A stepped three-stage conveying and cleaning device

Abstract

This utility model belongs to the field of stepped conveying and cleaning devices, specifically a stepped three-stage conveying and cleaning device, including a support plate, on which a first rotating roller is rotatably connected. This utility model achieves the function of rotating and conveying materials by utilizing the cooperation of a first motor and a first conveyor belt. When the second rotating roller rotates, it drives the first rotating roller to rotate simultaneously. During rotation, the first conveyor belt moves at a slower speed than the second conveyor belt, allowing for differential transmission of materials during transport. The slower transmission speed also prevents blockage caused by excessive material addition. Simultaneously, the gap between the first and second conveyor belts provides a channel for impurities or grains during cleaning, allowing the cleaned material to be discharged through the gap. Compared to traditional manual screening, this device offers greater convenience and practicality, significantly shortening the cleaning time and enabling cleaning operations to be completed during harvest.

Description

Technical Field

[0001] This utility model belongs to the field of stepped conveying and cleaning devices, specifically a stepped three-stage conveying and cleaning device. Background Technology

[0002] In agricultural production, the cleaning of grain crops after harvest is a crucial step in ensuring grain quality and safe storage. With the continuous improvement of agricultural mechanization, combine harvesters have been widely used. As an important component of combine harvesters, the performance of the wind-powered cleaning device directly affects the overall working effect of the machine, and therefore needs to be continuously improved and perfected.

[0003] In the existing technology, traditional stepped cleaning devices are prone to clogging during cleaning operations. When workers fill the packing material too quickly and exceed the load-bearing value, material will accumulate, making cleaning time-consuming and labor-intensive. At the same time, the cleaning steps are simple and the impurity removal efficiency is low, which leads to a decrease in conveying speed and an increase in maintenance difficulty.

[0004] Therefore, this utility model provides a stepped three-stage conveying and cleaning device. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A stepped three-stage conveying and cleaning device of this utility model includes a support plate, a first rotating roller rotatably connected inside the support plate, a first conveyor belt disposed on the outer wall of the first rotating roller, a first motor fixedly connected to the outer wall of the support plate, a second rotating roller fixedly connected to the output end of the first motor, and a second conveyor belt disposed on the outer wall of the second rotating roller. Through the above structure, the function of rotating and conveying materials is realized by the cooperation of the first motor and the first conveyor belt. When the second rotating roller rotates, it drives the first rotating roller to rotate simultaneously. During rotation, the first conveyor belt's conveying speed is slower than the second conveyor belt, allowing for differential transmission of materials during transport. The slower transmission speed also avoids blockage caused by excessively rapid material addition. Simultaneously, the gap between the first and second conveyor belts provides a channel for impurities or grains during cleaning, allowing the cleaned material to be discharged through the gap. Compared to traditional manual screening, this device has higher convenience and practicality in use, greatly shortening the cleaning time, and allowing the cleaning operation to be completed during harvest.

[0007] Preferably, the support plate has a sliding groove inside, a fixing block is fixed to the outer wall of the support plate, a second motor is fixed to the lower surface of the fixing block, a lead screw is fixed to the output end of the second motor, the outer wall of the lead screw is rotatably connected to the inside of the fixing block, a transmission block is threaded to the outer wall of the lead screw, a transmission frame is fixed to the outer wall of the transmission block, the inner wall of the transmission frame is slidably connected to the outer wall of the second rotating roller, and the outer wall of the second rotating roller is slidably connected to the inner wall of the sliding groove. Through the above structure, the second motor realizes the function of adjusting the height of the transmission frame. When the height of the transmission frame changes, the second rotating roller drives the second conveyor belt to rotate, thereby changing the distance between the second conveyor belt and the first conveyor belt. When the material is filled too quickly, blockage occurs. Manually cleaning the blockage is time-consuming and laborious, affecting the cleaning efficiency. Therefore, when the total weight of the material exceeds the load line, the distance is increased to reduce the risk of blockage in the transportation path. Within the load range, it will return to the initial position for transportation, improving the stability and operability of the device during use.

[0008] Preferably, the outer wall of the fixed block is fixedly connected to a limiting shaft, the outer wall of the limiting shaft is slidably connected to a limiting block, and the outer wall of the limiting block is fixedly connected to the outer wall of the transmission frame. Through the above structure, the limiting shaft plays a role in limiting the movement of the limiting block, so that the transmission frame maintains a fixed movement path and angle during the lifting and lowering process, thereby improving the stability of the transmission frame during lifting and lowering.

[0009] Preferably, a third motor is fixedly connected to the outer wall of the support plate, and a third rotating roller is fixedly connected to the output end of the third motor. A third conveyor belt is provided on the outer wall of the third rotating roller. Through the above structure, the cooperation of the third motor and the third rotating roller enables the third conveyor belt to transport materials at high speed. The rotation speed of the third rotating roller is faster than that of the first and second rotating rollers. The stepped differential transmission improves the cleaning efficiency of the material during throwing. At the same time, the material undergoes a second cleaning during the throwing process to the third conveyor belt. The second cleaning improves the purity of the material and reduces the content of impurities.

[0010] Preferably, a first connecting shaft is fixed to the outer wall of the second rotating roller, and a second connecting shaft is fixed to the end of the first rotating roller away from the fixed block. Both the outer walls of the first and second connecting shafts are provided with transmission chains. Through the above structure, the transmission chain realizes the function of synchronous transmission between the first and second connecting shafts, reducing power consumption. The uniform transmission speed also improves the stability during transportation. At the same time, the structural characteristics of the transmission chain enable the second conveyor belt to maintain the transmission effect after the rotation angle, improving the flexibility of the device during use.

[0011] Preferably, a support frame is fixed to the outer wall of the support plate, a cleaning fan is provided on the lower surface of the support frame, a cleaning frame is fixed to the lower surface of the support frame, and a guide pipe is fixed to the upper surface of the support frame. Through the above structure, the cleaning fan and the guide pipe work together to achieve the function of cleaning and throwing materials, so that the materials can be quickly cleaned of impurities during the throwing process, reducing the impurity content of the materials. At the same time, the structural characteristics of the cleaning frame can concentrate the airflow generated by the cleaning fan at a fixed position, improving the stability and accuracy of cleaning.

[0012] Preferably, the inner walls of both the transmission frame and the sliding groove are coated with a friction-reducing coating. Through the above structure, the inner walls of both the transmission frame and the sliding groove are coated with a friction-reducing coating, which reduces the friction between the transmission frame and the inner walls of the sliding groove, reduces the wear and tear on the structure caused by long-term friction, reduces maintenance costs, and improves the stability of the second rotating roller when it moves.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The stepped three-stage conveying and cleaning device of this utility model, through the above structure, realizes the function of rotating and conveying materials by cooperating with the first motor and the first conveyor belt. When the second rotating roller rotates, it will drive the first rotating roller to rotate at the same time. When rotating, the conveying speed of the first conveyor belt is slower than that of the second conveyor belt, so that the material can be transported at a differential speed. The slower conveying speed also avoids the blockage caused by the material being added too quickly. At the same time, the gap between the positions of the first and second conveyor belts provides a channel for impurities or grains during cleaning, so that the cleaned material can be discharged through the gap. Compared with traditional manual screening, this device has higher convenience and practicality in use, greatly shortens the cleaning time, and can complete the cleaning operation during harvest.

[0015] 2. The stepped three-stage conveying and cleaning device of this utility model, through the above structure, utilizes a second motor to adjust the height of the transmission frame. When the height of the transmission frame changes, the second rotating roller drives the second conveyor belt to rotate, thereby changing the distance between the second conveyor belt and the first conveyor belt. When the material fills too quickly and causes blockage, manual cleaning of the blockage is time-consuming and laborious, affecting the cleaning efficiency. Therefore, when the total weight of the material exceeds the load line, the distance is increased to reduce the risk of blockage in the transport path. Within the load range, it will return to the initial position for transport, improving the stability and operability of the device during use. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a schematic diagram of the transmission frame in this utility model;

[0019] Figure 3 This is a schematic diagram of the transmission chain in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the third transmission belt in this utility model;

[0021] Figure 5 This is a schematic diagram of the cleaning frame in this utility model.

[0022] In the diagram: 1. Support plate; 11. First rotating roller; 12. First conveyor belt; 13. First motor; 14. Second rotating roller; 15. Second conveyor belt; 2. Fixed block; 21. Second motor; 22. Lead screw; 23. Transmission block; 24. Transmission frame; 201. Sliding groove; 202. Limiting block; 203. Limiting shaft; 3. Third motor; 31. Third rotating roller; 32. Third conveyor belt; 4. First connecting shaft; 41. Second connecting shaft; 42. Transmission chain; 5. Support frame; 51. Cleaning fan; 52. Cleaning frame; 53. Guide tube. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Specific implementation examples are given below.

[0025] like Figures 1 to 4As shown in the embodiment of this utility model, a stepped three-stage conveying and cleaning device includes a support plate 1. A first rotating roller 11 is rotatably connected inside the support plate 1. A first conveyor belt 12 is provided on the outer wall of the first rotating roller 11. A first motor 13 is fixedly connected to the outer wall of the support plate 1. A second rotating roller 14 is fixedly connected to the output end of the first motor 13. A second conveyor belt 15 is provided on the outer wall of the second rotating roller 14. During operation, when cleaning and transportation are required, the operator can start the first motor 13. The start of the first motor 13 drives the second rotating roller 14 to rotate. When the second rotating roller 14 rotates, it drives the second conveyor belt 15 on its outer wall to rotate. At the same time, the rotation of the second rotating roller 14 also drives the first rotating roller 11 to rotate. The rotation of the first rotating roller 11 drives the first conveyor belt 12 on its outer wall to rotate. The transmission speed of the first conveyor belt 12 is higher than that of the second conveyor belt 15. The slow transmission speed allows for differential transmission of the transported grains, with the support plate 1 providing overall support and fixation. Through this structure, the first motor 13 and the first conveyor belt 12 work together to achieve the function of rotating and conveying materials. When the second rotating roller 14 rotates, it drives the first rotating roller 11 to rotate simultaneously. During rotation, the first conveyor belt 12's transmission speed is slower than the second conveyor belt 15, allowing for differential transmission of materials. The slower transmission speed also prevents excessive material addition and blockage. Simultaneously, the gap between the first conveyor belt 12 and the second conveyor belt 15 provides a channel for impurities or grains during cleaning, allowing the cleaned material to be discharged through the gap. Compared to traditional manual screening, this device offers greater convenience and practicality, significantly reducing the cleaning time and enabling cleaning operations to be completed during harvest.

[0026] like Figures 1 to 2As shown, a sliding groove 201 is provided inside the support plate 1. A fixing block 2 is fixedly connected to the outer wall of the support plate 1. A second motor 21 is fixedly connected to the lower surface of the fixing block 2. A lead screw 22 is fixedly connected to the output end of the second motor 21. The outer wall of the lead screw 22 is rotatably connected to the inside of the fixing block 2. A transmission block 23 is threadedly connected to the outer wall of the lead screw 22. A transmission frame 24 is fixedly connected to the outer wall of the transmission block 23. The inner wall of the transmission frame 24 is slidably connected to the outer wall of the second rotating roller 14. The outer wall of the second rotating roller 14 is slidably connected to the inner wall of the sliding groove 201. During operation, when it is necessary to adjust the distance between the second conveyor belt 15 and the first conveyor belt 12, the operator can start the second motor 21. The start of the second motor 21 drives the lead screw 22 to rotate. The rotation of the lead screw 22 drives the transmission block 23, which is threadedly connected to its outer wall, to move up and down. When the transmission block 23 moves, it drives the transmission frame 24 to move. The movement of the transmission frame 24 causes the second rotating roller 14 to slide in the sliding groove 201. The inner wall of 1, when the second rotating roller 14 moves, drives the second conveyor belt 15 to make a circular motion with the second rotating roller 14 on the other side as the center, so that the angle of the second conveyor belt 15 changes, and thus the distance between the second conveyor belt 15 and the first conveyor belt 12 changes. The support plate 1 and the fixing block 2 play the role of overall support and fixation. Through the above structure, the second motor 21 realizes the function of adjusting the height of the transmission frame 24. When the height of the transmission frame 24 changes, the second rotating roller 14 drives the second conveyor belt 15 to rotate, so that the distance between the second conveyor belt 15 and the first conveyor belt 12 changes. When the material is filled too fast, blockage occurs. Relying on manual blockage removal is time-consuming and laborious, affecting the cleaning efficiency. Therefore, when the total weight of the material exceeds the load line, the distance is increased to reduce the risk of blockage in the transportation path. Within the load range, it will return to the initial position for transportation, which improves the stability and operability of the device during use.

[0027] like Figures 1 to 2 As shown, a limiting shaft 203 is fixedly connected to the outer wall of the fixed block 2, and a limiting block 202 is slidably connected to the outer wall of the limiting shaft 203. The outer wall of the limiting block 202 is fixedly connected to the outer wall of the transmission frame 24. During operation, when the transmission frame 24 moves up and down, it will drive the limiting block 202 to slide on the outer wall of the limiting shaft 203, so that the limiting block 202 remains stable during the movement, improving the stability of the transmission frame 24 when it rises and falls. The fixed block 2 plays the role of supporting and fixing the limiting shaft 203. Through the above structure, the limiting shaft 203 plays the role of limiting the movement of the limiting block 202, so that the transmission frame 24 maintains a fixed movement path and angle during the rising and falling process, improving the stability of the transmission frame 24 when it rises and falls.

[0028] like Figures 2 to 4As shown, a third motor 3 is fixedly connected to the outer wall of the support plate 1, and a third rotating roller 31 is fixedly connected to the output end of the third motor 3. A third conveyor belt 32 is provided on the outer wall of the third rotating roller 31. During operation, when cleaning and transporting, the operator can start the third motor 3. The start of the third motor 3 drives the third rotating roller 31 to rotate, and the rotation of the third rotating roller 31 drives the third conveyor belt 32 on its outer wall to move, so that the thrown material can be quickly transported after landing on the third conveyor belt 32. During the throwing process, the distance between the second conveyor belt 15 and the third conveyor belt 32 is used to perform a second cleaning of the thrown material. The material conveying speed is faster than that of the second conveyor belt 15. Differential transmission improves the material cleaning efficiency, and the support plate 1 plays a role in overall support and fixation. Through the above structure, the third motor 3 and the third rotating roller 31 cooperate to enable the third conveyor belt 32 to transport materials at high speed. The rotation speed of the third rotating roller 31 is faster than that of the first rotating roller 11 and the second rotating roller 14. The stepped differential transmission improves the cleaning efficiency of the material during throwing. At the same time, the material undergoes a second cleaning during the throwing process to the third conveyor belt 32. The second cleaning improves the purity of the material and reduces the content of impurities.

[0029] like Figures 3 to 4 As shown, a first connecting shaft 4 is fixedly connected to the outer wall of the second rotating roller 14, and a second connecting shaft 41 is fixedly connected to the end of the first rotating roller 11 away from the fixed block 2. Both the first connecting shaft 4 and the second connecting shaft 41 are provided with transmission chains 42 on their outer walls. During operation, when the second rotating roller 14 rotates, it drives the first connecting shaft 4 to rotate. When the first connecting shaft 4 rotates, it drives the second connecting shaft 41 to rotate through the transmission chains 42 on its outer wall. The rotation of the second connecting shaft 41 drives the first rotating roller 11 to rotate, so that the second rotating roller 14 and the first rotating roller 11 rotate simultaneously and at the same speed. Through the above structure, the transmission chain 42 realizes the function of synchronous transmission between the first connecting shaft 4 and the second connecting shaft 41, reducing power consumption. The uniform transmission speed also improves the stability during transportation. At the same time, the structural characteristics of the transmission chain 42 enable the second conveyor belt 15 to maintain the transmission effect after the rotation angle, improving the flexibility of the device during use.

[0030] like Figure 5As shown, a support frame 5 is fixed to the outer wall of the support plate 1. A cleaning fan 51 is installed on the lower surface of the support frame 5, a cleaning frame 52 is fixed to the lower surface of the support frame 5, and a guide pipe 53 is fixed to the upper surface of the support frame 5. During operation, when materials are being thrown during transportation, the operator can start the cleaning fan 51. The cleaning fan 51 blows airflow to clean the thrown materials, reducing the impurity content. The cleaning frame 52 enhances the concentration of airflow, and the guide pipe 53 connects to the outside. Through the above structure, the cleaning fan 51 and the guide pipe 53 work together to clean the thrown materials, enabling the materials to be quickly cleaned and impurities reduced during the throwing process. At the same time, the structural characteristics of the cleaning frame 52 allow the airflow generated by the cleaning fan 51 to be concentrated at a fixed position, improving the stability and accuracy of the cleaning process.

[0031] like Figures 1 to 3 As shown, the inner walls of both the transmission frame 24 and the sliding groove 201 are coated with a friction-reducing coating. During operation, the friction-reducing coating on the inner walls of both the transmission frame 24 and the sliding groove 201 reduces surface friction, improves the smoothness of the second rotating roller 14 during sliding, reduces the wear and tear on the structure caused by long-term friction, and extends its service life. Through the above structure, the friction-reducing coating on the inner walls of both the transmission frame 24 and the sliding groove 201 reduces the friction, reduces the wear and tear on the structure caused by long-term friction, reduces maintenance costs, and improves the stability of the second rotating roller 14 during movement.

[0032] During operation, when cleaning and transportation are required, the operator can start the first motor 13. The first motor 13 drives the second rotating roller 14 to rotate, which in turn drives the second conveyor belt 15 mounted on its outer wall to rotate. Simultaneously, the rotation of the second rotating roller 14 also drives the first rotating roller 11 to rotate, which in turn drives the first conveyor belt 12 mounted on its outer wall to rotate. The conveying speed of the first conveyor belt 12 is slower than that of the second conveyor belt 15, allowing for differential speed transport of the grain. The support plate 1 provides overall support and fixation. When it is necessary to adjust the distance between the second conveyor belt 15 and the first conveyor belt 12 during operation, the operator can start the second motor 21. The second motor 21 starts and drives the lead screw 22 to rotate. The rotation of the lead screw 22 causes the transmission block 23, which is threaded to its outer wall, to move up and down. When the transmission block 23 moves, it drives the transmission frame 24 to move. The movement of the transmission frame 24 causes the second rotating roller 14 to slide on the inner wall of the sliding groove 201. When the second rotating roller 14 moves, it causes the second conveyor belt 15 to make a circular motion around the second rotating roller 14 on the other side, which changes the angle of the second conveyor belt 15 and thus changes the distance between the second conveyor belt 15 and the first conveyor belt 12. The support plate 1 and the fixing block 2 play a role in overall support and fixation. During operation, when the transmission frame 24 moves up and down, it will cause the limiting block 202 to slide on the outer wall of the limiting shaft 203, so that the limiting block 202 maintains stability during movement, improving the stability of the transmission frame 24 during lifting. The fixed block 2 supports and fixes the limiting shaft 203. During operation, when cleaning and transporting, the operator can start the third motor 3. The third motor 3 drives the third rotating roller 31 to rotate, which in turn moves the third conveyor belt 32 mounted on its outer wall. This allows the thrown material to be quickly transported after landing on the third conveyor belt 32. During the throwing process, the distance between the second conveyor belt 15 and the third conveyor belt 32 is used to perform a second cleaning of the thrown material. The third conveyor belt 32 transports materials at a faster speed than the second conveyor belt 15, utilizing differential speed transmission to improve material handling. The cleaning efficiency is improved, with the support plate 1 providing overall support and fixation. During operation, when the second rotating roller 14 rotates, it drives the first connecting shaft 4 to rotate. The rotation of the first connecting shaft 4, in turn, drives the second connecting shaft 41 to rotate via the transmission chain 42 on the outer wall of the air duct. The rotation of the second connecting shaft 41 drives the first rotating roller 11 to rotate, so that the second rotating roller 14 and the first rotating roller 11 rotate simultaneously at the same speed. During operation, when the material is being thrown during transportation, the operator can start the cleaning fan 51. The cleaning fan 51 blows airflow to clean the thrown material, reducing the impurity content. The cleaning frame 52 enhances airflow concentration, and the guide tube 53 connects to the outside.During operation, the inner walls of both the transmission frame 24 and the sliding groove 201 are coated with an anti-friction coating, reducing surface friction, improving the smoothness of the second rotating roller 14 during sliding, reducing long-term frictional wear on the structure, and extending its service life.

[0033] 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A stepped three-stage conveying and cleaning device, comprising a support plate (1), characterized in that: The support plate (1) is rotatably connected to a first rotating roller (11), and a first conveyor belt (12) is provided on the outer wall of the first rotating roller (11). A first motor (13) is fixedly connected to the outer wall of the support plate (1), and a second rotating roller (14) is fixedly connected to the output end of the first motor (13). A second conveyor belt (15) is provided on the outer wall of the second rotating roller (14).

2. The stepped three-stage conveying and cleaning device according to claim 1, characterized in that: The support plate (1) has a sliding groove (201) inside. A fixing block (2) is fixed to the outer wall of the support plate (1). A second motor (21) is fixed to the lower surface of the fixing block (2). A lead screw (22) is fixed to the output end of the second motor (21). The outer wall of the lead screw (22) is rotatably connected to the inside of the fixing block (2). A transmission block (23) is threaded to the outer wall of the lead screw (22). A transmission frame (24) is fixed to the outer wall of the transmission block (23). The inner wall of the transmission frame (24) is slidably connected to the outer wall of the second rotating roller (14). The outer wall of the second rotating roller (14) is slidably connected to the inner wall of the sliding groove (201).

3. The stepped three-stage conveying and cleaning device according to claim 2, characterized in that: The outer wall of the fixed block (2) is fixedly connected to the limiting shaft (203), the outer wall of the limiting shaft (203) is slidably connected to the limiting block (202), and the outer wall of the limiting block (202) is fixedly connected to the outer wall of the transmission frame (24).

4. The stepped three-stage conveying and cleaning device according to claim 1, characterized in that: A third motor (3) is fixed to the outer wall of the support plate (1), and a third rotating roller (31) is fixed to the output end of the third motor (3). A third conveyor belt (32) is provided on the outer wall of the third rotating roller (31).

5. A stepped three-stage conveying and cleaning device according to claim 1, characterized in that: The outer wall of the second rotating roller (14) is fixed with a first connecting shaft (4), and the end of the first rotating roller (11) away from the fixed block (2) is fixed with a second connecting shaft (41). The outer walls of the first connecting shaft (4) and the second connecting shaft (41) are both provided with transmission chains (42).

6. The stepped three-stage conveying and cleaning device according to claim 1, characterized in that: A support frame (5) is fixed to the outer wall of the support plate (1). A cleaning fan (51) is provided on the lower surface of the support frame (5). A cleaning frame (52) is fixed to the lower surface of the support frame (5). A guide tube (53) is fixed to the upper surface of the support frame (5).

7. A stepped three-stage conveying and cleaning device according to claim 2, characterized in that: The inner walls of the transmission frame (24) and the sliding groove (201) are both coated with a friction-reducing coating.

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