A traditional Liubao tea pile-stuffing production line and pile-stuffing process

Abstract

The invention discloses a traditional Liubao tea pile-stuffing production line and a pile-stuffing process. The production line includes a pile unit for stacking tea materials, which includes a material frame tray and a pile-stuffing material frame that can be detachably fixed in the material frame tray; at least one pile-stuffing chamber for holding the pile unit, which is provided with temperature control, humidity and oxygen content regulating equipment; a transmission line for transmitting the pile unit and transferring the pile unit into / out of the pile-stuffing chamber; a mixing and loading machine located at the beginning of the transmission line, which is used to stir and fill the tea materials into the pile unit; and a flattening mechanism located at the rear end of the mixing and loading machine, which flattens the tea materials inside the pile unit from above to a preset thickness. The pile-stuffing process performed in the production line can stabilize and improve the effect of tea pile-stuffing by accurately controlling parameters such as the size, thickness, looseness, temperature, humidity, oxygen content, and frequency of turning the pile of tea. The Liubao tea produced by pile-stuffing has the quality of uniform black-brown appearance, bright orange-red soup color, pure aroma, and rich taste.

Description

Technical Field

[0001] The invention belongs to the technical field of tea processing, and in particular relates to a traditional Liubao tea pile-stuffing production line and a pile-stuffing process. Background Art

[0002] Liubao tea is a traditional famous tea unique to Guangxi, with a long history of production and drinking. It has been approved as a national geographical indication product and belongs to the category of black tea. Liubao tea not only has rich functional ingredients and good health benefits, but also gives people a sensory experience of "red, strong, aged and mellow". It is increasingly favored by consumers, and the scale of the industry is growing.

[0003] After a long history of development, Liubao tea can be divided into traditional Liubao tea and modern Liubao tea according to different production processes. The flavor characteristics formed by the two tea products are unique and have their own advantages. Traditional Liubao tea is also called Liubao tea raw tea, which can be sold directly as finished tea or further processed into modern Liubao tea. Therefore, it is particularly important to stabilize and improve the quality of this type of tea products.

[0004] With fresh tea leaves as raw materials, traditional Liubao tea can be prepared through processes such as withering, initial kneading, pile-stuffing, re-kneading, and drying. Among them, "pile-stuffing" is the key process in the formation of the quality of this type of tea products. Appropriate pile-stuffing treatment can make the finished tea have excellent sensory quality characteristics such as uniform black-brown appearance, bright orange-red soup color, pure aroma, floral fragrance with aged fragrance, rich taste, and yellow-brown leaves. There are many factors in the pile-stuffing process that will affect the actual pile-stuffing effect. A good and stable pile-stuffing effect requires more standardized and standardized tea pile-stuffing equipment and processes to achieve. At present, the research on the pile-stuffing process in the production process of traditional Liubao tea is still relatively backward, which is an important factor causing the uneven quality of this type of tea products, unstable quality, and lack of hygiene guarantee, which greatly restricts the standardized production of traditional Liubao tea and the maximization of industrial benefits.

[0005] The problems existing in the prior art are as follows: 1. The key process parameters of the "stuffing" process are still unclear. In the current production practice, the process is mostly operated based on experience. The stuffing environment and turning the pile are easily improperly controlled, resulting in the product having an abnormal and stuffy aroma, a dull soup color, a bitter or less mellow taste, etc., and the quality and uniformity of the finished tea cannot be guaranteed; 2. Although the existing tea stuffing equipment can realize automatic feeding and unloading of tea and turning of the pile, thereby improving production efficiency, it is difficult to control the size, thickness and looseness of the tea pile in the equipment during the feeding and turning processes, and turning the pile is not easy to be uniform. The stacking and stuffing environment in the equipment is not properly controlled, which will also lead to inconsistent stacking and stuffing effects of different tea piles; 3. The interior of the existing tea stacking and stuffing equipment is not easy to clean. Frequent cleaning will greatly increase labor costs, while infrequent cleaning of the interior will lead to the breeding of microorganisms and the problem of unguaranteed hygiene, which will reduce the quality of tea; 4. At present, some production companies directly stack and stuff on a special hardened floor or stack and stuff in frames in a stacking and stuffing room. Although the stacking amount and thickness of the tea pile can be controlled manually, manual turning of the pile will result in high labor intensity, unguaranteed hygiene, and difficulty in controlling accuracy.

[0006] Therefore, how to improve and stabilize the quality of traditional Liubao tea while improving the production efficiency of the pile-steaming process has become a technical problem that needs to be urgently solved in this field. Summary of the invention

[0007] The purpose of the present invention is to provide a traditional Liubao tea pile-stuffing production line and pile-stuffing process to solve the problems existing in the above-mentioned prior art.

[0008] To achieve the above object, in one aspect, the present invention provides a traditional Liubao tea pile-steeping production line, comprising:

[0009] A stacking unit, used for stacking tea materials, the stacking unit comprising a material frame tray and a stacking frame detachably fixed in the material frame tray;

[0010] At least one stacking chamber, used to contain the stacking unit, wherein the stacking chamber is provided with a temperature control device and a humidity adjustment device;

[0011] A conveying line, used for transmitting the stacking unit and transferring the stacking unit into / out of the stacking chamber;

[0012] A mixing and loading machine, located at the beginning of the conveying line, for mixing and filling tea material into the stacking unit;

[0013] The flattening mechanism is located at the rear end of the mixing and loading machine and flattens the tea material inside the stacking unit to a preset thickness from above the stacking unit.

[0014] Preferably, the above-mentioned traditional process Liubao tea pile-stuffing production line also includes a material pouring mechanism, which includes a top slide fixedly arranged above the end of the conveying line, a sliding mechanism horizontally slidably connected to the top slide, a first telescopic manipulator fixedly connected to the bottom of the sliding mechanism, and a second telescopic manipulator slidably connected to the bottom of the sliding mechanism, the first telescopic manipulator and the second telescopic manipulator are connected by a lead screw, and the ends of the first telescopic manipulator and the second telescopic manipulator are fixedly connected with clamping shafts facing each other, and one of the clamping shafts is transmission-connected to a rotating motor; correspondingly, connecting shaft heads cooperating with the clamping shafts are fixedly connected on both sides of the pile-stuffing frame.

[0015] Preferably, the bottom plate and the side plates of the material stacking frame are grid-shaped air-permeable plates, and a gap is left between the bottom plate of the material stacking frame and the material frame tray.

[0016] Preferably, the inner length, width and height of the stacking material frame are 100 cm×50 cm×40 cm.

[0017] Preferably, a temperature sensor and a humidity sensor are provided in the stack stuffing chamber, and an indicator screen for displaying the monitoring values ​​of the temperature sensor and the humidity sensor is provided outside the stack stuffing chamber.

[0018] Preferably, oxygenation equipment and an oxygen content sensor are provided in the stack chamber.

[0019] In another aspect, the present invention provides a traditional Liubao tea pile-stewing process, which is performed by the above-mentioned traditional Liubao tea pile-stewing production line, comprising the following steps:

[0020] Step S1, weighing a preset weight of tea leaves processed in the previous process;

[0021] Step S2, loading the tea leaves into a stacking frame and flattening the tea leaves into a tea pile of a preset thickness;

[0022] Step S3, transferring the tea leaves into a stacking chamber for a stacking and stuffing, and stacking and stuffing for 3 to 4 hours in an environment with a temperature of 40 to 45° C., a humidity of 70 to 80%, and an oxygen content of 21 to 24%;

[0023] Step S4, turning over the tea leaves after stacking and steaming, reloading them into the stacking and steaming frame, and flattening them to a preset thickness;

[0024] Step S5, re-enter the previous stacking chamber, and maintain the temperature, humidity and oxygen content of the previous stacking chamber, and continue the secondary stacking chamber for 3 to 4 hours;

[0025] Step S6, repeat step S4;

[0026] Step S7, transfer to another stacking chamber for three stacking and stuffing, and stack for 3 to 4 hours in an environment with a temperature of 40 to 45° C., a humidity of 60 to 70%, and an oxygen content of 21 to 24%;

[0027] Step S8, repeat step S4;

[0028] Step S9, repeat step S5 to complete four stacking and stuffing;

[0029] Step S10, repeat step S4;

[0030] Step S11, transfer to another stacking chamber for five times of stacking, and stack for 3 to 4 hours in an environment with a temperature of 40 to 45° C., a humidity of 50 to 60%, and an oxygen content of 21 to 24%;

[0031] Step S12, repeat step S4;

[0032] Step S13, repeat step S5 to complete six times of stacking;

[0033] Step S14: Complete the stacking and proceed to the next processing step.

[0034] Preferably, in step S1 to step S2, 180 kg of tea leaves processed in the previous process are weighed, and the tea leaves in the stacking frame are flattened into a tea pile with a length, width and height of 100 cm×50 x m×40 cm.

[0035] Compared with the prior art, the traditional Liubao tea pile-stuffing production line and pile-stuffing process of the present invention have the following technical effects:

[0036] 1. The traditional Liubao tea pile-stuffing production line of the present invention can automatically load and unload materials and turn the pile, ensuring production efficiency. After automatic feeding and turning, the size, thickness and looseness of each tea pile can be better controlled. The pile-stuffing chamber can accurately control the temperature, humidity and oxygen content, thereby achieving more accurate control of the pile-stuffing reaction process and significantly improving the uniformity of the tea pile-stuffing effect.

[0037] 2. The traditional Liubao tea pile-steeping production line of the present invention does not need to be cleaned frequently. It is more convenient to clean the pile unit. The side panels and bottom of the pile unit are detachable and washable to avoid the growth of microorganisms, improve production efficiency, and ensure the quality and safety of tea after pile-steeping.

[0038] 3. The traditional Liubao tea pile-stuffing process of the present invention can avoid the situation that the traditional Liubao tea products have improper aroma, dull soup color, bitter taste or lack of mellowness and refreshing due to poor process control, by effectively controlling many factors such as oxygen supply, temperature, humidity, pile turning frequency, tea pile thickness, etc., and can better improve and stabilize the quality of traditional Liubao tea. The obtained finished tea has excellent sensory quality characteristics such as uniform dark brown appearance, bright orange-red soup color, pure aroma, floral fragrance with aged fragrance, rich taste, yellow-brown leaf bottom, etc. More precise control of the pile-stuffing process improves product quality and consistency, and is more convenient to realize the standardized production of the traditional Liubao tea processing pile-stuffing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0040] Figure 1 The structure of the stacking production line of Example 1 of the present invention is shown in FIG. Figure 1 ;

[0041] Figure 2 The structure of the stacking production line of Example 1 of the present invention is shown in FIG. Figure 2 ;

[0042] Figure 3 It is a structural schematic diagram of the material pouring mechanism in the present invention;

[0043] Figure 4 It is a schematic diagram of the corner structure of the stacking unit in the present invention;

[0044] Figure 5 It is a front view of the stacking unit in the present invention;

[0045] Figure 6 It is a right side view of the stacking unit in the present invention;

[0046] Figure 7 It is a top view of the stacking unit in the present invention.

[0047] In the figure: 1. first material conveyor belt; 2. first mixing and loading machine; 3. first empty material frame conveyor line; 4. first main conveyor line; 5. first flattening mechanism; 6. stacking unit; 601. stacking frame; 602. frame tray; 603. connecting shaft head; 604. clamping column; 605. clamping groove; 7. first sub-conveyor line; 8. second sub-conveyor line; 9. third sub-conveyor line; 10. second main conveyor line; 11. second empty material frame conveyor line; 12. pouring platform; 13. top slide; 14. sliding mechanism; 15. first telescopic manipulator; 151. rotating motor; 152. clamping shaft; 153. screw; 16. second telescopic manipulator; 17. second material conveyor belt; 18. second mixing and loading machine; 19. second flattening mechanism; 20. third main conveyor line. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] Embodiment 1:

[0051] refer to Figure 1 , Figure 1A structural schematic diagram of the traditional Liubao tea pile-stuffing production line of Example 1 of the present invention is shown. The traditional Liubao tea pile-stuffing production line is used for the industrial operation of tea pile-stuffing processing. The standardized production of tea pile-stuffing processing is realized through the mechanized and automated pile-stuffing production line. While improving the production efficiency of the pile-stuffing process, the uniformity of the pile-stuffing effect of the same batch and different batches of tea leaves is guaranteed, thereby improving the stability of the quality of the finished tea. The traditional Liubao tea pile-stuffing production line includes a plurality of conveyor lines, which are used to transmit the stacking unit 6 for holding tea leaves during the tea pile-stuffing production process. The conveyor line can be a conveyor belt of the prior art, which can carry the stacking unit 6 and has an automatic moving function. The stacking unit 6 is used to hold the tea leaves to be pile-stuffed. In the traditional pile-stuffing process, the tea leaves are generally directly stacked into a certain tea pile and placed in the processing room for pile-stuffing. The present embodiment uses the stacking unit 6 instead of direct stacking. The significance is that on the one hand, the poor sanitary conditions of direct stacking are changed, and the effect of clean production is achieved; on the other hand, direct stacking is not easy to control the amount of stacked tea leaves, nor is it easy to control the thickness of the pile. The material unit 6 can discharge the material in a quantitative manner during loading, so that the amount of tea leaves piled in each material piling unit 6 can be standardized. At the same time, a certain thickness of flattening operation is completed in the material piling unit 6, which can ensure the thickness of the tea leaves piled and provide a feasible operation method for controlling the thickness of the tea leaves piled. On the one hand, if the tea leaves are directly piled on the ground or on a material rack, the bottom of the tea pile has poor air permeability, and it is also difficult to control the temperature and humidity, which is not conducive to the fermentation of the tea leaves piled. By arranging a mesh bottom plate and side plates on the material piling unit 6, good air permeability of the tea leaves pile can be achieved, and the material piling unit 6 is easy to move and place, and can be stacked in multiple layers, which is of great significance for making full use of the space of the pile room and saving costs.

[0052] Specifically, in order to achieve the above-mentioned stacking purpose, a first mixing and loading machine 2 is provided at the starting end of the first main conveyor line 4, and the feeding end of the first mixing and loading machine 2 is connected to the first feeding conveyor belt 1. The empty stacking unit 6 is transmitted to the starting end of the first main conveyor line 4 through the first empty material frame conveyor line 3, and the end of the first empty material frame conveyor line 3 has a lifting mechanism to switch the conveyor line so that the stacking unit 6 can enter from one conveyor line to another conveyor line. The lifting mechanism can adopt the conveyor line auxiliary device of the prior art and will not be elaborated in this embodiment. The first mixing and loading machine 2 is located just above the starting end of the first main conveyor line 4 and has a discharge port at the bottom. When the stacking unit 6 is transmitted and positioned just below the discharge port, the tea material is loaded into the stacking unit 6 by controlling the opening of the discharge port to achieve loading. At the same time, the first mixing and loading machine 2 also includes a rotating drum for mixing the tea material to ensure that the tea pile is fully turned over and the looseness remains basically consistent. The tea material after being fully mixed and broken up can be stacked more evenly into the stacking unit 6.

[0053] Specifically, in order to make the thickness of the tea material pile in each stacking unit 6 consistent, a first flattening mechanism 5 is provided at the rear end of the first mixing and loading machine 2. The first flattening mechanism 5 includes a horizontal fixed frame fixed to the outer shell of the first mixing and loading machine 2, and a flattening scraper is hinged at the end of the horizontal fixed frame. The flattening scraper is set at a certain angle to the horizontal fixed frame so that the end face of the flattening scraper can be against the upper edge of the stacking unit 6. At the same time, a tension spring is obliquely pulled between the flattening scraper and the horizontal fixed frame to stretch the two apart and prevent the two from being excessively stretched. When the stacking unit 6 passes through the first flattening mechanism 5, the end face of the flattening scraper presses the upper edge of the stacking unit 6 and scrapes from the upper surface of the stacking unit 6, so that the tea material higher than the stacking unit 6 is pressed into the material frame, and the excess tea material will be scraped out of the material frame, thereby realizing the flattening of the upper surface of the tea material in the material frame, and a small amount of scraped tea material falls into the material frame tray 602, and does not cause pollution to the conveyor line.

[0054] After calculation, the height of the stacking unit 6 is set to a height that is conducive to stacking and can achieve a better stacking effect. Specifically, the internal length, width and height of the stacking unit 6 are 100 cm×50 cm×40 cm.

[0055] The stacking unit 6 after flattening is transported backward along the first main conveying line 4 and enters a preset stacking chamber. In this embodiment, three stacking chambers are provided, wherein the first main conveying line 4 is connected to branch conveying lines entering the three stacking chambers respectively, such as Figure 1 As shown, it includes a first sub-transmission line 7, a second sub-transmission line 8, and a third sub-transmission line 9. A lifting mechanism for switching with the first main transmission line 4 is provided at the bottom of the three transmission lines. The three transmission lines are respectively connected to the first stack chamber, the second stack chamber, and the third stack chamber.

[0056] In some other embodiments, the number of stack stuffing chambers can be increased or decreased as needed. In this embodiment, in order to achieve three stack stuffing environments with different parameters, three stack stuffing chambers are provided.

[0057] The stacking unit 6 filled with tea leaves completes a preset time of stacking and stuffing treatment in the stacking and stuffing chamber. Specifically, each stacking and stuffing chamber is provided with a temperature control device and a humidity adjustment device. The humidity adjustment device includes a humidifying device and an exhaust device, and is installed with a temperature sensor and a humidity sensor. The stacking units 6 sent into the stacking and stuffing chamber are placed in sequence according to the order of entry and are timed separately. When the stacking and stuffing reaches the specified time, they are taken out in sequence according to the order of entry.

[0058] Furthermore, a camera is provided at the entrance of the stacking chamber, and an identification code is marked on the side panel of each stacking unit 6. The camera identifies the identification code of the stacking unit 6 entering the stacking chamber and starts to calculate the entry time. An indicator screen is also provided outside the stacking chamber to display the stacking time of each stacking unit 6 in the stacking chamber. When one of the following stacking units 6 reaches the preset stacking time, the indicator screen will be highlighted to remind the operator to turn the material over and proceed to the next step of processing. At the same time, the indicator screen displays the temperature and humidity values ​​in the stacking chamber in real time. When it exceeds the preset temperature and humidity range, it will also be highlighted and an alarm will be issued to remind the operator to handle it in time. At this time, it is necessary to turn on the temperature control equipment, humidification equipment or exhaust equipment to adjust the internal temperature and humidity.

[0059] Furthermore, oxygen adding equipment and oxygen content sensors are also provided in the stack stuffing chamber to control the oxygen content during stack stuffing and achieve better stack stuffing effect.

[0060] After the tea leaves have been fermented in the pile-stirring chamber for a certain period of time, they need to be properly turned over and piled and stuffed a second time, or even three or more times. Therefore, a circulating discharging and feeding system is provided between the two pile-stirring chambers.

[0061] Specific as Figure 2 As shown, the circulating discharging and feeding system includes a second main conveying line 10 connected to a pile of stuffy chambers, the second main conveying line 10 is connected to a second empty material frame conveying line 11, and the tail end of the second main conveying line 10 is provided with a pouring mechanism for pouring out the tea material; Figure 3As shown, the material unloading mechanism specifically includes: a top slide 13 fixedly arranged above the tail end of the second main conveyor line 10, a sliding mechanism 14 horizontally slidably connected to the top slide 13, a first telescopic manipulator 15 fixedly connected to the bottom of the sliding mechanism 14, and a second telescopic manipulator 16 slidably connected to the bottom of the sliding mechanism 14, the first telescopic manipulator 15 and the second telescopic manipulator 16 are linearly movably connected, and specifically, a lead screw 153 is provided between the first telescopic manipulator 15 and the second telescopic manipulator 16, the lead screw 153 is rotatably connected to the first telescopic manipulator 15, and is screwed to the second telescopic manipulator 16, and a rotating motor transmission-connected to the lead screw 153 is provided at the first telescopic manipulator 15, and the ends of the first telescopic manipulator 15 and the second telescopic manipulator 16 are fixedly connected with clamping shafts 152 facing each other, and the clamping shaft 152 located on one side of the first telescopic manipulator 15 is transmission-connected with a rotating motor 151; correspondingly, connecting shaft heads 603 cooperating with the clamping shaft 152 are fixedly connected on both sides of the stacking frame 601. When the above-mentioned unloading mechanism is in operation, the first telescopic manipulator 15 and the second telescopic manipulator 16 retract upward, and the stacking unit 6 is clamped by the two telescopic manipulators, detaches from the second main conveyor line 10, and driven by the sliding mechanism 14, enters the top of the unloading platform 12, and the rotating motor 151 drives the stacking unit 6 to rotate, and the tea material is poured onto the unloading platform 12 and enters the second mixing and loading machine 18 with the transmission of the second feeding conveyor belt 17. The structure of the second mixing and loading machine 18 is exactly the same as that of the first mixing and loading machine 2. The tea material is beaten by a roller and then loaded into the stacking unit 6 again, wherein the empty stacking unit 6 is transmitted to the bottom of the second mixing and loading machine 18 through the second empty material frame conveyor line 11. After loading is completed, it enters the next pile of stuffing chambers or the next pile of stuffing areas through the third main conveyor line 20.

[0062] After the tea leaves have completed one stacking and steaming, they will pass through the above-mentioned circulating discharging and feeding system, be spread out again and enter the second mixing and loading machine 18, with the purpose of restoring the tea leaves that have undergone the first stacking and steaming to a loose state, and making the materials inside and outside the tea pile scattered again. The loose tea leaves will be sent into the empty stacking unit 6 pre-placed on the third main conveying line 20 through the second mixing and loading machine 18, and then be flattened again through the second flattening mechanism 19. The flattened tea leaves will enter the next stacking and steaming process, completing the second stacking and steaming.

[0063] After the second stacking and steaming, the tea material is unloaded through a conveyor line, or circulated into the third stacking and steaming or multiple stacking and steaming until the ideal stacking and steaming effect is achieved.

[0064] Furthermore, if Figures 4 to 7As shown, the stacking unit 6 is a rectangular frame structure, including a detachably connected stacking frame 601 and a material frame tray 602. The stacking frame 601 is a frame structure with an open top, at least two side panels of which are grid-like air-permeable panels, and the bottom panel is also preferably a grid-like air-permeable panel, which has a good ventilation effect and solves the problem of quality degradation caused by poor ventilation during the stacking and steaming of tea leaves; cylindrical clamping columns 604 are provided at the four bottom corners for connecting with the material frame tray 602. The material frame tray 602 can be detachably fixed to the bottom of the stacking and stuffing frame 601, and the stacking and stuffing frame 601 is supported from the bottom so that its grid-shaped bottom plate can be well ventilated; the material frame tray 602 is a frame structure whose height is lower than the stacking and stuffing frame 601, and has four edge enclosures, and the length of each side of the four edge enclosures is greater than the stacking and stuffing frame 601, and can receive the broken tea leaves leaking from the grid holes of the side plates and the bottom plate of the stacking and stuffing frame 601, as well as the tea leaves dropped when passing through the flattening mechanism, to avoid these tea leaves scattering onto the conveyor belt or the stacking and stuffing chamber during the transmission process, causing pollution. At the same time, the material frame tray 602 collects the broken tea leaves The tea leaves leaked or scraped out from the stacking and stuffing frame 601 can also be more convenient to clean; the bottom of the material frame tray 602 has horizontal and / or vertical supporting ribs that support the stacking and stuffing frame 601, and the supporting ribs are provided with clamping grooves 605 that cooperate with the clamping columns 604. When placing the stacking and stuffing frame 601, it is only necessary to align the four clamping columns 604 with the four clamping grooves 605 and press downward forcefully to insert the clamping columns 604 into the clamping grooves 605 to form a connection; the four clamping columns 604 and the supporting ribs are all made of wear-resistant and tough plastic material, which can form a better plug-in fixation, and are not easy to deform, and can be repeatedly plugged and unplugged.

[0065] In the above embodiment, the four side panels of the stacking and stuffing frame 601 are grid-shaped breathable panels, wherein the centers of the two short side panels are respectively protruded with connecting shaft heads 603 on both sides, the connecting shaft heads 603 are integrally formed or fixedly connected with the solid plate, and a transmission connecting hole is axially opened inside the connecting shaft head 603 for transmission connection with the clamping manipulator, specifically, a hexagonal hole is opened, and accordingly, the inner side of the clamping manipulator has a clamping shaft 152 that cooperates with the hexagonal hole for transmission, and when the clamping shaft 152 is extended into the hexagonal hole, the clamping shaft 152 is driven to rotate by the rotating motor 151, thereby realizing the flipping of the stacking and stuffing frame 601 and completing the material unloading operation.

[0066] It should also be understood that the material stacking frame 601 and the material frame tray 602 may also be connected in other ways, such as threaded connection, or snap connection, etc. However, no matter which connection method is used, it is necessary to ensure that during the material pouring process, the material frame tray 602 and the material stacking frame 601 are securely connected, and the material frame tray 602 must not accidentally fall off. In order to avoid the occurrence of falling off, the material frame tray 602 is integrally molded from lightweight plastic and has a relatively small weight.

[0067] In some other embodiments, further, the four side panels of the stacking frame 601 are detachably spliced ​​together to facilitate disassembly and cleaning. In actual production, the stacking unit 6 needs to be washed and disinfected, and the detachable material frame is more convenient for cleaning and drying, effectively preventing the growth of microorganisms and harmful bacteria.

[0068] It can be understood that the driving device that drives the sliding mechanism 14 can be a driving structure or mechanical device of conventional technology that can realize linear motion function / rotational motion / telescopic motion, for example, it can be a servo motor, hydraulic cylinder, electric cylinder, etc.

[0069] The mechanism for driving the telescopic manipulator to perform telescopic movement may be a crank-connecting rod mechanism, a screw mechanism, a gear reducer, a belt drive mechanism, and a chain drive mechanism, or may be other transmission mechanisms that convert rotational motion into linear motion. This embodiment does not limit the specific type of the telescopic mechanism.

[0070] Embodiment 2:

[0071] Embodiment 2 of the present invention provides a traditional Liubao tea pile-steeping process, comprising the following steps:

[0072] S1: Weigh 180kg of tea leaves processed in the previous process;

[0073] S2: Load the tea leaves into a stacking frame and flatten them into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0074] S3: transferring the tea leaves into a stacking chamber for a stacking and stuffing for 3.5 hours in an environment with a temperature of 41-43° C., a humidity of 73-77%, and an oxygen content of 22-23%;

[0075] S4: After turning over the steamed tea leaves, reload them into the stacking unit and flatten them into a tea pile with a length, width and height of 100cm×50xm×40cm;

[0076] S5: Transfer to the stacking chamber for secondary stacking, and stack for 3.5 hours in an environment with a temperature of 41-43°C, a humidity of 73-77%, and an oxygen content of 22-23%;

[0077] S6: After turning over the tea leaves after being piled and steamed, the tea leaves are reloaded into the pile unit and flattened into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0078] S7: Transfer to the stacking chamber for three stackings, and stack for 3.5 hours in an environment with a temperature of 41-43° C., a humidity of 63-67%, and an oxygen content of 22-23%;

[0079] S8: After turning over the tea leaves after being piled and steamed, the tea leaves are reloaded into the pile unit and flattened into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0080] S9: Transfer to the stacking chamber for four stackings, and stack for 3.5 hours in an environment with a temperature of 41-43° C., a humidity of 63-67%, and an oxygen content of 22-23%;

[0081] S10: After turning over the steamed tea leaves, reload them into the stacking unit and flatten them into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0082] S11: Transfer to the stacking chamber for five stackings, and stack for 3.5 hours in an environment with a temperature of 41-43° C., a humidity of 53-57%, and an oxygen content of 22-23%;

[0083] S12: After turning over the steamed tea leaves, reload them into the stacking unit and flatten them into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0084] S13: Transfer to the stacking chamber for six times of stacking, and stack for 3.5 hours in an environment with a temperature of 41-43° C., a humidity of 53-57%, and an oxygen content of 22-23%;

[0085] S14: The stacking is completed and the next processing step is entered.

[0086] Embodiment 3:

[0087] Embodiment 3 of the present invention provides another traditional Liubao tea pile-steeping process, comprising the following steps:

[0088] S1: Weigh 180kg of tea leaves processed in the previous process;

[0089] S2: Load the tea leaves into a stacking frame and flatten them into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0090] S3: transferring the tea leaves into a stacking chamber for a stacking and stuffing for 3.5 hours in an environment with a temperature of 42-45° C., a humidity of 75-80%, and an oxygen content of 23-24%;

[0091] S4: After turning over the steamed tea leaves, reload them into the stacking unit and flatten them into a tea pile with a length, width and height of 100cm×50xm×40cm;

[0092] S5: transfer to the stacking chamber for secondary stacking, and stack for 3.5 hours in an environment with a temperature of 42-45°C, a humidity of 75-80%, and an oxygen content of 23-24%;

[0093] S6: After turning over the tea leaves after being piled and steamed, the tea leaves are reloaded into the pile unit and flattened into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0094] S7: Transfer to the stacking chamber for three stackings, and stack for 3.5 hours in an environment with a temperature of 42-45° C., a humidity of 65-70%, and an oxygen content of 23-24%;

[0095] S8: After turning over the tea leaves after being piled and steamed, the tea leaves are reloaded into the pile unit and flattened into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0096] S9: Transfer to the stacking chamber for four stacking and stuffing, and stack for 3.5 hours in an environment with a temperature of 42-45° C., a humidity of 65-70%, and an oxygen content of 23-24%;

[0097] S10: After turning over the steamed tea leaves, reload them into the stacking unit and flatten them into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0098] S11: Transfer to the stacking chamber for five stackings, and stack for 3.5 hours in an environment with a temperature of 42-45° C., a humidity of 55-60%, and an oxygen content of 23-24%;

[0099] S12: After turning over the steamed tea leaves, reload them into the stacking unit and flatten them into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0100] S13: Transfer to the stacking chamber for six times of stacking, and stack for 3.5 hours in an environment with a temperature of 42-45° C., a humidity of 55-60%, and an oxygen content of 23-24%;

[0101] S14: The stacking is completed and the next processing step is entered.

[0102] Embodiment 4:

[0103] Embodiment 4 of the present invention provides another traditional Liubao tea pile-steeping process, comprising the following steps:

[0104] S1: Weigh 180kg of tea leaves processed in the previous process;

[0105] S2: Load the tea leaves into a stacking frame and flatten them into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0106] S3: transferring the tea leaves into a stacking chamber for a stacking and stuffing for 4 hours in an environment with a temperature of 40-42° C., a humidity of 70-75%, and an oxygen content of 21-22%;

[0107] S4: After turning over the steamed tea leaves, reload them into the stacking unit and flatten them into a tea pile with a length, width and height of 100cm×50xm×40cm;

[0108] S5: Transfer to the stacking chamber for secondary stacking, and stack for 4 hours in an environment with a temperature of 40-42°C, a humidity of 70-75%, and an oxygen content of 21-22%;

[0109] S6: After turning over the tea leaves after being piled and steamed, the tea leaves are reloaded into the pile unit and flattened into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0110] S7: Transfer to the stacking chamber for three stackings, and stack for 4 hours in an environment with a temperature of 40-42°C, a humidity of 60-65%, and an oxygen content of 21-22%;

[0111] S8: After turning over the tea leaves after being piled and steamed, the tea leaves are reloaded into the pile unit and flattened into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0112] S9: Transfer to the stacking chamber for four stackings, and stack for 4 hours in an environment with a temperature of 40-42°C, a humidity of 60-65%, and an oxygen content of 21-22%;

[0113] S10: After turning over the steamed tea leaves, reload them into the stacking unit and flatten them into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0114] S11: Transfer to the stacking chamber for five times of stacking, and stack for 4 hours in an environment with a temperature of 40-42° C., a humidity of 50-55%, and an oxygen content of 21-22%;

[0115] S12: After turning over the steamed tea leaves, reload them into the stacking unit and flatten them into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0116] S13: Transfer to the stacking chamber for six times of stacking, and stack for 4 hours in an environment with a temperature of 40-42° C., a humidity of 50-55%, and an oxygen content of 21-22%;

[0117] S14: The stacking is completed and the next processing step is entered.

[0118] Comparative Example 1:

[0119] S1: Weigh 180kg of tea leaves processed in the previous process;

[0120] S2: Load the tea leaves into a pile unit and flatten them into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0121] S3: transferring the tea leaves into a stacking chamber for stacking and stuffing in an air environment with a temperature of 30-32° C. and a humidity of 80-85%, and manually turning the leaves every 3.5 hours for a total of 5 times;

[0122] S4: The stacking is completed and the next processing step is entered.

[0123] Comparative Example 2:

[0124] S1: Weigh 180kg of tea leaves processed in the previous process;

[0125] S2: Load the tea leaves into a pile unit and flatten them into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0126] S3: transferring the tea leaves into a stacking chamber for stacking and stuffing in an air environment with a temperature of 50-52° C. and a humidity of 70-75%, and manually turning the leaves every 3.5 hours for a total of 5 times;

[0127] S4: The stacking is completed and the next processing step is entered.

[0128] Comparative Example 3:

[0129] S1: Weigh 180kg of tea leaves processed in the previous process;

[0130] S2: Load the tea leaves into a pile unit and flatten them into a tea pile with a length, width and height of 100 cm×50 x m×40 cm;

[0131] S3: transferring the tea leaves into a stacking chamber for stacking and stuffing in an environment with a temperature of 42-44° C., a humidity of 60-65%, and an oxygen content of 20-21%, and manually turning the leaves every 6 hours for a total of 4 times;

[0132] S4: The stacking is completed and the next processing step is entered.

[0133] Comparative Example 4:

[0134] S1: Weigh 180kg of tea leaves processed in the previous process;

[0135] S2: Load the tea leaves into a pile unit and flatten them into a tea pile with a length, width and height of 100 cm×50 cm×40 cm;

[0136] S3: transferring the tea leaves into a pile-stuffing chamber, and stacking them for 24 hours in an environment with a temperature of 42-44° C., a humidity of 70-75%, and an oxygen content of 23-24%;

[0137] S4: The stacking is completed and the next processing step is entered.

[0138] Comparative Example 5:

[0139] S1: Weigh 180kg of tea leaves processed in the previous process;

[0140] S2: Load the tea leaves into a pile unit and flatten them into a tea pile with a length, width and height of 100 cm×50 cm×40 cm;

[0141] S3: transferring the tea leaves into a stacking chamber for a stacking and stuffing for 12 hours in an environment with a temperature of 42-44° C., a humidity of 70-75%, and an oxygen content of 23-24%;

[0142] S4: After turning over the steamed tea leaves, reload them into the stacking unit and flatten them into a tea pile with a length, width and height of 100cm×50xm×40cm;

[0143] S5: Transfer to the stacking chamber for secondary stacking, and stack for 12 hours in an environment with a temperature of 42-44°C, a humidity of 70-75%, and an oxygen content of 23-24%;

[0144] S6: The stacking is completed and the next processing step is entered.

[0145] The sensory evaluation results of the traditional Liubao tea processed by the pile-stuffing process of the above-mentioned Examples 2 to 4 and Comparative Examples 1 to 5 are shown in Table 1, and the contained biochemical components are shown in Table 2. The results show that when the parameters of the pile-stuffing process are controlled under the conditions specified by the present invention, the produced traditional Liubao tea has excellent sensory quality characteristics such as a dark brown appearance, bright orange-red soup color, pure aroma, floral fragrance with aged fragrance, rich taste, and yellow-brown leaf bottom. By accurately controlling the pile-stuffing process, the tea polyphenols, soluble sugars, amino acids and other contained biochemical components in the tea leaves can be relatively stably converted into appropriate amounts of theaflavins, thearubigins, theabrownins and flavor components. However, the pile-stuffing process parameters in the comparative examples were not controlled under the conditions specified by the present invention, and the pile-stuffing effect was worse than that of the present invention. The produced traditional Liubao tea contained insufficient biochemical components, resulting in poor soup color, aroma, taste, leaf bottom and other sensory qualities.

[0146] Table 1 Sensory evaluation results of examples and comparative examples

[0147]

[0148] Table 2 Biochemical components contained in the examples and comparative examples

[0149] water leachate Amino Acids Caffeine Tea polyphenols Theaflavins Thearubigins Theabrownin Example 2 45.28 5.42 14.14 18.100 0.409 6.15 3.21 Example 3 45.37 5.38 14.24 18.18 0.411 6.21 3.15 Example 4 45.43 5.52 14.20 18.16 0.406 6.13 3.18 Comparative Example 1 46.27 5.56 15.01 18.43 0.389 6.34 2.84 Comparative Example 2 46.27 5.82 15.64 18.54 0.377 6.38 2.63 Comparative Example 3 46.21 5.91 16.08 18.72 0.365 6.18 2.40 Comparative Example 4 47.52 6.77 16.85 19.83 0.296 6.06 1.98 Comparative Example 5 47.55 6.52 16.41 19.60 0.333 6.09 2.08 Comparative Example 6 45.28 5.42 14.14 18.100 0.409 6.15 3.21

[0150] Note: All calculations are based on dry weight of tea leaves.

[0151] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0152] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A traditional Liubao tea pile-steeping production line, characterized in that: include: A stacking unit, used for stacking tea materials, the stacking unit comprising a material frame tray and a stacking frame detachably fixed in the material frame tray; A stacking chamber is used to hold the stacking unit. In order to realize three stacking environments with different parameters, three stacking chambers are provided. A circulating discharging and feeding system is provided between two adjacent stacking chambers. Each of the stacking chambers is provided with a temperature control device, a humidity adjustment device, an oxygenation device, a temperature sensor, a humidity sensor and an oxygen content sensor; A conveyor line is used to transfer the stacking unit and transfer the stacking unit into / out of the stacking chamber; the conveyor line includes a first main conveyor line and a first empty material frame conveyor line, and the empty stacking unit is conveyed to the starting end of the first main conveyor line through the first empty material frame conveyor line; the first main conveyor line is connected to branch conveyor lines entering the three stacking chambers respectively, and a lifting mechanism for switching with the first main conveyor line is provided at the bottom of the three branch conveyor lines; the end of the first empty material frame conveyor line is provided with a lifting mechanism to switch the conveyor line; A mixing and loading machine, located just above the starting end of the conveying line, with a discharge port at the bottom, and used for mixing and filling tea material into the stacking unit; The flattening mechanism is located at the rear end of the mixing and loader, and flattens the tea material inside the stacking unit to a preset thickness from above the stacking unit; the flattening mechanism comprises a horizontal fixing frame fixed to the outer shell of the mixing and loader, and a flattening scraper is hinged at the end of the horizontal fixing frame, and the flattening scraper is arranged at a certain angle to the horizontal fixing frame; a tension spring is obliquely stretched between the flattening scraper and the horizontal fixing frame to open the two and prevent the two from being overly opened; The bottom plate and the side plates of the material stacking frame are grid-shaped air-permeable plates, and a gap is left between the bottom plate of the material stacking frame and the material frame tray.

2. The traditional Liubao tea pile-steeping production line according to claim 1 is characterized in that: It also includes a material unloading mechanism, which includes a top slide fixedly arranged above the end of the conveying line, a sliding mechanism horizontally slidably connected to the top slide, a first telescopic manipulator fixedly connected to the bottom of the sliding mechanism, and a second telescopic manipulator slidably connected to the bottom of the sliding mechanism, the first telescopic manipulator and the second telescopic manipulator are connected by a lead screw, and the ends of the first telescopic manipulator and the second telescopic manipulator are fixedly connected with clamping shafts facing each other, one of the clamping shafts is transmission-connected to a rotating motor; correspondingly, connecting shaft heads cooperating with the clamping shafts are fixedly connected on both sides of the stacking frame.

3. The traditional Liubao tea pile-steeping production line according to claim 1 is characterized in that: The internal length, width and height of the stacking material frame are 100cm×50cm×40cm.

4. The traditional Liubao tea pile-steeping production line according to claim 1 is characterized in that: An indicator screen for displaying the monitoring values ​​of the temperature sensor and the humidity sensor is arranged outside the stack chamber.

5. A traditional Liubao tea pile-stewing process, which is performed by the traditional Liubao tea pile-stewing production line according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step S1, weighing a preset weight of tea leaves processed in the previous process; Step S2, loading the tea leaves into a stacking frame and flattening the tea leaves into a tea pile of a preset thickness; Step S3, transferring the tea leaves into a stacking chamber for a stacking and stuffing, and stacking and stuffing for 3 to 4 hours in an environment with a temperature of 40 to 45° C., a humidity of 70 to 80%, and an oxygen content of 21 to 24%; Step S4, turning over the tea leaves after stacking and steaming, reloading them into the stacking and steaming frame, and flattening them to a preset thickness; Step S5, re-enter the previous stacking chamber, and maintain the temperature, humidity and oxygen content of the previous stacking chamber, and continue the secondary stacking chamber for 3 to 4 hours; Step S6, repeat step S4; Step S7, transfer to another stacking chamber for three stacking and stuffing, and stack for 3 to 4 hours in an environment with a temperature of 40 to 45° C., a humidity of 60 to 70%, and an oxygen content of 21 to 24%; Step S8, repeat step S4; Step S9, repeat step S5 to complete four stacking and stuffing; Step S10, repeat step S4; Step S11, transfer to another stacking chamber for five times of stacking, and stack for 3 to 4 hours in an environment with a temperature of 40 to 45° C., a humidity of 50 to 60%, and an oxygen content of 21 to 24%; Step S12, repeat step S4; Step S13, repeat step S5 to complete six times of stacking; Step S14: Complete the stacking and proceed to the next processing step.

6. The traditional Liubao tea pile-steaming process according to claim 5, characterized in that: In the step S1 to step S2, 180 kg of tea leaves processed in the previous process are weighed, and the tea leaves in the stacking frame are flattened into a tea pile with a length, width and height of 100 cm×50 x m×40 cm.

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