Da hongpao tea refining processing and oxygenation packaging continuous production line

Abstract

The invention discloses a Dahongpao tea refined processing and oxygenated packaging continuous production line. The production line comprises a rolling tight baking and cable airing machine, a blending grading impurity removing machine and an oxygenated alcoholization packaging machine which are sequentially connected through a conveying device. The roll-shaped tight incense baking and cable airing machine comprises an electric heating roll-shaped machine, an electromagnetic tight-shaped machine and an incense baking and cable airing machine; the aroma-baking and cable-airing machine comprises an aroma-baking and cable-airing box body, and a far infrared aroma-enhancing and aroma-baking layer, a cold air cable-airing layer, a microwave aroma-enhancing and sterilizing layer and a dynamic and static cable-airing layer are sequentially arranged in the aroma-baking and cable-airing box body from top to bottom; the blending, grading and impurity removing machine comprises a weighing conveying groove, a spiral lifting conveyor, a blending and uniform stacking machine and a winnowing, grading and impurity removing machine; the oxygenating and alcoholizing packaging machine comprises a tea caddy cleaning and sterilizing cabin and a canning and oxygenating sealing cabin. The method provided by the invention can simplify the steps of tea refining, improve the quality of tea fine processing and shorten the alcoholization annealing time, and can be widely applied to the field of clovershrub refining.

Description

Technical Field

[0001] The invention relates to the technical field of tea processing, in particular to a continuous production line for refining, processing and oxygenating packaging of Dahongpao tea. Background Art

[0002] The current refining process of Da Hong Pao tea mainly includes: raw tea leaves → shaping → roasting and drying → blending → uniform stacking → grading → impurity removal → storage and annealing. However, most of these refining processes use single machines, and some processes are still manually operated. Therefore, the mechanical equipment is simple, the operation is complicated, the labor workload is large, the efficiency is low, and it is difficult to produce continuously. At the same time, each process also has the following problems:

[0003] 1) The traditional process of roasting and drying Da Hong Pao tea is very complicated. Usually, the tea leaves are evenly placed in the baking cage in the baking room. The roasting time is as long as 8-10 hours, and then "dried" for 5-6 hours. During this period, the tea leaves are turned over and stirred dozens of times. The aroma and taste of Da Hong Pao tea roasted and dried by different chefs are also very different.

[0004] 2) The blending and piling process is mostly carried out by using a box-type blending and piling machine. For example, Chinese patent application No. 2016208735890 discloses a tea piling and blending machine, which occupies a large area, is complicated to operate, and has high piling and blending costs.

[0005] 3) The "Da Hong Pao Tea" produced by the current traditional process has a "dry taste" due to the high fire power and long baking time. Therefore, it is generally necessary to store it naturally for 1-2 years and anneal it before drinking. There are risks such as long storage, annealing and mellowing time, and it occupies a lot of storage plants. During storage, it is easily eroded by water vapor, light, heat and microorganisms and bacteria, and is prone to quality deterioration. Therefore, it is necessary to develop a new type of continuous production line for refined processing and oxygenated packaging to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a continuous production line for refining and processing Dahongpao tea and oxygenating and packaging, so as to solve the problems that the existing Dahongpao tea refining and packaging process has many mechanical equipment, complicated operation, large labor workload, low work efficiency, is difficult to carry out continuous production, has a long storage, annealing and alcoholization time, and is susceptible to water vapor, light, heat, and microbial erosion and contamination.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a continuous production line for refining, processing and oxygenating packaging of Dahongpao tea, including a rolling, compacting, roasting and drying machine, a blending, grading and impurity removing machine and an oxygenating, alcoholizing and packaging machine which are connected in sequence through a conveying device.

[0008] The rolling, compacting, roasting, fragrant and airing machine includes a large-diameter titanium steel long drum electric rolling machine, a vibration cooling and screening conveying trough arranged behind the machine, a small-diameter carbon steel shell ceramic inner wall short drum electromagnetic compacting machine, and a far-infrared microwave roasting and cold wind natural airing machine. The large-diameter titanium steel long drum electric rolling machine uses the characteristics of fast heat conduction of the large-diameter titanium steel long drum to make thick strips of red robe tea by fast frying and rolling. The vibration cooling and screening conveying trough uses a 12-mesh stainless steel screen to timely dissipate heat and cool down the tea leaves after electric rolling to eliminate the hot air and screen out the broken tea powder produced during rolling, and the cooling and airing are carried out by the vibration of the cold wind and the screen to screen out the broken tea powder. The small-diameter carbon steel shell ceramic inner wall short drum electromagnetic compacting machine uses the characteristics of the ceramic inner wall being relatively smooth, with low friction, slow heat conduction, and low radiation heat energy to tighten the strips by slow compacting to improve the aroma.

[0009] In order to better replace the traditional charcoal fire double roasting and bamboo plate drying process of Dahongpao tea, the roasting and drying box is designed as a four-layer structure. The first layer is a far-infrared aroma roasting layer, which uses a far-infrared ceramic radiation lamp to perform infrared light aroma roasting; the second layer is a cold air drying layer, which uses the combined effect of blowing cold air and the vibration of the concave and convex screen to dynamically cool the drying and eliminate the hot air; the third layer is a microwave aroma sterilization layer, which continues to improve the rich orchid fragrance of Dahongpao tea and kill microorganisms through a three-dimensional microwave radiation space; the fourth layer is a dynamic and static drying layer, which drives the screen to vibrate through a vibrator to perform dynamic drying for ventilation and air permeability, and completely screen out the remaining broken tea powder, or perform static natural drying. This dynamic and static drying process can automate the entire drying process and shorten the drying time by half, and can also solve the problems of the traditional drying process, which has complicated steps, labor-consuming and time-consuming, and high refining costs.

[0010] The blending, grading and impurity removing machine comprises a weighing conveying trough, a screw lifting conveyor, a blending and leveling machine and an air selection, grading and impurity removing machine.

[0011] In order to facilitate the weighing and feeding of multiple blended teas at the same time, the weighing conveyor troughs are arranged vertically at intervals on the path of the spiral lifting conveyor. The weighing conveyor trough includes a trough body, a weighing conveyor belt arranged in the trough body, and a weighing device arranged below the weighing conveyor belt. A tea storage hopper is arranged at the feeding end of the trough body. While the tea storage hopper is discharging the tea, the weighing conveyor belt slowly drives the tea leaves forward, so that the tea leaves are laid on the weighing conveyor belt with a uniform thickness.

[0012] In order to realize multi-functionality of one machine and reduce the area occupied by equipment and workshop, a spiral lifting conveyor is used, and a group of five-finger turning and mixing robots are distributed on the spiral lifting conveyor to simulate human hand turning and mixing of tea leaves. During the conveying process, the tea leaves are initially blended and transported forward by turning them forward and backward. The initially blended tea leaves are vertically sent into the blending and stacking machine.

[0013] In order to solve the problem that the existing blending and stacking machines occupy a large space and realize efficient blending and stacking of tea leaves, the blending and stacking machine includes a rotating blending and stacking cylinder, a feeding port is provided on the top of the rotating blending and stacking cylinder, and a discharge port is provided on the bottom. A first guide rib opposite to the rotation direction of a rotating distributor is provided in the blending and stacking cylinder below the feeding port. A mixing and blending mechanism for catching the tea leaves on the rotating distributor and mixing them again is provided below the rotating distributor and the second guide rib opposite to the rotation direction. The rotating blending and stacking cylinder and the rotating distributor have opposite rotation directions.

[0014] The wind classification and impurity removal machine comprises a wind classification and impurity removal box and a blower. In order to efficiently classify and remove impurities from tea leaves, the front part of the wind classification and impurity removal box is designed to be rectangular, and the rear part is designed to be a cone-shaped outlet. The cone-shaped outlet is used to tighten the air in the wind classification box, forcing the heavier tea leaves to fall into the sorting chamber at the junction of the rectangular box and the cone for classification, and allowing the light tea fragments, tea worm eggs, dust and debris to float out from the cone outlet for removal.

[0015] The oxygenation and alcoholization packaging machine comprises a tea can cleaning and sterilization cabin and a canning and oxygenation sealing cabin connected to the tea can cleaning and sterilization cabin.

[0016] In order to make the tea cans packaging Da Hong Pao tea clean, sterile and oxygen-containing, the tea cans are first input into the plexiglass light sterilization tunnel for efficient sterilization, and then the downward-inclined oxygen ion wind blowing machine arranged outside the light sterilization tunnel and the oxygen ion wind blowing machine arranged below the discharge end of the conveyor belt for upward blowing are used to continuously carry out secondary oxygen ion wind blowing to remove dust and debris inside and outside the tea cans and ultraviolet ozone odors, so that the clean, sterile tea cans with oxygen can be filled with Da Hong Pao tea for oxygenated and sealed packaging.

[0017] The canning and oxygenating sealed cabin is provided with a weighing and canning device, an oxygenating device, a film sealing machine and a capping machine in sequence. In order to make full use of the space of the canning and oxygenating sealed cabin and reduce the occupied workshop area, each device is arranged in a three-dimensional manner, the storage hopper of Dahongpao tea is placed at the highest point, and the third oxygen branch pipe is connected for oxygenating and storing materials, so that it becomes oxygen-enriched tea. The weighing device, the tea inlet cylinder, and the bottom-supporting base-type conveyor belt are arranged vertically under the storage hopper in sequence, and the tea leaves in the vibrating storage hopper are made to fall to the weighing device for quantitative weighing by utilizing the effect of free fall, and then the weighed tea leaves are directly dropped into the tea can on the bottom-supporting base-type conveyor belt through the tea inlet cylinder, and then transported to the oxygenating device for oxygenation, and the film sealing machine and the capping machine arranged at the bottom of the channel are connected through the L-shaped oxygen-enriched channel, and the continuous "oxygenating and storing materials → weighing → filling tea → oxygenating → film pasting → sealing → capping and sealing packaging" is carried out in a three-dimensional manner.

[0018] In order to ensure accurate oxygenation, an injection oxygen mask oxygenation device is used, and the oxygenation device and the bottom-supporting base conveyor belt are arranged above the L-shaped oxygen-enriched channel. When the bottom-supporting base conveyor belt transports the weighed tea cans to the oxygenation device, the oxygen mask moves downward through the mechanical arm to tightly cover the mouth of the tea can, and the oxygenation injection tube set in the oxygen mask is inserted into the tea can to fill it with high-purity oxygen according to the set amount. After the oxygenation is completed, the mechanical arm drives the oxygen mask to move upward, and the movable bottom plate of the bottom-supporting base conveyor belt automatically opens under the action of the cylinder, so that the tea cans on the base fall through the L-shaped oxygen-enriched channel to the conveyor belt set at the bottom of the channel, and are transported to the film sealing machine for film sealing.

[0019] In order to overcome the technical obstacle that the tea cans cannot be sealed with high-temperature films due to the high oxygen content in the tea cans, which are flammable and explosive, after the tea cans are output from the L-shaped oxygen-enriched channel, the film-sticking robot immediately covers the pressure-sensitive sealing film accurately on the mouth of the tea can to prevent oxygen leakage, and then uses an automated hydraulic film sealing machine to use 0.2-0.3MPa of normal temperature hydraulic pressure to bond and seal the sealing film. The ultra-transparent polyester pressure-sensitive sealing film has an outer layer of a pressure-sensitive adhesive coating, and the hydraulic film sealing method can firmly bond the can mouth, and will not crack or peel off even if stored at room temperature for 3-5 years. In particular, the film is ultra-transparent, and the color changes of the Dahongpao tea in the tea can can be observed, which plays a certain role in timely controlling the aging process.

[0020] Beneficial effects of the present invention: The present invention connects the rolling, compacting, roasting, and drying machine, the blending, grading, and impurity removal machine, and the oxygenation, alcoholization, and packaging machine through a conveying device to form a continuous production line for the refining, processing, and oxygenation packaging of Dahongpao tea, which not only solves the problems of the existing refining and packaging procedures of Dahongpao tea, which are equipped with many mechanical equipment, complicated manual operations, and cannot be produced continuously. At the same time, the oxygenation, alcoholization, and packaging machine are used for oxygenated and sealed storage, which can solve the problems of the existing process of long alcoholization annealing time, occupying many storage plants, and being susceptible to water, gas, light, heat, and microbial erosion and contamination, and can promote the substances contained in the tea to undergo oxygen-rich oxidation reaction in a closed environment, which can significantly shorten the alcoholization annealing time. It only takes 6-8 months to store it, and it will reach the quality and charm of aged rock tea stored for 2-3 months. This rolling, compacting, roasting and drying machine solves the problems of the traditional Dahongpao tea shaping, roasting and drying process, which has complicated steps, single machine operation, high energy consumption, labor-intensive and time-consuming, high tea-making cost and low intelligence. In particular, it can improve work efficiency by 50-60%, reduce production costs by 30-40%, and can produce Dahongpao tea with heavy, compact strips and rich floral and fruity aroma.

[0021] The blending, grading and impurity removing machine adopts a spiral lifting conveyor and a weighing conveying trough to complete feeding and conveying, and then enters the blending and stacking machine for blending and stacking, and then passes through the wind selection, grading and impurity removing machine for sorting and impurity removal. Through the combination of the above equipment, it not only solves the problems of the existing tea blending, stacking, grading and impurity removing process, which requires many equipments, complicated operation steps and high production costs, but also reduces the workshop area occupied by 30-40%, saves 10-15%, improves work efficiency by 15-20%, and reduces production costs by about 30%.

[0022] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of the rolling and compacting incense baking and drying machine in the present invention.

[0024] Figure 2 It is a side view of the electric heating rolling machine in the present invention.

[0025] Figure 3 It is a front view of the vibrating cooling screen powder conveying trough in the present invention.

[0026] Figure 4 It is a side view of the electromagnetic tightening machine in the present invention.

[0027] Figure 5 It is a front view of the incense baking and drying machine in the present invention.

[0028] Figure 6 It is a schematic diagram of the structure of the blanking chute in the present invention.

[0029] Figure 7 It is a front view of the assembled grading and impurity removing machine in the present invention.

[0030] Figure 8 For the present invention Figure 7 Enlarged view of part A in the figure.

[0031] Fig. 9 For the present invention Figure 8 Enlarged view of part B in the middle.

[0032] Fig.10 It is the front view of the weighing conveying trough in the present invention.

[0033] Fig.11 It is the front view of the assembling and leveling machine in the present invention.

[0034] Fig.12 The figure is an internal stereogram of the stacking machine of the present invention (the arrow represents the direction of rotation).

[0035] Fig.13It is a top view of the first guide rib and the second curved surface structure guide rib in the present invention (the arrow represents the rotation direction).

[0036] Fig.14 It is a three-dimensional diagram of the mixing and splicing mechanism of the present invention (the arrow represents the rotation direction).

[0037] Fig.15 It is a front view of the air separation, classification and impurity removal machine in the present invention.

[0038] Fig.16 It is a side view of the air separation, classification and impurity removal machine of the present invention.

[0039] Fig.17 It is a top sectional view of the crescent-shaped wind direction guiding device in the present invention.

[0040] Fig.18 It is a front view of the oxygenated alcoholization packaging machine in the present invention.

[0041] Fig.19 This is a front view of the tea can cleaning and sterilizing cabin of the present invention.

[0042] Fig. 20 It is a side view of the H-shaped hydraulic lifting rod in the present invention.

[0043] Fig.21 It is a front view of the canning and oxygen filling sealed cabin in the present invention.

[0044] Fig. 22 It is a front view of the tea canning tunnel in the present invention.

[0045] Fig.23 It is a front view of the weighing and canning device in the present invention.

[0046] Fig.24 For the present invention Fig.23 Enlarged view of part C in the middle.

[0047] Fig.25 It is a structural diagram of the first base in the present invention.

[0048] Fig.26 It is a structural diagram of the oxygenation device in the present invention.

[0049] Fig. 27 It is the structural diagram of the metering cylinder in the present invention.

[0050] Fig.28 It is the front view of the capping machine in the present invention.

[0051] Fig.29 It is a cross-sectional view of the can cover in the present invention. DETAILED DESCRIPTION

[0052] Examples, such as Figures 1 to 29As shown, a continuous production line for refining, processing and oxygenating packaging of Dahongpao tea comprises a rolling, compacting, roasting and drying machine 1, a blending, grading and impurity removing machine 2 and an oxygenating, alcoholizing and packaging machine 3 which are sequentially connected through a conveying device. In order to realize graded oxygenating packaging, 3-5 mobile material storage platforms are also equipped to continuously carry out weighing, tea filling, oxygenating, film sealing and capping sealing packaging.

[0053] The specific structure of each device and its connection relationship are described in detail below.

[0054] like Figures 1 to 6 As shown, the rolling, compacting, roasting and airing rope machine 1 comprises an electric heating rolling machine 11, a vibration cooling sieve powder conveying trough 14, an electromagnetic compacting machine 12 and a roasting and airing rope machine 13 which are arranged in sequence.

[0055] The feeding end of the electric heating rolling machine 11 is provided with a feeding conveyor belt 15, and the feeding conveyor belt 15 is a 10-mesh stainless steel screen conveyor belt. A feeding hopper 151 is provided at the feeding end of the feeding conveyor belt 15, and the feeding hopper 151 is made of stainless steel. The feeding conveyor belt 15 conveys tea leaves upward at an angle of 20-25 degrees, and can screen out small insects, mud, dust and other debris entrained in the tea leaves during the inclined conveying process.

[0056] The electric heating rolling machine 11 includes an electric heating roller 111 and an electric heating device 112 arranged below the electric heating roller 111. The electric heating roller 111 is 2.1m long and 80cm in diameter. In order to make the roller conduct heat quickly and increase the rolling force, the electric heating roller is made of titanium steel material, so that the initial Dahongpao raw tea can be made into thick strips of tea by a long roller with a large diameter and fast heat conduction. The electric heating device 112 includes a first U-shaped groove 1121 supported below the electric heating roller 111, and 6 electric heating pipes 1122 arranged in the first U-shaped groove 1121. In order to avoid burning tea leaves, a layer of titanium steel plate 1123 is laid above the electric heating pipe 1122 of the first U-shaped groove 1121, and the electric heating roller 111 is embedded on the titanium steel plate 1123 of the first U-shaped groove 1121 and rotated, and the thermal conductivity is reduced by "double-layer titanium steel composite heat conduction" to perform electric heating rolling.

[0057] The vibrating cooling and screening conveying trough 14 comprises a rectangular four-corner cast iron vibration frame 145, and a trough body 141 arranged on the vibration frame 145. The conveying trough body 141 is 2.1m long, 0.7m wide, 0.5m deep, and a 10-12 mesh screen 142 is arranged at the bottom of the trough. One end of the trough body 141 is connected to the tea outlet of the electric heating rolling machine 11, and the other end of the trough body 141 is connected to the tea inlet of the electromagnetic compacting machine 12. The cooling and screening of broken tea powder and the conveying of tea leaves are carried out by blowing cold air and vibrating.

[0058] Cooling fans 144 are arranged at intervals on the tank body 141. The cooling fans 144 are F-ST45G type bladeless cooling fans, equipped with an intelligent temperature control system, and the wind speed and air volume can be set by the user. A total of 3 cooling fans are configured, arranged above the tank body 141 at intervals of 65 cm, and the cooling fans blow cold air into the tank to quickly cool down the tea leaves after the electric heating rolling and volatilize the hot air.

[0059] A flat vibrator 143 is also installed at the bottom of the trough body 141, which is arranged at the feeding end of the trough body 141, and generates vibrations with a frequency of 50-60 times / min and an excitation force of 250-300kgf, driving the screen to vibrate to remove broken tea leaves and dissipate heat and volatilize hot air.

[0060] In order to achieve efficient heat dissipation and conveying of sieve residue, a hydraulic lifter 146 is further provided between the feed end of the trough body 141 and the vibration frame 145. The trough body is tilted downward by 3-4 degrees by the hydraulic lifter 146, so that the broken tea leaves produced during rolling can be removed by inclined vibration, heat can be dissipated, and the tea leaves after cooling and sieving can be smoothly fed into the electromagnetic compacting machine 12.

[0061] The electromagnetic compacting machine 12 includes an electromagnetic roller 121 and an electromagnetic device 122. The electromagnetic roller 121 is a double-layer structure, with an outer layer of a carbon steel material layer 1211 and an inner layer of a ceramic material layer 1212. In order to prevent the buds and leaves from breaking, the length of the electromagnetic roller 121 is reduced to 1.8m, and the diameter of the cylinder is reduced to 60cm. The characteristics of the ceramic inner wall of the small roller are smooth, low friction, slow heat conduction, and low radiation heat energy. The strips are tightened by slow tightening to improve the aroma. In order to avoid damage to the ceramic inner wall by electromagnetic radiation heat, a 2-4 mm heat conduction gap 1213 is set between the carbon steel material layer 1211 and the ceramic material layer 1212. The electromagnetic radiation thermal conductivity is weakened by gap heat conduction, so that the ceramic inner wall can be tightened in a low radiation heat energy environment.

[0062] The electromagnetic device 122 includes a second U-shaped groove 1221 supported below the electromagnetic roller 121, and an electromagnetic auxiliary heating device 1222 arranged in the second U-shaped groove 1221. The electromagnetic radiation device is used to solve the problem that the conventional electric heating pipe is easy to corrode the carbon steel shell to produce rust. The second U-shaped groove 1221 is a double-layer structure, the inner layer is made of carbon steel material, and the outer layer is made of silicate fiber asbestos material. Two-thirds of the electromagnetic roller 121 is embedded in the second U-shaped groove 1221, which can reduce the expansion of electromagnetic radiation heat energy, reduce heat loss, and improve the efficiency of tea drying and compacting.

[0063] A Z-shaped lifting conveyor belt 110 is arranged between the discharge end of the electromagnetic compacting machine 12 and the feed end of the roasting and drying rope machine 13. The roasting and drying rope machine 13 comprises a roasting and drying rope box 131, which is 2.4m long, 1.6m wide and 3.2m high. A far-infrared aroma roasting and fragrance layer 132, a cold air drying rope layer 133, a microwave aroma sterilization layer 134 and a dynamic and static drying rope layer 135 are arranged in sequence from top to bottom in the roasting and drying rope box 131. The compacted tea leaves are fed into the far-infrared aroma roasting and fragrance layer 132 through the Z-shaped lifting conveyor belt 110, and then transported to the next layer in sequence.

[0064] The infrared aroma roasting layer 132 uses a 20-mesh stainless steel screen to carry and transport tea leaves, the cold air drying layer 133 uses a 14-mesh concave-convex stainless steel vibrating screen to carry and transport tea leaves, the microwave aroma sterilization layer 134 uses a 20-mesh stainless steel vibrating screen to carry and transport tea leaves, and the dynamic and static drying layer 135 uses a 10-mesh concave-convex stainless steel screen to carry and transport tea leaves. In order to smoothly input the tea leaves of the upper layer into the conveyor belt of the next layer, a drop trough 136 is provided below the tea outlet of each conveyor belt. The drop trough 136 is a flat notch structure, and a leaf leveling roller 137 is provided in the drop trough 136. A group of leaf leveling claws 1371 are evenly provided on the leaf leveling roller 137, and the tea leaves are evenly dropped to the lower conveyor belt through the rotation of the leaf leveling roller. In order to overcome the technical obstacle of manual stirring of tea leaves on multi-layer conveyor belts, a forward stirring robot 138 and a reverse stirring robot 139 are respectively provided above the screen conveyor belts of the far-infrared aroma roasting layer 132 and the microwave aroma sterilization layer 134 to replace manual stirring of tea leaves, so that the tea leaves on the conveyor belt can be evenly stirred by far-infrared aroma roasting and microwave aroma sterilization.

[0065] Further described far-infrared aroma-raising and baking layer 132, the height of layer edge is 60cm, at 50-60cm above layer edge, 65-70cm interval, arrange 3 TB250*100*70mm type far-infrared light ceramic radiation lamps 16, to irradiate the Dahongpao primary processed tea on the conveyor belt downwards, carry out infrared light aroma-raising and baking.In order to make full use of infrared light source, the inner wall of described far-infrared aroma-raising and baking layer 132 is provided with a layer of reflective glass 17, can both stop the tea leaves on the screen conveyor belt from falling out, can also reflect infrared light into tea leaves and carry out reflected light aroma-raising and baking.The technical effect produced by setting far-infrared aroma-raising and baking layer 132: can not only replace the traditional baking cage charcoal fire baking and baking process, and can utilize the penetration force of far-infrared irradiation downwards, radiation force, temperature control effect, resonance effect, promote the volatilization of the flower fragrance compounds such as phenylethyl alcohol, β-ionone, α-ionone and linalool contained in tea leaves, improve its "rock rhyme" and rich orchid fragrance.

[0066] The cold air drying layer 133 has a layer edge height of 50 cm, and a 20-mesh stainless steel screen is used on the left and right layer edges to prevent cold air from drifting out and tea leaves from falling out. Two F-ST45G type fanless air-conditioning fans 18 are arranged 40-50 cm above the layer edge, with an interval of 1.1-1.2 m, to blow cold air downward to the tea leaves on the conveyor belt for cooling. The technical effect of setting the cold air drying layer 133 is: the combined effect of blowing cold air and the vibration of the concave-convex screen is used to dynamically cool down and dry the far-infrared aroma-enhancing roasted Dahongpao tea, and eliminate the hot air.

[0067] Further, the microwave aroma-enhancing sterilization layer 134 has a layer edge height of 70 cm, and 2 microwave generators 19 are arranged at 50-60 cm above the layer edge, 1.1-1.2 m apart, and 1 microwave generator 19 is arranged crosswise at 1.1-1.2 m apart on the left and right sides of the box, so as to form a three-dimensional microwave radiation space, and perform three-dimensional microwave aroma-enhancing sterilization on the conveyor belt. In order to make full use of microwave heat energy, the left and right layer edges of the box are made of stainless steel reflective flat plates, so that the microwaves are reflected to the tea leaves on the conveyor belt for reflection microwave aroma-enhancing again. The technical effect of setting the microwave aroma-enhancing sterilization layer: the characteristics of microwave heating fast, short heating time, large radiation penetration, and simultaneous aroma-enhancing sterilization of the inside and outside of the tea leaves can be fully utilized to continue to improve the rich orchid fragrance of Dahongpao tea, and kill microbial bacteria.

[0068] The dynamic and static drying layer 135 has a layer edge height of 50 cm, and the left and right layer edges are made of 20-mesh stainless steel screens to prevent the tea leaves from falling out. The screen is driven to vibrate by a vibrator to cause the tea leaves to bounce on the concave and convex stainless steel screens, and a dynamic drying process with ventilation and air permeability is performed to screen out the remaining broken tea leaves, or a static natural drying process is performed. The technical effect of setting the dynamic and static drying layer is: through the process of cold air drying and the combination of dynamic and static natural drying, the entire drying process is automated, the drying steps can be simplified, the drying time can be shortened by half, and the problem of the traditional drying process being labor-consuming, time-consuming, and high cost is solved.

[0069] like Figures 7 to 17 As shown, the splicing, grading and impurity removing machine 2 comprises a spiral lifting conveyor 21, on the path of which a group of weighing conveying troughs 22 are arranged at intervals, a splicing and leveling machine 23 is connected to the discharge end of the spiral lifting conveyor 21, and a wind separation, grading and impurity removing machine 24 is connected to the discharge end of the splicing and leveling machine 23.

[0070] The spiral conveyor 21 is an APOLLO type chain plate type spiral conveyor, comprising a spiral conveyor frame 211, a spiral conveying trough 212 fixed on the spiral conveyor frame 211, and a spiral conveyor belt 213 arranged in the spiral conveying trough 212. The spiral conveyor 21 conveys tea leaves from bottom to top, and a group of weighing conveying troughs 22 are also arranged on the side of the spiral conveyor 21.

[0071] The weighing conveyor trough 22 comprises a trough body 221, a weighing conveyor belt 222, a weighing device 223 arranged below the trough body 221, and a tea storage hopper 224 arranged at the feeding end of the trough body 221. In order to make the tea leaves outputted from the weighing conveyor belt 222 evenly spread on the spiral conveyor belt 213, a tea output direction adjustment groove 225 is arranged at the discharging end of the trough body 221 to evenly spread the tea leaves.

[0072] In order to stir and mix the tea leaves on the spiral lifting conveyor 21, a forward and reverse stirring robot 25 wrapped in a food-grade latex jacket is arranged in front of the tea outlet of each weighing conveying trough 22 to imitate the left and right hands of a person to stir the tea leaves.

[0073] The blending and stacking machine 23 includes an upright rotating blending and stacking cone 231, whose cylinder is 1.5-1.8m high and 50-55cm in diameter. A feed port 2311 is provided at the top of the cylinder, with a diameter of 30-35cm. Two-thirds of the upper part of the cylinder is a cylindrical structure, and one-third of the lower part is a conical structure. The diameter of the bottom discharge port 2312 is 35-40cm, so as to collect the tea leaves for uniform stacking and centralized output. The rotating blending and stacking cylinder 231 realizes rotating blending and stacking through the cooperation of a driven gear 2313, a driving motor 234, and a driving gear 2341. An umbrella-shaped rotating distributor 232 is provided below the feed port 2311 in the blending and stacking cylinder 231. The connecting shaft 2351 is rotated by a driving motor 235 to drive the rotating distributor 232 to rotate. The rotating blending and stacking cylinder 231 and the rotating distributor 232 rotate in opposite directions. The rotary distributor 232 is provided with a group of first cambered guide ribs 2321 in the opposite direction of the rotary distributor 232. When the tea leaves fall onto the rotary distributor 232, they move toward the first guide ribs 2321 and downwards under the action of the rotating centrifugal force, and the mixture is turned over under the action of the cambered surface of the first guide ribs 2321. Below the rotary distributor 232, a mixing and blending mechanism 233 is provided for catching the tea leaves on the rotary distributor 232 and blending them again. The mixing and blending mechanism 233 includes a lower conical cylinder 2331, and a group of second cambered guide ribs 2332 in the opposite direction of the rotating blending and stacking cylinder 231 are provided on the inner wall of the conical cylinder 2331, so that the tea leaves are mixed twice and then output through the discharge port 2312. The technical effect of setting up a blending and stacking machine is that the machine body occupies a small space, and the tea leaves are mixed multiple times by rotating the blending and stacking cylinder and the rotary distributor forward and reversely, combined with the first guide ribs and the second arc-structured guide ribs, which can significantly improve the uniformity of the mixing and stacking.

[0074] The wind selection, grading and impurity removal machine 24 includes a wind selection, grading and impurity removal box 241 and a blower 2410. The wind selection, grading and impurity removal box 241 is 1.8m long, 65cm wide and 1.2m high. A trumpet-shaped feed port 243 is provided at the front top of the wind selection, grading and impurity removal box 241 to receive tea leaves from the discharge port 2312 for grading and impurity removal. The front three quarters of the wind selection, grading and impurity removal box 241 are set as a rectangular parallelepiped structure for wind selection and grading; the rear quarter is a cone structure, so that the cone can be used to tighten the blowing in the wind selection box, forcing the heavier tea leaves to fall into the sorting chamber at the junction of the rectangular box and the cone for grading, and at the same time, tea fragments, tea worm eggs, dust and debris are removed from the cone outlet 244. The air classification and impurity removal box 241 is provided with a first baffle plate 245 and a second baffle plate 246, which divide the air classification and impurity removal box 241 into three sorting chambers, namely, the first sorting chamber 2411, the second sorting chamber 2412 and the third sorting chamber 2413 from front to back, and each sorting chamber is provided with a corresponding tea outlet, so that tea leaves of different grades are output. In order to collect the floating tea fragments, tea worm eggs, dust and debris in time, a long strip-shaped debris collection bag with a 50-60 mesh stainless steel screen is also provided at the outlet of the cone, which can collect the floating debris into the debris bag, and will not cause the secondary pressure to affect the air classification.

[0075] The hair dryer 2410 is a variable frequency hair dryer, provided with a main air duct 242, a left air inlet duct 247 and a right air inlet pipe 248. The air outlet of the main air duct 242 is located at the front end of the air selection, grading and impurity removal box 241. The air outlets of the left air inlet duct 247 and the right air inlet pipe 248 are located on the two side walls below the feed inlet 243 of the air selection, grading and impurity removal box 241, and are located below the air outlet of the main air duct 242, so as to stir the fallen tea leaves again. A crescent-shaped wind direction guide device 249 and a rotating fan blade 2491 are provided in the middle position of the front end of the main air duct 242. The rotating fan blade 2491 concentrates the wind force, gathers the tea leaves falling from the feed inlet, makes them float upward in a semi-arc shape, and uses the heavy-light free fall method to fall into the three air selection chambers for classification. In order to better classify the tea leaves drifting in the semi-arc shape, the first baffle plate 245 near the feed port 243 is arranged vertically, and the second baffle plate 246 is arranged obliquely to expand the spacing of the second sorting chamber 2412, blocking the slightly heavier tea leaves from falling into the second sorting chamber 2412, and allowing the lighter tea leaves to float over the baffle plate at the junction of the box body and the cone, and fall into the third sorting chamber 2413, while promoting tea fragments, tea worm eggs, dust and other debris to float out from the cone outlet 244. The technical effect of setting up the wind selection, grading and impurity removal machine is to solve the problems of the existing wind selection, grading and impurity removal processes requiring more mechanical equipment, complicated operation steps, and high tea making costs.

[0076] like Figures 18 to 29As shown, the oxygenation and alcoholization packaging machine 3 includes a tea can cleaning and sterilization cabin 31 and a canning and oxygenation sealing cabin 32 connected to the tea can cleaning and sterilization cabin 31 .

[0077] Specifically, the tea can cleaning and sterilizing chamber 31 is provided with a tea can conveyor belt 33, a light sterilizing tunnel 34 and an oxygen ion wind washing machine 35. The tea can conveyor belt 33 is a stainless steel chain conveyor belt with a length of 1.5-2.5 meters and a width of 50-60 centimeters. In order to improve the sterilization, washing and lifting and conveying efficiency of the tea cans, an H-shaped hydraulic lifting rod 331 is provided below the discharge end of the conveyor belt. The conveying angle of the tea can conveyor belt 33 can be adjusted by raising or lowering the height of the hydraulic lifting rod, so that the sterilized and washed tea cans can be outputted in an inclined and stable manner and docked with the bottom-supporting base conveyor belt 38.

[0078] The tea can cleaning and sterilizing cabin 31 is also provided with a light sterilization tunnel 34 made of organic glass with a length of 0.8-1.2 meters and a width of 45-50 centimeters, so that the tea cans can pass through the light sterilization tunnel 34 for light sterilization. In the light sterilization tunnel 34, two ultraviolet ozone sterilization lamps 341 are arranged at intervals of 30-40 centimeters to perform ultraviolet and ozone dual comprehensive sterilization on the input tea cans, which can kill more than 90% of microorganisms and bacteria within 1-2 minutes. Two oxygen ion wind washing machines 35 are also provided in the tea can cleaning and sterilizing cabin 31, one is arranged at 10-15 cm from the exit of the light sterilization tunnel 34, and the other is arranged at the discharge end of the tea can conveyor belt 33, so as to efficiently remove dust and debris inside and outside the tea cans, and at the same time, remove the ultraviolet ozone odor caused by the ultraviolet ozone sterilization lamp 341.

[0079] The canning and oxygenation sealed cabin 32 is provided with a weighing and canning device 39, an oxygenation device 310, a film sealing machine 312 and a capping machine 313 in sequence.

[0080] The canning and oxygenating sealed cabin 32 is a low-temperature oxygenating cabin with a cabin body of 4.5 meters in length, 3.2 meters in width and 3.8 meters in height, and a white tempered glass inner wall and a rock wool polyurethane outer wall. In order to prevent leakage of tea canning and low-temperature oxygen filling gas, a tea canning tunnel 37 is provided in the middle of the canning and oxygenating sealed cabin 32, and a tea and personnel entry and exit passage is provided at the bottom, and an induction cabin door is provided for closed low-temperature oxygenating packaging.

[0081] The canning and oxygenating sealed cabin 32 is provided with a bottom-supporting base conveyor belt 38 docked with the tea can conveyor belt 33. Two five-finger-shaped intelligent manipulators are provided between the tea can conveyor belt 33 and the bottom-supporting base conveyor belt 38. The tea cans are grabbed by moving the swing arm in a left-right cross-circulation manner, so that the cleaned and sterilized tea cans are placed on the bottom-supporting base conveyor belt 38 and transported to the canning and oxygenating sealed cabin 32. The oxygen supply machine 314 configured in the canning and oxygenating sealed cabin 32 is a PSA oxygen generator, which is arranged outside the canning and oxygenating sealed cabin 32 and can input oxygen with a gas volume of 100-150 cubic meters / h and a purity of more than 90% through the first oxygen supply main pipe 315. The oxygen supply machine 314 is provided with a second oxygen branch pipe 317, which provides oxygen to the oxygen ion wind washer 35. The refrigerator 36 configured in the canning and oxygenating sealed cabin 32 is a KZ-40WFLD screw type refrigeration unit, which is arranged outside the canning and oxygenating sealed cabin 32, and its cold air pipe is installed in the middle part of the top of the cabin body, and cold air is blown downward to reduce the temperature in the cabin to 5-8°C for low-temperature oxygenation to improve oxygen utilization. The use of the canning and oxygenating sealed cabin produces technical effects: using the characteristics of clean and solid, non-conductive, corrosion-resistant, and low-temperature oxygen-rich, the tea is canned and oxygenated and sealed, and no odor or harmful substances will affect the quality.

[0082] The weighing and canning device 39 comprises a tea storage hopper 391, a weighing device 392, an electronic weighing platform 393, and a tea inlet tube 394 arranged in a three-dimensional manner. The Dahongpao tea is fed into the tea storage hopper 391 through a 10-mesh stainless steel mesh conveyor belt of an elevator 319. The tea storage hopper 391 is filled with oxygen through a third oxygen branch pipe 318 to make oxygen-enriched tea. The bottom-supporting base conveyor belt 38 is a stainless steel chain rotary conveyor belt with a length of 2.5-3.5 meters and a width of 30-40 centimeters. A first base 381 matching the size of a tea can is arranged on the bottom of the first base 381, and a movable bottom plate 382 and a first cylinder 384 for controlling the opening and closing of the movable bottom plate 382 are arranged at the bottom of the first base 381 through a connecting hinge 383. The oxygen-enriched Dahongpao tea falls from the vibrating tea storage hopper 391 to the electronic weighing platform 393 of the weighing device 392 for quantitative weighing, and then is input into the tea inlet tube 394 through the left flip plate 3931 and the right flip plate 3932 of the weighing platform 393, and falls from the tea inlet tube 394 to the empty tea can on the bottom-supporting base conveyor belt 38, completing the weighing and canning process. The technical effect produced by the weighing and canning device is: the tea storage hopper, weighing device, tea inlet tube and bottom-supporting base conveyor belt are arranged three-dimensionally from top to bottom in sequence, and the weighing and tea filling process is automated by using the effect of free fall, which reduces the conveying equipment and occupied space, and at the same time, the bottom-supporting base conveyor belt is used to steadily transport the weighed tea cans to the oxygenation device for oxygenation packaging.

[0083] The oxygenation device 310 includes an oxygen mask and a syringe. The oxygen mask 3107 is a stainless steel circular cover, and its diameter is slightly larger than the mouth of the tea can by 1-2 mm, so as to tightly cover the mouth of the tea can for oxygenation and prevent the oxygen in the tea can from leaking out. The oxygenation device 310 is also provided with a mechanical arm 3108 for driving the oxygen mask 3107 to move up and down. The mechanical arm 3108 is a mechanical arm that simulates the structure of a human arm, and is arranged above the bottom-supporting base rotary conveyor belt 38. By simulating the up and down movement of a human arm, the oxygen mask 3107 is driven to move up and down for oxygenation. When the bottom-supporting base conveyor belt 38 transports the weighed tea can to the bottom of the oxygenation device 310, the upper and lower mechanical arms 3108 drive the oxygen mask 3107 to move downward and buckle on the tea can for oxygenation. When the oxygenation is completed, the upper and lower mechanical arms 3108 drive the oxygen mask 3107 to move upward and separate from the tea can, and then oxygenate another tea can.

[0084] The injector comprises a metering cylinder 3101, an injection tube 3102 arranged at the front end of the metering cylinder 3101 and an injection plug 3103 arranged in the metering cylinder 3101. In order to be able to fill tea cans of different volumes with different set amounts of oxygen, a scale mark is arranged in the metering cylinder 3101, and oxygen is injected according to the scale of the set amount through the injection plug 3103. The injection plug 3103 is also connected to a first oxygen branch pipe 3105 to supply oxygen, and a compression spring 3104 is connected to the injection plug 3103 to push it to inject oxygen. When the tea can is oxygenated, the movable bottom plate 382 corresponding to the bottom of the first base 381 is opened, and the tea can falls into the L-shaped oxygen-enriched channel 311 below for output and film sealing. The injection tube 3102 and the first oxygen branch pipe 3105 are both provided with a flow control valve 3106.

[0085] The film sealing machine 312 is an automatic hydraulic tea can film sealing machine. The machine has the characteristics of not needing to use high temperature sealing, but only using 0.2-0.3MPa normal temperature hydraulic pressure to bond and seal the ultra-transparent polyester pressure-sensitive sealing film, and overcomes the technical obstacle that the oxygenated tea can is flammable and explosive and cannot use high temperature film sealing from the equipment aspect. The film sealing machine 312 is also provided with a film sticking manipulator 3121, which is a second-generation fully automatic five-finger structure manipulator. After the precise calculation of the PLC system and the cooperation of multiple sensors, the manipulator can simulate the five fingers of a human hand to cover the sealing film on the mouth of the tea can exactly. The film sticking manipulator 3121 is arranged at the exit of the L-shaped oxygen-enriched channel 311. When the tea can is output from the horizontal conveyor belt 321, the film sticking manipulator 3121 immediately covers the sealing film on the mouth of the tea can accurately to achieve rapid sealing to prevent oxygen leakage.

[0086] The capping machine 313 includes a suction cup manipulator 3131 for grabbing the can lid and a capping device 3132. The suction cup manipulator 3131 is a manipulator provided with a suction cup and a rotating shaft. The sealed tea can is input to the bottom of the capping machine 313. The can lid 200 provided with a nano bamboo charcoal fiber sealing pad 201 is first sucked on the suction cup manipulator 3131 by the suction action of the suction cup manipulator 3131, and then the suction cup manipulator 3131 is driven by the rotating shaft to put the can lid 200 on the mouth of the sealed tea can. The capping device 3132 is a cover-type rotary capping device, which uses the capping device 3132 to tightly cover the outer cover of the tea can and tighten the can lid in a clockwise direction to seal it. The technical effect produced by configuring the film sealing machine and the capping machine: using the five-finger film-sticking manipulator to cover the polyester pressure-sensitive film can avoid bringing microorganisms and bacteria into the tea can to affect the quality of the tea leaves and the annealing and alcoholization effect. The use of ultra-transparent polyester pressure-sensitive sealing film and hydraulic film sealing machine not only solves the technical problem that oxygenated tea cans cannot be sealed with high-temperature films due to their flammability and explosion, but also allows the color changes of the Dahongpao tea in the tea can to be observed, which plays a certain role in timely controlling the aging process of the tea. The use of an outer cover with a nano-bamboo charcoal fiber sealing pad can prevent heat, moisture, and electromagnetic waves from entering the tea can from the outer cover and affecting the quality of the tea, and also overcomes the disadvantage of the current plastic sealing pad having a "peculiar smell".

[0087] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A continuous production line for refining, processing and oxygen-filling packaging of Dahongpao tea, characterized by: It comprises a rolling, compacting, roasting and drying machine (1), a blending, grading and impurity removing machine (2) and an oxygenating, alcoholizing and packaging machine (3) which are connected in sequence through a conveying device; The rolling and compacting roasting and drying rope machine (1) comprises an electric heating rolling machine (11), an electromagnetic compacting machine (12) arranged after the electric heating rolling machine (11), and a roasting and drying rope machine (13) connected to the electromagnetic compacting machine (12) for roasting and drying ropes; the roasting and drying rope machine (13) comprises a roasting and drying rope box (131), and the roasting and drying rope box (131) is provided with a far-infrared aroma roasting and drying layer (132), a cold air drying rope layer (133), a microwave aroma sterilization layer (134), and a dynamic and static drying rope layer (135) in sequence from top to bottom; The blending, grading and impurity removing machine (2) comprises a spiral lifting conveyor (21), a group of weighing conveying troughs (22) are arranged at intervals on the path of the spiral lifting conveyor (21), a blending and leveling machine (23) is arranged at the discharge end of the spiral lifting conveyor (21), and a wind selection, grading and impurity removing machine (24) is arranged at the discharge end of the blending and leveling machine (23); The oxygenation and alcoholization packaging machine (3) comprises a tea can cleaning and sterilization cabin (31) and a canning and oxygenation sealing cabin (32) connected to the tea can cleaning and sterilization cabin (31).

2. The continuous production line for refining, processing and oxygenating packaging of Dahongpao tea as claimed in claim 1, characterized in that: The tea can cleaning and sterilizing chamber (31) is provided with a tea can conveyor belt (33) and a light sterilizing tunnel (34). The light sterilizing tunnel (34) is provided with an ultraviolet ozone sterilizing lamp (341). The tea can conveyor belt (33) passes through the light sterilizing tunnel (34). An oxygen ion wind washer (35) is respectively provided at the exit of the light sterilizing tunnel (34) and the discharge end of the tea can conveyor belt (33) to respectively clean and sterilize the inside and surface of the tea can.

3. The continuous production line for refining, processing and oxygenating packaging of Dahongpao tea as claimed in claim 2, characterized in that: The canning and oxygenating sealed cabin (32) is connected to a refrigerator (36); a tea canning tunnel (37) is arranged above the interior of the canning and oxygenating sealed cabin (32); a bottom-supporting base conveyor belt (38) is arranged in the tea canning tunnel (37); a feeding end of the bottom-supporting base conveyor belt (38) extends to the outside of the canning and oxygenating sealed cabin (32) and docks with the tea can conveyor belt (33); a weighing and canning device (39) and an oxygenating device (310) are arranged in sequence in the tea canning tunnel (37); an L-shaped oxygen-enriched channel (311) is arranged below the oxygenating device (310); a film sealing machine (312) and a capping machine (313) are docked in sequence at the discharge end of the L-shaped oxygen-enriched channel (311); The bottom-supporting base conveyor belt (38) is provided with a group of first bases (381) adapted to the size of the tea cans, a movable bottom plate (382) is provided at the bottom of the first base (381), a connecting hinge (383) is provided at one end of the movable bottom plate (382), and a first cylinder (384) for controlling the opening and closing of the movable bottom plate (382) is also provided, and the movable end of the first cylinder (384) is hingedly fixed to the other end of the movable bottom plate (382) relative to the connecting hinge (383).

4. The continuous production line for refining, processing and oxygenating packaging of Dahongpao tea as claimed in claim 1, characterized in that: A group of far-infrared ceramic radiation lamps (16) are arranged above the far-infrared aroma-enhancing and aroma-roasting layer (132), and a layer of reflective glass (17) is arranged on the inner wall of the far-infrared aroma-enhancing and aroma-roasting layer (132); a group of fanless cold air fans (18) are arranged on the cold air drying layer (133), and a microwave generator (19) is arranged on the microwave aroma-enhancing and sterilizing layer (134).

5. The continuous production line for refining, processing and oxygenating packaging of Dahongpao tea as claimed in claim 1, characterized in that: The electric heating roller (11) comprises an electric heating roller (111) and an electric heating device (112) arranged below the electric heating roller (111); the electric heating roller (111) is made of titanium steel material.

6. The continuous production line for refining, processing and oxygen-filling packaging of Dahongpao tea as claimed in claim 1, characterized in that: The electromagnetic compacting machine (12) comprises an electromagnetic roller (121) and an electromagnetic device (122); the electromagnetic roller (121) is a double-layer structure, the outer layer is a carbon steel material layer (1211), and the inner layer is a ceramic material layer (1212); a heat-conducting gap (1213) is provided between the carbon steel material layer (1211) and the ceramic material layer (1212).

7. The continuous production line for refining, processing and oxygen-filling packaging of Dahongpao tea as claimed in claim 1, characterized in that: The blending and stacking machine (23) comprises a rotating blending and stacking cylinder (231), the top of the rotating blending and stacking cylinder (231) is provided with a feed inlet (2311), and the bottom is provided with a discharge outlet (2312), a rotating distributor (232) is provided in the blending and stacking cylinder (231) below the feed inlet (2311), and a mixing and blending mechanism (233) is provided below the rotating distributor (2312) in the rotating blending and stacking cylinder (231) for receiving tea leaves on the rotating distributor (232) and blending them again, and the rotating blending and stacking cylinder (231) and the rotating distributor (232) rotate in opposite directions; The rotary distributor (232) on the blending and stacking machine (23) is an umbrella-shaped structure, and a group of first guide ribs (2321) with a rotation direction opposite to that of the rotary distributor (232) are arranged on the rotary distributor (232). The mixing and blending mechanism (233) comprises a conical cylinder (2331) at the lower part of the rotating blending and stacking cylinder (231), and a group of second guide ribs (2332) with a rotation direction opposite to that of the rotating blending and stacking cylinder (231) are arranged on the inner wall of the conical cylinder (2331).

8. The continuous production line for refining, processing and oxygen-filling packaging of Dahongpao tea as claimed in claim 1, characterized in that: The air classification and impurity removal machine (42) comprises an air classification and impurity removal box (241), one end of the air classification and impurity removal box (241) is provided with a main air duct (242), an upper portion of one end of the main air duct (242) is provided with a feed port (243), and the other end is provided with a cone air outlet (244), a first baffle plate (245) and a second baffle plate (246) are provided in the air classification and impurity removal box (241), and the first baffle plate (245) and the second baffle plate (246) divide the air classification and impurity removal box (241) into a first sorting chamber (2411), a second sorting chamber (2412) and a third sorting chamber (2413); A left air inlet pipe (247) and a right air inlet pipe (248) are also connected to the two side walls of the air selection, classification and impurity removal box (241) below the feed port (243); a crescent-shaped wind direction guide device (249) is provided at the front end of the main air duct (242); and a rotating fan blade (2491) is provided inside the crescent-shaped wind direction guide device (249).

9. The continuous production line for refining, processing and oxygen-filling packaging of Dahongpao tea as claimed in claim 1, characterized in that: The oxygenating device (310) comprises a metering cylinder (3101), an injection tube (3102) arranged at the front end of the metering cylinder (3101), and an injection plug (3103) arranged in the metering cylinder (3101), wherein the injection plug (3103) is connected to a compression spring (3104), and the injection plug (3103) is also connected to a first oxygen branch pipe (3105); the injection tube (3102) and the first oxygen branch pipe (3105) are both provided with a flow control valve (3106).

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