Intelligent grain quarantine sampling device

Abstract

The application relates to the technical field of grain quarantine, and discloses an intelligent grain quarantine sampling device, which comprises a bottom frame, a quarantine cylinder is fixedly assembled at the top of the bottom frame, a sorting cylinder is fixedly assembled at the top of the inner wall of the bottom frame, an auxiliary motor is fixedly assembled on the inner wall of the sorting cylinder, an auxiliary rod is fixedly sleeved on the output shaft of the auxiliary motor, a gas pump is fixedly assembled at the bottom of the auxiliary rod, and the gas outlet of the gas pump is in communication with the inner wall of the auxiliary rod. Through the cooperation of the quarantine cylinder and the transportation cylinder, the push plate is driven to move by the electric telescopic rod, so that the grain in the bottom frame is driven to move to the inside of the transportation cylinder by the push plate, the fan blade group is driven to rotate by the guide motor, so that the grain in the transportation cylinder is moved on the inner wall of the transportation cylinder by the fan blade group, the grain is limited by the guide ventilation plate, then the grain is stably moved to the inner wall of the quarantine cylinder by the air supply fan blade, and efficient sampling of the grain is realized.

Description

Technical Field

[0001] This invention relates to the field of grain quarantine technology, specifically to an intelligent grain quarantine sampling device. Background Technology

[0002] Grain quarantine is the on-site inspection and quarantine conducted by the quarantine department on imported grains. Customs officers need to check on-site whether the grains are moldy, spoiled, or carry harmful substances such as insects and grass seeds, in order to assist in the efficient and stable quarantine of grains.

[0003] In the traditional grain quarantine process, customs officers usually take large-scale samples of grain and then conduct quarantine on the sampled grain. This makes the traditional grain quarantine process time-consuming and labor-intensive, which affects the efficiency of the traditional grain quarantine inspection. In order to effectively reduce the risk to sampling personnel and adapt to the on-site rapid quarantine inspection and sample retention re-inspection work required for loading of wharf cargo at the hopper, an intelligent grain quarantine sampling device is needed. Summary of the Invention

[0004] This invention provides an intelligent grain quarantine sampling device to solve the problems mentioned in the background art.

[0005] This invention provides the following technical solution: an intelligent grain quarantine sampling device, comprising a base frame, a quarantine cylinder fixedly mounted on the top of the base frame, a sorting cylinder fixedly mounted on the top of the inner wall of the base frame, an auxiliary motor fixedly mounted on the inner wall of the sorting cylinder, an auxiliary rod fixedly sleeved on the output shaft of the auxiliary motor, an air pump fixedly mounted on the bottom of the auxiliary rod, and the air outlet of the air pump communicating with the inner wall of the auxiliary rod, a tension spring fixedly connected to the bottom of the inner wall of the auxiliary rod, and a push rod fixedly connected to the top of the tension spring, a transport cylinder fixedly mounted on the side of the base frame, and the end of the transport cylinder away from the base frame communicating with the inner wall of the quarantine cylinder, and an annular groove opened on the top of the quarantine cylinder, with a sliding rod slidably connected to the inner wall of the annular groove.

[0006] As a preferred embodiment of the present invention, a connecting groove is provided at the top of the sorting cylinder, and a sorting groove is provided at the bottom of the inner wall of the quarantine cylinder. The inner wall of the connecting groove is connected to the inner wall of the sorting groove, and the shape and size of the inner wall of the sorting groove are completely consistent with the shape and size of the inner wall of the connecting groove. The outer edge of the push rod is slidably connected to the inner wall of the connecting groove and the inner wall of the sorting groove.

[0007] As a preferred embodiment of the present invention, a guide frame is fixedly mounted on the top of the transport cylinder, and the inner wall of the guide frame is connected to the inner wall of the transport cylinder. A guide motor is fixedly mounted on the top of the guide frame, and a fan blade assembly is fixedly sleeved on the output shaft of the guide motor. A guide ventilation plate is fixedly mounted on the inner wall of the guide frame.

[0008] As a preferred embodiment of the present invention, an air supply duct is fixedly mounted on the inner wall of the transport cylinder, an air supply motor is fixedly mounted on the side of the air supply duct, and the output shaft of the air supply motor is fixedly sleeved with an air supply fan blade.

[0009] As a preferred embodiment of the present invention, a fixing plate is fixedly mounted on the side of the guide frame, and a stirring motor is fixedly mounted on the bottom of the fixing plate. The output shaft of the stirring motor is fixedly sleeved with a stirring blade, and an electromagnet plate is fixedly mounted on the side of the stirring blade.

[0010] As a preferred embodiment of the present invention, a ball bearing is movably sleeved on the inner wall of the slide rod, and the outer edge of the ball bearing is slidably connected to the inner wall of the annular groove. A connecting rod is fixedly mounted on the top of the slide rod, and an auxiliary stirring plate is fixedly mounted on the bottom of the connecting rod. The side of the auxiliary stirring plate is rotatably connected to the inner wall of the quarantine cylinder. An electromagnet plate two is fixedly mounted on the side of the auxiliary stirring plate, and the shape and size of the side of the electromagnet plate two are completely consistent with the shape and size of the side of the electromagnet plate one. The side of the electromagnet plate two is attracted to the side of the electromagnet plate one.

[0011] As a preferred embodiment of the present invention, an electric telescopic rod is fixedly mounted on the side of the bottom frame, and the outer edge of the output end of the electric telescopic rod is slidably connected to the inner wall of the bottom frame. A push plate is fixedly mounted on the output end of the electric telescopic rod.

[0012] As a preferred embodiment of the present invention, a fixing frame is fixedly mounted on the bottom of the inner wall of the quarantine tube, a sliding plate is slidably connected to the inner wall of the fixing frame, a threaded rod is rotatably sleeved on the inner wall of the fixing frame, and a rotating shaft is fixedly mounted on the top of the threaded rod.

[0013] As a preferred embodiment of the present invention, there are two threaded rods, and the bottoms of the two threaded rods are rotatably connected to the bottom of the inner wall of the fixed frame and the top of the stirring motor, respectively. There are two rotating shafts, and the bottoms of the two rotating shafts are fixedly assembled to the tops of the two threaded rods, respectively. A lifting motor is fixedly assembled to the top of the fixed frame, and the output shaft of the lifting motor is fixedly sleeved with the inner wall of the threaded rod near the stirring motor. A transmission belt is movably sleeved on the outer edge of the rotating shaft.

[0014] As a preferred embodiment of the present invention, a large target camera is fixedly mounted on the bottom of the slide plate, a supplementary light is provided on the side of the large target camera, and the top of the supplementary light is fixedly mounted to the bottom of the slide plate. A weighing sensor is fixedly mounted on the inner wall of the bottom of the sorting cylinder.

[0015] The present invention has the following beneficial effects: 1. This intelligent grain quarantine sampling device uses a quarantine cylinder and a transport cylinder in conjunction. An electric telescopic rod drives a push plate to move, which in turn moves the grain inside the bottom frame into the transport cylinder. A guide motor drives a fan blade assembly to rotate, which in turn assists the grain inside the transport cylinder to move along the inner wall of the cylinder. A guide ventilation plate helps limit the grain movement, and then the blower fan blades help the grain move stably into the inner wall of the quarantine cylinder, thus achieving efficient grain sampling.

[0016] 2. This intelligent grain quarantine sampling device uses a stirring motor and stirring blades in combination. The stirring motor drives the stirring blades to rotate, thereby assisting in the movement of grain inside the quarantine cylinder. Electromagnetic plates one and two are energized to attract the grain, which in turn drives the stirring blades to rotate the auxiliary stirring plate inside the quarantine cylinder. The auxiliary motor then drives the auxiliary rod to rotate, and an air pump supplies air into the auxiliary rod. This pusher pushes the grain blocked in the inner wall of the sorting trough, thus helping smaller grains and other residues to fall steadily into the inner wall of the sorting cylinder.

[0017] 3. This intelligent grain quarantine sampling device uses a lifting motor and a rotating shaft in combination. The lifting motor drives the threaded rod to rotate through the rotating shaft, which in turn drives the sliding plate to move down, thereby moving the large target camera closer to the sampled grain and taking stable pictures of the sampled grain for auxiliary quarantine.

[0018] 4. This intelligent grain quarantine sampling device uses a sorting cylinder and a quarantine cylinder in combination. It uses a weighing sensor on the inner wall of the quarantine cylinder to weigh the unqualified products in the sampled grain, thereby stably calculating the proportion of unqualified products in the sampled grain and thus stably carrying out grain quarantine. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the front section structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the internal structure of the sorting cylinder of the present invention; Figure 5 This is a schematic diagram of the structure of the present invention from another angle; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B; Figure 7 This is a schematic diagram of the orthographic section of the fixing frame of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point C.

[0020] In the diagram: 1. Base frame; 2. Quarantine cylinder; 3. Sorting cylinder; 4. Auxiliary motor; 5. Auxiliary rod; 6. Air pump; 7. Tension spring; 8. Push rod; 9. Connecting groove; 10. Sorting groove; 11. Transport cylinder; 12. Guide frame; 13. Guide motor; 14. Fan blade assembly; 15. Guide ventilation plate; 16. Air supply duct; 17. Air supply fan blade; 18. Stirring motor; 19. Stirring blade; 20. Electromagnetic plate one; 21. Electromagnetic plate two; 22. Auxiliary stirring plate; 23. Annular groove; 24. Slide rod; 25. Connecting rod; 26. Electric telescopic rod; 27. Push plate; 28. Fixing frame; 29. ​​Slide plate; 30. Threaded rod; 31. Rotating shaft; 32. Transmission belt; 33. Lifting motor; 34. Large target camera; 35. Fill light. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-8 An intelligent grain quarantine sampling device includes a base frame 1, a quarantine cylinder 2 fixedly mounted on the top of the base frame 1, a sorting cylinder 3 fixedly mounted on the top of the inner wall of the base frame 1, an auxiliary motor 4 fixedly mounted on the inner wall of the sorting cylinder 3, an auxiliary rod 5 fixedly sleeved on the output shaft of the auxiliary motor 4, an air pump 6 fixedly mounted on the bottom of the auxiliary rod 5, and the air outlet of the air pump 6 communicating with the inner wall of the auxiliary rod 5, a tension spring 7 fixedly connected to the bottom of the inner wall of the auxiliary rod 5, and a push rod 8 fixedly connected to the top of the tension spring 7. A transport cylinder 11 is fixedly mounted on the side of the bottom frame 1, and the end of the transport cylinder 11 away from the bottom frame 1 is connected to the inner wall of the quarantine cylinder 2. An annular groove 23 is opened on the top of the quarantine cylinder 2, and a sliding rod 24 is slidably connected to the inner wall of the annular groove 23. Through the cooperation of the tension spring 7 and the push rod 8, the tension spring 7 pulls the push rod 8, so that the push rod 8 can be stably reset after it moves. A connecting pipe is fixedly mounted on the inner wall of the sorting cylinder 3, so as to assist the stable transportation of the quarantined grain out of the sorting cylinder 3.

[0023] In a preferred embodiment, a connecting groove 9 is provided at the top of the sorting cylinder 3, and a sorting groove 10 is provided at the bottom of the inner wall of the quarantine cylinder 2. The inner wall of the connecting groove 9 is connected to the inner wall of the sorting groove 10, and the shape and size of the inner wall of the sorting groove 10 are completely consistent with the shape and size of the inner wall of the connecting groove 9. The outer edge of the push rod 8 is slidably connected to the inner wall of the connecting groove 9 and the inner wall of the sorting groove 10. Through the cooperation of the connecting groove 9 and the sorting groove 10, the inner wall of the connecting groove 9 is connected to the inner wall of the sorting groove 10, thereby assisting the push rod 8 to stably pass through the inner wall of the connecting groove 9 and push the grain blocked in the inner wall of the sorting groove 10.

[0024] In a preferred embodiment, a guide frame 12 is fixedly mounted on the top of the conveying cylinder 11, and the inner wall of the guide frame 12 is connected to the inner wall of the conveying cylinder 11. A guide motor 13 is fixedly mounted on the top of the guide frame 12, and a fan blade assembly 14 is fixedly sleeved on the output shaft of the guide motor 13. A guide ventilation plate 15 is fixedly mounted on the inner wall of the guide frame 12. By adding the guide ventilation plate 15, the fan blade assembly 14 can stably deliver air to the inside of the conveying cylinder 11 while preventing the grain from moving into the inside of the guide frame 12.

[0025] In a preferred embodiment, an air supply duct 16 is fixedly mounted on the inner wall of the transport cylinder 11, and an air supply motor is fixedly mounted on the side of the air supply duct 16. The output shaft of the air supply motor is fixedly sleeved with an air supply fan blade 17. By cooperating with the air supply motor and the air supply duct 16, the air supply motor rotates in the inner wall of the air supply duct 16, thereby assisting the grain inside the transport cylinder 11 to move stably into the quarantine cylinder 2.

[0026] In a preferred embodiment, a fixing plate is fixedly mounted on the side of the guide frame 12, and a stirring motor 18 is fixedly mounted on the bottom of the fixing plate. The output shaft of the stirring motor 18 is fixedly sleeved with a stirring blade 19, and an electromagnet plate 20 is fixedly mounted on the side of the stirring blade 19. Through the cooperation of the stirring motor 18 and the stirring blade 19, the stirring motor 18 drives the stirring blade 19 to rotate, thereby assisting the stirring blade 19 in driving the grain inside the quarantine cylinder 2 to move stably and avoid the grain from piling up and being unable to be quarantined stably.

[0027] In a preferred embodiment, a ball bearing is movably fitted onto the inner wall of the slide rod 24, and the outer edge of the ball bearing is slidably connected to the inner wall of the annular groove 23. A connecting rod 25 is fixedly mounted on the top of the slide rod 24, and an auxiliary stirring plate 22 is fixedly mounted on the bottom of the connecting rod 25. The side of the auxiliary stirring plate 22 is rotatably connected to the inner wall of the quarantine cylinder 2. An electromagnet plate 21 is fixedly mounted on the side of the auxiliary stirring plate 22, and the shape and size of the side of the electromagnet plate 21 are completely consistent with the shape and size of the side of the electromagnet plate 20. The side of the electromagnet plate 21 is attracted to the side of the electromagnet plate 20. Through the cooperation of the electromagnet plate 21 and the electromagnet plate 20, the side of the electromagnet plate 20 is attracted to the side of the electromagnet plate 21, thereby using the stirring blade 19 to drive the auxiliary stirring plate 22 to rotate stably.

[0028] In a preferred embodiment, an electric telescopic rod 26 is fixedly mounted on the side of the bottom frame 1, and the outer edge of the output end of the electric telescopic rod 26 is slidably connected to the inner wall of the bottom frame 1. A push plate 27 is fixedly mounted on the output end of the electric telescopic rod 26. Through the cooperation of the electric telescopic rod 26 and the push plate 27, the electric telescopic rod 26 drives the push plate 27 to move, thereby preventing the push plate 27 from pushing the grain inside the bottom frame 1 to be stably transported to the inside of the transport cylinder 11.

[0029] In a preferred embodiment, a fixing frame 28 is fixedly mounted on the bottom of the inner wall of the quarantine tube 2. A sliding plate 29 is slidably connected to the inner wall of the fixing frame 28. A threaded rod 30 is rotatably sleeved on the inner wall of the fixing frame 28. A rotating shaft 31 is fixedly mounted on the top of the threaded rod 30. Through the cooperation between the threaded rod 30 and the sliding plate 29, the outer edge of the threaded rod 30 is threadedly connected to the inner wall of the sliding plate 29, thereby stabilizing and assisting the sliding plate 29 in adjusting up and down.

[0030] In a preferred embodiment, there are two threaded rods 30, and the bottoms of the two threaded rods 30 are rotatably connected to the bottom of the inner wall of the fixed frame 28 and the top of the stirring motor 18, respectively. There are two rotating shafts 31, and the bottoms of the two rotating shafts 31 are fixedly assembled to the tops of the two threaded rods 30, respectively. A lifting motor 33 is fixedly assembled to the top of the fixed frame 28, and the output shaft of the lifting motor 33 is fixedly sleeved with the inner wall of the threaded rod 30 near the end of the stirring motor 18. A transmission belt 32 is movably sleeved on the outer edge of the rotating shaft 31. Through the cooperation of the lifting motor 33 and the rotating shaft 31, the lifting motor 33 drives the rotating shaft 31 to rotate stably.

[0031] In a preferred embodiment, a large target camera 34 is fixedly mounted on the bottom of the slide plate 29, and a supplementary light 35 is provided on the side of the large target camera 34. The top of the supplementary light 35 is fixedly mounted to the bottom of the slide plate 29. A weighing sensor is fixedly mounted on the inner wall of the bottom of the sorting cylinder 3. By adding the weighing sensor, the weight of the unqualified products inside the sampled grain can be stably detected, and the proportion of unqualified grain can be stably calculated.

[0032] Working principle: When the device is in use, the electric telescopic rod 26 drives the push plate 27 to move, thereby moving the grain inside the bottom frame 1 into the conveying cylinder 11. The guide motor 13 drives the fan blade assembly 14 to rotate, thereby assisting the grain inside the conveying cylinder 11 to move along the inner wall of the conveying cylinder 11. The guide ventilation plate 15 assists in limiting the grain movement. Then, the blower fan blades 17 assist in the stable movement of the grain into the inner wall of the quarantine cylinder 2, thereby achieving efficient grain sampling. The stirring motor 18 drives the stirring blades 19 to rotate, thereby assisting the grain movement inside the quarantine cylinder 2. The electromagnet plates 20 and 21 are energized to attract the grain, thereby using the stirring blades 19 to move the grain. The auxiliary stirring plate 22 rotates within the inner wall of the quarantine cylinder 2. The auxiliary motor 4 then drives the auxiliary rod 5 to rotate, and the air pump 6 supplies air to the inside of the auxiliary rod 5. This allows the push rod 8 to push the grain blocked in the inner wall of the sorting trough 10, thus helping smaller grains and other residues to fall stably into the inner wall of the sorting cylinder 3. The lifting motor 33 drives the threaded rod 30 to rotate via the rotating shaft 31, which in turn drives the slide plate 29 to move downwards. This causes the large target camera 34 to approach the sampled grain and stably capture a sampling image for auxiliary quarantine. The weighing sensor on the inner wall of the quarantine cylinder 2 weighs the non-conforming grain samples, thus stably calculating the proportion of non-conforming grain samples and conducting stable grain quarantine.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent grain quarantine sampling device, comprising a base frame (1), characterized in that: The top of the bottom frame (1) is fixedly fitted with a quarantine tube (2), the top of the inner wall of the bottom frame (1) is fixedly fitted with a sorting tube (3), the inner wall of the sorting tube (3) is fixedly fitted with an auxiliary motor (4), the output shaft of the auxiliary motor (4) is fixedly sleeved with an auxiliary rod (5), the bottom of the auxiliary rod (5) is fixedly fitted with an air pump (6), and the air outlet of the air pump (6) is connected to the inner wall of the auxiliary rod (5). The bottom of the inner wall of the auxiliary rod (5) is fixedly connected with a tension spring (7), and the top of the tension spring (7) is fixedly connected with a push rod (8). The side of the bottom frame (1) is fixedly fitted with a transport tube (11), and the end of the transport tube (11) away from the bottom frame (1) is connected to the inner wall of the quarantine tube (2). The top of the quarantine tube (2) is provided with an annular groove (23), and the inner wall of the annular groove (23) is slidably connected with a slide rod (24). The inner wall of the slide rod (24) is movably fitted with a ball, and the outer edge of the ball is slidably connected to the inner wall of the annular groove (23). The top of the slide rod (24) is fixedly fitted with a connecting rod (25), and the bottom of the connecting rod (25) is fixedly fitted with an auxiliary stirring plate (22). The side of the auxiliary stirring plate (22) is rotatably connected to the inner wall of the quarantine tube (2). The side of the auxiliary stirring plate (22) is fixedly fitted with an electromagnet plate two (21), and the shape and size of the side of the electromagnet plate two (21) are completely consistent with the shape and size of the side of the electromagnet plate one (20). The side of the electromagnet plate two (21) is attracted to the side of the electromagnet plate one (20). The top of the sorting cylinder (3) is provided with a connecting groove (9), and the bottom of the inner wall of the quarantine cylinder (2) is provided with a sorting groove (10). The inner wall of the connecting groove (9) is connected to the inner wall of the sorting groove (10), and the shape and size of the inner wall of the sorting groove (10) are completely consistent with the shape and size of the inner wall of the connecting groove (9). The outer edge of the push rod (8) is slidably connected to the inner wall of the connecting groove (9) and the inner wall of the sorting groove (10). An electric telescopic rod (26) is fixedly mounted on the side of the bottom frame (1), and the outer edge of the output end of the electric telescopic rod (26) is slidably connected to the inner wall of the bottom frame (1). A push plate (27) is fixedly mounted on the output end of the electric telescopic rod (26).

2. The intelligent grain quarantine sampling device according to claim 1, characterized in that: The top of the transport cylinder (11) is fixedly fitted with a guide frame (12), and the inner wall of the guide frame (12) is connected to the inner wall of the transport cylinder (11). The top of the guide frame (12) is fixedly fitted with a guide motor (13), and the output shaft of the guide motor (13) is fixedly sleeved with a fan blade assembly (14). The inner wall of the guide frame (12) is fixedly fitted with a guide ventilation plate (15).

3. The intelligent grain quarantine sampling device according to claim 1, characterized in that: The inner wall of the transport cylinder (11) is fixedly fitted with an air supply duct (16), and the side of the air supply duct (16) is fixedly fitted with an air supply motor, and the output shaft of the air supply motor is fixedly sleeved with an air supply fan blade (17).

4. The intelligent grain quarantine sampling device according to claim 2, characterized in that: A fixing plate is fixedly mounted on the side of the guide frame (12), and a stirring motor (18) is fixedly mounted on the bottom of the fixing plate. The output shaft of the stirring motor (18) is fixedly sleeved with a stirring blade (19), and an electromagnet plate (20) is fixedly mounted on the side of the stirring blade (19).

5. The intelligent grain quarantine sampling device according to claim 1, characterized in that: A fixed frame (28) is fixedly installed at the bottom of the inner wall of the quarantine tube (2). A sliding plate (29) is slidably connected to the inner wall of the fixed frame (28). A threaded rod (30) is rotatably sleeved on the inner wall of the fixed frame (28). A rotating shaft (31) is fixedly installed at the top of the threaded rod (30).

6. The intelligent grain quarantine sampling device according to claim 5, characterized in that: There are two threaded rods (30), and the bottom of the two threaded rods (30) is rotatably connected to the bottom of the inner wall of the fixed frame (28) and the top of the stirring motor (18), respectively. There are two rotating shafts (31), and the bottom of the two rotating shafts (31) is fixedly assembled to the top of the two threaded rods (30), respectively. A lifting motor (33) is fixedly assembled to the top of the fixed frame (28), and the output shaft of the lifting motor (33) is fixedly sleeved to the inner wall of the threaded rod (30) near the end of the stirring motor (18). A transmission belt (32) is movably sleeved on the outer edge of the rotating shaft (31).

7. The intelligent grain quarantine sampling device according to claim 5, characterized in that: A large target camera (34) is fixedly mounted on the bottom of the slide plate (29). A supplementary light (35) is provided on the side of the large target camera (34), and the top of the supplementary light (35) is fixedly mounted to the bottom of the slide plate (29). A weighing sensor is fixedly mounted on the inner wall of the bottom of the sorting cylinder (3).

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