Apparatus for detecting degree of withering of black tea and method of detecting

Abstract

The present application relates to a kind of black tea withering degree detection equipment and its detection method, it is related to weight detection technical field, including withering groove, hot air unit, several withering leaf frame, several floating support device and several airflow control device, withering groove bottom is equipped with reference belt hole inclined plate, several airflow control rods are equipped on reference belt hole inclined plate, airflow control device is along the airflow control rod of reference belt hole inclined plate top sliding, the diameter of the bottom of airflow control rod to the top of airflow control rod gradually increases, airflow control device gradually opens larger when sliding down along airflow control rod, withering leaf frame is placed on corresponding floating support device, floating support device is drivingly connected with corresponding airflow control device, the side of reference belt hole inclined plate close to hot air unit is lower than the side away from hot air unit, withering groove forms heat supply cavity on the downside of reference belt hole inclined plate, hot air unit is communicated with the heat supply cavity of withering groove, withering is evenly realized.

Description

Technical Field

[0001] This invention relates to the field of weight detection technology, and in particular to a device and method for detecting the degree of withering in black tea. Background Technology

[0002] Withering, also known as withering carving, is a key process in tea making. It involves spreading fresh leaves in a specific temperature and humidity environment, which promotes enzyme activity and triggers physicochemical changes, causing the leaves to lose moisture, the stems and leaves to wilt, and the grassy smell to dissipate, thus laying the foundation for subsequent steps such as rolling and fermentation.

[0003] This process controls the transformation of fresh leaves by adjusting the thickness of the leaves, temperature, humidity, and time. Traditional methods include natural withering, sun withering, and trough withering, while modern methods mostly use semi-mechanized withering troughs. White tea, black tea, and oolong tea all begin with withering, but to varying degrees: white tea requires the leaf moisture content to be reduced to below 40%, black tea to around 60%, and oolong tea to between 68-70%.

[0004] Existing withering equipment is designed to ensure uniform and controllable withering by designing the slope of the trough bottom, manually controlling the paving thickness, and manually turning the trough. However, existing withering troughs still face the problem of uneven withering. Summary of the Invention

[0005] To overcome the technical defects of the existing technology, the present invention provides a detection device and method for detecting the degree of withering of black tea, so as to achieve uniform withering.

[0006] The technical solution adopted in this invention is:

[0007] The equipment for detecting the degree of withering of black tea includes a withering trough, a hot air unit, several withering leaf collection frames, several floating support devices, and several airflow control devices. The bottom of the withering trough is provided with a reference perforated inclined plate. Several airflow control rods are provided on the reference perforated inclined plate. The airflow control devices slide along the airflow control rods at the top of the reference perforated inclined plate. The diameter of the airflow control rods gradually increases from the bottom to the top. As the airflow control devices gradually dehydrate and become lighter, they slide upwards along the airflow control rods, thus gradually reducing the diameter. The withering leaf collection frames are placed on corresponding floating support devices, which are connected to the corresponding airflow control devices. The side of the reference perforated inclined plate closer to the hot air unit is lower than the side farther from the hot air unit. The reference perforated inclined plate is installed inside the withering trough, and a heating chamber is formed on the lower side of the withering trough. The hot air unit is connected to the heating chamber of the withering trough.

[0008] Preferably, the inner sidewall of the withering trough is provided with a plurality of limiting plates, and each withering leaf frame slides between adjacent limiting plates.

[0009] Preferably, the hot air unit includes a tubular stove and a blower, the tubular stove and the blower are connected to each other, and the blower is connected to the heating chamber.

[0010] Preferably, the lower side of the withering frame is provided with several ventilation holes, and the depth of the frame is 10 cm to 15 cm.

[0011] Preferably, the floating support device includes a floating support rod, a floating reference plate, and a floating reference spring. The floating reference plate is installed on the inner wall of the withering tank. The floating support rod slides along the floating reference plate. A lower pressure plate is provided at the top of the floating support rod. The lower pressure plate presses on the top of the floating reference spring. The lower side of the floating reference spring presses on the floating reference plate. The floating support rod passes through the airflow control device and hooks onto the airflow control device.

[0012] Preferably, the airflow control device includes an airflow control plate, which has a plurality of airflow control holes adapted to the airflow control rod, and the airflow control plate is installed at the bottom of the floating support device.

[0013] Preferably, the inclination angle of the reference perforated inclined plate relative to the horizontal plane is 1.5 degrees to 2.5 degrees.

[0014] The method for detecting the degree of withering in black tea, using equipment for detecting the degree of withering, includes the following steps:

[0015] S1: The hot air unit vents air into the heating chamber;

[0016] S2: Spread the tea leaves in each withering frame, and place each withering frame on the corresponding airflow control device;

[0017] S3: The airflow control device descends under the downward pressure of the withering leaf frame. As the airflow control device slides down along the airflow control rod, the passage gradually opens and enlarges, thereby ensuring that the more tea leaves there are, the more air is supplied.

[0018] S4: As the moisture content of the tea leaves gradually decreases, the airflow control device slides upward along the airflow control rod, and the diameter gradually decreases, which facilitates the redistribution of moisture in the tea leaves and makes dehydration more uniform.

[0019] S5: Turn off the hot air unit for one hour after every half hour of ventilation, and turn the tea leaves over immediately after turning off the hot air unit.

[0020] The beneficial effects of this invention are:

[0021] The bottom of the withering tank is equipped with a reference perforated inclined plate, which facilitates the supply and distribution of hot air. Several airflow control rods are mounted on the reference perforated inclined plate. An airflow control device slides along the airflow control rod at the top of the reference perforated inclined plate. The diameter of the airflow control rod gradually increases from its bottom to its top. As the airflow control device gradually dehydrates and becomes lighter, it slides upwards along the airflow control rod, thus gradually reducing the diameter. This achieves the goal of a lighter withering frame and a smaller hot air supply; in other words, a heavier withering frame with more blades results in a larger hot air supply, promoting uniform withering. The withering frame rests on a corresponding floating support device, which is connected to the corresponding airflow control device. It is worth noting that because the reference perforated inclined plate is inclined, the floating support device closer to the hot air unit is longer, ensuring that each withering frame is set horizontally and at the same height. Ventilation holes are also required at the bottom of the withering frame to allow hot air to be transported upwards. Furthermore, to prevent interference, the floating support device is perpendicular to the reference perforated inclined plate.

[0022] The side of the reference perforated inclined plate closer to the hot air unit is lower than the side farther away from the hot air unit. After the withering blade frames are covered, the cross-sectional area of ​​the channel between the reference perforated inclined plate and the withering blade frames is smaller the further away from the hot air unit, so as to achieve the even distribution of heat. The reference perforated inclined plate is installed in the withering trough, and the withering trough forms a heating chamber on the lower side of the reference perforated inclined plate. The hot air unit is connected to the heating chamber of the withering trough to maintain the supply of heat. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the withering tank structure.

[0024] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0025] Figure 3 This is a schematic diagram of the hot air handling unit.

[0026] Figure 4 This is a schematic diagram showing the location of the withering leaf support frame.

[0027] Figure 5 This is a schematic diagram of the structure of the present invention.

[0028] Figure 6 This is a schematic diagram showing the relationship between the airflow control device and the reference perforated inclined plate.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Withering trough; 11. Heating chamber; 12. Limiting plate; 13. Reference perforated inclined plate; 131. Airflow control rod;

[0031] 2. Hot air handling unit; 21. Tubular stove; 22. Blower;

[0032] 3. Withered leaf frame;

[0033] 4. Floating support device; 41. Floating support rod; 411. Lower pressure plate; 42. Floating reference plate; 43. Floating reference spring;

[0034] 5. Airflow control device; 51. Airflow control port. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings:

[0036] like Figure 1 — Figure 6 As shown, this embodiment provides a device for detecting the degree of withering of black tea, including a withering tank 1, a hot air unit 2, several withering leaf collection frames 3, several floating support devices 4, and several airflow control devices 5. A reference perforated inclined plate 13 is provided at the bottom of the withering tank 1, which supplies and distributes hot air. Several airflow control rods 131 are provided on the reference perforated inclined plate 13. The airflow control devices 5 slide along the airflow control rods 131 at the top of the reference perforated inclined plate 13. The diameter of the airflow control rods 131 gradually increases from the bottom to the top. As the tea gradually dehydrates and becomes lighter, the airflow control devices 5 slide upwards along the airflow control rods 131, thereby gradually increasing the diameter of the flow path. The size gradually decreases to achieve the goal of making the withering leaf frame 3 lighter and the hot air supply smaller. In other words, the heavier the withering leaf frame 3 is, the more blades it has, and the greater the hot air supply, thus promoting uniform withering. The withering leaf frame 3 is placed on the corresponding floating support device 4, which is connected to the corresponding airflow control device 5. It is worth noting that because the reference perforated inclined plate 13 is inclined, the floating support device 4 is longer the closer it is to the hot air unit 2, thus ensuring that each withering leaf frame 3 is set at the same horizontal height. Ventilation holes are also required at the bottom of the withering leaf frame 3 so that hot air can be transported upward. On the other hand, in order to prevent interference, the direction of the floating support device 4 is perpendicular to the reference perforated inclined plate 13.

[0037] Specifically, the side of the reference perforated inclined plate 13 closer to the hot air unit 2 is lower than the side farther away from the hot air unit 2. After the withering leaf frames 3 are covered, the further away from the hot air unit 2 the position, the smaller the cross-sectional area of ​​the channel between the reference perforated inclined plate 13 and the withering leaf frames 3, so as to achieve the even distribution of hot air. The reference perforated inclined plate 13 is installed in the withering trough 1. The withering trough 1 forms a heating chamber 11 on the lower side of the reference perforated inclined plate 13. The hot air unit 2 is connected to the heating chamber 11 of the withering trough 1 to maintain the supply of hot air.

[0038] Specifically, the inner wall of the withering trough 1 is provided with several limiting plates 12, and each withering leaf frame 3 slides between adjacent limiting plates 12 to maintain the lifting and lowering posture of each withering leaf frame 3.

[0039] Specifically, the hot air unit 2 includes a tubular stove 21 and a blower 22. The tubular stove 21 and the blower 22 are connected to each other. The blower 22 is connected to the heating chamber 11. The blower 22 pumps the air heated by the tubular stove 21 into the heating chamber 11 to maintain continuous heating.

[0040] Specifically, the lower side of the wilting leaf holding frame 3 is provided with several ventilation holes, and the depth of the leaf holding frame is 10 cm to 15 cm, which makes full use of the equipment and prevents the leaves from accumulating and causing incomplete wilting.

[0041] Specifically, the floating support device 4 includes a floating support rod 41, a floating reference plate 42, and a floating reference spring 43. The floating reference plate 42 is installed on the inner wall of the withering tank 1. The floating support rod 41 slides along the floating reference plate 42. A lower pressure plate 411 is provided on the top of the floating support rod 41. The withering leaf frame 3 is placed on the lower pressure plate 411. The lower pressure plate 411 presses on the top of the floating reference spring 43. The lower side of the floating reference spring 43 presses on the floating reference plate 42. The function of the floating reference spring 43 is to drive the airflow control device 5 to rise and fall according to the change in the weight of the blades carried in the withering leaf frame 3. The floating support rod 41 passes through the airflow control device 5 and hooks the airflow control device 5 to achieve the purpose of more sufficient hot air supply as the withering leaf frame 3 becomes heavier. The floating support rod 41 can also be directly installed on the airflow control device 5 through a threaded pair.

[0042] Specifically, the airflow control device 5 includes an airflow control plate, which is provided with a number of airflow control holes 51 that are adapted to the airflow control rod 131 to realize the control of airflow speed. The airflow control plate is installed at the bottom of the floating support device 4.

[0043] Specifically, the inclination angle of the reference perforated inclined plate 13 relative to the horizontal plane is 1.5 degrees to 2.5 degrees.

[0044] The method for detecting the degree of withering in black tea, using equipment for detecting the degree of withering, includes the following steps:

[0045] S1: Hot air unit 2 vents to heating chamber 11;

[0046] S2: Spread the tea leaves in each withering frame 3, and place each withering frame 3 on the corresponding airflow control device 5;

[0047] S3: The airflow control device 5 descends under the downward pressure of the withering leaf frame 3. As the airflow control device 5 slides down along the airflow control rod 131, the passage gradually opens and enlarges, thereby achieving a more abundant air supply as there are more tea leaves.

[0048] S4: As the moisture content of the tea leaves gradually decreases, the airflow control device 5 slides upward along the airflow control rod 131, and the diameter gradually decreases, which facilitates the redistribution of moisture in the tea leaves and makes the dehydration more uniform.

[0049] S5: Turn off the hot air unit 2 for one hour every half hour of ventilation, and turn the tea leaves over immediately after turning off the hot air unit 2.

[0050] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. An apparatus for detecting the degree of withering of black tea, characterized by comprising: The witted trough body, the hot air unit, a plurality of witted leaf frames, a plurality of floating support devices and a plurality of air flow control devices are included, the bottom of the witted trough body is provided with a reference hole inclined plate, a plurality of air flow control rods are arranged on the reference hole inclined plate, the air flow control device slides along the air flow control rod on the top of the reference hole inclined plate, the diameter of the bottom of the air flow control rod gradually increases to the top of the air flow control rod, the air flow control device slides upward along the air flow control rod in the process of gradually dehydrating and becoming lighter, thereby the diameter gradually decreases, the witted leaf frame is placed on the corresponding floating support device, the floating support device is in transmission connection with the corresponding air flow control device, the side of the reference hole inclined plate close to the hot air unit is lower than the side away from the hot air unit, the reference hole inclined plate is installed in the witted trough body, the witted trough body forms a heating cavity on the lower side of the reference hole inclined plate, the hot air unit is in communication with the heating cavity of the witted trough body, the floating support device includes a floating support rod, a floating reference plate and a floating reference spring, the floating reference plate is installed on the inner side wall of the witted trough body, the floating support rod slides along the floating reference plate, the top of the floating support rod is provided with a pressing plate, the pressing plate presses on the top of the floating reference spring, the lower side of the floating reference spring presses on the floating reference plate, the floating support rod passes through the air flow control device, the floating support rod hooks the air flow control device, the air flow control device includes an air flow control plate, a plurality of air flow control holes matched with the air flow control rod are arranged on the air flow control plate, and the air flow control plate is installed at the bottom of the floating support device.

2. The apparatus for detecting the degree of withering of black tea according to claim 1, wherein A plurality of limiting plates are arranged on the inner side wall of the witted trough body, and each witted leaf frame slides between adjacent limiting plates.

3. The apparatus for detecting the degree of withering of black tea according to claim 1, wherein The hot air unit includes a tubular stove and a blower, the tubular stove and the blower are in communication with each other, and the blower is in communication with the heating cavity.

4. The apparatus for detecting the degree of withering of black tea according to claim 1, wherein A plurality of air permeable openings are arranged on the lower side of the witted leaf frame, and the depth of the leaf frame is 10-15 cm.

5. The apparatus for detecting the degree of withering of black tea according to claim 1, wherein The inclination angle of the reference hole inclined plate relative to the horizontal plane is 1.5-2.5 degrees.

6. A method for detecting the degree of withering of black tea, using the black tea withering degree detection apparatus as claimed in claim 1, characterized by, The method includes the following steps: S1: the hot air unit ventilates the heating cavity; S2: tea raw materials are placed in each witted leaf frame, and each witted leaf frame is placed on the corresponding air flow control device; S3: the air flow control device is lowered under the pressing action of the witted leaf frame, and the diameter gradually increases when the air flow control device slides downward along the air flow control rod, thereby realizing that the more tea raw materials, the more air supply; S4: as the water content of the tea gradually decreases, the air flow control device slides upward along the air flow control rod, the diameter gradually decreases, which is beneficial to the redistribution of the water in the tea and makes the dehydration uniform; S5: the hot air unit is closed for one hour every half hour of ventilation, and the tea is stirred when the hot air unit is closed.

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