An integrated device and process for scenting and sieving osmanthus-infused black tea.

Abstract

This invention provides an integrated device for scenting, permeating, and sieving osmanthus black tea. It includes a box support frame with a box body mounted on it. A roller is installed inside the box body. A cavity is located at the bottom of the box body, with an opening on its surface that can be opened or closed. Openings are located on the front and rear sides of the roller on the box body surface. A permeating cover and a sieving cover, both operable and closable, are respectively installed at these openings. Holes are provided on the permeating cover and sieving cover. A guide plate is installed on the inner sidewall of the roller. This integrated device for scenting, permeating, and sieving osmanthus black tea can automatically complete the entire process of mixing, scenting, permeating, sieving, and re-scenting osmanthus black tea, reducing labor and human error, thus saving labor, stabilizing the process, and improving quality.

Description

Technical Field

[0001] This invention belongs to the field of tea processing technology, specifically an integrated device and process for scenting, permeating, and sieving osmanthus black tea. Background Technology

[0002] Tea is one of the main economic crops in the mountainous and semi-mountainous areas of Zhejiang Province and an important source of income for rural areas. Among them, Osmanthus Black Tea is one of the famous and high-quality teas in Zhejiang Province.

[0003] Osmanthus black tea is typically processed using a scenting method. The traditional scenting process for osmanthus black tea includes: mixing tea and flowers, scenting, cooling, re-scenting, enhancing the aroma, and drying. The key steps are scenting and cooling. During scenting, the fresh flowers release a large amount of carbon dioxide and heat due to respiration, reaching temperatures above 40°C. Due to the heat, fresh osmanthus flowers cannot maintain their freshness for more than 12 hours before developing a musty aroma. If cooling is not timely, a rotten smell will appear. Therefore, multiple turnings are required to dissipate heat, which not only involves a large workload but also results in significant changes in the processing environment and unstable product quality.

[0004] The conventional scenting process for osmanthus tea involves repeatedly spreading and cooling the tea pile and repeating the scenting process to avoid excessively high temperatures that could produce a musty smell and affect the quality of the tea. It also has problems such as complex production process, large workload, and low efficiency. Each time the tea is scented, it needs to be moved and turned manually, which has a significant impact on the integrity and quality of the osmanthus black tea, resulting in unstable process, difficulty in controlling product quality, and inconsistency. Summary of the Invention

[0005] In order to solve the above-mentioned problems in the prior art, the purpose of this invention is to provide an apparatus and process for automating the large-scale scenting of osmanthus black tea.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: An integrated device for scenting, perforating, and sieving osmanthus black tea includes a box support frame, a box body mounted on the support frame, a roller inside the box body, a cavity at the bottom of the box body, an opening that can be opened or closed on the surface of the box body, openings on the front and rear sides of the roller, and perforation covers and sieving covers that can be opened or closed respectively at the openings on the front and rear sides of the roller, each with holes. Guide plates are mounted on the inner sidewalls of the roller. The roller is rotatable, and the box body can rotate forward or backward relative to the box support frame. The roller is connected to a roller rotation motor, and the box body is connected to a box rotation motor. The device also includes a control box for controlling the operation of the device.

[0007] The aforementioned integrated device for scenting, permeating, and sieving osmanthus black tea features a drum with densely packed air-permeable pores on its inner wall, with a pore density of 10-20 pores / cm². 2 The diameter of the small hole is 0.5-1mm.

[0008] The aforementioned integrated device for scenting and sieving osmanthus black tea, wherein the perforation density on the perforation cover is 20-30 per cm. 2 The diameter of the hole is 1-2mm.

[0009] The aforementioned integrated device for scenting and sieving osmanthus black tea has a pore density of 4-9 pores / cm² on the sieve cover. 2 The diameter of the small hole is 3-5mm.

[0010] The aforementioned integrated device for scenting and sieving osmanthus black tea includes two guide vanes, which are arranged opposite each other on the inner wall of the drum along the length of the drum, and the guide vanes are in the shape of a circular arc protrusion.

[0011] The aforementioned integrated device for scenting, sieving, and separating osmanthus black tea includes a cavity inside the guide plate, with a temperature sensor located at the top center of the cavity inside the guide plate.

[0012] The aforementioned integrated device for scenting and sieving osmanthus black tea features a guide plate with densely distributed small holes on its surface, with a hole density of 10-20 holes / cm². 2 The diameter of the small hole is 0.5-1mm.

[0013] The process of scenting osmanthus black tea using an integrated device for scenting, sieving, and separating osmanthus flowers includes the following steps: (1) Filling with quicklime: Open the cavity opening, fill it with quicklime blocks, and then close the opening; (2) Add black tea and osmanthus: Open the perforated cover or sieve cover, add black tea and osmanthus into the drum in a mass ratio of 5:1, cover with the perforated cover and sieve cover, and lock them in place; (3) Mixing and scenting: Start the drum rotation motor and drive the drum to rotate 3-5 times. After the black tea and osmanthus are mixed evenly through a pair of guide vanes inside the drum, stop rotating. When the drum stops rotating, keep one guide vane at the lowest part of the drum. The black tea and osmanthus are just piled up to cover the guide vane. At this time, the temperature sensor is just located in the center of the scented tea pile. Set the scenting time to about 10-12 hours. (4) Openwork: During the scenting period, when the temperature sensor sends feedback to the control box that the temperature of the scented tea pile exceeds 40°C, the control box first starts the roller rotation motor, drives the roller to rotate 1-2 times and then stops. Then it starts the box body rotation motor, drives the box body to rotate forward 90°, guides the scented tea pile to the openwork cover, and opens the sieve cover for ventilation and heat dissipation for 5-10 minutes. When the temperature sensor sends feedback to the control box that the temperature is below 30°C, the control box closes the sieve cover, starts the box body rotation motor, drives the box body to rotate 90°, then starts the roller rotation motor, drives the roller to rotate 1-2 times and then stops, and continues to repeat the scenting process. (5) Screening: After the scenting time is over, the control box starts the box rotation motor, which drives the box to rotate 90° backward, guiding the scented tea pile to the screening cover, and separating the osmanthus flowers from the tea pile through the screening cover by repeatedly rotating backward. (6) Re-scenting: After step (5) is completed, start the box rotation motor in the control box to rotate the box 90°, open the perforated cover or sieve cover, put 10% of the weight of osmanthus flowers into the drum, cover the perforated cover and sieve cover on both sides of the drum, lock and fix, mix and re-scent according to steps (3) and (4), and set the re-scenting time to 4-8 hours; (7) Extracting flowers: Following step (5), extract the flowers and then take out the osmanthus black tea and put it into storage.

[0014] The beneficial effects of this invention are as follows: The present invention provides an integrated device for scenting, permeating, and sieving osmanthus black tea, which integrates the entire process of mixing, scenting, permeating, sieving, and re-scenting osmanthus black tea, keeping it in a relatively independent space and a relatively stable environment, thereby achieving stable process and product quality, and automating the process, reducing labor intensity and uncontrollable human factors.

[0015] The box of this invention uses a perforated roller to isolate osmanthus flowers, tea leaves, and quicklime in the bottom cavity of the box, while allowing gas exchange through the perforations. The roller can rotate to mix the osmanthus flowers and tea leaves evenly, and the processes of cooling and sieving are carried out using a perforated cover and a sieve cover fitted to the roller opening, respectively.

[0016] The roller of this invention has two covers on both sides, one perforated cover and one sieving cover. Inside the roller, there is a pair of opposing arc-shaped protruding guide vanes. The inner wall of the roller, the two side covers, the inner wall guide vanes, etc. are all covered with densely packed small ventilation holes to ensure uniform heat dissipation during the scenting process. The rotation of the roller and the guide vanes mixes the black tea and osmanthus flowers evenly.

[0017] The present invention has two guide vanes on the inner wall of the drum, which are installed in opposite positions on the inner wall of the drum. The guide vanes are arc-shaped protrusions, which can not only evenly turn over the black tea and osmanthus pile, but also gather the tea leaves on both sides of the drum towards the center, and keep the final scented tea pile in the center position of the drum.

[0018] The present invention provides an integrated device for scenting, permeating, and sieving osmanthus black tea, which can automatically complete the entire process of mixing, scenting, permeating, sieving, and re-scenting of osmanthus black tea. This reduces labor and human instability, resulting in labor savings, stable processes, and improved quality. Attached Figure Description

[0019] Figure 1 This is a front structural diagram of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a front structural diagram of the guide vane plate of the present invention; Figure 4 This is a side view of the guide vane plate of the present invention; In the diagram, 1—box body; 2—drum; 3—drum rotation motor; 4—drum and motor bracket; 5—cavity; 6—box body support frame; 7—perforated cover; 8—screening cover; 9—box body rotation motor; 10—control box; 11—guide vane plate; 12—temperature sensor. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings.

[0021] like Figure 1 and Figure 2 As shown, this invention discloses an integrated device for scenting, permeating, and sieving osmanthus black tea, comprising a box support frame on which a box is mounted. The box is a rectangular cavity, 150-200cm high, 150-200cm long, and 120-150cm wide. A roller is installed inside the box. The lower part of the box has a cavity for holding quicklime or anhydrous silica gel. The cavity has an opening on the surface of the box that can be opened or closed. The roller has openings on both its front and rear sides on the surface of the box. The diameter of the openings on both sides of the box is 100cm, the same as the size of the roller opening. The roller has a diameter of 100cm and a length equal to the length of the box, 150-200cm. The inner wall of the roller is densely covered with small perforations, with a perforation density of 10-20 per cm. 2The diameter of the small holes is 0.5-1mm. The front and rear sides of the roller are equipped with openable and closable perforated covers and screening covers, respectively, for the perforated cooling and screening / greasing processes. Both the perforated and screening covers are made of thin steel plates and are equipped with motors, allowing for opening and closing controlled by a control box. Both covers are equipped with locking mechanisms for securing them to the roller; these can be electronic locks controlled by the control box. The thickness is 2-3mm, and both the perforated and screening covers have holes with a hole density of 20-30 holes / cm² on the perforated cover. 2 The aperture diameter is 1-2 mm. The aperture density on the sieve cover is 4-9 apertures / cm³. 2 The diameter of the small hole is 3-5mm. The roller is rotatable, and the box can rotate 90° forward or backward relative to the box support frame. The roller is connected to the roller rotation motor. In one embodiment of the invention, there are two roller rotation motors, which can control the roller to rotate clockwise or counterclockwise respectively. The box is connected to the box rotation motor, and the roller and motor are mounted on the roller and motor bracket inside the box. The device of the invention also includes a control box for controlling the operation of the device. The control box can start the roller rotation motor and the box rotation motor according to the process flow, receive information from the temperature sensor, and issue working instructions according to the set program. Guide vanes are provided on the inner side wall of the roller. There are two guide vanes, which are arranged opposite each other along the length of the roller on the inner wall of the roller. The guide vanes are arc-shaped protrusions. The arc-shaped protrusions of the guide vanes can not only evenly turn over the black tea and osmanthus pile, but also gather the tea leaves on both sides of the roller towards the center, keeping the final scented tea pile in the center position of the roller. The guide vane has a cavity inside, and a temperature sensor is located at the top center of the cavity. This sensor monitors the temperature of the tea-scenting pile and wirelessly transmits the temperature feedback to the control box. The surface of the guide vane is densely covered with small holes, with a density of 10-20 holes / cm². 2 The diameter of the small holes is 0.5-1mm. The inner wall of the drum, the side covers, and the inner wall guide plate of this invention are all densely covered with small ventilation holes to ensure uniform heat dissipation during the molding process.

[0022] The present invention discloses an integrated device for scenting and sieving osmanthus black tea, comprising the following steps: (1) Filling with quicklime: Open the cavity opening, fill it with quicklime blocks, and then close the opening; (2) Add black tea and osmanthus: Open the perforated cover or sieve cover, add black tea and osmanthus into the drum in a mass ratio of 5:1, cover with the perforated cover and sieve cover, and lock them in place; (3) Mixing and scenting: Start the drum rotation motor and drive the drum to rotate 3-5 times. After the black tea and osmanthus are evenly mixed by a pair of guide vanes inside the drum, stop rotating. When the drum stops rotating, keep one guide vane at the lowest part of the drum (this can be done by keeping one guide vane at the lowest part of the drum in the initial state before the drum rotates, or by using an electromagnetic induction device, etc.). The black tea and osmanthus are just piled up to cover the guide vane. At this time, the temperature sensor is just located in the center of the scented tea pile. Set the scenting time to about 10-12 hours. (4) Openwork: During the scenting period, when the temperature sensor sends feedback to the control box that the temperature of the scented tea pile exceeds 40°C, the control box first starts the roller rotation motor, drives the roller to rotate 1-2 times and then stops. Then it starts the box body rotation motor, drives the box body to rotate forward 90°, guides the scented tea pile to the openwork cover, and opens the sieve cover to ventilate and dissipate heat for 5-10 minutes. When the temperature sensor sends feedback to the control box that the temperature is below 30°C, the control box closes the sieve cover, starts the box body rotation motor, drives the box body to rotate back 90°, and then starts the roller rotation motor, drives the roller to rotate 1-2 times and then stops. The scenting process is repeated. (5) Screening: After the scenting time is over, the control box starts the box rotation motor, which drives the box to rotate 90° backward, guiding the scented tea pile to the screening cover, and separating the osmanthus flowers from the tea pile through the screening cover by repeatedly rotating backward. (6) Re-scenting: After step (5) is completed, start the box rotation motor in the control box to rotate the box 90°, open the perforated cover or sieve cover, put 10% of the weight of osmanthus flowers into the drum, cover the perforated cover and sieve cover on both sides of the drum, lock and fix, mix and re-scent according to steps (3) and (4), and set the re-scenting time to 4-8 hours; (7) Extracting flowers: Following step (5), extract the flowers and then take out the osmanthus black tea and put it into storage.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims

1. An integrated device for scenting, permeating, and sieving osmanthus-scented black tea, characterized in that... The device includes a support frame for a housing, on which a housing is mounted. A roller is housed inside the housing. A cavity is located at the bottom of the housing, with an opening on its surface that can be opened or closed. Openings are located on the front and rear sides of the roller, respectively. Openable and closable perforated covers and screening covers are located at these openings, each with holes. Guide vanes are mounted on the inner sidewalls of the roller. The roller is rotatable, and the housing can rotate forward or backward relative to the support frame. The roller and housing are connected to a roller rotation motor. The device also includes a control box for controlling its operation. Two guide vanes are arranged opposite each other along the length of the roller on its inner wall, and each guide vane has an arc-shaped convex shape. A cavity is located within each guide vane, and a temperature sensor is positioned at the top center of the cavity. The surface of each guide vane is densely covered with small holes, with a hole density of 10-20 per cm². 2 The diameter of the small holes is 0.5-1mm; the inner wall of the roller is densely covered with breathable small holes, with a density of 10-20 holes / cm². 2 The diameter of the small hole is 0.5-1mm.

2. The integrated device for scenting, permeating, and sieving osmanthus black tea as described in claim 1, characterized in that... The perforation density on the perforated cap is 20-30 per cm². 2 The diameter of the hole is 1-2mm.

3. The integrated device for scenting, permeating, and sieving osmanthus black tea as described in claim 1, characterized in that... The pore density on the sieve cover is 4-9 pores / cm². 2 The diameter of the small hole is 3-5mm.

4. A process for scenting osmanthus black tea using an integrated scenting, permeation, and sieving device as described in any one of claims 1 to 3, characterized in that... Includes the following steps: (1) Filling with quicklime: Open the cavity opening, fill it with quicklime blocks, and then close the opening; (2) Add black tea and osmanthus: Open the perforated cover or sieve cover, add black tea and osmanthus into the drum in a mass ratio of 5:1, cover with the perforated cover and sieve cover, and lock them in place; (3) Mixing and scenting: Start the drum rotation motor and drive the drum to rotate 3-5 times. After the black tea and osmanthus are mixed evenly by a pair of guide vanes inside the drum, stop rotating. When the drum stops rotating, keep one guide vane at the lowest part of the drum. The black tea and osmanthus are just piled up to cover the guide vane. At this time, the temperature sensor is just located in the center of the scented tea pile. Set the scenting time to 10-12 hours. (4) Openwork: During the scenting period, when the temperature sensor sends feedback to the control box that the temperature of the scented tea pile exceeds 40°C, the control box first starts the roller rotation motor, drives the roller to rotate 1-2 times and then stops. Then it starts the box body rotation motor, drives the box body to rotate forward 90°, guides the scented tea pile to the openwork cover, and opens the sieve cover for ventilation and heat dissipation for 5-10 minutes. When the temperature sensor sends feedback to the control box that the temperature is below 30°C, the control box closes the sieve cover, starts the box body rotation motor, drives the box body to rotate 90°, then starts the roller rotation motor, drives the roller to rotate 1-2 times and then stops, and continues to repeat the scenting process. (5) Screening: After the scenting time is over, the control box starts the box rotation motor, which drives the box to rotate 90° backward, guiding the scented tea pile to the screening cover, and separating the osmanthus flowers from the tea pile through the screening cover by repeatedly rotating backward. (6) Re-scenting: After step (5) is completed, start the box rotation motor in the control box to rotate the box 90°, open the perforated cover or sieve cover, put 10% of the weight of osmanthus flowers into the drum, cover the perforated cover and sieve cover on both sides of the drum, lock and fix, mix and re-scent according to steps (3) and (4), and set the re-scenting time to 4-8 hours; (7) Extracting flowers: Following step (5), extract the flowers and then take out the osmanthus black tea and put it into storage.

Images