Full-automatic processing production line of Liupu tea

Abstract

The invention discloses a full-automatic processing production line of Liupao tea, which comprises a microwave enzyme deactivation machine used for enzyme deactivation of picked tea leaves, so that enzyme activity of the tea leaves is stopped, and excessive oxidation of chlorophyll is prevented; the first rolling machine is in butt joint with the output end of the microwave fixation machine through a first conveying belt; the second rolling machine is used for re-rolling the tea leaves rolled by the first rolling machine; the drying machine is used for drying the re-rolled tea leaves, so that the water content of the tea leaves is less than or equal to 15%; the screening machine is used for removing crushed leaves, stem segments, dust, ropes and hair in the dried tea leaves; the steaming module is used for softening the screened tea leaves; the forming module is used for pressing the softened tea leaves into bricks, cakes or tuberous shapes; and the aging chamber is used for aging the tea leaves which are pressed into the shapes of bricks, cakes or blocks. According to the production line, full-automatic linkage processing can be achieved, the labor cost and manual intervention are reduced, the production efficiency is high, and the production line belongs to the technical field of Liupao tea processing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of Liupao tea processing, and particularly to a full-automatic processing production line for Liupao tea. BACKGROUND

[0003] The traditional production process of Liupao tea generally includes picking, fixation, initial rolling, pile fermentation, re-rolling and drying to form rough tea, and refining, which is based on the rough tea and includes screening, deep pile fermentation, steaming and pressing, and aging. In the production process and regulations, in order to ensure the traditional taste of tea, some operations need to be manually operated, which not only has low material rate but also is difficult to guarantee the product quality control.

[0004] Although some automatic equipment such as fixation machine, pile fermentation machine and winnowing machine has been developed in the existing Liupao tea processing process, some manual operation problems can be solved by using the existing automatic tea production equipment. However, the automatic equipment of the existing production line cannot be linked and processed automatically, and needs more manual assistance. SUMMARY

[0005] In view of the above problems, the present application provides a full-automatic processing production line for Liupao tea, which can automatically link and process, reduce labor cost and manual intervention, and has high production efficiency.

[0006] The specific technical scheme is as follows: A full-automatic processing production line for Liupao tea, comprising: a microwave fixation machine, which is used for fixation of picked tea leaves to stop enzyme activity and prevent excessive oxidation of chlorophyll; a first rolling machine, which is connected to the output end of the microwave fixation machine through a first conveying belt, and is used for initial rolling of the tea leaves to break the cell wall of the tea leaves and promote the exosmosis of tea juice; a second rolling machine, which is used for re-rolling of the tea leaves after rolling by the first rolling machine to break the leaves again, uniform fermentation and improve the exosmosis of tea juice; a dryer, which is used for drying the tea leaves after re-rolling to make the moisture content of the tea leaves ≤15%; a screening machine, which is used for removing the broken leaves, stem segments, dust, ropes and hair in the tea leaves after drying; a steaming module, which is used for softening the tea leaves after screening; a forming module, which is used for pressing the softened tea leaves into bricks, cakes or tea shapes; and an aging room, which is used for aging the tea leaves pressed into bricks, cakes or tea shapes.

[0007] Preferably, the microwave fixation machine comprises a microwave conveying belt, a support, a fixation bin and a microwave generating structure, the microwave conveying belt passes through the fixation bin, the support is fixed at the bottom of the fixation bin to support the fixation bin, and the microwave generating structure is installed on the fixation bin to form a microwave field; wherein the inside of the fixation bin is hollow and the two ends are open structures, the two ends of the microwave conveying belt respectively extend outward from the two ends of the fixation bin, and the belt of the microwave conveying belt adopts a Teflon coated glass fiber cloth or a metal mesh belt.

[0008] Preferably, the first rolling machine comprises a plurality of first rolling containers, the plurality of first rolling containers are uniformly distributed, the plurality of first rolling containers are connected through a first rotating frame, the first rotating frame is connected with a first rotating motor, so that the plurality of first rolling containers rotate with the first rotating frame, the top of each first rolling container is provided with a first feeding port for receiving tea after fixation from the microwave conveying belt; the bottom of each first rolling container is provided with a first discharging port for removing tea after rolling, and a first bottom plate which can be opened and closed is arranged at the first discharging port, one end of the first bottom plate is connected with the edge of the first discharging port through a hinge, and the other end of the first bottom plate is hinged with a first driving cylinder for driving the first bottom plate to open and close relative to the first discharging port.

[0009] Preferably, the bottom of the first rolling machine is provided with a pile conveying belt, and the end of the pile conveying belt is provided with a pile bin; the pile bin is connected with a first overturning device for overturning the pile bin; one side of the pile bin is provided with a pile turning bin, and the pile turning bin is connected with a second overturning device for overturning the pile turning bin.

[0010] Preferably, the second rolling machine comprises a plurality of second rolling containers, the plurality of second rolling containers are uniformly distributed, the plurality of second rolling containers are connected through a second rotating frame, the second rotating frame is connected with a second rotating motor, so that the plurality of second rolling containers rotate with the second rotating frame, the top of each second rolling container is provided with a second feeding port for receiving tea after pile turning from the pile turning bin; the bottom of each second rolling container is provided with a second discharging port for removing tea after rolling, and a second bottom plate which can be opened and closed is arranged at the second discharging port, one end of the second bottom plate is connected with the edge of the second discharging port through a hinge, and the other end of the second bottom plate is hinged with a second driving cylinder for driving the second bottom plate to open and close relative to the second discharging port.

[0011] Preferably, the drying machine comprises a drying conveying belt and a drying bin, the drying conveying belt passes through the drying bin, one end of the drying conveying belt is located below the second rolling machine for receiving tea after rolling; the drying bin dries the tea conveyed on the drying conveying belt by electric heating, so that the moisture of the tea is ≤15%.

[0012] Preferably, the screening machine comprises a winnower and an electrostatic deduster, the feeding port of the winnower is connected with the end of the drying conveying belt for receiving the tea leaves conveyed by the drying conveying belt, and the feeding port of the electrostatic deduster is connected with the discharging port of the winnower for receiving the tea leaves after screening and grading and electrostatically dedusting the tea leaves of different grades.

[0013] Preferably, the steaming module comprises a steaming bin and a steam supply module, the steaming bin is connected with the steam supply module, the steaming bin is provided with a gas outlet, the steaming bin is further provided with an openable and closable cover, and the steaming bin is connected with a driving motor for driving the steaming bin to rotate.

[0014] Preferably, the forming module comprises a forming container and a forming cylinder, the output end of the forming cylinder is connected with a pressing plate, and the pressing plate is movable to the forming container for pressing the tea leaves in the forming container into bricks, cakes or tea shapes.

[0015] Preferably, the application further comprises a control system, and the microwave fixation machine, the first rolling machine, the second rolling machine, the drying machine, the screening machine, the steaming module and the forming module are connected with the control system.

[0016] Compared with the prior art, the application has the following advantages: 1. The full-automatic processing production line of the application connects the microwave fixation machine, the first rolling machine, the second rolling machine, the drying machine, the screening machine, the steaming module, the forming module and the aging chamber in series to form the entire Liubao tea processing production line, so that the processing can be seamlessly connected in an automatic manner, the labor cost and manual intervention are reduced, and the production efficiency is high.

[0017] 2. The full-automatic processing production line of the application fixes the Liubao tea by the microwave fixation machine, so that the tea leaves can be quickly fixed, the oxidation enzyme activity in the fresh leaves is destroyed and passivated, the enzymatic oxidation of polyphenols is inhibited, part of the water is evaporated, and the tea leaves are softened for rolling.

[0018] 3. The first rolling machine of the application is provided with a plurality of first rolling containers, and the first rolling containers are driven to rotate by the first rotating frame, so that the plurality of first rolling containers respectively receive the tea leaves conveyed by the microwave conveying belt, the tea leaves are rolled in sequence, the well-rolled tea leaves are conveyed to the maturation bin for maturation first, and the tea leaves rolled last are conveyed to the maturation bin when the previous batch of tea leaves has been matured, so that the processing can be seamlessly connected.

[0019] 4. The second rolling machine of the application is the same as the first rolling machine, and is provided with a plurality of second rolling containers for batch rolling, which is convenient for subsequent batch drying.

[0020] 5. The screening machine of the present application can grade and remove impurities from tea, mix different batches and grades of rough tea to ensure the stability of quality and flavor, and separate coarse and fine, light and heavy, and remove impurities and yellow pieces through screening and winnowing. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. In all the drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0022] Figure 1 is a front view of a full-automatic processing production line; Figure 2 is a top view of a full-automatic processing production line; Figure 3 is a schematic view of a first rolling machine.

[0023] Figure 4 is a schematic view of a steaming module.

[0024] Figure 5 is a schematic view of a dryer.

[0025] Figure 6 is a schematic view of a fermentation bin and a first turnover device.

[0026] 1 is a microwave fixation machine, 2 is a first rolling machine, 21 is a first rotating frame, 22 is a first rolling container, 23 is a first driving cylinder, 24 is a rolling cover, 25 is a crank mechanism, 3 is a fermentation machine, 31 is a fermentation bin, 32 is a first turnover device, 4 is a second rolling machine, 5 is a dryer, 6 is a screening machine, 7 is a steaming module, and 8 is a tea feeder. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0029] In the description of the present application, the meaning of one or more is one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number. If the terms "first", "second", "third" are described, they are only for the purpose of description and for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict between them.

[0031] Before applying the full-automatic processing production line of Liupao tea provided in the embodiment, Liupao tea leaves need to be picked first, usually one bud two or three leaves or one bud three or four leaves are picked to ensure that the tea leaves have enough maturity to facilitate fermentation and form a mellow taste in the later period.

[0032] The processing technology of Liupao tea is as follows: Primary processing → picking → fixation → primary rubbing → pile smothering → re-rubbing → drying → rough tea; Refining → screening / picking stems → blending → roasting → steaming → pressing → aging → finished product (loose tea / brick tea / tea).

[0033] For example, Figures 1-6As shown, the full-automatic processing production line for the Liupao tea provided by the embodiment includes: a microwave fixation machine 1, which is used for fixation of picked tea leaves to stop enzyme activity and prevent excessive oxidation of chlorophyll; a first rolling machine 2, which is connected to the output end of the microwave fixation machine 1 through a first conveying belt, and is used for initial rolling of the tea leaves to break the cell walls of the tea leaves and promote exosmosis of tea juice; a second rolling machine 4, which is used for re-rolling of the tea leaves after rolling by the first rolling machine 2 to break the leaves again, uniform fermentation and promotion of exosmosis of tea juice; a dryer 5, which is used for drying of the re-rolled tea leaves to make the moisture content of the tea leaves ≤15%; a screening machine 6, which is used for removal of broken leaves, stem segments, dust, ropes and hairs in the dried tea leaves; a steaming module 7, which is used for softening of the screened tea leaves; a forming module, which is used for pressing the softened tea leaves into bricks, cakes or teardrop shapes; and an aging room, which is used for aging of the tea leaves pressed into bricks, cakes or teardrop shapes. The full-automatic processing production line of the embodiment connects the microwave fixation machine 1, the first rolling machine 2, the second rolling machine 4, the dryer 5, the screening machine 6, the steaming module 7, the forming module and the aging room together to form the entire Liupao tea processing production line, which can automatically process and reduce labor cost and manual intervention, and has high production efficiency.

[0034] It should be noted that the microwave fixation machine 1 itself has a conveying belt, so it can be directly conveyed to the next process without the need for additional conveying structure. The process between the first rolling machine 2 and the second rolling machine 4 also includes a pile, and the initial pile lasts for 45-70 days according to temperature, humidity and tea leaf condition. Even if the pile machine 3 is used to speed up the time, it still needs 20-50 days. Therefore, in order to continuously process tea leaves, multiple pile machines 3 can be arranged between the first rolling machine 2 and the second rolling machine 4 for batch pile. The first rolling machine 2 and the second rolling machine 4 are both provided with a structure that can directly convey the rolled tea leaves to the next process. For example, a conveying belt is arranged between the first rolling machine 2 and the pile machine 3 for conveying. After the pile, the pile machine 3 opens the pile bin 31, so that the internal tea leaves can fall onto the corresponding conveying belt and be conveyed to the second rolling machine 4 for re-rolling. The first rolling machine 2 and the second rolling machine 4 are both provided with multiple rolling structures for batch rolling of tea leaves. The dryer 5 continuously dries the re-rolled tea leaves to form rough tea for refining. The rough tea is removed from the tea leaves by the screening machine 6, and the tea leaves are classified. After classification, the tea leaves are re-piled, steamed and finally aged in the aging room. During the entire process, a corresponding conveying belt is arranged to realize automation.

[0035] The microwave fixation machine 1 comprises a microwave conveying belt, a support, a fixation bin and a microwave generating structure, the microwave conveying belt passes through the fixation bin, the support is fixed at the bottom of the fixation bin to support the fixation bin, and the microwave generating structure is installed on the fixation bin to form a microwave field; wherein the fixation bin is hollow inside and has an open structure at both ends, both ends of the microwave conveying belt extend outward from both ends of the fixation bin respectively, and the belt of the microwave conveying belt adopts a Teflon-coated glass fiber cloth or a metal mesh belt. Fixation is a key process in the processing of Liupao tea, and its main purpose is to rapidly destroy and passivate the oxidation enzyme activity in fresh leaves through high temperature, inhibit the enzymatic oxidation of polyphenols, evaporate part of the water, make the tea soft, facilitate subsequent rolling and forming, and form the unique color, aroma and taste of tea. Microwave fixation is to use microwaves with a frequency of 2450MHz or 915MHz to penetrate tea, so that the polar molecules such as water molecules in the tea undergo high-frequency and violent vibration and friction, thereby generating heat in an instant (a few seconds to tens of seconds) to rapidly and uniformly heat the tea from the inside, achieving the purpose of fixation. The microwave fixation machine 1 of the embodiment adopts a tunnel type microwave fixation machine 1, the microwave conveying belt penetrates the fixation bin, the tea leaves are directly placed on the microwave conveying belt by a tea leaf feeder 8 or manually, the tea leaves are conveyed by the microwave conveying belt to pass through the fixation bin, the microwave generating structure installed on the fixation bin forms a microwave field, and the tea leaves conveyed by the microwave conveying belt are rapidly fixed, completing the fixation process.

[0036] The first rolling machine 2 comprises a plurality of first rolling containers 22, the plurality of first rolling containers 22 are uniformly distributed, the plurality of first rolling containers 22 are connected through a first rotating frame 21, the first rotating frame 21 is connected with a first rotating motor, so that the plurality of first rolling containers 22 rotate with the first rotating frame 21, the top of each first rolling container 22 is provided with a first feeding port for receiving tea leaves after fixation from the microwave conveying belt; the bottom of each first rolling container 22 is provided with a first discharging port for discharging tea leaves after rolling, and the first discharging port is provided with a first bottom plate which can be opened and closed, one end of the first bottom plate is connected with the edge of the first discharging port through a hinge, and the other end of the first bottom plate is hinged with a first driving cylinder 23 for driving the first bottom plate to open and close relative to the first discharging port.

[0037] The purpose of rubbing and twisting is to destroy the cell structure of tea leaves, so that tea juice overflows and adheres to the surface, facilitating the infusion of the contents during brewing, and creating conditions for pile fermentation. The first rubbing and twisting container 22 and the second rubbing and twisting container are both existing disc-type rubbing and twisting machines, each including a rubbing and twisting barrel, a first bottom plate provided with raised ribs, and a rubbing and twisting cover 24 provided in the rubbing and twisting barrel and driven by a crank mechanism 25 to make horizontal rotary motion in the disc, the rubbing and twisting cover 24 being used to apply pressure to the tea leaves. The first rubbing and twisting container 22 and the second rubbing and twisting container of the present embodiment differ from existing disc-type rubbing and twisting machines in that the rubbing and twisting disc structure is different, the disc bottom is designed as a first bottom plate or a second bottom plate that can be opened and closed, and the first driving cylinder 23 and the second driving cylinder are used to drive the first bottom plate and the second bottom plate, respectively, to open relative to the first discharge port after rubbing and twisting is completed, so that the tea leaves after rubbing and twisting fall onto the pile conveyor belt.

[0038] The bottom of the first rubbing and twisting machine 2 is provided with a pile conveyor belt, and the end of the pile conveyor belt is provided with a pile bin 31; the pile bin 31 is connected with a first overturning device 32 to form a pile machine 3, and the first overturning device 32 is used to overturn the pile bin 31; one side of the pile bin 31 is provided with a heap bin, and the heap bin is connected with a second overturning device, and the second overturning device is used to overturn the heap bin. The process of pile fermentation is to stack the rubbed and twisted tea leaves together, control the humidity and temperature, and let the tea leaves undergo natural humid heat action and microbial fermentation (mainly the participation of beneficial bacteria such as yeast and aspergillus). Under the action of microorganisms, tea polyphenols, amino acids, sugars and other substances in tea leaves undergo complex transformation, the leaf color changes from green to yellow-brown, the astringent taste disappears, and a mellow aroma begins to appear. The pile bin 31 and the heap bin are both drum structures, and the first overturning device 32 and the second overturning device both adopt a motor and gear box structure, one end of the drum is connected with a corresponding gear, and the gear is engaged with a gear on the output shaft of the gear box.

[0039] The second rubbing and twisting machine 4 includes a plurality of second rubbing and twisting containers, the plurality of second rubbing and twisting containers are uniformly distributed, the plurality of second rubbing and twisting containers are connected through a second rotating frame, the second rotating frame is connected with a second rotating motor, so that the plurality of second rubbing and twisting containers rotate with the second rotating frame, the top of each second rubbing and twisting container is provided with a second inlet, and the second inlet is used to receive the tea leaves after pile fermentation from the heap bin; the bottom of each second rubbing and twisting container is provided with a second discharge port, and the second discharge port is used to remove the tea leaves after rubbing and twisting, and the second discharge port is provided with an openable and closable second bottom plate, one end of the second bottom plate is connected with the edge of the second discharge port through a hinge, and the other end of the second bottom plate is hinged with a second driving cylinder for driving the second bottom plate to open and close relative to the second discharge port.

[0040] The dryer 5 comprises a drying conveyor belt and a drying bin, the drying conveyor belt passes through the drying bin, one end of the drying conveyor belt is located below the second rolling machine 4 for receiving tea leaves after rolling; the drying bin dries the tea leaves conveyed on the drying conveyor belt by installing an electric heating structure, so that the moisture of the tea leaves is ≤15%. The dryer 5 of the present embodiment adopts an existing 6CH series medium-sized chain plate dryer 5, which can continuously dry tea leaves. It should be noted that since the conveying and drying efficiency of the dryer is low, and the tea leaves conveyed by the upstream process are fast, a single dryer cannot meet the requirements of rapid drying, and multiple dryers can be connected in series to achieve this.

[0041] In some embodiments, the tea leaves in the drying bin can also be dried by a hot air blower. Installing corresponding hot air blowers around and on the top of the drying bin can achieve this.

[0042] The screening machine 6 comprises an air separator and an electrostatic impurity remover, the feed inlet of the air separator is connected with the end of the drying conveyor belt for receiving tea leaves conveyed by the drying conveyor belt; the feed inlet of the electrostatic impurity remover is connected with the discharge outlet of the air separator for receiving tea leaves after sorting and grading, and the electrostatic impurity remover removes impurities from different grades of tea leaves. The air separator and the electrostatic impurity remover are both existing devices, and will not be described in detail here.

[0043] After the tea leaves are graded, they are subjected to pile fermentation again. The blended rough tea is sprayed with water to increase the moisture content, and then placed in a clean pile bin 31 to form a large pile, which is covered with linen or special paper to maintain temperature and humidity. During the entire fermentation period (usually lasting for 30-60 days), the pile temperature and humidity need to be strictly controlled, and the pile needs to be turned over regularly to ensure uniform fermentation. This process is the key to the formation of Liubao tea quality, significantly reducing the bitter and astringent tea polyphenols, generating theaflavins, thearubigins, etc., making the soup color red and thick, the taste mellow, and the unique "aged aroma" initially formed. The pile process can be applied to the pile bin 31 for the first pile and the turning bin, which can be turned over to the turning bin for turning over after a period of pile.

[0044] The steaming module 7 comprises a steaming bin and a steam supply module, the steaming bin is connected with the steam supply module, the steaming bin is provided with a gas outlet, the steaming bin is also provided with an openable and closable lid, and the steaming bin is connected with a driving motor for driving the steaming bin to rotate. After fermentation, the tea leaves are steamed soft by high-temperature steam. It can achieve: eliminating harmful bacteria that may be produced during the fermentation process. Soften the tea leaves for easy compression molding. High-temperature steam can further stimulate the aroma and internal substances of the tea leaves. It should be noted that in order to avoid the steam supply module from rotating with the steaming bin, the rotating shaft of the steaming bin can be hollow, and the steam pipeline can be extended from the rotating shaft. The steaming module 7 has the same problem as the dryer, which cannot effectively steam the continuously conveyed tea leaves, so several steaming bins are connected in series to achieve the steaming process of the tea leaves.

[0045] The forming module comprises a forming container and a forming cylinder, an output end of the forming cylinder is connected with a pressing plate, the pressing plate is movable to the forming container, and is used for pressing the tea in the forming container into a brick, a cake or a tea roll shape. The bottom of the forming container can also be provided with an openable and closable bottom plate like the first rubbing container 22 or the second rubbing container, so as to convey the pressed and formed tea brick or tea cake to the corresponding conveying belt and to the aging chamber for aging.

[0046] The aging chamber is used for allowing the tea to naturally and slowly ferment under suitable temperature and humidity conditions. During the aging process, the contents in the tea continue to slowly transform and aggregate, so that the taste becomes more mellow and soft, the aroma gradually transforms from the initial fermentation aroma into pure aging aroma, betel nut aroma or wood aroma, and the tea soup is more transparent. The so-called "the longer the aging time, the better the tea", is just due to this process.

[0047] The production line further comprises a control system, and the microwave fixation machine 1, the first rubbing machine 2, the second rubbing machine 4, the drying machine 5, the screening machine 6, the steaming module 7 and the forming module are all connected with the control system.

[0048] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A full-automatic processing production line of Liupao tea, characterized in that, The microwave fixation machine is used for fixation of picked tea leaves, so as to stop enzyme activity and prevent excessive oxidation of chlorophyll. The first rolling machine is connected with the output end of the microwave fixation machine through a first conveying belt, and is used for initial rolling of the tea leaves, destruction of cell walls of the tea leaves, and promotion of exosmosis of tea juice. The second rolling machine is used for re-rolling of the tea leaves after rolling by the first rolling machine, crushing of leaves, uniform fermentation, and promotion of exosmosis of tea juice. The drying machine is used for drying of the tea leaves after re-rolling, so that the moisture of the tea leaves is less than or equal to 15%. The screening machine is used for removal of broken leaves, stem segments, dust, ropes and hair in the tea leaves after drying. The steaming module is used for softening of the tea leaves after screening. The forming module is used for pressing of the tea leaves after softening into bricks, cakes or tea shapes. The aging room is used for aging of the tea leaves pressed into bricks, cakes or tea shapes. The microwave fixation machine comprises a microwave conveying belt, a support, a fixation bin and a microwave generating structure. The microwave conveying belt passes through the fixation bin. The support is fixed at the bottom of the fixation bin to support the fixation bin. The microwave generating structure is installed on the fixation bin to form a microwave field.

2. The full-automatic processing production line of Liupao tea according to claim 1, characterized in that, The inside of the fixation bin is hollow, and both ends are open structures. Both ends of the microwave conveying belt extend outward from both ends of the fixation bin. The belt of the microwave conveying belt adopts a Teflon coated glass fiber cloth or a metal mesh belt. The first rolling machine comprises a plurality of first rolling containers. The plurality of first rolling containers are uniformly distributed and connected through a first rotating frame. The first rotating frame is connected with a first rotating motor, so that the plurality of first rolling containers rotate with the first rotating frame. The top of each first rolling container is provided with a first feeding port for receiving the tea leaves after fixation from the microwave conveying belt. The bottom of each first rolling container is provided with a first discharging port for discharging the tea leaves after rolling. The first discharging port is provided with a first bottom plate which can be opened and closed. One end of the first bottom plate is connected with the edge of the first discharging port through a hinge. The other end of the first bottom plate is hingedly connected with a first driving cylinder for driving the first bottom plate to open and close relative to the first discharging port.

3. The full-automatic processing production line of Liupao tea according to claim 2, characterized in that, The bottom of the first rolling machine is provided with a compost conveying belt, and the end of the compost conveying belt is provided with a compost bin. The compost bin is connected with a first overturning device for overturning the compost bin. One side of the compost bin is provided with a heap turning bin. The heap turning bin is connected with a second overturning device for overturning the heap turning bin.

4. The full-automatic processing production line of Liupao tea according to claim 3, characterized in that, ​ 5. The full-automatic processing production line of Liupao tea according to claim 4, characterized in that, The second rubbing and twisting machine comprises a plurality of second rubbing and twisting containers which are uniformly distributed and connected through a second rotating frame. The second rotating frame is connected with a second rotating motor, so that the plurality of second rubbing and twisting containers rotate with the second rotating frame. The top of each second rubbing and twisting container is provided with a second feeding port for receiving tea leaves after the tea heap from the pile bin. The bottom of each second rubbing and twisting container is provided with a second discharging port for removing tea leaves after rubbing and twisting. The second discharging port is provided with an openable and closable second bottom plate. One end of the second bottom plate is connected with the edge of the second discharging port through a hinge, and the other end of the second bottom plate is hingedly connected with a second driving cylinder for driving the second bottom plate to open and close relative to the second discharging port.

6. The full-automatic processing production line of Liupao tea according to claim 5, characterized in that, The dryer comprises a drying conveyor belt and a drying bin. The drying conveyor belt passes through the drying bin. One end of the drying conveyor belt is located below the second rubbing and twisting machine for receiving tea leaves after rubbing and twisting. The drying bin dries tea leaves conveyed on the drying conveyor belt by electric heating, so that the moisture content of the tea leaves is ≤15%.

7. The full-automatic processing production line of Liupao tea according to claim 6, characterized in that, The screening machine comprises an air separator and an electrostatic impurity removal machine. The feeding port of the air separator is connected with the end of the drying conveyor belt for receiving tea leaves conveyed by the drying conveyor belt. The feeding port of the electrostatic impurity removal machine is connected with the discharging port of the air separator for receiving tea leaves after sorting and grading, and the electrostatic impurity removal machine removes impurities from tea leaves of different grades.

8. The full-automatic processing production line of Liupao tea according to claim 7, characterized in that, The steaming module comprises a steaming bin and a steam supply module. The steaming bin is connected with the steam supply module. The steaming bin is provided with a gas outlet. The steaming bin is also provided with an openable and closable cover. The steaming bin is connected with a driving motor for driving the steaming bin to rotate.

9. The full-automatic processing production line of Liupao tea according to claim 8, characterized in that, The forming module comprises a forming container and a forming cylinder. The output end of the forming cylinder is connected with a pressing plate which is movable towards the forming container to press tea leaves in the forming container into bricks, cakes or tea shapes.

10. The full-automatic processing production line of Liupao tea according to claim 1, characterized in that, The control system is connected with the microwave fixation machine, the first rubbing and twisting machine, the second rubbing and twisting machine, the dryer, the screening machine, the steaming module and the forming module.

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