the pusher shaft 6 and rotating the angle of the feeding frame 9. This pushes the grain to be cleaned stored in the feeding frame 9 towards the side closer to the gantry plate 22. Simultaneously, as the pusher shaft 6 lowers, its end moves within the moving groove 29, pushing the guide rod 28 to rotate around the central axis 27, lowering the height on that side. The rotation of the guide rod 28 raises the height of the baffle lifting shaft 30 within the opposite moving groove 29, causing it to rise through contact with the baffle in the moving groove 29. When raised, the guide section 23 pulls the gantry plate 22 upward along the baffle 19, so that it no longer blocks the feeding trough 21. The feeding area of ​​the feeding trough 21 continuously increases, exposing the feeding trough 21. At this time, the grain particles in the feed hopper 3 move towards the side closer to the feeding trough 21 under the pushing force of the feeding frame 9, and slide out from the opened feeding trough 21, falling into the filter screen in the cleaning frame 2. The vibrating motor on the cleaning machine 1 works to achieve vibrating screening and stratification, cleaning the falling grain particles. When its height increases, the gear 7 at one end meshes with the rack 8 during the movement, causing the push shaft 6 to rotate. When the push shaft 6 rotates, it drives the outer feeding frame 9 to change its angle synchronously in the opposite direction from the original angle, thus realizing the simultaneous increase in the height of the push shaft 6. The angle of the feeding rack 9 rotates synchronously, no longer pushing the grain to be cleaned stored in the feeding rack 9. At the same time, when the height of the pushing shaft 6 increases, its end will push the guide rod 28 to rotate around the central axis 27 by moving in the moving groove 29, so that the height on that side increases. When the guide rod 28 rotates, it will drive the height of the baffle lifting shaft 30 in the moving groove 29 on the opposite side to decrease. It will push the baffle lifting shaft 30 to decrease in height by contacting it in the moving groove 29. When the height of the baffle lifting shaft 30 decreases, it will pull the gantry plate 22 down along the baffle 19 through the guide part 23, so that it continuously increases the area of ​​the feeding trough 21. The area of ​​the feeding trough 21 that can be fed will continuously decrease until the feeding trough 21 is completely sealed. At this time, the grain particles in the feed hopper 3 cannot slide out from the feeding trough 21.This allows time for the residual grain particles on the filter screen to continue vibrating. When the cylindrical pin 18 on the dial 15 no longer contacts the radial groove 17 on the grooved wheel 16, and the crescent block 40 begins to fit against the arc groove 39, the grooved wheel 16 does not rotate. At this time, all components are stationary until the cylindrical pin 18 on the dial 15 re-contacts the radial groove 17 on the grooved wheel 16. Then, all components continue to move along their original trajectory. When it is necessary to adjust the maximum opening area of ​​the feeding trough 21 according to the size of the grain particles being cleaned, first rotate the pressure cap 37 so that one end no longer presses against the outer wall of the baffle 19, and push the pressure cap 37 upward. Through the thin rod 32 and the movable ring 35 connected by its internal thread, the adjusting plate 31 slides downward along the baffle 19 to a suitable height. Then, rotate the pressure cap 37 in the opposite direction so that the thin rod 32 re-enters the inner side of the pressure cap 37 until one side of the pressure cap 37 is again pressed against the adjacent surface of the baffle 19.

[0051] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A cleaning device for safe grain storage, characterized in that, include: Cleaning machine (1), on which a cleaning frame (2) is fixedly connected; The feeding assembly includes a feeding hopper (3) fixedly connected to the top side of the cleaning frame (2). A connecting part (4) is fixedly connected to the top of the feeding hopper (3). Vertical grooves (5) are opened on the front and rear sides of the connecting part (4). The same pushing shaft (6) is inserted in the two vertical grooves (5). A gear (7) is fixedly connected to one end of the pushing shaft (6). A rack (8) is fixedly connected to one side of the connecting part (4). The gear (7) meshes with the rack (8). A feeding frame (9) is fixedly connected to the middle of the outer side of the pushing shaft (6). A long connecting rod (10) is rotatably connected to the middle of the outer side of the pushing shaft (6). A pull shaft (11) is rotatably connected to the upper side between the inner walls of the front and rear sides of the connecting part (4). A short connecting rod (12) is fixedly connected to the middle of the outer side of the pull shaft (11). The short connecting rod (12) is rotatably connected to one side of the long connecting rod (10). The drive assembly includes a bracket (13) fixedly connected to the rear side of the connecting part (4), a motor (14) fixedly connected to the bracket (13), a dial (15) fixedly connected to the output end of the motor (14), a grooved wheel (16) fixedly connected to one outer end of the pull shaft (11), a radial groove (17) distributed circumferentially on the grooved wheel (16), and a cylindrical pin (18) fixedly connected to the dial (15). The gantry lifting assembly includes a stop (19) fixedly connected to one side of the feed hopper (3). Limit frames (20) are fixedly connected to the upper front and rear sides of one side of the stop (19). A discharge chute (21) is provided on the lower side of one side of the stop (19). A gantry plate (22) is slidably connected to one side of the stop (19). Guide parts (23) are fixedly connected to the front and rear sides of the top of the gantry plate (22). A top plate (24) is fixedly connected to the top of the two guide parts (23). A protruding ring (25) is fixedly connected to the front and rear sides of the top of the top of the top plate (24). The top front and rear sides of the feed hopper (3) are fixedly connected to side plates (26), and a central shaft (27) is rotatably connected between the two side plates (26). Guide rods (28) are fixedly connected to the outer sides of both ends of the central shaft (27). Moving grooves (29) are opened on the left and right sides of one side of the guide rod (28). The two ends of the push shaft (6) are movably connected to the inner side of the adjacent moving groove (29). A baffle lifting shaft (30) is rotatably connected between the two convex rings (25). The two ends of the baffle lifting shaft (30) are also movably connected to the inner side of the adjacent moving groove (29).

2. The grain cleaning device for safe storage according to claim 1, characterized in that, It also includes a feeding adjustment assembly, which includes an adjustment plate (31) slidably connected to one side of the stop (19), a thin rod (32) fixedly connected to the middle of one side of the adjustment plate (31), a gap (33) opened in the middle of one side of the stop (19), a short groove (34) opened in the middle of one side of the gantry plate (22), a movable ring (35) fixedly connected to one end of the thin rod (32), the movable ring (35) being movably connected to the inside of the short groove (34), a limit plate (36) fixedly connected to one end of the movable ring (35), and a pressure cap (37) threadedly connected to one end of the thin rod (32).

3. The grain cleaning device for safe storage according to claim 1, characterized in that, The top of the feeding rack (9) is provided with a groove (38), and the long connecting rod (10) is located in the groove (38).

4. A grain cleaning device for safe storage according to claim 3, characterized in that, One side of the feeding rack (9) has an arc-shaped cross section. When the feeding rack (9) is at its lowest point, the arc-shaped tangent at its bottom end is parallel to the bottom inner wall plane of the feeding hopper (3).

5. A grain cleaning device for safe storage according to claim 4, characterized in that, When the feeding rack (9) is at its lowest point, both the long connecting rod (10) and the short connecting rod (12) are perpendicular to the bottom plane of the feeding hopper (3).

6. A grain cleaning device for safe storage according to claim 1, characterized in that, The outer circumference of the grooved wheel (16) is provided with an arc-shaped groove (39), and a crescent block (40) is fixedly connected to one side of the dial (15).

7. A grain cleaning device for safe storage according to claim 1, characterized in that, The baffle (19), the connecting part (4) and the feed hopper (3) are integrally formed, and there is an angle between the bottom plane of the feed hopper (3) and the ground.

8. A grain cleaning device for safe storage according to claim 2, characterized in that, Vertical sliders are fixedly connected to the front and rear sides of one side of the adjusting plate (31), and lifting grooves are opened on the front and rear sides of one side of the stop (19).

9. A grain cleaning device for safe storage according to claim 8, characterized in that, The width of the slit (33) is adapted to the outer diameter of the thin rod (32), and the outer diameter of the limiting plate (36) is larger than the outer diameter of the movable ring (35).

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