CN110651850A - Processing production line for preparing small-pot green tea by using biological enzyme - Google Patents

Abstract

The invention discloses a processing production line for preparing small-pot green tea by using biological enzyme, which comprises a water-removing machine, a water-spreading machine, a rolling machine, a moisture regaining machine, a strip tidying machine, a color turning machine and a scenting chamber which are sequentially connected through a conveying device; a first vibration conveying groove is arranged between the enzyme deactivating machine and the enzyme spreading machine, and an ultrasonic humidifier filled with a glucose oxidase solution is arranged on the first vibration conveying groove; the green tea leaf spreading machine is a continuous dynamic green tea leaf spreading machine, the rolling machine is a drum-type electric heating rolling machine, a discharge port of the rolling machine is provided with a movable cover plate, and a group of guide blade ribs are arranged in the rolling machine; the car color machine is an electric heating roller car color machine and comprises a car color roller, wherein a high-carbon alloy cast iron layer with the carbon content of more than 2% is arranged on the inner wall of the car color roller. The invention can effectively improve the oxidation resistance of the tea leaves in the processing process, so that the processed tea leaves are emerald green in color, sweet and fragrant in taste and high in cleanliness, and can be widely applied to the field of green tea processing.

Description

Processing production line for preparing small-pot green tea by using biological enzyme

Technical Field

The invention relates to the technical field of tea processing, in particular to a processing production line for preparing small-pot green tea by using biological enzyme.

Background

The green tea is not only the tea with the most output and sale in China, but also the drinking tea which is very popular with consumers at home and abroad. However, the existing green tea manufacturing processes are numerous, the variety of mechanical equipment is complicated, and how to select tea manufacturing equipment which is well configured with each other to form a set of perfect green tea processing production line is a difficult problem which needs to be solved urgently by tea enterprises at present. In the existing green tea processing production line, tea leaves are exposed in the air for a long time in the processing process, and are easy to oxidize and discolor, reddish in color, sour in taste and poor in aroma. Meanwhile, the color and taste of the tea leaves are influenced to a greater or lesser extent by the material of the processing equipment, so that the tea leaves produced by the existing tea leaf processing production line can not keep the original emerald green color after being brewed, and the appearance of the tea leaves is influenced. In addition, the existing processing equipment is difficult to clean away the young insects, fluff and dust adhered to the surface of the tea, which is a difficult problem troubling the tea processing. For example, the existing method is to wash the tea leaves before processing, but the washing has great destructiveness on the quality of the tea leaves, and the quality of the tea leaves, namely the color and the taste flavor, cannot be guaranteed. In addition, the existing green tea processing production line can not adjust the flavor of the tea, so that the drinking population of the green tea is limited, the requirements of various client groups on the tea with different flavor types can not be met, and the factor influencing the sale quantity of the green tea is also large.

Disclosure of Invention

The invention aims to provide a processing production line for preparing small-pot green tea by using biological enzyme, and solves the problems that the oxidation resistance of the green tea produced by the existing green tea processing production line is weak, and the quality of the green tea cannot be effectively guaranteed.

The technical scheme adopted by the invention for solving the technical problems is as follows: a processing production line for preparing small-pot green tea by utilizing biological enzyme is characterized in that: comprises a fixation machine, a spreading machine, a rolling machine, a moisture regain machine, a strip tidying machine, a color turning machine and a scenting room which are connected in sequence through a conveying device; a first vibration conveying groove is arranged between the enzyme deactivating machine and the enzyme spreading machine, and an ultrasonic humidifier filled with a glucose oxidase solution is arranged on the first vibration conveying groove;

the green tea leaf spreading machine is a continuous dynamic green tea leaf spreading machine, the rolling machine is a drum-type electric heating rolling machine, a discharge port of the rolling machine is provided with a movable cover plate, and the inner wall of the rolling machine is provided with a group of guide blade ribs;

the car color machine is an electric heating roller car color machine and comprises a car color roller, wherein a high-carbon alloy cast iron layer with the carbon content of more than 2% is arranged on the inner wall of the car color roller.

Furthermore, two rolling machines are arranged side by side, a discharge port of the green spreading machine is provided with a first horizontal conveying belt, a first distribution conveying belt is arranged below the discharge port of the first horizontal conveying belt and is connected with a first driving motor for driving the first distribution conveying belt to rotate forward and backward, discharge ends on two sides of the first distribution conveying belt are respectively provided with a lifting machine, and the other end of the lifting machine is matched with a feed port of the rolling machine; the damping machine is 1, the discharge ports of the two rolling machines are respectively provided with a second horizontal conveying belt, a first vertical conveying belt which is vertically arranged relative to the second horizontal conveying belt is arranged below the discharge port of the second horizontal conveying belt, a discharge port at one end of the first vertical conveying belt is provided with a lifting machine, and the other end of the lifting machine is matched and connected with a feed port of the damping machine.

Further, the reason strip machine is provided with 4 side by side, has erect the removal proportioning machine in the top of strip machine, remove the proportioning machine including moving movable support, set up the slewing belt in moving movable support, moving movable support erects on the strip machine, for guaranteeing moving movable support operates steadily, can set up the guide rail on the strip machine, moving movable support bottom sets up the gyro wheel, and the gyro wheel removes in the guide rail, reduces and removes the resistance and guarantees can not deviate. In order to accurately control the movement amount of the movable batching machine, a screw rod and a screw rod motor driving the screw rod to rotate are further arranged on the carding machine, and a nut matched with the screw rod is fixedly arranged at the bottom of the movable support. The screw motor drives the screw to rotate, so as to drive the movable support to move back and forth, and tea leaves are conveyed to the tea inlet corresponding to the 4 tea carding machines. The car color machine is also provided with 4 parallel machines which just perform continuous strip tidying and car color with the strip tidying machine.

In order to improve the scenting efficiency as much as possible, three scenting chambers are arranged side by side, and the area of each scenting chamber is 25-35 square meters. A set of scenting barrels with the height of 1.2 meters and the diameter of 0.4 meter is arranged in the scenting chamber, and a temperature and humidity control device is arranged in the scenting chamber; the below of carding machine is provided with the perpendicular conveyer belt of second, and the discharge gate below of the perpendicular conveyer belt one end of second is provided with the storage hopper, and the bottom of storage hopper is provided with three discharge gate, and discharge gate department is provided with the valve, corresponds in the below of 3 discharge gates to be provided with 3 third horizontal conveyor, carries to three basement fragrance room respectively.

In order to remove impurities in the tea and ensure good cleanliness of the tea, a third vertical conveying belt in butt joint with discharge ports of the three scenting chambers is further arranged behind the scenting chamber, a color selector is arranged at the discharge port of the third vertical conveying belt, a second vibrating conveying groove is arranged behind the color selector, a negative ion fan is arranged on the second vibrating conveying groove, a sterilizer is connected with the second vibrating conveying groove, and an automatic racking machine is connected with the discharge port of the sterilizer.

In order to realize the good forming of the tea, the guide leaf ribs in the rolling forming machine are strip-shaped guide leaf ribs, the height of each guide leaf rib is 1.2cm, and the width of each guide leaf rib is 2 cm.

In order to make the tea strip more compact, the tea strip tidying machine is an electric heating tea strip tidying machine, the electric heating tea strip tidying machine comprises a screen disc and a strip tidying screen, the screen disc reciprocates, the strip tidying screen is arranged in the screen disc, a group of strip tidying grooves which are perpendicular to the tea conveying direction are continuously arranged on the strip tidying screen, the strip tidying grooves are of a U-shaped structure, the width of each strip tidying groove is 10cm, and the depth of each strip tidying groove is 14 cm.

In order to improve the effect of the scenting fragrance and ensure the quality of the scenting fragrance, the inner wall of the scenting fragrance chamber is covered with white tiles, the temperature and humidity control device comprises an air conditioner, a dehumidifier, a temperature and humidity sensor and a controller, and the controller can receive signals transmitted by the temperature and humidity sensor in real time and control the opening and closing of the air conditioner and the dehumidifier according to the temperature and humidity signals.

The invention has the beneficial effects that: according to the continuous production line, the ultrasonic humidifier filled with the glucose oxidase solution is arranged above the first vibration conveying groove in the first half section of the production line, enzyme adding and oxidation resistance are carried out on the tea leaves after enzyme deactivation, and therefore oxidation of the tea leaves in subsequent processes is relieved. The vibration conveying groove can bounce the tea leaves, so that the glucose oxidase and the tea leaves are mixed more uniformly. And then in the rolling stage, the rolling machine is changed, a movable cover plate is arranged at a discharge port of the rolling machine, and the cover plate is closed when the tea leaves are rolled, so that the tea leaves are rolled in a relatively closed environment, the contact between the tea leaves and oxygen is reduced, the oxidation resistance of the tea leaves is improved, and the tea leaves are kept green. Meanwhile, the tea leaves after being colored are more emerald by adjusting the structure of the coloring machine. Through the optimization of the mechanical equipment structure, the tea leaves can be kept from being oxidized in the processing process to the maximum extent, and a small green can of green tea with good taste and emerald color is formed. Meanwhile, the fragrance of the tea is improved by scenting, and different fragrance types can be adjusted by adopting different natural fragrance flowers according to the preferences of different customer groups, so that the customer groups of small-pot green tea are widened, and the sales volume is increased. After scenting, the tea leaves are treated by a color sorter to remove impurities such as tea stalks, flower and grass leaves, stem and bark shells, fibers, hairs and the like, then the fine foreign matters adhered to the surfaces of the buds and leaves are removed by a negative ion fan on a second vibration groove by utilizing positive and negative charge air flow of the negative ion fan, and then the fine foreign matters enter a sterilizer for sterilization, and finally the tea leaves are packaged into small cans by an automatic packaging machine, so that the good cleanliness of the tea leaves is ensured, and the quality of the tea leaves is improved.

The invention will be explained in more detail below with reference to the drawings and examples.

Drawings

FIG. 1 is a production line block diagram of the present invention.

FIG. 2 is a front view of the production line of the present invention.

FIG. 3 is a top view of the production line of the present invention.

Fig. 4 is a schematic structural view of the first vibratory conveying trough of the present invention.

Fig. 5 is a schematic structural view of the spreading machine of the present invention.

Fig. 6 is a schematic structural view of the roll forming machine of the present invention.

Fig. 7 is a schematic structural view of the carding machine of the invention.

FIG. 8 is a schematic view of the mobile dispensing machine of the present invention.

Fig. 9 is a schematic structural view of the car decorating machine of the present invention.

FIG. 10 is a top view of the scenting chamber of the present invention.

Fig. 11 is a schematic cross-sectional view of the scenting chamber of the present invention.

Detailed Description

Example 1: as shown in FIGS. 1 to 11, a processing line for manufacturing canned green tea using bio-enzymes is used for processing fresh leaves of single bud or single bud and single leaf initial development. Aims to improve the oxidation resistance of tea processing and improve the cleanliness of tea, thereby obtaining high-quality small-pot green tea.

The production line is mainly formed by connecting the following production equipment through a conveying device, as shown in figures 1 to 3, the production equipment comprises a water removing machine 1, a water spreading machine 2, a rolling machine 3, a moisture regaining machine 4, a strip tidying machine 5, a car dyeing machine 6, a scenting room 7, a color sorting machine 8, a sterilizing machine 9 and an automatic racking machine 10. The specific structure of each device and its connection flow are described in detail below.

The green removing is the first process of green tea processing, according to the characteristics of fresh leaf raw materials, the green removing machine 1 selected by the production line is a 6CSF-80 type electromagnetic green removing machine which is provided with an intelligent temperature control, speed regulation and timing device, so that the production line has the advantages of high thermal efficiency, high thermal efficiency of more than 95 percent, energy conservation of more than 10 percent, no dust and dust pollution, quick temperature rise, uniform heating, interval error of +/-2 ℃, and capability of reaching the preset green removing temperature only in 2-3 minutes. The water-removing machine can set the water-removing temperature and time according to the actual condition of tea leaves, and carry out high-efficiency water-removing operation. The product can rapidly kill polyphenol oxidase activity, and has no red leaf, yellow leaf, and burnt leaf, and green bud and leaf.

After the fixation is finished, the tea leaves after fixation are conveyed to a first vibration conveying groove 12 through a lifting machine 11, as shown in fig. 4, 2 ultrasonic humidifiers 13 containing glucose oxidase solution are installed on the first vibration conveying groove 12 in a staggered mode, and the 2 ultrasonic humidifiers 13 are installed on two side plates of the first vibration conveying groove 12 at intervals of 0.75 meter. The ultrasonic humidifier is a DRS-15A type ultrasonic humidifier, glucose oxidase liquid is atomized to 1-5 micron ultrafine particles through the high-frequency oscillation effect, and the ultrafine particles are uniformly added into tea leaves. First vibratory conveying groove 12 can make tealeaves vibration jump at the in-process of carrying to increase tealeaves and glucose oxidase's contact, make glucose oxidase and tealeaves mix more evenly. The mass ratio of the addition amount of the glucose oxidase to the tea is 0.2.5-0.3%, and the pH value of the glucose oxidase solution is 5-5.5. The glucose oxidase solution is added into the tea leaves after the enzyme deactivation, so that the temperature of the tea leaves after the enzyme deactivation can be rapidly reduced to 53-54 ℃, the glucose oxidase can rapidly play an anti-oxidation role, and the tea leaves are prevented from being oxidized in the subsequent processing process.

The tea leaves added with the enzyme are lifted into a green spreading machine 2 through a lifter 11 to be spread for 1.2-1.3 hours, the green spreading machine 2 is a 6CLHC-80 type dynamic green spreading machine, as shown in figure 5, the machine is of a three-layer box type structure, the machine is 6 meters long, 2.5 meters wide and 1.8 meters high, green spreading time and operation speed can be set intelligently, the tea leaves enter from the upper part of the green spreading machine 2 and are output from an outlet below the green spreading machine 2 through slow conveying, and the whole green spreading process is completed.

Spread out tealeaves after blue or green to carry and roll the shape to rolling the shape machine 3, roll shape machine 3 and be provided with two side by side, the discharge gate of spreading out green machine 2 is provided with first horizontal transport belt 14, and the below of the 14 discharge gates of first horizontal transport belt is provided with first distribution conveyer belt 15, and first distribution conveyer belt 15 connects and is provided with the first driving motor (not marking in the picture) that drives first distribution conveyer belt 15 just reverse, and the discharge end of 15 both sides of first distribution conveyer belt is provided with lifting machine 11 respectively, and the other end of lifting machine 11 is located the feed inlet department of one of them rolling shape machine 3, through the corotation and the reversal of first distribution conveyer belt 15, distributes tealeaves to on two rolling shape machines 3. The roll forming machine 3 is a 6CCPk-110 type drum-type electrothermal roll forming machine, as shown in fig. 6, a discharge port of the roll forming machine 3 is provided with a movable cover plate 301, and the upper end of the movable cover plate 301 is hinged with the roll forming machine 3. The roll forming machine 3 is further provided with a thrust cylinder 302 for pushing the movable cover plate 301 to turn over around a hinge at the upper end, and the thrust cylinders 302 are respectively arranged at the left side and the right side of the roll forming machine 3 and used for controlling the opening and closing of the movable cover plate 301. When the tea leaves are rolled, the movable cover plate 301 is closed to prevent air from entering the cylinder body, and closed type anti-oxidation rolling is carried out, so that the anti-oxidation capacity of the tea leaves can be further improved; when tea is taken out, the movable cover plate 301 is opened by the thrust cylinder 302 to take out tea in time. In the roll forming machine, evenly be provided with 6 guide vane muscle 303, guide vane muscle 303 is the guide vane muscle of rectangular shape, and the height of guide vane muscle 303 is 1.2cm, and the width is 2 cm. The leaf guiding ribs 303 are used for guiding the bud leaves to roll and rub along the leaf guiding ribs 303 under the action of electric heat, and water is dried and tightly tied into strips.

1 damping machine 4 is arranged behind the rolling machine 3, the damping machine 4 is a ZTS-400T type cold air damping machine, the machine length is 6 meters, the width is 2.6 meters, the height is 2.8 meters, and the damping machine is a four-layer box type structure. The machine is provided with a cold air blowing device, a timing device and a frequency modulation device, can intelligently set the moisture regaining time and the running speed, and carries out automatic cold air blowing dynamic moisture regaining. The discharge ports of the two rolling machines 3 are respectively provided with a second horizontal conveying belt 16, a first vertical conveying belt 17 which is vertically arranged relative to the second horizontal conveying belt 16 is arranged below the discharge port of the second horizontal conveying belt 16, a lifting machine 11 is arranged at a discharge port at one end of the first vertical conveying belt 17, the other end of the lifting machine 11 is matched with the feed port of the moisture regaining machine 4, and tea leaves on the two rolling machines 3 are conveyed to the moisture regaining machine 4 for dynamic moisture regaining.

The tea leaves after moisture regain are uniformly conveyed to 4 carding machines 5 for carding. The tea carding machine 5 is a 6CWD-120 type electric heating tea carding machine, and as shown in fig. 7, the electric heating tea carding machine comprises a screen disc 501 making reciprocating motion, a tea carding screen 502 arranged in the screen disc 501, an electric heating generator arranged at the bottom of the tea carding screen 502 supplies heat to a tea carding groove, a group of tea carding grooves 503 arranged perpendicular to the tea conveying direction are continuously arranged on the tea carding screen 502, the tea carding grooves 503 are of a U-shaped structure, the width of the tea carding grooves 503 is 10cm, and the depth of the tea carding grooves 503 is 14 cm. The tea carding groove 503 can increase the tea carding force, so that the tea can be made into a thin eyebrow shape by the reciprocating swing of the groove body and the friction of the groove wall under the action of electric heat. 4 strip tidying machine 5 sets up side by side, erects in the top of strip tidying machine 5 and is equipped with removal proportioning machine 18, as shown in fig. 8, remove proportioning machine 18 including moving support 181, set up slewing belt 182 in moving support 181, moving support 181 erects on strip tidying machine 5, for guaranteeing moving support 181 smooth operation, can set up the guide rail on strip tidying machine 5, moving support 181 bottom sets up the gyro wheel, and the gyro wheel removes in the guide rail, reduces and removes resistance and guarantee can not deviate. In order to accurately control the movement amount of the movable batching machine 18, the carding machine 5 is further provided with a screw 183 and a screw motor 184 for driving the screw 183 to rotate, and the bottom of the movable bracket 181 is fixedly provided with a nut 185 matched with the screw 183. The screw motor 184 drives the screw 183 to rotate, thereby driving the moving bracket 181 to move back and forth. The rotary conveyer belt 182 continuously conveys the tea leaves to the discharge port, and the tea leaves are uniformly distributed and conveyed to different tea carding machines 5 through the movement of the movable support 181.

4 car look machines 6 are arranged corresponding to the 4 strip tidying machines 5, and a lifting machine 11 is arranged between the discharge port of the strip tidying machine 5 and the feed port of the car look machine 6. The car-dyeing machine 6 is a 6CZST-130 type electric heating car-dyeing machine which is provided with an electric heating device, the low temperature of 40-55 ℃ can be set, and the bud leaves rotate clockwise at 35-45r/min for car-dyeing. In order to avoid secondary pollution to tea leaves during coloring and improve the coloring effect of the tea leaves, the structure of the coloring machine 6 is changed, as shown in fig. 9, the coloring machine 6 comprises a coloring roller 601, and a high-carbon alloy cast iron layer 602 with the carbon content of more than 2% is arranged on the inner wall of the coloring roller 601. The high carbon alloy cast iron layer 602 can solve the problems that the existing roller made of steel plates is easy to rust and pollute tea and can make tea dark in color. The high-carbon alloy cast iron layer 602 not only avoids the adverse effect of rust on the quality of tea, but also is beneficial to the friction between pectin compounds on the surface of the tea and the drum wall made of high-carbon cast iron, so that oily and bright emerald green color is formed, and the quality of the tea is further improved.

The colored tea leaves are conveyed to the scenting chamber 7 for scenting so as to improve the scent of the tea leaves, and different scents, such as chloranthus flower, jasmine flower, rose and the like, can be adopted for scenting according to the needs of customers. In order to facilitate continuous production and processing and improve the scenting effect, as shown in fig. 10 and 11, 3 scenting chambers 7 are arranged side by side, the area of each scenting chamber is 25-35 pm, the inner wall of each scenting chamber 7 is covered with a white ceramic tile 701, the ceramic glaze on the surface layer of each white ceramic tile 701 does not absorb aromatic substances, and also reflects fragrance to reduce fragrance loss, so that the scenting chambers 7 are filled with fragrance to facilitate tea adsorption. A set of scenting barrel 20 with the height of 1.2 meters and the diameter of 0.4 meter is arranged in the scenting chamber 7, tea leaves to be scented are placed in the scenting barrel 20, scenting flower packs 21 matched with the diameter of the scenting barrel 20 are placed in the scenting barrel 20 at intervals of 16-17cm along the depth direction of the tea leaves, and the scenting flower packs 21 are made of gauze with good air permeability. The top of the scenting barrel 20 is covered with a layer of breathable gauze 22. The scenting chamber 7 is internally provided with a temperature and humidity control device which comprises an air conditioner 23, a dehumidifier 24, a temperature and humidity sensor 25 and a controller 26. The controller 26 can receive the signal from the temperature and humidity sensor 25 in real time, and control the opening and closing of the air conditioner 23 and the dehumidifier 24 according to the temperature and humidity signal, so as to ensure the temperature and humidity required by scenting, and improve the scenting effect. The second vertical conveying belt 27 is arranged below the car dyeing machine 66, a storage hopper 28 is connected and arranged at a discharge port at one end of the second vertical conveying belt 27 through a hoisting machine 11, three discharge ports are arranged at the bottom of the storage hopper 28, a valve 29 is arranged at the discharge port, 3 third horizontal conveying belts 30 are correspondingly arranged below the 3 discharge ports, and are respectively conveyed into the three scenting chambers 7 and are manually loaded into the scenting barrel 20.

In order to improve the cleanliness of the tea, a third vertical conveying belt 31 which is in butt joint with the discharge ports of the three scenting chambers 7 is arranged behind the scenting chambers 7, and a color selector 8 is arranged at the discharge port of the third vertical conveying belt 31. The color selector 8 is a TW11R photoelectric color selecting impurity removing machine which utilizes the picking function of a recognition system to recognize and remove impurities such as tea stalks, flowers, grass leaves, stem shells, fibers, hairs and the like.

A second vibrating conveying groove 32 is arranged behind the color sorter 8, and a lifter 11 is arranged between a discharge hole of the color sorter 8 and a feed inlet of the second vibrating conveying groove 32; two anion fans 19 are arranged on the second vibration conveying groove 32, and the two anion fans 19 are respectively arranged on two sides of the second vibration conveying groove 32 and are arranged in a staggered mode. The air flow of positive and negative charges of the negative ion fan is utilized to remove the fine foreign matters adhered to the surfaces of the buds and the leaves, thereby ensuring that the cleanliness of the tea reaches more than 99.8 percent.

The discharge end of the second vibration conveying groove 32 is connected with a sterilizer 9 through a lifter 11, the sterilizer 9 is a YV-5 type microwave and light wave sterilizer, and the sterilizer performs microwave and light wave 'double sterilization' through electromagnetic microwaves with the frequency of 3000 megahertz to 300 gigahertz and light waves emitted by a light wave emitter to ensure the product quality safety.

The discharge port of the sterilizer 9 is connected with an automatic racking machine 10. The automatic packaging machine 10 is a CDTB-9 type intelligent packaging machine, and is used for packaging small-pot green tea through the procedures of filling, nitrogen filling, film sealing, boxing, bagging, plastic packaging, boxing and the like.

Example 2: the method for preparing the special-grade small-pot green tea by adopting the production line comprises the following steps:

(1) picking fresh leaves: the bud leaf picking standard is single bud.

(2) Electromagnetic enzyme deactivation: inputting the picked fresh leaves into an electromagnetic de-enzyming machine, setting the de-enzyming temperature to be 276-278 ℃, de-enzyming time to be 6-6.5 minutes, and rapidly killing the activity of oxidase in the tea leaves through electromagnetic de-enzyming.

(3) Ultrasonic enzyme adding antioxidation: the mass ratio of the addition amount of the glucose oxidase to the tea is 0.25-0.28%, and the pH value of the glucose oxidase solution is 5-5.5; and conveying the tea subjected to fixation to a spreading machine for dynamic antioxidant spreading for 1.2-1.3 hours, wherein in the dynamic spreading process, the tea is continuously turned and fully and uniformly mixed with glucose oxidase, so that the uniformity of tea processing is ensured. In addition, be provided with ultrasonic atomization device at the feed end of spreading out green machine, utilize ultrasonic atomization device to spout and add glucose oxidase solution, make the glucose oxidase solution after the atomizing get better with the contact of tealeaves, anti-oxidant effect is better. Meanwhile, the temperature of the tea leaves after enzyme deactivation can be rapidly reduced to 53-54 ℃ by the glucose oxidase solution, so that the glucose oxidase is promoted to rapidly act, and an anti-oxidation effect is generated.

(4) Electric heating roll shape: and (3) conveying the antioxidant bud leaves into a closed electric heating roller machine, setting the rolling temperature to be 55-57 ℃, and rolling for 40-45 minutes, wherein the activity of glucose oxidase cannot be damaged by low-temperature rolling, so that the tea leaves cannot be oxidized in the whole electric heating rolling process.

(5) Cold air conditioning: and (3) inputting the rolled bud leaves into a cold air moisture regaining machine, and regaining moisture for 58-60 minutes in a natural air blowing mode, wherein the temperature of natural air is most suitable to be 20-25 ℃.

(6) Electric heating and strip tidying: and (3) inputting the bud leaves subjected to cold air moisture regaining into an electric heating strip tidying machine, setting the strip tidying temperature to be 70-72 ℃, and setting the strip tidying time to be 23-24 minutes, so that the water content is reduced to 18-19%.

(7) Roller car color: and (3) inputting the strips of the buds and the leaves into a roller color turning machine made of high-carbon alloy cast iron with the carbon content of more than 2%, setting the color turning temperature to be 50-52 ℃, the rotating speed of a roller to be 40-41 r/min, and the color turning time to be 42-44 min, so that the water content is less than or equal to 4.5%.

(8) Scenting the chloranthus flower: placing the colored bud leaves into a scenting barrel, and placing 1 pack of sachets at intervals of 16-17cm, wherein the size of each sachet is matched with the diameter of the scenting barrel, so that a structure of alternately stacking a layer of tea leaves and a layer of sachets is formed in the scenting barrel. The sachet is 200-250 g of dry flowers of chloranthus spicatus wrapped by white gauze. When scenting, the temperature is set to be 22-24 ℃, the chloranthus spicatus releases a large amount of fragrance, the cover of the tea is covered after the tea absorbs the fragrance for 2.2-2.4 hours, then the temperature is set to be 32-34 ℃, and the scenting is carried out for 14-15 days.

(9) Color selection and purification: conveying the scented bud leaves to a photoelectric color sorter, and recognizing and removing impurities such as tea stalks, hair, flowers, stem bark, fibers and the like by using the picking function of an intelligent recognition system of the photoelectric color sorter.

(10) Removing foreign matters by ion wind: and (3) bouncing the color-selected bud leaves through a vibration conveying groove provided with an anion fan, and removing fine foreign matters adhered to the surfaces of the bud leaves by using positive and negative charge air flow of the anion fan to enable the cleanliness of the tea leaves to be more than 99.8%.

(11) Microwave and light wave sterilization: and (3) inputting the tea with the foreign matters removed into a microwave optical wave sterilizer, setting the sterilization temperature to be 100-102 ℃, and sterilizing for 3.5-3.8 minutes.

(12) Nitrogen filling and fresh keeping: inputting the tea leaves into an integrated intelligent packaging machine, and packaging into small cans of green tea through the procedures of filling, nitrogen filling, (each can is filled with 18-19 ml of nitrogen to ensure that the oxygen content in the can body is less than or equal to 0-1.5 percent, oxygen-free preservation, film sealing, boxing, bagging, plastic packaging, boxing and the like.

Example 3: method for preparing first-level small-pot green tea by adopting production line

(1) Picking bud leaves: the bud leaf picking standard is that fresh leaves are initially developed one bud by one leaf.

(2) Electromagnetic enzyme deactivation: and (3) inputting the picked fresh leaves into an electromagnetic de-enzyming machine, setting the de-enzyming temperature to be 278-280 ℃ and the de-enzyming time to be 6.5-7 minutes.

(3) Ultrasonic enzyme adding antioxidation: the mass ratio of the addition amount of the glucose oxidase to the tea is 0.28-0.3%, and the pH value of the enzyme solution is 5.5-6. And conveying the tea leaves subjected to fixation to a spreading machine for dynamic antioxidation spreading for 1.1-1.3 hours. And an ultrasonic atomization device is arranged at the feed end of the green spreading machine, and is used for spraying glucose oxidase solution and reducing the temperature of the leaves to 54-55 ℃.

(4) Electric heating roll shape: and conveying the antioxidant bud leaves into a closed electric heating roller machine, wherein the rolling temperature is set to be 57-59 ℃, and the rolling time is set to be 48-50 minutes.

(5) Cold air conditioning: and (4) inputting the rolled bud leaves into a cold air moisture regaining machine, and regaining moisture for 56-58 minutes in a natural air blowing mode.

(6) Electric heating and strip tidying: and (3) inputting the bud leaves subjected to cold air moisture regaining into an electric heating strip tidying machine, setting the strip tidying temperature to be 74-75 ℃, and setting the strip tidying time to be 24-25 minutes, so that the water content is reduced to 18-19%.

(7) Roller car color: and (3) inputting the strips of the buds and the leaves into a roller color turning machine made of high-carbon alloy cast iron with the carbon content of more than 2%, setting the color turning temperature to be 50-52 ℃, the rotating speed of a roller body to be 41-42 r/min, and the color turning time to be 48-50 min, so that the water content is less than or equal to 4.5%.

(8) Scenting the chloranthus flower: placing the dyed bud leaves into a scenting barrel, and placing 1 pack of sachets at intervals of 17-18 centimeters, wherein the size of each sachet is matched with the diameter of the scenting barrel, so that a structure that a layer of tea leaves and a layer of sachets are formed in the scenting barrel and are alternately stacked is formed. The sachet is 200-250 g of dry flowers of chloranthus spicatus wrapped by white gauze. When scenting, the temperature is set to be 22-24 ℃, the chloranthus flower is given off a large amount of fragrance, the cover of the bucket is covered after the tea leaves absorb the fragrance for 2.3-2.4 hours, the temperature is set to be 32-34 ℃, and the scenting is carried out for 15 days.

(9) Color selection and purification: the scented tea leaves are conveyed to a photoelectric color selector, and impurities such as tea stalks, hair, flowers, stem bark, fibers and the like are identified and removed by the picking function of an intelligent identification system of the photoelectric color selector.

(10) Removing foreign matters by ion wind: and (3) bouncing the purified bud leaves through a vibration conveying groove provided with an anion fan, and removing fine foreign matters adhered to the surfaces of the bud leaves by using positive and negative charge air flow of the anion fan to ensure that the cleanliness of the tea leaves reaches over 99.8 percent.

(11) Microwave and light wave sterilization: and (3) inputting the tea with the foreign matters removed into a microwave optical wave sterilizer, setting the sterilization temperature to be 100-102 ℃, and the sterilization time to be 3.8-4 minutes.

(12) Nitrogen filling and fresh keeping: inputting into an integrated intelligent packaging machine, and packaging into small-tank green tea by filling, nitrogen charging (wherein each tank is charged with 19-20 ml of nitrogen to ensure that the oxygen content in the tank is less than or equal to 0-1.8 percent, carrying out oxygen-free fresh-keeping), film sealing, boxing, bagging, plastic packaging, boxing and other processes.

The invention is described above with reference to the accompanying drawings. It is to be understood that the specific implementations of the invention are not limited in this respect. Various insubstantial improvements are made by adopting the method conception and the technical scheme of the invention; the present invention is not limited to the above embodiments, and can be modified in various ways.

Claims (8)

1. A processing production line for preparing small-pot green tea by utilizing biological enzyme is characterized in that: comprises a water removing machine, a water spreading machine, a rolling machine, a moisture regaining machine, a strip tidying machine, a color turning machine and a scenting room which are connected in sequence through a conveying device; a first vibration conveying groove is arranged between the enzyme deactivating machine and the enzyme spreading machine, and an ultrasonic humidifier filled with a glucose oxidase solution is arranged on the first vibration conveying groove;

the green tea leaf spreading machine is a continuous dynamic green tea leaf spreading machine, the rolling machine is a drum-type electric heating rolling machine, a discharge port of the rolling machine is provided with a movable cover plate, and a group of guide blade ribs are arranged in the rolling machine;

the car color machine is an electric heating roller car color machine and comprises a car color roller, wherein a high-carbon alloy cast iron layer with the carbon content of more than 2% is arranged on the inner wall of the car color roller.

2. The processing line for manufacturing canned green tea using bio-enzymes according to claim 1, wherein: the two rolling machines are arranged side by side, a first horizontal conveying belt is arranged at a discharge port of the green spreading machine, a first distribution conveying belt is arranged below the discharge port of the first horizontal conveying belt, the first distribution conveying belt is connected with a first driving motor for driving the first distribution conveying belt to rotate positively and negatively, the discharge ends of the two sides of the first distribution conveying belt are respectively provided with a lifting machine, and the other end of each lifting machine is matched with a feed port of the rolling machine; the damping machine is 1, the discharge ports of the two rolling machines are respectively provided with a second horizontal conveying belt, a first vertical conveying belt vertically arranged relative to the second horizontal conveying belt is arranged below the discharge port of the second horizontal conveying belt, a discharge port at one end of the first vertical conveying belt is provided with a lifting machine, and the other end of the lifting machine is matched with a feed port of the damping machine.

3. The processing line for manufacturing canned green tea using bio-enzymes according to claim 1, wherein: 4 strip tidying machines are arranged side by side, a movable batching machine is erected above the strip tidying machine, and the movable batching machine comprises a movable support and a rotary conveying belt arranged in the movable support; the 4 carding machines are in one-to-one correspondence with the 4 carding machines, and the 4 lathing machines are also arranged.

4. The processing line for manufacturing canned green tea using bio-enzymes according to claim 1, wherein: the scenting chambers are arranged side by side, the area of each scenting chamber is 25-35 pm, a group of scenting barrels with the height of 1.2 m and the diameter of 0.4 m are placed in each scenting chamber, and a temperature and humidity control device is arranged in each scenting chamber; the below of carding machine is provided with the perpendicular conveyer belt of second, and the discharge gate below of the perpendicular conveyer belt one end of second is provided with the storage hopper, and the bottom of storage hopper is provided with three discharge gate, and discharge gate department is provided with the valve, corresponds in the below of 3 discharge gates to be provided with 3 third horizontal conveyor, carries to three basement fragrance room respectively.

5. The processing line for manufacturing canned green tea using bio-enzymes according to claim 4, wherein: the scenting room is also provided with a third vertical conveying belt which is in butt joint with the discharge ports of the three scenting rooms, the discharge port of the third vertical conveying belt is provided with a color selector, a second vibrating conveying groove is arranged behind the color selector, a negative ion fan is arranged on the second vibrating conveying groove, the second vibrating conveying groove is connected with a sterilizer, and the discharge port of the sterilizer is connected with an automatic racking machine.

6. The processing line for manufacturing canned green tea using bio-enzymes according to claim 1, wherein: the guide blade ribs in the rolling machine are strip-shaped guide blade ribs, the height of each guide blade rib is 1.2cm, and the width of each guide blade rib is 2 cm.

7. The processing line for manufacturing canned green tea using bio-enzymes according to claim 1, wherein: the tea leaf carding machine is characterized in that the carding machine is an electric heating carding machine, the electric heating carding machine comprises a screen disc and a carding screen, the screen disc moves in a reciprocating mode, the carding screen is arranged in the screen disc, a group of carding grooves perpendicular to the tea leaf conveying direction are continuously arranged on the carding screen, the carding grooves are of a U-shaped structure, the width of each carding groove is 10cm, and the depth of each carding groove is 14 cm.

8. The processing line for manufacturing canned green tea using bio-enzymes according to claim 4, wherein: the inner wall of the scenting chamber is covered with white tiles, the temperature and humidity control device comprises an air conditioner, a dehumidifier, a temperature and humidity sensor and a controller, and the controller receives signals transmitted by the temperature and humidity sensor in real time and controls the opening and closing of the air conditioner and the dehumidifier according to the temperature and humidity signals.

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