Tartary buckwheat cleaning and impurity removing device

Abstract

The application provides a tartary buckwheat cleaning and impurity removing device, and relates to the technical field of tartary buckwheat product processing equipment. The device comprises a box, a partition plate is arranged in the box, the partition plate divides the box into a first chamber and a second chamber, the bottom of the first chamber is communicated with the bottom of the second chamber, a stirring mechanism is arranged in the first chamber, and a spiral conveying mechanism is arranged in the second chamber. A screening plate is arranged in the first chamber, the screening plate comprises a first branch plate and a second branch plate, one end of the first branch plate away from the second branch plate is fixed on the side wall of the box, the second branch plate is arranged on the first branch plate in an inclined manner and is attached to the end face of the feeding hopper of the spiral conveying mechanism, a through hole is formed in the second branch plate and is communicated with the opening of the feeding hopper, an opening and closing plate is arranged in the through hole, and a guide member is arranged on the first branch plate. The tartary buckwheat cleaned can be conveniently and quickly conveyed out of the box, and the content of the impurities attached to the tartary buckwheat can be reduced.

Description

Technical Field

[0001] This invention relates to the field of buckwheat product processing equipment technology, and more specifically, to a buckwheat cleaning and impurity removal device. Background Technology

[0002] Buckwheat flavonoid high-fiber powder is a functional food with multiple health benefits. It is mainly extracted from buckwheat and is rich in flavonoids, dietary fiber, amino acids, trace elements, and vitamins. Flavonoids are unique components of buckwheat and have significant antioxidant, anti-inflammatory, and antibacterial effects. The preparation of buckwheat flavonoid high-fiber powder includes the following processes: washing, milling, refining, ingredient mixing, maturation, ultra-fine grinding, and packaging.

[0003] Conventional cleaning is done manually. Because buckwheat grains are small, the process of cleaning and removing them is quite tedious. Therefore, cleaning equipment is now commonly used. The buckwheat is poured into the equipment, and a stirring mechanism separates impurities from it before the cleaned buckwheat is removed. However, the stirring mechanism makes removing the buckwheat difficult, and many impurities still remain after removal, affecting the quality of the processed product. Summary of the Invention

[0004] The purpose of this invention is to provide a buckwheat washing and impurity removal device, which can conveniently and quickly transport the washed buckwheat out of the box and reduce the content of impurities attached to the buckwheat, thereby improving the quality of the product.

[0005] The present invention is achieved through the following technical solution: a buckwheat washing and impurity removal device, comprising: a box body, wherein a partition is disposed inside the box body, the partition dividing the box body into a first chamber and a second chamber, the bottom of the first chamber and the second chamber being connected;

[0006] A stirring mechanism, comprising a stirring motor and a stirring shaft, wherein the stirring shaft is vertically disposed within a first chamber, and the stirring motor is disposed at the bottom of the housing with its output shaft fixedly connected to the stirring shaft;

[0007] A screw conveyor mechanism is inclinedly disposed in the second chamber, the lowest end of the screw conveyor mechanism extends into the first chamber and is provided with a feed hopper, and the highest end of the screw conveyor mechanism extends to the outside of the box and is provided with a discharge hopper;

[0008] A screening plate is disposed in a first chamber. The screening plate includes a first support plate and a second support plate. The end of the first support plate away from the second support plate is fixedly connected to the side wall of the box body. The second support plate is inclinedly disposed on the first support plate and fits against the end face of the feed hopper. The end of the second support plate away from the first support plate is fixedly connected to a partition plate. The second support plate has an opening that communicates with the opening of the feed hopper. An opening and closing plate is disposed in the opening. The first support plate is provided with a guide for guiding materials into the opening.

[0009] Furthermore, the first support plate includes an inclined section, an arc-shaped section, and a straight section sequentially from the end away from the second support plate to the end near the second support plate. The material guide includes a material guide plate. A notch is provided on the straight section. The material guide plate is rotatably disposed in the notch. A bending rod is provided on the material guide plate. The bending rod extends obliquely upward and fits against the opening and closing plate. A rotating assembly for driving the material guide plate to rotate is provided in the first cavity.

[0010] Furthermore, the rotating assembly includes a rotating motor, a drive shaft, and a cam. The drive shaft is rotatably connected to the first chamber, the cam is fixedly connected to the drive shaft and its outer contour surface abuts against the bottom surface of the guide plate, and the rotating motor is located outside the housing and its output shaft is coaxially connected to the drive shaft.

[0011] Furthermore, a blocking element is provided at the bottom of the guide plate. The blocking element includes an arc-shaped stop and two side stops. The arc-shaped stop is provided at the end of the guide plate away from the bonding plate, and the two side stops are respectively provided on both sides of the guide plate.

[0012] Furthermore, a pressing member is provided on the side of the opening and closing plate facing the inside of the feed hopper. The pressing member includes multiple arc-shaped elastic sheets, which are used to drive the opening and closing plate to rotate outward of the feed hopper to close the opening.

[0013] Furthermore, a receiving cavity for accommodating suspended impurities is provided on one side of the box body and located in the first chamber, and a cleaning mechanism for retrieval of suspended impurities and conveying the suspended impurities into the receiving cavity is provided inside the box body.

[0014] The cleaning mechanism includes a cleaning screen, a horizontal drive assembly for driving the cleaning screen to move horizontally, and a vertical drive assembly for driving the cleaning screen to move vertically.

[0015] Both sides of the cleaning mesh plate are provided with limiting posts, and both sides of the box body are provided with limiting grooves for the limiting posts to slide. The limiting grooves include a first horizontal groove, a vertical groove, a second horizontal groove and an arc groove. The first horizontal groove is located below the second horizontal groove. The vertical groove and the arc groove are both connected between the first horizontal groove and the second horizontal groove. The vertical groove is located at the end of the first horizontal groove closer to the receiving cavity, and the arc groove is located at the end of the first horizontal groove away from the receiving cavity.

[0016] Furthermore, the lateral drive assembly includes a support base, a drive motor, a lead screw, and a drive seat. The support base is arranged horizontally on the housing, and a sliding groove is formed on the support base along its own length. The lead screw is rotatably disposed in the sliding groove. The drive motor is fixedly disposed at one end of the support base, and the output shaft of the drive motor is fixedly connected to the lead screw. The drive seat is slidably connected in the sliding groove and threadedly connected to the lead screw.

[0017] The vertical drive assembly includes a first support rod, a second support rod, and a tension spring. The first support rod is fixedly mounted on the drive seat, and an installation groove is provided at the end of the first support rod away from the drive seat. One end of the second support rod is slidably mounted in the installation groove, and the other end is fixedly connected to the cleaning mesh plate. One end of the tension spring is fixedly connected to the bottom wall of the installation groove, and the other end is fixedly connected to the second support rod.

[0018] Furthermore, a telescopic stop is provided at the connection between the arc-shaped groove and the first transverse groove. A telescopic groove is provided inside the box. The telescopic stop is slidably disposed in the telescopic groove. A spring plate for driving the telescopic stop to move outward from the telescopic groove is connected between the telescopic stop and the bottom wall of the telescopic groove. The end of the telescopic stop facing the arc-shaped groove is an arc-shaped surface, and the side of the telescopic stop facing the first transverse groove is a flat surface.

[0019] Furthermore, the spiral conveying mechanism includes a cylinder, and a plurality of support frames for fixing the position of the cylinder are provided on the inner side wall of the cylinder. Spiral blades are provided inside the cylinder, and a conveying motor is provided at one end of the cylinder outside the box. The output shaft of the conveying motor is fixedly connected to the spiral blades. Water permeable holes are provided on both the cylinder and the spiral blades.

[0020] Furthermore, a guide hopper for introducing materials into the first chamber is provided on one side of the box body. The guide hopper is fixedly installed on the box body by a bracket and the height of the guide hopper is higher than the height of the box body. A fan is provided on the top of the partition, and a flared air pipe is provided at the air outlet of the fan. The flared air pipe is located between the guide hopper and the box body and can blow impurities in the material out of the box body.

[0021] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0022] 1. This invention provides a spiral conveying mechanism and a screening plate inside the box, and separates the two with a partition. The screening plate allows buckwheat to be placed and allows impurities in the buckwheat to fall downwards to the bottom of the box. The spiral conveying mechanism can continuously transport the buckwheat on the screening plate upwards to the outside of the box, while the impurities remain at the bottom of the box and are not transported with the buckwheat. Therefore, the impurity content in the washed buckwheat can be significantly reduced.

[0023] 2. The present invention provides a receiving cavity in the box and a cleaning mechanism consisting of a cleaning screen, a horizontal drive assembly and a vertical drive assembly. The horizontal drive assembly drives the cleaning screen to move laterally towards the receiving cavity until it abuts against the inner wall of the box to retrieve impurities suspended on the liquid surface. Then, the vertical drive assembly drives the cleaning screen to move upward, thus sending the retrieved impurities into the receiving cavity. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the spiral conveying mechanism, screening plate, stirring mechanism and rotating assembly of the present invention;

[0026] Figure 3 This is a cross-sectional view of the spiral conveying mechanism and the screening plate of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the screening plate of the present invention;

[0028] Figure 5 This is a schematic diagram of the opening and closing plate, the material guide, and the rotating assembly of the present invention;

[0029] Figure 6 This is a schematic diagram of the opening and closing plate and the material guide of the present invention;

[0030] Figure 7 This is a schematic diagram of the cleaning mechanism of the present invention inside the housing;

[0031] Figure 8 This is a schematic diagram of the cleaning mesh plate and vertical drive assembly of the present invention;

[0032] Figure 9 This is a schematic diagram of the limiting groove of the present invention on the inner wall of the box;

[0033] Figure 10 for Figure 9 Enlarged view of part A;

[0034] Reference numerals: 1-Box body, 11-Baffle plate, 12-First chamber, 13-Second chamber, 14-Receiving cavity, 15-Limiting groove, 151-First horizontal groove, 152-Vertical groove, 153-Second horizontal groove, 154-Arc-shaped groove, 155-Telescopic groove, 16-Telescopic stop block, 161-Spring plate, 17-Guide hopper, 171-Support, 2-Stirring mechanism, 21-Stirring motor, 22-Stirring shaft, 3-Screw conveying mechanism, 31-Feed hopper, 32-Discharge hopper, 33-Cylinder body, 331-Support frame, 34-Screw blade, 35-Conveying motor, 4-Screwing plate, 41-First support plate, 411-Inclined section, 412-Arc-shaped section, 413-Straight section, 42-Second support plate Plate, 421-Opening and closing plate, 422-Pressure component, 4221-Arc-shaped elastic sheet, 43-Guide component, 431-Guide plate, 432-Bending rod, 433-Blocking component, 4331-Arc-shaped flange, 4332-Side flange, 5-Rotating assembly, 51-Rotating motor, 52-Drive shaft, 53-Cam, 6-Cleaning mechanism, 61-Cleaning mesh plate, 611-Limiting post, 62-Horizontal drive assembly, 621-Support seat, 622-Drive motor, 623-Screw, 624-Drive seat, 625-Guide block, 626-Guide rod, 63-Vertical drive assembly, 631-First support rod, 632-Second support rod, 633-Tension spring, 7-Blower, 71-Expanded air blowing pipe. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0037] Example 1

[0038] The following is for reference Figures 1-10 As shown in the illustration, and further explained with reference to specific embodiments, this embodiment provides a buckwheat washing and impurity removal device, referring to... Figure 1 , Figure 2As shown, the device includes a housing 1, a stirring mechanism 2, a screw conveyor mechanism 3, and a screening plate 4. A partition 11 is installed inside the housing 1, dividing it into a first chamber 12 and a second chamber 13. The bottoms of the first chamber 12 and the second chamber 13 are connected. The stirring mechanism 2 is located in the first chamber 12 to stir the buckwheat entering the first chamber 12. The screw conveyor mechanism 3 is inclined and located in the second chamber 13. A feed hopper 31 is located at the lowest end of the screw conveyor mechanism 3. The opening of the screw conveyor 3 extends into the first chamber 12 to facilitate the conveying of the cleaned material within the first chamber 12. A discharge hopper 32 is located at the highest end of the screw conveyor 3, extending to the outside of the housing 1 to facilitate the conveying of material to the outside of the housing 1. A screening plate 4 is installed inside the first chamber 12. The mesh size of the screening plate 4 is smaller than the particle size of the buckwheat, allowing impurities adhering to the buckwheat to fall to the bottom of the housing 1, while the buckwheat accumulates on the screening plate 4. The screw conveyor 3 continuously conveys the buckwheat on the screening plate 4 upwards to the outside of the housing 1, while impurities remain at the bottom of the housing 1 and are not conveyed along with the buckwheat, thus significantly reducing the impurity content in the cleaned buckwheat.

[0039] Reference Figure 1 As shown, a guide hopper 17 for guiding materials into the first chamber 12 is arranged on one side of the box body 1. The guide hopper 17 is fixedly installed on the box body 1 by a bracket 171, and the height of the guide hopper 17 is higher than the height of the box body 1. A fan 7 is arranged on the top of the partition 11. The air outlet of the fan 7 is provided with a flared air pipe 71. The flared air pipe 71 is located between the guide hopper 17 and the box body 1 and can blow impurities in the material out of the box body 1. The buckwheat is conveyed into the guide hopper 17 by a belt conveyor, chain conveyor or other continuous conveying mechanism, and then enters the box body 1 through the guide hopper 17. By making the height of the guide hopper 17 higher than the height of the box body 1, air is blown into the gap between the guide hopper 17 and the box body 1 through the flared air pipe 71 of the fan 7 during the feeding process. This can blow out lighter impurities such as empty shells, light wheat grains and miscellaneous grains in the buckwheat raw material, thereby reducing the impurity content in the buckwheat entering the box body 1.

[0040] The stirring mechanism 2 includes a stirring motor 21 and a stirring shaft 22. The stirring shaft 22 is vertically arranged in the first chamber 12, and multiple sets of stirring blades are distributed along its length. The stirring motor 21 is installed at the bottom of the housing 1, and the output shaft of the stirring motor 21 is fixedly connected to the stirring shaft 22. The stirring motor 21 drives the stirring shaft 22 to stir the buckwheat, so that the impurities in the buckwheat are separated from the buckwheat. The separated small particles of impurities can pass through the sieve plate 4 and enter the bottom of the housing 1, while the buckwheat particles are trapped on the sieve plate.

[0041] Reference Figure 3As shown, the screw conveyor mechanism 3 includes a cylindrical body 33 inclinedly disposed within the second chamber 13. Multiple support frames 331 for fixing the position of the cylindrical body 33 are installed on the inner wall of the housing 1. A spiral blade 34 is installed inside the cylindrical body 33. A conveying motor 35 is located at one end of the cylindrical body 33 outside the housing 1. The output shaft of the conveying motor 35 is fixedly connected to the spiral blade 34. Water-permeable holes are provided on both the cylindrical body 33 and the spiral blade 34. By driving the spiral blade 34 to rotate through the conveying motor 35, buckwheat entering the cylindrical body 33 from the feed hopper 31 can be continuously conveyed, and finally output from the discharge hopper 32 installed at the highest point of the cylindrical body 33 to the outside of the housing 1.

[0042] Reference Figure 3 , Figure 4 As shown, the screening plate 4 includes a first support plate 41 and a second support plate 42. The end of the first support plate 41 away from the second support plate 42 is fixedly connected to the side wall of the box 1. The second support plate 42 is inclinedly arranged on the first support plate 41 and fits against the end face of the feed hopper 31. The end of the second support plate 42 away from the first support plate 41 is fixedly connected to the partition plate 11. The second support plate 42 has an opening that communicates with the opening of the feed hopper 31. An opening and closing plate 421 is provided in the opening and the first support plate 41 is provided with a guide member 43 for guiding the material into the opening. After the buckwheat is washed, the stirring motor 21 is turned off to stop the stirring shaft 22 from stirring the buckwheat. After standing for a period of time, the buckwheat accumulates on the screening plate 4. Impurities pass through the screening plate 4 and settle at the bottom of the box 1. Then, the opening and closing plate 421 is opened by the guide member 43 to guide the buckwheat from the opening into the feed hopper 31, thereby realizing the conveying process of the washed buckwheat.

[0043] Reference Figure 4 , Figure 5 As shown, the first support plate 41, from the end furthest from the second support plate 42 to the end closest to the second support plate 42, sequentially includes an inclined section 411, an arc-shaped section 412, and a straight section 413. Under the influence of gravity, buckwheat tends to move from the inclined section 411 to the straight section 413. Therefore, when the buckwheat on the straight section 413 enters the feed hopper 31, the buckwheat on the inclined section 411 will fall into the straight section 413 via the arc-shaped section 412. The guide component 43 includes a guide plate 431, and a notch is provided on the straight section 413. The guide plate 431 is rotatably installed within the notch. (Refer to...) Figure 6As shown, a bending rod 432 is provided on the guide plate 431. The bending rod 432 extends obliquely upward and fits against the opening and closing plate 421. A rotating assembly 5 for driving the guide plate 431 to rotate is provided in the first chamber 12. A pressing member 422 is provided on the side of the opening and closing plate 421 facing the feed hopper 31. In the initial state, the opening and closing plate 421 is in a closed state under the action of the pressing member 422. The rotating assembly 5 drives the guide plate 431 to rotate, that is, the bending rod 432 can apply pressure to the opening and closing plate 421 to open the opening and closing plate 421. During the rotation of the guide plate 431, buckwheat can be introduced from the opening into the feed hopper 31.

[0044] Reference Figure 4 As shown, the pressing member 422 includes multiple arc-shaped elastic sheets 4221, which are used to drive the opening and closing plate 421 to rotate outward of the feed hopper 31 to close the opening; see reference Figure 5 As shown, the rotating assembly 5 includes a rotating motor 51, a drive shaft 52, and a cam 53. The drive shaft 52 is rotatably connected in the first chamber 12. The cam 53 is fixedly connected to the drive shaft 52 and its outer contour surface abuts against the bottom surface of the guide plate 431. The rotating motor 51 is installed outside the housing 1 and its output shaft is coaxially connected to the drive shaft 52. The starting motor 51 drives the drive shaft 52 to rotate, which in turn drives the cam 53 to rotate. As the contact area between the bottom surface of the guide plate 431 and the outer contour surface of the cam 53 changes, the cam 53 can drive the guide plate 431 to rotate periodically upward to guide the buckwheat into the passage. When the guide plate 431 rotates, it applies a resisting force to the opening and closing plate 421 through the bending rod 432, causing the opening and closing plate 421 to rotate and open the passage. When the guide plate 431 rotates downward back to the initial position, the bending rod 432 no longer applies a force to the opening and closing plate 421. Under the action of multiple arc-shaped elastic plates 4221, the opening and closing plate 421 rotates in the opposite direction and closes the opening. During the periodic rotation of the opening and closing plate 421 and the opening opening and closing, a suction force can be applied to the buckwheat on the screening plate 4, thereby promoting the buckwheat to enter the passage.

[0045] Reference Figure 5 , Figure 6 As shown, to prevent buckwheat from falling through the gap between the guide plate 431 and the first support plate 41 during the rotation of the guide plate 431, a blocking component 433 is installed at the bottom of the guide plate 431. The blocking component 433 includes an arc-shaped baffle 4331 and two side baffles 4332. The arc-shaped baffle 4331 is located at the end of the guide plate 431 furthest from the connecting plate 421, and the two side baffles 4332 are respectively located on both sides of the guide plate 431. When the guide plate 431 rotates, the arc-shaped baffle 4331 and the side baffles 4332 can block the gap between the guide plate 431 and the first support plate 41, thereby preventing the buckwheat from falling to the bottom of the box 1.

[0046] Reference Figure 1 , Figure 7 As shown, a receiving cavity 14 for accommodating suspended impurities is connected to one side of the first chamber 12 on the box body 1. A cleaning mechanism 6 for scooping up suspended impurities and conveying them into the receiving cavity 14 is provided inside the box body 1. The cleaning mechanism 6 includes a cleaning screen 61, a horizontal drive assembly 62 for driving the cleaning screen 61 to move horizontally, and a vertical drive assembly 63 for driving the cleaning screen 61 to move vertically. The height of the receiving cavity 14 is higher than the liquid level in the box body 1, so water in the box body 1 will not flow into the receiving cavity 14. The horizontal drive assembly 62 drives the cleaning screen 61 to move horizontally towards the receiving cavity 14 until it abuts against the inner wall of the box body 1 to scoop up the impurities suspended on the liquid surface. Then, the vertical drive assembly 63 drives the cleaning screen 61 to move upward, so that the scooped impurities can be sent into the receiving cavity 14.

[0047] Reference Figure 7 As shown, the transverse drive assembly 62 includes a support base 621, a drive motor 622, a lead screw 623, and a drive seat 624. The support base 621 is horizontally mounted on the housing 1, and a groove is formed along its length. The lead screw 623 is rotatably mounted in the groove. The drive motor 622 is fixedly mounted at one end of the support base 621, and its output shaft is fixedly connected to the lead screw 623. The drive seat 624 is slidably connected in the groove and threadedly connected to the lead screw 623. Starting the drive motor 622 rotates the lead screw 623, which in turn moves the drive seat 624 along the length of the support base 621, thereby causing the cleaning screen 61 to move horizontally towards the receiving cavity 14. On the other side of the housing 1, there is a guide block 625 and a guide rod 626 to improve the stability of the cleaning screen 61. One end of the guide rod 626 is fixedly connected to the housing 1, and the other end is fixedly connected to the partition 11. The guide block 625 is slidably connected to the guide rod 626.

[0048] Reference Figure 7 , Figure 8 As shown, there are two sets of vertical drive assemblies 63 symmetrically arranged on both sides of the top of the cleaning screen plate 61. Each vertical drive assembly 63 includes a first support rod 631, a second support rod 632, and a tension spring 633. The first support rod 631 of one set of vertical drive assemblies 63 is fixedly connected to the drive base 624, while the first support rod 631 of the other set is fixedly connected to the guide block 625. The end of each first support rod 631 away from the drive base 624 has a mounting groove. One end of the second support rod 632 is slidably disposed within the mounting groove, while the other end is fixedly connected to the cleaning screen plate 61. One end of the tension spring 633 is fixedly connected to the bottom wall of the mounting groove, and the other end is fixedly connected to the second support rod 632.

[0049] Reference Figure 8 , Figure 9 As shown, both sides of the cleaning mesh plate 61 are provided with limiting posts 611, and both sides of the box body 1 are provided with limiting grooves 15 for the limiting posts 611 to slide. The limiting groove 15 includes a first horizontal groove 151, a vertical groove 152, a second horizontal groove 153 and an arc groove 154. The first horizontal groove 151 is located below the second horizontal groove 153. The vertical groove 152 and the arc groove 154 are both connected between the first horizontal groove 151 and the second horizontal groove 153. The vertical groove 152 is located at the end of the first horizontal groove 151 near the receiving cavity 14, and the arc groove 154 is located at the end of the first horizontal groove 151 away from the receiving cavity 14. Initially, the limiting post 611 is located at the end of the first transverse groove 151 away from the receiving cavity 14. At this time, the tension spring 633 is in a stretched state. The lateral drive assembly 62 drives the cleaning screen 61 to move closer to the receiving cavity 14. The cleaning screen 61 drives the limiting post 611 to the end of the first transverse groove 151. Under the elastic force of the tension spring 633, the limiting post 611 can move upward along the vertical groove 152, thereby driving the cleaning screen 61 to scoop up suspended impurities and pour them into the receiving cavity 14. Then, the lateral drive assembly 62 drives the cleaning screen 61 to move back to the initial position away from the receiving cavity 14. During this process, the cleaning screen 61 is located above the liquid surface and will not push the suspended impurities generated during the cleaning process away from the receiving cavity 14. The limiting post 611 moves along the length of the arc-shaped groove 154 and finally returns to the initial position to facilitate the next cleaning operation.

[0050] Reference Figure 9 , Figure 10 As shown, a telescopic stop 16 is provided at the connection between the arc-shaped groove 154 and the first transverse groove 151. A telescopic groove 155 is provided inside the housing 1. The telescopic stop 16 is slidably connected in the telescopic groove 155. A spring plate 161 for driving the telescopic stop 16 to move out of the telescopic groove 155 is connected between the telescopic stop 16 and the bottom wall of the telescopic groove 155. The end of the telescopic stop 16 facing the arc-shaped groove 154 is an arc-shaped surface, and the side of the telescopic stop 16 facing the first transverse groove 151 is a flat surface. The limiting post 611 can drive the telescopic stop 16 into the telescopic groove 155 by pressing against the arc-shaped surface. Therefore, the limiting post 611 can enter the first transverse groove 151 from the arc-shaped groove 154. When the limiting post 611 moves towards the receiving cavity 14 in the first transverse groove 151, the bottom surface of the telescopic stop 16 is flat, so it can block the limiting post 611 and prevent the limiting post 611 from entering the arc-shaped groove 154 from the first transverse groove 151. This can limit the movement trajectory of the limiting post 611, thereby limiting the movement trajectory of the cleaning mesh plate 61.

[0051] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A buckwheat washing and impurity removal device, characterized in that, include: The box (1) is provided with a partition (11) inside the box (1), the partition (11) divides the box (1) into a first chamber (12) and a second chamber (13), the bottom of the first chamber (12) and the second chamber (13) are connected; The stirring mechanism (2) includes a stirring motor (21) and a stirring shaft (22). The stirring shaft (22) is vertically arranged in the first chamber (12). The stirring motor (21) is arranged at the bottom of the box (1) and the output shaft of the stirring motor (21) is fixedly connected to the stirring shaft (22). The screw conveyor (3) is inclinedly arranged in the second chamber (13). The lowest end of the screw conveyor (3) extends into the first chamber (12) and is provided with a feed hopper (31). The highest end of the screw conveyor (3) extends to the outside of the box (1) and is provided with a discharge hopper (32). Screening plate (4), the screening plate (4) is disposed in the first chamber (12), the screening plate (4) includes a first support plate (41) and a second support plate (42), the end of the first support plate (41) away from the second support plate (42) is fixedly connected to the side wall of the box (1), the second support plate (42) is inclinedly disposed on the first support plate (41) and is in contact with the end face of the feed hopper (31), the end of the second support plate (42) away from the first support plate (41) is fixedly connected to the partition plate (11), the second support plate (42) is provided with a through opening that communicates with the opening of the feed hopper (31), the through opening is provided with an opening and closing plate (421), and the first support plate (41) is provided with a guide (43) for guiding the material into the through opening; The first support plate (41) includes an inclined section (411), an arc section (412), and a straight section (413) from the end away from the second support plate (42) to the end near the second support plate (42). The guide member (43) includes a guide plate (431). A notch is provided on the straight section (413). The guide plate (431) is rotatably disposed in the notch. A bending rod (432) is provided on the guide plate (431). The bending rod (432) extends obliquely upward and fits against the opening and closing plate (421). A rotating assembly (5) for driving the guide plate (431) to rotate is provided in the first chamber (12). The bottom of the guide plate (431) is provided with a blocking member (433), the blocking member (433) includes an arc-shaped blocking edge (4331) and two side blocking edges (4332). The arc-shaped blocking edge (4331) is provided at one end of the guide plate (431) away from the connecting plate (421), and the two side blocking edges (4332) are respectively provided on both sides of the guide plate (431). The opening and closing plate (421) is provided with a pressing member (422) on the side facing the inside of the feed hopper (31). The pressing member (422) includes multiple arc-shaped elastic sheets (4221). The arc-shaped elastic sheets (4221) are used to drive the opening and closing plate (421) to rotate outward of the feed hopper (31) to close the opening. The rotating assembly (5) includes a rotating motor (51), a drive shaft (52), and a cam (53). The drive shaft (52) is rotatably connected in the first chamber (12). The cam (53) is fixedly connected to the drive shaft (52), and the outer contour surface of the cam (53) abuts against the bottom surface of the guide plate (431). The rotating motor (51) is located outside the box (1), and the output shaft of the rotating motor (51) is coaxially connected to the drive shaft (52).

2. The buckwheat washing and impurity removal device according to claim 1, characterized in that, A receiving cavity (14) for accommodating suspended impurities is provided on the box body (1) and on one side of the first chamber (12). A cleaning mechanism (6) for retrieval of suspended impurities and conveying the suspended impurities to the receiving cavity (14) is provided inside the box body (1). The cleaning mechanism (6) includes a cleaning screen (61), a horizontal drive assembly (62) for driving the cleaning screen (61) to move in the horizontal direction, and a vertical drive assembly (63) for driving the cleaning screen (61) to move in the vertical direction. The cleaning mesh plate (61) is provided with limit posts (611) on both sides, and the box body (1) is provided with limit grooves (15) on both sides for the limit posts (611) to slide. The limit groove (15) includes a first horizontal groove (151), a vertical groove (152), a second horizontal groove (153) and an arc groove (154). The first horizontal groove (151) is located below the second horizontal groove (153). The vertical groove (152) and the arc groove (154) are both connected between the first horizontal groove (151) and the second horizontal groove (153). The vertical groove (152) is located at the end of the first horizontal groove (151) near the receiving cavity (14), and the arc groove (154) is located at the end of the first horizontal groove (151) away from the receiving cavity (14).

3. The buckwheat washing and impurity removal device according to claim 2, characterized in that, The transverse drive assembly (62) includes a support base (621), a drive motor (622), a lead screw (623), and a drive seat (624). The support base (621) is arranged horizontally on the housing (1). A sliding groove is provided on the support base (621) along its own length. The lead screw (623) is rotatably arranged in the sliding groove. The drive motor (622) is fixedly arranged at one end of the support base (621), and the output shaft of the drive motor (622) is fixedly connected to the lead screw (623). The drive seat (624) is slidably connected in the sliding groove and threadedly connected to the lead screw (623). The vertical drive assembly (63) includes a first support rod (631), a second support rod (632), and a tension spring (633). The first support rod (631) is fixedly mounted on the drive seat (624). The end of the first support rod (631) away from the drive seat (624) has an installation groove. One end of the second support rod (632) is slidably mounted in the installation groove, and the other end is fixedly connected to the cleaning mesh plate (61). One end of the tension spring (633) is fixedly connected to the bottom wall of the installation groove, and the other end is fixedly connected to the second support rod (632).

4. The buckwheat washing and impurity removal device according to claim 2, characterized in that, A telescopic stop block (16) is provided at the connection between the arc-shaped groove (154) and the first transverse groove (151). A telescopic groove (155) is provided inside the housing (1). The telescopic stop block (16) is slidably disposed in the telescopic groove (155). A spring plate (161) for driving the telescopic stop block (16) to move out of the telescopic groove (155) is connected between the telescopic stop block (16) and the bottom wall of the telescopic groove (155). The end of the telescopic stop block (16) facing the arc-shaped groove (154) is an arc-shaped surface, and the side of the telescopic stop block (16) facing the first transverse groove (151) is a flat surface.

5. The buckwheat washing and impurity removal device according to claim 1, characterized in that, The spiral conveying mechanism (3) includes a cylinder (33). Multiple support frames (331) for fixing the position of the cylinder (33) are provided on the inner side wall of the box (1). Spiral blades (34) are provided inside the cylinder (33). A conveying motor (35) is provided at one end of the cylinder (33) outside the box (1). The output shaft of the conveying motor (35) is fixedly connected to the spiral blades (34). Water-permeable holes are provided on both the cylinder (33) and the spiral blades (34).

6. The buckwheat washing and impurity removal device according to claim 1, characterized in that, A guide hopper (17) for introducing materials into the first chamber (12) is provided on one side of the box (1). The guide hopper (17) is fixedly installed on the box (1) by a bracket (171) and the height of the guide hopper (17) is higher than the height of the box (1). A fan (7) is provided on the top of the partition (11). A flared air pipe (71) is provided at the air outlet of the fan (7). The flared air pipe (71) is located between the guide hopper (17) and the box (1) and can blow impurities in the material out of the box (1).

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