Corn flour processing and screening device

Abstract

The utility model relates to corn flour processing technical field, concretely, corn flour processing screening device, including feed assembly and the screening assembly that feed assembly bottom is equipped with, feed assembly includes the first feed inlet that the first rotary motor bottom and the inside opposite place of overflow bin are equipped with the pivot, the spiral blade that the outer ring of pivot is equipped with, and the outer ring of pivot is equipped with a plurality of stirring rod groups from top to bottom equal interval, and one side of overflow pipe is equipped with electric push rod, and the bottom cover that first discharge port bottom front -back symmetry is equipped with, through setting up feed assembly realizes the corn flour that first feed inlet entered to guide to the first discharge port of overflow pipe, reduces the condition of accumulation in the inside of overflow bin, and stirring rod group carries out the stirring to the corn flour in the inside of overflow bin, reduces the situation that corn flour local agglomerates, sets up electric push rod and bottom cover and is convenient for the corn flour in the overflow pipe carries out interval unloading, avoids the situation that corn flour is accumulated in the inside of screen frame because of the continuous falling.

Description

Technical Field

[0001] This utility model relates to the field of corn flour processing technology, specifically to a corn flour processing screening device. Background Technology

[0002] Corn flour, as an important grain processing product, is widely used in the food industry, feed production, chemical raw materials and other fields. Screening corn flour facilitates the centralized collection of corn flour of various finenesses, and the sorted corn flour is transported to the corresponding required sites. The screening process increases the number of subsequent use sites for corn flour. However, when corn flour is transported into the screening machine through pipelines, it is prone to clumping inside the pipelines. The clumped corn flour cannot be dispersed when it enters the screen. A large amount of corn flour continuously falls from the top of the screen, which can easily lead to excessive accumulation of corn flour on the screen surface. The lower layer of corn flour is compacted by the upper layer of corn flour, and the upper layer of corn flour cannot contact the screen surface. Moreover, the screen frame cannot be disassembled during grading and screening, and it is inconvenient to clean the screen inside the screen frame after screening stops, which affects the screening effect during use. Utility Model Content

[0003] The purpose of this invention is to provide a corn flour processing and screening device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A corn flour processing and screening device includes a feeding assembly and a screening assembly located at the bottom of the feeding assembly. The feeding assembly includes a material hopper and a first inlet on one side of the top of the material hopper. A first rotary motor is located at the top of the material hopper. A rotating shaft is located at the bottom of the first rotary motor opposite to the inside of the material hopper. Spiral blades are located on the outer ring of the rotating shaft, and a plurality of stirring rods are evenly spaced from top to bottom on the outer ring of the rotating shaft. A material conveying pipe is located at the bottom of the material hopper, and a first outlet is located at the bottom of the material conveying pipe. An electric push rod is located on one side of the material conveying pipe, and an L-shaped rod is located at the bottom of the electric push rod. A moving block is located on one side of the bottom of the L-shaped rod corresponding to the material conveying pipe. A bottom cover is symmetrically located at the bottom of the first outlet. The screening assembly includes a working box and a second rotary motor located in the middle of the bottom of the working box. The front end and the right end of the working box are respectively provided with a first box door and a second box door. The working box is equipped with a vibrating frame. The vibrating frame is provided with an upper frame, a middle frame and a lower frame from top to bottom. The upper frame, the middle frame and the lower frame are all provided with a screen frame in the middle. The top and the right side of the screen frame are respectively provided with a third feed port and a second discharge port.

[0005] Preferably, the bottom of the first rotary motor and the top of the second rotary motor are both provided with couplings, the feed pipe and the feed bin are integrally formed, the first rotary motor is provided with a fixing frame, the bottom of the first rotary motor and the top of the shaft are respectively fixedly connected to the upper and lower ends of the corresponding couplings by screws, the spiral blades and the shaft are integrally formed, the horizontal area of ​​the stirring rod assembly on the outer ring of the shaft decreases from top to bottom, and the stirring rod assembly and the shaft are integrally formed.

[0006] In this invention, a coupling is provided to facilitate the continuous rotation of the output shafts of the first and second rotary motors to the rotating shaft and eccentric wheel, respectively. The first rotary motor is inserted and fixed at the corresponding position in the middle of the fixed frame, and the bottom of the fixed frame is welded and fixed to the feed bin. Turning on the first rotary motor facilitates the continuous rotation of the spiral blade and the stirring rod assembly. The sum of the lengths of the feed pipe and the feed tube is consistent with the length of the spiral blade. The shape of the spiral blade facilitates the guidance of the corn flour entering from the first feed inlet to the first discharge outlet of the feed pipe. The stirring rod assembly stirs the corn flour inside the feed bin, reducing the local agglomeration of the corn flour.

[0007] Preferably, the L-shaped rod is welded and fixed at the bottom corresponding to the electric push rod, one side of the bottom of the L-shaped rod is welded and fixed to the moving block, the bottom cover and the corresponding cylindrical block are integrally formed, and the cylindrical block is provided with a stop block at both ends. The cylindrical block is welded and fixed to the stop block through the through hole, and the two bottom covers are tightly fitted in the middle.

[0008] In this invention, a fixed seat is provided at the corresponding position of the electric push rod and the outer ring of the feed tube. The electric push rod and the feed tube are welded and fixed to the fixed seat at the corresponding positions. When the external switch of the electric push rod is turned on, the L-shaped rod moves up and down, causing the moving block to move up and down. The two symmetrical through holes on the moving block are in the shape of an inverted octagon. When the bottom cover is closed, the cylindrical block is fixed at the top of the through hole. When the L-shaped rod moves the moving block up, the cylindrical block moves along the through hole to the bottom of the through hole. A stop block is set to limit the left and right movement range of the cylindrical block. At this time, the bottom ends of the two bottom covers rotate outward, so that the corn flour in the feed tube falls in batches at intervals, avoiding the situation where the corn flour accumulates inside the screen frame due to continuous falling. The length of the third feed port is larger than the diameter of the first discharge port, so that the corn flour is discharged from the first discharge port into the screen frame.

[0009] Preferably, a second feed inlet is provided at the top of the working box corresponding to the bottom of the feed pipe, the first box door and the second box door are rotatably connected to the corresponding positions of the working box, the bottom of the working box is provided with several support columns, and the top of the coupling corresponding to the second rotary motor is provided with an eccentric wheel, the bottom of the eccentric wheel is fixedly connected to the corresponding coupling by screws, and the center of the eccentric wheel is rotatably connected to the bottom of the vibration frame.

[0010] In this utility model, the bottom of the feed hopper corresponds to the second feed inlet, and the feed hopper is welded and fixed to the working box. The bottom of the working box is welded and fixed to the support column. The surfaces of the first and second boxes are provided with handles. The first and second boxes are integrally formed with their corresponding handles. Torsion springs are provided between the first and second boxes and the working box. The torsion springs facilitate the closing of the first and second boxes with the working box. The outer ring of the second rotary motor is provided with a mounting bracket at the bottom of the working box. The second rotary motor is snapped and fixed to the mounting bracket. The top of the mounting bracket is welded and fixed to the working box. The output shaft of the second rotary motor passes through the bottom of the working box and is fixed to the corresponding coupling with screws. When the second rotary motor is turned on, it drives the eccentric wheel to rotate continuously, so that the center of mass of the eccentric wheel makes continuous circular motion. In cooperation with the rotating vibrating frame, it drives the vibrating frame to make continuous planar rotational motion.

[0011] Preferably, a spring ring is provided at the top of the vibration frame corresponding to the inner wall of the working box, and the upper and lower ends of the spring ring are welded and fixed to the corresponding positions of the working box and the top of the vibration frame, respectively.

[0012] In this invention, welding and fixing increase the overall structural stability of the working box, spring coil and vibration frame. The spring coil is elastic and can absorb and buffer the impact force generated when the vibration frame makes planar rotational motion.

[0013] Preferably, the top of the upper frame, middle frame and lower frame are symmetrically provided with protrusions, and the bottom of each screen frame is provided with a groove corresponding to the protrusion. The screen frame is provided with a connecting block near the four corners, and the surface of the connecting block is provided with a first screw hole. The surface of the vibrating frame is provided with a second screw hole corresponding to the first screw hole. The first screw hole and the second screw hole are provided with fixing screws. The bottom of the screen frame between the upper frame and the middle frame is provided with an inclined plate. The upper and lower ends of the inclined plate are respectively connected and fixed to the corresponding parts of the vibrating frame and the screen frame by screws.

[0014] In this invention, several protrusions and corresponding parts of the vibrating frame are integrally formed, with the protrusion shape matching the groove to achieve the snap-fit ​​connection between the screen frame and the vibrating frame. The connecting block is welded and fixed to the corresponding parts of the screen frame. After the screen frame and the vibrating frame are snap-fitted, several fixing screws are screwed into the corresponding first and second screw holes and tightened to achieve the connection and fixation of the three screen frames and the corresponding positions of the vibrating frame. An inclined plate is set to intercept the falling corn flour. The corn flour enters the corresponding third feed port of the bottom screen frame along the inclined surface of the inclined plate. The connection is fixed by screws and the connecting plate and fixing screws, which facilitates the quick fixation and disassembly of the screen frame from the vibrating frame. At the same time, the inclined plate, the vibrating frame, and the screen frame can be quickly connected and disassembled. After disassembly, the screen frame and the inclined plate can be taken out of the work box for cleaning.

[0015] Preferably, the upper frame, middle frame and lower frame are respectively provided with a first screen, a second screen and a third screen inside the corresponding screen frame, and each second discharge port is provided with a storage box on the bottom right side.

[0016] In this invention, the mesh density of the first, second, and third screens gradually increases according to the positions of the upper, middle, and lower frames. The first, second, and third screens are welded and fixed to their corresponding screen frames, and the first, second, and third screens are inclined with the left end higher than the right end inside their respective screen frames. Driven by a vibrating frame that continuously rotates in a plane, the corn flour screening speed is accelerated. Large corn flour particles remain inside the first screen, while medium and small corn flour particles fall along the inclined plate into the screen frame of the middle frame. Medium corn flour particles remain inside the second screen, while small corn flour particles fall along the inclined plate into the screen frame of the lower frame. Large, medium, and small corn flour particles are carried by the bottom of the first, second, and third screens to the second discharge port on the right end of the corresponding screen frame. The inertia of the inclined movement of the screens causes the large, medium, and small corn flour particles to enter their corresponding collection boxes, thus achieving graded screening and centralized collection of the corn flour.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model guides the corn flour entering through the first inlet to the first outlet of the conveying pipe by setting a feeding component, reducing the accumulation inside the conveying bin. The stirring rod assembly stirs the corn flour inside the conveying bin, reducing the local clumping of corn flour. The electric push rod and bottom cover facilitate the intermittent discharge of corn flour in the conveying pipe, avoiding continuous falling and accumulation of corn flour inside the screen frame. 2. This utility model achieves three fineness screenings of corn flour—large, medium, and small particles—by setting up a screening component. At the same time, the vibrating frame and the screen frame are connected and disassembled by fixing screws. The upper and lower ends of the inclined plate are fixedly connected to the vibrating frame and the screen frame by screws, so that the screen frame and the inclined plate can be quickly removed and cleaned after the second rotary motor is turned off, so as to avoid affecting the screening effect in the next use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the corn flour processing and screening according to this utility model; Figure 2 This is a schematic diagram showing the positional structure of the first rotary motor, rotating shaft, and spiral blades of this utility model. Figure 3 This is a schematic diagram of the positional structure of the electric push rod, L-shaped rod and bottom cover of this utility model; Figure 4 This is a schematic diagram of the upper shelf, middle shelf, and lower shelf positions of this utility model; Figure 5This is a schematic diagram showing the positions and structures of the sieve frame, the third feed inlet, and the second discharge outlet of this utility model. Figure 6 This is a schematic diagram of the position structure of the second rotary motor and the eccentric wheel of this utility model; Figure 7 This is a schematic diagram showing the position and structure of the vibration frame, protrusions, and grooves of this utility model; Figure 8 This is a schematic diagram showing the positional structure of the first, second, and third screens of this utility model.

[0019] The meanings of the labels in the diagram are as follows: 1. Feeding assembly; 10. Feeding bin; 100. First feed inlet; 101. Feeding pipe; 102. First discharge outlet; 11. First rotary motor; 12. Rotating shaft; 120. Spiral blades; 121. Stirring rod assembly; 13. Electric push rod; 130. L-shaped rod; 14. Moving block; 140. Through hole; 141. Cylindrical block; 143. Bottom cover; 2. Screening assembly; 20. Working box; 200. First box door; 201. Second box door; 202. Second feed inlet; 21. Second rotary motor; 210. Eccentric wheel; 22. Vibrating frame; 220. Protrusion; 23. Screen frame; 230. Third feed inlet; 231. Second discharge outlet; 232. Groove; 233. Connecting block; 24. Upper frame; 240. First screen; 25. Middle frame; 250. Second screen; 26. Lower frame; 260. Third screen; 27. Inclined plate; 28. Storage box. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-8 This embodiment provides a technical solution: A corn flour processing and screening device includes a feeding assembly 1 and a screening assembly 2 located at the bottom of the feeding assembly 1. The screening assembly 2 includes a working box 20 and a second rotary motor 21 located in the middle of the bottom of the working box 20. The front end and right end of the working box 20 are respectively provided with a first box door 200 and a second box door 201. A vibrating frame 22 is provided inside the working box 20. The vibrating frame 22 is provided with an upper frame 24, a middle frame 25 and a lower frame 26 from top to bottom. A screen frame 23 is provided inside the upper frame 24, the middle frame 25 and the lower frame 26. The top of the screen frame 23 is... A third feed inlet 230 and a second discharge outlet 231 are respectively opened on the outer wall surface of the right end. A second feed inlet 202 is opened at the top of the working box 20 and at the bottom of the feed pipe 101. The first box door 200 and the second box door 201 are rotatably connected to the working box 20 at the corresponding positions. Several support columns are provided at the bottom of the working box 20, and an eccentric wheel 210 is provided at the top of the coupling corresponding to the second rotary motor 21. The bottom of the eccentric wheel 210 is fixedly connected to the corresponding coupling by screws, and the center of the eccentric wheel 210 is rotatably connected to the bottom of the vibrating frame 22.

[0022] In this invention, the bottom of the feed hopper 10 corresponds to the second feed inlet 202, and the feed hopper 10 is welded and fixed to the working box 20. The bottom of the working box 20 is welded and fixed to the support column. Both the first box door 200 and the second box door 201 are provided with handles. The first box door 200 and the second box door 201 are integrally formed with their corresponding handles. A torsion spring is provided between the first box door 200, the second box door 201, and the working box 20. The torsion spring facilitates the closing of the first box door 200 and the second box door 201 with the working box 20. The box 20 is fitted together, and the outer ring of the second rotary motor 21 is provided with a mounting bracket at the bottom of the working box 20. The second rotary motor 21 is snapped and fixed to the mounting bracket. The top of the mounting bracket is welded and fixed to the working box 20. The output shaft of the second rotary motor 21 passes through the bottom of the working box 20 and is fixed to the corresponding coupling by screws. When the second rotary motor 21 is turned on, it drives the eccentric wheel 210 to rotate continuously, so that the center of mass of the eccentric wheel 210 makes a continuous circular motion. It cooperates with the rotating vibrating frame 22 to drive the vibrating frame 22 to make a continuous planar rotational motion.

[0023] Among them, a spring ring is provided at the top of the vibration frame 22 corresponding to the inner wall of the working box 20, and the upper and lower ends of the spring ring are welded and fixed to the corresponding positions of the working box 20 and the top of the vibration frame 22, respectively.

[0024] In this invention, welding and fixing increase the overall structural stability of the working box 20, the spring ring and the vibration frame 22. The spring ring is elastic and can absorb and buffer the impact force generated when the vibration frame 22 performs planar rotational motion.

[0025] Secondly, the top of the upper frame 24, the middle frame 25 and the lower frame 26 are symmetrically provided with protrusions 220. The bottom of each screen frame 23 is provided with a groove 232 corresponding to the protrusion 220. The screen frame 23 is provided with connecting blocks 233 near the four corners. The surface of the connecting blocks 233 is provided with a first screw hole. The surface of the vibrating frame 22 is provided with a second screw hole corresponding to the first screw hole. The first screw hole and the second screw hole are provided with fixing screws. The bottom of the screen frame 23 between the upper frame 24 and the middle frame 25 is provided with an inclined plate 27. The upper and lower ends of the inclined plate 27 are connected and fixed with the corresponding parts of the vibrating frame 22 and the screen frame 23 by screws.

[0026] In this utility model, several protrusions 220 and the corresponding parts of the vibrating frame 22 are integrally formed. The shape of the protrusions 220 is adapted to the grooves 232 to realize the snap-fit ​​between the screen frame 23 and the vibrating frame 22. The connecting block 233 is welded and fixed to the corresponding parts of the screen frame 23. After the screen frame 23 and the vibrating frame 22 are snap-fitted, several fixing screws are screwed into the corresponding first screw holes and second screw holes and tightened to realize the connection and fixation between the three screen frames 23 and the corresponding positions of the vibrating frame 22. The inclined plate 27 is set to intercept the falling corn flour. The corn flour enters the corresponding third feed port 230 of the bottom screen frame 23 along the inclined surface of the inclined plate 27. The connection is fixed by screws and the connecting plate and fixing screws, which facilitates the quick fixation and disassembly of the screen frame 23 from the vibrating frame 22. At the same time, the inclined plate 27 is quickly connected and disassembled with the vibrating frame 22 and the screen frame 23. After disassembly, the screen frame 23 and the inclined plate 27 can be taken out of the working box 20 for cleaning.

[0027] Specifically, the upper frame 24, the middle frame 25 and the lower frame 26 are respectively provided with a first screen 240, a second screen 250 and a third screen 260 inside the corresponding screen frame 23, and each second discharge port 231 is provided with a storage box 28 on the bottom right side.

[0028] In this invention, the mesh density of the first screen 240, the second screen 250, and the third screen 260 gradually increases according to the positions of the upper frame 24, the middle frame 25, and the lower frame 26. The first screen 240, the second screen 250, and the third screen 260 are welded and fixed to the corresponding screen frames 23, and the first screen 240, the second screen 250, and the third screen 260 are inclined inside the corresponding screen frames 23 with the left end higher than the right end. Driven by the vibrating frame 22 that continuously rotates in a planar manner, the corn flour screening speed is accelerated. Large particles of corn flour remain inside the first screen 240, while medium and small particles... Corn flour falls along the inclined plate 27 into the sieve frame 23 of the middle frame 25. Medium-sized corn flour particles remain inside the second sieve 250, while small-sized corn flour particles fall along the inclined plate 27 into the sieve frame 23 of the lower frame 26. Large, medium, and small corn flour particles are discharged from the bottom of the first sieve 240, the second sieve 250, and the third sieve 260, respectively, to the second discharge port 231 on the right side of the corresponding sieve frame 23. The inertia of the inclined movement of the sieves causes the large, medium, and small corn flour particles to enter the corresponding collection box 28, thus achieving the grading, screening, and centralized collection of corn flour.

[0029] In addition, the feeding assembly 1 includes a feeding bin 10 and a first feeding port 100 opened on one side of the top of the feeding bin 10. A first rotary motor 11 is provided on the top of the feeding bin 10. A rotating shaft 12 is provided at the bottom of the first rotary motor 11 opposite to the inside of the feeding bin 10. A spiral blade 120 is provided on the outer ring of the rotating shaft 12, and a plurality of stirring rods 121 are provided at equal intervals from top to bottom on the outer ring of the rotating shaft 12. A feeding pipe 101 is provided at the bottom of the feeding bin. A first discharge port 102 is opened at the bottom of the feeding pipe 101. An electric push rod 13 is provided on one side of the feeding pipe 101, and an L-shaped rod 130 is provided at the bottom of the electric push rod 13. One side of the bottom end of the L-shaped rod 130 is connected to the feeding pipe 101. A movable block 14 is provided at the corresponding position of the pipe 101. The bottom cover 143 is symmetrically provided at the bottom of the first discharge port 102. The bottom of the first rotary motor 11 and the top of the second rotary motor 21 are both provided with couplings. The feed pipe 101 and the feed bin 10 are integrally formed. The first rotary motor 11 is provided with a fixed frame. The bottom of the first rotary motor 11 and the top of the rotating shaft 12 are respectively fixedly connected to the upper and lower ends of the corresponding couplings by screws. The spiral blade 120 and the rotating shaft 12 are integrally formed. The horizontal area of ​​the stirring rod assembly 121 on the outer ring of the rotating shaft 12 decreases from top to bottom. The stirring rod assembly 121 and the rotating shaft 12 are integrally formed.

[0030] In this invention, a coupling is provided to facilitate the continuous rotation of the output shafts of the first rotary motor 11 and the second rotary motor 21 to the rotating shaft 12 and the eccentric wheel 210, respectively. The first rotary motor 11 is inserted and fixed at the corresponding position in the middle of the fixed frame, and the bottom of the fixed frame is welded and fixed to the feed bin 10. Turning on the first rotary motor 11 facilitates the continuous rotation of the spiral blade 120 and the stirring rod assembly 121. The sum of the lengths of the feed pipe 101 and the feed pipe 101 is consistent with the length of the spiral blade 120. The shape of the spiral blade 120 facilitates the guidance of the corn flour entering through the first feed inlet 100 to the first discharge outlet 102 of the feed pipe 101. The stirring rod assembly 121 stirs the corn flour inside the feed bin 10, reducing the local agglomeration of the corn flour.

[0031] It is worth noting that the L-shaped rod 130 is welded and fixed to the bottom of the electric push rod 13 at the corresponding position. The bottom side of the L-shaped rod 130 is welded and fixed to the moving block 14. The bottom cover 143 and the corresponding cylindrical block 141 are integrally formed. Both ends of the cylindrical block 141 are provided with stops. The cylindrical block 141 is welded and fixed to the stop through the through hole 140. The two bottom covers 143 fit tightly in the middle.

[0032] In this utility model, a fixed seat is provided at the corresponding position of the electric push rod 13 and the outer ring of the feed tube 101. The electric push rod 13 and the feed tube 101 are welded and fixed to the fixed seat at the corresponding positions. Turning on the external switch of the electric push rod 13 drives the L-shaped rod 130 to move up and down, causing the moving block 14 to move up and down. The two symmetrical through holes 140 on the moving block 14 are in the shape of an inverted octagon. When the bottom cover 143 is closed, the cylindrical block 141 is fixed at the top of the through hole 140. When the L-shaped rod 130 drives the moving block 14... The upward movement causes the cylindrical block 141 to move along the through hole 140 to the bottom of the through hole 140. A stop is set to limit the left and right movement range of the cylindrical block 141. At this time, the bottom ends of the two bottom covers 143 rotate outward, so that the corn flour in the feed pipe 101 falls in batches at intervals, avoiding the situation where the corn flour accumulates inside the screen frame 23 due to continuous falling. The length of the third feed port 230 is larger than the diameter of the first discharge port 102, so that the corn flour is fed from the first discharge port 102 into the screen frame 23.

[0033] In this embodiment of the corn flour processing and screening device, when in use, a fixed frame is welded to the top of the feed bin 10 with a first feed inlet 100 and a feed pipe 101. A first rotary motor 11 with a coupling is clamped and fixed to the fixed frame. A rotating shaft 12 with a spiral blade 120 and a stirring rod assembly 121 is placed in the middle of the feed bin 10, and the top of the rotating shaft 12 is fixedly connected to the bottom of the coupling by screws. A fixed seat with an electric push rod 13 is welded to the outer ring of the feed pipe 101 near the top. The bottom of the electric push rod 13 is welded and fixed to an L-shaped rod 130 with a moving block 14. Through holes 140 are symmetrically opened on the surface of the moving block 14. Two cylindrical blocks 141 with bottom covers 143 pass through the through holes 140. The two ends of the cylindrical blocks 141 are welded and fixed to the baffles. The bottom of the feed bin 10 is welded and fixed to the second feed inlet 202 at the top of the working box 20. The bottom of the work box 20 with the mounting bracket is welded and fixed to several support columns. The second rotary motor 21 is snapped and fixed to the mounting bracket. The output shaft of the second rotary motor 21 passes through the bottom of the work box 20 and is connected and fixed to the corresponding coupling by screws. The eccentric wheel 210 is fixed to the top of the coupling by screws. The eccentric wheel 210 is rotatably connected to the bottom of the vibrating frame 22 with spring rings and several protrusions 220 at the corresponding position. The top of the spring rings is welded and fixed to the inner wall of the work box 20. The first screen 240, the second screen 250 and the third screen 260 are welded to the inside of the three screen frames 23 with the third feed port 230 and the second discharge port 231, respectively. The vibrating frame 22 is divided into an upper frame 24, a middle frame 25 and a lower frame 26 from top to bottom. The grooves 232 at the bottom of the screen frames 23 of the screen 240, the second screen 250 and the third screen 260 are engaged with the protrusions 220 on the upper frame 24, the middle frame 25 and the lower frame 26. The connecting block 233 with several first screw holes is welded and fixed to the screen frame 23. The second screw hole is opened at the bottom of the vibrating frame 22 corresponding to the first screw hole. Several fixing screws are screwed into the corresponding first screw hole and second screw hole and tightened. At this time, the three screen frames 23 are fixedly connected to the vibrating frame 22 at the corresponding positions. The storage box 28 is placed at the right end of the screen frame 23. The first box door 200 and the second box door 201 with handles are respectively placed at the front end of the vibrating frame 22 and the right end of the storage box 28. The first box door 200 and the second box door 201 are rotatably connected to the work box 20 at the corresponding positions. After installation, connect the first feed inlet 100 to the discharge outlet of the previous process, and start the control switches of the first rotary motor 11, electric push rod 13, and second rotary motor 21. Corn flour enters the feed hopper 10 from the first feed inlet 100 and is guided by the spiral blades 120 into the feed pipe 101. At the same time, the stirring rod assembly 121 stirs the corn flour to reduce local clumping. The electric push rod 13 drives the L-shaped rod 130 to move up and down, causing the bottom cover 143 to open and close intermittently. The corn flour inside the feed pipe 101 falls intermittently into the screen frame 23 of the upper frame 24. At this time, the three screen frames 23 and the vibrating frame 22 perform continuous circular motion. Large corn flour particles remain inside the first screen 240, medium and small corn flour particles fall along the inclined plate 27 into the screen frame 23 of the middle frame 25, medium corn flour particles remain inside the second screen 250, and small corn flour particles fall along the inclined plate 27 into the lower frame 26. Inside the sieve frame 23, large, medium, and small corn flour particles are fed to the second discharge port 231 on the right side of the corresponding sieve frame 23 by the bottom of the first sieve 240, the second sieve 250, and the third sieve 260, respectively. The inertia of the tilting movement of the sieves causes the large, medium, and small corn flour particles to enter the corresponding collection boxes 28, thus achieving the grading, screening, and centralized collection of the corn flour. After the corn flour screening is completed, the control switches of the first rotary motor 11, the electric push rod 13, and the second rotary motor 21 are turned off, and the second box door 201 is opened to move the collection box to the next processing point of the corn flour. Then, the first box door 200 is opened to separate the sieve frame 23 and the inclined plate 27 from the vibrating frame 22 for cleaning. After cleaning, the inclined plate 27 and the sieve frame 23 are reinstalled on the vibrating frame 22, and the empty collection box 28 is placed back into the corresponding position inside the working box 20. The first box door 200 and the second box door 201 are then closed.

Claims

1. A corn flour processing and screening device, comprising a feeding assembly (1) and a screening assembly (2) disposed at the bottom of the feeding assembly (1), characterized in that: The feeding assembly (1) includes a feeding bin (10) and a first feeding port (100) opened on one side of the top of the feeding bin (10). The top of the feeding bin (10) is provided with a first rotary motor (11). The bottom of the first rotary motor (11) is provided with a rotating shaft (12) opposite to the inside of the feeding bin (10). The outer ring of the rotating shaft (12) is provided with spiral blades (120), and the outer ring of the rotating shaft (12) is provided with a plurality of stirring rod groups (121) at equal intervals from top to bottom. The bottom of the feeding bin is provided with a feeding pipe (101). The bottom of the feeding pipe (101) is provided with a first discharge port (102). The side of the feeding pipe (101) is provided with an electric push rod (13), and the bottom of the electric push rod (13) is provided with an L-shaped rod (130). The bottom side of the L-shaped rod (130) is provided with a moving block (14) corresponding to the feeding pipe (101). The bottom of the first discharge port (102) is symmetrically provided with a bottom cover (143). The screening assembly (2) includes a working box (20) and a second rotary motor (21) located in the middle of the bottom of the working box (20). The front end and the right end of the working box (20) are respectively provided with a first box door (200) and a second box door (201). The working box (20) is provided with a vibrating frame (22) inside. The vibrating frame (22) is provided with an upper frame (24), a middle frame (25) and a lower frame (26) from top to bottom. The upper frame (24), the middle frame (25) and the lower frame (26) are all provided with a screen frame (23) in the middle. The top and the right side of the screen frame (23) are respectively provided with a third feed port (230) and a second discharge port (231).

2. The corn flour processing and screening device according to claim 1, characterized in that: The bottom of the first rotary motor (11) and the top of the second rotary motor (21) are both equipped with couplings. The feed pipe (101) and the feed bin (10) are integrally formed. The first rotary motor (11) is equipped with a fixed frame. The bottom of the first rotary motor (11) and the top of the shaft (12) are respectively fixedly connected to the upper and lower ends of the corresponding couplings by screws. The spiral blade (120) and the shaft (12) are integrally formed. The horizontal area of ​​the stirring rod assembly (121) on the outer ring of the shaft (12) decreases from top to bottom. The stirring rod assembly (121) and the shaft (12) are integrally formed.

3. The corn flour processing and screening device according to claim 1, characterized in that: The L-shaped rod (130) is welded and fixed to the bottom of the electric push rod (13). The bottom side of the L-shaped rod (130) is welded and fixed to the moving block (14). The bottom cover (143) and the corresponding cylindrical block (141) are integrally formed. Both ends of the cylindrical block (141) are provided with blocks. The cylindrical block (141) is welded and fixed to the block through the through hole (140). The two bottom covers (143) are tightly fitted together in the middle.

4. The corn flour processing and screening device according to claim 1, characterized in that: The top of the working box (20) and the bottom of the feed pipe (101) are respectively provided with a second feed port (202). The first box door (200) and the second box door (201) are respectively rotatably connected to the working box (20). The bottom of the working box (20) is provided with several support columns, and the top of the coupling of the second rotary motor (21) is provided with an eccentric wheel (210). The bottom of the eccentric wheel (210) is fixedly connected to the corresponding coupling by screws. The center of the eccentric wheel (210) is rotatably connected to the bottom of the vibrating frame (22).

5. The corn flour processing and screening device according to claim 1, characterized in that: The top of the vibration frame (22) is provided with a spring ring corresponding to the inner wall of the work box (20), and the upper and lower ends of the spring ring are welded and fixed to the corresponding positions of the work box (20) and the top of the vibration frame (22), respectively.

6. The corn flour processing and screening device according to claim 1, characterized in that: The top of the upper frame (24), middle frame (25) and lower frame (26) are symmetrically provided with protrusions (220). The bottom of each screen frame (23) is provided with a groove (232) corresponding to the protrusion (220). The screen frame (23) is provided with connecting blocks (233) near the four corners. The surface of the connecting blocks (233) is provided with a first screw hole. The surface of the vibrating frame (22) is provided with a second screw hole corresponding to the first screw hole. The first screw hole and the second screw hole are provided with fixing screws. The bottom of the screen frame (23) between the upper frame (24) and the middle frame (25) is provided with an inclined plate (27). The upper and lower ends of the inclined plate (27) are respectively connected and fixed with the corresponding positions of the vibrating frame (22) and the screen frame (23) by screws.

7. The corn flour processing and screening device according to claim 1, characterized in that: The upper frame (24), middle frame (25) and lower frame (26) are respectively provided with a first screen (240), a second screen (250) and a third screen (260) inside the corresponding screen frame (23), and each second discharge port (231) is provided with a storage box (28) on the bottom right side.

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