Tea circulating granulation process based on pneumatic dry method

Abstract

The invention relates to the field of tea granulation, and provides a circular tea granulation process based on a pneumatic dry method, which comprises the following steps of: preparing raw materials, removing impurities, deactivating enzymes, drying, screening, removing foreign matters, mixing, treating by a dry granulator, circularly reproducing fine powder and small particles, conveying finished product particles, screening out the fine powder and the particles, grinding, circularly reproducing after grinding, and finally discharging the finished product particles. The dry type granulator comprises a machine body, a discharging pipe is arranged at a discharging port in the bottom of the machine body, a vertical cylinder is fixedly installed on one side of the machine body, a collecting box is fixedly installed at the bottom of the vertical cylinder, the bottom of the vertical cylinder is communicated with the top of the collecting box, a conveying pipe is fixedly installed at the top of the collecting box, and a discharging pipe is arranged on the top side of the conveying pipe. Through pneumatic dry granulation, fine powder, small particles and unformed particles generated in the finished product particle processing process can be effectively and circularly remanufactured, raw materials are saved, and meanwhile the quality of finished product particles can be prevented from being affected.

Description

Technical Field

[0001] This invention belongs to the field of tea granulation technology, and particularly relates to a tea recycling granulation process based on pneumatic dry method. Background Technology

[0002] With the development of society, the processing methods of tea are constantly changing and upgrading. Among them, tea granules are a relatively new form of tea. By processing tea leaves into granules, they are made more convenient for consumers. Tea granules are a modern and convenient form of tea. They are made by crushing, screening, and pressing raw tea leaves into granules by machine, and then sterilizing and drying them at high temperatures.

[0003] Chinese patent application number CN202110968474.5 describes a process for making tea granules, including the following steps: selecting high-quality fresh tea leaves with high polyphenol content from high mountains, subjecting them to fixation, rolling, and fermentation in piles, controlling the temperature to not exceed 55 degrees Celsius, then drying, refining, grinding into powder, and shaping into small granules of varying sizes in round and cylindrical shapes, and finally drying the finished product. The granules are convenient to carry and drink, mainly because they sink and do not disperse, produce a bright red liquor, have a mellow and fragrant taste, and do not disperse even after multiple boils or infusions. They can be applied to fermented teas, green teas, white teas, golden teas, etc. However, the process of shaping the powder into spheres using specialized machinery generates fine powder, small particles, and unformed particles, which easily leads to waste of raw materials. The quality of the finished granules is inevitably affected by variations in size and the presence of fine powder, requiring improvement.

[0004] In summary, this invention provides a tea recycling granulation process based on pneumatic dry processing to solve the above-mentioned problems. Summary of the Invention

[0005] This invention provides a tea recycling granulation process based on pneumatic dry granulation. By using pneumatic dry granulation, large particles are crushed into small particles, which solves the problem that the quality of finished particles is inevitably affected by the size difference and the presence of fine powder in the existing technology.

[0006] A reverse wet granulation process for broken tea leaves includes the following steps: S1: Pick fresh tea leaves, various edible flowers, fruits and grains as raw materials, remove impurities from the raw materials and perform fixation; S2: Add the raw materials to the dryer to dry them. After drying, add the raw materials to the screening machine to screen them and remove foreign objects. After screening, add the raw materials to the sand mixer to mix and crush them thoroughly. S3: After the raw materials are mixed and crushed, they are fed into the dry granulator. The dry granulator compacts the raw materials to form tablets. The formed tablets are then conveyed to the crushing chamber of the dry granulator for crushing. The tablets are cut into small pieces that are easy to round. The small pieces are then compressed into finished granules by the dry granulator. The fine powder and small particles generated during the crushing and pressing process in the crushing chamber are separated from the small pieces of the predetermined size. After the fine powder and small particles are separated, they are recycled back into the dry granulator for granulation. S4: Remove the fine powder, small particles and unformed particles carried in the finished granules. Collect the removed fine powder and particles. Grind the small particles and unformed particles into smaller particles or fine powder. Then, recycle the removed fine powder and smaller particles into the dry granulator for granulation.

[0007] Preferably, the dry granulator in the pneumatic dry granulation process for tea recycling includes a machine body, a discharge pipe at the bottom outlet of the machine body, a vertical cylinder fixedly installed on one side of the machine body, a collection box fixedly installed at the bottom of the vertical cylinder, the bottom of the vertical cylinder being connected to the top of the collection box, a conveying pipe fixedly installed at the top of the collection box, a discharge pipe on the top side of the conveying pipe, the vertical cylinder being sleeved on the conveying pipe, the discharge pipe opening penetrating the vertical cylinder and connected to the bottom side of the conveying pipe, a conveying motor fixedly installed at the top of the conveying pipe, a spiral blade rotatably installed inside the conveying pipe, the output shaft end of the conveying motor being fixedly installed to the rotating shaft end of the spiral blade, a sleeve installed inside the vertical cylinder, the inner wall of the sleeve fitting against the outer wall of the conveying pipe, uniformly distributed discharge holes being opened on the sleeve wall and the conveying pipe wall, grinding components being installed on the machine body and the collection box, and a separation mechanism being installed on the outer wall of the machine body.

[0008] Preferably, the material conveying pipe is adapted to the material discharge hole on the sleeve wall and the material discharge hole is inclined from the inside to the outside, and the size of the material discharge hole on the material conveying pipe wall is larger than the size of the material discharge hole on the sleeve wall.

[0009] Preferably, the grinding assembly includes a horizontal plate fixedly installed at the bottom of the machine body, a drive motor fixedly installed on the top surface of the horizontal plate, a drive wheel rotatably installed on the bottom surface of the horizontal plate, a driven wheel rotatably installed at the bottom of the collection box, a belt sleeved on the drive wheel and the driven wheel, and a grinding roller rotatably installed inside the collection box.

[0010] Preferably, the output shaft end of the drive motor is fixedly installed with the shaft end of the drive wheel, the drive wheel and the driven wheel are connected to the belt for transmission, and the shaft end of the driven wheel is fixedly installed with the shaft end of the grinding roller.

[0011] Preferably, the inner wall of the collection box is provided with a pattern for crushing particles, and the side of the grinding roller is in contact with the inner wall of the collection box when it rotates.

[0012] Preferably, the separation mechanism includes a conveying pipe disposed on the outer wall of the machine body, a connecting part disposed in the middle of the conveying pipe, a fan fixedly installed in the connecting part, and a connecting pipe disposed on the side of the connecting part near the collecting cylinder. The two ends of the conveying pipe are respectively connected to the crushing chamber and the feeding channel of the machine body, and the two ends of the connecting pipe are respectively connected to the connecting part and the collecting box.

[0013] Preferably, the sleeve is slidably mounted on the conveying pipe, a plug ring is fixedly installed at the top of the sleeve, an insertion port is opened at the top of the vertical cylinder, the plug ring is slidably mounted on the insertion port, and an installation piece is fixedly installed at the end of the discharge pipe, the installation piece being fixedly installed on the outer wall of the conveying pipe by screws.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Pneumatic dry granulation can effectively recycle and reprocess fine powder, small particles, and unformed particles generated during the processing of finished granules, saving raw materials and preventing the quality of finished granules from being affected.

[0015] 2. The airflow drying process can be used to mix powders of any tea leaves, edible flowers, grains, etc., into granules with good flowability. The granulation speed is fast, the cost is low, and the material loss is effectively reduced. Attached Figure Description

[0016] Figure 1 This is a process flow diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a front view of the structural structure of the present invention; Figure 4 This is a structural diagram of the vertical cylinder, conveying pipe, and discharge pipe of the present invention; Figure 5 This is a cross-sectional structural diagram of the vertical cylinder, conveying pipe, sleeve, and collection box of the present invention. Figure 6 For the present invention Figure 4 Enlarged view of point A in the middle; Figure 7 This is a structural diagram of the sleeve and insert ring of the present invention; Figure 8 This is a cross-sectional view of the connecting part of the present invention.

[0017] Legend: 1. Machine body; 2. Feed pipe; 3. Vertical cylinder; 4. Collection box; 5. Conveying pipe; 6. Discharge pipe; 7. Conveying motor; 8. Spiral blade; 9. Sleeve; 10. Feed hole; 11. Grinding assembly; 111. Horizontal plate; 112. Drive motor; 113. Drive wheel; 114. Driven wheel; 115. Belt; 116. Grinding roller; 12. Separation mechanism; 121. Conveying pipe; 122. Connecting part; 123. Fan; 124. Connecting pipe; 13. Insert ring; 14. Insertion port; 15. Mounting plate. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1-8 This invention provides a reverse wet granulation process for broken tea leaves, comprising the following steps: S1: Pick fresh tea leaves, various edible flowers, fruits and grains as raw materials, remove impurities from the raw materials and perform fixation; S2: Add the raw materials to the dryer to dry them. After drying, add the raw materials to the screening machine to screen them and remove foreign objects. After screening, add the raw materials to the sand mixer to mix and crush them thoroughly. S3: After the raw materials are mixed and crushed, they are fed into the dry granulator. The dry granulator compacts the raw materials to form tablets. The formed tablets are then conveyed to the crushing chamber of the dry granulator for crushing. The tablets are cut into small pieces that are easy to round. The small pieces are then compressed into finished granules by the dry granulator. The fine powder and small particles generated during the crushing and pressing process in the crushing chamber are separated from the small pieces of the predetermined size. After the fine powder and small particles are separated, they are recycled back into the dry granulator for granulation. S4: Remove the fine powder, small particles and unformed particles carried in the finished granules. Collect the removed fine powder and particles. Grind the small particles and unformed particles into smaller particles or fine powder. Then, recycle the removed fine powder and smaller particles into the dry granulator for granulation.

[0020] The dry granulator in the pneumatic dry granulation process for tea recycling includes a machine body 1. A discharge pipe 2 is provided at the bottom outlet of the machine body 1. A vertical cylinder 3 is fixedly installed on one side of the machine body 1. A collection box 4 is fixedly installed at the bottom of the vertical cylinder 3. The bottom of the vertical cylinder 3 is connected to the top of the collection box 4. A conveying pipe 5 is fixedly installed at the top of the collection box 4. A discharge pipe 6 is provided on the top side of the conveying pipe 5. The vertical cylinder 3 is sleeved on the conveying pipe 5. The opening of the discharge pipe 2 passes through the vertical cylinder 3 and is connected to the bottom side of the conveying pipe 5. A conveying motor 7 is fixedly installed at the top of the conveying pipe 5. A spiral is rotatably installed inside the conveying pipe 5. The blade 8 is fixedly installed at the output shaft end of the conveying motor 7 and the rotating shaft end of the spiral blade 8. A sleeve 9 is provided inside the vertical cylinder 3. The inner wall of the sleeve 9 is in contact with the outer wall of the conveying pipe 5. The sleeve 9 and the conveying pipe 5 are provided with evenly distributed dropping holes 10. Grinding components 11 are provided on the machine body 1 and the collecting box 4. A separation mechanism 12 is provided on the outer wall of the machine body 1. After the raw material is conveyed into the machine body 1, it is compacted into tablets by the pressure of the roller pressing component inside the machine body 1. The formed tablets are conveyed to the crushing chamber of the dry granulation machine for crushing. The separation mechanism 12 on the outer wall of the machine body is activated to separate the tablets. The separation mechanism 12 separates the fine powder and small particles generated during the crushing and forming of tablets from the predetermined-sized small pieces. The fine powder and small particles separated in the crushing chamber are then transported back to the feeding channel of the machine body 1 for recirculation and granulation. The small pieces formed by the tablet crushing are compressed into finished granules by the granulation mechanism inside the machine body 1. The finished granules fall into the conveying pipe 5 through the discharge pipe 2. The conveying motor 7 at the top of the conveying pipe 5 is started, and the output shaft of the conveying motor 7 rotates, driving the spiral blades 8 to rotate. The rotating spiral blades 8 continuously convey the finished granules to the discharge pipe 6. During the conveying process, the finished granules roll and adhere to the inner wall of the conveying pipe 5. During the process, small particles and unformed particles in the finished granules fall through the discharge holes 10 opened on the conveying pipe 5 and the sleeve 9. The small particles and unformed particles fall into the collection box 4 through the vertical cylinder 3 for collection. The grinding component 11 set on the machine body 1 and the collection box 4 is started. The grinding component 11 grinds the small particles and unformed particles collected in the collection box 4 into smaller particles or fine powder. At the same time as the separation mechanism 12 is working, the small particles and fine powder in the collection box 4 can also be recycled to the dry granulator for granulation, which effectively improves the utilization rate of raw materials, avoids loss, and also avoids affecting the quality of finished granules.

[0021] The material discharge hole 10 on the wall of the conveying pipe 5 is adapted to the material discharge hole 10 on the sleeve 9, and the material discharge hole 10 is inclined from the inside to the outside. The size of the material discharge hole 10 on the wall of the conveying pipe 5 is larger than the size of the material discharge hole 10 on the wall of the sleeve 9. The inclined shape of the material discharge hole 10 from the inside to the outside facilitates the discharge of small particles and unformed particles. The larger size of the material discharge hole 10 on the wall of the conveying pipe 5 than the size of the material discharge hole 10 on the wall of the sleeve 9 can prevent the material discharge hole 10 on the conveying pipe 5 from becoming blocked.

[0022] The grinding assembly 11 includes a horizontal plate 111 fixedly mounted on the bottom of the machine body 1, a drive motor 112 fixedly mounted on the top surface of the horizontal plate 111, a drive wheel 113 rotatably mounted on the bottom surface of the horizontal plate 111, a driven wheel 114 rotatably mounted on the bottom of the collection box 4, a belt 115 sleeved on the drive wheel 113 and the driven wheel 114, and a grinding roller 116 rotatably mounted inside the collection box 4. The output shaft end of the drive motor 112 is fixedly mounted to the rotating shaft end of the drive wheel 113. The drive wheel 113 and the driven wheel 114 are meshed and connected to the belt 115 for transmission. The driven wheel 114 is rotated... The end is fixedly installed on the shaft end of the grinding roller 116; the drive motor 112 on the horizontal plate 111 is started, the output shaft of the drive motor 112 rotates and drives the drive wheel 113 to rotate, the drive wheel 113 rotates and drives the driven wheel 114 to rotate through the belt 115, the driven wheel 114 rotates and drives the grinding roller 116 to rotate in the collection box 4. While the grinding roller 116 rotates, it drives the small particles and unformed particles to the edge of the collection box 4 for grinding, grinding the small particles and unformed particles into smaller particles or fine powder, so that the subsequent separation mechanism 12 can recycle the raw materials to the dry granulator for reprocessing.

[0023] The inner wall of the collection box 4 is provided with a pattern for crushing particles. When the grinding roller 116 rotates, its side is in contact with the inner wall of the collection box 4, which can improve the grinding effect on small particles and unformed particles.

[0024] The separation mechanism 12 includes a conveying pipe 121 disposed on the outer wall of the machine body 1, a connecting part 122 disposed in the middle of the conveying pipe 121, a fan 123 fixedly installed in the connecting part 122, and a connecting pipe 124 disposed on the side of the connecting part 122 near the collecting cylinder. The two ends of the conveying pipe 121 are respectively connected to the crushing chamber of the machine body 1 and the feeding channel. The two ends of the connecting pipe 124 are respectively connected to the connecting part 122 and the collecting box 4. When the fan 123 in the connecting part 122 is started, the fan 123 drives the air to circulate in the crushing chamber, separating the fine powder and small particles generated during crushing and pressing in the crushing chamber from the small pieces of a predetermined size. The separated fine powder and small particles are conveyed back to the feeding channel of the dry granulator through the conveying pipe 121. At the same time as the fan 123 is started, the fine powder and small particles in the collecting box 4 can also be conveyed back to the feeding channel through the connecting pipe 124. This can save raw materials and avoid affecting the quality of the finished granules.

[0025] The sleeve 9 is slidably mounted on the feed pipe 5. A plug ring 13 is fixedly installed at the top of the sleeve 9. The top of the vertical cylinder 3 has a socket 14. The plug ring 13 is slidably mounted on the socket 14. An installation piece 15 is fixedly installed at the end of the discharge pipe 6. The installation piece 15 is fixedly installed on the outer wall of the feed pipe 5 by screws. The discharge pipe 6 can be disassembled by removing the installation piece 15. After disassembly, pulling the plug ring 13 to dislodge it from the socket 14 can remove the sleeve 9 from the vertical cylinder 3, which facilitates cleaning of the discharge hole 10 of the sleeve 9.

[0026] Working Principle: Fresh tea leaves, various edible flowers, fruits, and grains are harvested as raw materials. Impurities are removed, and the raw materials are blanched. The raw materials are then dried in a dryer, followed by screening to remove foreign objects. The screened raw materials are then thoroughly mixed and pulverized in a sand mixer. The pulverized raw materials are then fed into a dry granulator, where they are compacted into tablets. The tablets are then conveyed to the crushing chamber of the dry granulator for further crushing. Cut into small, easily round pieces. Start the fan 123 inside the connecting part 122. The fan 123 drives the air circulation in the crushing chamber, separating the fine powder and small particles generated during crushing and pressing from the predetermined-sized pieces. The separated fine powder and small particles are conveyed back to the feeding channel of the dry granulator through the conveying pipe 121 for reprocessing. The dry granulator compresses the small pieces into finished granules. The finished granules fall into the conveying pipe 5 through the discharge pipe 2. Start the conveying motor 7 at the top of the conveying pipe 5. The output shaft of the conveying motor 7 rotates, driving... The rotating spiral blade 8 continuously conveys the finished particles to the discharge pipe 6. During the conveying process, the finished particles roll against the inner wall of the conveying pipe 5. Small particles and unformed particles in the finished particles fall through the drop holes 10 opened on the conveying pipe 5 and the sleeve 9. The small particles and unformed particles fall into the collection box 4 through the vertical cylinder 3 for collection. The drive motor 112 on the horizontal plate 111 is started. The output shaft of the drive motor 112 rotates, driving the drive wheel 113 to rotate. The driven wheel 114 is driven to rotate by the belt 115. The rotation of the driven wheel 114 drives the grinding roller 116 to rotate in the collection box 4. While the grinding roller 116 is rotating, it pushes the small particles and unformed particles to the edge of the collection box 4 for grinding. The small particles and unformed particles are ground into smaller particles or fine powder. At the same time as the blower 123 is started, the fine powder and small particles in the collection box 4 can be transported back to the feeding channel for reprocessing through the connecting pipe 124. The finished particles after screening are discharged through the discharge pipe 6.

[0027] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A tea granulation process based on pneumatic dry processing, characterized in that, Includes the following steps: S1: Pick fresh tea leaves, various edible flowers, fruits and grains as raw materials, remove impurities from the raw materials and perform fixation; S2: Add the raw materials to the dryer to dry them. After drying, add the raw materials to the screening machine to screen them and remove foreign objects. After screening, add the raw materials to the sand mixer to mix and crush them thoroughly. S3: After the raw materials are mixed and crushed, they are fed into the dry granulator. The dry granulator compacts the raw materials to form tablets. The formed tablets are then conveyed to the crushing chamber of the dry granulator for crushing. The tablets are cut into small pieces that are easy to round. The small pieces are then compressed into finished granules by the dry granulator. The fine powder and small particles generated during the crushing and pressing process in the crushing chamber are separated from the small pieces of the predetermined size. After the fine powder and small particles are separated, they are recycled back into the dry granulator for granulation. S4: Remove the fine powder, small particles and unformed particles carried in the finished granules. Collect the removed fine powder and particles. Grind the small particles and unformed particles into smaller particles or fine powder. Then, recycle the removed fine powder and smaller particles into the dry granulator for granulation.

2. The tea granulation process based on pneumatic dry processing according to claim 1, characterized in that, The dry granulator in the pneumatic dry granulation process for tea recycling includes a machine body (1). A discharge pipe (2) is provided at the bottom outlet of the machine body (1). A vertical cylinder (3) is fixedly installed on one side of the machine body (1). A collection box (4) is fixedly installed at the bottom of the vertical cylinder (3). The bottom of the vertical cylinder (3) is connected to the top of the collection box (4). A conveying pipe (5) is fixedly installed at the top of the collection box (4). A discharge pipe (6) is provided on the top side of the conveying pipe (5). The vertical cylinder (3) is sleeved on the conveying pipe (5). The opening of the discharge pipe (2) passes through the bottom of the vertical cylinder (3) and the conveying pipe (5). The sides are connected. A conveying motor (7) is fixedly installed at the top of the conveying pipe (5). A spiral blade (8) is rotatably arranged inside the conveying pipe (5). The output shaft end of the conveying motor (7) is fixedly installed with the rotating shaft end of the spiral blade (8). A sleeve (9) is provided inside the vertical cylinder (3). The inner wall of the sleeve (9) is in contact with the outer wall of the conveying pipe (5). The sleeve (9) and the conveying pipe (5) are provided with uniformly distributed dropping holes (10). A grinding component (11) is provided on the machine body (1) and the collection box (4). A separation mechanism (12) is provided on the outer wall of the machine body (1).

3. The tea recycling granulation process based on pneumatic dry processing according to claim 2, characterized in that, The material conveying pipe (5) is adapted to the material drop hole (10) on the pipe wall of the sleeve (9), and the material drop hole (10) is set in an inclined shape from the inside to the outside. The size of the material drop hole (10) on the pipe wall of the material conveying pipe (5) is larger than the size of the material drop hole (10) on the pipe wall of the sleeve (9).

4. The tea granulation process based on pneumatic dry method according to claim 2, characterized in that, The grinding assembly (11) includes a horizontal plate (111) fixedly installed at the bottom of the machine body (1), a drive motor (112) fixedly installed on the top surface of the horizontal plate (111), a drive wheel (113) rotatably installed on the bottom surface of the horizontal plate (111), a driven wheel (114) rotatably installed at the bottom of the collection box (4), a belt (115) sleeved on the drive wheel (113) and the driven wheel (114), and a grinding roller (116) rotatably installed in the collection box (4).

5. The tea granulation process based on pneumatic dry method according to claim 4, characterized in that, The output shaft end of the drive motor (112) is fixedly installed with the shaft end of the drive wheel (113). The drive wheel (113) and the driven wheel (114) are meshed and connected to the belt (115). The shaft end of the driven wheel (114) is fixedly installed with the shaft end of the grinding roller (116).

6. The tea granulation process based on pneumatic dry method according to claim 4, characterized in that, The inner wall of the collection box (4) is provided with a pattern for crushing particles, and the side of the grinding roller (116) is in contact with the inner wall of the collection box (4) when it rotates.

7. The tea granulation process based on pneumatic dry method according to claim 2, characterized in that, The separation mechanism (12) includes a conveying pipe (121) disposed on the outer wall of the machine body (1), a connecting part (122) disposed in the middle of the conveying pipe (121), a fan (123) fixedly installed in the connecting part (122), and a connecting pipe (124) disposed on the side of the connecting part (122) near the collecting cylinder. The two ends of the conveying pipe (121) are respectively connected to the crushing chamber and the feeding channel of the machine body (1), and the two ends of the connecting pipe (124) are respectively connected to the connecting part (122) and the collecting box (4).

8. The tea granulation process based on pneumatic dry method according to claim 2, characterized in that, The sleeve (9) is slidably mounted on the feed pipe (5). A plug ring (13) is fixedly installed at the top of the sleeve (9). A socket (14) is opened at the top of the vertical cylinder (3). The plug ring (13) is slidably mounted on the socket (14). An installation piece (15) is fixedly installed at the end of the discharge pipe (6). The installation piece (15) is fixedly installed on the outer wall of the feed pipe (5) by screws.

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