Multi-stage cam vibration belt type buckwheat screening device capable of reducing dust

Abstract

The invention discloses a multi-stage cam vibration belt type buckwheat screening device capable of reducing dust, and relates to the technical field of dust reduction. A multi-stage cam vibration belt type buckwheat screening device capable of reducing dust comprises a buckwheat screening box, the top of the buckwheat screening box is fixedly connected with a feeding pipe, the feeding pipe communicates with the interior of the buckwheat screening box, a discharging opening is formed in one side of the buckwheat screening box, and a conveying screening structure and a dust cleaning structure are arranged in the buckwheat screening box. The dust cleaning structure is located on the buckwheat screening box, through cooperation of an exhaust fan, a dust discharging box, a dust collection main pipe, a dust collection auxiliary pipe, a dust collection head, a square annular pipe, a dust collection box, a belt type conveying screen and a multi-stage cam vibration roller, buckwheat is prevented from being accumulated on the surface of the belt type conveying screen and blocking the belt type conveying screen through vibration generated when the multi-stage cam vibration roller strikes the belt type conveying screen, and the buckwheat screening efficiency is improved. According to the buckwheat screening device, the screening efficiency is greatly improved, the service life of the device is greatly prolonged, buckwheat is driven to vibrate while the belt type conveying screen vibrates, dust among buckwheat particles floats, the dust in the device is sucked by the dust suction head, and the dust suction effect is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of dust reduction, and in particular to a belt-type buckwheat screening device with multi-stage cam vibration capable of reducing dust. Background Art

[0002] Buckwheat, also known as intestinal cleansing grass, black wheat, and triangle wheat, is an annual herb of the genus Fagopyrum in the Polygonaceae family. During the buckwheat processing, screening is a key link in removing impurities and improving buckwheat quality.

[0003] Traditional buckwheat screening devices often generate a lot of dust during the screening process, which not only threatens the health of operators, but also may affect the cleanliness and subsequent processing quality of buckwheat. Especially in the feeding stage, due to the impact and collision between buckwheat and the screening structure, it is easy to cause the fine dust in the buckwheat to float, making it easy for the dust to fly out from the feeding port of the screening box and spread into the air, thereby causing serious pollution to the production environment of buckwheat screening. In addition, during the buckwheat screening process, the screen is often blocked and difficult to clean. Over time, it will damage the buckwheat screening device and greatly affect the efficiency and service life of buckwheat screening. Therefore, we propose a multi-stage cam vibration belt buckwheat screening device that can reduce dust. Summary of the invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a multi-stage cam vibration belt-type buckwheat screening device capable of dust reduction, which can solve the problem that the traditional buckwheat screening device often generates a large amount of dust during the screening process, which not only threatens the health of the operator, but also may affect the cleanliness of the buckwheat and the subsequent processing quality. Especially in the feeding stage, due to the impact and collision between the buckwheat and the screening structure, it is easy to cause the fine dust in the buckwheat to float, so that the dust is easy to fly out from the feeding port of the screening box and diffuse into the air, thereby causing serious pollution to the production environment of buckwheat screening.

[0005] To achieve the above object, the present invention provides the following technical solution: a belt-type buckwheat screening device with multi-stage cam vibration capable of reducing dust, comprising:

[0006] A buckwheat screening box, a feed pipe is fixedly connected to the top of the buckwheat screening box, the feed pipe is communicated with the inside of the buckwheat screening box, a discharge port is opened on one side of the buckwheat screening box, and a conveying and screening structure is arranged inside the buckwheat screening box;

[0007] A dust cleaning structure, the dust cleaning structure is located on the buckwheat screening box;

[0008] The dust cleaning structure includes a dust exhaust box, an exhaust fan, a dust suction pipe, a dust suction auxiliary pipe and a square annular pipe. The dust exhaust box is fixedly connected to the top of the buckwheat screening box, the exhaust fan is fixedly installed on the top of the dust exhaust box, the exhaust end of the exhaust fan extends into the interior of the dust exhaust box, and a dust cover is installed on the exhaust end of the exhaust fan. The dust suction pipe is fixedly connected to one side of the dust exhaust box, and the end of the dust suction pipe away from the dust exhaust box is fixedly connected to the dust suction auxiliary pipe. The square annular pipe is fixedly sleeved on the outside of the feed pipe, and both ends of the dust suction auxiliary pipe away from the dust suction pipe are connected to the interior of the square annular pipe. The interior of the square annular pipe is fixedly connected with a plurality of dust suction heads, and the plurality of dust suction heads are connected to the interior of the square annular pipe, and the ends of the plurality of dust suction heads away from the square annular pipe extend into the interior of the feed pipe.

[0009] Preferably, the dust cleaning structure also includes a collecting box and a dust collection box. The collecting box is slidably connected to the inside of the dust exhaust box. A sealing gasket is provided at the sliding connection between the collecting box and the dust exhaust box. The dust collection box is fixedly mounted on the inner top wall of the buckwheat screening box. The dust collection box is connected to the inside of the dust collection main pipe through a connecting pipe. The bottom of the dust collection box is fixedly connected to a plurality of dust collection pipes connected to the inside thereof.

[0010] Preferably, the conveying and screening structure includes four conveying rollers, two belt conveying screens, a second conveying motor and a first conveying motor, and the four conveying rollers are rotatably connected to the inside of the buckwheat screening box.

[0011] Preferably, the two belt conveyor screens are both drivingly sleeved on the outer surfaces of the corresponding two conveyor rollers, the second conveyor motor and the first conveyor motor are both fixedly installed on one side of the buckwheat screening box, and the output ends of the second conveyor motor and the first conveyor motor are both rotatably extended into the interior of the buckwheat screening box and fixedly connected to the corresponding conveyor rollers.

[0012] Preferably, the buckwheat screening box is internally rotatably connected to two rotating shafts, and multi-stage cam vibration rollers are fixedly sleeved on the outer surfaces of the two rotating shafts, and the two rotating shafts are located inside the corresponding belt conveyor screen.

[0013] Preferably, a discharge plate is fixedly connected to the inside of the buckwheat screening box, the top of the discharge plate is a sloped structure, and two inclined discharge ports are opened on the side of the buckwheat screening box close to the second conveying motor. The inclined discharge port close to the second conveying motor is located above the discharge plate, and the top of the discharge plate and the inner bottom wall of the corresponding inclined discharge port are in the same horizontal plane.

[0014] Preferably, a driving motor is fixedly mounted on one side of the buckwheat screening box close to the second conveying motor, and an output end of the driving motor rotates and extends into the interior of the buckwheat screening box and is fixedly connected to the corresponding rotating shaft.

[0015] Preferably, one end of the two rotating shafts away from the driving motor rotates and extends to the outside of the buckwheat screening box, and a belt is connected to the transmission sleeve on the outer surface of the two rotating shafts, and the belt is located on the side of the buckwheat screening box away from the driving motor.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The multi-stage cam vibration belt-type buckwheat cleaning device capable of dust reduction, through the cooperation of the exhaust fan, the dust exhaust box, the dust suction main pipe, the dust suction auxiliary pipe, the dust suction head, the square ring pipe and the dust suction box, enables the multiple dust suction heads to absorb the dust floating in the feed pipe, and the dust suction box can absorb the dust in the buckwheat screening box, so that the absorbed dust can be discharged into the dust exhaust box for centralized collection, thereby preventing the dust from flying out and diffusing into the air, and further improving the production environment of buckwheat screening;

[0018] 2. The dust-reducing multi-stage cam vibrating belt-type buckwheat cleaning device drives a motor, a rotating shaft, a belt and a multi-stage cam vibrating roller, so that the multi-stage cam vibrating roller can hit the belt conveyor screen. At the moment when the multi-stage cam vibrating roller hits the belt conveyor screen, the lower half of the belt conveyor screen will produce downward concentrated deformation and vibration, so that the buckwheat enters the inner part of the belt conveyor screen and moves toward the middle part after passing through the upper belt conveyor screen, thereby avoiding the buckwheat from deviating to the conveyor rollers on both sides and affecting the normal operation of the conveyor rollers, thus protecting the conveyor rollers. Furthermore, the vibration generated by the multi-stage cam vibrating roller hitting the belt conveyor screen avoids the accumulation and clogging of buckwheat on the surface of the belt conveyor screen, thereby greatly improving the screening efficiency and the service life of the device. While the belt conveyor screen vibrates, the buckwheat is driven to vibrate, so that the dust between the buckwheat particles floats, so that the dust suction head absorbs the dust in the device, further improving the dust suction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the dust exhaust box of the present invention;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of a buckwheat screening box of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the dust collection box of the present invention;

[0024] Figure 5 It is a schematic diagram of the eccentric wheel structure of the present invention.

[0025] Figure numerals: 1. buckwheat screening box; 2. dust exhaust box; 3. exhaust fan; 4. dust suction main pipe; 5. dust suction auxiliary pipe; 6. dust suction head; 7. square ring pipe; 8. belt conveyor screen; 9. first conveying motor; 10. belt; 11. inclined discharge port; 12. driving motor; 13. second conveying motor; 14. collecting box; 15. discharge plate; 16. rotating shaft; 17. conveying roller; 18. dust suction box; 19. multi-stage cam vibration roller; 20. feeding pipe. DETAILED DESCRIPTION

[0026] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the description of the present invention, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] See also Figure 1-5 The present invention provides a technical solution: a belt-type buckwheat screening device with multi-stage cam vibration capable of reducing dust, comprising:

[0031] A buckwheat screening box 1, a feed pipe 20 is fixedly connected to the top of the buckwheat screening box 1, the feed pipe 20 is communicated with the inside of the buckwheat screening box 1, a discharge port is opened on one side of the buckwheat screening box 1, and a conveying and screening structure is arranged inside the buckwheat screening box 1;

[0032] A dust cleaning structure, which is located on the buckwheat screening box 1;

[0033] The dust cleaning structure includes a dust exhaust box 2, an exhaust fan 3, a dust suction pipe 4, a dust suction auxiliary pipe 5 and a square annular pipe 7. The dust exhaust box 2 is fixedly connected to the top of the buckwheat screening box 1, the exhaust fan 3 is fixedly installed on the top of the dust exhaust box 2, the exhaust end of the exhaust fan 3 extends into the interior of the dust exhaust box 2, and a dust cover is installed on the exhaust end of the exhaust fan 3. The dust suction pipe 4 is fixedly connected to one side of the dust exhaust box 2, and one end of the dust suction pipe 4 away from the dust exhaust box 2 is fixedly connected to the dust suction auxiliary pipe 5, the square annular pipe 7 is fixedly sleeved on the outside of the feed pipe 20, and both ends of the dust suction auxiliary pipe 5 away from the dust suction pipe 4 are connected to the interior of the square annular pipe 7, and a plurality of dust suction heads 6 are fixedly connected to the interior of the square annular pipe 7, and the plurality of dust suction heads 6 are connected to the interior of the square annular pipe 7, and one end of the plurality of dust suction heads 6 away from the square annular pipe 7 extends into the interior of the feed pipe 20.

[0034] The dust cleaning structure also includes a collecting box 14 and a dust collection box 18. The collecting box 14 is slidably connected to the inside of the dust exhaust box 2. A sealing gasket is provided at the sliding connection between the collecting box 14 and the dust exhaust box 2. The dust collection box 18 is fixedly mounted on the inner top wall of the buckwheat screening box 1. The dust collection box 18 is connected to the inside of the dust collection main pipe 4 through a connecting pipe. The bottom of the dust collection box 18 is fixedly connected to a plurality of dust collection pipes connected to the inside thereof.

[0035] The conveying and screening structure includes four conveying rollers 17, two belt conveying screens 8, a second conveying motor 13 and a first conveying motor 9. The four conveying rollers 17 are rotatably connected to the inside of the buckwheat screening box 1. The two belt conveying screens 8 are drivingly sleeved on the outer surfaces of the corresponding two conveying rollers 17. The second conveying motor 13 and the first conveying motor 9 are fixedly installed on one side of the buckwheat screening box 1. The output ends of the second conveying motor 13 and the first conveying motor 9 are rotatably extended into the interior of the buckwheat screening box 1 and are fixedly connected to the corresponding conveying rollers 17.

[0036] A discharge plate 15 is fixedly connected to the inside of the buckwheat screening box 1, and the top of the discharge plate 15 is a sloped structure. Two inclined discharge ports 11 are opened on the side of the buckwheat screening box 1 close to the second conveying motor 13. The inclined discharge port 11 close to the second conveying motor 13 is located above the discharge plate 15, and the top of the discharge plate 15 and the inner bottom wall of the corresponding inclined discharge port 11 are in the same horizontal plane.

[0037] The buckwheat screening box 1 is internally rotatably connected to two rotating shafts 16, and multi-stage cam vibration rollers 19 are fixedly sleeved on the outer surfaces of the two rotating shafts 16. The two rotating shafts 16 are both located inside the corresponding belt conveyor screen 8. A drive motor 12 is fixedly installed on the side of the buckwheat screening box 1 close to the second conveying motor 13. The output end of the drive motor 12 rotates and extends into the interior of the buckwheat screening box 1 and is fixedly connected to the corresponding rotating shaft 16. The ends of the two rotating shafts 16 away from the drive motor 12 rotate and extend to the outside of the buckwheat screening box 1. Belts 10 are transmission sleeved on the outer surfaces of the two rotating shafts 16, and the belt 10 is located on the side of the buckwheat screening box 1 away from the drive motor 12.

[0038] Furthermore, when the device is used, buckwheat will be discharged from the feed pipe 20 into the buckwheat screening box 1. When the buckwheat is discharged into the buckwheat screening box 1 and dust is generated, the exhaust fan 3 is started by connecting an external power supply, and the exhaust fan 3 will extract the air in the dust exhaust box 2. The dust exhaust box 2 will exhaust air to the inside of the dust suction box 18 and the dust suction auxiliary pipe 5 through the dust suction main pipe 4. The dust suction auxiliary pipe 5 can exhaust air to the inside of the square ring pipe 7, so that the square ring pipe 7 can absorb the dust scattered in the feed pipe 20 through the multiple dust suction heads 6 thereon, and the dust suction box 18 can absorb the dust inside the buckwheat screening box 1 through the multiple dust suction pipes at the bottom thereof, so that the absorbed dust is discharged into the dust exhaust box 2 through the dust suction main pipe 4, so that the dust can fall into the collection box 14 for centralized collection;

[0039] Furthermore, when the device is used, when buckwheat is screened, the second conveying motor 13, the first conveying motor 9 and the driving motor 12 are started by connecting an external power supply, the second conveying motor 13 drives the corresponding conveying roller 17 to rotate, and the conveying roller 17 close to the second conveying motor 13 rotates, which drives the corresponding belt conveying screen 8 to be driven with the cooperation of the corresponding conveying roller 17, and the first conveying motor 9 drives the corresponding conveying roller 17 to rotate, and the conveying roller 17 close to the first conveying motor 9 rotates, which drives the corresponding belt conveying screen 8 to be driven with the cooperation of the corresponding conveying roller 17, thereby facilitating the conveying of the buckwheat on the belt conveying screen 8;

[0040] Furthermore, when the device is used, the rotation of the drive motor 12 will drive the corresponding rotating shaft 16 to rotate. Pulleys are fixedly sleeved on the outer surfaces of the two rotating shafts 16, and the belt 10 is driven and sleeved on the two pulleys. Therefore, the rotation of the drive motor 12 close to the rotating shaft 16 will drive the rotating shaft 16 away from the drive motor 12 to rotate through the belt 10. The rotation of the two rotating shafts 16 will drive the multi-stage cam vibration roller 19 thereon to rotate, so that the multi-stage cam vibration roller 19 can hit the two belt conveyor screens 8, and then it is convenient for the two belt conveyor screens 8 to vibrate when conveying buckwheat, so that the screened buckwheat can be discharged from the two inclined discharge ports 11, and the unscreened buckwheat impurities are discharged from the buckwheat screening box 1 along with the transmission of the belt conveyor screen 8.

[0041] Through the cooperation of the exhaust fan 3, the dust exhaust box 2, the dust suction main pipe 4, the dust suction auxiliary pipe 5, the dust suction head 6, the square ring pipe 7 and the dust suction box 18, the multiple dust suction heads 6 can absorb the dust floating in the feed pipe 20, and the dust suction box 18 can absorb the dust in the buckwheat screening box 1, so that the absorbed dust can be discharged into the dust exhaust box 2 for centralized collection, thereby preventing the dust from flying out and diffusing into the air, and further improving the production environment of buckwheat screening.

[0042] By driving the motor 12, the rotating shaft 16, the belt 10 and the multi-stage cam vibration roller 19, the multi-stage cam vibration roller 19 can hit the belt conveyor screen 8, so that the belt conveyor screen 8 can vibrate and deform when conveying and screening buckwheat. At the moment when the multi-stage cam vibration roller 8 hits the belt conveyor screen 8, the lower half of the belt conveyor screen 8 will be deformed downward, so that the buckwheat enters the inner part of the belt conveyor screen 8 and moves toward the middle part after passing through the upper belt conveyor screen 8, thereby avoiding the buckwheat from deviating to the conveyor rollers 17 on both sides and affecting the normal operation of the conveyor rollers 17, thereby protecting the conveyor rollers 17. In addition, the vibration generated by the multi-stage cam vibration roller 19 hitting the belt conveyor screen 8 avoids the accumulation and clogging of buckwheat on the surface of the belt conveyor screen 8, thereby greatly improving the screening efficiency and the service life of the device. When the belt conveyor screen 8 vibrates, the buckwheat is driven to vibrate, so that the dust between the buckwheat particles floats, so that the dust suction head 6 absorbs the dust in the device, further improving the dust suction effect.

[0043] Structure description: Dust exhaust box 2: It is convenient to provide a negative pressure space for dust collection under the suction of the exhaust fan 3;

[0044] Dust suction pipe 4: used to discharge the sucked dust into the dust discharge box 2;

[0045] Dust suction auxiliary pipe 5: It is a "C"-shaped structure, which is convenient for extracting dust from the square ring pipe 7;

[0046] The square ring tube 7 can be wrapped around the outside of the feeding tube 20, so as to facilitate multi-directional vacuuming of the inside of the feeding tube 20 through multiple vacuum heads 6;

[0047] Belt conveyor screen 8: a conveyor belt structure with screening holes, which has conveying and screening functions;

[0048] Belt 10: Used with two pulleys to drive two rotating shafts 16 to rotate synchronously;

[0049] Inclined discharge port 11: capable of discharging buckwheat after screening;

[0050] Collection box 14: convenient for collecting the dust discharged into the dust exhaust box 2;

[0051] The discharge plate 15 is capable of guiding and discharging the buckwheat screened on the belt conveyor screen 8 near the second conveyor motor 13;

[0052] Rotating shaft 16: used to drive the multi-stage cam vibration roller 19 to rotate synchronously;

[0053] Dust collection box 18: A plurality of dust collection pipes are provided at the bottom thereof to facilitate the absorption of dust in the buckwheat screening box 1;

[0054] Multi-stage cam vibration roller 19: The cam is in a staggered distributed structure on the rotating shaft 16, which can hit the belt conveyor screen 8, so that the belt conveyor screen 8 can vibrate during transportation.

[0055] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A belt-type buckwheat screening device with multi-stage cam vibration capable of reducing dust, characterized in that: include: A buckwheat screening box (1), wherein a feed pipe (20) is fixedly connected to the top of the buckwheat screening box (1), the feed pipe (20) is communicated with the interior of the buckwheat screening box (1), a discharge port is provided on one side of the buckwheat screening box (1), and a conveying and screening structure is provided inside the buckwheat screening box (1); A dust cleaning structure, the dust cleaning structure is located on the buckwheat screening box (1); The dust cleaning structure comprises a dust exhaust box (2), an exhaust fan (3), a dust suction main pipe (4), a dust suction auxiliary pipe (5) and a square ring pipe (7); the dust exhaust box (2) is fixedly connected to the top of the buckwheat screening box (1); the exhaust fan (3) is fixedly installed on the top of the dust exhaust box (2); the exhaust end of the exhaust fan (3) extends into the interior of the dust exhaust box (2); a dust cover is installed on the exhaust end of the exhaust fan (3); and the dust suction main pipe (4) is fixedly connected to one side of the dust exhaust box (2); The end of the dust suction main pipe (4) away from the dust discharge box (2) is fixedly connected to the dust suction auxiliary pipe (5), the square ring pipe (7) is fixedly sleeved on the outside of the feed pipe (20), and both ends of the dust suction auxiliary pipe (5) away from the dust suction main pipe (4) are connected to the inside of the square ring pipe (7); A plurality of dust collector heads (6) are fixedly connected to the interior of the square annular tube (7); the plurality of dust collector heads (6) are all connected to the interior of the square annular tube (7); and one end of the plurality of dust collector heads (6) away from the square annular tube (7) extends into the interior of the feed tube (20).

2. The dust-reducing multi-stage cam vibration belt-type buckwheat screening device according to claim 1, characterized in that: The dust cleaning structure further comprises a collection box (14) and a dust collecting box (18); the collection box (14) is slidably connected to the inside of the dust exhaust box (2); a sealing gasket is provided at the sliding connection between the collection box (14) and the dust exhaust box (2); The dust box (18) is fixedly mounted on the inner top wall of the buckwheat screening box (1), the dust box (18) is connected to the interior of the dust main pipe (4) via a connecting pipe, and the bottom of the dust box (18) is fixedly connected to a plurality of dust pipes connected to the interior thereof.

3. The dust-reducing multi-stage cam vibration belt-type buckwheat screening device according to claim 1, characterized in that: The conveying and screening structure comprises four conveying rollers (17), two belt conveying screens (8), a second conveying motor (13) and a first conveying motor (9); the four conveying rollers (17) are all rotatably connected to the interior of the buckwheat screening box (1).

4. The dust-reducing multi-stage cam vibration belt-type buckwheat screening device according to claim 3, characterized in that: The two belt conveyor screens (8) are both drivingly sleeved on the outer surfaces of the corresponding two conveyor rollers (17); the second conveyor motor (13) and the first conveyor motor (9) are both fixedly mounted on one side of the buckwheat screening box (1); the output ends of the second conveyor motor (13) and the first conveyor motor (9) are both rotatably extended into the interior of the buckwheat screening box (1) and are fixedly connected to the corresponding conveyor rollers (17).

5. The dust-reducing multi-stage cam vibration belt-type buckwheat screening device according to claim 3, characterized in that: The buckwheat screening box (1) is internally rotatably connected to two rotating shafts (16), and multi-stage cam vibration rollers (19) are fixedly sleeved on the outer surfaces of the two rotating shafts (16). The two rotating shafts (16) are located inside the corresponding belt conveyor screen (8).

6. The dust-reducing multi-stage cam vibration belt-type buckwheat screening device according to claim 3, characterized in that: A discharge plate (15) is fixedly connected to the inside of the buckwheat screening box (1), the top of the discharge plate (15) is an inclined structure, and two inclined discharge ports (11) are provided on one side of the buckwheat screening box (1) close to the second conveying motor (13); The inclined discharge port (11) close to the second conveying motor (13) is located above the discharge plate (15), and the top of the discharge plate (15) and the inner bottom wall of the corresponding inclined discharge port (11) are in the same horizontal plane.

7. The dust-reducing multi-stage cam vibration belt-type buckwheat screening device according to claim 6, characterized in that: A drive motor (12) is fixedly mounted on one side of the buckwheat screening box (1) close to the second conveying motor (13); an output end of the drive motor (12) rotates and extends into the interior of the buckwheat screening box (1) and is fixedly connected to a corresponding rotating shaft (16); 8. The dust-reducing multi-stage cam vibration belt-type buckwheat screening device according to claim 7, characterized in that: One end of the two rotating shafts (16) away from the driving motor (12) is rotated and extended to the outside of the buckwheat screening box (1), and a belt (10) is connected to the transmission sleeve on the outer surface of the two rotating shafts (16), and the belt (10) is located on the side of the buckwheat screening box (1) away from the driving motor (12).

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