Maltodextrin refining device

Abstract

The invention relates to the technical field of starch extraction of maltodextrin, and discloses a maltodextrin refining device which comprises a screening barrel, a feeding mechanism is arranged at the top of the screening barrel, the feeding mechanism comprises a feeding hopper and a bidirectional discharging pipe, and the feeding hopper is fixedly arranged at the top end of the screening barrel. During use, through the arrangement of the feeding mechanism and the smoothing and cleaning mechanism, the function of controlling the hopper cover can be achieved, raw materials can be conveniently added, the raw materials can be evenly thrown to the top of the screen plate through the change of the centrifugal force, the labor intensity of workers can be greatly relieved in cooperation with the vibration of the screen plate and the flattening function of a smoothing scraper, and the working efficiency is improved. And after screening work is finished, the cleaning roller brush can rotate when rotating along with the mounting plate, the function of cleaning foreign matter on the top of the screening plate is achieved, the foreign matter can be collected through cooperation with the arrangement of the collecting box, follow-up workers can conduct centralized cleaning conveniently, and the cleaning effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of extracting maltodextrin from starch, and more specifically to a maltodextrin refining device. Background Art

[0002] Maltodextrin is a starch sugar derivative made from starch through gelatinization, enzymolysis and other processes. It is an excellent functional food raw material with good solubility, stability, low friction coefficient, good gloss and other characteristics. When starch is decomposed and hydrolyzed by heating or amylase, the large-molecule starch is first converted into a small-molecule intermediate substance. At this time, the intermediate small-molecule substance is called dextrin. Maltodextrin is a safe, non-toxic, non-allergenic food additive. It is widely used in the food industry for its excellent transparency, stability and taste. Candies, chewing gum, chocolate and other foods made from maltodextrin can increase the stability of their texture, improve the quality of the goods, and make consumers feel a more comfortable taste. In addition, maltodextrin is also widely used in the fields of medicine, cosmetics, etc. It can be used to adjust the solubility of drugs, enhance the viscosity of cosmetics, and so on.

[0003] In the process of refining maltodextrin, a series of steps such as raw material preparation, slurry preparation, enzymolysis, enzyme inactivation, filtration, decolorization, concentration, and drying are often required. In the prior art, when preparing raw materials, workers often need to screen the starch raw materials through a screening device. The following problems often occur during the screening process: 1. In the prior art, in order to avoid blockage during the feeding process, the staff usually evenly sprinkles the starch raw materials into the screening device little by little for screening, which greatly increases the labor intensity of the staff; 2. In the process of adding raw materials, in order to increase the screening rate, the staff is required to evenly spread the raw materials on the surface of the screen plate to prevent the raw materials from piling up on the surface of the screen plate. The operation is relatively cumbersome, and dust will escape during the process of spreading the raw materials, causing harm to the staff; 3. After screening, the staff is required to clean the large foreign matter on the surface of the screen plate. Due to the uneven distribution of foreign matter, the staff needs to observe carefully during cleaning to realize the cleaning function, which is cumbersome. Summary of the invention

[0004] In order to overcome the above defects of the prior art, the present invention provides a maltodextrin refining device to solve the problems existing in the above background technology.

[0005] The present invention provides the following technical scheme: a maltodextrin refining device comprises a screening barrel, a feeding mechanism is arranged on the top of the screening barrel, the feeding mechanism comprises a feeding hopper and a two-way discharging pipe, the feeding hopper is fixedly arranged on the top of the screening barrel, a hopper cover is movably installed on the feeding hopper, the two-way discharging pipe is rotatably installed in the screening barrel, the two-way discharging pipe is connected to the feeding hopper through a rotating assembly, the rotating assembly is used to drive the two-way discharging pipe to realize a variable speed rotation function, a sieve plate is arranged in the screening barrel, the sieve plate is movably installed in the screening barrel, a smoothing and cleaning mechanism is arranged in the screening barrel, the smoothing and cleaning mechanism The mechanism includes a rotating rod and a mounting plate. The top end of the rotating rod is fixedly mounted on the bottom of the two-way discharge pipe, and the bottom end of the rotating rod extends into the mounting plate and is movably connected to the mounting plate. The mounting plate and the screen plate are jointly provided with a vibration component, and the vibration component is controlled by the rotation of the rotating rod. The vibration component is used to drive the screen plate to lift and lower. A smoothing scraper and a U-shaped mounting plate are slidably mounted in the mounting plate, and a cleaning roller brush is rotatably mounted in the U-shaped mounting plate. The smoothing scraper and the cleaning roller brush are symmetrically arranged, and the smoothing scraper and the U-shaped mounting plate are lifted and lowered by the clockwise and counterclockwise rotation of the two-way discharge pipe.

[0006] Furthermore, the feeding mechanism also includes a mounting shaft, a U-shaped lifting groove is provided on the top of the feeding hopper, and mounting holes are provided on the side inner walls of the U-shaped lifting groove that are close to each other, and the mounting shaft is rotatably installed in the two mounting holes, and the hopper cover is fixedly sleeved on the circumferential outer wall of the mounting shaft, and two first limit shafts are fixedly installed on the relative inner walls of the U-shaped lifting groove, and a rectangular lifting plate is slidably installed on the two first limit shafts, and the circumferential outer walls of the two first limit shafts are sleeved with a first compression spring, and two lifting racks are fixedly installed on the top of the rectangular lifting plate, and two flip gears are fixedly sleeved on the circumferential outer wall of the mounting shaft, and the two lifting racks are respectively meshed with the two flip gears.

[0007] Furthermore, the feeding mechanism also includes a lifting shaft, two fixed shaft sleeves are fixedly installed on the peripheral outer wall of the screening barrel, the lifting shaft is slidably installed in the two fixed shaft sleeves, an upper connecting rod is rotatably installed on the top of the lifting shaft, a connecting hole is provided on the side inner wall of the U-shaped lifting groove, the other end of the upper connecting rod extends into the connecting hole and is rotatably connected to the side of the rectangular lifting plate, and four supporting legs are provided at the bottom end of the screening barrel, a fixing plate is installed on each of the two matching supporting legs, and square holes are provided on the sides of the two fixing plates, and square extrusion rods are slidably installed in the two square holes, a lower connecting rod is rotatably installed on one end of the square extrusion rod, and the other end of the lower connecting rod is rotatably installed on the bottom end of the lifting shaft, a kick plate is fixedly installed on the other end of the square extrusion rod, and a return spring is provided on the peripheral outer wall of the square extrusion rod.

[0008] Furthermore, the rotating assembly includes an upper fixed tube and a lower rotating tube, a transmission cavity is opened in the screening barrel, and the relative inner walls of the transmission cavity are opened with through holes, the upper fixed tube is fixedly arranged on the circumferential inner wall of the through hole located above, the top end of the upper fixed tube is communicated with the bottom inner wall of the feed hopper, the lower rotating tube is rotatably installed on the circumferential inner wall of the through hole located below, the circumferential inner wall of the top end of the lower rotating tube is rotatably connected with the circumferential outer wall of the bottom end of the upper fixed tube, a circular hole is opened on the top inner wall of the two-way discharge pipe, the bottom end of the lower rotating tube extends into the screening barrel and is fixedly connected to the circumferential inner wall of the circular hole, the circumferential outer wall of the lower rotating tube is fixedly sleeved with a large gear, and a driving motor is fixedly installed on the top of the screening barrel, the output shaft of the driving motor extends into the transmission cavity and is fixedly sleeved with an incomplete gear, and the incomplete gear is meshed and installed with the large gear.

[0009] Furthermore, the rotating assembly also includes a rotating shaft, both ends of which are rotatably installed on the relative inner walls of the transmission chamber, a small gear is fixedly sleeved on the circumferential outer wall of the rotating shaft, and the small gear is meshed with the incomplete gear. A large sprocket and a small sprocket are respectively fixedly sleeved on the circumferential outer wall of the lower rotating tube and the rotating shaft, and a chain is meshed and installed on the large sprocket and the small sprocket, and an anti-blocking auger is fixedly installed on the bottom inner wall of the two-way discharge pipe, and the top of the anti-blocking auger passes through the lower rotating tube and the upper fixed tube and extends into the feed hopper.

[0010] Furthermore, four square plates are fixedly installed on the circumferential inner wall of the screening barrel, and the four square plates are fixedly installed on the circumferential inner wall of the screening barrel. A second limiting shaft is fixedly installed on the top of the four square plates. The screen plate is slidably installed on the four second limiting shafts, and the circumferential outer walls of the four second limiting shafts are sleeved with second compression springs. An annular limiting groove is opened on the circumferential inner wall of the screening barrel, and two arc-shaped limiting blocks are slidably installed in the annular limiting groove. Both sides of the mounting plate are arc-shaped, and the circumferential inner walls of the two arc-shaped limiting blocks are fixedly connected to the circumferential outer wall of the mounting plate.

[0011] Furthermore, the vibration component includes a plurality of triangular extrusion blocks and extrusion balls, and the plurality of triangular extrusion blocks are fixedly mounted on the top of the sieve plate, and the plurality of triangular extrusion blocks are distributed in a circle, and a circular cavity is opened in the mounting plate, and the bottom end of the rotating rod passes through the mounting plate and is rotatably mounted on the bottom inner wall of the circular cavity, and the peripheral outer wall of the mounting plate is fixedly sleeved with a fixing sleeve, and the peripheral outer wall of the fixing sleeve is fixedly mounted with an extrusion plate, and the peripheral inner wall of the circular cavity is fixedly mounted with two limiting plates, and the two limiting plates are symmetrically arranged and are both adapted to the extrusion plate, and the bottom of the extrusion plate is fixedly mounted with an annular inner rack A first rotating hole is opened on the inner wall of the bottom end of the circular cavity, and a first screw guide sleeve is rotatably installed in the first rotating hole. A transmission gear is fixedly sleeved on the outer wall of the circumferential side of the first screw guide sleeve, and the transmission gear is meshed and installed with the annular inner rack. A first screw is installed with an internal thread of the first screw guide sleeve, and a rectangular spherical shell is fixedly installed on the bottom end of the first screw. The extrusion ball is movably arranged in the rectangular spherical shell and corresponds to the positions of the plurality of triangular extrusion blocks. A guide hole is opened on the inner wall of the bottom end of the circular cavity, and a guide shaft is slidably installed in the guide hole, and the bottom end of the guide shaft is fixedly connected to the top of the rectangular spherical shell.

[0012] Furthermore, two receiving grooves are provided at the bottom of the mounting plate, and the smoothing scraper and the U-shaped mounting plate are respectively slidably installed in the two receiving grooves, and two transmission grooves are provided on the inner wall of the circumferential side of the circular cavity, and two second rotating holes are provided on the bottom inner wall of each transmission groove, and a second screw guide sleeve is rotatably installed in each second rotating hole, and each of the two matching second screw guide sleeves is connected to the rotating rod through an extrusion assembly, and a second screw is threadedly installed in four second screw guide sleeves, and the bottom ends of the four second screws are respectively fixedly connected to the smoothing scraper and the top of the U-shaped mounting plate.

[0013] Furthermore, the extrusion assembly includes a cam and a U-shaped plate, the cam is fixedly sleeved on the rotating rod, a third limiting shaft is fixedly installed on the side inner wall of the transmission groove, a limiting hole is opened on one side inner wall of the U-shaped plate, the third limiting shaft is slidably installed in the limiting hole, a third compression spring is sleeved on the circumferential outer wall of the third limiting shaft, the circumferential outer walls of the two second screw guide sleeves are fixedly sleeved with rotating gears, and a matching rack is fixedly installed on the side inner wall of the U-shaped plate, and the matching rack is meshed with the two rotating gears.

[0014] Furthermore, a connecting hole is provided on the inner wall of one side of the U-shaped mounting plate, and a cleaning shaft is rotatably installed on the inner wall of the other side of the U-shaped mounting plate, the other end of the cleaning shaft extends to the outside of the connecting hole and is fixedly sleeved with a small bevel gear, the cleaning roller brush is fixedly sleeved on the cleaning shaft, an annular protective plate is fixedly installed on the top of the screen plate, and a large bevel gear is fixedly sleeved on the outer wall of the peripheral side of the annular protective plate, and a T-shaped groove is provided at the bottom of the mounting plate and the bottom of the U-shaped plate, a T-shaped slider is slidably installed in the T-shaped groove, and a collecting box is fixedly installed on the bottom of the T-shaped slider, and the collecting box is adapted to the cleaning roller brush, and an arc-shaped hole is provided on the outer wall of the peripheral side of the screening barrel, and a side cover is hingedly installed in the arc-shaped hole, and the position of the side cover corresponds to the collection box.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Apply pressure to the kick plate with the foot to drive the square extrusion rod to move horizontally, thereby driving the lifting shaft to move downward under the connecting action of the lower connecting rod, and driving the rectangular lifting plate and the two lifting racks to move downward synchronously through the connecting action of the upper connecting rod. Through the meshing action of the two lifting racks and the two flipping gears, the mounting shaft and the bucket cover are driven to rotate ninety degrees, which is convenient for the staff to put the bagged starch raw materials into the feed hopper at one time with both hands, without the need to use tools for frequent addition, and after contacting the pressure on the kick plate, the bucket cover is driven to reversely flip and reset through the cooperation of the reset spring and the two first compression springs to achieve closure. This arrangement can effectively prevent dust from escaping during the feeding process and causing harm to the staff.

[0016] 2. By starting the driving motor, the incomplete gear is driven to rotate at a constant speed. When the incomplete gear is meshed with the large gear, it can drive the lower rotating tube to rotate at a reduced speed. When the lower rotating tube rotates, it drives the two-way discharge pipe and the anti-blocking auger to rotate synchronously. Through the action of the anti-blocking auger, the starch raw material will not accumulate in the feed hopper and the upper fixed tube, so that the material dropping effect is uniform, and when the two-way discharge pipe rotates, the raw material is thrown to a nearby place under the action of centrifugal force; when the incomplete gear is meshed with the small gear, the small gear is driven to rotate faster, thereby driving the rotating shaft to rotate synchronously. When the rotating shaft rotates, the lower rotating tube is rotated through the transmission action of the small sprocket, the large sprocket and the chain. Since the size of the large sprocket is smaller than the large gear, the lower rotating tube is in an accelerated rotation state. At this time, under the action of centrifugal force, the raw material is thrown to a distance. In this way, different centrifugal forces can be provided through different rotation speeds of the lower rotating tube, so that the material is thrown to different positions, and the uniform spreading function is achieved, avoiding manual spreading, reducing labor intensity, and the spreading effect is better.

[0017] 3. When the cam rotates clockwise, one of the U-shaped plates can be squeezed, causing the U-shaped plate to move horizontally. When it moves horizontally, it drives the matching rack to move synchronously and engage with the two rotating gears, thereby driving the two second screw guide sleeves to rotate. Through the action of the thread, the two second screws move downward, driving the smoothing scraper to move downward synchronously, flattening the starch raw materials that fall on the top of the screen plate, further improving the screening rate.

[0018] 4. By starting the driving motor to rotate its output shaft clockwise, it can drive the lower rotating tube, rotating rod, fixed sleeve, extrusion plate, and cam to rotate counterclockwise synchronously. When the extrusion plate rotates counterclockwise, it drives the annular inner rack to rotate synchronously, thereby driving the extrusion ball to move upward and reset to prevent the mounting plate from getting stuck during the rotation process. During the counterclockwise rotation of the cam, the extrusion of one of the U-shaped plates is first released, thereby driving the smoothing scraper to reset under the elastic action of the third compression spring. When the cam continues to rotate counterclockwise, it squeezes the other U-shaped plate, thereby driving the U-shaped mounting plate to move downward, so that the small bevel gear is meshed with the large bevel gear, and the cleaning roller brush contacts the surface of the screen plate. When the extrusion plate contacts the other limit plate, the mounting plate is driven to rotate counterclockwise synchronously through the extrusion action. At this time, through the meshing action of the small bevel gear and the large bevel gear, the cleaning shaft and the cleaning roller brush can be driven to rotate, and large particles of foreign matter are cleaned into the collection box. Finally, the side cover is opened and the T-shaped slider is pulled out, so that the collection box is removed for centralized cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of this embodiment; Figure 2 This is a schematic diagram of the partial cutaway structure of the feed hopper in this embodiment; Figure 3 for Figure 2 The enlarged structural diagram at A in the middle; Figure 4 This is a schematic diagram of the partial cross-section structure of the screening barrel and the fixed plate in this embodiment; Figure 5 This is a schematic diagram of the partial cutaway structure of the screening barrel in this embodiment; Figure 6 for Figure 5 The enlarged structural diagram at B in the middle; Figure 7 This is a schematic diagram of the cutaway structure of the upper fixed tube and the lower rotating tube in this embodiment; Figure 8 This is a schematic diagram of the partial cutaway structure of the screening barrel in this embodiment; Fig. 9 for Figure 8 The enlarged structural diagram at C in the middle; Fig.10 This is a schematic diagram of the partial cutaway structure of the sieve plate and the annular protective plate in this embodiment; Fig.11 for Fig.10 The enlarged structural diagram at D in the middle; Fig.12 This is a partially cutaway and enlarged structural schematic diagram of the right side of the mounting plate in this embodiment; Fig.13 for Fig.12 The enlarged structural diagram at E in the middle; Fig.14 for Fig.12 The enlarged structural diagram at F in the middle; Fig.15 This is a schematic diagram of a partially cutaway and enlarged structure of the left side of the mounting plate in this embodiment; Fig.16 This is a schematic diagram of the cross-sectional structure of the U-shaped mounting plate in this embodiment; Fig.17 for Fig.16 The enlarged structural diagram at G in the middle; Fig.18 This is a top view of the top of the mounting plate in this embodiment; Fig.19 for Fig.18 Enlarged structural diagram at H in the middle.

[0020] The accompanying drawings are marked as follows: 1. screening barrel; 2. feed hopper; 3. hopper cover; 4. rectangular lifting plate; 5. first limit shaft; 6. first compression spring; 7. lifting rack; 8. mounting shaft; 9. flip gear; 10. upper connecting rod; 11. fixed shaft sleeve; 12. lifting shaft; 13. lower connecting rod; 14. square extrusion rod; 15. fixed plate; 16. reset spring; 17. kick plate; 18. two-way discharge pipe; 19. upper fixed pipe; 20. anti-blocking auger; 21. large gear; 22. lower rotating pipe; 23. large sprocket; 24. chain; 25. driving motor; 26. incomplete gear; 28. small sprocket; 29. ​​rotating shaft; 30. small gear; 31. rotating rod; 32. mounting plate; 33. sieve plate; 34. square plate; 35. second Limiting shaft; 36, second compression spring; 37, arc-shaped limiting block; 38, annular limiting groove; 39, annular protective plate; 40, large bevel gear; 41, triangular extrusion block; 42, smoothing scraper; 43, U-shaped plate; 44, fixing sleeve; 45, first screw guide sleeve; 46, transmission gear; 47, first screw; 48, rectangular spherical shell; 49, extrusion ball; 50, guide shaft; 51, annular inner rack; 52, extrusion plate; 53, limiting plate; 54, cam; 55, rotating gear; 56, second screw guide sleeve; 57, second screw; 58, third limiting shaft; 59, third compression spring; 60, U-shaped mounting plate; 61, cleaning roller brush; 62, cleaning shaft; 63, small bevel gear; 64, T-shaped slider; 65, collecting box. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still belong to the scope of protection of the present application.

[0022] Figure 1-Figure 19 The best embodiment of the present invention is shown below in conjunction with the attached Figure 1-Figure 19 The present invention is further described.

[0023] A maltodextrin refining device comprises a screening barrel 1, a feeding mechanism is arranged on the top of the screening barrel 1, the feeding mechanism comprises a feeding hopper 2 and a two-way discharge pipe 18, the feeding hopper 2 is fixedly arranged on the top of the screening barrel 1, a hopper cover 3 is movably installed on the feeding hopper 2, the two-way discharge pipe 18 is rotatably installed in the screening barrel 1, the two-way discharge pipe 18 is connected to the feeding hopper 2 by a rotating assembly, the rotating assembly is used to drive the two-way discharge pipe 18 to realize the variable speed rotation function, a sieve plate 33 is arranged in the screening barrel 1, the sieve plate 33 is movably installed in the screening barrel 1, a smoothing and cleaning mechanism is arranged in the screening barrel 1, the smoothing and cleaning mechanism comprises a rotating rod 31, a mounting plate 32, a rotating rod 33, a rotating rod 34, a rotating rod 35, a rotating rod 36, a rotating rod 37, a rotating rod 38, a rotating rod 39, a rotating rod 31, a rotating rod 31, a rotating rod 32, a rotating rod 33, a rotating rod 34, a rotating rod 35, a rotating rod 36, a rotating rod 37, a rotating rod 38, a rotating rod 39, a rotating rod 39, a rotating rod 31, a rotating rod 32, a rotating rod 3 ... The top end of the rod 31 is fixedly installed on the bottom of the two-way discharge pipe 18, and the bottom end of the rotating rod 31 extends into the mounting plate 32 and is movably connected with the mounting plate 32. A vibration component is commonly provided on the mounting plate 32 and the screen plate 33, and the vibration component is controlled by the rotation of the rotating rod 31. The vibration component is used to drive the screen plate 33 to rise and fall. A smoothing scraper 42 and a U-shaped mounting plate 60 are slidingly installed in the mounting plate 32, and a cleaning roller brush 61 is rotatably installed in the U-shaped mounting plate 60. The smoothing scraper 42 and the cleaning roller brush 61 are symmetrically arranged, and the smoothing scraper 42 and the U-shaped mounting plate 60 are lifted and lowered by the clockwise and counterclockwise rotation of the two-way discharge pipe 18.

[0024] In order to enable the bucket cover 3 to realize the flip opening and closing function, the following features are also specifically provided: The feeding mechanism also includes a mounting shaft 8. A U-shaped lifting groove is provided on the top of the feed hopper 2. The inner walls of the sides of the U-shaped lifting groove that are close to each other are provided with mounting holes. The mounting shaft 8 is rotatably installed in the two mounting holes. The bucket cover 3 is fixedly sleeved on the outer wall of the surrounding side of the mounting shaft 8. Two first limiting shafts 5 are fixedly installed on the relative inner walls of the U-shaped lifting groove. A rectangular lifting plate 4 is slidably installed on the two first limiting shafts 5. The outer walls of the surrounding sides of the two first limiting shafts 5 are sleeved with first compression springs 6. Two lifting racks 7 are fixedly installed on the top of the rectangular lifting plate 4. Two flip gears 9 are fixedly sleeved on the outer walls of the surrounding sides of the mounting shaft 8. The two lifting racks 7 are respectively meshed with the two flip gears 9. Through the setting of the two lifting racks 7, the rectangular lifting plate 4 can be driven to move downward synchronously when it moves downward, and mesh with the two flip gears 9. Through the meshing action, the mounting shaft 8 and the bucket cover 3 are driven to flip ninety degrees to realize the opening and closing function.

[0025] In order to more conveniently control the opening and closing of the bucket cover 3 during the pouring process, the following features are also specifically provided: The feeding mechanism also includes a lifting shaft 12, two fixed shaft sleeves 11 are fixedly installed on the peripheral outer wall of the screening barrel 1, and the lifting shaft 12 is slidably installed in the two fixed shaft sleeves 11. The top of the lifting shaft 12 is rotatably installed with an upper connecting rod 10, and a connecting hole is provided on the side inner wall of the U-shaped lifting groove. The other end of the upper connecting rod 10 extends into the connecting hole and is rotatably connected to the side of the rectangular lifting plate 4. Four supporting legs are provided at the bottom end of the screening barrel 1, and a fixing plate 15 is installed on each of the two matching supporting legs. The sides of the two fixing plates 15 are provided with square holes, and the two square holes are slidably installed together. There is a square extrusion rod 14, one end of the square extrusion rod 14 is rotatably installed with a lower connecting rod 13, the other end of the lower connecting rod 13 is rotatably installed on the bottom end of the lifting shaft 12, and the other end of the square extrusion rod 14 is fixedly installed with a kick plate 17. The outer wall of the peripheral side of the square extrusion rod 14 is sleeved with a return spring 16. This arrangement enables the staff to squeeze the kick plate 17 with their feet when holding the starch raw material with both hands, thereby driving the rectangular lifting plate 4 to move downward under the transmission action of the square extrusion rod 14, the lower connecting rod 13, the lifting shaft 12, and the upper connecting rod 10, thereby realizing the control function of the bucket cover 3.

[0026] In order to drive the bidirectional discharge pipe 18 to rotate and discharge materials, the following features are also specifically provided: The rotating assembly includes an upper fixed tube 19 and a lower rotating tube 22. A transmission cavity is provided in the screening barrel 1. Through holes are provided on the opposite inner walls of the transmission cavity. The upper fixed tube 19 is fixedly arranged on the inner wall of the peripheral side of the upper through hole. The top end of the upper fixed tube 19 is connected to the bottom inner wall of the feed hopper 2. The lower rotating tube 22 is rotatably installed on the inner wall of the peripheral side of the through hole below. The inner wall of the peripheral side of the top end of the lower rotating tube 22 is rotatably connected to the outer wall of the peripheral side of the bottom end of the upper fixed tube 19. A circular hole is provided on the top inner wall of the two-way discharge pipe 18. The bottom end of the lower rotating tube 22 extends into the screening barrel 1 and is connected to the peripheral side of the circular hole. The inner wall is fixedly connected, and a large gear 21 is fixedly sleeved on the outer wall of the circumference of the lower rotating tube 22. A driving motor 25 is fixedly installed on the top of the screening barrel 1. Specifically, the driving motor 25 is controlled by a PLC controller. The output shaft of the driving motor 25 extends into the transmission cavity and is fixedly sleeved with an incomplete gear 26. The incomplete gear 26 is meshed and installed with the large gear 21. In this way, when the incomplete gear 26 rotates, it meshes with the large gear 21, driving the large gear 21 and the lower rotating tube 22 to realize the rotation function, thereby driving the two-way discharge pipe 18 to realize the rotation discharge function.

[0027] In order to adjust the speed of the bidirectional discharge pipe 18 during rotation, the following features are also specifically provided: The rotating assembly also includes a rotating shaft 29, both ends of which are rotatably mounted on the opposite inner walls of the transmission chamber, a pinion 30 is fixedly sleeved on the peripheral outer wall of the rotating shaft 29, and the pinion 30 is meshed with the incomplete gear 26. The large sprocket 23 and the small sprocket 28 are fixedly sleeved on the peripheral outer walls of the lower rotating tube 22 and the rotating shaft 29, respectively, and the chain 24 is meshed and mounted on the large sprocket 23 and the small sprocket 28. The bottom inner wall of the two-way discharge pipe 18 is fixedly mounted with an anti-blocking auger 20, and the top of the anti-blocking auger 20 passes through the lower rotating tube 22 and the upper fixed tube 19 and extends into the feed hopper 2. Through the meshing action of the incomplete gear 26 and the pinion 30, the rotating shaft 29 can be driven to rotate faster, thereby driving the lower rotating tube 22 to rotate faster through the meshing action of the large sprocket 23, the small sprocket 28 and the chain 24, thereby changing the centrifugal force and evenly spreading the material on the top of the screen plate 33.

[0028] In order to realize the vibration reset function of the sieve plate 33, the following features are also specifically provided: Four square plates 34 are fixedly installed on the inner wall of the circumference of the screening barrel 1, and the four square plates 34 are all fixedly installed on the inner wall of the circumference of the screening barrel 1. Second limiting shafts 35 are fixedly installed on the tops of the four square plates 34. The sieve plate 33 is slidably installed on the four second limiting shafts 35. The outer walls of the circumference of the four second limiting shafts 35 are sleeved with second compression springs 36. An annular limiting groove 38 is opened on the inner wall of the circumference of the screening barrel 1, and two arc-shaped limiting blocks 37 are slidably installed in the annular limiting groove 38. Both sides of the mounting plate 32 are arc-shaped in design, and the inner walls of the circumference of the two arc-shaped limiting blocks 37 are fixedly connected to the outer walls of the circumference of the mounting plate 32. In this way, the sieve plate 33 can be limited by multiple second limiting shafts 35, and after the extrusion effect disappears, the elastic action of the second compression springs 36 drives the sieve plate 33 to achieve the reset function.

[0029] In order to realize the squeezing function of the sieve plate 33, the following features are also specifically provided: The vibration assembly includes a plurality of triangular extrusion blocks 41 and an extrusion ball 49. The plurality of triangular extrusion blocks 41 are fixedly mounted on the top of the sieve plate 33. The plurality of triangular extrusion blocks 41 are distributed in a circle. A circular cavity is provided in the mounting plate 32. The bottom end of the rotating rod 31 passes through the mounting plate 32 and is rotatably mounted on the bottom inner wall of the circular cavity. A fixing sleeve 44 is fixedly sleeved on the peripheral outer wall of the mounting plate 32. An extrusion plate 52 is fixedly mounted on the peripheral outer wall of the fixing sleeve 44. Two limiting plates 53 are fixedly mounted on the peripheral inner wall of the circular cavity. The two limiting plates 53 are symmetrically arranged and are both adapted to the extrusion plate 52. An annular inner rack 51 is fixedly mounted on the bottom of the extrusion plate 52. A first rotating hole is provided in the bottom inner wall of the circular cavity. A first screw guide sleeve 45 is rotatably mounted in the first rotating hole. A transmission screw is fixedly sleeved on the peripheral outer wall of the first screw guide sleeve 45. The movable gear 46 and the transmission gear 46 are meshed and installed with the annular inner rack 51. The first screw guide sleeve 45 is threadedly installed with the first screw 47. The bottom end of the first screw 47 is fixedly installed with a rectangular ball shell 48. The extrusion ball 49 is movably arranged in the rectangular ball shell 48 and corresponds to the position of the multiple triangular extrusion blocks 41. A guide hole is opened on the inner wall of the bottom end of the circular cavity. A guide shaft 50 is slidably installed in the guide hole. The bottom end of the guide shaft 50 is fixedly connected to the top of the rectangular ball shell 48. The extrusion plate 52 and the annular inner rack 51 are driven to rotate clockwise through the rotating rod 31. The first screw guide sleeve 45 can be driven to rotate through the meshing action with the transmission gear 46, thereby driving the extrusion ball 49 to move downward to a suitable position under the action of the thread, and the screen plate 33 is extruded through the extrusion action between it and the multiple triangular extrusion blocks 41.

[0030] In order to drive the smoothing scraper 42 and the U-shaped mounting plate 60 to move up and down, the following features are also specifically provided: Two receiving grooves are provided at the bottom of the mounting plate 32, and the smoothing scraper 42 and the U-shaped mounting plate 60 are slidably installed in the two receiving grooves respectively. Two transmission grooves are provided on the inner wall of the circumferential side of the circular cavity, and two second rotating holes are provided on the bottom inner walls of the two transmission grooves. A second screw guide sleeve 56 is rotatably installed in each second rotating hole. Four second screw guide sleeves 56 are rotatably installed in the four second rotating holes respectively, and each of the two matching second screw guide sleeves 56 is connected to the rotating rod 31 through an extrusion assembly. Second screws 57 are threadedly installed in the four second screw guide sleeves 56, and the bottom ends of the four second screws 57 are fixedly connected to the tops of the smoothing scraper 42 and the U-shaped mounting plate 60 respectively. Through the threaded action of the two second screw guide sleeves 56 when rotating, the smoothing scraper 42 and the U-shaped mounting plate 60 can be driven to realize lifting movement in the storage groove, thereby realizing the leveling of the starch raw material or the cleaning function of the screen plate 33.

[0031] In order to control the lifting and lowering movement of the smoothing scraper 42 and the U-shaped mounting plate 60, the following features are also specifically provided: The extrusion assembly includes a cam 54 and a U-shaped plate 43. The cam 54 is fixedly sleeved on the rotating rod 31. A third limiting shaft 58 is fixedly installed on the inner wall of the side of the transmission groove. A limiting hole is provided on the inner wall of one side of the U-shaped plate 43. The third limiting shaft 58 is slidably installed in the limiting hole. A third compression spring 59 is sleeved on the outer wall of the peripheral side of the third limiting shaft 58. The outer walls of the peripheral sides of the two second screw guide sleeves 56 are fixedly sleeved with rotating gears 55. A matching rack is fixedly installed on the inner wall of the side of the U-shaped plate 43. The matching rack It is installed in meshing with the two rotating gears 55. Through the clockwise or counterclockwise rotation of the cam 54, the two U-shaped plates 43 can be squeezed respectively, so that through the meshing action of the matching rack and the two rotating gears 55, the two second screw guide sleeves 56 are driven to rotate. This arrangement can make it possible for the squeezing ball 49 to descend synchronously when the smoothing scraper 42 moves downward to achieve vibration and paving. When the U-shaped plate 43 moves upward, the squeezing ball 49 can rise and reset to avoid jamming during rotation.

[0032] In order to realize the cleaning function of the top of the sieve plate 33, the following features are also specifically set: A connecting hole is provided on the inner wall of one side of the U-shaped mounting plate 60, and a cleaning shaft 62 is rotatably installed on the inner wall of the other side of the U-shaped mounting plate 60. The other end of the cleaning shaft 62 extends out of the connecting hole and is fixedly sleeved with a small bevel gear 63. The cleaning roller brush 61 is fixedly sleeved on the cleaning shaft 62. An annular protective plate 39 is fixedly installed on the top of the sieve plate 33, and a large bevel gear 40 is fixedly sleeved on the outer wall of the peripheral side of the annular protective plate 39. The bottom of the mounting plate 32 and the bottom of the U-shaped plate 43 are jointly provided with a T-shaped groove. A T-shaped slider 64 is slidably installed in the groove, and a collecting box 65 is fixedly installed at the bottom of the T-shaped slider 64. The collecting box 65 is adapted to the cleaning roller brush 61. An arc-shaped hole is opened on the outer wall of the peripheral side of the screening barrel 1, and a side cover is hingedly installed in the arc-shaped hole. The position of the side cover corresponds to the collecting box 65. Through the meshing action of the large bevel gear 40 and the small bevel gear 63, the cleaning roller brush 61 can realize self-rotation during the rotation of the mounting plate 32, and brush the cleaned foreign matter into the collecting box 65 for collection.

[0033] The working principle and use process of the present invention are as follows: when in use, after the staff disassembles the bagged starch raw materials, they apply pressure to the kick plate 17 with their feet to drive the square extrusion rod 14 to move horizontally, thereby driving the lifting shaft 12 to move downward under the connecting action of the lower connecting rod 13, and driving the rectangular lifting plate 4 and the two lifting racks 7 to move downward synchronously through the connecting action of the upper connecting rod 10, and driving the mounting shaft 8 and the bucket cover 3 to rotate ninety degrees through the meshing action of the two lifting racks 7 and the two flipping gears 9, so that the staff can put the bagged starch raw materials into the feed hopper 2 at one time with both hands, without the need to use tools for frequent addition, and after contacting the pressure on the kick plate 17, the bucket cover 3 is driven to reversely flip and reset through the cooperation of the reset spring 16 and the two first compression springs 6 to achieve closure. This arrangement can effectively prevent dust from escaping during the feeding process and causing harm to the staff.

[0034] After the starch raw material is added into the feed hopper 2, the driving motor 25 is started to drive the incomplete gear 26 to rotate at a constant speed. When the incomplete gear 26 is meshed with the large gear 21, it can drive the lower rotating tube 22 to rotate at a reduced speed. When the lower rotating tube 22 rotates, it drives the two-way discharge pipe 18 and the anti-blocking auger 20 to rotate synchronously. Through the action of the anti-blocking auger 20, the starch raw material will not accumulate in the feed hopper 2 and the upper fixed pipe 19, so that the material dropping effect is uniform, and when the two-way discharge pipe 18 rotates, the raw material is thrown to a nearby place under the action of centrifugal force; when the incomplete gear 26 is meshed with the small gear 30, it drives the small gear 30 to rotate synchronously. The wheel 30 accelerates to rotate, thereby driving the rotating shaft 29 to realize synchronous rotation. When the rotating shaft 29 rotates, the transmission action of the small sprocket 28, the large sprocket 23 and the chain 24 causes the lower rotating tube 22 to rotate. Since the large sprocket 23 is smaller than the large gear 21, the lower rotating tube 22 is in an accelerated rotation state. At this time, the raw materials are thrown to a distance under the action of centrifugal force. In this way, the different rotation speeds of the lower rotating tube 22 can provide different centrifugal forces, so that the materials are thrown to different positions, and the uniform spreading function is realized, thereby avoiding manual spreading, reducing labor intensity, and achieving a better spreading effect.

[0035] When the screening barrel 1 is performing screening work, the output shaft of the driving motor 25 rotates counterclockwise, thereby driving the lower rotating tube 22 to rotate clockwise at a variable speed. At this time, the two-way discharge pipe 18 and the rotating rod 31 rotate synchronously clockwise, and the fixing sleeve 44 and the extrusion plate 52 rotate synchronously clockwise through the rotating rod 31. When the extrusion plate 52 rotates clockwise, the annular inner rack 51 is driven to rotate synchronously, and the first screw guide sleeve 45 is driven to rotate through the meshing action of the inner rack 51 and the transmission gear 46. Under the action of the thread and the limiting action of the guide shaft 50, the rectangular ball shell 48 and the extrusion ball 49 move downward synchronously to screen The plate 33 is extruded. When the extrusion plate 52 rotates clockwise and contacts one of the limit plates 53, the extrusion effect drives the mounting plate 32 to rotate synchronously clockwise. At this time, the mounting plate 32 drives the extrusion ball 49 to rotate synchronously. The extrusion effect of the extrusion ball 49 and multiple triangular extrusion blocks 41 and the elastic reset effect of multiple second compression springs 36 can drive the screen plate 33 to reciprocate and rise and fall vibration. Automatic vibration can be achieved without an additional power source, thereby improving the screening rate. In addition, the uniform spreading of the two-way discharge pipe 18 can effectively prevent the starch raw materials from accumulating on the top of the screen plate 33.

[0036] When the cam 54 rotates clockwise, it can squeeze one of the U-shaped plates 43, causing the U-shaped plate 43 to move horizontally. When it moves horizontally, it drives the matching rack to move synchronously and engage with the two rotating gears 55, thereby driving the two second screw guide sleeves 56 to rotate. Through the action of the thread, the two second screws 57 move downward, driving the smoothing scraper 42 to move downward synchronously, and leveling the starch raw material that falls on the top of the screen plate 33, further improving the screening rate.

[0037] When the screening work is completed, the drive motor 25 is started to rotate its output shaft clockwise, thereby driving the lower rotating tube 22, the rotating rod 31, the fixing sleeve 44, the squeezing plate 52, and the cam 54 to rotate counterclockwise synchronously. When the squeezing plate 52 rotates counterclockwise, the annular inner rack 51 is driven to rotate synchronously, thereby driving the squeezing ball 49 to move upward and reset, thereby preventing the mounting plate 32 from getting stuck during the rotation process; during the counterclockwise rotation of the cam 54, the squeezing of one of the U-shaped plates 43 is first released, thereby driving the smoothing scraper 42 to reset under the elastic action of the third compression spring 59, and when the cam 54 continues to rotate counterclockwise, it squeezes the other U-shaped plate 43, thereby driving the U-shaped plate 43 to rotate upward and reset through the above steps. The mounting plate 60 moves downward, so that the small bevel gear 63 meshes with the large bevel gear 40, and the cleaning roller brush 61 contacts the surface of the sieve plate 33. When the extrusion plate 52 contacts the other limit plate 53, the extrusion action drives the mounting plate 32 to rotate counterclockwise synchronously. At this time, the meshing action of the small bevel gear 63 and the large bevel gear 40 can drive the cleaning shaft 62 and the cleaning roller brush 61 to rotate, and the large particles of foreign matter are swept into the collection box 65. Finally, the side cover is opened and the T-shaped slider 64 is pulled out, so that the collection box 65 can be removed for centralized cleaning. In this way, the functions of accelerated screening and cleaning the sieve plate 33 are respectively realized through the clockwise and counterclockwise rotation of the mounting plate 32. The operation is simple and the use effect is good.

[0038] The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A maltodextrin refining device, comprising a screening barrel (1), characterized in that: A feeding mechanism is provided on the top of the screening barrel (1), and the feeding mechanism comprises a feeding hopper (2) and a bidirectional discharge pipe (18). The feeding hopper (2) is fixedly provided on the top of the screening barrel (1), and a hopper cover (3) is movably installed on the feeding hopper (2). The bidirectional discharge pipe (18) is rotatably installed in the screening barrel (1), and the bidirectional discharge pipe (18) is connected to the feeding hopper (2) via a rotating assembly, and the rotating assembly is used to drive the bidirectional discharge pipe (18) to realize a variable speed rotation function. A sieve plate (33) is provided in the screening barrel (1), and the sieve plate (33) is movably installed in the screening barrel (1). A smoothing and cleaning mechanism is provided in the screening barrel (1), and the smoothing and cleaning mechanism comprises a rotating rod (31) and a mounting plate (32). The rotating rod (31) The top end is fixedly mounted on the bottom of the bidirectional discharge pipe (18), the bottom end of the rotating rod (31) extends into the mounting plate (32) and is movably connected to the mounting plate (32), the mounting plate (32) and the screen plate (33) are jointly provided with a vibration component, the vibration component is controlled by the rotation of the rotating rod (31), and the vibration component is used to drive the screen plate (33) to move up and down, a smoothing scraper (42) and a U-shaped mounting plate (60) are slidably mounted in the mounting plate (32), a cleaning roller brush (61) is rotatably mounted in the U-shaped mounting plate (60), the smoothing scraper (42) and the cleaning roller brush (61) are symmetrically arranged, and the smoothing scraper (42) and the U-shaped mounting plate (60) are lifted and lowered by the clockwise and counterclockwise rotation of the bidirectional discharge pipe (18).

2. A maltodextrin refining device according to claim 1, characterized in that: The feeding mechanism further comprises a mounting shaft (8), a U-shaped lifting groove is provided at the top of the feeding hopper (2), mounting holes are provided on the inner walls of the sides of the U-shaped lifting groove which are close to each other, the mounting shaft (8) is rotatably mounted in the two mounting holes, the hopper cover (3) is fixedly sleeved on the outer wall of the peripheral side of the mounting shaft (8), two first limiting shafts (5) are fixedly mounted on the opposite inner walls of the U-shaped lifting groove, a rectangular lifting plate (4) is slidably mounted on the two first limiting shafts (5), the outer walls of the peripheral sides of the two first limiting shafts (5) are sleeved with first compression springs (6), two lifting racks (7) are fixedly mounted on the top of the rectangular lifting plate (4), two flip gears (9) are fixedly sleeved on the outer wall of the peripheral side of the mounting shaft (8), and the two lifting racks (7) are respectively meshed with the two flip gears (9).

3. A maltodextrin refining device according to claim 2, characterized in that: The feeding mechanism further comprises a lifting shaft (12), two fixed shaft sleeves (11) are fixedly mounted on the peripheral outer wall of the screening barrel (1), the lifting shaft (12) is slidably mounted in the two fixed shaft sleeves (11), an upper connecting rod (10) is rotatably mounted on the top end of the lifting shaft (12), a connecting hole is provided on the side inner wall of the U-shaped lifting groove, the other end of the upper connecting rod (10) extends into the connecting hole and is rotatably connected to the side of the rectangular lifting plate (4), and four supporting legs are arranged at the bottom end of the screening barrel (1), each supporting leg being rotatably mounted on the top end of the screening barrel (1). A fixing plate (15) is installed on the two matching supporting legs, and a square hole is opened on the side of the two fixing plates (15). A square extrusion rod (14) is slidably installed in the two square holes. A lower connecting rod (13) is rotatably installed on one end of the square extrusion rod (14), and the other end of the lower connecting rod (13) is rotatably installed on the bottom end of the lifting shaft (12). A kick plate (17) is fixedly installed on the other end of the square extrusion rod (14), and a return spring (16) is sleeved on the outer wall of the peripheral side of the square extrusion rod (14).

4. A maltodextrin refining device according to claim 1, characterized in that: The rotating assembly comprises an upper fixed tube (19) and a lower rotating tube (22); a transmission cavity is provided in the screening barrel (1); through holes are provided on opposite inner walls of the transmission cavity; the upper fixed tube (19) is fixedly arranged on the inner wall of the circumference of the through hole located above; the top end of the upper fixed tube (19) is connected to the inner wall of the bottom of the feed hopper (2); the lower rotating tube (22) is rotatably mounted on the inner wall of the circumference of the through hole located below; the inner wall of the circumference of the top end of the lower rotating tube (22) is rotatably connected to the outer wall of the circumference of the bottom end of the upper fixed tube (19). The two-way discharge pipe (18) is dynamically connected, a circular hole is opened on the top inner wall of the two-way discharge pipe (18), the bottom end of the lower rotating tube (22) extends into the screening barrel (1) and is fixedly connected to the circumferential inner wall of the circular hole, a large gear (21) is fixedly sleeved on the circumferential outer wall of the lower rotating tube (22), a driving motor (25) is fixedly installed on the top of the screening barrel (1), the output shaft of the driving motor (25) extends into the transmission cavity and is fixedly sleeved with an incomplete gear (26), and the incomplete gear (26) is meshed and installed with the large gear (21).

5. A maltodextrin refining device according to claim 4, characterized in that: The rotating assembly further comprises a rotating shaft (29), the two ends of which are rotatably mounted on opposite inner walls of the transmission chamber, a pinion gear (30) is fixedly sleeved on the peripheral outer wall of the rotating shaft (29), and the pinion gear (30) is meshingly mounted with the incomplete gear (26), a large sprocket (23) and a small sprocket (28) are respectively fixedly sleeved on the peripheral outer wall of the lower rotating tube (22) and the rotating shaft (29), and a chain (24) is meshingly mounted on the large sprocket (23) and the small sprocket (28), and an anti-blocking auger (20) is fixedly mounted on the bottom inner wall of the bidirectional discharge pipe (18), and the top end of the anti-blocking auger (20) passes through the lower rotating tube (22) and the upper fixed tube (19) and extends into the feed hopper (2).

6. A maltodextrin refining device according to claim 1, characterized in that: Four square plates (34) are fixedly mounted on the inner wall of the circumference of the screening barrel (1). The four square plates (34) are fixedly mounted on the inner wall of the circumference of the screening barrel (1). A second limiting shaft (35) is fixedly mounted on the top of the four square plates (34). The screening plate (33) is slidably mounted on the four second limiting shafts (35). The outer walls of the circumference of the four second limiting shafts (35) are sleeved with second compression springs (36). An annular limiting groove (38) is provided on the inner wall of the circumference of the screening barrel (1). Two arc-shaped limiting blocks (37) are slidably mounted in the annular limiting groove (38). Both sides of the mounting plate (32) are of arc-shaped design. The inner walls of the circumference of the two arc-shaped limiting blocks (37) are fixedly connected to the outer wall of the circumference of the mounting plate (32).

7. A maltodextrin refining device according to claim 1, characterized in that: The vibration assembly comprises a plurality of triangular extrusion blocks (41) and extrusion balls (49). The plurality of triangular extrusion blocks (41) are fixedly mounted on the top of the sieve plate (33). The plurality of triangular extrusion blocks (41) are distributed in a circular shape. A circular cavity is provided in the mounting plate (32). The bottom end of the rotating rod (31) passes through the mounting plate (32) and is rotatably mounted on the bottom inner wall of the circular cavity. A fixing sleeve (44) is fixedly sleeved on the peripheral outer wall of the mounting plate (32). An extrusion plate (52) is fixedly mounted on the peripheral outer wall of the fixing sleeve (44). Two limiting plates (53) are fixedly mounted on the peripheral inner wall of the circular cavity. The two limiting plates (53) are symmetrically arranged and are both adapted to the extrusion plate (52). An annular inner rack (51) is fixedly mounted on the bottom of the extrusion plate (52). ), a first rotating hole is formed in the inner wall of the bottom end of the circular cavity, a first screw guide sleeve (45) is rotatably mounted in the first rotating hole, a transmission gear (46) is fixedly sleeved on the outer wall of the peripheral side of the first screw guide sleeve (45), the transmission gear (46) is meshed and mounted with the annular inner rack (51), a first screw (47) is internally threadedly mounted on the first screw guide sleeve (45), a rectangular ball shell (48) is fixedly mounted on the bottom end of the first screw (47), the extrusion ball (49) is movably arranged in the rectangular ball shell (48) and corresponds to the positions of the plurality of triangular extrusion blocks (41), a guide hole is formed in the inner wall of the bottom end of the circular cavity, a guide shaft (50) is slidably mounted in the guide hole, and the bottom end of the guide shaft (50) is fixedly connected to the top of the rectangular ball shell (48).

8. A maltodextrin refining device according to claim 7, characterized in that: The bottom of the mounting plate (32) is provided with two receiving grooves, the smoothing scraper (42) and the U-shaped mounting plate (60) are slidably mounted in the two receiving grooves respectively, the circumferential inner wall of the circular cavity is provided with two transmission grooves, the bottom inner wall of each transmission groove is provided with two second rotating holes, a second screw guide sleeve (56) is rotatably mounted in each second rotating hole, each of the two matching second screw guide sleeves (56) is connected to the rotating rod (31) through an extrusion assembly, four second screw guide sleeves (56) are threadedly mounted with a second screw (57), and the bottom ends of the four second screws (57) are respectively fixedly connected to the top of the smoothing scraper (42) and the top of the U-shaped mounting plate (60).

9. A maltodextrin refining device according to claim 8, characterized in that: The extrusion assembly comprises a cam (54) and a U-shaped plate (43). The cam (54) is fixedly sleeved on the rotating rod (31). A third limiting shaft (58) is fixedly mounted on the inner wall of the side of the transmission groove. A limiting hole is provided on the inner wall of one side of the U-shaped plate (43). The third limiting shaft (58) is slidably mounted in the limiting hole. A third compression spring (59) is sleeved on the outer wall of the circumference of the third limiting shaft (58). A rotating gear (55) is fixedly sleeved on the outer walls of the circumference of the two second screw guide sleeves (56). A matching rack is fixedly mounted on the inner wall of the side of the U-shaped plate (43). The matching rack is meshed with the two rotating gears (55).

10. A maltodextrin refining device according to claim 1, characterized in that: A connecting hole is formed on the inner wall of one side of the U-shaped mounting plate (60); a cleaning shaft (62) is rotatably mounted on the inner wall of the other side of the U-shaped mounting plate (60); the other end of the cleaning shaft (62) extends out of the connecting hole and is fixedly sleeved with a small bevel gear (63); the cleaning roller brush (61) is fixedly sleeved on the cleaning shaft (62); an annular protective plate (39) is fixedly mounted on the top of the sieve plate (33); a large bevel gear (63) is fixedly sleeved on the outer wall of the circumference of the annular protective plate (39); gear (40), the bottom of the mounting plate (32) and the bottom of the U-shaped plate (43) are jointly provided with a T-shaped groove, a T-shaped slider (64) is slidably installed in the T-shaped groove, a collecting box (65) is fixedly installed at the bottom of the T-shaped slider (64), the collecting box (65) is adapted to the cleaning roller brush (61), and an arc-shaped hole is provided on the peripheral outer wall of the screening barrel (1), a side cover is hingedly installed in the arc-shaped hole, and the position of the side cover corresponds to the collecting box (65).

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