Device and method for white tea production

Abstract

The invention discloses a device and method for white tea production, the device comprises a withering area, a tea cultivating area, a screening area and a packaging area, a camera module is arranged on a conveying belt of the withering area, a tea cultivating machine and a drying machine are arranged in the tea cultivating area, a feeding port of the tea cultivating machine is communicated with a discharging port of the conveying belt, and a discharging port of the drying machine is communicated with a discharging port of the conveying belt. A discharging port of the tea cultivating machine is communicated with a feeding port of the drying machine, a detection module is arranged at a discharging port of the drying machine, a feeding port of the screening area is communicated with the discharging port of the drying machine, and a visual monitoring module is arranged in the screening area. The withering area, the tea cultivating area, the screening area and the packaging area are sequentially communicated through the conveying belt, the automatic process from fresh leaves to finished product packaging is achieved, and automatic detection control among the withering area, the tea cultivating area, the screening area and the packaging area is achieved through the visual detection module, the camera module and the detection module; manual participation is reduced, so that the production efficiency of the tea leaves is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of tea processing, and particularly relates to a device and method for white tea production. Background Art

[0002] At present, tea processing mainly relies on the traditional method of "seeing, feeling and smelling" for "processing tea according to the tea appearance", which requires high experience. However, there is a shortage of labor in the tea production field at present, and there are also a lack of experienced workers, which will become a bottleneck for the high-quality and high-speed development of the tea industry. Therefore, it is particularly important to use efficient, clean and intelligent processing equipment to replace workers and realize an automated, digital and intelligent tea processing production line. Summary of the Invention

[0003] The present invention provides a device and method for white tea production, which can effectively solve the above problems.

[0004] The present invention is implemented as follows:

[0005] A device for white tea production, comprising:

[0006] A withering area, in which a conveyor belt is arranged. Fresh leaves are conveyed from the feeding port of the conveyor belt to the discharging port of the conveyor belt. Constant temperature blowers are arranged on the left and right sides of the conveyor belt, and a photographing module is arranged on the conveyor belt;

[0007] A tea nurturing area, in which a tea nurturer and a dryer are arranged. The feeding port of the tea nurturer is communicated with the discharging port of the conveyor belt, the discharging port of the tea nurturer is communicated with the feeding port of the dryer, and a detection module is arranged at the discharging port of the dryer for randomly sampling the dried tea multiple times;

[0008] A screening area, the feeding port of which is communicated with the discharging port of the dryer. The screening area includes a pneumatic feeding machine, a dust removal unit and a metal detection unit. The feeding port of the pneumatic feeding machine is communicated with the discharging port of the dryer, the discharging port of the pneumatic feeding machine is communicated with the feeding port of the dust removal unit, the metal detection unit is installed at the rear end of the discharging port of the dust removal unit, and a visual monitoring module is arranged on the pneumatic feeding machine;

[0009] A packaging area for packaging different grades of white tea screened out from the screening area.

[0010] As a further improvement, the pneumatic feeder includes a feeding end, a lifting component, and a discharging end. The bottom of the feeding end is communicated with the starting point of the lifting component, and the terminal point of the lifting component is communicated with the top of the discharging end. The lifting component includes a horizontal part, and one side of the horizontal part away from the feeding end extends obliquely upward to form a lifting part. Rotating gear sets are arranged at the bottom of the horizontal part and the top of the lifting part. The rotating gear set includes a driving gear rod arranged inside the lifting component, a tooth chain meshing with the driving gear rod, and a supporting plate fixed to the tooth chain. The supporting plate supports the bottom of the horizontal part and the bottom of the lifting part respectively.

[0011] As a further improvement, the pneumatic feeder further includes a housing. One end of the housing is provided with a blower, and the air outlet of the blower is communicated with the housing. A feeding port is further provided at one end of the housing close to the air outlet of the blower, and a dust discharge port is provided at the end of the housing away from the blower. A first collection tank, a tea collection tank, a second collection tank, a third collection tank, and a fourth collection tank are sequentially arranged at the bottom of the housing from the side close to the blower to the side close to the dust discharge port. A first baffle is arranged between the first collection tank and the tea collection tank, a second baffle is arranged between the tea collection tank and the second collection tank, a third baffle is arranged between the second collection tank and the third collection tank, and a fourth baffle is arranged between the third collection tank and the fourth collection tank.

[0012] As a further improvement, a plurality of arc-shaped sliding grooves are arranged on the outer surface of the housing. The first baffle, the second baffle, the third baffle, and the fourth baffle can all slide along the arc-shaped sliding grooves.

[0013] As a further improvement, a transportation component is arranged at the bottom of the tea collection tank. The transportation component is used to transport the tea falling out of the tea collection tank to the feeding port of the dust removal unit.

[0014] As a further improvement, the dust removal unit includes a roller transportation group. A dust removal box is placed on the upper part of the roller transportation group. A leakage net is arranged at the bottom of the dust removal box, a blowing component is arranged at the top of the dust removal box, and a collection tank is arranged at the bottom of the roller transportation group.

[0015] As a further improvement, the metal detection unit includes a frame. The frame is located on both sides of the conveyor belt, and a metal detector is arranged at the top of the frame.

[0016] A method for white tea production. The visual detection module is arranged on the lifting component. The visual detection module is used to take pictures of tea leaves and then send the taken pictures to the second processor. After receiving the pictures, the second processor statistically analyzes the particle size of the tea leaves in the pictures. If the proportion of the tea leaves with small particles < 15%, the second processor sends a control command to adjust the first baffle to slide towards the end of the arc-shaped sliding groove closest to the blower, and adjusts the second baffle, the third baffle, and the fourth baffle to slide towards the end of the arc-shaped sliding groove farthest from the blower; if the proportion of the tea leaves with small particles ≥ 15% and < 48%, the second processor sends a control command to adjust the first baffle, the second baffle, the third baffle, and the fourth baffle to slide towards the middle of the arc-shaped sliding groove; if the proportion of the tea leaves with small particles ≥ 48%, the second processor sends a control command to adjust the first baffle, the second baffle, and the fourth baffle to slide towards the end of the arc-shaped sliding groove farthest from the blower, and adjusts the third baffle to slide towards the end of the arc-shaped sliding groove closest to the blower.

[0017] As a further improvement, the photographing module is used to take real-time pictures of the fresh leaves in the withering area and then send the taken pictures to the first processor. After receiving the pictures, the first processor compares them with the standard sample data to obtain the difference between the pictures received at the current moment and the standard sample data, and then adjusts the wind force or temperature of the constant-temperature blower in the withering area according to the degree of difference, so as to accelerate or slow down the withering time and ensure that the withering degree of the fresh tea can meet the subsequent processes.

[0018] As a further improvement, the detection module includes a moisture detection module and a calculation module. The moisture detection module is used to analyze the drying degree of the tea leaves themselves and compare the detected drying degree with the standard drying degree. The calculation module is used to calculate the total number of groups of tea leaf detections and the total number of groups of qualified tea leaves, and analyze and compare the total number of groups of tea leaf detections and the total number of groups of qualified tea leaves. If the ratio of the total number of groups of qualified tea leaves to the total number of groups of tea leaf detections ≤ 85%, continue to dry the tea leaves in the dryer until the ratio of the total number of groups of qualified tea leaves to the total number of groups of tea leaf detections > 85%, and then send the dried tea leaves to the screening area.

[0019] The beneficial effects of the present invention are as follows: By connecting the withering area, tea nurturing area, screening area, and packaging area in sequence through a conveyor belt, an automated process for white tea from fresh leaves to finished packaging is achieved, thereby reducing manual operations, improving the process efficiency of white tea production, and ensuring relatively small fluctuations in the quality of the finished white tea. Secondly, by setting up an air separation feeder, screening of impurities and quality in white tea is realized, and then white tea of different qualities is classified and processed. Secondly, the white tea is dusted again through a dust removal unit to ensure the quality and hygiene of the white tea. Finally, the white tea after secondary dust removal is detected by a metal detector to ensure that no metal impurities adhere to the white tea in the previous production steps. Automated detection and control are also achieved between the withering area, tea nurturing area, screening area, and packaging area through a visual detection module, a photography module, and a detection module, reducing the participation of manual labor and thus improving the production efficiency of tea. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0021] Figure 1 FIG. is a schematic diagram of the overall structure of an apparatus and method for white tea production according to the present invention:

[0022] Figure 2 FIG. is a schematic diagram of the overall structure of the screening area in the present invention;

[0023] Figure 3 FIG. is a schematic diagram of the overall structure of the lifting component of the air separation feeder in the present invention;

[0024] Figure 4 FIG. is a schematic diagram of the overall structure of the housing of the air separation feeder in the present invention.

[0025] REFERENCE NUMERALS:

[0026] 1 - lifting component, 101 - feeding end, 102 - horizontal part, 103 - lifting part, 104 - discharging end, 105 - driving gear rod, 106 - tooth chain, 107 - supporting plate, 2 - housing, 201 - blower, 202 - feeding port, 203 - dust discharge port, 204 - transportation component, 205 - tea collection tank, 206 - arc-shaped sliding groove, 207 - first baffle, 3 - dust removal unit, 4 - metal detection unit, 5 - packaging area. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0028] In the description of the present invention, terms such as "upper", "lower", "above", "both ends", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

[0029] Refer to Figures 1-4 As shown, this embodiment provides a device for white tea production, including:

[0030] Withering area, a conveyor belt is arranged in the withering area, fresh leaves are transported from the feeding port of the conveyor belt to the discharging port of the conveyor belt, constant temperature blowers 201 are arranged on both the left and right sides of the conveyor belt, and a camera module is arranged on the conveyor belt;

[0031] Tea nurturing area, a tea nurturer and a dryer are arranged in the tea nurturing area. The feeding port of the tea nurturer is communicated with the discharging port of the conveyor belt, the discharging port of the tea nurturer is communicated with the feeding port of the dryer, and a detection module is arranged at the discharging port of the dryer. The detection module is used for randomly sampling the dried tea multiple times;

[0032] Screening area, the feeding port of the screening area is communicated with the discharging port of the dryer. The screening area includes an air separation feeder, a dust removal unit 3, and a metal detection unit 4. The feeding port of the air separation feeder is communicated with the discharging port of the dryer, the discharging port of the air separation feeder is communicated with the feeding port of the dust removal unit 3, the metal detection unit 4 is installed at the rear end of the discharging port of the dust removal unit 3, and a visual monitoring module is arranged on the air separation feeder;

[0033] Packaging area 5, which is used for packaging white teas of different grades screened out from the screening area.

[0034] The withering area, tea nurturing area, screening area, and packaging area 5 are connected in sequence through a conveyor belt, realizing the automated process of white tea from fresh leaves to finished packaging. This reduces manual operations, improves the process efficiency of white tea production, and can also ensure that the quality fluctuations of the finished white tea are relatively small.

[0035] Furthermore, the air separation feeder includes a feeding end 101, a lifting component 1, and a discharging end 104. The bottom of the feeding end 101 is connected to the starting point of the lifting component 1, and the terminal point of the lifting component 1 is connected to the top of the discharging end 104. The lifting component 1 includes a horizontal part 102, and the side of the horizontal part 102 away from the feeding end 101 extends obliquely upward to form a lifting part 103. Rotating gear sets are provided at the bottom of the horizontal part 102 and the top of the lifting part 103. The rotating gear set includes a driving gear rod 105 arranged inside the lifting component 1, a tooth chain 106 meshing with the driving gear rod 105, and a supporting plate 107 fixed to the tooth chain 106. The supporting plate 107 supports the bottom of the horizontal part 102 and the bottom of the lifting part 103 respectively.

[0036] Furthermore, several groups of observation windows that can be flipped and opened are provided on the outer shell of the lifting component 1.

[0037] By setting the observation windows, the white tea inside the lifting component 1 can be monitored in real time, and it is also convenient to maintain the lifting component 1.

[0038] Furthermore, the air separation feeder further includes a housing 2. One end of the housing 2 is provided with a blower 201, and the air outlet of the blower 201 is connected to the housing 2. A feeding port 202 is also provided at one end of the housing 2 close to the air outlet of the blower 201. A dust discharge port 203 is provided at the end of the housing 2 away from the blower 201. A first collection tank, a tea leaf collection tank 205, a second collection tank, a third collection tank, and a fourth collection tank are sequentially arranged at the bottom of the housing 2 from the side close to the blower 201 to the side close to the dust discharge port 203. A first baffle 207 is provided between the first collection tank and the tea leaf collection tank 205, a second baffle is provided between the tea leaf collection tank 205 and the second collection tank, a third baffle is provided between the second collection tank and the third collection tank, and a fourth baffle is provided between the third collection tank and the fourth collection tank.

[0039] By setting the first collecting trough, the tea collecting trough 205, the second collecting trough, the third collecting trough and the fourth collecting trough, it is possible to classify white tea of ​​different qualities and clean up impurities mixed in the white tea. That is, because white tea of ​​different qualities has different volumes, its own weight is also different, resulting in different distances when it is blown by the blower 201, thereby achieving classification of white tea of ​​different qualities.

[0040] Furthermore, a plurality of arc-shaped sliding grooves 206 are provided on the outer surface of the housing 2 , and the first baffle 207 , the second baffle, the third baffle and the fourth baffle can all slide along the arc-shaped sliding grooves 206 .

[0041] By providing the arc-shaped sliding groove 206, the angles of different baffles can be adjusted, so that the quality of white tea can be classified in a targeted manner. It can also be applied to other different types of tea, making the device more applicable.

[0042] Furthermore, a transport component 204 is provided at the bottom of the tea collecting trough 205 , and the transport component 204 is used to transport the tea leaves falling out of the tea collecting trough 205 to the feed port of the dust removal unit 3 .

[0043] Furthermore, the dust removal unit 3 includes a roller transport group, a dust removal box is placed on the upper part of the roller transport group, a leakage net is provided at the bottom of the dust removal box, a blowing assembly is provided on the top of the dust removal box, and a collecting trough is provided at the bottom of the roller transport group.

[0044] The filter net can move up and down slightly at the bottom of the dust removal box, that is, sliding grooves are provided on both sides of the dust removal box, sliding rods are provided in the sliding grooves, the filter net is sleeved on the sliding rods, and a spring is provided on the sliding rods, so that the filter net can move along the sliding rods. In this embodiment, a vibrator is provided on the filter net, and the vibrator can be used to vibrate and screen the tea leaves on the filter net, so that the screening of the tea leaves is more complete.

[0045] By arranging a blowing assembly on the top of the dust removal box, the white tea placed in the dust removal box is dusted, so that dust and unqualified products enter the collecting tank through the leakage net, ensuring the quality of the white tea to be packaged as a finished product.

[0046] Furthermore, the metal detection unit 4 includes a frame, which is located on both sides of the conveyor belt, and a metal detector is arranged on the top of the frame.

[0047] The white tea after secondary dust removal is tested with a metal detector to ensure that no metal impurities are adhered to the white tea in the previous production steps.

[0048] A method for white tea production. The visual detection module is arranged on the lifting component 1. The visual detection module is used to take pictures of tea leaves and then send the taken pictures to the second processor. After receiving the pictures, the second processor statistically analyzes the particle size of the tea leaves in the pictures. If the proportion of the tea leaves with small particles < 15%, the second processor sends a control command to adjust the first baffle 207 to slide towards the end of the arc-shaped sliding groove 206 closest to the blower 201, and adjusts the second baffle, the third baffle, and the fourth baffle to slide towards the end of the arc-shaped sliding groove 206 farthest from the blower 201; if the proportion of the tea leaves with small particles ≥ 15% and < 48%, the second processor sends a control command to adjust the first baffle 207, the second baffle, the third baffle, and the fourth baffle to slide towards the middle of the arc-shaped sliding groove 206; if the proportion of the tea leaves with small particles ≥ 48%, the second processor sends a control command to adjust the first baffle 207, the second baffle, and the fourth baffle to slide towards the end of the arc-shaped sliding groove 206 farthest from the blower 201, and adjusts the third baffle to slide towards the end of the arc-shaped sliding groove 206 closest to the blower 201.

[0049] The particle size of the tea leaves is judged by the visual detection module, and then the positions of the first baffle 207, the second baffle, the third baffle, and the fourth baffle are adjusted, so that different collection grooves can collect as much tea leaves of the same quality as possible, which is convenient for subsequent different packaging processes for tea leaves of different qualities, and greatly reduces the subsequent screening process for tea leaves of different qualities.

[0050] Furthermore, the photographing module is used to take real-time pictures of the fresh leaves in the withering area and then send the taken pictures to the first processor. After receiving the pictures, the first processor compares them with the standard sample data to obtain the difference between the pictures received at the current moment and the standard sample data, and then adjusts the wind force or temperature of the constant-temperature blower 201 in the withering area according to the degree of difference, so as to accelerate or slow down the withering duration and ensure that the withering degree of the fresh tea can meet the subsequent processes.

[0051] The fresh leaves are photographed by the photographing module, and then different withering rates can be carried out according to the different sizes or types of the fresh leaves, which improves the efficiency of the fresh leaf withering process.

[0052] Further, the detection module includes a moisture detection module and a calculation module. The moisture detection module is used to analyze the drying degree of the tea leaves themselves and compare the detected drying degree with the standard drying degree. The calculation module is used to calculate the total number of groups of tea leaf detections and the total number of groups of qualified tea leaves, and analyze and compare the total number of groups of tea leaf detections and the total number of groups of qualified tea leaves. If the ratio of the total number of groups of qualified tea leaves to the total number of groups of tea leaf detections is ≤ 85%, the tea leaves in the dryer will continue to be dried until the ratio of the total number of groups of qualified tea leaves to the total number of groups of tea leaf detections is > 85%, and then the dried tea leaves will be sent to the screening area.

[0053] Through the visual detection module, the photography module and the detection module, automatic detection and control are realized among the withering area, the tea nurturing area, the screening area and the packaging area 5, reducing the participation of manual labor and thus improving the production efficiency of tea leaves.

[0054] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An apparatus for white tea production, characterized in that, Including: Withering area, where a conveyor belt is provided. Fresh leaves are conveyed from the inlet of the conveyor belt to the outlet of the conveyor belt. Constant-temperature blowers are provided on both the left and right sides of the conveyor belt, and a photography module is provided on the conveyor belt. Tea nurturing area, where a tea nurturer and a dryer are provided. The inlet of the tea nurturer is communicated with the outlet of the conveyor belt, the outlet of the tea nurturer is communicated with the inlet of the dryer, and a detection module is provided at the outlet of the dryer for randomly sampling the dried tea multiple times. Screening area, where the inlet of the screening area is communicated with the outlet of the dryer. The screening area includes a pneumatic feeding machine, a dust removal unit, and a metal detection unit. The inlet of the pneumatic feeding machine is communicated with the outlet of the dryer, the outlet of the pneumatic feeding machine is communicated with the inlet of the dust removal unit, the metal detection unit is installed at the rear end of the outlet of the dust removal unit, and a visual monitoring module is provided on the pneumatic feeding machine. Packaging area, which is used to package different grades of white tea screened from the screening area.

2. The device and method for white tea production according to claim 1, characterized in that, The pneumatic feeding machine includes a feeding end, a lifting component, and a discharging end. The bottom of the feeding end is communicated with the starting point of the lifting component, the end point of the lifting component is communicated with the top of the discharging end. The lifting component includes a horizontal part, and one side of the horizontal part away from the feeding end extends obliquely upward to form a lifting part. Rotating gear sets are provided at the bottom of the horizontal part and the top of the lifting part. The rotating gear set includes a driving gear rod arranged inside the lifting component, a tooth chain meshing with the driving gear rod, and a supporting plate fixed to the tooth chain. The supporting plate supports the bottom of the horizontal part and the bottom of the lifting part respectively.

3. The device and method for white tea production according to claim 2, characterized in that, The pneumatic feeding machine further includes a housing. One end of the housing is provided with a blower, the air outlet of the blower is communicated with the housing, and a feeding port is further provided at one end of the housing close to the air outlet of the blower. A dust discharge port is provided at the end of the housing away from the blower. The bottom of the housing is successively provided with a first collection tank, a tea collection tank, a second collection tank, a third collection tank, and a fourth collection tank from the side close to the blower to the side close to the dust discharge port. A first baffle is provided between the first collection tank and the tea collection tank, a second baffle is provided between the tea collection tank and the second collection tank, a third baffle is provided between the second collection tank and the third collection tank, and a fourth baffle is provided between the third collection tank and the fourth collection tank.

4. The device for white tea production according to claim 3, characterized in that, A number of arc-shaped sliding grooves are provided on the outer surface of the housing. The first baffle, the second baffle, the third baffle, and the fourth baffle can all slide along the arc-shaped sliding grooves.

5. The device for white tea production according to claim 3, characterized in that, A transportation component is provided at the bottom of the tea collection tank for transporting the tea falling out of the tea collection tank to the inlet of the dust removal unit.

6. The device for white tea production according to claim 1, characterized in that, The dust removal unit includes a roller conveyor group, above which a dust removal box is placed. A leakage net is provided at the bottom of the dust removal box, and a blowing component is provided at the top of the dust removal box. A collection tank is provided at the bottom of the roller conveyor group.

7. The device for white tea production according to claim 1, characterized in that, The metal detection unit includes a frame located on both sides of the conveyor belt, and a metal detector is provided at the top of the frame.

8. A method for white tea production, characterized in that, Applied to a device for white tea production as described in any one of claims 1-7, the vision detection module is arranged on the lifting component. The vision detection module is used to take pictures of the tea leaves and then send the taken pictures to the second processor. After receiving the pictures, the second processor statistically analyzes the particle size of the tea leaves in the pictures. If the proportion of the small-particle tea leaves < 15%, the second processor sends a control command to adjust the first baffle to slide to the end of the arc-shaped sliding groove closest to the blower, and adjusts the second baffle, the third baffle, and the fourth baffle to slide to the end of the arc-shaped sliding groove farthest from the blower; if the proportion of the small-particle tea leaves ≥ 15% and < 48%, the second processor sends a control command to adjust the first baffle, the second baffle, the third baffle, and the fourth baffle to slide to the middle of the arc-shaped sliding groove; if the proportion of the small-particle tea leaves ≥ 48%, the second processor sends a control command to adjust the first baffle, the second baffle, and the fourth baffle to slide to the end of the arc-shaped sliding groove farthest from the blower, and adjusts the third baffle to slide to the end of the arc-shaped sliding groove closest to the blower.

9. The method for white tea production according to claim 8, wherein, The photographing module is used to take real-time pictures of the fresh tea leaves in the withering area and then send the taken pictures to the first processor. After receiving the pictures, the first processor compares them with the standard sample data to obtain the difference between the pictures received at the current moment and the standard sample data, and then adjusts the wind force or temperature of the constant-temperature blower in the withering area according to the degree of difference, so as to accelerate or slow down the withering time and ensure that the withering degree of the fresh tea can meet the subsequent processes.

10. The method for white tea production according to claim 8, characterized in that, The detection module includes a moisture detection module and a calculation module. The moisture detection module is used to analyze the dryness of the tea leaves themselves and compare the detected dryness with the standard dryness. The calculation module is used to calculate the total number of groups of tea leaf detections and the total number of groups of qualified tea leaves, and analyze and compare the total number of groups of tea leaf detections and the total number of groups of qualified tea leaves. If the ratio of the total number of groups of qualified tea leaves to the total number of groups of tea leaf detections ≤ 85%, the tea leaves in the dryer continue to be dried until the ratio of the total number of groups of qualified tea leaves to the total number of groups of tea leaf detections > 85%, and then the dried tea leaves are sent to the screening area.

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