Production line for preparing dried chloranthus spicatus flowers by using exogenous biological enzyme

Abstract

The utility model discloses a production line for preparing dried chloranthus spicatus flowers by utilizing exogenous biological enzyme. The production line comprises a screen type flower growing machine, an electric heating enzyme-deactivating machine, an enzyme-adding cold air flower airing machine, a microwave drying machine and an intelligent nitrogen-filling packaging machine which are sequentially connected through a conveying device. The screen type flower growing machine, the electric heating water removing machine, the enzyme adding cold air flower airing machine, the microwave drying machine and the intelligent nitrogen filling packaging machine are sequentially connected through the conveying device to form the continuous production line for preparing the dried chloranthus spicatus flowers, so that the problems that the existing dried chloranthus spicatus flower manufacturing equipment is manually carried and operated and works in a single machine, and the quality is difficult to control are solved; moreover, the working efficiency can be improved by 2-3 times, the production cost is reduced by 40-50%, and the prepared dry chloranthus flowers are emerald green in color, complete in spica, sweet and mellow in taste, fragrant in orchid fragrance and superior in quality, and can be widely applied to the field of preparation of the dry chloranthus flowers.

Description

Technical Field

[0001] This utility model relates to the field of flower tea processing technology, and in particular to a production line for preparing dried flowers of pearl orchid using exogenous biological enzymes. Background Technology

[0002] Pearl orchid flowers contain compounds such as β-linalool, methyl acetate, indole, eugenol, caffeine, methyl jasmonic acid, and geraniol. Long-term consumption is believed to have effects such as dispelling wind and dampness, reducing inflammation and killing bacteria, beautifying the skin, and lowering lipids and aiding weight loss. Therefore, in recent years, the sales of dried pearl orchid flowers have increased significantly, and the production area has expanded rapidly, showing a booming market. However, current methods for preparing dried pearl orchid flowers generally involve spreading them on bamboo trays, drying them over charcoal fires or using dryers, and rely on manual handling and single-machine operation, resulting in low efficiency, high production costs, and difficulty in controlling quality. Therefore, how to select and configure advanced machinery to form a complete and efficient continuous production line to improve the efficiency of pearl orchid flower processing and facilitate quality control is a pressing technical problem that pearl orchid flower processing enterprises need to solve. Summary of the Invention

[0003] The purpose of this invention is to provide a production line for preparing dried pearl orchid flowers using exogenous biological enzymes, thereby solving the problems of low processing efficiency and difficulty in quality control of existing pearl orchid flowers.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a production line for preparing dried flowers of pearl orchid using exogenous biological enzymes, including a screen-type flower growing machine, an electric heating blanching machine, an enzyme-added cold air drying machine, a microwave dryer, and an intelligent nitrogen-filled packaging machine connected in sequence by a conveying device.

[0005] Specifically, the screen-type flower growing machine includes a flower growing and cooling trough, which has an upper and lower two-layer structure. The upper layer is a temperature-controlled and humidified flower growing layer, and the lower layer is an antioxidant and natural flower growing layer. A humidifier is installed at the feed end of the temperature-controlled and humidified flower growing layer, and an enzyme additive is installed at the feed end of the antioxidant and natural flower growing layer. Temperature and humidity sensors are installed within both the temperature-controlled and humidified flower growing layers, and a hot and cold air fan is also included. The cold air fan has two cold air pipes and one hot air pipe. The outlets of the hot air pipe and one cold air pipe are located at the feed end of the temperature-controlled and humidified flower growing layer, and the outlet of the other cold air pipe is located at the feed end of the antioxidant and natural flower growing layer. Through the coordinated operation of the hot and cold air fans, ultrasonic humidifier, temperature and humidity sensors, etc., the temperature and humidity of the flower growing and spreading process are regulated, enabling intelligent flower spreading and growing.

[0006] The electrothermal blanching machine includes an electrothermal blanching tank, an aluminum alloy louvered conveyor belt installed inside the tank, and a set of heating tubes located below the tank. To inhibit the enzymatic oxidation of the flower spikes, prevent darkening and loss of fragrance, the electrothermal blanching machine can intelligently set the blanching temperature and time. The high temperature of the electric heating rapidly kills the activity of biological oxidative enzymes in the flower spikes, promoting the release of internal moisture and greenness, and achieving initial drying. To prevent direct heat scorching of the flower spikes, a 1-1.2cm thick stainless steel barrier plate is placed 3-5cm above the heating tubes, providing indirect electrothermal blanching by blocking heat radiation. Simultaneously, its high thermal conductivity ensures rapid heat transfer to the aluminum alloy louvered conveyor belt, ensuring even and thorough blanching of the flower spikes.

[0007] The enzyme-added cold-air flower drying machine includes an antioxidant drying box, a cold air blower, and a controller. To achieve continuous cold-air and natural flower drying, the drying box is designed with a three-layer open structure. From top to bottom, it consists of a first cold-air enzyme-added antioxidant layer, a second cold-air enzyme-added antioxidant layer, and a natural drying antioxidant layer. Each layer has a drying conveyor belt at its bottom. The conveyor belt for the first cold-air enzyme-added antioxidant layer rotates clockwise, the conveyor belt for the second cold-air enzyme-added antioxidant layer rotates counter-clockwise, and the conveyor belt for the natural drying antioxidant layer rotates clockwise, continuously transporting the *Philodendron chinense* flowers from top to bottom for antioxidant drying. To ensure even heat dissipation and ventilation during drying, the drying conveyor belt is a nanofiber conveyor belt with a wavy structure and laser micropores, allowing the flower spikes on the conveyor belt to dissipate heat and moisture through slight bouncing during the drying process. To achieve continuous conveying, an enzyme-added feeding and conveying device is installed between the feed end of the enzyme-added cold air drying machine and the discharge port of the electric heating blanching machine, connecting the discharge port of the third conveyor belt to the tunnel entrance of the microwave drying and sterilization machine, so that the spread-out flower spikes can enter the tunnel for drying and sterilization.

[0008] The microwave dryer has a tunnel-type structure with a microwave output power ≥20KW, a microwave output frequency of 2450MHz, and a microwave input apparent power ≤25KVA. It oscillates at 2.45 billion times per second, allowing the flower spikes on the conveyor belt to penetrate and dry their internal moisture through the special thermal and non-thermal effects of microwaves, promoting aroma volatilization and killing microorganisms. To mitigate the risk of the flower spikes breaking due to excessively rapid drying caused by direct microwave radiation, a 100-150 mesh nano-ceramic radiation shield is fitted over the microwave radiation outlet of the microwave generator housing. Utilizing its high-temperature resistance and high strength, this shield weakens the microwave radiation intensity, reducing the breakage rate and ensuring the flower spikes remain intact and aesthetically pleasing. To facilitate the feeding and output of flower spikes, the microwave drying and sterilization machine is equipped with a drying and sterilization conveyor belt. To prevent the flower spikes from absorbing odors or undergoing antagonistic reactions with metal ions during the drying process, the conventional plastic and stainless steel drying and sterilization conveyor belt has been replaced with a double-layered conveyor belt composed of nanofiber and bamboo mats. This not only prevents plastic odors from seeping into the flower spikes but also avoids metal ion antagonistic reactions, and imparts a subtle bamboo fragrance. For continuous conveying, the outlet of the drying and sterilization conveyor belt inside the tunnel is connected to an inclined lifting conveyor belt, allowing the dried flowers to be fed into a sterile storage silo and then packaged using an intelligent nitrogen-filling packaging machine.

[0009] The intelligent nitrogen-filling packaging machine includes a can-washing and sterilizing machine, a weighing and filling machine, a nitrogen filling machine, and a sealing and capping machine arranged in sequence. To ensure clean and sterile ceramic jars are filled with dried flowers, a trumpet-shaped hot air can-washing machine is used to rinse and sterilize the jars. For precise nitrogen filling and preservation, a capped syringe-type nitrogen filler is used. The nitrogen filling amount is set according to the scale markings on the measuring cylinder, and nitrogen gas is precisely injected into the ceramic jar through the filling needle. To achieve aseptic packaging, a can-grabbing robot removes the ceramic jar from the slot for rinsing and sterilization; a film-applying robot covers the jar opening with a seaweed polyester film for sealing; and a capping robot places the outer cap onto the sealed jar opening and tightens it clockwise.

[0010] The beneficial effects of this utility model are as follows: This utility model connects a screen-type flower growing machine, an electric heating blanching machine, an enzyme-added cold air flower drying machine, a microwave dryer, and an intelligent nitrogen-filling packaging machine in sequence through a conveying device to form a continuous production line for preparing dried pearl orchid flowers. This not only solves the problem that existing pearl orchid flower making equipment relies on manual handling and single-machine operation, making it difficult to control the quality, but also increases work efficiency by 2-3 times and reduces production costs by 40-50%. The resulting dried pearl orchid flowers are emerald green in color, have intact flower spikes, a sweet and mellow taste, and a fragrant orchid aroma, making them of superior quality. This invention employs a screen-type flower-growing machine, which allows harvested fresh flowers to regain their vitality and continue to bloom and release fragrance; it uses an electric heating blanching machine, which utilizes high-temperature electric heating to quickly kill the activity of biological oxidases in the flower spikes, causing the internal water and green odor to dissipate and achieve initial drying; it uses a microwave drying machine, which does not damage the internal nutrients and health-promoting substances and ensures product quality and safety; and it uses an intelligent nitrogen-filling packaging machine for nitrogen-filling packaging, which can maintain its bright green color and fragrant orchid aroma for 5 years when stored at room temperature, extending the shelf life by 2-3 years compared to conventional sealed packaging methods.

[0011] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0012] Figure 1 This is a schematic diagram showing the connection of the various devices in this utility model.

[0013] Figure 2 This is a schematic diagram of the structure of the screen-type flower growing machine in this utility model.

[0014] Figure 3 This is a schematic diagram of the feed hopper in this utility model.

[0015] Figure 4 This is a schematic diagram of the structure of the electrothermal blanching machine in this utility model.

[0016] Figure 5 This is a schematic diagram of the structure of the enzyme-added cold air flower drying machine of this utility model.

[0017] Figure 6 This is a schematic diagram of the structure of the microwave dryer in this utility model.

[0018] Figure 7 This is a schematic diagram of the nitrogen-filled packaging machine in this utility model.

[0019] Figure 8 This is a schematic diagram of the weighing and filling machine in this utility model.

[0020] Figure 9 This is a schematic diagram of the nitrogen filling machine in this utility model. Detailed Implementation

[0021] Examples, such as Figures 1 to 9 As shown, a production line for preparing dried pearl orchid flowers using exogenous biological enzymes is provided for the continuous processing of pearl orchid flowers. It mainly consists of the following equipment connected by a conveying device: two screen-type flower-growing machines 1, one electric heating blanching machine 2, one enzyme-adding cold air drying machine 3, one microwave dryer 4, and one intelligent nitrogen-filling packaging machine 5. This invention enables the automation and continuous processing of dried pearl orchid flowers, thereby improving processing efficiency and the quality of the dried pearl orchid flowers.

[0022] The following describes in detail the connection relationships of the various devices in this production line and the specific structure of the devices themselves:

[0023] like Figure 2 , 3 As shown, the screen-type flower growing machine 1 includes a flower growing and cooling trough 11. The feeding end of the flower growing and cooling trough 11 is provided with a feeding device 19, which includes a feeding hopper 191 and an inclined conveyor belt 192. The feeding hopper 191 is a stainless steel trough, with a length of 1.6 meters, a width of 0.8 meters, and a depth of 0.6 meters. It is inclined downwards at 12-15° above the feeding end of the inclined conveyor belt 192. A rotating push rod 193 for pushing the flower spikes is provided inside the feeding hopper 191, and a set of push claws 194 are provided on the rotating push rod 193. The inclined conveyor belt 192 is a 10-12 mesh stainless steel screen conveyor belt, which is inclined upward at 5-7 degrees to feed the pearl orchid flower spikes in the feed hopper 191 into the flower cooling trough 11 for antioxidant flower cultivation. During the inclined conveying process, the 10-12 mesh stainless steel screen automatically removes dust, mud, small insects and other debris from the flower spikes to improve their cleanliness.

[0024] The flower-growing and cooling trough 11 has a two-layer structure, with a length of 6.5m, a width of 1.8m, and a height of 2.2m. The upper layer is a temperature-controlled and humidified flower-growing layer 12, and the lower layer is an antioxidant-resistant natural flower-growing layer 13. Both the temperature-controlled and humidified flower-growing layer 12 and the antioxidant-resistant natural flower-growing layer 13 are equipped with 30-40 mesh stainless steel mesh conveyor belts at their bottom. The upper and lower stainless steel mesh conveyor belts rotate in opposite directions, and the lower stainless steel mesh conveyor belt 111 receives the flower spikes from the upper stainless steel mesh conveyor belt 111, thus achieving automated and intelligent flower growing and cooling. The input flower spikes first undergo temperature-controlled and humidified growth in the temperature-controlled and humidified flower-growing layer 12 to restore the vitality of the harvested flowers, and then enter the antioxidant-resistant natural flower-growing layer 13 for antioxidant natural growth, promoting continued opening and fragrance.

[0025] It also includes a hot and cold air blower 18, which is a dual-structure hot and cold air blower with both cold and hot air chambers. This blower can output hot air at 25-30℃ and cold air at 10-15℃ to regulate the temperature for growing flowers. The hot and cold air blower 18 is equipped with two cold air pipes 181 and one hot air pipe 182. The outlets of the hot air pipe 182 and one cold air pipe 181 are located at the inlet end of the temperature-controlled and humidified growing layer 12, and blow horizontally towards the outlet end. If the spring temperature is low, hot air can be blown to heat the plant; if the summer temperature is too high, cold air can be blown to cool it down. The outlet of the other cold air pipe 181 is located at the inlet end of the antioxidant natural growing layer 13, and blows horizontally towards the outlet end. If the summer temperature is too high, cold air can be blown to cool it down, allowing for temperature-controlled and antioxidant growing of flowers in both spring and summer. To simulate the natural state of hot and cold air, fine ventilation mesh of 100-120 mesh is provided on the end face of the air outlet of each cold air duct 181 and hot air duct 182 to balance the air volume and transform it into a gentle breeze that blows into the upper and lower flower layers.

[0026] The temperature-controlled and humidified flower-growing layer 12 is equipped with a humidifier 14 at its feed end. If the humidity of the flower-growing layer is too low, the humidifier sprays moisture. The antioxidant natural flower-growing layer 13 is equipped with an enzyme adder 15 at its feed end, which sprays a sodium vitamin C solution onto the flower spikes for antioxidant natural flower spreading. In summer, if the natural flower-growing layer is dry and has low humidity, the amount of sodium vitamin C solution sprayed can be increased to achieve heavy-moisture antioxidant effects.

[0027] To monitor the temperature of the upper and lower flower-growing layers, temperature and humidity sensors 16 and intelligent controllers are installed in the temperature-controlled and humidified flower-growing layer 12 and the antioxidant natural flower-growing layer 13. The temperature and humidity sensors 16 are DENOD-GD200-TH type temperature and humidity detectors. The sensor probes of the DENOD-GD200-TH type temperature and humidity detectors are respectively arranged in the middle part of the temperature-controlled and humidified flower-growing layer 12 and the antioxidant natural flower-growing layer 13, so as to transmit the measured temperature and humidity signals to the intelligent controller, which controls the air volume of the hot and cold air blower 18 to regulate the temperature and humidity of the temperature-controlled and humidified flower-growing layer 12 and the antioxidant natural flower-growing layer 13. The technical advantages of this utility model using a screen-type flower growing machine are: through the cooperation of hot and cold air blowers, humidifiers, enzyme additives, temperature and humidity sensors, etc., the temperature and humidity of flower growing and spreading can be regulated to achieve automation and intelligence in flower growing and spreading. It can also simulate the natural temperature and humidity environment in the early morning, so that the picked flowers can regain their vitality and continue to bloom and emit fragrance, and can maintain the quality characteristics of their flower spikes being emerald green and having a mellow and fragrant orchid scent.

[0028] like Figure 4As shown, the electrothermal blanching machine 2 includes an electrothermal blanching tank 21. A horizontal conveyor belt 7 is installed between the discharge port of the flower cooling tank 11 and the electrothermal blanching tank 21. The flower spikes after antioxidant treatment are fed into the electrothermal blanching tank 21 for electrothermal blanching via the horizontal conveyor belt 7. Two screen-type flower treatment machines 1 are installed, respectively arranged on both sides of the electrothermal blanching machine 2. The pearl orchids are fed into the electrothermal blanching tank 21 for electrothermal blanching via their respective horizontal conveyor belts 7. During operation, the horizontal conveyor belt 7 on one side is conveyed first, followed by the horizontal conveyor belt 7 on the other side, so that the flower spikes after antioxidant treatment are continuously fed into the electrothermal blanching machine for blanching.

[0029] The electrothermal blanching tank 21 is made of cast iron, with a length of 2.5m, a width of 0.8m, and a depth of 0.9m. It has movable doors at both ends, which are closed during electrothermal blanching and opened for discharge. The electrothermal blanching tank 21 is equipped with a 10-12 mesh aluminum alloy louvered conveyor belt 22 to carry the flower spikes. After blanching is completed, the rotating aluminum alloy louvered conveyor belt 22 drives the flower spikes out of the electrothermal blanching tank 21.

[0030] The bottom of the electrothermal blanching tank 21 is equipped with three sets of heating tubes 23, each set consisting of two heating tubes arranged in a cross pattern. The three sets of heating tubes 23 are spaced 60-65cm apart and arranged at the bottom of the tank to provide electric heat to the upper electrothermal blanching tank 21 for blanching. To prevent direct electric heat from scorching the flower spikes, a stainless steel barrier plate 24 with a thickness of 1-1.2cm is placed 3-5cm above the heating tubes 23 to block electric heat radiation and prevent scorching of the flower spikes. At the same time, taking advantage of its fast thermal conductivity, the electric heat is quickly introduced into the aluminum alloy louver plate to blanch the flower spikes, ensuring even and thorough blanching.

[0031] Simultaneously, a control device is also installed, which connects to the horizontal conveyor belt, the aluminum alloy louvered conveyor belt, and the electric heating tube. The control device allows for the automatic setting of the feeding rate, the moving speed of the aluminum alloy louvered conveyor belt, the electric heating blanching temperature, and the electric heating blanching time, enabling intelligent electric heating blanching. The technical advantages of this electric heating blanching machine are: it can rapidly kill the activity of biological oxidases using high-temperature electric heating, inhibiting their enzymatic oxidation reaction, preventing the flower spikes from darkening or turning black, and preventing the loss of their elegant orchid fragrance. It also achieves preliminary drying. In particular, the use of stainless steel baffles for intermittent heat conduction blanching not only promotes even and thorough blanching of the flower spikes but also prevents the flower spikes from being scorched.

[0032] An enzyme-adding cold air flower drying machine 3 and an electrothermal blanching machine 2 are connected by an enzyme-adding feeding and conveying device 8. The enzyme-adding feeding and conveying device 8 includes an enzyme-adding hopper 81 and a Z-shaped lifting conveyor belt 82. The enzyme-adding hopper 81, made of oak and shaped like a trumpet, is positioned at the bottom of the Z-shaped lifting conveyor belt 82 and connected to the discharge port of the electrothermal blanching machine 2. This allows the flower spikes after electrothermal blanching to undergo their first addition of catalase solution for cooling and antioxidant effects within the enzyme-adding hopper 81. The use of oak in the enzyme-adding hopper avoids antagonistic reactions between metal ions and catalase, preventing any impact on the antioxidant effect. The Z-shaped lifting conveyor belt 82 is a nanofiber vertical conveyor belt that allows the flower spikes after catalase addition to be fed into the antioxidant flower drying box 31 for antioxidant drying without any metal ion antagonistic reaction.

[0033] like Figure 5 As shown, the enzyme-added cold air flower drying machine 3 includes an antioxidant flower drying box 31, which is made of oak. The antioxidant flower drying box 31 has a three-layer open structure to facilitate ventilation in each layer. From top to bottom, it consists of a first cold air enzyme-added antioxidant layer 32, a second cold air enzyme-added antioxidant layer 33, and a natural spreading antioxidant layer 34. Each layer has a spreading conveyor belt 35 at the bottom. The spreading conveyor belt 35 is a nanofiber conveyor belt. To ensure even heat dissipation and ventilation of the flower spikes during drying, the spreading conveyor belt 35 has a wavy structure and laser micropores, allowing the flower spikes on the spreading conveyor belt 35 to dissipate heat and moisture through slight bouncing during the spreading process. To prevent the flower spikes from falling off the conveyor belt during transport, 18-20cm high skirts are provided on both sides of each layer to prevent the flower spikes from being thrown out and to collect them during transport.

[0034] An enzyme atomizer 36 and a cooler 6 are also provided. The cooler 6 is a DAKC-20 type cooler with two second cooler ducts 61. The outlets of the two second cooler ducts 61 are respectively located at the inlets of the first cooler enzyme-adding antioxidant layer 32 and the second cooler enzyme-adding antioxidant layer 33, and the outlets are of a trough structure to blow cool air onto the first cooler enzyme-adding antioxidant layer 32 and the second cooler enzyme-adding antioxidant layer 33 to dissipate heat and remove moisture from the flower spikes on the spreading conveyor belt 35. In order to overcome the technical obstacle that direct air blowing can easily cause the flower stems to separate and break, a flow valve 62 is installed on the second cooler duct 61, and a 30-40 mesh titanium steel baffle 63 is provided at the outlet of the second cooler duct 61 to convert the direct air blowing into a natural breeze blowing onto the flower spikes on the conveyor belt.

[0035] The enzyme atomizer 36 is equipped with two types of atomizing nozzles: a two-fluid air atomizing nozzle 361 and a steam rotating air nozzle 362. The enzyme atomizer 36 sprays catalase solution into the flower spikes in a micro-mist form for antioxidant effects. The two-fluid air atomizing nozzle 361 is inserted 8-10 cm into the enzyme addition trough 81 for the first spray enzyme addition into the flower spikes. The flow rate and enzyme addition angle of the two-fluid air atomizing nozzle 361 are adjustable. Two steam rotating air nozzles 362 are respectively arranged at the outlets of the second cold air pipes 61 of the first cold air enzyme antioxidant layer 32 and the second cold air enzyme antioxidant layer 33. Using a fan-shaped steam nozzle, the catalase mist, heated to 25-30°C, is blown into the trough along with the cold air, entering the flower spikes in a "mist" form for the second spray enzyme addition. The heated catalase mist produces a highly efficient antioxidant effect.

[0036] It is also equipped with a controller, which has a digital control screen. Users can set the following parameters via the touchscreen: drying temperature, drying humidity, drying time, cold air volume, and conveyor belt speed, enabling intelligent enzyme-added antioxidant drying. The technical advantage of this enzyme-added cold air drying machine lies in its use of two different enzyme atomizing devices: multi-angle enzyme spraying with a two-fluid air atomizing nozzle and thermal enzyme spraying with a steam rotating nozzle. This significantly improves the antioxidant drying effect.

[0037] To achieve continuous conveying, the outlet of the naturally dried antioxidant layer 34 is connected to the tunnel entrance of the microwave drying and sterilization machine 4, so that the dried flower spikes can enter the tunnel for drying and sterilization.

[0038] like Figure 6As shown, the microwave drying and sterilizing machine 4 is a tunnel-type microwave drying and sterilizing machine with a microwave output power ≥20KW, a microwave output frequency of 2450MHz, and a microwave input apparent power ≤25KVA. It oscillates at 2.45 billion times per second, allowing the flower spikes on the conveyor belt to penetrate their internal moisture through the special thermal and non-thermal effects of microwaves, promoting aroma volatilization and killing microorganisms and bacteria. The microwave dryer 4 is connected to a microwave generator 9. To mitigate the risk of direct microwave radiation causing excessively rapid drying and flower spike breakage, a 100-150 mesh nano-ceramic radiation shield 91 is fitted over the microwave radiation outlet of the microwave generator 9 housing. Utilizing its high-temperature resistance and high strength, this shield weakens the microwave radiation intensity, reducing the breakage rate of the flower stems and ensuring the flower spikes remain intact and aesthetically pleasing. To facilitate the feeding and output of flower spikes, the microwave drying and sterilization machine 4 is equipped with a drying and sterilization conveyor belt 41. To prevent the flower spikes from absorbing odors and undergoing antagonistic reactions with metal ions during the drying process, the conventional plastic and stainless steel drying and sterilization conveyor belt is replaced with a double-layer conveyor belt composed of nanofiber and bamboo mats. This not only prevents plastic odors from seeping into the flower spikes but also avoids metal ion antagonistic reactions, and imparts a delicate bamboo fragrance. The technical advantages of this tunnel-type microwave drying and sterilization machine are: it maintains the bright green color of the flower spikes and enhances the orchid fragrance without damaging their internal nutrients and health-promoting substances. In particular, the nano-ceramic radiation shielding plate on the outer shell of the microwave generator can weaken the microwave radiation intensity and reduce the breakage rate of the flower stems; the double-layer conveyor belt 41 composed of nanofiber and bamboo mats avoids the introduction of odors and adverse metal ion antagonistic reactions, and also imparts a delicate bamboo fragrance.

[0039] To achieve continuous conveying, the outlet of the drying and sterilization conveyor belt in the tunnel is connected to the storage bin 521 on the weighing and filling machine 52 via the inclined lifting conveyor belt 10, so that the dried and sterilized pearl orchid flowers can be input into the storage bin 521.

[0040] like Figures 7 to 9 As shown, the intelligent nitrogen-filling packaging machine 5 includes a washing and sterilizing machine 51, a weighing and filling machine 52, a nitrogen filling machine 53, and a sealing and capping machine 54 arranged in sequence.

[0041] The can washing and sterilizing machine 51 includes a first porcelain can conveyor belt 511, a hot air can washing machine 512 and a can gripping robot 513 arranged above the first porcelain can conveyor belt 511. The hot air can washing machine 512 has a funnel-shaped structure and can output a high temperature of 80-85℃. The can gripping robot 513 takes the porcelain can off the porcelain can conveyor belt 511, faces the hot air outlet of the hot air can washing machine 512, rotates 180 degrees clockwise and 180 degrees counterclockwise, and uses the output high temperature of 80-85℃ to wash away the impurities and odors in the porcelain can and kill microorganisms and bacteria, so that it can be cleaned and sterile for filling with dried pearl orchid flowers.

[0042] A second ceramic can conveyor belt 55 is installed below the weighing and filling machine 52, the nitrogen filling machine 53, and the sealing and capping machine 54. The ceramic cans are sequentially passed under these three machines via the second ceramic can conveyor belt 55. A robotic arm transfers the ceramic cans from the first ceramic can conveyor belt 511 to the second ceramic can conveyor belt 55.

[0043] The weighing and filling machine 52 is a vertical weighing and filling integrated machine, including a storage bin 521, an electronic weighing platform 522 located below the storage bin 521, and a telescopic conveyor cylinder 523 located below the electronic weighing platform 522. After hot air rinsing and sterilization, the ceramic jar is conveyed to the weighing and filling machine 52 by the second ceramic jar conveyor belt 55. The telescopic conveyor cylinder 523 is inserted into the mouth of the ceramic jar, the valve of the storage bin 521 is automatically opened, and the dried flowers of the pearl orchid fall onto the electronic weighing platform 522. The set weighing weight is performed, and after the weighing is completed, the platform outlet is automatically opened, and the dried flowers fall directly into the ceramic jar through the telescopic conveyor cylinder 523. The telescopic conveying cylinder 523 includes an upper feeding cylinder 5231 and a lower feeding cylinder 5232 sleeved outside the upper feeding cylinder 5231. A push-pull cylinder 5233 is also fixedly installed on the upper feeding cylinder 5231. The movable end of the push-pull cylinder 5233 is connected to the lower feeding cylinder 5232, thereby driving the lower feeding cylinder 5232 to move up and down, realizing telescopic movement.

[0044] The nitrogen filling machine 53 is a capped needle-type nitrogen filling machine, consisting of a telescopic cap 531, a nitrogen filling needle 532, and a nitrogen inlet pipe 533. The telescopic cap 531 is made of stainless steel, and its diameter matches the opening of the ceramic container to ensure a tight seal for nitrogen filling. A telescopic rod 5311 is connected to the upper end of the telescopic cap 531, which drives the cap 531 to move up and down. The telescopic rod 5311 can adopt the same structural design as the telescopic feed cylinder 523. The nitrogen filling needle 532 is mounted on the telescopic cap 531 and includes an injection metering cylinder 5322 fixed to the cap 531, a needle 5321 at the front end of the injection metering cylinder 5322, an injection plug 5323 inside the injection metering cylinder 5322, and a pressure pump 5324 whose movable end is connected to the injection plug 5323 to control its up-and-down movement. To allow for the filling of ceramic jars of different volumes with varying amounts of nitrogen, the injection measuring cylinder 5322 is equipped with graduation markings, and nitrogen is injected according to the set graduations via the injection plug 5323. A nitrogen inlet pipe 533 is also connected to the injection plug 5323 to supply nitrogen. One end of the nitrogen inlet pipe 533 is fixed to the injection plug 5323, and the other end is connected to a nitrogen generator 11 to provide high-purity nitrogen (over 95%) to the ceramic jars. After weighing and filling, the ceramic jars are conveyed to the nitrogen filling machine 53 by a conveyor belt. The telescopic cover 531 descends to tightly cover the jar opening. The nitrogen filling needle 5321 is first inserted into the ceramic jar. The measuring cylinder is set with the nitrogen filling amount according to the graduation markings, and then a pressure pump pushes the injection plug inside the cylinder to precisely inject the set amount of nitrogen into the ceramic jar, thus performing nitrogen filling, deoxygenation, and preservation of dried flowers. After nitrogen filling is completed, the telescopic cover is raised to prepare for nitrogen filling and preservation of the next ceramic jar in the same way, thus continuously carrying out nitrogen filling and preservation operations.

[0045] The sealing and capping machine 54 further comprises a film-applying robot 541 and a capping robot 542. The film-applying robot 541 has a five-finger structure and, under the programmable control of a PLC system, can simulate the five fingers of a human hand to apply the film. The capping robot 542 has a full-hand structure and, under the programmable control of a PLC system, can simulate a human hand to suck the outer cap into its hand and cap it. When the ceramic can is filled with nitrogen, it is conveyed to the sealing and capping machine by a conveyor belt. The film-applying robot accurately covers the mouth of the ceramic can with the seaweed polyester sealing film. Then, the capping robot, driven by a rotating shaft, places the outer cap onto the sealed ceramic can mouth. Finally, the capping robot rotates clockwise via a rocker arm to tighten and seal the can. The advantages of this intelligent nitrogen-filling packaging machine are as follows: It is equipped with a horn-shaped hot air rinsing sterilizer, allowing for the filling of clean, sterile ceramic jars with dried pearl orchid flowers; a capped syringe-type nitrogen-filling machine, precisely filling the jars with high-purity nitrogen according to a set amount; and a sealing and capping machine, using robotic arms to simulate human hands, accurately covers the ceramic jar opening with a seaweed polyester sealing film and tightens it, providing an anaerobic, aseptic packaging experience for the dried pearl orchid flowers. Dried pearl orchid flowers preserved using this nitrogen-filling method can retain their vibrant green color and fragrant aroma for up to 5 years at room temperature, extending their shelf life by 2-3 years compared to conventional sealing packaging methods.

[0046] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A production line for preparing dried flowers of *Phyllostachys edulis* using exogenous biological enzymes, characterized in that: The screen type flower growing machine (1), the electric heat fixation machine (2), the enzyme added cold air flower airing machine (3), the microwave drying machine (4) and the intelligent nitrogen filling packaging machine (5) are sequentially connected by the conveying device. The screen type flower growing machine (1) controls temperature and humidity to grow and spread orchid flowers; the electric heat fixation machine (2) fixes the orchid flowers; the enzyme added cold air flower airing machine (3) continuously airs and naturally airs the fixed orchid flowers; the microwave drying machine (4) microwaves dries the orchid flowers to obtain dried orchid flowers; and the intelligent nitrogen filling packaging machine (5) realizes automatic nitrogen filling packaging of the dried orchid flowers.

2. The production line for preparing dry flowers of Bauhinia Blake using exogenous biological enzymes according to claim 1, characterized in that: The screen type flower growing machine comprises a flower growing and spreading tank (11), which is provided with an upper layer and a lower layer, the upper layer is a temperature and humidity controlled flower growing layer (12), and the lower layer is an antioxidant natural flower growing layer (13); a humidifier (14) is arranged at the feeding end of the temperature and humidity controlled flower growing layer (12), an enzyme adding device (15) is arranged at the feeding end of the antioxidant natural flower growing layer (13), a temperature and humidity sensor (16) is arranged in the temperature and humidity controlled flower growing layer (12) and the antioxidant natural flower growing layer (13), and a cold and hot air blower (18) is further arranged; the cold and hot air blower (18) is provided with two cold air pipes (181) and a hot air pipe (182), the outlet of the hot air pipe (182) and one of the cold air pipes (181) is arranged at the feeding end of the temperature and humidity controlled flower growing layer (12), and the outlet of the other cold air pipe (181) is arranged at the feeding end of the antioxidant natural flower growing layer (13).

3. The production line for preparing dry Anthocephalus chinensis flowers using exogenous biological enzymes according to claim 1, characterized in that: The electric heat fixation machine (2) comprises an electric heat fixation tank (21), an aluminum alloy fluted conveyor belt (22) arranged in the electric heat fixation tank (21) and a group of electric heat pipes (23) arranged below the electric heat fixation tank (21); a stainless steel barrier plate (24) is arranged between the electric heat pipes (23) and the electric heat fixation tank (21).

4. The production line for preparing dry Anthocephalus chinensis flowers using exogenous biological enzymes according to claim 1, characterized in that: The enzyme added cold air flower airing machine (3) comprises an antioxidant flower airing box (31), the antioxidant flower airing box (31) is sequentially provided with a first cold air enzyme added antioxidant layer (32), a second cold air enzyme added antioxidant layer (33) and a natural spreading and airing antioxidant layer (34) from top to bottom; a spreading and airing conveyor belt (35) is arranged at the bottom of each layer, the spreading and airing conveyor belt (35) is a nanometer fiber conveyor belt, the spreading and airing conveyor belt (35) has a wave structure and is provided with a laser micropore; a cold air blower (6) is further arranged, the cold air blower (6) is provided with two second cold air pipes (61), and the outlets of the two second cold air pipes (61) are arranged at the feeding ports of the first cold air enzyme added antioxidant layer (32) and the second cold air enzyme added antioxidant layer (33) respectively.

5. The production line for preparing dry flowers of Bauhinia Blake using exogenous biological enzymes according to claim 2, characterized in that: A feeding device (19) is arranged at the feeding end of the flower growing and spreading tank (11), the feeding device (19) comprises a feeding hopper (191) and an inclined conveyor belt (192). The feeding hopper (191) is a stainless steel tank structure, arranged above the feeding end of the inclined conveying belt (192) with a downward inclination of 12-15°, and a rotating pusher rod (193) for moving the flower stems is arranged in the feeding hopper (191), and a group of pusher claws (194) are arranged on the rotating pusher rod (193); the inclined conveying belt (192) is a 10-12 mesh stainless steel screen conveying belt, arranged with an upward inclination of 5-7 degrees.

6. The production line for preparing dry Anthocephalus chinensis flowers using exogenous biological enzymes according to claim 1, characterized in that: The intelligent nitrogen filling packaging machine (5) comprises a tank washing sterilization machine (51), a weighing and filling machine (52), a nitrogen filling machine (53) and a film sealing and cap screwing machine (54) arranged in sequence.

7. The production line for preparing dry flowers of Bauhinia Blake using exogenous biological enzymes according to claim 6, characterized in that: The tank washing sterilization machine (51) comprises a porcelain tank conveying belt (511), a hot air tank washing machine (512) arranged above the porcelain tank conveying belt (511) and a tank grabbing manipulator (513).

8. The production line for preparing dry flowers of Bauhinia Blake using exogenous biological enzymes according to claim 6, characterized in that: The weighing and filling machine (52) comprises a storage bin (521), an electronic scale platform (522) arranged below the storage bin (521) and a telescopic material conveying cylinder (523) arranged below the electronic scale platform (522); the telescopic material conveying cylinder (523) comprises a feeding cylinder (5231) and a lower feeding cylinder (5232) sleeved outside the feeding cylinder (5231), and a push-pull air cylinder (5233) is further fixedly installed on the feeding cylinder (5231), and the movable end of the push-pull air cylinder (5233) is connected with the lower feeding cylinder (5232).

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