Primary processing production line for Duyun Maojian tea

Abstract

The utility model belongs to the technical field of tea preparation, and particularly relates to a Duyun Maojian tea primary processing production line which comprises a screening module, a fixation module, a rolling module, a shaping module and a fragrance extraction module, the modules are sequentially connected through a conveying device, and the conveying device can transfer tea processed by the module to the next module; a humidity adjusting module is arranged between the fixation module and the rolling module, and the humidity adjusting module can cool and adjust the humidity of the tea leaves; by arranging the humidifying module, the tea leaves subjected to fixation can be humidified and humidified, the situation that the tea leaves are relatively dry, lack of necessary moisture and softness, easy to break in the next rolling process and influence the completeness of the tea leaves is avoided, and meanwhile, moisture supplement also plays an important role in improving the quality and taste of the tea leaves.

Description

Technical Field

[0001] The invention belongs to the technical field of tea preparation, and in particular relates to a primary processing production line for Duyun Maojian tea. Background Art

[0002] Duyun Maojian tea is thin, round, smooth, straight, and has many white hairs in its shape, and its color is emerald green. After brewing, its fragrance is high and lasting, its flavor is rich and mellow, and its aftertaste is sweet and refreshing. Its dry tea color is green with yellow, its soup color is green with yellow, and its leaf bottom is green with yellow, with the characteristics of "three greens and yellows". In the prior art, in the production of Duyun Maojian tea, tea leaves are successively subjected to the processes such as fixing and rolling. For example, the Chinese invention patent CN116420795A discloses a manual processing technology for Duyun Maojian tea. Tea leaves are successively subjected to fixing and rolling. After fixing, tea leaves are directly rolled after cooling. After fixing, tea leaves are dried after cooling, lacking necessary moisture and softness. Subsequently, direct rolling is easily broken. The dry state of tea leaves may affect the conversion and release of their contents, thereby affecting the quality such as the aroma and flavor of tea leaves. Summary of the Invention

[0003] The purpose of the present invention is to provide a Duyun Maojian tea primary processing production line in response to the above-mentioned technical problems. The setting of the humidity control module can adjust the humidity of the tea leaves after withering and increase the humidity to prevent the tea leaves from being dry and lacking the necessary moisture and softness, which makes them easy to break during the next rolling process and affects the integrity of the tea leaves. At the same time, the replenishment of moisture also plays an important role in improving the quality and taste of the tea leaves.

[0004] In view of this, the present invention provides a Duyun Maojian tea primary processing production line, including a screening module, a withering module, a rolling module, a shaping module and a fragrance enhancement module. The modules are sequentially connected by a conveying device. The conveying device can transfer the tea leaves that have completed processing in the module to the next module. A humidity control module is provided between the withering module and the rolling module, and the humidity control module can cool and adjust the humidity of the tea leaves.

[0005] In this technical solution, the conveying device is a flat conveyor or an inclined conveyor, which sequentially conveys and connects each module in the production line. The screening module is a tea sorting machine, which puts tea leaves of the same or adjacent batches picked at the same time into the tea sorting machine and grades and screens the tea leaves according to the size and tenderness of the tea leaves. Tea leaves with higher tenderness usually have better taste and aroma. For example, the raw tea leaves of special-grade Maojian are uniform and single-teeth, while the raw tea leaves of first-grade Maojian are one tooth and one leaf, and the raw tea leaves of second-grade Maojian are one tooth and one or two leaves. The rolling module is selected as a tea rolling machine. During the rolling process, the cell walls of the tea leaves are broken, which causes the tea juice to overflow and adhere to the surface of the tea leaves, laying the foundation for subsequent shaping, aroma enhancement and other processes, and also promoting the transformation of chemical components in the tea leaves, such as the oxidation and polymerization of polyphenols, which helps to improve the quality and taste of the tea leaves. It can also play a preliminary plastic role. The shaping module can adopt a series-arranged tea lifter, a shaping machine or a strip conditioning machine to play the role of showing the tea leaves and shaping. Showing the tea leaves is to make the white hairs (tiny white hairs) on the surface of the tea leaves more visible, and the white hairs on the surface of the tea leaves are more prominent, making the tea leaves look more tender and high-end, which is especially important for famous teas such as Duyun Maojian. The main function of shaping is to shape the appearance of the tea leaves to meet specific standards or consumers' aesthetic needs. The aroma module is a drying and aroma machine, which further dries the tea leaves through high-temperature baking, while stimulating the aroma of the tea leaves, improving the quality and taste of the tea leaves, and finally cooling the tea. Compared with pure manual tea making and semi-manual and semi-mechanical tea making, the present invention avoids interference from human factors and avoids the lack of close connection between mechanical equipment and manual operation, which can easily lead to a bottleneck effect on the production line and affect the overall production efficiency.

[0006] In the above technical solution, further, the humidity control module includes a cooling module and a moisture recovery module which are arranged in sequence.

[0007] In the above technical solution, further, the rehumidification module should maintain the indoor temperature stable between 20°C and 25°C during the rehumidification process, and at the same time control the relative humidity of the tea surface at 65%-75%.

[0008] In the above technical solution, further, the kneading module includes a primary kneading machine and a secondary kneading machine arranged in series, the feed end of the primary kneading machine is connected to the fixing module through a conveying device, and the discharge end of the secondary kneading machine is connected to the shaping module through a conveying device.

[0009] In the above technical solution, further, a dehydration module is provided between the primary kneading machine and the secondary kneading machine.

[0010] In the above technical solution, further, the shaping module includes a hair-displaying module and a shaping module which are connected in sequence in the transmission direction of the conveying device, the hair-displaying module and the re-kneading machine are connected through the conveying device, the hair-displaying module and the shaping module are connected through the conveying device, and the shaping module and the aroma module are connected through the conveying device.

[0011] In the above technical solution, further, a humidity control module is provided after the dehydration module and the display module.

[0012] In the above technical solution, it further includes a screening device. There are several screening devices, which are connected and arranged in the production line. They are respectively arranged between the withering module, the rolling module and the shaping module, and after the aroma module. The screening device can effectively remove tea stems and fragments generated during tea processing.

[0013] In the above technical solution, further, a sample analysis device is included. The sample sampling device includes a robotic arm for sampling each module and a detection device. The detection device detects the samples sampled by the robotic arm.

[0014] The beneficial effects of the present invention are:

[0015] 1. The setting of the humidity control module can adjust the humidity of the tea leaves after withering, and increase the humidity to prevent the tea leaves from being too dry and lacking the necessary moisture and softness, which will easily break during the next rolling process and affect the integrity of the tea leaves. At the same time, the replenishment of moisture also plays an important role in improving the quality and taste of the tea leaves;

[0016] 2. The cooling module can be a fan, air conditioner, etc., which is used to quickly reduce the temperature of tea leaves during large-scale production. It should be noted that mechanical cooling should avoid blowing directly onto the tea leaves to avoid excessive evaporation of moisture on the surface of the tea leaves. Natural cooling can also be used. Spread the withered tea leaves in a clean bamboo dustpan or a large bamboo winnowing basket, and use natural wind or indoor ventilation conditions for cooling. During the cooling process, it should be ensured that the temperature of the tea leaves drops rapidly to room temperature or slightly above room temperature (about 20℃-25℃); the rehumidification module uses a humidifier to spray an appropriate amount of water mist on the surface of the tea leaves to increase the humidity of the tea leaves. The humidity and spray volume of the humidifier should be adjusted according to the actual situation of the tea leaves. During the rehumidification process, the indoor temperature should be kept stable between 20℃-25℃. At the same time, the relative humidity on the surface of the tea leaves should be controlled at about 65%-75% by a humidifier or natural rehumidification method. The moisture adjustment module adjusts the moisture content to facilitate the processing of the next module;

[0017] 3. It also includes a sample analysis device. The sampling device includes a robotic arm that takes samples from each module and a detection device. The detection device tests the samples taken by the robotic arm. The detection device in each module can be a multi-device detection device, corresponding to a detection device that detects a specific data point required for the tea leaves. By sampling and retaining tea leaves from each module and each link, the quality changes of the tea leaves during the processing process can be monitored in real time, ensuring the stable quality of each batch of tea. If a quality problem is found in the tea leaves, the sample analysis device can be used to quickly trace it back to the specific production link, allowing timely adjustments and improvements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a flow chart of the production process of the present invention.

[0020] The marks in the figure are:

[0021] 1. Fixing module; 2. Rolling module; 21. Primary rolling machine; 22. Secondary rolling machine; 23. Dehydration module; 3. Shaping module; 31. Hair-revealing module; 32. Shaping module; 4. Fragrance module; 5. Humidity control module; 51. Cooling module; 52. Moisture regain module. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0023] In the description of this application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0024] It should be noted that the terms "first," "second," etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and that the objects distinguished by "first," "second," etc. are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0025] It should be noted that, in the description of this application, the directions or positional relationships indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional terms do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional terms "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0026] It should be noted that, in the present application, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0027] First embodiment:

[0028] like Figure 1 and Figure 2As shown, this embodiment provides a Duyun Maojian tea primary processing production line, including a screening module, a withering module 1, a rolling module 2, a shaping module 3 and a fragrance module 4. The modules are sequentially connected by a conveying device, and the conveying device can transfer the tea leaves that have completed the processing in the module to the next module. A humidity control module 5 is provided between the withering module 1 and the rolling module 2, and the humidity control module 5 can cool and humidity control the tea leaves.

[0029] The conveying device is a flat conveyor or an inclined conveyor, which sequentially conveys and connects the modules in the production line. The screening module (not shown) is a tea sorting machine, which puts tea leaves of the same or adjacent batches picked at the time into the tea sorting machine and grades and screens the tea leaves according to the size and tenderness of the tea leaves. Tea leaves with higher tenderness usually have better taste and aroma. For example, the raw tea leaves of special-grade Maojian are uniform and full of single teeth, while the raw tea leaves of first-grade Maojian are one tooth and one leaf, and the raw tea leaves of second-grade Maojian are one tooth and one or two leaves; the rolling module 2 is selected as a tea rolling machine. During the rolling process, the cell wall of the tea leaves is broken, which causes the tea juice to overflow and adhere to the surface of the tea leaves, laying the foundation for subsequent shaping, aroma enhancement and other processes, and also promoting the quality of the tea. The transformation of chemical composition in leaf, such as the oxidation and polymerization of polyphenols, contributes to improving the quality and mouthfeel of tea leaves, and also can play a preliminary plastic effect, shaping module 3 can adopt the lifting millimeter machine, shaping machine or conditioning strip machine arranged in series, play the effect of showing hair and making shape, showing hair is to make the white hair (tiny white fuzz) on tea surface more reveal, the white hair on tea surface is more outstanding, makes tea leaves look more fresh and tender, high-grade, this is particularly important for famous and high-quality tea such as Duyun Maojian, the main function of making shape is to shape the appearance of tea leaves, make it meet specific standard or the aesthetic demand of consumer, aroma module 4 is a drying aroma machine, and tea leaves are further dried by high temperature baking, stimulate the fragrance of tea leaves simultaneously, improve the quality and mouthfeel of tea leaves, finally cool down and produce tea. The setting of humidity control module 5, can carry out humidity control to the tea leaves after fixing, carry out humidification, avoid tea leaves from being dry, lack necessary moisture and pliability, easily broken in the kneading process of next step, affect the integrity of tea leaves, the supplement of moisture simultaneously, also has an important role for improving the quality and mouthfeel of tea leaves.

[0030] The humidity control module 5 includes a cooling module 51 and a rehumidification module 52. The rehumidification module 52 should maintain the indoor temperature stable between 20°C and 25°C during the rehumidification process, and control the relative humidity of the tea surface at 65%-75%.

[0031] The cooling module 51 can be a fan, air conditioner, etc., which is used to quickly reduce the temperature of the tea leaves during large-scale production. It should be noted that during mechanical cooling, it should be avoided to blow directly onto the tea leaves to prevent the moisture on the tea leaves from evaporating too quickly. Natural cooling can also be used. The tea leaves after withering are spread out in a clean bamboo dustpan or a large bamboo winnowing basket and cooled by natural wind or indoor ventilation conditions. During the cooling process, it should be ensured that the temperature of the tea leaves drops quickly to room temperature or slightly above room temperature (approximately 20°C-25°C); the rehumidification module 52 uses a humidifier to spray an appropriate amount of water mist on the surface of the tea leaves to increase the humidity of the tea leaves. The humidity and spray volume of the humidifier should be adjusted according to the actual situation of the tea leaves. During the rehumidification process, the indoor temperature should be kept stable between 20°C-25°C. At the same time, the relative humidity on the surface of the tea leaves should be controlled at around 65%-75% by a humidifier or natural rehumidification method. The moisture adjustment module 5 adjusts the moisture content to facilitate the processing of the next module.

[0032] The kneading module 2 includes a primary kneading machine 21 and a secondary kneading machine 22 arranged in series. The feed end of the primary kneading machine 21 is connected to the fixing module 1 through a conveyor, and the discharge end of the secondary kneading machine 22 is connected to the shaping module 3 through a conveyor. A dehydration module 23 is provided between the primary kneading machine 21 and the secondary kneading machine 22.

[0033] The primary kneading machine 21 and the secondary kneading machine 22 are both tea rolling machines, which divide the kneading into two steps: primary kneading and secondary kneading, and a dehydration module 23 is set in between. The dehydration module 23 is a drying equipment, and the temperature is set to 80-120°C. This temperature range can effectively remove excess moisture in the tea leaves, while avoiding excessively high temperatures that lead to a decline in the quality of the tea leaves. The tea leaves can be processed step by step in the order of primary kneading, dehydration, and secondary kneading. Each step lays the foundation for the next step. This step-by-step processing method helps the tea leaves better absorb moisture and heat, undergo sufficient chemical reactions, and thus maximize the quality and taste of the tea leaves.

[0034] The shaping module 3 includes a hair-displaying module 31 and a shaping module 32 which are connected in sequence in the transmission direction of the conveying device. The hair-displaying module 31 and the re-kneading machine 22 are connected through the conveying device, the hair-displaying module 31 and the shaping module 32 are connected through the conveying device, and the shaping module 32 and the aroma module 4 are connected through the conveying device.

[0035] The shaping module 3 can adopt a series-arranged tea leaf lifting machine, a shaping machine or a strip conditioning machine to play the role of showing the tea leaf hairs and shaping. Showing the tea leaf hairs makes the white hairs (fine white hairs) on the surface of the tea leaves more visible, and the white hairs on the surface of the tea leaves are more prominent, making the tea leaves look fresher and more upscale, which is especially important for famous teas such as Duyun Maojian. The main function of shaping is to shape the appearance of the tea leaves so that it meets specific standards or the aesthetic needs of consumers.

[0036] A humidity control module 5 is located after both the dehydration module 23 and the tea leaf display module 31. This module comprises a cooling module 51 and a moisture regeneration module 52, which are sequentially arranged. The tea leaves passing through the humidity control module 5 are cooled and moisture-controlled. The humidity control module 5 performs the same function as the humidity control module 5 after the withering module 1: it provides timely cooling and moisture control for the tea leaves, preventing them from drying out and becoming easily broken during processing. This also plays an important role in improving the quality and taste of the tea leaves.

[0037] It also includes a screening device, and there are several screening devices, which are connected and arranged in the production line. They are respectively arranged between the withering module 1, the rolling module 2 and the shaping module 3, and after the aroma module 4. The screening device can effectively remove tea stems and fragments generated during tea processing.

[0038] The screening device (not shown) can be a linear conveying vibrating screen. The tea leaves move from the surface of the screen under the operation of the vibrating motor, and the tea stems and fragments fall from the mesh of the screen. There are multiple devices in total, which are respectively arranged in several modules to remove the tea stems and fragments in time to avoid the tea stems and fragments produced by the previous module being brought into the next module for invalid processing, which may even affect the processing of the complete tea leaves.

[0039] It also includes a sample analysis device (not shown). The sample sampling device includes a robotic arm for sampling each module and a detection device. The detection device detects the samples sampled by the robotic arm.

[0040] The detection device of each module may not be a single detection device, and may be a detection device that detects a certain data required for tea. By sampling and retaining tea in each link of each module, the quality changes of tea in the processing process can be monitored in real time to ensure the stable quality of each batch of tea. Once a quality problem of tea is found, it can be quickly traced back to the specific production link through the sample analysis device, and timely measures can be taken to adjust and improve it.

[0041] The above production equipment are all existing equipment and can be purchased through legal channels. They can be connected through conveyor lines depending on the size of the site.

[0042] The production process of the above-mentioned Duyun Maojian tea primary processing production line also includes the following steps:

[0043] Step 1: Screening: Classify and screen the tea leaves according to leaf size, tenderness, and picking time;

[0044] Step 2: Fixing the tea leaves. The tea leaves of the same batch after the above grading and screening are put into the drum fixing machine through the conveying device for fixing. The temperature of the drum fixing machine is set between 120 and 130 degrees Celsius.

[0045] Step 3: Cooling and rehydration: The tea leaves that have completed the fixation are cooled in the cooling module 51. A mechanical cooling chamber is used to avoid blowing the tea leaves directly. The cooled tea leaves are then sent to the rehydration module 52 for replenishing moisture.

[0046] Step 4: rolling, the tea leaves are rolled and rolled in sequence, with a humidity control module 5 provided between the first rolling and the second rolling. The first rolling destroys part of the cell wall of the tea leaves by rolling to allow the tea juice to leach out, and the second rolling further rolls the tea leaves into shape, making the tea leaves more compact.

[0047] Step 5: Shaping. The rolled tea leaves are sequentially exposed to the hairs and shaped. A humidity control module 5 is provided between the exposure and shaping processes. The humidity control module 5 adjusts and balances the moisture content of the tea leaves. The exposure of the hairs can make the fine hairs (i.e., white hairs) on the surface of the tea leaves stand upright, increasing the silvery-white luster of the tea leaves. Through the shaping process, the tea leaves can be molded into specific strips. The humidity control module 5 adjusts the moisture content and provides a buffer period between the exposure module 31 and the shaping module 32.

[0048] Step 6: Drying and aroma enhancement. Finally, the tea leaves are transported into the aroma enhancement machine for drying and aroma enhancement. The temperature of the aroma enhancement machine is set between 80 and 120 degrees Celsius.

[0049] Steps one to ten are all provided with sampling and analysis steps to take samples for retention and perform data analysis on the samples.

[0050] During the rehumidification process in step 3, the temperature is maintained at 20-25° C., and the relative humidity on the surface of the tea leaves is controlled between 65% and 75% by the rehumidification module 52 .

[0051] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A Duyun Maojian tea primary processing production line, characterized in that: The invention comprises a screening module, a tea-fixing module (1), a rolling module (2), a shaping module (3) and a fragrance-enhancing module (4); the modules are sequentially connected by a conveying device, and the conveying device can transfer tea leaves processed in a module to the next module; a humidity control module (5) is provided between the tea-fixing module (1) and the rolling module (2); and the humidity control module (5) can cool and adjust the humidity of the tea leaves.

2. A Duyun Maojian tea primary processing production line according to claim 1, characterized in that: The humidity control module (5) comprises a cooling module (51) and a moisture recovery module (52) which are arranged in sequence.

3. A Duyun Maojian tea primary processing production line according to claim 2, characterized in that: The rehumidification module (52) should maintain the indoor temperature stable between 20°C and 25°C during the rehumidification process, and at the same time control the relative humidity of the tea surface between 65% and 75%.

4. A Duyun Maojian tea primary processing production line according to any one of claims 1-3, characterized in that: The kneading module (2) comprises a primary kneading machine (21) and a secondary kneading machine (22) arranged in series, the feed end of the primary kneading machine (21) and the fixing module (1) are connected via a conveying device, and the discharge end of the secondary kneading machine (22) and the shaping module (3) are connected via a conveying device.

5. A Duyun Maojian tea primary processing production line according to claim 4, characterized in that: A dehydration module (23) is provided between the primary kneading machine (21) and the secondary kneading machine (22).

6. A Duyun Maojian tea primary processing production line according to claim 5, characterized in that: The shaping module (3) comprises a hair-displaying module (31) and a shaping module (32) which are sequentially connected in the transmission direction of a conveying device; the hair-displaying module (31) and the re-kneading machine (22) are connected via the conveying device; the hair-displaying module (31) and the shaping module (32) are connected via the conveying device; and the shaping module (32) and the aroma module (4) are connected via the conveying device.

7. A Duyun Maojian tea primary processing production line according to claim 6, characterized in that: A humidity control module (5) is provided behind the dehydration module (23) and the display module (31).

8. A Duyun Maojian tea primary processing production line according to any one of claims 1 and 7, characterized in that: The invention also includes a screening device. There are several screening devices connected and arranged in the production line. They are respectively arranged between the withering module (1), the rolling module (2) and the shaping module (3), and after the aroma module (4). The screening devices can effectively remove tea stems and fragments generated during tea processing.

9. A Duyun Maojian tea primary processing production line according to any one of claims 1 and 7, characterized in that: It also includes a sample analysis device. The sample sampling device includes a mechanical arm for sampling each module and a detection device. The detection device detects the samples sampled by the mechanical arm.

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