Tea leaf primary processing production line

Abstract

The invention relates to a primary production line for tea leaves. The primary production line comprises a green storage unit, a withering and rocking unit, a fixation unit, a cooling and moisture regaining unit, a rolling unit and a drying unit which are connected in sequence. The withering and green rocking unit comprises two withering units, a first conveying mechanism, a second conveying mechanism and a green rocking unit, the first conveying mechanism is connected with the green storage unit and is used for selectively conveying tea leaves output by the green storage unit to the input end of the first withering unit or the input end of the second withering unit, and the second conveying mechanism is used for selectively conveying the tea leaves output by the green rocking unit to the input end of the first withering unit or the input end of the second withering unit; the output end of the first withering unit is connected with the second conveying mechanism, the second conveying mechanism is used for selectively conveying tea leaves output by the first withering unit to the input end of the green rocking unit or the fixation unit, and the output end of the green rocking unit is connected with the input end of the first withering unit; and the output end of the second withering unit is connected with the fixation unit.

Description

Technical Field

[0001] The present invention relates to the technical field of tea processing, and more particularly, to a primary tea processing production line. Background Art

[0002] Primary tea processing refers to the process of processing fresh tea leaves into semi-finished tea through various tea-making processes. The main processes of primary tea processing include withering, leaf airing, shaking, fixation, rolling, and drying, etc. Specifically, according to the tea-making processes required for different tea categories, the above processes can be combined to produce different varieties of primary tea such as white tea, black tea, green tea, oolong tea, etc. Among them, green tea and oolong tea are relatively common tea categories, which are widely popular in China and globally. In the traditional method, the primary processing of green tea and oolong tea is completed in different production line workshops respectively.

[0003] However, on the one hand, due to the strong specialization of the production lines for green tea and oolong tea, the equipment in each production line is idle during the non-production season or when the production volume is insufficient, resulting in low equipment utilization rate and high use and maintenance costs. On the other hand, setting up independent production workshops for the primary processing of green tea and oolong tea respectively requires a large floor space, which also increases the construction cost of the factory building. Summary of the Invention

[0004] The purpose of the present invention is to provide a primary tea processing production line, and the technical problems to be solved are: how to improve the equipment utilization rate, reduce the use and maintenance costs, and how to reduce the construction cost of the factory building.

[0005] To solve the above technical problems, the present invention adopts the following technical solution for the construction and maintenance costs of the factory building.

[0006] The present invention provides a primary tea processing production line, which includes: a green tea storage unit, a withering and shaking unit, a fixation unit, a cooling and moisture recovery unit, a rolling unit, and a drying unit that are connected in sequence; the withering and shaking unit includes a withering unit, a first conveying mechanism, a second conveying mechanism, and a shaking unit. There are two groups of withering units. The first conveying mechanism is connected to the green tea storage unit and is used to selectively convey the tea leaves output by the green tea storage unit to the input end of the first group of withering units or the input end of the second group of withering units. The output end of the first group of withering units is connected to the second conveying mechanism, and the second conveying mechanism is used to selectively convey the tea leaves output by the first group of withering units to the input end of the shaking unit or the fixation unit. The output end of the shaking unit is connected to the input end of the first group of withering units, and the output end of the second group of withering units is connected to the fixation unit.

[0007] In some embodiments of the present application, the tea primary processing production line is provided with two sets of sequentially connected fixation units, cooling and moisture recovery units, rolling units, and drying units; the second conveying mechanism is used to selectively convey the tea output by the first set of withering units to the input end of the shaking green unit or the fixation unit in one of the sets of fixation units, cooling and moisture recovery units, rolling units, and drying units; the output end of the second set of withering units is connected to the fixation unit in the other set of fixation units, cooling and moisture recovery units, rolling units, and drying units.

[0008] In some embodiments of the present application, the tea primary processing production line further includes a first connection unit, and the first connection unit includes a first elevator, a second elevator, and a first horizontal conveyor. Both the first elevator and the second elevator have a feed end and a discharge end, and are both arranged obliquely upward from the feed end to the discharge end; the feed end of the first elevator is located below the second conveying mechanism, and the discharge end of the second elevator is used to be connected to the fixation unit in one of the sets of fixation units, cooling and moisture recovery units, rolling units, and drying units; the first horizontal conveyor is located below the discharge end of the first elevator and above the feed end of the second elevator.

[0009] In some embodiments of the present application, the tea primary processing production line further includes a second connection unit, and the second connection unit includes a third elevator, a fourth elevator, and a second horizontal conveyor. Both the third elevator and the fourth elevator have a feed end and a discharge end, and are both arranged obliquely upward from the feed end to the discharge end; the feed end of the third elevator is connected to the second set of withering units, and the discharge end of the fourth elevator is used to be connected to the fixation unit in the other set of fixation units, cooling and moisture recovery units, rolling units, and drying units; the second horizontal conveyor is located below the discharge end of the third elevator and above the feed ends of both the second elevator and the fourth elevator.

[0010] In some embodiments of the present application, the second horizontal conveyor includes a horizontal conveyor support, a horizontal conveyor drive assembly, and a horizontal conveyor belt provided thereon. The horizontal conveyor drive assembly rotates forward and backward to drive the horizontal conveyor belt to convey the tea thereon to both ends of the horizontal conveyor support; the tea primary processing production line further includes two tea cutters, and the two tea cutters are respectively arranged at both ends of the horizontal conveyor support and above the feed ends of both the second elevator and the fourth elevator. The tea cutters are used to receive the tea on the horizontal conveyor belt and make it fall after being cut.

[0011] In some embodiments of the present application, the primary tea processing production line further includes a fine tea screening unit, a shaping unit, and an air separation elevator. The shaping unit includes a plurality of roller woks arranged in sequence, a batching horizontal conveyor movable along the arrangement direction of the roller woks, and an output horizontal conveyor extending along the arrangement direction of the roller woks. The drying unit, the fine tea screening unit, and the batching horizontal conveyor are connected in sequence. The batching horizontal conveyor moves to feed the tea thereon into each of the roller woks. The output horizontal conveyor is used to receive and convey the tea in each of the roller woks. The air separation elevator is used to receive the tea output by the output horizontal conveyor.

[0012] In some embodiments of the present application, the green tea storage unit, the leaf shaking unit, the withering unit, the rolling unit, the drying unit, and the air separation elevator all extend along a first direction, and the fixing unit, the cooling and moisture regain unit, the shaping unit, and the fine tea screening unit all extend along a second direction. The first direction is perpendicular to the second direction. The green tea storage unit, the leaf shaking unit, the withering unit, the fixing unit, the cooling and moisture regain unit, and the rolling unit are sequentially arranged at intervals in the second direction. The green tea storage unit, the leaf shaking unit, the withering unit, the air separation elevator, the shaping unit, the fine tea screening unit, and the drying unit are sequentially arranged at intervals in the second direction, and the rolling unit and the drying unit are arranged side by side at intervals in the first direction.

[0013] In some embodiments of the present application, the primary tea processing production line further includes a bagging elevator and a third conveying mechanism. The third conveying mechanism is used to selectively convey the tea in the drying unit of a group of fixing unit, cooling and moisture regain unit, rolling unit, and drying unit corresponding to the first group of withering units to the bagging elevator or the fine tea screening unit, and the drying unit of another group of fixing unit, cooling and moisture regain unit, rolling unit, and drying unit corresponding to the second group of withering units is connected to the fine tea screening unit.

[0014] In some embodiments of the present application, the two fixing units, the two cooling and moisture regain units, the two rolling units, and the two drying units in the two groups of fixing unit, cooling and moisture regain unit, rolling unit, and drying unit are arranged opposite to each other side by side.

[0015] In some embodiments of the present application, the withering unit includes a frame and a plurality of layers of conveyor belts stacked on the frame up and down, and the conveying directions of adjacent two layers of conveyor belts are opposite. Among them, the input end and the output end of the first group of withering units are respectively located on the topmost conveyor belt and the bottommost conveyor belt, and the bottommost conveyor belt of the first group of withering units is located above the second conveying mechanism. The input end and the output end of the second group of withering units are respectively located on the topmost conveyor belt and the bottommost conveyor belt.

[0016] As can be seen from the above technical solutions, the embodiments of the present invention have at least the following advantages and positive effects:

[0017] In the tea primary processing production line of the embodiments of the present invention, the tea is temporarily stored in the green tea storage unit for maintaining the freshness of the tea, and then is selectively conveyed by the first conveying mechanism to the first group of the withering units or the second group of the withering units. Among them, the tea conveyed to the first group of the withering units is suitable for the primary processing of oolong tea, and the tea conveyed to the second group of the withering units is suitable for the primary processing of green tea.

[0018] After the tea is withered in the first group of the withering units, it is conveyed by the second conveying mechanism to the shaking unit and shaken in the shaking unit. The tea after shaking re-enters the first group of the withering units for secondary withering. Specifically, the process of withering - shaking - withering can be repeated according to the production requirements of oolong tea. After this process is completed, the tea is conveyed by the second conveying mechanism to the fixing unit for fixing, and successively passes through the cooling and moisture recovery unit, the rolling unit and the drying unit to successively perform the processes of cooling and moisture recovery, rolling and drying, so as to complete the primary processing of oolong tea. After the tea is withered in the second group of the withering units, it successively passes through the fixing unit, the cooling and moisture recovery unit, the rolling unit and the drying unit to successively perform the processes of fixing, cooling and moisture recovery, rolling and drying, so as to complete the primary processing of green tea.

[0019] Through the coordinated cooperation among the first conveying mechanism, the two groups of withering units, the shaking unit and the second conveying mechanism, during the process of the tea being conveyed from the green tea storage unit to the fixing unit, the tea can choose to perform the withering process or the withering - shaking - withering process. Different varieties of tea can be initially processed in the same production line, thereby improving the equipment utilization rate, reducing the use and maintenance costs, and since the primary processing of green tea and oolong tea can be integrated in the same production workshop, the requirement for the floor space is reduced, thus reducing the construction cost of the factory building. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By considering the following detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings, various objectives, features and advantages of the present invention will become more obvious. The drawings are only illustrative diagrams of the present invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always represent the same or similar components.

[0021] Wherein:

[0022] Figure 1 is a schematic plan view of a tea primary processing production line shown according to an exemplary embodiment.

[0023] Figure 2 is Figure 1 a schematic three-dimensional view of

[0024] Figure 3 is Figure 2 an enlarged schematic view of area A in

[0025] The description of the reference numerals in the drawings is as follows:

[0026] 1. Green tea storage unit;

[0027] 2. Withering and shaking green unit; 21. Withering unit; 211. Frame; 212. Conveyor belt; 22. First conveying mechanism; 23. Second conveying mechanism; 24. Shaking green unit;

[0028] 3. Fixing green unit;

[0029] 4. Cooling and moisture-returning unit;

[0030] 5. Rolling unit;

[0031] 6. Drying unit;

[0032] 7. First connecting unit; 71. First elevator; 72. Second elevator; 73. First horizontal conveyor;

[0033] 8. Second connecting unit; 81. Third elevator; 82. Fourth elevator; 83. Second horizontal conveyor; 831. Horizontal conveyor support; 832. Horizontal conveyor drive assembly; 833. Horizontal conveyor belt;

[0034] 9. Tea cutting machine;

[0035] 10. Fine tea screening unit;

[0036] 20. Stir-frying type unit; 201. Rotary stir-frying pan; 202. Ingredients horizontal conveyor; 203. Discharge horizontal conveyor;

[0037] 30. Air separation elevator;

[0038] 40. Bagging elevator;

[0039] 50. Third conveying mechanism;

[0040] D1. First direction; D2. Second direction. Detailed implementation manners

[0041] Although the present invention can be easily embodied in different forms of embodiments, only some specific embodiments are shown in the drawings and will be described in detail in this specification. At the same time, it can be understood that this specification should be regarded as an exemplary illustration of the principles of the present invention and is not intended to limit the present invention to what is described herein.

[0042] Accordingly, a feature pointed out in this specification is used to illustrate one of the features of an embodiment of the present invention, rather than implying that each embodiment of the present invention must have the illustrated feature. In addition, it should be noted that this specification describes many features. Although some features may be combined to show possible system designs, these features may also be used in other combinations not explicitly described. Accordingly, unless otherwise specified, the illustrated combinations are not intended to be limiting.

[0043] In the embodiments shown in the drawings, the indication of directions (such as up, down, left, right, front, and back) is used to explain that the structures and movements of various elements of the present invention are not absolute but relative. When these elements are in the positions shown in the drawings, these explanations are appropriate. If the descriptions of the positions of these elements change, then the indications of these directions also change accordingly.

[0044] Please refer to Figure 1 and Figure 2 As shown in the figure, a tea primary processing production line provided by an embodiment of the present invention mainly includes a green tea storage unit 1, a withering and shaking unit 2, a fixation unit 3, a cooling and moisture recovery unit 4, a rolling unit 5, and a drying unit 6 that are connected in sequence. The withering and shaking unit 2 includes a withering unit 21, a first conveying mechanism 22, a second conveying mechanism 23, and a shaking unit 24. There are two groups of withering units 21. The first conveying mechanism 22 is connected to the green tea storage unit 1 and is used to selectively convey the tea output by the green tea storage unit 1 to the input end of the first group of withering units 21 or the input end of the second group of withering units 21. The output end of the first group of withering units 21 is connected to the second conveying mechanism 23. The second conveying mechanism 23 is used to selectively convey the tea output by the first group of withering units 21 to the input end of the shaking unit 24 or the fixation unit 3, and the output end of the shaking unit 24 is connected to the input end of the first group of withering units 21. The output end of the second group of withering units 21 is connected to the fixation unit 3.

[0045] In the tea primary processing production line of the embodiment of the present invention, the tea is briefly stored in the green tea storage unit 1 for maintaining the freshness of the tea, and then is selectively conveyed by the first conveying mechanism 22 to the first group of withering units 21 or the second group of withering units 21. Among them, the tea conveyed to the first group of withering units 21 is suitable for the primary processing of oolong tea, and the tea conveyed to the second group of withering units 21 is suitable for the primary processing of green tea.

[0046] After the tea leaves are withered in the first set of withering units 21, they are conveyed by the second conveying mechanism 23 to the shaking green unit 24 and shaken in the shaking green unit 24. The tea leaves after shaking are re-fed into the first set of withering units 21 for secondary withering. Specifically, the process of withering - shaking - withering can be repeated according to the production requirements of oolong tea. After this process is completed, the tea leaves are conveyed by the second conveying mechanism 23 to the fixing unit 3 for fixation, and successively pass through the cooling and moisture recovery unit 4, the rolling unit 5, and the drying unit 6 to successively perform the processes of cooling and moisture recovery, rolling, and drying, thereby completing the primary processing of oolong tea. After the tea leaves are withered in the second set of withering units 21, they successively pass through the fixing unit 3, the cooling and moisture recovery unit 4, the rolling unit 5, and the drying unit 6 to successively perform the processes of fixation, cooling and moisture recovery, rolling, and drying, thereby completing the primary processing of green tea.

[0047] Through the coordinated cooperation among the first conveying mechanism 22, the two sets of withering units 21, the shaking green unit 24, and the second conveying mechanism 23, the tea leaves can choose to undergo the withering process or the withering - shaking - withering process during the process of being conveyed from the tea storage unit 1 to the fixing unit 3. Different varieties of tea can be initially processed on the same production line, thereby improving the equipment utilization rate, reducing the use and maintenance costs. Moreover, since the primary processing of green tea and oolong tea can be integrated in the same production workshop, the requirement for floor space is reduced, thereby reducing the construction cost of the factory building.

[0048] It can be envisioned that the second conveying mechanism 23 can also directly convey the tea leaves withered in the first set of withering units 21 to the fixing unit 3 for fixation, and successively pass through the cooling and moisture recovery unit 4, the rolling unit 5, and the drying unit 6 to successively perform the processes of cooling and moisture recovery, rolling, and drying, thereby completing the primary processing of green tea.

[0049] In a specific embodiment, the tea primary processing production line is provided with two sets of fixing units 3, cooling and moisture recovery units 4, rolling units 5, and drying units 6 that are connected in sequence. The second conveying mechanism 23 is used to selectively convey the tea leaves output from the first set of withering units 21 to the input end of the shaking green unit 24 or the fixing unit 3 in one of the sets of fixing units 3, cooling and moisture recovery units 4, rolling units 5, and drying units 6. The output end of the second set of withering units 21 is connected to the fixing unit 3 in the other set of fixing units 3, cooling and moisture recovery units 4, rolling units 5, and drying units 6.

[0050] The arrangement of two sets of successively connected withering units 3, cooling and moisture-returning units 4, rolling units 5, and drying units 6 enables the tea leaves that have completed the withering - shaking - withering steps in the first set of withering units 21 and shaking units 24 to complete the subsequent processes in a set of independent post-stage units to complete the primary processing of oolong tea. The tea leaves that have completed withering in the second set of withering units 21 can complete the subsequent processes in another set of independent post-stage units to complete the primary processing of green tea. Such an arrangement can, on the one hand, realize the simultaneous processing of oolong tea and green tea, avoid the queuing problem caused by sharing the post-stage units, thereby improving production efficiency. On the other hand, it can also avoid the cleanliness problems introduced by sharing the post-stage units and ensure the quality of oolong tea and green tea.

[0051] It can be imagined that during the primary processing of oolong tea and green tea, the parameters required for each unit may be different. If sharing the post-stage units, parameter adjustment and control also need to be adaptively carried out, and the operation is rather cumbersome.

[0052] Please refer to Figure 3 , in a specific embodiment, the tea primary processing production line further includes a first connection unit 7. The first connection unit 7 includes a first elevator 71, a second elevator 72, and a first horizontal conveyor 73. Both the first elevator 71 and the second elevator 72 have a feed end and a discharge end, and are both arranged obliquely upward from the feed end to the discharge end. The feed end of the first elevator 71 is located below the second conveying mechanism 23, and the discharge end of the second elevator 72 is used to connect with the withering unit 3 in one of the sets of withering units 3, cooling and moisture-returning units 4, rolling units 5, and drying units 6. The first horizontal conveyor 73 is located below the discharge end of the first elevator 71 and above the feed end of the second elevator 72. Through the coordinated cooperation among the first elevator 71, the second elevator 72, and the first horizontal conveyor 73, efficient transportation is achieved, and a stable and feasible transportation path is provided for transporting the tea leaves in the first set of withering units 21 to the withering unit 3.

[0053] Please refer to Figure 1 and Figure 3 , in a specific embodiment, the tea primary processing production line further includes a second connection unit 8. The second connection unit 8 includes a third elevator 81, a fourth elevator 82, and a second horizontal conveyor 83. Both the third elevator 81 and the fourth elevator 82 have a feed end and a discharge end, and are both arranged obliquely upward from the feed end to the discharge end. The feed end of the third elevator 81 is connected to the second set of withering units 21, and the discharge end of the fourth elevator 82 is used to connect with the withering unit 3 in another set of withering units 3, cooling and moisture-returning units 4, rolling units 5, and drying units 6. The second horizontal conveyor 83 is located below the discharge end of the third elevator 81 and above the feed ends of both the second elevator 72 and the fourth elevator 82.

[0054] Through the coordinated cooperation among the third elevator 81, the fourth elevator 82, and the second horizontal conveyor 83, efficient transportation is achieved, and a stable and feasible transportation path is provided for transporting the tea leaves in the second group of withering units 21 to the fixation unit 3. Further, since the second horizontal conveyor 83 is respectively located above the feeding ends of the second elevator 72 and the fourth elevator 82, when both sets of the rear-section units are idle, the tea leaves withered by the second group of withering units 21 can be distributed into the two sets of rear-section units for subsequent processing, thereby improving the production efficiency of the primary green tea processing.

[0055] It can be conceived that the first horizontal conveyor 73 is located above the feeding end of the second elevator 72 and can also be located above the fourth elevator 82, whereby the tea leaves withered - shaken - withered by the first group of withering units 21 and the shaking unit 24 can also be distributed into the two sets of rear-section units for subsequent processing, thereby improving the production efficiency of the primary oolong tea processing.

[0056] Please refer to Figure 3 , in a specific embodiment, the second horizontal conveyor 83 includes a horizontal conveyor support 831, a horizontal conveyor drive assembly 832, and a horizontal conveyor belt 833 provided thereon. The horizontal conveyor drive assembly 832 rotates forward and backward to drive the horizontal conveyor belt 833 to convey the tea leaves thereon to both ends of the horizontal conveyor support 831. The tea leaf primary processing production line further includes two tea cutters 9, which are respectively provided at both ends of the horizontal conveyor support 831 and are respectively located above the feeding ends of the second elevator 72 and the fourth elevator 82. The tea cutters 9 are used to receive the tea leaves on the horizontal conveyor belt 833 and make them fall after being cut. The horizontal conveyor support 831, the horizontal conveyor drive assembly 832, and the horizontal conveyor belt 833 provide a feasible structure for the second horizontal conveyor 83 to supply materials to the feeding ends of the second elevator 72 and the fourth elevator 82. The tea cutters 9 can be selected to cut the tea leaves according to specific requirements, thereby enriching the functions of the tea leaf primary processing production line and being relatively compact in layout.

[0057] It can be conceived that the first horizontal conveyor 73 can be set with reference to the specific structure of the second horizontal conveyor 83, and a tea cutter 9 corresponding to the first horizontal conveyor 73 can also be provided thereon, which will not be elaborated here.

[0058] Please refer to Figure 1 and Figure 2, in a specific embodiment, the primary tea processing production line further includes a fine tea screening unit 10, a shaping unit 20, and an air separation elevator 30. The shaping unit 20 includes a plurality of roller woks 201 arranged in sequence, a batching conveyor 202 that can move along the arrangement direction of each roller wok 201, and a discharge conveyor 203 extending along the arrangement direction of each roller wok 201. The drying unit 6, the fine tea screening unit 10, and the batching conveyor 202 are connected in sequence. The batching conveyor 202 moves to feed the tea thereon into each roller wok 201. The discharge conveyor 203 is used to receive and convey the tea in each roller wok 201. The air separation elevator 30 is used to receive the tea output by the discharge conveyor 203. The tea output by the drying unit 6 passes through the fine tea screening unit 10, the shaping unit 20, and the air separation elevator 30 in sequence to perform fine tea screening, shaping, and impurity removal, thereby improving the appearance, aroma, and cleanliness of the primary tea and enhancing its quality.

[0059] In a specific embodiment, the green tea storage unit 1, the leaf shaking unit 24, the withering unit 21, the rolling unit 5, the drying unit 6, and the air separation elevator 30 all extend along the first direction D1, and the de-enzyming unit 3, the cooling and moisture recovery unit 4, the shaping unit 20, and the fine tea screening unit 10 all extend along the second direction D2. The first direction D1 is perpendicular to the second direction D2. The green tea storage unit 1, the leaf shaking unit 24, the withering unit 21, the de-enzyming unit 3, the cooling and moisture recovery unit 4, and the rolling unit 5 are sequentially arranged at intervals in the second direction D2. The green tea storage unit 1, the leaf shaking unit 24, the withering unit 21, the air separation elevator 30, the shaping unit 20, the fine tea screening unit 10, and the drying unit 6 are sequentially arranged at intervals in the second direction D2, and the rolling unit 5 and the drying unit 6 are arranged side by side at intervals in the first direction D1. The orthogonal layout of each unit in the primary tea processing production line can compress the floor area of the equipment, save space compared with the traditional linear arrangement, thereby further reducing the requirement for floor space and lowering the construction cost of the factory building.

[0060] In this embodiment, a plurality of roller woks 201 in the shaping unit 20 are arranged in sequence along the second direction D2, and the rolling assembly 5 includes a plurality of rolling machines arranged in sequence along the first direction D1.

[0061] Please refer to Figure 1, in a specific embodiment, the primary tea processing production line further includes a bagging elevator 40 and a third conveying mechanism 50. The third conveying mechanism 50 is used to selectively convey the tea in the drying unit 6 of a set of fixing units 3, cooling and moisture-returning units 4, rolling units 5, and drying units 6 corresponding to the first set of withering units 21 to the bagging elevator 40 or the sifting end unit 10, and the drying unit 6 of another set of fixing units 3, cooling and moisture-returning units 4, rolling units 5, and drying units 6 corresponding to the second set of withering units 21 is connected to the sifting end unit 10. The oolong tea finally processed in a set of drying units 6 after passing through the first set of withering units 21 can be directly bagged or can be subjected to subsequent sifting, shaping, and impurity removal. The green tea finally processed in another set of drying units 6 after passing through the second set of withering units 21 is subjected to subsequent sifting, shaping, and impurity removal to improve its quality.

[0062] It can be conceived that in other embodiments, after the primary processing of oolong tea and green tea, they can both be directly collected through the bagging elevator 40, both are directly sifted and shaped through the sifting end unit 10 and the frying and shaping unit 20 in sequence, and are collected after impurity removal through the air separation elevator 30. Or they can both choose whether to be directly collected or to be subjected to subsequent sifting, shaping, and impurity removal. The specific structures corresponding to different methods can be set with reference to the above embodiments and will not be elaborated here.

[0063] In a specific embodiment, the two fixing units 3, the two cooling and moisture-returning units 4, the two rolling units 5, and the two drying units 6 in the two sets are arranged side by side and opposite to each other, thereby further optimizing the spatial layout, reducing the requirement for floor space, and reducing the construction cost of the factory building.

[0064] Please refer to Figure 2 and Figure 3 , in a specific embodiment, the withering unit 21 includes a frame 211 and several layers of conveyor belts 212 stacked on top of each other on the frame 211, and the conveying directions of adjacent two layers of conveyor belts 212 are opposite. Among them, the input end and the output end of the first set of withering units 21 are respectively located on the topmost conveyor belt 212 and the bottommost conveyor belt 212, and the bottommost conveyor belt 212 in the first set of withering units 21 is located above the second conveying mechanism 23. The input end and the output end of the second set of withering units 21 are respectively located on the topmost conveyor belt 212 and the bottommost conveyor belt 212. The withering unit 21 conveys in the reverse direction through multiple layers of conveyor belts 212. Compared with withering the same scale of tea using single-layer equipment, it can effectively save floor space.

[0065] Please refer to Figures 1 to 3, in this embodiment, the leaf-shaking machine unit 24, the first withering machine unit 21 and the second withering machine unit 21 are arranged side by side in sequence in the second direction D2. The difference between the first withering machine unit 21 and the second withering machine unit 21 is that the bottommost conveyor belt 212 in the second withering machine unit 21 is shorter than the bottommost conveyor belt 212 in the first withering machine unit 21, which can make way for the second conveying mechanism 23, and enable the third elevator 81, the fourth elevator 82 corresponding to the second withering machine unit 21, and the corresponding group of fixing machine units 3, cooling and moisture-returning machine units 4, rolling machine units 5 and drying machine units 6 to be located inside the first elevator 71, the second elevator 72 corresponding to the first withering machine unit 21, and the corresponding group of fixing machine units 3, cooling and moisture-returning machine units 4, rolling machine units 5 and drying machine units 6, thereby optimizing the layout mode of the overall production line.

[0066] In this embodiment, the tea primary processing production line is arranged in the sample workshop, and the sample workshop is provided with an opening through which tea can be conveyed to the green tea storage unit 1.

[0067] It should be noted that the first conveying mechanism 22, the second conveying mechanism 23 and the third conveying mechanism 50 in the above embodiments can adopt a structural design similar to that of the first flat conveyor 73. Further, each conveying mechanism can adopt a single flat conveyor or a combination of multiple flat conveyors arranged vertically.

[0068] It should be noted that the connection between the machine units mentioned in the above embodiments can be completed with reference to the elevators, flat conveyors and the combination thereof in the above embodiments, or a conveying structure applied in the prior art such as a conveyor belt can be adopted. The machine units mentioned in the above embodiments can adopt the corresponding equipment disclosed in the prior art.

[0069] Although the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are descriptive and exemplary, rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A tea primary processing production line, used for the primary production of green tea and oolong tea, characterized in that: It includes a green tea storage unit, a withering and shaking unit, a green tea killing unit, a cooling and moisture-recovery unit, a rolling unit and a drying unit connected in sequence; The withering and shaking unit includes a withering unit, a first conveying mechanism, a second conveying mechanism and a shaking unit. The withering unit is provided with two groups. The first conveying mechanism is connected with the tea storage unit and is used to selectively convey the tea leaves output by the tea storage unit to the input end of the first group of withering units or the input end of the second group of withering units. The output end of the first group of withering units is connected with the second conveying mechanism. The second conveying mechanism is used to selectively convey the tea leaves output by the first group of withering units to the input end of the shaking unit or the withering unit. The output end of the shaking unit is connected with the input end of the first group of withering units, and the output end of the second group of withering units is connected with the withering unit.

2. The tea primary processing production line according to claim 1, characterized in that: The tea primary processing production line is equipped with two sets of sequentially connected withering units, cooling and moisture-recovering units, rolling units and drying units; The second conveying mechanism is used to selectively convey the tea leaves outputted from the first withering unit to the input end of the shaking unit or the withering unit among one of the withering units, the cooling and moisture-recovering unit, the rolling unit and the drying unit; The output end of the second group of withering units is connected to the withering unit in another group of withering units, cooling and moisture-reinforcing units, rolling units and drying units.

3. The tea primary processing production line according to claim 2, characterized in that: It also includes a first connection unit, which includes a first elevator, a second elevator and a first horizontal conveyor, wherein the first elevator and the second elevator both have a feed end and a discharge end, and are both arranged upwardly and inclined from the feed end to the discharge end; The feeding end of the first elevator is located below the second conveying mechanism, and the discharging end of the second elevator is used to connect with the fixing unit in one of the fixing units, cooling and moisture-recovering units, rolling units and drying units; The first horizontal conveyor is located below the discharge end of the first elevator and above the feed end of the second elevator.

4. The tea primary processing production line according to claim 3, characterized in that: It also includes a second connection unit, which includes a third elevator, a fourth elevator and a second horizontal conveyor, wherein the third elevator and the fourth elevator both have a feed end and a discharge end, and are arranged upwardly and inclined from the feed end to the discharge end; The feeding end of the third elevator is connected to the second group of withering units, and the discharging end of the fourth elevator is used to connect with the withering unit in another group of withering units, cooling and moisture-recovering units, rolling units and drying units; The second horizontal conveyor is located below the discharge end of the third elevator, and is located above the feed end of the second elevator and the feed end of the fourth elevator respectively.

5. The tea primary processing production line according to claim 4, characterized in that: The second horizontal conveyor comprises a horizontal conveyor support, a horizontal conveyor drive assembly and a horizontal conveyor belt arranged thereon, wherein the horizontal conveyor drive assembly rotates forward and reversely to drive the horizontal conveyor belt to convey the tea leaves on the horizontal conveyor belt to the two ends of the horizontal conveyor support; The tea primary processing production line also includes two tea cutters, which are respectively arranged at the two ends of the horizontal conveyor support and are respectively located above the feed end of the second elevator and the feed end of the fourth elevator. The tea cutters are used to receive the tea leaves on the horizontal conveyor belt and make them fall after being cut.

6. The tea primary processing production line according to claim 2, characterized in that: The tea leaves are then fed to the oven to be dried and then transported to the oven for drying. The tea leaves are then fed to the oven for drying. The tea leaves are then fed to the oven for drying. The tea leaves are then fed to the oven for drying. The tea leaves are then fed to the oven for drying. The tea leaves are then fed to the oven for drying.

7. The tea primary processing production line according to claim 6, characterized in that: The green storage unit, shaking unit, withering unit, rolling unit, drying unit and the winnowing elevator all extend along a first direction, the green fixing unit, cooling and moisture regaining unit, frying unit and the powder screening unit all extend along a second direction, and the first direction is perpendicular to the second direction; The green green storage group, green green shaking group, withering group, killing green green group, cooling and moisture conditioning group and the rolling group are arranged in sequence in the second direction, the green green storage group, green green shaking group, withering group, winnowing elevator, frying group, powder screening group and drying group are arranged in sequence in the second direction, and the rolling group and the drying group are arranged side by side in the first direction.

8. The tea primary processing production line according to claim 6, characterized in that: It also includes a bagging elevator and a third conveying mechanism, wherein the third conveying mechanism is used to selectively convey the tea leaves in a drying group of a withering group, a cooling and moisturizing group, a rolling group and a drying group corresponding to the first group of withering groups to the bagging elevator or the screening group, and the drying group of another group of withering group, a cooling and moisturizing group, a rolling group and a drying group corresponding to the second group of withering groups is connected with the screening group.

9. The tea primary processing production line according to claim 2, characterized in that: Among the two sets of withering machines, cooling and moistening machines, rolling machines and drying machines, the two withering machines, the two cooling and moistening machines, the two rolling machines and the two drying machines are all arranged side by side and opposite to each other.

10. The tea primary processing production line according to claim 2, characterized in that: The withering unit comprises a frame and a plurality of layers of conveyor belts stacked on the frame, and the conveying directions of the conveyor belts in two adjacent layers are opposite; Among them, the input end and output end of the first group of withering groups are respectively located on the topmost conveyor belt and the bottommost conveyor belt, and the bottommost conveyor belt of the first group of withering groups is located above the second conveying mechanism, and the input end and output end of the second group of withering groups are respectively located on the topmost conveyor belt and the bottommost conveyor belt.

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