Oxidation fermentation equipment for tea processing

Abstract

The invention provides oxidation fermentation equipment for tea processing, which comprises a fermentation box, a hot air pipe and a cold air pipe are mounted on the fermentation box, an oxygen generator is mounted at the upper end of the fermentation box and is used for supplying oxygen to an inner cavity of the fermentation box, and a round cover is fixedly mounted at the top of the fermentation box. According to the oxidation fermentation equipment for tea processing, a cross-shaped partition plate is arranged in the rotary drum, four independent fermentation bins are formed, uniform distribution of tea is ensured, the problem of uneven local oxidation caused by traditional stacking fermentation is avoided, dynamic turning of the tea is achieved in combination with continuous anticlockwise rotation of the rotary drum, the tea in each fermentation bin can make full contact with oxygen, and the tea quality is improved. The tea leaves are guided to slide down along an inclined surface through the inclined design of the middle part of a cross-shaped partition plate in the rotary drum, and the tea leaves are effectively prevented from being accumulated and clamped in the feeding stage and the discharging stage by matching with the inclined structures of the inner walls of the two sides of the rotary drum and the operation of the air blowing assembly.

Description

Technical Field

[0001] The present invention belongs to the technical field of tea fermentation, and more specifically, particularly relates to an oxidation fermentation device for tea processing. Background Art

[0002] During the fermentation process of tea, the tea polyphenols in the tea are oxidized by the oxygen in the air to form oxidation products, and the proteins, polysaccharides, etc. in the tea are catalyzed by enzymes to form enzymatic hydrolysis products; the oxidation products and enzymatic hydrolysis products of tea polyphenols will produce various aromatic substances, thereby forming the aroma of tea; at the same time, due to different fermentation degrees of tea, the color, taste and nutritional components of tea are all different. Therefore, tea fermentation is an important link affecting the quality of tea.

[0003] There are still some deficiencies in the current oxidation fermentation device for tea processing during actual use: 1. At present, the common fermentation methods are mostly static spreading or manual turning of the pile, which have problems such as uneven oxygen distribution and inconsistent fermentation degree, affecting the stability of tea quality, and with a large labor intensity; 2. Most of the existing oxidation fermentation devices adopt a fixed fermentation tank design, with insufficient tea mixing, and it is easy to have phenomena of over-fermentation or under-fermentation in local areas; 3. The feeding method of the current oxidation fermentation device for tea processing is difficult to distribute the tea to be fermented to each fermentation area, and it is also impossible to achieve batch processing and continuous operation, resulting in chaotic tea distribution and being not conducive to the fermentation treatment of tea; 4. When the traditional oxidation fermentation device for tea processing discharges materials, it is necessary to manually assist in taking out the fermented tea from the fermentation container, with cumbersome operation and low efficiency. At the same time, due to the lack of an effective discharge guiding structure, the tea discharge is not smooth, easily leading to too long discharge time and affecting the processing efficiency.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and an oxidation fermentation device for tea processing is provided, in order to achieve a more practical and valuable purpose. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides an oxidation fermentation device for tea processing, which is achieved by the following specific technical means: An oxidation and fermentation device for tea processing, comprising a fermentation tank. A hot air pipe and a cold air pipe are installed on the fermentation tank. An oxygen generator is installed at the upper end of the fermentation tank for supplying oxygen to the inner cavity of the fermentation tank. A round cover is fixedly installed at the top of the fermentation tank. A three-way pipe communicating with the fermentation tank is fixedly installed at the upper end of the round cover. A first fan blade is arranged inside the round cover. A rotating cylinder is rotatably installed inside the fermentation tank. A number of through holes are formed on the outer surface of the rotating cylinder. Four arc-shaped openings one are equidistantly formed on the circumference of the middle part of the rotating cylinder. A partition plate is fixedly installed inside the rotating cylinder. A circular ring is fixedly installed inside the fermentation tank. The circular ring is movably sleeved on the middle part of the rotating cylinder. Arc-shaped openings two adapted to the arc-shaped openings one are formed on the upper and lower surfaces of the circular ring. A feed pipe and a discharge pipe are respectively fixedly installed at the upper and lower ends of the circular ring. Circular plates are fixedly installed on the inner walls of both sides of the fermentation tank. The two circular plates are respectively in contact with the two ends of the rotating cylinder. Accommodating cavities are formed on the two opposite surfaces of the two circular plates. A fifth rotating shaft is rotatably installed on each circular plate. A second fan blade is fixedly installed on each fifth rotating shaft. Four through openings are equidistantly formed on the circumferences of both sides of the rotating cylinder. A perforated baffle is embedded in each through opening. A first rotating shaft is rotatably installed on the bottom side of the inner cavity of the fermentation tank. A driving assembly is arranged outside the fermentation tank. The driving assembly includes a bracket and a motor.

[0006] Further, valves are arranged on the hot air pipe, the cold air pipe and the three-way pipe. A third bevel gear is fixedly installed at the shaft end of the first fan blade. A fourth bevel gear is meshed with the third bevel gear. A fourth rotating shaft is fixedly installed on the fourth bevel gear. The fourth rotating shaft is rotatably connected with the inner wall of the fermentation tank. A fourth gear is fixedly installed on the fourth rotating shaft.

[0007] Further, second connecting shafts are respectively fixedly installed at the two ends of the rotating cylinder. The two second connecting shafts respectively penetrate through the two circular plates and are rotatably connected with the inner walls of both sides of the fermentation tank. The bracket is fixedly installed at the outer end of the fermentation tank. The motor is fixedly installed on the bracket. A second rotating shaft and a third rotating shaft are rotatably installed on the bracket. The output shaft of the motor is fixedly connected with the second rotating shaft. A driving gear and a third gear are fixedly installed on the second rotating shaft. A driven gear meshed with the driving gear is fixedly installed on the third rotating shaft. The fourth gear is meshed with the third gear.

[0008] Further, one-way transmission components are provided on both the second rotating shaft and the third rotating shaft. Each one-way transmission component includes a circular sleeve and a turntable. On the outer side of each turntable, contact blocks are fixedly installed at equal circumferential intervals. On the inner wall of each circular sleeve, push blocks are slidably installed at equal circumferential intervals. On each push block, a limiting rod is fixedly installed. On each limiting rod, a spring is movably sleeved. On the outer side of each circular sleeve, connecting pieces are fixedly installed at equal circumferential intervals. Each limiting rod respectively passes through the connecting piece movably, and each push block is fixedly connected to the connecting piece through a spring. On the opposite ends of each push block and each contact block, contact inclined surfaces parallel to each other are provided. The second rotating shaft and the third rotating shaft are respectively fixedly connected to the middle parts of the two turntables, and the second connecting shaft and the first rotating shaft are respectively fixedly connected to the middle parts of the two circular sleeves.

[0009] Further, each second fan blade is located in the accommodation cavity. On each fifth rotating shaft, a first synchronous pulley is fixedly installed. On the first rotating shaft, two second synchronous pulleys are fixedly installed. On each second synchronous pulley and each first synchronous pulley, a first synchronous belt is sleeved. On the first rotating shaft, a second bevel gear is fixedly installed.

[0010] Further, a frame body is fixedly installed at the bottom of the fermentation box. A conveyor belt is arranged in the frame body. A driving roller and a driven roller are arranged in the conveyor belt. The driving roller and the driven roller are both rotatably installed in the frame body. At the shaft end of the driving roller, a fourth synchronous pulley is fixedly installed. A protective shell is fixedly installed on the outer side of the fermentation box. A first connecting shaft is rotatably installed in the protective shell. At both ends of the first connecting shaft, a third synchronous pulley and a first bevel gear are respectively fixedly installed. The first bevel gear meshes with the second bevel gear. A second synchronous belt is sleeved on the third synchronous pulley and the fourth synchronous pulley.

[0011] Further, limiting components are arranged on the outer side and the inner cavity of the fermentation box respectively for rotation limiting of the rotating cylinder and the first rotating shaft. Each limiting component includes a U-shaped plate, a rectangular rod and a ratchet. Each U-shaped plate is respectively fixedly installed on the outer side and the inner wall of the fermentation box. At both ends of each rectangular rod, a mounting shaft and a pawl are respectively fixedly installed. Each mounting shaft is respectively rotatably installed in the U-shaped plate. Each ratchet is respectively fixedly installed on the second connecting shaft and the first rotating shaft. Each pawl is respectively clamped into the tooth grooves on the ratchet. A torsion spring is installed on each mounting shaft.

[0012] Further, the feed pipe movably penetrates through the top of the fermentation box, and the discharge pipe movably penetrates through the bottom of the fermentation box and is located above the conveyor belt. On the bottom surface of the inner wall of the fermentation box, a slide rail is fixedly installed. A sliding rod is slidably installed on the slide rail. An electric telescopic rod is fixedly installed on the slide rail. The telescopic rod of the electric telescopic rod is fixedly connected to the sliding rod. One end of the sliding rod is fixedly installed with a blocking plate, and the blocking plate is inserted into the circular ring for blocking the lower arc-shaped opening two.

[0013] Further, the inner walls on both sides of the rotary drum incline towards the middle to assist the tea leaves to discharge from the first arc-shaped opening. The middle of the partition plate inclines towards both sides, and the partition plate is designed in a cross shape.

[0014] Further, the limiting components located on the outside are arranged inside the protective shell, and support legs are fixedly installed at the four corners of the bottom end of the fermentation box.

[0015] Compared with the prior art, the present invention has the following beneficial effects: First, a cross-shaped partition plate is arranged inside the rotary drum of the tea processing oxidation fermentation equipment, forming four independent fermentation bins, ensuring the uniform distribution of tea leaves, avoiding the problem of uneven local oxidation caused by traditional stacked fermentation. Combined with the continuous counterclockwise rotation of the rotary drum, the dynamic turning of the tea leaves is realized, enabling the tea leaves in each fermentation bin to fully contact oxygen, shortening the fermentation time, and improving the fermentation efficiency. The inclined design in the middle of the cross-shaped partition plate inside the rotary drum guides the tea leaves to slide down along the inclined plane, cooperating with the inclined structures of the inner walls on both sides of the rotary drum and the operation of the blowing component, effectively preventing the tea leaves from accumulating and jamming during the feeding stage and the discharging stage.

[0016] Second, in the tea processing oxidation fermentation equipment, the oxygen generator is combined with the through holes on the surface of the rotary drum to provide sufficient oxygen for the tea leaf fermentation. At the same time, the first fan blade rotates under the action of gear transmission, accelerating the distribution of oxygen in the fermentation box, improving the contact efficiency between the tea leaves and oxygen, promoting the oxidation fermentation reaction, shortening the fermentation time, and improving the fermentation efficiency.

[0017] Third, during the discharging stage of the tea processing oxidation fermentation equipment, the operation of the blowing component enables the tea leaves to be discharged from the rotary drum smoothly, greatly reducing the residue rate. The inclined design of the inner wall of the rotary drum further optimizes the discharging process, ensuring the efficient transportation of the tea leaves to the next link. The one-way transmission design of the conveyor belt ensures the effective transportation of the tea leaves, with convenient and efficient operation. During the discharging process, by automatically changing the rotation direction of the first fan blade, the waste gas generated during fermentation is quickly discharged from the three-way pipe, timely removing the waste gas, avoiding the influence of the waste gas on the fermentation environment and the tea leaf quality, and preparing for the next round of fermentation.

[0018] IV. The one-way transmission component realizes precise control of the rotation directions of the rotary drum and the rotating shaft through the cooperation of the contact block and the push block designed with inclined surfaces and the spring. During the counterclockwise rotation and fermentation process of the rotary drum, the blowing component (fan blade II) does not operate, avoiding the generated airflow from disturbing the distribution state of the tea leaves in the rotary drum, resulting in uneven contact between the tea leaves and oxygen. During the feeding process, the rotating shaft III can drive the rotating shaft I to rotate counterclockwise, enabling the blowing component (fan blade II) to work normally, which helps the discharge of the tea leaves. And the conveyor belt can only roll in one direction, which can effectively convey the discharged tea leaves. The ratchet and pawl structure in the limiting component effectively limits the rotation of the connecting shaft II and the rotating shaft, ensuring that it can only rotate counterclockwise. The limiting design further enhances the reliability of the equipment operation, preventing equipment failures caused by accidental rotation, and the structural design is reasonable.

[0019] V. In the oxidation and fermentation equipment for tea processing, the circular ring plays a supporting role for the rotary drum, enhancing the stability of the rotary drum during rotation. At the same time, it prevents the tea leaves from being thrown out during the rotation process, ensuring the stable operation of fermentation. Through the conveyor belt rolling in one direction, the automatic conveyance of the fermented tea leaves is realized. The integrated design reduces manual intervention, improves the coherence and automation degree of production, and facilitates the subsequent collection or further processing of the fermented tea leaves. The operation of the blowing component (fan blade II), fan blade I, rotary drum, and conveyor belt can be driven and controlled by only one motor. In each link of tea processing, each component starts sequentially and operates precisely, not only ensuring seamless connection of feeding, fermentation, discharging, and conveying, but also reducing costs and energy consumption with a compact structure, and realizing efficient and stable tea oxidation and fermentation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall oxidation and fermentation equipment for tea processing of the present invention.

[0021] Figure 2 is a schematic diagram of the connecting shaft I of the present invention.

[0022] Figure 3 is a schematic diagram of the oxygen generator of the present invention.

[0023] Figure 4 is a schematic diagram of the fermenter box cut open of the present invention.

[0024] Figure 5 is a schematic diagram of the circular plate cut open of the present invention.

[0025] Figure 6 is a schematic diagram of the bracket of the present invention.

[0026] Figure 7 is a schematic diagram of the circular ring of the present invention.

[0027] Figure 8 is a schematic diagram of the rotary drum of the present invention.

[0028] Figure 9 It is a schematic diagram of the through port of the present invention.

[0029] Figure 10 It is a schematic diagram of the cut-open rotary drum of the present invention.

[0030] Figure 11 It is a schematic diagram of the cut-open partition board of the present invention.

[0031] Figure 12 It is a schematic diagram of the one-way transmission assembly of the present invention.

[0032] Figure 13 It is a schematic diagram of the limit assembly of the present invention.

[0033] Figure 14 It is a schematic diagram of the cut-open round cover of the present invention.

[0034] Figure 15 It is a schematic diagram of the conveyor belt of the present invention.

[0035] In the figure, the corresponding relationship between the part names and the drawing numbers is as follows: 1. Fermentation box; 11. Protective shell; 12. First connecting shaft; 13. Third synchronous pulley; 14. First bevel gear; 15. Second synchronous belt; 2. Rotary drum; 21. First arc-shaped opening; 22. Second connecting shaft; 23. Partition board; 24. Through port; 25. Perforated baffle; 3. Ring; 31. Second arc-shaped opening; 32. Feed pipe; 33. Discharge pipe; 34. Slide rail; 35. Slide bar; 36. Plug plate; 37. Electric telescopic rod; 4. Round plate; 41. Accommodation cavity; 42. Fifth rotating shaft; 43. Second fan blade; 44. First synchronous pulley; 45. First rotating shaft; 46. Second synchronous pulley; 47. Second bevel gear; 48. First synchronous belt; 5. Bracket; 51. Motor; 52. Second rotating shaft; 53. Driving gear; 54. Third gear; 55. Third rotating shaft; 56. Driven gear; 6. One-way transmission assembly; 61. Round sleeve; 62. Turntable; 63. Contact block; 64. Push block; 65. Connecting piece; 66. Limit rod; 67. Spring; 7. Limit assembly; 71. U-shaped plate; 72. Rectangular rod; 73. Mounting shaft; 74. Pawl; 75. Ratchet; 8. Oxygen generator; 81. Round cover; 82. Three-way pipe; 83. Valve; 84. First fan blade; 85. Third bevel gear; 86. Fourth rotating shaft; 87. Fourth bevel gear; 88. Fourth gear; 9. Frame body; 91. Conveyor belt; 92. Fourth synchronous pulley. Specific embodiments

[0036] The following further describes in detail the embodiments of the present invention with reference to the drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0037] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Embodiment:

[0040] As shown in the Figure 1 to Figure 15 accompanying drawings: The present invention provides an oxidation fermentation device for tea processing, including a fermentation tank 1. A hot air pipe and a cold air pipe are installed on the fermentation tank 1. An oxygen generator 8 is installed at the upper end of the fermentation tank 1 for supplying oxygen to the inner cavity of the fermentation tank 1. A round cover 81 is fixedly installed at the top of the fermentation tank 1. A three-way pipe 82 communicating with the fermentation tank 1 is fixedly installed at the upper end of the round cover 81. A first fan blade 84 is arranged in the round cover 81. The rotation of the first fan blade 84 generates an air flow, which accelerates the discharge of the oxygen generated by the oxygen generator 8 into the fermentation tank 1 and accelerates the discharge of the waste gas in the fermentation tank 1 during the feeding stage. A rotating cylinder 2 is rotatably installed in the fermentation tank 1. A plurality of through holes are formed on the outer surface of the rotating cylinder 2. Four arc-shaped openings 21 are equidistantly arranged on the circumference of the middle part of the rotating cylinder 2. A partition plate 23 is fixedly installed in the rotating cylinder 2, which can divide the inner cavity of the rotating cylinder 2 into four independent fermentation bins to ensure the uniform distribution of tea leaves. A circular ring 3 is fixedly installed inside the fermentation box 1. The circular ring 3 is movably sleeved in the middle of the rotating cylinder 2. Arc-shaped openings two 31 adapted to the arc-shaped openings one 21 are formed on the upper and lower surfaces of the circular ring 3. A feed pipe 32 and a discharge pipe 33 are respectively fixedly installed at the upper and lower ends of the circular ring 3. Circular plates 4 are fixedly installed on the inner walls on both sides of the fermentation box 1. The two circular plates 4 are respectively in contact with the two ends of the rotating cylinder 2. Accommodation cavities 41 are formed on the opposite surfaces of the two circular plates 4. A rotating shaft five 42 is rotatably installed on each circular plate 4. A second fan 43 is fixedly installed on each rotating shaft five 42. By blowing air into the fermentation chamber through the rotation of the second fan 43, the tea leaves in the rotating cylinder 2 can be smoothly discharged; Four through openings 24 are circumferentially and equidistantly formed on the two side surfaces of the rotating cylinder 2. A perforated baffle 25 is embedded in each through opening 24 to prevent the tea leaves from leaking out of the through openings 24 while ensuring that the air can smoothly enter the rotating cylinder 2; Valves 83 are provided on the hot air pipe, the cold air pipe and the three-way pipe 82. A third bevel gear 85 is fixedly installed at the shaft end of the first fan 84. A fourth bevel gear 87 is meshed with the third bevel gear 85. A rotating shaft four 86 is fixedly installed on the fourth bevel gear 87. The rotating shaft four 86 is rotatably connected to the inner wall of the fermentation box 1. A fourth gear 88 is fixedly installed on the rotating shaft four 86; A rotating shaft one 45 is rotatably installed on the bottom side of the inner cavity of the fermentation box 1. A driving assembly is arranged outside the fermentation box 1. The driving assembly includes a bracket 5 and a motor 51. Connecting shafts two 22 are respectively fixedly installed at the two ends of the rotating cylinder 2. The two connecting shafts two 22 respectively penetrate through the two circular plates 4 and are rotatably connected to the inner walls on both sides of the fermentation box 1. The bracket 5 is fixedly installed at the outer end of the fermentation box 1. The motor 51 is fixedly installed on the bracket 5. A rotating shaft two 52 and a rotating shaft three 55 are rotatably installed on the bracket 5. The output shaft of the motor 51 is fixedly connected to the rotating shaft two 52. A driving gear 53 and a third gear 54 are fixedly installed on the rotating shaft two 52. A driven gear 56 meshed with the driving gear 53 is fixedly installed on the rotating shaft three 55. The fourth gear 88 is meshed with the third gear 54. The driving assembly provides power for the rotation of the rotating cylinder 2, the rotation of the first fan 84, the rotation of the second fan 43 and the rolling of the conveyor belt 91; One-way transmission components 6 are provided on both the second rotating shaft 52 and the third rotating shaft 55. Each one-way transmission component 6 includes a circular sleeve 61 and a turntable 62. Contact blocks 63 are fixedly installed on the outer side of each turntable 62 at equal circumferential intervals. Push blocks 64 are slidably installed on the inner wall of each circular sleeve 61 at equal circumferential intervals. A limiting rod 66 is fixedly installed on each push block 64. A spring 67 is movably sleeved on each limiting rod 66. Connecting pieces 65 are fixedly installed on the outer side of each circular sleeve 61 at equal circumferential intervals. Each limiting rod 66 movably penetrates through the connecting piece 65 respectively. Each push block 64 is fixedly connected to the connecting piece 65 through the spring 67 respectively. Contact inclined surfaces parallel to each other are provided at the opposite ends of each push block 64 and each contact block 63. The second rotating shaft 52 and the third rotating shaft 55 are fixedly connected to the middle parts of the two turntables 62 respectively. The second connecting shaft 22 and the first rotating shaft 45 are fixedly connected to the middle parts of the two circular sleeves 61 respectively, ensuring that during the counterclockwise rotation and fermentation process of the rotating drum 2, the blowing component (the second fan 43) does not operate, avoiding the generated airflow from disturbing the distribution state of the tea leaves in the rotating drum 2, resulting in uneven contact between the tea leaves and oxygen. During the feeding process, the third rotating shaft 55 can drive the first rotating shaft 45 to rotate counterclockwise, enabling the blowing component (the second fan 43) to work normally, which helps the discharge of the tea leaves, and the conveyor belt 91 can only roll in one direction, effectively conveying the discharged tea leaves; Each second fan 43 is located in the accommodation cavity 41. A first synchronous pulley 44 is fixedly installed on each fifth rotating shaft 42. Two second synchronous pulleys 46 are fixedly installed on the first rotating shaft 45. A first synchronous belt 48 is sleeved on each second synchronous pulley 46 and each first synchronous pulley 44. A second bevel gear 47 is fixedly installed on the first rotating shaft 45; A frame 9 is fixedly installed at the bottom of the fermentation tank 1. A conveyor belt 91 is arranged in the frame 9. A driving roller and a driven roller are arranged in the conveyor belt 91. The driving roller and the driven roller are both rotatably installed in the frame 9. A fourth synchronous pulley 92 is fixedly installed at the shaft end of the driving roller. A protective shell 11 is fixedly installed on the outer side of the fermentation tank 1. A first connecting shaft 12 is rotatably installed in the protective shell 11. A third synchronous pulley 13 and a first bevel gear 14 are fixedly installed at both ends of the first connecting shaft 12 respectively. The first bevel gear 14 meshes with the second bevel gear 47. A second synchronous belt 15 is sleeved on the third synchronous pulley 13 and the fourth synchronous pulley 92. The conveyor belt 91 can only roll in one direction, conveying the tea leaves discharged from the discharge pipe 33 for subsequent collection or further processing of the fermented tea leaves; Limit components 7 are provided on both the outer side and the inner cavity of the fermentation box 1, which are respectively used for rotation limit of the rotating drum 2 and the first rotating shaft 45. Each limit component 7 includes a U-shaped plate 71, a rectangular rod 72 and a ratchet 75. Each U-shaped plate 71 is fixedly installed on the outer side and the inner wall of the fermentation box 1 respectively. Installation shafts 73 and pawls 74 are fixedly installed at both ends of each rectangular rod 72 respectively. Each installation shaft 73 is rotatably installed in the U-shaped plate 71. Each ratchet 75 is fixedly installed on the second connecting shaft 22 and the first rotating shaft 45 respectively. Each pawl 74 is respectively engaged in the tooth groove on the ratchet 75. A torsion spring is installed on each installation shaft 73. The acting force of the ratchet teeth on the pawl 74 will cause the rectangular rod 72 to rotate around the installation shaft 73, and the torsion spring will deform. When the teeth pass by the pawl 74, the torsion spring will reset, causing the pawl 74 to re-engage in the next tooth groove of the ratchet 75, ensuring the reliability of the rotation limit; The feed pipe 32 movably penetrates through the top of the fermentation box 1, and the discharge pipe 33 movably penetrates through the bottom of the fermentation box 1 and is located above the conveyor belt 91. The bottom surface of the inner wall of the fermentation box 1 is fixedly installed with a slide rail 34. A slide rod 35 is slidably installed on the slide rail 34. An electric telescopic rod 37 is fixedly installed on the slide rail 34. The telescopic rod of the electric telescopic rod 37 is fixedly connected to the slide rod 35. One end of the slide rod 35 is fixedly installed with a blocking plate 36, and the blocking plate 36 is inserted into the ring 3 for blocking the lower arc-shaped opening 31; The inner walls on both sides of the rotating drum 2 are inclined towards the middle, which is used to assist the tea leaves to be discharged from the arc-shaped opening 21. The middle of the partition plate 23 is inclined towards both sides. The partition plate 23 is designed in a cross shape. Due to the cross shape of the partition plate 23 and the middle being inclined towards both sides, when loading materials, the tea leaves can slide along the inclined direction of the partition plate 23, avoiding being blocked in the middle of the fermentation bin; The limit component 7 located on the outer side is arranged in the protective shell 11. Support legs are fixedly installed at the four corners of the bottom end of the fermentation box 1.

[0041] The working principle of this embodiment: The first step: Tea feeding stage: Pour the tea leaves to be fermented through the feed pipe 32. The tea leaves enter the rotating drum 2 successively through the arc-shaped opening two 31 and the arc-shaped opening one 21 located on the upper side. The partition plate 23 and the inner wall of the rotating drum 2 form four fermentation bins. Since the partition plate 23 is designed in a cross shape and the middle part inclines towards both sides, during feeding, the tea leaves can slide along the inclined direction of the partition plate 23, avoiding being blocked in the middle of the fermentation bin. Start the motor 51 to drive the second rotating shaft 52 to rotate counterclockwise. The second rotating shaft 52 is connected to the second connecting shaft 22 through the one-way transmission component 6, and then drives the rotating drum 2 to rotate. During the rotation of the rotating drum 2, each fermentation bin is aligned with the feed pipe 32 in turn, realizing the uniform feeding of tea leaves into each fermentation bin. After tea leaves are put into all four fermentation bins, keep the motor 51 running to make the rotating drum 2 continue to rotate counterclockwise, preparing for the subsequent fermentation process. During this process, the ring 3 is movably sleeved in the middle of the rotating drum 2. The arc-shaped opening two 31 on its upper and lower sides is adapted to the arc-shaped opening one 21 of the rotating drum 2, providing a channel for the tea leaves to enter the rotating drum 2. At the same time, the ring 3 also provides a certain support for the rotating drum 2, enhancing the stability of the rotating drum 2 during rotation and preventing the tea leaves in each fermentation bin from being thrown out during the rotation of the rotating drum 2; The second step: Tea fermentation stage: Start the oxygen generator 8 to input oxygen into the fermentation tank 1. A number of through holes are opened on the surface of the rotating drum 2, and oxygen enters each fermentation bin through these through holes and reacts with the tea leaves in the rotating drum 2. During the fermentation process, the counterclockwise rotation of the second rotating shaft 52 will drive the third gear 54 to rotate counterclockwise. The third gear 54 meshes with the fourth gear 88, thus driving the fourth gear 88 to rotate. When the fourth gear 88 rotates, it drives the fourth rotating shaft 86 and the fourth bevel gear 87 to rotate. The fourth bevel gear 87 meshes with the third bevel gear 85, and then drives the third bevel gear 85 and the first fan blade 84 to rotate. The rotation of the first fan blade 84 generates an air flow, accelerating the discharge of the oxygen generated by the oxygen generator 8 into the fermentation tank 1, making the oxygen more evenly distributed in the fermentation tank 1, improving the contact efficiency between the tea leaves and oxygen, and promoting the fermentation process. During this stage, the hot air pipe and the external hot air equipment work together to adjust the hot air output power and flow rate in real time according to the fermentation temperature requirements. When the temperature is too high, the cold air pipe, in combination with the refrigeration equipment, conveys cold air to cool down, ensuring the stability of the fermentation environment. At the same time, the rotating drum 2 continues to rotate, making the tea leaves constantly tumble in the fermentation bin, further promoting the full contact between oxygen and tea leaves; Step 3: Tea discharging stage: After the tea in the rotating cylinder 2 has finished fermenting, start the electric telescopic rod 37. Its telescopic rod drives the sliding rod 35 to move. When the sliding rod 35 moves, it drives the blocking plate 36 to move, so that the blocking plate 36 no longer blocks the lower arc-shaped opening two 31. Start the motor 51 to make the rotating cylinder 2 rotate counterclockwise. When the arc-shaped opening one 21 of a fermentation chamber is aligned with the lower arc-shaped opening two 31, the through openings 24 on both sides communicate with the accommodating cavity 41 respectively. Then stop the rotation of the rotating cylinder 2. Then start the motor 51 again to make the rotating shaft two 52 rotate clockwise. The rotating shaft two 52 drives the driven gear 56 and the rotating shaft three 55 to rotate counterclockwise through the meshing of the driving gear 53 and the driven gear 56. The rotating shaft three 55 is connected to the rotating shaft one 45 through the one-way transmission assembly 6. Under the action of the one-way transmission assembly 6, the rotating shaft one 45 is driven to rotate counterclockwise. The rotating shaft one 45 drives the rotating shaft five 42 to rotate counterclockwise. The rotating shaft five 42 drives the fan two 43 to rotate counterclockwise. The fan two 43 blows air into the fermentation chamber. And because the inner walls on both sides of the rotating cylinder 2 incline towards the middle, under the action of blowing air and gravity, the tea in the fermentation chamber can be smoothly discharged from the discharge pipe 33 and fall onto the conveyor belt 91 below. Repeat the above steps to perform the discharging operation on the tea in the four fermentation chambers in sequence. An encoder is installed on the connecting shaft two 22 of the rotating cylinder 2. The encoder can accurately measure the rotation angle of the rotating cylinder 2. The control system accurately controls the rotation of the motor 51 according to the information fed back by the encoder, so as to realize the accurate alignment of the arc-shaped opening one 21 with the feed pipe 32 and the discharge pipe 33; Step 4: Exhaust gas discharging stage: During the discharging process, the rotating shaft two 52 rotates clockwise, and drives the fan one 84 to rotate through the connection structure between the rotating shaft two 52 and the fan one 84. At this time, the rotation direction of the fan one 84 is opposite to the rotation direction during the tea fermentation process. Open the valve 83 on the three-way pipe 82 and close the oxygen generator 8. The fan one 84 rotates to generate air flow, and accelerates the gas generated by the reaction in the fermentation tank 1 to be discharged from the three-way pipe 82, ensuring the gas update in the fermentation tank 1 and preparing for the next fermentation; Step 5: Principle of rotation direction control: One-way transmission components 6 are provided on both the second rotating shaft 52 and the third rotating shaft 55, restricting the rotation directions of the rotating cylinder 2 and the first rotating shaft 45, such that the rotating cylinder 2 and the first rotating shaft 45 can only rotate counterclockwise. When the second rotating shaft 52 rotates clockwise, it will drive the turntable 62 to rotate clockwise, and the contact block 63 on the turntable 62 will also rotate clockwise accordingly. Since parallel contact inclined surfaces are provided at the opposite ends of the contact block 63 and the push block 64, and the push block 64 is fixedly connected to the connecting member 65 through a spring 67, the acting force exerted by the contact block 63 on the push block 64 during clockwise rotation will cause the push block 64 to slide and be misaligned with the contact block 63. Therefore, when the turntable 62 rotates clockwise, it will not drive the circular sleeve 61 to rotate, and thus will not drive the rotating cylinder 2 connected to the circular sleeve 61 to rotate. When the second rotating shaft 52 rotates counterclockwise, it drives the turntable 62 to rotate counterclockwise. The counterclockwise rotation of the contact block 63 will exert a force on the push block 64, overcoming the elastic force of the spring 67, causing the push block 64 to push the circular sleeve 61 to rotate counterclockwise, thereby realizing that the counterclockwise rotation of the second rotating shaft 52 drives the rotating cylinder 2 connected to the circular sleeve 61 to rotate counterclockwise. Similarly, when the third rotating shaft 55 rotates counterclockwise, it will drive the first rotating shaft 45 to rotate counterclockwise, and then drive the blowing component (the second fan blade 43) to operate. When the third rotating shaft 55 rotates clockwise, the circular sleeve 61 connected to the first rotating shaft 45 does not rotate, and the turntable 62 connected to the third rotating shaft 55 idles, such that the first rotating shaft 45 will not rotate clockwise, ensuring that during the counterclockwise rotation and fermentation process of the rotating cylinder 2, the blowing component (the second fan blade 43) does not operate, while during the feeding process, the third rotating shaft 55 can drive the first rotating shaft 45 to rotate counterclockwise, enabling the blowing component (the second fan blade 43) to work properly; Step 6: Principle of rotation limit: Limit components 7 are provided on both the second connecting shaft 22 and the first rotating shaft 45 to limit the rotation of the second connecting shaft 22 and the first rotating shaft 45, ensuring that they can only rotate counterclockwise. The pawl 74 at one end of the rectangular rod 72 in the limit component 7 is stuck in the tooth groove of the ratchet wheel 75. When the second connecting shaft 22 drives the ratchet wheel 75 to rotate clockwise or the first rotating shaft 45 drives the ratchet wheel 75 to rotate clockwise, the pawl 74 will catch the ratchet wheel 75, preventing it from rotating clockwise. However, during counterclockwise rotation, due to the inclined surface design of the bottom surface of the pawl 74, the teeth of the ratchet wheel 75 can smoothly pass over the pawl 74 without getting stuck. The other end of the rectangular rod 72 is rotatably connected to the U-shaped plate 71 through the mounting shaft 73, and a torsion spring for resetting is provided on the mounting shaft 73. During the counterclockwise rotation of the ratchet wheel 75, the acting force of the teeth of the ratchet wheel 75 on the pawl 74 will cause the rectangular rod 72 to rotate around the mounting shaft 73, deforming the torsion spring. When the teeth pass over the pawl 74, the torsion spring resets, causing the pawl 74 to re-engage with the next tooth groove of the ratchet wheel 75, ensuring the reliability of the rotation limit. Through the coordinated action of the one-way transmission component 6 and the limit component 7, precise control of the rotation directions of the various components of the equipment is achieved, ensuring the stability and safety of the equipment operation; Step 7, tea leaf conveying stage: A frame 9 is fixedly installed at the bottom of the fermentation box 1. A conveyor belt 91 is arranged inside the frame 9. A fourth synchronous wheel 92 is fixedly installed on the driving roller inside the conveyor belt 91. A second synchronous belt 15 is sleeved between the fourth synchronous wheel 92 and the third synchronous wheel 13. When the first rotating shaft 45 drives the second bevel gear 47 to rotate, the second bevel gear 47 meshes with the first bevel gear 14, driving the first bevel gear 14, the first connecting shaft 12, the third synchronous wheel 13, the fourth synchronous wheel 92 and the driving roller to rotate. Since the first rotating shaft 45 can only rotate counterclockwise, the driving roller can only rotate counterclockwise, causing the conveyor belt 91 to only roll in one direction, conveying the tea leaves discharged from the discharge pipe 33 for subsequent collection or further processing of the fermented tea leaves; Step 8, the feed pipe 32 and the discharge pipe 33 are respectively connected to the upper and lower ends of the ring 3, which plays a role in guiding the tea leaves in and out of the rotating cylinder 2 during the feeding and discharging processes of the tea leaves. And with the cooperation of the blocking plate 36, the timing of the tea leaves entering and leaving can be effectively controlled. The circular plate 4 fits with both ends of the rotating cylinder 2, and its internal accommodation cavity 41 provides an installation space for the second fan blade 43. When the tea leaves are discharged, the second fan blade 43 rotates and blows air inside the accommodation cavity 41, pushing the tea leaves to be discharged smoothly.

[0042] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for specific purposes.

Claims

1. An oxidation fermentation device for tea processing, comprising a fermentation tank (1), wherein a hot air pipe and a cold air pipe are installed on the fermentation tank (1), and it is characterized in that: An oxygen generator (8) is installed at the upper end of the fermentation tank (1) for supplying oxygen to the inner cavity of the fermentation tank (1). A round cover (81) is fixedly installed at the top of the fermentation tank (1). A three-way pipe (82) communicating with the fermentation tank (1) is fixedly installed at the upper end of the round cover (81). A first fan blade (84) is arranged inside the round cover (81). A rotating cylinder (2) is rotatably installed inside the fermentation tank (1). A plurality of through holes are formed on the outer surface of the rotating cylinder (2). Four first arc-shaped openings (21) are equidistantly formed on the circumference of the middle part of the rotating cylinder (2). A partition plate (23) is fixedly installed inside the rotating cylinder (2). Among them, a ring (3) is fixedly installed inside the fermentation tank (1). The ring (3) is movably sleeved on the middle part of the rotating cylinder (2). Second arc-shaped openings (31) adapted to the first arc-shaped openings (21) are formed on the upper and lower surfaces of the ring (3). A feed pipe (32) and a discharge pipe (33) are respectively fixedly installed at the upper and lower ends of the ring (3). Among them, circular plates (4) are fixedly installed on the inner walls of both sides of the fermentation tank (1). The two circular plates (4) are respectively in contact with the two ends of the rotating cylinder (2). Accommodating cavities (41) are formed on the opposite surfaces of the two circular plates (4). A fifth rotating shaft (42) is rotatably installed on each circular plate (4). A second fan blade (43) is fixedly installed on each fifth rotating shaft (42). Four through openings (24) are equidistantly formed on the circumferences of both sides of the rotating cylinder (2). A perforated baffle (25) is embedded in each through opening (24). A first rotating shaft (45) is rotatably installed on the bottom side of the inner cavity of the fermentation tank (1). A driving assembly is arranged outside the fermentation tank (1). The driving assembly includes a bracket (5) and a motor (51).

2. The oxidation and fermentation equipment for tea processing according to claim 1, wherein: Valves (83) are arranged on the hot air pipe, the cold air pipe and the three-way pipe (82). A third bevel gear (85) is fixedly installed at the shaft end of the first fan blade (84). A fourth bevel gear (87) is meshed with the third bevel gear (85). Among them, a fourth rotating shaft (86) is fixedly installed on the fourth bevel gear (87). The fourth rotating shaft (86) is rotatably connected with the inner wall of the fermentation tank (1). A fourth gear (88) is fixedly installed on the fourth rotating shaft (86).

3. The oxidation and fermentation equipment for tea processing according to claim 2, characterized in that: Connecting shafts two (22) are respectively fixedly installed at the two ends of the rotating cylinder (2). The two connecting shafts two (22) respectively penetrate through the two circular plates (4) and are rotatably connected with the inner walls of both sides of the fermentation tank (1). The bracket (5) is fixedly installed at the outer end of the fermentation tank (1). The motor (51) is fixedly installed on the bracket (5). A second rotating shaft (52) and a third rotating shaft (55) are rotatably installed on the bracket (5). The output shaft of the motor (51) is fixedly connected with the second rotating shaft (52). A driving gear (53) and a third gear (54) are fixedly installed on the second rotating shaft (52). Among them, a driven gear (56) meshed with the driving gear (53) is fixedly installed on the third rotating shaft (55). The fourth gear (88) is meshed with the third gear (54).

4. The oxidation and fermentation equipment for tea processing according to claim 3, wherein: A one-way transmission assembly (6) is provided on each of the second rotating shaft (52) and the third rotating shaft (55). Each one-way transmission assembly (6) includes a circular sleeve (61) and a turntable (62). Contact blocks (63) are fixedly installed at equal circumferential intervals on the outer side of each turntable (62). Push blocks (64) are slidably installed at equal circumferential intervals on the inner wall of each circular sleeve (61). A limiting rod (66) is fixedly installed on each push block (64). A spring (67) is movably sleeved on each limiting rod (66). Connecting pieces (65) are fixedly installed at equal circumferential intervals on the outer side of each circular sleeve (61). Each limiting rod (66) movably penetrates through the connecting piece (65) respectively. Each push block (64) is fixedly connected to the connecting piece (65) through a spring (67). Contact inclined surfaces which are parallel to each other are arranged at the opposite ends of each push block (64) and each contact block (63). Among them, the second rotating shaft (52) and the third rotating shaft (55) are fixedly connected to the middle parts of the two turntables (62) respectively. The second connecting shaft (22) and the first rotating shaft (45) are fixedly connected to the middle parts of the two circular sleeves (61) respectively.

5. The oxidation and fermentation equipment for tea processing according to claim 4, wherein: Each second fan blade (43) is located in the accommodation cavity (41). A first synchronous pulley (44) is fixedly installed on each fifth rotating shaft (42). Two second synchronous pulleys (46) are fixedly installed on the first rotating shaft (45). A first synchronous belt (48) is sleeved on each second synchronous pulley (46) and each first synchronous pulley (44). A second bevel gear (47) is fixedly installed on the first rotating shaft (45).

6. The oxidation and fermentation equipment for tea processing according to claim 5, characterized in that: A frame body (9) is fixedly installed at the bottom of the fermentation box (1). A conveyor belt (91) is arranged in the frame body (9). A driving roller and a driven roller are arranged in the conveyor belt (91). The driving roller and the driven roller are both rotatably installed in the frame body (9). A fourth synchronous pulley (92) is fixedly installed at the shaft end of the driving roller. Among them, a protective shell (11) is fixedly installed on the outer side of the fermentation box (1). A first connecting shaft (12) is rotatably installed in the protective shell (11). A third synchronous pulley (13) and a first bevel gear (14) are fixedly installed at the two ends of the first connecting shaft (12) respectively. The first bevel gear (14) meshes with the second bevel gear (47). A second synchronous belt (15) is sleeved on the third synchronous pulley (13) and the fourth synchronous pulley (92).

7. The oxidation and fermentation equipment for tea processing according to claim 6, characterized in that: Limiting components (7) are arranged on the outer side and the inner cavity of the fermentation box (1) respectively for rotation limiting of the rotating cylinder (2) and the first rotating shaft (45). Each limiting component (7) includes a U-shaped plate (71), a rectangular rod (72) and a ratchet wheel (75). Each U-shaped plate (71) is fixedly installed on the outer side and the inner wall of the fermentation box (1) respectively. Mounting shafts (73) and pawls (74) are fixedly installed at the two ends of each rectangular rod (72) respectively. Each mounting shaft (73) is rotatably installed in the U-shaped plate (71). Each ratchet wheel (75) is fixedly installed on the second connecting shaft (22) and the first rotating shaft (45). Wherein, each of the pawls (74) is respectively engaged in the tooth grooves on the ratchet wheel (75), and a torsion spring is installed on each of the mounting shafts (73).

8. The oxidation and fermentation equipment for tea processing according to claim 7, characterized in that: The feed pipe (32) movably penetrates through the top of the fermentation tank (1), the discharge pipe (33) movably penetrates through the bottom of the fermentation tank (1) and is located above the conveyor belt (91). A slide rail (34) is fixedly installed on the bottom surface of the inner wall of the fermentation tank (1), a slide rod (35) is slidably installed on the slide rail (34), and an electric telescopic rod (37) is fixedly installed on the slide rail (34). The telescopic rod of the electric telescopic rod (37) is fixedly connected to the slide rod (35); Wherein, one end of the slide rod (35) is fixedly installed with a blocking plate (36), and the blocking plate (36) is inserted into the ring (3) for blocking the lower arc-shaped opening two (31).

9. The oxidation and fermentation equipment for tea processing according to claim 8, wherein: The inner walls on both sides of the rotary drum (2) are inclined towards the middle to assist the tea leaves to be discharged from the arc-shaped opening one (21); Wherein, the middle of the partition plate (23) is inclined towards both sides, and the partition plate (23) is designed in a cross shape.

10. The oxidation and fermentation equipment for tea processing according to claim 9, wherein: The outer limiting component (7) is arranged in the protective shell (11), and support legs are fixedly installed at the four corners of the bottom end of the fermentation tank (1).

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