Magnetic separation device for tea production

Abstract

The utility model discloses a magnetic separation device for tea production, which relates to the technical field of tea processing and comprises a fixed support, a feed hopper and a magnetic separation roller, the feed hopper is fixed at the upper end of the fixed support, the magnetic separation roller is positioned below a discharge port of the feed hopper, and a conveying belt for conveying tea subjected to magnetic separation is arranged below the magnetic separation roller. A driving motor for driving the magnetic separation roller to rotate is fixed to one side of the fixing support, a cleaning baffle is installed at the upper end of the conveying belt through a fixing piece, and the lower end of the cleaning baffle is in clearance fit with the surface of the conveying belt through a connecting piece. In the sorting process, metal objects on the magnetic separation roller can be cleaned, and the cleaned metal objects are separated from tea leaves and collected in the collecting frame in a centralized mode, so that the metal objects are prevented from being mixed with the tea leaves again, and the effect that the metal objects can be cleaned and collected without stopping magnetic separation is achieved; and the efficiency of magnetic separation of multiple batches of tea leaves is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of tea processing technology, and in particular to a magnetic separation device for tea production. Background Technology

[0002] In tea processing, in order to prevent the tea from containing (magnetically adsorbable) metal substances, it is usually necessary to use a magnetic separator to screen the tea. Traditional magnetic separators need to be manually cleaned after each use to maintain their magnetic separation effect. Although the cleaning effect is good, it is time-consuming, thus affecting the magnetic separation efficiency of the tea.

[0003] To address the aforementioned issues, patent document CN217594840U discloses a magnetic separation device for tea production. This device includes a mounting base plate, a lower tea hopper, a magnetic separation roller, and a conveyor belt. A mounting frame is mounted on the upper surface of the mounting base plate. The lower tea hopper is fixed to the upper inner wall of the mounting frame. The magnetic separation roller is located below the feed inlet of the lower tea hopper. A rotating shaft is fixedly mounted through the magnetic separation roller, and a drive motor is fixed to one end of the shaft. The shaft passes through the mounting frame and is clearance-fitted with it. A cleaning assembly is mounted on the mounting frame, comprising a cleaning ring, a connecting plate, and a screw. The cleaning ring is slidably connected to the magnetic separation roller, and connecting plates are fixed to both sides of the cleaning ring. The screw passes through the connecting plates and is clearance-fitted with them. The screw also passes through the mounting frame and is clearance-fitted with it. The cleaning ring cleans the metal adsorbed on the surface of the magnetic separation roller, facilitating its reuse and improving the magnetic separation efficiency of the tea.

[0004] Based on the above search and combined with existing technology, it was found that existing magnetic separation devices for tea production need to remove metal objects adsorbed on the magnetic separation rollers after magnetic separation is completed. Otherwise, the fallen metal objects will be mixed again in the tea being transported by the conveyor belt. Cleaning after magnetic separation takes a certain amount of time, resulting in low efficiency when multiple batches of tea are magnetically separated. Therefore, a magnetic separation device for tea production is needed. Utility Model Content

[0005] The purpose of this application is to provide a magnetic separation device for tea production to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a magnetic separation device for tea production, comprising a fixed support, a feeding hopper and a magnetic separation roller, wherein the feeding hopper is fixed at the upper end of the fixed support, the magnetic separation roller is located below the discharge port of the feeding hopper, a conveyor belt for conveying the magnetically separated tea is provided below the magnetic separation roller, and a drive motor for driving the magnetic separation roller to rotate is fixed on one side of the fixed support.

[0007] A cleaning baffle is installed at the upper end of the conveyor belt by a fixing component. The lower end of the cleaning baffle is fitted with the surface of the conveyor belt by a connecting component with a clearance. The upper end of the cleaning baffle is inclined and slides against the roller surface at the lower end of the magnetic separator. The lower end of the cleaning baffle is inclined to the side of the conveyor belt movement direction.

[0008] Two collection boxes are also placed inside the fixed bracket. Both collection boxes are located below the conveyor belt and on the front and rear sides of the conveyor belt.

[0009] A guide plate is also installed at the lower end of the feed hopper. The guide plate is set at an angle and guides the tea to the side of the magnetic separator roller that is close to the direction of the conveyor belt. The lower end of the guide plate is located above the upper end of the magnetic separator roller and there is a gap between the guide plate and the upper end of the magnetic separator roller for metal objects to pass through.

[0010] Preferably, the fixing component includes a guide strip, the two ends of which are fixed to the inner walls of the opposite sides of the fixing bracket, the bottom surface of the guide strip is clearance-fitted with the upper surface of the conveyor belt, and the upper end of the guide strip is provided with a fixing block that is rotatably connected to the cleaning baffle.

[0011] The guide bar has a centrally protruding guide arc surface on the side facing the conveyor belt. The guide arc surface is arc-shaped on the horizontal plane and both ends are located at the upper end of the collection frame.

[0012] Preferably, a first connecting shaft is fixedly inserted through the lower end of the cleaning baffle, and the two ends of the first connecting shaft respectively rotatably pass through two fixed blocks on the guide baffle;

[0013] The first connecting shaft extends to one end of the fixed block and has a threaded groove. A first fastening nut is screwed onto the first connecting shaft, and one side of the first fastening nut abuts against the outside of the fixed block.

[0014] Preferably, two fixed rods are fixed at the lower opening of the feed hopper, arranged symmetrically in front and behind. The upper end of the guide plate is rotatably connected between the two fixed rods through a second connecting shaft. The second connecting shaft movably passes through the fixed rods and extends to the outside of the two fixed rods at both ends.

[0015] The second connecting shaft also has threaded grooves at both ends, and a second fastening nut is screwed onto the second connecting shaft. One side of the second fastening nut abuts against the outside of the fixing rod.

[0016] Preferably, side flaps are fixed on both sides of the second connecting shaft, and the other side wall of the side flap is fixed to the lower end of the fixing rod. The side flap is a fan-shaped flap.

[0017] Preferably, the front end of the fixed rod is fixed with an anti-scattering baffle that is in the opposite direction of the guide plate by bolts. The lower end of the anti-scattering baffle is located on the side of the magnetic separator roller near the lower end of the cleaning baffle. Fixed side baffles are integrally formed on both the front and rear sides of the anti-scattering baffle, and the fixed side baffles and the anti-scattering baffles form a shovel-shaped baffle.

[0018] Preferably, an arc-shaped guide groove is provided in the middle of the guide arc surface. The arc-shaped guide groove is also arc-shaped and faces the same direction as the guide arc surface. The inner sidewall of the arc-shaped guide groove has a semi-circular cross-section.

[0019] In summary, the technical effects and advantages of this utility model are as follows:

[0020] 1. In this utility model, by setting up a cleaning baffle, a guide plate and a collection frame, the tea leaves descend in the feed hopper and fall to one side of the magnetic separator roller under the guidance of the guide plate, so that the metal objects in the tea leaves are attracted by the magnetic separator roller. The magnetic separator roller rotates under the action of the drive motor, and the rotation direction is opposite to the movement direction of the conveyor belt, so that the attracted metal objects move with the magnetic separator roller to the cleaning baffle. The cleaning baffle blocks and scrapes off the metal objects, causing them to fall off.

[0021] The fallen metal objects accumulate under the cleaning baffle due to the movement of the conveyor belt and move to both sides along the surface of the conveyor belt due to the obstruction of the fixing parts, eventually causing the metal objects to fall into the two collection boxes; while the magnetically separated tea leaves continue to fall onto the conveyor belt due to the guidance of the cleaning baffle and are separated from the metal objects. The tea leaves move with the conveyor belt and the tea leaves and metal objects will not mix again.

[0022] This allows for the removal of metal objects from the magnetic separator rollers during the sorting process. After cleaning, the metal objects are separated from the tea leaves and collected in a collection box, preventing the metal objects from mixing with the tea leaves again. This achieves the effect of cleaning and collecting metal objects without stopping the magnetic separation process, greatly improving the efficiency of magnetic separation for multiple batches of tea leaves.

[0023] 2. In this utility model, by setting the guide baffle, when the metal object scraped off by the cleaning baffle moves with the conveyor belt, after the metal object comes into contact with the guide arc surface, it separates and moves to both sides of the guide baffle under the guidance of the guide arc surface. Due to the continuous movement of the conveyor belt, a continuous force is applied to the metal object, so that the metal object moves to both sides of the conveyor belt on the surface of the conveyor belt and finally falls into the collection frame and is collected in a concentrated manner, thus achieving the purpose of automatically collecting the removed metal object in a concentrated manner. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure in this embodiment;

[0026] Figure 2 This is a partial front view of the structure in this embodiment;

[0027] Figure 3 This is a schematic diagram of the connection structure between the guide plate, the anti-scattering baffle, and the side flap in this embodiment;

[0028] Figure 4 This is a three-dimensional structural diagram of the cleaning baffle and guide strip in this embodiment.

[0029] In the diagram: 1. Fixed bracket; 2. Feed hopper; 21. Fixed rod; 3. Magnetic separator roller; 4. Drive motor; 5. Conveyor belt; 6. Cleaning baffle; 61. First connecting shaft; 62. First fastening nut; 7. Guide plate; 71. Second connecting shaft; 72. Second fastening nut; 8. Anti-scattering baffle; 81. Fixed side baffle; 9. Collection frame; 10. Guide bar; 101. Guide arc surface; 102. Arc-shaped guide groove; 11. Side baffle hinge. Detailed Implementation

[0030] 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.

[0031] Example: Reference Figure 1-4 The magnetic separation device for tea production shown includes a fixed support 1, a feed hopper 2 and a magnetic separation roller 3. The feed hopper 2 is fixed to the upper end of the fixed support 1, the magnetic separation roller 3 is located below the discharge port of the feed hopper 2, and a conveyor belt 5 for conveying the magnetically separated tea is provided below the magnetic separation roller 3. A drive motor 4 for driving the magnetic separation roller 3 to rotate is fixed on one side of the fixed support 1.

[0032] A cleaning baffle 6 is installed on the upper end of the conveyor belt 5 by means of a fixing member. The lower end of the cleaning baffle 6 is fitted with the surface of the conveyor belt 5 through a connecting member with a clearance. The upper end of the cleaning baffle 6 is inclined and slides against the roller surface at the lower end of the magnetic separator 3. The lower end of the cleaning baffle 6 is inclined to the side of the conveyor belt 5 in the direction of movement.

[0033] Two collection boxes 9 are also placed inside the fixed bracket 1. Both collection boxes 9 are located below the conveyor belt 5 and on the front and rear sides of the conveyor belt 5.

[0034] A guide plate 7 is also installed at the lower end of the feed hopper 2. The guide plate 7 is inclined and guides the tea to the side of the magnetic separator 3 that is close to the direction of movement of the conveyor belt 5. The lower end of the guide plate 7 is located above the upper end of the magnetic separator 3 and there is a gap between the guide plate 7 and the upper end of the magnetic separator 3 for metal objects to pass through.

[0035] Based on the above structure, the worker puts the tea leaves into the feed hopper 2 from the top. The tea leaves descend into the feed hopper 2 and, guided by the guide plate 7, fall onto one side of the magnetic separator roller 3 (located on the side of the conveyor belt 5's movement direction). This causes metal objects in the tea leaves to be attracted by the magnetic separator roller 3. The magnetic separator roller 3 rotates under the action of the drive motor 4, and the rotation direction is opposite to the movement direction of the conveyor belt 5 (see reference). Figure 2 As shown, in Figure 2 In the middle, the magnetic separator 3 rotates clockwise, and the conveyor belt 5 moves in a straight line from right to left, so that the adsorbed metal objects move with the magnetic separator 3 to the cleaning baffle 6. The cleaning baffle 6 blocks and scrapes off the metal objects, causing them to fall off.

[0036] The fallen metal objects are affected by the movement of the conveyor belt 5 and accumulate under the cleaning baffle 6. Due to the obstruction of the fixing parts, they move to both sides along the surface of the conveyor belt 5, eventually causing the metal objects to fall into the two collection boxes 9.

[0037] After magnetic separation, the tea leaves continue to fall onto the conveyor belt 5 under the guidance of the cleaning baffle 6 and are separated from the metal objects. The tea leaves move with the conveyor belt 5 and will not mix with the metal objects again.

[0038] In this way, metal objects on the magnetic separator roller 3 can be cleaned during the sorting process. After cleaning, the metal objects are separated from the tea leaves and collected in the collection frame 9, avoiding the re-mixing of metal objects with tea leaves. This achieves the effect of cleaning and collecting metal objects without stopping the magnetic separation, greatly improving the efficiency of magnetic separation of multiple batches of tea leaves.

[0039] Furthermore, the fixing component includes a guide bar 10, the two ends of which are fixed to the inner walls of the opposite sides of the fixed bracket 1, the bottom surface of the guide bar 10 is clearance-fitted with the upper surface of the conveyor belt 5, and the upper end of the guide bar 10 is provided with a fixing block that is rotatably connected to the cleaning baffle 6.

[0040] The guide bar 10 has a centrally protruding guide arc surface 101 on the side facing the conveyor belt 5. The guide arc surface 101 is arc-shaped on the horizontal plane and both ends are located at the upper end of the collection frame 9.

[0041] An arc-shaped guide groove 102 is provided in the middle of the guide arc surface 101. The arc-shaped guide groove 102 is also arc-shaped and faces the same direction as the guide arc surface 101. The inner side wall cross section of the arc-shaped guide groove 102 is semi-circular.

[0042] By setting the guide baffle 10, when the metal object scraped off by the cleaning baffle 6 moves with the conveyor belt 5, after the metal object comes into contact with the guide arc surface 101, it separates and moves to both sides of the guide baffle 10 under the guidance of the guide arc surface 101. Due to the continuous movement of the conveyor belt 5, a continuous force is applied to the metal object, so that the metal object moves to both sides of the conveyor belt 5 on the surface of the conveyor belt 5 and finally falls into the collection frame 9 and is collected in a concentrated manner, thus achieving the purpose of automatically collecting the removed metal object in a concentrated manner.

[0043] In addition, when there are many metal objects, they can enter the arc-shaped guide groove 102 during the accumulation process and move to both sides along the arc-shaped guide groove 102. This achieves the effect of effectively guiding the metal objects when there are many metal objects, and prevents the accumulated metal objects from scattering.

[0044] Furthermore, a first connecting shaft 61 is fixedly inserted through the lower end of the cleaning baffle 6, and the two ends of the first connecting shaft 61 respectively rotatably pass through two fixed blocks on the guide baffle 10;

[0045] The first connecting shaft 61 extends to one end of the fixed block and has a threaded groove. A first fastening nut 62 is screwed onto the first connecting shaft 61, and one side of the first fastening nut 62 abuts against the outside of the fixed block.

[0046] With the first connecting shaft 61 and the first fastening nut 62, the operator can adjust the angle of the cleaning baffle 6 by rotating it, so that the end of the cleaning baffle 6 fits against different positions of the magnetic separator 3, or meets the cleaning needs of magnetic separators 3 with different diameters, thus enhancing its adaptability. After adjustment, simply tightening the first fastening nuts 62 at both ends will allow the first connecting shaft 61 to be fixed by friction with the two fixing blocks on the guide baffle 10, thereby fixing the position of the cleaning baffle 6 after adjustment.

[0047] Furthermore, two fixed rods 21 are fixed at the lower opening of the feed hopper 2, which are symmetrically arranged front and back. The upper end of the guide plate 7 is rotatably connected between the two fixed rods 21 through the second connecting shaft 71. The second connecting shaft 71 moves through the fixed rods 21 and extends to the outside of the two fixed rods 21 at both ends.

[0048] The second connecting shaft 71 also has threaded grooves at both ends, and a second fastening nut 72 is screwed onto the second connecting shaft 71. One side of the second fastening nut 72 abuts against the outside of the fixing rod 21.

[0049] The tilt angle of the guide plate 7 can be adjusted by setting the second connecting shaft 71 and the second fastening nut 72, so as to adapt to different usage needs and achieve better results when used in conjunction with the cleaning baffle 6.

[0050] Furthermore, side flaps 11 are fixed on both sides of the second connecting shaft 71, and the other side wall of the side flap 11 is fixed to the lower end of the fixing rod 21. The side flap 11 is a flap that can be opened and closed in a fan shape.

[0051] By setting the side baffle 11, the falling tea leaves can be gathered, so that the tea leaves can move along the guide plate 7 to the magnetic separator roller 3, avoiding the tea leaves from falling from the side and avoiding excessive tea leaf loss during the magnetic separation process.

[0052] Furthermore, the front end of the fixing rod 21 is fixed with a scattering baffle 8 that is tilted in the opposite direction to the guide plate 7 by bolts. The lower end of the scattering baffle 8 is located on the side of the magnetic separation roller 3 near the lower end of the cleaning baffle 6. The front and rear sides of the scattering baffle 8 are integrally formed with fixed side baffles 81, and the fixed side baffles 81 and the scattering baffle 8 form a shovel-shaped baffle.

[0053] By setting the anti-scattering baffle 8, the tea leaves falling along the guide plate 7 can be limited, so that the tea leaves fall along the gap between the two and ensure that the tea leaves can land on the side wall of the magnetic separator roller 3, thereby ensuring the effectiveness of magnetic separation. Moreover, the two (guide plate 7 and anti-scattering baffle 8) work together to achieve the effect of evenly spreading the tea leaves, making the magnetic separation effect better.

[0054] The working principle of this utility model is as follows: In daily use, the drive motor 4 is turned on first, and then the staff puts the tea leaves into the feed hopper 2 from the top. The tea leaves fall into the feed hopper 2 and are guided by the guide plate 7 to fall on one side of the magnetic separator roller 3. The anti-scattering baffle 8 can limit the tea leaves falling along the guide plate 7, so that the tea leaves fall along the gap between the two, ensuring that the tea leaves can fall on the side wall of the magnetic separator roller 3, so that the metal objects in the tea leaves are attracted by the magnetic separator roller 3. The magnetic separator roller 3 rotates under the action of the drive motor 4, and the rotation direction is opposite to the movement direction of the conveyor belt 5, so that the attracted metal objects move with the magnetic separator roller 3 to the cleaning baffle 6. The cleaning baffle 6 blocks and scrapes off the metal objects, so that the metal objects fall off.

[0055] After falling, the metal objects accumulate under the cleaning baffle 6 due to the movement of the conveyor belt 5 and are blocked by the guide baffle 10. After the metal objects come into contact with the guide arc surface 101, they move apart to both sides of the guide baffle 10 under the guidance of the guide arc surface 101. Due to the continuous movement of the conveyor belt 5, a continuous force is applied to the metal objects, causing the metal objects to move to both sides of the conveyor belt 5 on the surface of the conveyor belt 5 and finally fall into the collection box 9.

[0056] After magnetic separation, the tea leaves continue to fall onto the conveyor belt 5 under the guidance of the cleaning baffle 6, and are separated from the metal objects. The tea leaves move with the conveyor belt 5, and the tea leaves and metal objects will not mix again.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A magnetic separation device for tea production, comprising a fixed support (1), a feed hopper (2), and a magnetic separation roller (3), wherein the feed hopper (2) is fixed to the upper end of the fixed support (1), the magnetic separation roller (3) is located below the discharge port of the feed hopper (2), a conveyor belt (5) for conveying the magnetically separated tea is provided below the magnetic separation roller (3), and a drive motor (4) for driving the magnetic separation roller (3) to rotate is fixed on one side of the fixed support (1), characterized in that: The upper end of the conveyor belt (5) is fitted with a cleaning baffle (6) by a fixing member. The lower end of the cleaning baffle (6) is fitted with the surface of the conveyor belt (5) by a connecting member. The upper end of the cleaning baffle (6) is inclined and slides against the roller surface at the lower end of the magnetic separator (3). The lower end of the cleaning baffle (6) is inclined to the side of the conveyor belt (5) in the direction of movement. Two collection boxes (9) are also placed inside the fixed bracket (1). Both collection boxes (9) are located below the conveyor belt (5) and on the front and rear sides of the conveyor belt (5). The feed hopper (2) is also equipped with a guide plate (7) at its lower end. The guide plate (7) is inclined and guides the tea leaves to the side of the magnetic separator (3) close to the direction of movement of the conveyor belt (5). The lower end of the guide plate (7) is located above the upper end of the magnetic separator (3) and there is a gap between the guide plate (7) and the upper end of the magnetic separator (3) for metal objects to pass through.

2. The magnetic separator for tea production according to claim 1, characterized in that: The fixing component includes a guide strip (10), the two ends of which are fixed to the inner walls of the opposite sides of the fixing bracket (1), the bottom surface of the guide strip (10) is clearance-fitted with the upper surface of the conveyor belt (5), and the upper end of the guide strip (10) is provided with a fixing block that is rotatably connected to the cleaning baffle (6). The guide bar (10) has a centrally protruding guide arc surface (101) on the side facing the conveyor belt (5). The guide arc surface (101) is arc-shaped on the horizontal plane and both ends are located at the upper end of the collection frame (9).

3. The magnetic separator for tea production according to claim 2, characterized in that: The cleaning baffle (6) is fixedly provided with a first connecting shaft (61) at its lower end, and the two ends of the first connecting shaft (61) respectively rotate through two fixed blocks on the guide baffle (10); The first connecting shaft (61) extends to one end of the fixed block and has a threaded groove. A first fastening nut (62) is screwed onto the first connecting shaft (61) and one side of the first fastening nut (62) abuts against the outside of the fixed block.

4. The magnetic separator for tea production according to claim 1, characterized in that: Two fixed rods (21) are fixed at the lower opening of the feed hopper (2) and are arranged symmetrically in front and behind. The upper end of the guide plate (7) is rotatably connected between the two fixed rods (21) through the second connecting shaft (71). The second connecting shaft (71) moves through the fixed rods (21) and extends to the outside of the two fixed rods (21) at both ends respectively. The second connecting shaft (71) also has threaded grooves at both ends. A second fastening nut (72) is screwed onto the second connecting shaft (71). One side of the second fastening nut (72) abuts against the outside of the fixing rod (21).

5. A magnetic separator for tea production according to claim 4, characterized in that: The second connecting shaft (71) has side flaps (11) fixed on both sides. The other side wall of the side flap (11) is fixed to the lower end of the fixing rod (21). The side flap (11) is a fan-shaped flap.

6. A magnetic separator for tea production according to claim 4, characterized in that: The front end of the fixed rod (21) is fixed with a scattering baffle (8) that is inclined in the opposite direction to the guide plate (7) by bolts. The lower end of the scattering baffle (8) is located on the side of the magnetic separation roller (3) near the lower end of the cleaning baffle (6). The front and rear sides of the scattering baffle (8) are integrally formed with fixed side baffles (81). The fixed side baffles (81) and the scattering baffle (8) form a shovel-shaped baffle.

7. A magnetic separator for tea production according to claim 2, characterized in that: An arc-shaped guide groove (102) is provided in the middle of the guide arc surface (101). The arc-shaped guide groove (102) is also arc-shaped and faces the same direction as the guide arc surface (101). The inner wall cross section of the arc-shaped guide groove (102) is semi-circular.

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