A grain conveying device

Abstract

This utility model relates to the field of grain conveying equipment and discloses a grain conveying device, including a conveyor belt. Third support plates are installed inside the front and rear side walls of the conveyor belt. Connecting frames are threaded to the front and rear sides of the right side walls of the two third support plates. A screening mechanism is installed on the top right side of the conveyor belt. The screening mechanism includes a housing, four triangular blocks, a first motor, a belt, and a first connecting rod. A filter plate is fixedly connected to the bottom wall of the housing. This utility model, through its screening mechanism, solves the problems of blockage in the conveying channel, increased local humidity in the grain leading to mold and spoilage, and damage to the conveyor belt requiring downtime for maintenance. By continuously moving the grain on the filter plate, the grain is separated from impurities, effectively reducing the risk of pipe blockage due to impurity accumulation and thus improving overall conveying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of grain conveying equipment, and in particular to a grain conveying device. Background Technology

[0002] A grain conveying device is a piece of equipment used to move grain from one location to another. It mainly consists of a conveyor belt, drive roller, tension roller, and idlers. The conveyor belt wraps around the drive roller and tension roller; when the drive roller rotates, friction drives the conveyor belt. The grain is placed on the conveyor belt and transported to the designated location as the belt moves.

[0003] When grain is transported via conveyor belts, impurities cannot be effectively removed. During subsequent processing and storage, these impurities may damage processing equipment. They may also accumulate in critical parts of the conveyor system, causing blockages, increased localized moisture in the grain, leading to mold and spoilage, and ultimately, conveyor belt damage requiring downtime for repair. In grain processing or storage facilities, equipment heights often vary. Without height adjustment mechanisms, the conveyor system may struggle to precisely align with inlets or outlets of different heights. To compensate for these differences, operators may need to alter the conveyor route, using tilting or detours, increasing the distance and time the grain travels within the conveyor system. This results in unstable conveying processes, potentially causing malfunctions and further impacting work efficiency and grain quality. Utility Model Content

[0004] The main purpose of this utility model is to provide a grain conveying device that can effectively solve the problems of blockage in the conveying channel, increased local humidity in the grain leading to mold and spoilage, damage to the conveyor belt requiring downtime for maintenance, increased running distance and time of the grain in the conveying device, unstable conveying process, or even failure to work normally, which further affect work efficiency and grain quality.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a grain conveying device, comprising a conveyor belt, wherein third support plates are provided inside the front and rear side walls of the conveyor belt, and connecting frames are threadedly connected to the front and rear sides of the right side walls of the two third support plates, and a screening mechanism is provided on the top right side of the conveyor belt.

[0006] The sieving mechanism includes: a housing, four triangular blocks, a first motor, a belt, and a first connecting rod. A filter plate is fixedly connected to the inner bottom wall of the housing. Support frames are provided on both the front and rear sides of the bottom of the housing. A flow guide box is fixedly connected to the bottom of two of the support frames. The outer bottom of the flow guide box is threaded to the inside of the two connecting frames. The four triangular blocks are fixedly connected to the top left and right sides of the two support frames. A flow guide plate is fixedly connected to the right side wall of the housing and the filter plate. Support rods are connected through the left and right sides of the inside of the housing. Connecting rings are fixedly connected to the left and right ends of the two support rods. First sleeves are fixedly connected to the upper side walls of the four triangular blocks and the bottom walls of the four connecting rings. Springs are fixedly connected inside every two upper and lower first sleeves.

[0007] Furthermore, a vibration box is fixedly connected to both the front and rear sides of the housing, a top plate is fixedly connected to the top of the housing, the bottom wall of the first motor is fixedly connected to the upper side wall of the top plate, a first rotating rod is fixedly connected to the output end of the first motor, a first transmission wheel is fixedly connected to the front end of the first rotating rod, both ends of the first connecting rod are connected through the front and rear sides of the middle of the housing, a second transmission wheel is fixedly connected to the outer side of the front end of the first connecting rod, and the left and right sides of the belt are rotatably connected to the inside of the first and second transmission wheels.

[0008] Furthermore, the front and rear side walls of the housing are threaded with supports, the front and rear ends of the first connecting rod are rotatably connected to the inside of the supports, and the front and rear ends of the first connecting rod are fixedly connected with eccentric weights. The two eccentric weights are both set inside the two excitation boxes.

[0009] Furthermore, an outer box is provided on the outer side of the right side wall of the conveyor belt, and the bottoms of the two connecting frames are fixedly connected to the front and rear sides of the left side wall of the outer box. A second connecting rod is connected through the inside of the outer box, and a tensioning roller is fixedly connected to the outer side of the second connecting rod. The outer side of the tensioning roller is located inside the right side of the conveyor belt. A protective cover is provided on the outer side of the left side wall of the conveyor belt, and a protective box is fixedly connected to the front side wall of the protective cover.

[0010] Furthermore, a second motor is installed inside the protective box. A transmission device is fixedly connected to the output end of the second motor. A second rotating rod is fixedly connected to the rear end of the transmission device. A roller is fixedly connected to the outer side of the second rotating rod. The outer side of the roller is located inside the left side of the conveyor belt. A guide plate is fixedly connected to the left side of the inner side of the protective cover. A hopper is installed at the top right side of the conveyor belt. The discharge hole of the hopper is located at the top of the box.

[0011] Furthermore, a base plate is provided at the bottom of the conveyor belt, and first support plates are fixedly connected to the front and rear sides of the top right side wall of the base plate. The interior of the two first support plates is located on the outer sides of the front and rear ends of the second connecting rod. A line pipe is fixedly connected to the front side wall of the base plate, and a control panel is fixedly connected to the top of the line pipe. A connecting block is fixedly connected to the middle of the bottom wall of the two third support plates, and a guide rail plate is fixedly connected to the bottom of the connecting block.

[0012] Furthermore, a device box is fixedly connected to the upper side wall of the base plate. A third motor is installed on the left side inside the device box. A lead screw is fixedly connected to the output end of the third motor. A second sleeve is rotatably connected to the right end of the lead screw. The outer side of the right end of the second sleeve is slidably connected to the inside of the right side wall of the device box. A threaded sleeve is rotatably connected to the outer side of the lead screw.

[0013] Furthermore, a fixing ring is fixedly connected to the outer side of the threaded sleeve, and a first support rod is rotatably connected to the top outer side of the fixing ring. A connecting shaft is rotatably connected to the top of the first support rod, and the front and rear ends of the connecting shaft are slidably connected to the inside of the guide rail plate. A second support plate is fixedly connected to the inner right side wall of the device box, and a second support rod is rotatably connected to the middle of the first support rod. The other side of the second support rod is rotatably connected to the inside of the second support plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model, through its sieving mechanism, solves the problems of blockage in the conveying channel, increased localized moisture in the grain leading to mold and spoilage, and damage to the conveyor belt requiring downtime for maintenance. The grain continuously bounces and tumbles on the filter plate and moves towards the guide plate on the right. Smaller grain particles can pass through the sieve holes of the filter plate and fall into the guide box, while larger impurities are screened along the guide plate and discharged to the guide plate on the right side of the box. This achieves separation of grain and impurities, effectively reducing the risk of pipe blockage due to impurity accumulation, ensuring smooth conveying, and thus improving overall conveying efficiency.

[0016] 2. By incorporating a device box, guide rail plate, third motor, lead screw, threaded sleeve, connecting shaft, and second support plate, this system addresses the problems that increase the travel distance and time of grain in the conveying device, leading to unstable conveying processes or even malfunctions, further impacting work efficiency and grain quality. The lead screw and threaded sleeve are connected internally via a threaded fit, allowing the sleeve to slide left and right on the outside of the lead screw during rotation. The outer side of the threaded sleeve is rotatably connected to the first support rod via a fixed ring. During the sliding of the lead screw, the threaded sleeve moves linearly along the axial direction of the lead screw. As the threaded sleeve moves linearly, the connection point between the first support rod and the fixed ring also moves. The top of the first support rod is slidably connected to the guide rail plate via the connecting shaft, and the middle is rotatably connected to the second support rod. The second support rod is rotatably connected to the second support plate inside the device box, achieving a linkage structure. This allows the first support rod to change angle and move up and down under the push of the threaded sleeve, effectively improving production efficiency and enabling continuous and efficient grain conveying, reducing conveying interruptions caused by manual operation.

[0017] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a grain conveying device proposed in this utility model;

[0019] Figure 2 This is a structural diagram of the outer casing of a grain conveying device proposed in this utility model;

[0020] Figure 3 This is a structural diagram of the sieving mechanism of a grain conveying device proposed in this utility model;

[0021] Figure 4 This is a structural diagram of the top plate of a grain conveying device proposed in this utility model;

[0022] Figure 5 This is a structural diagram of the first transmission wheel of a grain conveying device proposed in this utility model;

[0023] Figure 6 This is a structural diagram of the guide box of a grain conveying device proposed in this utility model;

[0024] Figure 7 This is a schematic diagram of a guide plate for a grain conveying device proposed in this utility model;

[0025] Figure 8 This is a structural diagram of a roller in a grain conveying device proposed in this utility model;

[0026] Figure 9This is a structural diagram of the second connecting rod of a grain conveying device proposed in this utility model;

[0027] Figure 10 This is a structural diagram of the device box of a grain conveying device proposed in this utility model;

[0028] Figure 11 This is a schematic diagram of the screw structure of a grain conveying device proposed in this utility model;

[0029] Figure 12 This is a structural diagram of the second sleeve of a grain conveying device proposed in this utility model.

[0030] Legend:

[0031] 1. Conveyor belt; 2. Third support plate; 3. Screening mechanism; 301. Box body; 302. Filter plate; 303. Support frame; 304. Flow guide box; 305. Flow guide plate; 306. Triangular block; 307. Support rod; 308. Connecting ring; 309. First sleeve; 310. Spring; 311. Vibration box; 312. Top plate; 313. First motor; 314. First rotating rod; 315. First transmission wheel; 316. Belt; 317. Second transmission wheel; 318. First connecting rod; 319. Support; 320. Eccentric weight; 4. Connecting frame; 5. 1. Outer casing; 6. Second connecting rod; 7. Protective box; 8. Protective cover; 9. Second motor; 10. Transmission device; 11. Second rotating rod; 12. Roller; 13. Guide plate; 14. Tensioning roller; 15. Discharge hopper; 16. Base plate; 17. Line conduit; 18. Control panel; 19. First support plate; 20. Device box; 21. Connecting block; 22. Guide rail plate; 23. Third motor; 24. Lead screw; 25. Second sleeve; 26. Threaded sleeve; 27. Fixing ring; 28. First support rod; 29. ​​Connecting shaft; 30. Second support rod; 31. Second support plate. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0033] like Figure 1 - Figure 6 As shown: A grain conveying device includes a conveyor belt 1. Third support plates 2 are installed inside the front and rear side walls of the conveyor belt 1. These third support plates 2 support the front and rear sides of the conveyor belt 1, thereby improving its performance and preventing collapse in the middle area during conveying. Connecting frames 4 are threaded to the front and rear sides of the right side walls of the two third support plates 2. A screening mechanism 3 is installed at the top right side of the conveyor belt 1.

[0034] The screening mechanism 3 includes: a housing 301, four triangular blocks 306, a first motor 313, a belt 316, and a first connecting rod 318. A filter plate 302 is fixedly connected to the bottom wall of the housing 301. Before conveying the grain, the grain falls into the filter plate 302 inside the housing 301 through the hopper 15. Support frames 303 are provided on the front and rear sides of the bottom of the housing 301. A guide box 304 is fixedly connected to the bottom of the two support frames 303. The bottom outer side of the guide box 304 is threaded to the inside of the two connecting frames 4. The support frames 303 on the bottom wall of the housing 301 are connected to the guide box 304, so that the filtered grain falls accurately into the inside of the guide box 304. The guide box 304 is connected to the connecting frame 4, so that the entire screening mechanism 3 is fixed on the right side wall of the conveyor belt 1, and the grain can fall accurately into the right side wall of the conveyor belt 1 for grain conveying.

[0035] Four triangular blocks 306 are fixedly connected to the top left and right sides of the two support frames 303. A guide plate 305 is fixedly connected to the right side wall of the box body 301 and the filter plate 302. Support rods 307 are connected through the left and right sides inside the box body 301. Connecting rings 308 are fixedly connected to the left and right ends of the two support rods 307. First sleeves 309 are fixedly connected to the upper side wall of the four triangular blocks 306 and the bottom wall of the four connecting rings 308. Springs 310 are fixedly connected inside every two upper and lower first sleeves 309. The support frame 303 at the bottom of the box body 301 is connected to the springs 310 between the triangular blocks 306 and the connecting rings 308. The springs 310 play a role in buffering and auxiliary support, so that the box body 301 can maintain a relatively stable structure during vibration, avoiding damage to the equipment or affecting the screening effect due to excessive vibration.

[0036] like Figure 1 - Figure 6 As shown, the front and rear sides of the housing 301 are fixedly connected to the excitation box 311, and the top plate 312 is fixedly connected to the top of the housing 301. The bottom wall of the first motor 313 is fixedly connected to the upper side wall of the top plate 312. The top plate 312 is fixed to the top of the housing 301 to support the bottom of the first motor 313.

[0037] The output end of the first motor 313 is fixedly connected to the first rotating rod 314. The front end of the first rotating rod 314 is fixedly connected to the first transmission wheel 315. The front and rear ends of the first connecting rod 318 are both connected through to the front and rear sides of the middle part of the housing 301. The outer side of the front end of the first connecting rod 318 is fixedly connected to the second transmission wheel 317. The left and right sides of the belt 316 are rotatably connected to the inside of the first transmission wheel 315 and the second transmission wheel 317. The front and rear side walls of the housing 301 are threadedly connected to the support 319. The front and rear ends of the first connecting rod 318 are rotatably connected to the inside of the support 319. The front and rear ends of the first connecting rod 318 are fixedly connected to the eccentric weights 320. The two eccentric weights 320 are both set inside the two excitation boxes 311. When the first motor 313 is started, its output end drives the first rotating rod 314 to rotate, thereby causing the first transmission wheel 315 to rotate. Due to the connecting effect of belt 316, the rotation of the first transmission wheel 315 will drive the second transmission wheel 317 to rotate, thereby causing the first connecting rod 318 to rotate around its axis. The eccentric weights 320 at the front and rear ends of the first connecting rod 318 generate centrifugal force during rotation. Since the center of gravity of the eccentric weights 320 is off from the axis of rotation, the entire box 301 will vibrate periodically when rotating at high speed. The vibration is further amplified by the excitation box 311 connected to the box 301 and transmitted to the box 301 and the filter plate 302, thereby sieving the grain on the filter plate 302.

[0038] like Figure 1 - Figure 9 As shown, an outer box 5 is provided on the outer side of the right side wall of the conveyor belt 1. The bottom of the two connecting frames 4 are fixedly connected to the front and rear sides of the left side wall of the outer box 5. A second connecting rod 6 is connected through the inside of the outer box 5. A tension roller 14 is fixedly connected to the outer side of the second connecting rod 6. The outer side of the tension roller 14 is located inside the right side of the conveyor belt 1. The outer box 5 on the right side of the conveyor belt 1 provides external protection for the internal device. The second connecting rod 6 is connected to the tension roller 14. The tension roller 14 is located on the right side of the conveyor belt 1 to support the right side of the conveyor belt 1.

[0039] A protective cover 8 is provided on the outer side of the left side wall of the conveyor belt 1. A protective box 7 is fixedly connected to the front side wall of the protective cover 8. A second motor 9 is provided inside the protective box 7. A transmission device 10 is fixedly connected to the output end of the second motor 9. A second rotating rod 11 is fixedly connected to the rear end of the transmission device 10. A roller 12 is fixedly connected to the outer side of the second rotating rod 11. The outer side of the roller 12 is located inside the left side of the conveyor belt 1. The protective cover 8 is used to protect the conveying port on the left side of the conveyor belt 1, so that the grain can be accurately conveyed to the collection device through the guide plate 13. In addition, the protective cover 8 can be connected and fixed to the third support plate 2 on the front and rear sides of the conveyor belt 1 to support the front and rear sides of the conveyor belt 1.

[0040] Additionally, the protective box 7 provides external protection for the internal second motor 9. When the second motor 9 is started, the power output from the second motor 9 is transmitted to the transmission device 10. The transmission device 10, as a power conversion and transmission component, effectively transmits the rotational power of the motor to the second rotating rod 11. After receiving the power, the second rotating rod 11 begins to rotate around its axis. Since the roller 12 is fixedly connected to the outside of the second rotating rod 11, the roller 12 rotates together with the second rotating rod 11. The outside of the roller 12 is in contact with the inside of the left side of the conveyor belt 1. During the rotation of the roller 12, the friction between the roller 12 and the conveyor belt 1 drives the conveyor belt 1 to move.

[0041] A guide plate 13 is fixedly connected to the left side of the inside of the protective cover 8. A hopper 15 is set on the top right side of the conveyor belt 1. The discharge hole of the hopper 15 is set on the top of the box 301. The hopper 15 is used to store and discharge grain. When the bottom of the hopper 15 is opened, the grain falls accurately into the filter plate 302 inside the box 301 for sieving.

[0042] like Figure 10 - Figure 12 As shown, a base plate 16 is provided at the bottom of the conveyor belt 1, which supports the bottom of the entire device. First support plates 19 are fixedly connected to the front and rear sides of the top right side wall of the base plate 16. The interior of the two first support plates 19 is located on the outer sides of the front and rear ends of the second connecting rod 6. By rotatably connecting the front and rear ends of the second connecting rod 6 to the interior of the first support plates 19, when the device on the left side of the upper side wall of the base plate 16 drives the conveyor belt 1 to rise or fall, the second connecting rod 6 on the right side of the conveyor belt 1 will rotate inside the first support plates 19 to support the right side of the conveyor belt 1 and to prevent the conveyor belt 1 from being unable to be fixed during height adjustment, thus ensuring effective support and preventing height adjustment.

[0043] A wiring conduit 17 is fixedly connected to the front side wall of the base plate 16, and a control panel 18 is fixedly connected to the top of the wiring conduit 17. The wiring conduit 17 is used to protect the wiring from the outside, and the control panel 18 is used to control the entire device. A connecting block 21 is fixedly connected to the middle of the bottom wall of the two third support plates 2. A guide rail plate 22 is fixedly connected to the bottom of the connecting block 21. A device box 20 is fixedly connected to the upper side wall of the bottom plate 16. A third motor 23 is arranged on the left side inside the device box 20. A lead screw 24 is fixedly connected to the output end of the third motor 23. A second sleeve 25 is rotatably connected to the right end of the lead screw 24. The outer side of the right end of the second sleeve 25 is rotatably connected to the inside of the right side wall of the device box 20. A threaded sleeve 26 is slidably connected to the outer side of the lead screw 24. When the third motor 23 inside the device box 20 is started, its output end drives the lead screw 24 to rotate. Since the lead screw 24 and the threaded sleeve 26 are threaded together, the threaded sleeve 26 can slide left and right on the outer side of the lead screw 24 when the lead screw 24 rotates.

[0044] like Figure 10 - Figure 12 As shown, a fixing ring 27 is fixedly connected to the outer side of the threaded sleeve 26. A first support rod 28 is rotatably connected to the top outer side of the fixing ring 27. A connecting shaft 29 is rotatably connected to the top of the first support rod 28. The front and rear ends of the connecting shaft 29 are slidably connected to the inside of the guide plate 22. A second support plate 31 is fixedly connected to the inner right side wall of the device box 20. A second support rod 30 is rotatably connected to the middle of the first support rod 28. The other side of the second support rod 30 is rotatably connected to the inside of the second support plate 31. During the sliding process of the lead screw 24, the threaded sleeve 26 will generate linear motion along the axial direction of the lead screw 24. As the threaded sleeve 26 moves linearly, the first... The connection point between the first rod 28 and the fixed ring 27 also moves accordingly. Since the top of the first rod 28 is slidably connected to the guide rail plate 22 through the connecting shaft 29, and the middle part is rotatably connected to the second rod 30, and the second rod 30 is rotatably connected to the second support plate 31 in the device box 20, the linkage structure is achieved, so that the first rod 28 changes angle and produces lifting and lowering motion under the push of the threaded sleeve 26. The connecting shaft 29 at the top of the first rod 28 slides inside the guide rail plate 22. The guide rail plate 22 is connected to the third support plate 2 of the conveyor belt 1 through the connecting block 21, thereby transmitting the lifting and lowering motion of the first rod 28 to the conveyor belt 1.

[0045] It should be noted that this utility model is a grain conveying device. First, the first motor 313, the third motor 23, the control panel 18, and the second motor 9 are connected to an external power source to supply power to the device.

[0046] When grain is conveyed through the hopper 15 to the sieving mechanism 3 at the top right of the conveyor belt 1, it first falls onto the filter plate 302 inside the housing 301. At this time, the first motor 313 starts, and its output end drives the first rotating rod 314 to rotate, which in turn causes the first transmission wheel 315 to rotate. Due to the connection of the belt 316, the rotation of the first transmission wheel 315 will drive the second transmission wheel 317 to rotate, thereby causing the first connecting rod 318 to rotate around its axis. The eccentric weights 320 at the front and rear ends of the first connecting rod 318 generate centrifugal force during rotation. Since the center of gravity of the eccentric weights 320 is off from the axis of rotation, the entire housing 301 will vibrate periodically when rotating at high speed. The vibration is further amplified by the excitation box 311 connected to the housing 301 and transmitted to the housing 301 and the filter plate 302.

[0047] Under vibration, the grain continuously bounces and tumbles on the filter plate 302 and moves towards the guide plate 305 on the right. Smaller grain particles can pass through the sieve holes of the filter plate 302 and fall into the guide box 304, while larger impurities are screened along the guide plate 305 to the guide plate 305 on the right side of the box 301, so as to discharge the impurities into the interior of 1 and 301, thereby achieving the separation of grain and impurities.

[0048] The support frame 303 at the bottom of the housing 301 is connected to the connecting ring 308 by a spring 310 between the triangular block 306 and the connecting ring 308. The spring 310 acts as a buffer and auxiliary support, enabling the housing 301 to maintain a relatively stable structure during vibration, avoiding damage to the equipment or affecting the screening effect due to excessive vibration. At the same time, the support 319 provides stable support and rotational constraint for the first connecting rod 318, ensuring that the eccentric weight 320 can rotate stably to generate excitation force, ensuring that the entire screening mechanism 3 works continuously and efficiently, ultimately achieving the purpose of screening and purifying the grain. The screened grain can be connected to the subsequent conveying or processing links through the bottom connecting frame 4 of the guide box 304, realizing the removal of impurities and quality improvement during the grain conveying process.

[0049] The base plate 16 serves as the overall bottom support structure, providing a stable mounting foundation for other components. The wiring conduit 17 is used to lay various electrical lines, while the control panel 18 facilitates operators in controlling and setting parameters for the entire conveying device.

[0050] When the third motor 23 inside the device box 20 starts, its output end drives the lead screw 24 to rotate. Because the lead screw 24 and the threaded sleeve 26 are internally threaded, the threaded sleeve 26 can slide left and right on the outer side of the lead screw 24 when it rotates. The outer side of the threaded sleeve 26 is slidably connected to the first support rod 28 via a fixing ring 27. During the sliding of the lead screw 24, the threaded sleeve 26 will generate linear motion along the axial direction of the lead screw 24. As the threaded sleeve 26 moves linearly, the connection point between the first support rod 28 and the fixing ring 27 also moves accordingly. Since the top of the first support rod 28 is connected to the connecting shaft 2... 9 is slidably connected to the guide rail plate 22 and rotatably connected to the second support rod 30 in the middle. The second support rod 30 is rotatably connected to the second support plate 31 in the device box 20 to achieve the effect of linkage structure. This causes the first support rod 28 to change angle and generate lifting and lowering motion under the push of the threaded sleeve 26. The connecting shaft 29 at the top of the first support rod 28 slides inside the guide rail plate 22. The guide rail plate 22 is connected to the third support plate 2 of the conveyor belt 1 through the connecting block 21, thereby transmitting the lifting and lowering motion of the first support rod 28 to the conveyor belt 1.

[0051] The rotation direction of the lead screw 24 is controlled by the forward and reverse rotation of the third motor 23, thereby precisely controlling the height adjustment of the conveyor belt 1. In this way, the structure can flexibly adjust the height of the conveyor belt 1 according to actual needs, so that it can better connect with upstream and downstream equipment of different heights or adapt to different working site conditions, ensuring the smooth operation of the grain conveying process and improving the versatility and adaptability of the entire grain conveying device.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A grain conveying device, comprising a conveyor belt (1), characterized in that: The conveyor belt (1) has a third support plate (2) inside the front and rear side walls. The two third support plates (2) are threadedly connected to the front and rear sides of the right side walls. The conveyor belt (1) has a screening mechanism (3) on the top right side. The sieving mechanism (3) includes: a housing (301), four triangular blocks (306), a first motor (313), a belt (316), and a first connecting rod (318). A filter plate (302) is fixedly connected to the bottom wall of the housing (301). Support frames (303) are provided on both the front and rear sides of the bottom of the housing (301). A guide box (304) is fixedly connected to the bottom of the two support frames (303). The bottom outer side of the guide box (304) is threadedly connected to the inside of the two connecting frames (4). All four triangular blocks (306) are fixedly connected to... On the top left and right sides of the two support frames (303), the guide plate (305) is fixedly connected to the right side wall of the box (301) and the filter plate (302). The support rod (307) is connected through the left and right sides of the inside of the box (301). The left and right ends of the two support rods (307) are fixedly connected to the connecting rings (308). The upper side wall of the four triangular blocks (306) and the bottom wall of the four connecting rings (308) are fixedly connected to the first sleeve (309). The inside of each pair of upper and lower first sleeves (309) is fixedly connected to the spring (310).

2. The grain conveying device according to claim 1, characterized in that: Vibration boxes (311) are fixedly connected to both the front and rear sides of the housing (301). A top plate (312) is fixedly connected to the top of the housing (301). The bottom wall of the first motor (313) is fixedly connected to the upper side wall of the top plate (312). A first rotating rod (314) is fixedly connected to the output end of the first motor (313). A first transmission wheel (315) is fixedly connected to the front end of the first rotating rod (314). The front and rear ends of the first connecting rod (318) are both connected through the front and rear sides of the middle part of the housing (301). A second transmission wheel (317) is fixedly connected to the outer side of the front end of the first connecting rod (318). The left and right sides of the belt (316) are rotatably connected inside the first transmission wheel (315) and the second transmission wheel (317).

3. A grain conveying device according to claim 2, characterized in that: The front and rear side walls of the box (301) are threaded with supporters (319). The front and rear ends of the first connecting rod (318) are rotatably connected to the inside of the supporters (319). The front and rear ends of the first connecting rod (318) are fixedly connected with eccentric weights (320). The two eccentric weights (320) are both set inside the two excitation boxes (311).

4. A grain conveying device according to claim 1, characterized in that: An outer box (5) is provided on the outer side of the right side wall of the conveyor belt (1). The bottom of the two connecting frames (4) is fixedly connected to the front and rear sides of the left side wall of the outer box (5). A second connecting rod (6) is connected through the inside of the outer box (5). A tensioning roller (14) is fixedly connected to the outer side of the second connecting rod (6). The outer side of the tensioning roller (14) is located inside the right side of the conveyor belt (1). A protective cover (8) is provided on the outer side of the left side wall of the conveyor belt (1). A protective box (7) is fixedly connected to the front side wall of the protective cover (8).

5. A grain conveying device according to claim 4, characterized in that: The protective box (7) is equipped with a second motor (9), and the output end of the second motor (9) is fixedly connected to a transmission device (10). The rear end of the transmission device (10) is fixedly connected to a second rotating rod (11). The outer side of the second rotating rod (11) is fixedly connected to a roller (12). The outer side of the roller (12) is located inside the left side of the conveyor belt (1). The left side of the inner side of the protective cover (8) is fixedly connected to a guide plate (13). The top right side of the conveyor belt (1) is equipped with a hopper (15). The discharge hole of the hopper (15) is located at the top of the box body (301).

6. A grain conveying device according to claim 1, characterized in that: The bottom of the conveyor belt (1) is provided with a base plate (16). The top right side wall of the base plate (16) is fixedly connected with a first support plate (19) on both the front and rear sides. The interior of the two first support plates (19) is located on the outer sides of the front and rear ends of the second connecting rod (6). The front side wall of the base plate (16) is fixedly connected with a line pipe (17). The top of the line pipe (17) is fixedly connected with a control panel (18). The bottom wall of the two third support plates (2) is fixedly connected with a connecting block (21). The bottom of the connecting block (21) is fixedly connected with a guide rail plate (22).

7. A grain conveying device according to claim 6, characterized in that: The upper side wall of the base plate (16) is fixedly connected to a device box (20). A third motor (23) is provided on the left side inside the device box (20). A lead screw (24) is fixedly connected to the output end of the third motor (23). A second sleeve (25) is rotatably connected to the right end of the lead screw (24). The outer side of the right end of the second sleeve (25) is rotatably connected to the inside of the right side wall of the device box (20). A threaded sleeve (26) is slidably connected to the outer side of the lead screw (24).

8. A grain conveying device according to claim 7, characterized in that: A fixing ring (27) is fixedly connected to the outer side of the threaded sleeve (26). A first support rod (28) is rotatably connected to the top outer side of the fixing ring (27). A connecting shaft (29) is rotatably connected to the top of the first support rod (28). The front and rear ends of the connecting shaft (29) are slidably connected to the inside of the guide plate (22). A second support plate (31) is fixedly connected to the inner right side wall of the device box (20). A second support rod (30) is rotatably connected to the middle of the first support rod (28). The other side of the second support rod (30) is rotatably connected to the inside of the second support plate (31).

Images