CN219850604U - Machine-picked tea leaf grader and processing production line using same - Google Patents

Abstract

The utility model discloses a machine-picked tea leaf classifier and a processing production line using the same, comprising a frame, wherein a classifying roller is arranged on the frame, the classifying roller comprises an octagonal classifying screen body, the classifying screen body comprises a impurity removing screen, a classifying screen I and a classifying screen II which are sequentially arranged, one end of the classifying screen body is connected with a gradient regulator 33 through a main shaft, the other end of the classifying screen body is connected with the frame, four supporting rods are arranged on the main shaft and connected with the classifying screen body, the front end and the rear end of the classifying screen body are both opened, the classifying roller is provided with 4 horizontal connecting rods, and the two ends of the horizontal connecting rods are connected with the inner sides of screen hoops. The utility model carries out grading and branching processing on the mechanically picked fresh leaves, can ensure that the fresh leaves with different grades are fully utilized, and improves the price of the finished tea and income of tea farmers.

Description

Machine-picked tea leaf grader and processing production line using same

Technical Field

The utility model relates to the technical field of tea production, in particular to a machine-picked tea leaf classifier and a processing production line using the same.

Background

The main current tea picking machine in the market adopts a non-selective cutting principle to pick tea leaves, so that the fresh She Laonen picked by the machine is different in specification and various in specifications, and even the mixed conditions of broken leaves, tea stems and non-tea substances occur. The fresh tea leaves are not classified in part of tea areas to be directly processed, so that the phenomenon that the tea leaves are asynchronous in the processing process is caused, the quality of the tea leaves is seriously influenced, tea leaf resources are not fully utilized in the processing, the price of the tea leaves is low, and the development of mechanical picking processing of the tea leaves is influenced.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model aims to provide a machine-picked tea leaf classifier which classifies fresh leaves by using machinery, ensures that processed fresh She Laonen, the size and the length are consistent, unifies the standard specification of classified tea leaves and obviously improves the classification efficiency of the tea leaves.

The utility model further aims to provide a processing production line using the tea classifier, the appearance of finished tea processed after classification is tight, non-tea impurities such as tea stems, yellow sheets and the like are obviously reduced, aroma is obviously improved, the machine-picked fresh leaf classification and branching processing production line has the characteristics of high processing efficiency, excellent equipment performance, high classification precision and the like, the shortage of tea-picking workers in tea gardens can be effectively solved, and the development of the booster tea industry is of great significance.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a tea leaf grader is adopted to machine, includes the frame, install the classifying drum in the frame, the classifying drum is including being the classifying screen body of octagon, classifying screen body is including edulcoration screen cloth, classifying screen I, classifying screen II that lay in proper order, classifying screen body one end is connected with the inclination adjuster through the main shaft, the other end with the frame is connected, be equipped with four spinal branch vaulting poles on the main shaft and be connected with classifying screen body, classifying screen body front end and rear end all open-ended, classifying drum is equipped with 4 horizontal connecting rods, the both ends and the screen hoop inboard of horizontal connecting rod link to each other, the screen hoop is installed in classifying screen body periphery.

Optionally, be equipped with annular screen cloth mounting bracket between edulcoration screen cloth and the classifying screen cloth I, classifying screen cloth I and classifying screen cloth II, and it is fixed through horizontal connecting rod.

Optionally, a feeding plate, a impurity discharging port, a discharging port I, a discharging port II and a discharging port III are arranged on the frame, and the feeding plate is positioned at the front end of the classifying screen body, and the inclination angle is 60 degrees; the impurity discharging opening, the discharging opening I and the discharging opening II are positioned under the classifying screen body and correspond to the impurity removing screen, the classifying screen I and the classifying screen II respectively, and the discharging opening III is positioned under the rear end of the classifying screen body.

Optionally, the inclination adjuster comprises a rotary hand wheel, a spiral screw, a nut and an adjusting frame, one end of the spiral screw is connected with the rotary hand wheel, the other end of the spiral screw is connected with the adjusting frame, and the inclination adjuster is installed on the frame.

Optionally, a transmission mechanism is installed on the frame, the transmission mechanism comprises a motor, a driving belt pulley is installed on the motor, a primary large belt pulley is installed on the frame and located above the driving belt pulley, and the driving belt pulley is connected with the primary large belt pulley through a belt;

the secondary small belt wheel is arranged on the frame and is coaxial with the primary large belt wheel, is positioned right in front of the primary large belt wheel, is arranged on the frame and is positioned right of the secondary small belt wheel, and the secondary large belt wheel is connected with the secondary small belt wheel through a belt and is coaxial with the driving chain wheel;

the driving sprocket is positioned right behind the secondary large belt wheel and is arranged on the frame, and the driven sprocket is positioned right above the driving sprocket and is connected with the driving sprocket through a chain; the driven chain wheel is coaxial with the classifying roller supporting wheel, and the classifying roller supporting wheel is connected with the screen hoop.

Further, the frame is provided with a protective cover, a driven sprocket, a secondary large belt wheel, a grading roller supporting wheel, a primary large belt wheel, a secondary small belt wheel, a motor, a driving belt wheel and a driving sprocket which are all positioned in the protective cover.

The processing production line adopting the tea classifier comprises a fresh leaf classifier, a tea roller de-enzyming machine, a rolling machine set, a tea deblocking screening machine, a tea chain plate type dryer, a tea moisture regaining machine, a tea bottle type stir-drying machine, a plane round screening machine, a tea color selector, a tea aroma raising machine and a tea packing machine, wherein the fresh leaf classifier and the tea roller de-enzyming machine are connected through a tea hoister, and the tea roller de-enzyming machine set and the rolling machine set are connected through a tea cooler;

the twisting unit and the tea deblocking and screening machine are connected through a tea lifter, and the tea deblocking and screening machine and the tea chain plate type dryer are connected through a horizontal conveyor and a tea lifter which are sequentially arranged;

the tea leaf chain plate type dryer, the tea leaf moisture regaining machine and the tea leaf bottle type roasting machine are connected through a tea leaf lifting machine, and the tea leaf bottle type roasting machine and the plane circular screen machine are connected through a horizontal conveyor and a tea leaf lifting machine which are sequentially arranged;

the plane round screen machine, the tea color selector, the tea aroma extracting machine and the tea packaging machine are mutually connected through a tea lifting machine;

the adjacent devices are arranged in an S-shaped and coherent manner, and the horizontal conveyor is arranged at the turning part of the production line.

Optionally, the rolling machine set is formed by combining 6 tea rolling machines, and the 6 tea rolling machines are arranged in two rows and three columns.

Compared with the prior art, the utility model has the beneficial effects that:

1. the fresh leaves are classified by using machinery, so that processed fresh She Laonen, consistent size and length are ensured, standard specification of classified tea is unified, and the classification efficiency of the tea is remarkably improved;

2. the fresh leaves are classified by using machinery and then are processed by branches, so that tea resources are fully utilized, the selling price and the product quality of finished tea are obviously improved, and the development of mechanical processed tea is promoted;

3. the grading roller, the frame and the transmission mechanism are matched with each other, so that grading impurity removal is conveniently carried out on tea leaves, the grading effect of the mechanically picked fresh leaves is improved, and the quality of the tea leaves after branching processing is improved;

in conclusion, the machine-picked fresh She Yundu is consistent after final classification, the appearance of finished tea processed after classification is tight, non-tea impurities such as tea stems, yellow slices and the like are obviously reduced, aroma is obviously improved, the machine-picked fresh leaf classification and branching processing production line has the characteristics of high processing efficiency, excellent equipment performance, high classification precision and the like, the shortage of tea-picking workers in tea gardens can be effectively solved, and the development of the booster tea industry is of great significance.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a front view of a fresh leaf classifier of the present utility model;

FIG. 2 is a top view of the fresh leaf classifier of the present utility model;

FIG. 3 is a side view of the fresh leaf classifier of the present utility model;

FIG. 4 is a schematic view of the structure of a screen of the fresh leaf classifier of the present utility model;

FIG. 5 is a schematic view of the slope regulator of the fresh leaf classifier of the present utility model;

FIG. 6 is a schematic diagram of a machine-extracted fresh leaf grading and branching processing production line of the utility model;

reference numerals:

1-fresh leaf grader, 2-tea hoister, 3-tea roller de-enzyming machine, 4-tea cooler, 5-tea twisting machine, 6-tea deblocking screening machine, 7-horizontal conveyor, 8-tea chain plate dryer, 9-tea moisture regaining machine, 10-tea bottle type roasting machine, 11-plane circular screening machine, 12-tea color selector, 13-tea aroma raising machine and 14-tea packaging machine;

15-frame, 16-feeding plate, 17-impurity removing screen, 18-impurity discharging port, 19-classifying screen I, 20-discharging port I, 21-classifying screen II, 22-discharging port II, 23-caster, 24-discharging port III, 25-regular octagonal screen body, 26-driven sprocket, 27-secondary large pulley, 28-shield mounting bracket, 29-classifying roller supporting wheel, 30-primary large pulley, 31-secondary small pulley, 32-motor, 33-inclination adjuster, 34-driving sprocket, 35-driving pulley, 36-screen hoop, 37-supporting rod, 38-main shaft, 39-rotating hand wheel, 40-spiral screw rod, 41-nut, 42-adjusting frame, 43-horizontal connecting rod, 44-annular screen mounting bracket, 45-shield.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Example 1: as shown in fig. 1-5, a machine-picked tea leaf grader comprises a grading roller, a transmission mechanism, a gradient regulator and a frame 15, wherein the grading roller comprises a regular octagonal grading screen body 25, the grading screen body 25 comprises a impurity removing screen 17, a grading screen I19 and a grading screen II 21 which are sequentially arranged, one end of the grading screen body 25 is connected with the gradient regulator 33 through a main shaft 38, the other end of the grading screen body is connected with the frame 15, four supporting rods 37 are arranged on the main shaft 38 and are connected with the regular octagonal grading screen body 25, the front end and the rear end of the grading screen body 25 are both opened, 4 horizontal connecting rods 43 are installed on the whole grading roller, and two ends of each horizontal connecting rod 43 are connected with the inner side of a screen hoop 36.

As shown in fig. 2, the impurity removing screen 17 mainly removes impurities such as crushed stone leaves in the picked fresh leaves. The impurity removing screen 17 is formed by connecting 8 sections of screens in series, the type of the screens is a woven screen, the materials are stainless steel wires, the screen holes are square, and the side length is 0.1-0.3cm. The classifying screen I19 and the classifying screen II 21 are mainly used for separating fresh leaves with different sizes, 8 sections of screens are arranged in series, the type of the screens is a woven screen, the material is stainless steel wires, the side length of the screen hole of the classifying screen I19 is 0.3-2cm, and the side length of the screen hole of the classifying screen II 21 is 2-3cm. The screen body 25 is classified and the screen size is replaceable. The impurity removing screen 17, the classifying screen I19 and the classifying screen II 21 are replaced and installed by the annular screen mounting frame 44. The annular screen mounting frame 44 is located between the impurity removing screen 17 and the classifying screen i 19, between the classifying screen i 19 and the classifying screen ii 21, and is fixed by the horizontal connecting rod 43.

As shown in fig. 3 and 4, the transmission mechanism includes a sprocket 26, a secondary large pulley 27, a classifying drum supporting wheel 29, a primary large pulley 30, a secondary small pulley 31, a shield mounting bracket 28, a motor 32, a driving pulley 34, and a driving sprocket 35. Three-stage speed reduction transmission is adopted, the first-stage speed reduction and the second-stage speed reduction adopt belt speed reduction, the third-stage speed reduction adopts chain wheel speed reduction, a motor 32 is fixed on a frame 15, a driving pulley 34 is arranged on the motor 32, a primary large pulley 30 is arranged on the frame 15 and positioned above the driving pulley 34, and the driving pulley 34 is connected with the primary large pulley 30 through a belt; the secondary small belt wheel 31 is arranged on the frame 15 and is coaxial with the primary large belt wheel 30, is positioned right in front of the primary large belt wheel 30, the secondary large belt wheel 27 is arranged on the frame 15 and is positioned right of the secondary small belt wheel 31, and the secondary large belt wheel 27 is connected with the secondary small belt wheel 31 through a belt and is coaxial with the driving chain wheel 35; the driving sprocket 35 is positioned right behind the secondary large belt wheel 27 and is arranged on the frame 15, and the driven sprocket 26 is positioned right above the driving sprocket 35 and is connected with the driving sprocket 35 through a chain; the driven sprocket 26 is coaxial with the classifying roller supporting wheel 29, the classifying roller supporting wheel 29 is connected with the screen hoop 36, the power of the motor 32 is transmitted to the classifying roller supporting wheel 29 through three-stage speed reduction transmission, and the screen body is driven to rotate through friction between the classifying roller supporting wheel 29 and the screen hoop 36 of the regular octagonal classifying screen body 25. The screen band 36 is circular and is mounted on the outer periphery of the classifying screen 25. The shield 45 is mounted on the shield mounting bracket 28; the driven sprocket 26, the secondary large belt pulley 27, the classifying roller supporting wheel 29, the primary large belt pulley 30, the secondary small belt pulley 31, the motor 32, the driving belt pulley 34 and the driving sprocket 35 are all positioned in the protective cover 45, and the protective cover mounting bracket 28 is mounted on the frame 15.

As shown in fig. 2, the feeding plate 16, the impurity discharging opening 18, the discharging opening i 20, the discharging opening ii 22 and the discharging opening iii 24 are all installed on the frame 15, the feeding plate 16 is located at the front end of the classifying screen 25, the inclination angle of the feeding plate 16 is 60 ° right above the driving sprocket 35, the impurity discharging opening 18, the discharging opening i 20 and the discharging opening ii 22 are located right below the classifying screen 25, and correspond to the impurity removing screen 17, the classifying screen i 19 and the classifying screen ii 21 respectively, and the discharging opening iii 24 is located right below the rear end of the classifying screen 25.

As shown in fig. 5, the inclination adjuster 33 is composed of a rotary hand wheel 39, a screw 40, a nut 41, and an adjusting frame 42, one end of the screw 40 is connected to the rotary hand wheel 39, the other end is connected to the adjusting frame 42, and the inclination adjuster 33 is fixed to the frame 15 by the nut. The rotary hand wheel 39 is adjusted, the spiral screw 40 moves up and down, and the height of the lower end position of the main shaft 38 is adjusted, so that the inclination is changed, the residence time of tea leaves on the screen is conveniently adjusted according to the specifications of fresh picked leaves, the screening efficiency is improved, and the adjustment angle of the classifying screen 25 is 0-10 degrees.

As shown in fig. 2, four casters 23 are installed at the bottom of the frame 15 to facilitate movement of the apparatus.

Working principle: tea is sent into the feed plate of tea classifier 1 by tea hoister 2, classifying screen 25 rotates under the effect of drive mechanism, classifying screen 25 rotates the in-process, tea preferentially gets into edulcoration screen 17, stone garrulous leaf in the fresh leaf of machine-picked impurity then gets into and unloads miscellaneous mouth 18, tea then continues to move forward along with classifying screen 25, less one bud two leaves then are sieving out through classifying screen I19 and get into discharge opening I20, the one bud three leaves in the middle of the volume are sieving out through classifying screen II 21 and get into discharge opening II 22, the big one bud four leaves then are sieving out from discharge opening III 24.

Example 2: a processing production line of the tea classifier in application example 1 is shown in figures 1-6, and comprises a tea classifier 1, a tea roller enzyme deactivating machine 3, a twisting unit, a tea deblocking screening machine 6, a tea chain plate dryer 8, a tea moisture regaining machine 9, a tea bottle type stir-drying machine 10, a plane circular screen 11, a tea color selector 12, a tea aroma raising machine 13 and a tea packaging machine 14,

the fresh leaf classifier 1 and the tea roller enzyme deactivating machine 3 are connected through a tea lifter 2, and the tea roller enzyme deactivating machine 3 and the rolling machine set are connected through a tea cooler 4;

the twisting unit and the tea deblocking and screening machine 6 are connected through a tea lifter 2, and the tea deblocking and screening machine 6 and the tea chain plate type dryer 8 are connected through a horizontal conveyor 7 and the tea lifter 2 which are sequentially arranged;

the tea leaf chain plate type dryer 8, the tea leaf moisture regaining machine 9 and the tea leaf bottle type frying machine 10 are connected through the tea leaf lifting machine 2, and the tea leaf bottle type frying machine 10 and the plane round screen 11 are connected through the horizontal conveyor 7 and the tea leaf lifting machine 2 which are sequentially arranged;

the plane round screen machine 11, the tea color selector 12, the tea aroma raising machine 13 and the tea packing machine 14 are mutually connected through the tea lifting machine 2;

the adjacent devices are arranged in an S-shaped and consecutive manner, and the horizontal conveyor 7 is arranged at the turning part of the production line.

In the embodiment, the twisting unit is formed by combining 6 tea twisting machines 5, the 6 tea twisting machines 5 are arranged in two rows and three rows, the cooled water-removed leaves are sent to a weighing platform through a tea hoister 2, are sent to the upper part of the tea twisting machines 5 after reaching the target weight, the covers of the tea twisting machines 5 are opened, tea enters the tea twisting machines 5 to start twisting, after twisting is finished, tea leaves are sent out of tea leaves by the tea twisting machines 6, tea leaves are opened, and the tea leaves are conveyed to a tea deblocking screening machine 6 through the tea hoister 2.

In this embodiment, the feeding end of the fresh leaf classifier 1 is provided with a tea lifter 2 for conveying picked tea leaves to the feeding end of the fresh leaf classifier 1 by the tea lifter 2.

In this embodiment, the specific mechanical model parameters of each device applied in the production line are as follows:

the tea fixation machine is 6CST80, manufactured by Qu Zhou Feng Shi Co Ltd, the diameter of a roller of the fixation machine is 800mm, the length of the roller is 4000mm, 6 spiral guide blades in the roller are 6 in length and 6cm in height, the spiral guide blade angle between the feeding end and the discharging end is 45 degrees, and the spiral guide blade angle of the fixation section is 15 degrees;

the model of the tea cooler is 6CML-75, which is produced by Quzhou city green peak industry and trade company;

the model of the deblocking screening machine is 6 CYS-30, which is produced by Quzhou green peak industry and trade company; the upper section of the screen is a 4-mesh screen, the lower section of the screen is a 2-mesh screen, the rotating speed of the deblocking wheel is 500-550r/min,

the model of the tea rolling machine is 6CR-55, and the tea rolling machine is manufactured by Quzhou city green peak industry and trade company; the outer diameter of a kneading barrel of the tea kneading machine is 55cm, the rotating speed of the kneading machine is 40-50r/min, 12 prismatic bones are uniformly distributed on a kneading disc, and the concavity of the kneading disc is 6 degrees;

the model of the tea chain plate type dryer is 6CH15, and the tea chain plate type dryer is manufactured by Quzhou city green peak industry and trade company;

the model of the tea bottle type frying machine is 6CCL100, and the tea bottle type frying machine is produced by Quzhou city green peak industry and trade company; 16 ribs are arranged on the cylinder wall, 4 spiral guide plates are arranged on the inner wall of the cylinder, and the rotation speed is 25-30r/min;

the model of the tea round screening machine is 6CSY100, and the tea round screening machine is manufactured by Quzhou city green peak industry and trade company; the screen meshes are sequentially arranged according to 4, 5, 6, 7 and 8 holes, the rotation speed of the round screen machine is 180-200 r/min, and the inclination angle of the screen meshes is 5 degrees;

the model of the tea color selector is 6CSX-900TD3, and the Hefei Mei ya photoelectric technology Co., ltd;

the model of the tea aroma extracting machine is 6CHB10, the tea aroma extracting machine 13 is manufactured by Qu city, green peak industry and trade company, the temperature is 80-90 ℃, the aroma extracting time is 20-40min, and the water content is controlled to be 5-6%.

Example 3: a processing production line of the tea leaf grader in application example 1 comprises the following specific use methods:

step one: the picked tea leaves are firstly sent into a tea classifier 1 for classification by a tea lifter 2, and tea fresh leaves with the width of 20 multiplied by 20mm and the width of less than 20mm and mainly comprising one bud and two leaves, tea fresh leaves with the width of between 20 multiplied by 20mm and 30 multiplied by 30mm and mainly comprising one bud and three leaves, and tea fresh leaves with the width of more than 30 multiplied by 30mm and mainly comprising four leaves are respectively obtained;

the screen mesh sizes of the classifying sections of the fresh leaf classifier 1 are respectively 20 multiplied by 20mm and 30 multiplied by 30mm, and the rotating speed of the roller of the fresh leaf classifier 1 is 15-20r/min;

step two: the classified tea fresh leaves mainly comprising one bud and four leaves are firstly processed, the tea fresh leaves mainly comprising two buds and three leaves and the tea fresh leaves mainly comprising one bud and three leaves enter a storage device firstly, and the tea fresh leaves are sequentially processed after the processing of the four leaves of one bud is finished. Delivering the classified tea leaves into a roller-type tea fixation machine 3 through a tea lifting machine 2, wherein the temperature of the roller-type tea fixation machine 3 is 280-320 ℃, the fixation time is 2-3min, and the water content of tea blanks after fixation is controlled to be 60% -65%;

step three: cooling the de-enzymed tea leaves in a tea cooler 4 for 10-30min to a thickness of 4-6cm, and cooling to 20-25deg.C;

5 axial fans are uniformly distributed above the inclined conveyor belt of the tea cooler 4, and are used for carrying out air blast cooling on the enzyme-deactivated leaves, so that the enzyme-deactivated leaves are rapidly cooled;

step four: directly feeding cooled tea leaves into a rolling machine set, and performing air rolling for 1-2min, light pressing for 5-8min, heavy pressing for 7-10min, light pressing for 4-6min and loose pressing for 3-4min; the rolled tea leaves are sent into a tea deblocking screening machine 6 for deblocking screening through a tea lifting machine 2;

step five: the tea leaves after deblocking and sieving are sent into a chain plate dryer 8 for primary drying by a horizontal conveyor 7, the primary drying time is 5-10min, the hot air temperature is 100-120 ℃, and the water content of the tea leaves is 35-40%;

step six: sending the primarily baked tea leaves into a tea leaf conditioning machine 9 for conditioning for 30-50min by a tea leaf lifting machine 2, and spreading the tea leaves for 5-10cm in thickness;

step seven: sending the remoistened tea leaves into a tea bottle type frying machine 10 through a tea lifting machine 2 for frying, wherein the temperature of the frying machine is 100-120 ℃, the frying time is 40-60min, and the water content is controlled within 10%;

step eight: after being fried, the tea leaves are sequentially sent into a tea round screening machine 11 and a tea color selecting machine 12 through a tea lifting machine 2 for finish machining, after finishing machining, the tea leaves are sent into a tea aroma raising machine 13 through the tea lifting machine 2 for aroma raising, after aroma raising, the tea leaves are directly spread on the tea lifting machine 2 for cooling, then sent into a tea packing machine 14 for packing and sealing, after the temperature is restored to the room temperature, the tea leaves are sent into a fresh-keeping warehouse for preservation, and the temperature of the fresh-keeping warehouse is 0-4 ℃.

The machine-picked fresh She Yundu is consistent after grading, the appearance of finished tea processed after grading is tight, non-tea impurities such as tea stems, yellow flakes and the like are obviously reduced, aroma is obviously improved, and the machine-picked fresh leaf grading and branching processing production line has the characteristics of high processing efficiency, excellent equipment performance, high grading precision and the like, can effectively solve the shortage of tea-picking workers in tea gardens and has important significance in the development of the booster tea industry.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (8)

1. The utility model provides a tea leaf grader is adopted to machine, includes frame (15), its characterized in that, install the classifying drum on frame (15), the classifying drum is including classifying screen body (25) that are the octagon, classifying screen body (25) are including edulcoration screen cloth (17), classifying screen I (19), classifying screen II (21) that lay in proper order, classifying screen body (25) one end is connected with inclination adjuster (33) through main shaft (38), the other end with frame (15) are connected, be equipped with four spinal branch vaulting poles (37) on main shaft (38) and classifying screen body (25) are connected, classifying screen body (25) front end all opens with the rear end, classifying drum is equipped with 4 horizontal connecting rods (43), the both ends and the screen collar (36) inboard link to each other of horizontal connecting rod (43), screen collar (36) are installed in classifying screen body (25) periphery.

2. The machine-extracted tea leaf classifier according to claim 1, wherein an annular screen mounting frame (44) is provided between the impurity removing screen (17) and the classifying screen i (19), and between the classifying screen i (19) and the classifying screen ii (21), and is fixed by a horizontal connecting rod (43).

3. The machine-extracted tea leaf classifier according to claim 1, wherein the frame (15) is provided with a feeding plate (16), a impurity discharging port (18), a discharging port I (20), a discharging port II (22) and a discharging port III (24), and the feeding plate (16) is positioned at the front end of the classifying screen body (25) and has an inclination angle of 60 degrees; the impurity discharging port (18), the discharging port I (20) and the discharging port II (22) are located right below the classifying screen body (25) and correspond to the impurity removing screen (17), the classifying screen I (19) and the classifying screen II (21) respectively, and the discharging port III (24) is located right below the rear end of the classifying screen body (25).

4. The machine-extracted tea leaf grader according to claim 1, wherein the inclination adjuster (33) comprises a rotary hand wheel (39), a spiral screw (40) and an adjusting frame (42), one end of the spiral screw (40) is connected with the rotary hand wheel (39), the other end is connected with the adjusting frame (42), and the inclination adjuster (33) is mounted on the frame (15).

5. The machine-extracted tea leaf grader according to claim 1, wherein a transmission mechanism is mounted on the frame (15), the transmission mechanism comprises a motor (32), a driving pulley (34) is mounted on the motor (32), a primary large pulley (30) is mounted on the frame (15) and located above the driving pulley (34), and the driving pulley (34) is connected with the primary large pulley (30) through a belt;

the secondary small belt wheel (31) is arranged on the frame (15) and is coaxial with the primary large belt wheel (30), is positioned right in front of the primary large belt wheel (30), the secondary large belt wheel (27) is arranged on the frame (15) and is positioned right of the secondary small belt wheel (31), and the secondary large belt wheel (27) is connected with the secondary small belt wheel (31) through a belt and is coaxial with the driving chain wheel (35);

the driving chain wheel (35) is positioned right behind the secondary large belt wheel (27) and is arranged on the frame (15), and the driven chain wheel (26) is positioned right above the driving chain wheel (35) and is connected through a chain; the driven sprocket (26) is coaxial with the classifying roller supporting wheel (29), and the classifying roller supporting wheel (29) is connected with the screen hoop (36).

6. The machine-extracted tea leaf grader according to claim 5, wherein a protective cover (45) is mounted on the frame (15), and the driven sprocket (26), the secondary large belt wheel (27), the grading drum supporting wheel (29), the primary large belt wheel (30), the secondary small belt wheel (31), the motor (32), the driving belt wheel (34) and the driving sprocket (35) are all located inside the protective cover (45).

7. A processing production line adopting the tea classifier of any one of claims 1-6, comprising a fresh leaf classifier (1), a tea roller enzyme deactivating machine (3), a twisting machine set, a tea deblocking screening machine (6), a tea chain plate type dryer (8), a tea moisture regaining machine (9), a tea bottle type stir-drying machine (10), a plane circular screen machine (11), a tea color selector (12), a tea aroma raising machine (13) and a tea packaging machine (14),

the fresh leaf classifier (1) and the tea roller enzyme deactivating machine (3) are connected through a tea lifter (2), and the tea roller enzyme deactivating machine (3) and the twisting machine set are connected through a tea cooler (4);

the twisting unit and the tea deblocking and screening machine (6) are connected through a tea lifter (2), and the tea deblocking and screening machine (6) and the tea chain plate type dryer (8) are connected through a horizontal conveyor (7) and the tea lifter (2) which are sequentially arranged;

the tea leaf chain plate type dryer (8), the tea leaf moisture regaining machine (9) and the tea leaf bottle type frying machine (10) are connected with each other through a tea leaf lifting machine (2), and the tea leaf bottle type frying machine (10) and the plane round screen machine (11) are connected with the tea leaf lifting machine (2) through a horizontal conveyor (7) which is sequentially arranged;

the plane round screen machine (11), the tea color selector (12), the tea aroma raising machine (13) and the tea packaging machine (14) are mutually connected through the tea lifting machine (2);

the adjacent devices are arranged in an S-shaped and coherent manner, and the horizontal conveyor (7) is arranged at the turning part of the production line.

8. The processing line according to claim 7, characterized in that the rolling machine set is composed of 6 tea rolling machines (5) in a combined mode, and the 6 tea rolling machines (5) are arranged in two rows and three columns.