Multi-stage vibration type coarse grain grading and screening machine

Abstract

This utility model relates to the field of screening machines, and more particularly to a multi-stage vibrating grain grading and screening machine, including a fixed box; both sides of the fixed box are provided with first grooves, the first grooves extending through the upper end of the fixed box. This utility model involves feeding grains into the feed hopper, activating the second vibration mechanism to initially vibrate the grains, breaking up any agglomerated grain particles and distributing them more evenly as they enter the upper slide. The grains fall into the upper slide, and the vibrating block is activated to vibrate the upper slide. Small grain particles fall into the lower slide through the separation trough. Activating the blower generates upward airflow, and activating the heating mechanism allows hot air to enter the lower slide through the ventilation mechanism, drying the grains. Activating the first vibration mechanism vibrates the small grain particles in the lower slide, allowing them to slide more smoothly downwards and preventing blockages caused by particle accumulation or excessive friction.

Description

Technical Field

[0001] This utility model belongs to the field of screening machines, specifically relating to a multi-stage vibrating grain grading and screening machine. Background Technology

[0002] Coarse grains (such as corn, wheat, beans, cereals, etc.) vary significantly in particle size, shape, density, and surface characteristics, and therefore require efficient grading and screening during processing to ensure product quality.

[0003] Currently, traditional single-layer or double-layer vibrating screens are unable to achieve loosening and rapid separation of grains of different sizes through multi-stage vibration when screening grains of different sizes. They are also prone to clogging during screening and are inconvenient for ventilating and drying grains. Further improvements are needed. Utility Model Content

[0004] To overcome the problems of traditional single-layer or double-layer vibrating screens, which are difficult to loosen and quickly separate grains of different sizes through multi-stage vibration, and which are difficult to avoid clogging during grain screening and are inconvenient for ventilation and drying, a multi-stage vibrating grain grading and screening machine is proposed.

[0005] The technical solution of this utility model is as follows: a multi-stage vibrating grain grading and screening machine, including a fixed box; a first trough is provided through both sides of the fixed box, the first trough is provided through the upper end of the fixed box, a heating mechanism is provided on the inner wall of the first trough, an inclined lower slide and an upper slide are fixedly connected through the left end of the fixed box, the upper slide is located above the lower slide, a uniformly distributed separation groove is provided through the lower end of the upper slide, a plurality of vibrating blocks are fixedly connected to the lower end of the upper slide, a blower is fixedly connected to the bottom surface of the inner wall of the fixed box, a ventilation mechanism for ventilation inside the lower slide is provided at the right end of the first trough, a first vibration mechanism is provided on the lower slide, and a second vibration mechanism is provided in the feed hopper;

[0006] The inner wall of the fixed frame is provided with a blocking mechanism, which includes an electric cylinder and a stop block; electric cylinders are fixedly connected to both the left and right ends of the inner wall of the fixed frame, and a stop block is fixedly connected to the lower end of the output shaft of the electric cylinder.

[0007] Furthermore, the heating mechanism includes an electric heating rod, a first sleeve block, ventilation slots, and heat-conducting plates; an electric heating rod is placed on the bottom surface of the inner wall of the first slot, and the first sleeve block is fitted on the side wall of the electric heating rod. The side wall of the first sleeve block is in contact with the inner wall of the fixed box. Two ventilation slots are opened through the upper end of the first sleeve block, and heat-conducting plates are fixedly attached to the left and right ends of the inner wall of the ventilation slots.

[0008] Furthermore, the ventilation mechanism includes an air outlet, an air duct, and a wire mesh; an air outlet is provided in the middle of the right end of the fixed box, the air outlet is located above the heating mechanism, an air duct is fixedly connected to the right end of the fixed box, an air inlet is provided through the lower end of the sliding track, the lower end of the air inlet and the right end of the fixed box are both fixedly connected to the air duct, and a wire mesh is fixedly connected to the upper part of the inner wall of the air duct.

[0009] Furthermore, the first vibration mechanism includes a second groove, limiting posts, a second sleeve block, a vibrator, a first air supply hole, and a second air supply hole; the lower end of the sliding track is provided with a second groove, two limiting posts are fixedly connected to both sides of the inner wall of the second groove, the side walls of the two limiting posts are fitted with a second sleeve block, the lower end of the second sleeve block is fixedly connected with a vibrator, and the upper end of the sliding track is provided with multiple first air supply holes and second air supply holes, the first air supply hole is located to the right of the second sleeve block, and the second air supply hole is located to the left of the second sleeve block.

[0010] Furthermore, the second vibration mechanism includes a fixed column, a sleeve, an arc plate, and a vibrating rod; two fixed columns are fixedly connected to one side of the inner wall of the feed hopper, a sleeve is fitted on the side wall of the fixed column, an arc plate is fixedly connected between the two sleeves, a vibrating rod is fixedly connected to the lower end of the arc plate, and there is a gap between the side wall of the sleeve and the inner wall of the feed hopper.

[0011] Furthermore, a sealing plate is hinged to the right end of the slide, and a handle is fixed to the right end of the sealing plate. A magnetic strip is fixed to the upper right edge of the slide, and the right end of the magnetic strip is attached to the left end of the sealing plate. The sealing plate is made of iron.

[0012] Furthermore, a second discharge body is fixed to the left end of the upper slide, and a first discharge body is fixed to the left end of the lower slide. A first collection box and a second collection box are placed to the left of the fixed box. The first collection box is located below the first discharge body, and the second collection box is located below the second discharge body. The lower ends of the second discharge body and the first discharge body are connected.

[0013] Furthermore, inserts are fixed to both sides of the lower end of the fixed frame. The left and right ends of the inserts are respectively attached to the left and right end faces of the inner wall of the first groove, and the lower end of the inserts is attached to the upper end of the electric heating rod.

[0014] Furthermore, limit baffles are fixed to the upper parts of both sides of the fixed box, with the ends of the two limit baffles that are close to each other and the ends of the two inserts that are far apart from each other fitting together.

[0015] The beneficial effects of this utility model are:

[0016] 1. By placing the fixed frame on the top of the fixed box, the grains are put into the inside of the feed hopper. The second vibration mechanism can initially vibrate the grains. The vibration process can break up the agglomerated grain particles, making them more evenly distributed when entering the upper slide. The grains fall into the inside of the upper slide. The vibration block is turned on to vibrate the upper slide. Small grain particles will fall into the inside of the lower slide through the separation trough. The blower is turned on to generate upward air force. The heating mechanism is turned on, and hot air will enter the lower slide through the ventilation mechanism to dry the grains. The first vibration mechanism can vibrate the small grain particles in the lower slide. The vibration makes the small grain particles slide down more smoothly, avoiding blockage caused by particle accumulation or excessive friction. This solves the problem that traditional single-layer or double-layer vibrating screens are difficult to loosen and quickly separate grains of different sizes through multi-stage vibration when screening grains of different sizes. It is difficult to avoid blockage during screening and it is inconvenient to ventilate and dry the grains.

[0017] 2. The electric cylinder drives the baffle to move up and down, which can adjust the speed and flow of grains entering the upper slide. When the vibrating block is turned on to vibrate the upper slide, the baffle of the blocking mechanism can briefly retain the material, prolong the vibration time, improve the vibration effect, and help shake off some dust. The dust falls into the upper slide and is then blown out from the left end of the upper slide by the flowing hot air, thus removing the dust from the grains. Attached Figure Description

[0018] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0019] Figure 2 The diagram shown is a cross-sectional perspective view of the fixing box of this utility model.

[0020] Figure 3 The diagram shown is a three-dimensional structural schematic of the sealing plate of this utility model;

[0021] Figure 4 The diagram shown is a three-dimensional structural schematic of the first vibration mechanism of this utility model.

[0022] Figure 5 The diagram shown is a three-dimensional structural schematic of the blocking mechanism of this utility model;

[0023] Figure 6 The diagram shown is a three-dimensional structural schematic of the limiting baffle of this utility model.

[0024] The labels in the attached diagram are as follows: 1. Fixing box; 2. First tank; 3. Heating mechanism; 31. Electric heating rod; 32. First sleeve block; 33. Ventilation slot; 34. Heat-conducting plate; 4. Lower slide rail; 41. Second tank; 42. Limiting post; 43. Second sleeve block; 44. Vibrator; 45. First air outlet; 46. Second air outlet; 5. Upper slide rail; 51. Separation tank; 52. Vibrating block; 6. Fixing frame; 61. Electric... 62. Cylinder; 63. Stop block; 7. Insert block; 7. Feed hopper; 71. Fixed column; 72. Sleeve; 73. Arc plate; 74. Vibrating rod; 8. First collection box; 9. Second collection box; 10. First discharge body; 11. Second discharge body; 12. Air inlet; 13. Air outlet; 14. Air duct; 15. Wire mesh; 16. Blower; 17. Sealing plate; 18. Handle; 19. Magnet strip; 20. Limiting baffle. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Example 1: Please refer to Figures 1-6 A multi-stage vibrating grain grading and screening machine includes a fixed box 1; a first trough 2 is provided through both sides of the fixed box 1, the first trough 2 extends through the upper end of the fixed box 1, a heating mechanism 3 is provided on the inner wall of the first trough 2, an inclined sliding track 4 and an upper sliding track 5 are fixedly connected through the left end of the fixed box 1, the upper sliding track 5 is located above the sliding track 4, a uniformly distributed separation groove 51 is provided through the lower end of the upper sliding track 5, a plurality of vibrating blocks 52 are fixedly connected to the lower end of the upper sliding track 5, a blower 16 is fixedly connected to the bottom surface of the inner wall of the fixed box 1, a ventilation mechanism for ventilation of the interior of the sliding track 4 is provided at the right end of the first trough 2, a first vibration mechanism is provided on the sliding track 4, and a second vibration mechanism is provided in the feed hopper 7.

[0027] The inner wall of the fixed frame 6 is provided with a blocking mechanism, which includes an electric cylinder 61 and a stop block 62; the left and right ends of the inner wall of the fixed frame 6 are both fixed with electric cylinders 61, and the lower end of the output shaft of the electric cylinder 61 is fixed with a stop block 62.

[0028] In use, place the fixed frame 6 on top of the fixed box 1, and put the grains into the feed hopper 7. Activating the second vibration mechanism will initially vibrate the grains, breaking up any clumps and distributing them more evenly as they enter the upper slide chute 5. The grains will fall into the upper slide chute 5. Activating the vibration block 52 will vibrate the upper slide chute 5, and smaller grain particles will fall into the lower slide chute 4 through the separation trough 51. Activating the blower 16 will generate upward airflow. Activating the heating mechanism 3 will allow hot air to enter the lower slide chute 4 through the ventilation mechanism, thus drying the grains. Activating the first vibration mechanism... The small grain particles in the sliding track 4 can be vibrated, which makes the small grain particles slide down more smoothly and avoids blockage caused by particle accumulation or excessive friction. The electric cylinder 61 drives the baffle 62 to move up and down, which can adjust the speed and flow of grain entering the upper sliding track 5. When the vibrating block 52 is turned on to vibrate the upper sliding track 5, the baffle 62 of the blocking mechanism can briefly retain the material, prolong the vibration time, improve the vibration effect, and help shake off some dust. The dust falls into the upper sliding track 5 and is then blown out from the left end of the upper sliding track 5 by the flowing hot air, thus removing the dust from the grain.

[0029] Please see Figure 1 and Figure 2 In this embodiment, the second vibration mechanism includes a fixed column 71, a sleeve 72, an arc plate 73, and a vibrating rod 74. Two fixed columns 71 are fixedly connected to one side of the inner wall of the feed hopper 7. The sleeve 72 is sleeved on the side wall of the fixed column 71. An arc plate 73 is fixedly connected between the two sleeves 72. A vibrating rod 74 is fixedly connected to the lower end of the arc plate 73. There is a gap between the side wall of the sleeve 72 and the inner wall of the feed hopper 7. The sliding fit between the fixed column 71 and the sleeve 72 makes the arc plate 73 vibrate more flexibly. The vibrating rod 74 makes the arc plate 73 vibrate, enhancing the vibration effect. The gap design avoids friction between the sleeve 72 and the inner wall of the feed hopper 7, facilitating the rapid shaking of grains.

[0030] Please see Figure 1 and Figure 3 In this embodiment, a sealing plate 17 is hinged to the right end of the sliding track 4, and a handle 18 is fixed to the right end of the sealing plate 17. A magnetic strip 19 is fixed to the upper right edge of the sliding track 4. The right end of the magnetic strip 19 is attached to the left end of the sealing plate 17. The sealing plate 17 is made of iron material. The sealing plate 17 can be easily opened through the handle 18 to facilitate cleaning and maintenance of the inside of the sliding track 4. The magnetic strip 19 is attracted and fixed to the iron sealing plate 17 to ensure a seal and prevent material leakage.

[0031] Please see Figure 1In this embodiment, a second discharge body 11 is fixedly connected to the left end of the upper slide 5, and a first discharge body 10 is fixedly connected to the left end of the lower slide 4. A first collection box 8 and a second collection box 9 are placed to the left of the fixed box 1. The first collection box 8 is located below the first discharge body 10, and the second collection box 9 is located below the second discharge body 11. The lower ends of the second discharge body 11 and the first discharge body 10 are connected. The first discharge body 10 and the second discharge body 11 correspond to the discharge ports of the lower slide 4 and the upper slide 5, respectively. The first collection box 8 and the second collection box 9 facilitate the classification and collection of particles of different sizes.

[0032] Please see Figure 1 and Figure 5 In this embodiment, insert blocks 63 are fixedly attached to both sides of the lower end of the fixed frame 6. The left and right ends of the insert blocks 63 are respectively attached to the left and right end faces of the inner wall of the first groove 2. The lower end of the insert blocks 63 is attached to the upper end of the electric heating rod 31. The tight fit between the insert blocks 63 and the first groove 2 ensures that the fixed frame 6 is stably placed on the upper end of the fixed box 1. At the same time, the lower end of the insert blocks 63 is in contact with the electric heating rod 31, which can reduce the overflow of hot air.

[0033] Please see Figure 1 , Figure 5 and Figure 6 In this embodiment, limiting baffles 20 are fixedly attached to the upper parts of both sides of the fixed box 1. The ends of the two limiting baffles 20 that are close to each other and the ends of the two inserts 63 that are far apart from each other are attached. The limiting baffles 20 form a lateral limiting on the inserts 63, preventing the fixed frame 6 from shifting during operation and facilitating the stable placement of the fixed frame 6.

[0034] Example 2: Please refer to Figure 2 Based on Embodiment 1, this application provides a technical solution: the heating mechanism 3 includes an electric heating rod 31, a first sleeve block 32, a ventilation groove 33, and a heat-conducting plate 34; the electric heating rod 31 is placed on the bottom surface of the inner wall of the first groove 2, the first sleeve block 32 is sleeved on the side wall of the electric heating rod 31, the side wall of the first sleeve block 32 is in contact with the inner wall of the fixed box 1, two ventilation grooves 33 are opened through the upper end of the first sleeve block 32, and the heat-conducting plates 34 are uniformly distributed fixed to the left and right ends of the inner wall of the ventilation groove 33. The electric heating rod 31 provides a heat source, and the heat is conducted to the heat-conducting plate 34 through the first sleeve block 32. The heat-conducting plate 34 can increase the heat exchange area, so that the cold air of the blower 16 through the ventilation groove 33 becomes hot air.

[0035] Please see Figure 1 and Figure 2In this embodiment, the ventilation mechanism includes an air outlet 13, an air duct 14, and a wire mesh 15. An air outlet 13 is provided at the middle of the right end of the fixed box 1. The air outlet 13 is located above the heating mechanism 3. The air duct 14 is fixedly connected to the right end of the fixed box 1. An air inlet 12 is provided through the lower end of the sliding track 4. The lower end of the air inlet 12 and the right end of the fixed box 1 are both fixedly connected to the air duct 14. A wire mesh 15 is fixedly connected to the upper part of the inner wall of the air duct 14. Hot air is discharged from the air outlet 13. The air duct 14 guides the hot air into the air inlet 12 of the sliding track 4, allowing hot air to be introduced into the interior of the sliding track 4. The wire mesh 15 is used to filter debris and prevent grains from falling into the air duct 14.

[0036] Example 3: Please refer to Figure 4 Based on Embodiment 1, this application provides a technical solution: the first vibration mechanism includes a second groove 41, limiting posts 42, a second sleeve block 43, a vibrator 44, a first air outlet 45, and a second air outlet 46; the lower end of the sliding track 4 is provided with the second groove 41, and two limiting posts 42 are fixedly connected to both sides of the inner wall of the second groove 41. The side walls of the two limiting posts 42 are jointly fitted with the second sleeve block 43, and the lower end of the second sleeve block 43 is fixedly connected to the vibrator 44. The upper end is provided with multiple first air supply holes 45 and second air supply holes 46. The first air supply holes 45 are located to the right of the second sleeve block 43, and the second air supply holes 46 are located to the left of the second sleeve block 43. The vibrator 44 achieves stable vibration through the second sleeve block 43 and the limiting post 42, which promotes the flow of materials in the sliding channel 4 and prevents small grain particles from being blocked in the sliding channel 4. Some hot air can be evenly penetrated into the small grain particles through the first air supply holes 45 and the second air supply holes 46, which can improve the drying effect of the grain particles.

[0037] Working principle: When in use, the fixing frame 6 is first inserted into the first groove 2 at the upper end of the fixing box 1 through the inserts 63 on both sides at the lower end. The inserts 63 are in contact with the inner wall of the first groove 2 and the lower end is in contact with the electric heating rod 31. The limiting baffle 20 limits the inserts 63 laterally to ensure the stability of the fixing frame 6.

[0038] After the grains are put into the feed hopper 7, the second vibration mechanism is started. The vibrating rod 74 vibrates and drives the arc plate 73 and the sleeve 72 to vibrate on the fixed column 71, breaking up the agglomerated grain particles and making them enter the upper slide 5 evenly.

[0039] Next, the vibrating block 52 is turned on to vibrate the upper slide rail 5. Small grain particles fall into the lower slide rail 4 through the separation tank 51, while large particles enter the second collection box 9 through the second discharge body 11.

[0040] At the same time, the blower 16 is activated to generate upward airflow, the electric heating rod 31 of the heating mechanism 3 heats up, the heat is conducted to the heat conduction plate 34 through the first set of blocks 32, the hot air enters the air duct 14 through the ventilation slot 33, and then enters the interior of the lower slide 4 through the air inlet 12 of the lower slide 4 to dry the small grain particles. Some of the hot air will enter the interior of the upper slide 5 through the separation slot 51 to dry the grains in the upper slide 5.

[0041] The vibrator 44 of the first vibration mechanism vibrates on the limiting post 42 through the second block 43, which makes the small grain particles in the sliding channel 4 slide smoothly and avoid blockage. Hot air will also penetrate the material evenly through the first air outlet 45 and the second air outlet 46 to improve the drying effect.

[0042] When in use, the electric cylinder 61 of the blocking mechanism drives the stop block 62 to adjust the feeding speed, which can briefly retain the material in the upper slide 5, thereby extending the vibration time. The dust that is shaken off is blown out from the left end of the upper slide 5 with the hot air.

[0043] Finally, the dried and graded small grain particles enter the first collection box 8 through the first discharge body 10 to complete the multi-stage vibration screening and drying process.

[0044] When the slide 4 needs to be cleaned, the sealing plate 17 can be opened by the handle 18. The magnetic strip 19 adheres to the iron sealing plate 17 to ensure a seal, making it easy to use.

Claims

1. A multi-stage vibrating grain grading and screening machine, comprising a fixed box (1); characterized in that: The fixed box (1) has a first groove (2) through both sides, which extends through the upper end of the fixed box (1). The inner wall of the first groove (2) is provided with a heating mechanism (3). The left end of the fixed box (1) is fixedly connected with an inclined lower slide (4) and an upper slide (5). The upper slide (5) is located above the lower slide (4). The lower end of the upper slide (5) is provided with evenly distributed separation grooves (51). The lower end of the upper slide (5) is fixedly connected with multiple vibration blocks (52). (1) A blower (16) is fixedly connected to the bottom surface of the inner wall. A ventilation mechanism for ventilation of the inside of the sliding channel (4) is provided at the right end of the first trough (2). A first vibration mechanism is provided on the sliding channel (4). A second vibration mechanism is provided in the feed hopper (7). A blocking mechanism is provided on the inner wall of the fixed frame (6). The blocking mechanism includes an electric cylinder (61) and a stop block (62). Electric cylinders (61) are fixedly connected to both the left and right ends of the inner wall of the fixed frame (6). A stop block (62) is fixedly connected to the lower end of the output shaft of the electric cylinder (61).

2. The multi-stage vibrating grain grading and screening machine according to claim 1, characterized in that: The heating mechanism (3) includes an electric heating rod (31), a first sleeve block (32), a ventilation groove (33), and a heat-conducting plate (34). The electric heating rod (31) is placed on the bottom surface of the inner wall of the first groove (2). The first sleeve block (32) is sleeved on the side wall of the electric heating rod (31). The side wall of the first sleeve block (32) is in contact with the inner wall of the fixed box (1). Two ventilation grooves (33) are opened through the upper end of the first sleeve block (32). The left and right ends of the inner wall of the ventilation groove (33) are fixed with uniformly distributed heat-conducting plates (34).

3. The multi-stage vibrating grain grading and screening machine according to claim 1, characterized in that: The ventilation mechanism includes an air outlet (13), an air duct (14), and a wire mesh (15); an air outlet (13) is provided in the middle of the right end of the fixed box (1), the air outlet (13) is located above the heating mechanism (3), the air duct (14) is fixedly connected to the right end of the fixed box (1), an air inlet (12) is provided through the lower end of the sliding track (4), the lower end of the air inlet (12) and the right end of the fixed box (1) are both fixedly connected to the air duct (14), and a wire mesh (15) is fixedly connected to the upper part of the inner wall of the air duct (14).

4. The multi-stage vibrating grain grading and screening machine according to claim 1, characterized in that: The first vibration mechanism includes a second groove (41), a limiting post (42), a second sleeve block (43), a vibrator (44), a first air supply hole (45), and a second air supply hole (46). The lower end of the sliding track (4) is provided with the second groove (41). Two limiting posts (42) are fixedly connected to both sides of the inner wall of the second groove (41). The side walls of the two limiting posts (42) are fitted with the second sleeve block (43). The lower end of the second sleeve block (43) is fixedly connected with the vibrator (44). The upper end of the sliding track (4) is provided with multiple first air supply holes (45) and second air supply holes (46). The first air supply hole (45) is located to the right of the second sleeve block (43), and the second air supply hole (46) is located to the left of the second sleeve block (43).

5. The multi-stage vibrating grain grading and screening machine according to claim 1, characterized in that: The second vibration mechanism includes a fixed column (71), a sleeve (72), an arc plate (73), and a vibrating rod (74); two fixed columns (71) are fixedly connected to one side of the inner wall of the feed hopper (7), a sleeve (72) is sleeved on the side wall of the fixed column (71), an arc plate (73) is fixedly connected between the two sleeves (72), a vibrating rod (74) is fixedly connected to the lower end of the arc plate (73), and there is a gap between the side wall of the sleeve (72) and the inner wall of the feed hopper (7).

6. The multi-stage vibrating grain grading and screening machine according to claim 1, characterized in that: A sealing plate (17) is hinged to the right end of the slide (4), and a handle (18) is fixed to the right end of the sealing plate (17). A magnetic strip (19) is fixed to the upper right edge of the slide (4). The right end of the magnetic strip (19) and the left end of the sealing plate (17) are attached. The sealing plate (17) is made of iron material.

7. The multi-stage vibrating grain grading and screening machine according to claim 1, characterized in that: The left end of the upper slide (5) is fixed with a second discharge body (11), the left end of the lower slide (4) is fixed with a first discharge body (10), and the left side of the fixed box (1) is occupied by a first collection box (8) and a second collection box (9). The first collection box (8) is located below the first discharge body (10), and the second collection box (9) is located below the second discharge body (11). The lower ends of the second discharge body (11) and the first discharge body (10) are connected.

8. The multi-stage vibrating grain grading and screening machine according to claim 1, characterized in that: Inserts (63) are fixed to both sides of the lower end of the fixed frame (6). The left and right ends of the inserts (63) are respectively attached to the left and right ends of the inner wall of the first groove (2). The lower end of the inserts (63) is attached to the upper end of the electric heating rod (31).

9. The multi-stage vibrating grain grading and screening machine according to claim 8, characterized in that: Limiting baffles (20) are fixed to the upper parts of both sides of the fixed box (1), and the ends of the two limiting baffles (20) that are close to each other and the ends of the two inserts (63) that are far apart from each other are attached.

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