Green tea roasting and flavoring machine
By combining a ring-shaped mesh cylinder and filter cover with a centrifugal fan, the problems of tea leaf accumulation and quality during green tea frying are solved, achieving efficient and integrated tea processing and improving tea processing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN HONGJUN AGRICULTURAL DEVELOPMENT CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-10
AI Technical Summary
In the current green tea frying process, the mechanical heating and stirring action is monotonous and cannot be adjusted, which leads to the tea leaves piling up, being squeezed and broken or sticking together, affecting the quality. Moreover, the three processes are carried out separately, resulting in low efficiency.
The design employs a ring-shaped mesh cylinder and filter cover, combined with a centrifugal fan and a return pipe to form a cyclone-type air extraction and adsorption system, achieving high-temperature fixation, moisture evaporation, and automated tumbling of tea leaves, integrating the three major processes into one.
It improves the efficiency of tea processing, avoids tea breakage and sticking, ensures tea quality, and achieves efficient integrated operation of the three processes.
Smart Images
Figure CN224473935U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tea frying technology, and in particular to a green tea frying and aroma-enhancing machine. Background Technology
[0002] The processing of green tea involves three basic steps after the fresh leaves are picked: fixation, rolling, and drying. Fixation aims to kill the catalytic enzymes in the fresh leaves, maintain the green color of the tea leaves, and make them lose some moisture and become soft so that they can be shaped. Rolling aims to make the tea leaves take a certain shape and break the tea cells, so that the leaf juice is rolled out and attached to the surface of the leaves. When brewing, the tea juice can dissolve in water. Drying aims to prevent the tea leaves from deteriorating and make them easier to store.
[0003] The aroma of green tea mainly comes from the aromatic oils in the tea leaves, with polyphenols, amino acid derivatives, and some sugars also playing a role in enhancing the aroma during the aforementioned steps. Nowadays, large-scale green tea processing often uses mechanical heating, frying, and drying. The frying process involves a single, rigid turning motion, making it impossible to adjust the applied force. Too much tea leaves piled up in the frying path can cause strong compression and breakage, while too little leaves will not achieve the desired compression effect, making it difficult to control the quality of tea processing. In addition, the tea leaves are in direct contact with the heated wok, and some leaves are prone to sticking to the wok wall for a long time, resulting in scorching and affecting the overall frying quality. Furthermore, the efficiency of performing these three processes sequentially is not high. Utility Model Content
[0004] The purpose of this utility model is to provide a green tea frying and aroma-enhancing machine that eliminates the use of traditional frying pans and tea frying spatulas, avoiding the frying problems associated with them, and instead performs a natural frying and turning process, integrating the three major processes of tea processing, thereby improving the efficiency of tea processing.
[0005] To achieve the above objectives, a green tea roasting and aroma-enhancing machine is provided, comprising: a silo; an electric heating base fitted to the outer side of the silo; a ring frame fixedly connected to the lower inner side of the silo; an annular mesh cylinder supported on the upper side of the ring frame; filter covers symmetrically engaged on the upper and lower sides of the annular mesh cylinder; a cover fitted to the top of the silo; a hinge frame on the right side of the cover that rotates with the silo; a centrifugal fan fixedly fitted at the top center of the cover; the bottom input end of the centrifugal fan communicating with the interior of the silo; a return pipe fixedly connected to the left output end of the centrifugal fan; the bottom end of the return pipe extending to the right and communicating with and fixedly connected to the silo; a drying cylinder fixedly connected to the upper middle end of the return pipe; a sealing seat slidably fitted and engaged with the rear side of the drying cylinder in a front-to-back direction; and a drying filter element slidably fitted and engaged downwards at the top center of the sealing seat. The upper and lower ends of the drying filter element are coaxially connected to the return pipe. A ring-shaped mesh cylinder and filter cover are used to store fresh tea leaves in a breathable and sealed manner, preventing direct contact with the electric heating base. A flip-top cover is installed above the silo, and a centrifugal fan is used to cyclone and adsorb the tea leaves in the silo. This, combined with the return pipe, forms an upward circulating air vortex in the silo. In addition, a drying cylinder is installed at the upper end of the return pipe, which works with the drying filter element to dry and adsorb the evaporated moisture. As a result, the tea leaves in the ring-shaped mesh cylinder can soften and become lighter after being withered at high temperature and evaporating moisture. They then rise and tumble with the air vortex, automatically colliding and curling with the inner surfaces of the ring-shaped mesh cylinder and filter cover. This eliminates the use of traditional woks and tea shovels, avoiding the problems associated with traditional frying. Instead, a natural frying process is carried out, integrating the three major processes of tea processing and improving the efficiency of tea processing.
[0006] According to the aforementioned green tea roasting and aroma-enhancing machine, a ring seat is fixedly connected to the bottom of the silo, and a collection box is slidably engaged with the front side of the ring seat. Multiple layers of filter screens are fixedly connected to the bottom inner side of the silo. This allows some tea leaves with pore sizes to fall and be collected naturally.
[0007] According to the green tea roasting and aroma-enhancing machine described above, the pore size of the filter cover on the upper side of the annular mesh cylinder is one-third that of the filter cover on the lower side. This prevents larger tea leaf fragments from entering the centrifugal fan.
[0008] According to the aforementioned green tea roasting and aroma-enhancing machine, a sealing rubber ring is fixedly surrounding the top of the outer side of the silo, and the top of the sealing rubber ring is pressed and fitted against the lid. This provides a buffered closure and reinforced seal, preventing hard impacts and gas leakage at the joint.
[0009] According to the aforementioned green tea roasting and aroma-enhancing machine, the electric heating base consists of a ring frame, several ring-arrayed electric heating wires, and an external power supply base. The outer side of the electric heating base is covered with a heat-insulating shell to reduce heat dissipation and ensure the effective roasting process.
[0010] According to the aforementioned green tea roasting and aroma-enhancing machine, a sealing gasket is provided on the outer periphery of the side where the drying cylinder and the upper reflux pipe are movably connected and fit together. The bottom of the sealing gasket is fixed to the drying cylinder, and a semi-circular notch is provided on the left side of the sealing gasket, which is squeezed and fitted to the reflux pipe for sealing. The upper reflux pipe is squeezed and sealed when the cover is closed and it fits into the drying cylinder to prevent air leakage.
[0011] According to the green tea roasting and aroma-enhancing machine, a handle is fixedly connected to the center of the rear side of the sealing seat. This facilitates the removal of the sealing seat for quick replacement of the drying filter element.
[0012] According to the aforementioned green tea roasting and aroma-enhancing machine, a handle is fixedly connected to the center of the front side of the recycling box. The front handle of the handle is arc-shaped and centered on the ring seat. This facilitates quick pulling out of the recycling box and also features an aesthetically pleasing design, avoiding sharp edges.
[0013] The above-mentioned solution has the following beneficial effects:
[0014] In this invention, a ring-shaped mesh cylinder with a filter cover is used to store fresh tea leaves in a breathable, sealed manner, preventing direct contact with the electric heating base. A flip-top lid is then installed above the cylinder, and a centrifugal fan uses a cyclone-like suction system to draw air from the tea leaves. This, combined with a return pipe, creates an upward-flowing airflow within the cylinder. Furthermore, a drying cylinder with a drying filter is installed at the upper end of the return pipe to dry and absorb the evaporated moisture. This allows the tea leaves in the ring-shaped mesh cylinder to soften and lose moisture at high temperatures, then rise and tumble with the airflow, automatically colliding and curling against the inner surfaces of the ring-shaped mesh cylinder and filter cover. This eliminates the need for traditional woks and tea shovels, avoiding the problems associated with traditional frying methods, and instead achieves a natural, tumbling frying process. This integrates the three main steps of tea processing, improving efficiency.
[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0017] Figure 1 This is a schematic diagram of the overall structure of a green tea frying and aroma-enhancing machine according to this utility model;
[0018] Figure 2 This is a cross-sectional view of the middle silo and annular mesh cylinder of a green tea frying and aroma-enhancing machine according to this utility model;
[0019] Figure 3This is a schematic diagram of the connection structure of the electric heating base in a green tea frying and aroma-enhancing machine according to this utility model;
[0020] Figure 4 This is a schematic diagram of the connection structure of the drying cylinder in a green tea frying and aroma-enhancing machine according to this utility model.
[0021] Legend:
[0022] 1. Silo; 2. Electric heating base; 3. Ring frame; 4. Annular mesh cylinder; 5. Filter cover; 6. Cover; 7. Hinge frame; 8. Centrifugal fan; 9. Return pipe; 10. Drying cylinder; 11. Sealing seat; 12. Drying filter element; 13. Ring seat; 14. Recovery box; 15. Multi-layer filter screen; 16. Sealing rubber ring; 17. Heat insulation shell; 18. Sealing gasket ring; 19. Handle; 20. Pull handle. Detailed Implementation
[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0024] Reference Figure 1-4 This utility model provides a green tea roasting and aroma-enhancing machine, including: a silo 1, an electric heating base 2 fitted to the outside of the silo 1, the electric heating base 2 is composed of a ring frame and several electric heating wires arranged in a ring array thereon and an external power supply base, the outside of the electric heating base 2 is covered with a heat insulation shell 17, providing a comprehensive and uniform heating base.
[0025] A ring frame 3 is fixedly connected to the lower inner side of the silo 1. An annular mesh cylinder 4 is provided on the upper support frame of the ring frame 3. Filter covers 5 are symmetrically engaged on the upper and lower sides of the annular mesh cylinder 4 to provide breathable and sealed storage for fresh tea leaves, preventing them from directly contacting the electric heating base 2.
[0026] The top of the silo 1 is fitted with a cover 6. A hinge frame 7 is provided on the right side of the cover 6 and rotates in coordination with the silo 1. A centrifugal fan 8 is embedded and fixed at the top center of the cover 6. The bottom input end of the centrifugal fan 8 is connected to the inside of the silo 1. The left output end of the centrifugal fan 8 is connected and fixed with a return pipe 9. The bottom end of the return pipe 9 extends to the right and is connected and fixed to the silo 1. The tea leaves in the silo 1 are subjected to cyclone-type air extraction and adsorption. With the help of the return pipe 9, an upward circulating air vortex is formed in the silo 1.
[0027] A drying cylinder 10 is fixedly connected to the upper middle end of the return pipe 9. A sealing seat 11 is fitted and slidably connected to the rear side of the drying cylinder 10 in the front-back direction. A handle 19 is fixedly connected to the center of the rear side of the sealing seat 11. A drying filter element 12 is fitted and slidably assembled downward at the center of the top of the sealing seat 11. Both the upper and lower ends of the drying filter element 12 are coaxially connected to the return pipe 9 to dry and adsorb the evaporated water vapor in the circulating hot gas.
[0028] The pore size of the filter cover 5 on the upper side of the annular mesh cylinder 4 is one-third that of the filter cover 5 on the lower side. The bottom of the silo 1 is connected to and fixed with a ring seat 13. The front side of the ring seat 13 is slidably engaged with a recycling box 14. The inner bottom of the silo 1 is fixedly connected with multiple layers of filter screens 15. The center of the front side of the recycling box 14 is fixedly connected with a handle 20. The front handle of the handle 20 is arc-shaped and has the same center as the ring seat 13. It allows tea leaves that match the pore size between the upper and lower filter covers 5 to fall naturally and be recycled.
[0029] A sealing rubber ring 16 is fixedly surrounding the top of the outer side of the silo 1. The top of the sealing rubber ring 16 is pressed and fitted with the cover 6. The drying cylinder 10 is movably connected to the return pipe 9 on its upper side, and a sealing gasket 18 is provided on the outer periphery of the two mating and fitting sides. The bottom of the sealing gasket 18 is fixed to the drying cylinder 10. The left side of the sealing gasket 18 has a semi-circular notch, which is pressed and fitted with the return pipe 9 to ensure the airtightness of the hot gas circulation and reduce the risk of air leakage.
[0030] Working Principle: In this invention, a ring-shaped mesh cylinder 4 and a filter cover 5 are used to store fresh tea leaves in a breathable, sealed manner, preventing direct contact between the fresh tea leaves and the electric heating base 2. A flip-top cover 6 is installed above the silo 1, and a centrifugal fan 8 uses a cyclone-style suction and adsorption system to draw air from the tea leaves inside the silo 1. This, combined with a return pipe 9, creates an upward-flowing airflow within the silo 1. Furthermore, a drying cylinder 10 is fitted at the upper end of the return pipe 9, along with a drying filter element 12, to dry and adsorb the evaporated moisture. This allows the tea leaves inside the ring-shaped mesh cylinder 4 to soften and become lighter after high-temperature processing, rising and tumbling with the airflow. They then automatically collide and curl against the inner surfaces of the ring-shaped mesh cylinder 4 and the filter cover 5. This eliminates the need for traditional woks and tea shovels, avoiding the problems associated with traditional frying methods. Instead, a natural frying process is implemented, integrating the three main steps of tea processing and improving efficiency.
[0031] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A green tea roasting and aroma-enhancing machine, comprising: The silo (1) is characterized in that an electric heating seat (2) is fitted to the outer side of the silo (1), a ring frame (3) is fixedly connected to the lower inner side of the silo (1), an annular mesh cylinder (4) is provided on the upper support frame of the ring frame (3), and filter covers (5) are symmetrically engaged on the upper and lower sides of the annular mesh cylinder (4). The top of the silo (1) is fitted with a cover (6), and a hinge frame (7) is provided on the right side of the cover (6) and rotates in coordination with the silo (1). A centrifugal fan (8) is fitted and fixed at the top center of the cover (6). The bottom input end of the centrifugal fan (8) is connected to the inside of the silo (1). The left output end of the centrifugal fan (8) is connected and fixed with a return pipe (9). The bottom end of the return pipe (9) extends to the right and is connected and fixed with the silo (1). The upper and middle ends of the return pipe (9) are connected to and fixed with a drying cylinder (10). A sealing seat (11) is fitted and slidably connected to the rear side of the drying cylinder (10) in the front-back direction. A drying filter element (12) is fitted and slidably assembled at the top center of the sealing seat (11). Both the upper and lower ends of the drying filter element (12) are coaxially connected with the return pipe (9).
2. The green tea roasting and aroma-enhancing machine according to claim 1, characterized in that, The bottom of the silo (1) is connected to and fixed with a ring seat (13), and a recycling box (14) is slidably engaged with the front side of the ring seat (13). A multi-layer filter screen (15) is fixedly connected to the bottom inner side of the silo (1).
3. The green tea roasting and aroma-enhancing machine according to claim 1, characterized in that, The pore size of the filter cover (5) on the upper side of the annular mesh cylinder (4) is one-third that of the filter cover (5) on the lower side.
4. The green tea roasting and aroma-enhancing machine according to claim 1, characterized in that, A sealing rubber ring (16) is fixed around the top of the outer side of the silo (1), and the top of the sealing rubber ring (16) is pressed and adhered to the cover (6).
5. The green tea roasting and aroma-enhancing machine according to claim 1, characterized in that, The electric heating base (2) is composed of a ring frame and several ring arrays of electric heating wires on it, together with an external power supply base. The outer side of the electric heating base (2) is covered with a heat insulation shell (17).
6. The green tea roasting and aroma-enhancing machine according to claim 1, characterized in that, A sealing gasket (18) is provided on the outer periphery of the side where the drying cylinder (10) is movably connected to the reflux pipe (9) on its upper side and the two are mated together. The bottom of the sealing gasket (18) is fixed to the drying cylinder (10). The left side of the sealing gasket (18) is provided with a semi-circular notch and is pressed and sealed to the reflux pipe (9).
7. The green tea roasting and aroma-enhancing machine according to claim 1, characterized in that, A handle (19) is fixedly connected to the center of the rear side of the sealing bracket (11).
8. A green tea roasting and aroma-enhancing machine according to claim 2, characterized in that, A handle (20) is fixedly connected to the center of the front side of the recycling box (14). The front handle of the handle (20) is arc-shaped and has the same center as the ring seat (13).