Tea leaf rotary roasting device

Abstract

The utility model discloses a tea rotary baking device, including the box, the inside rotation of box is connected with the baking cylinder, the upper top of baking cylinder is provided with the top, the top of top is fixed and is installed with the protection box in the central end, the top of top one side is fixed and is installed with the heating box, the inside below center of baking cylinder is rotatably connected with the rotating seat, the upper end fixed connection of rotating seat has the limit cylinder, the inside rotation of limit cylinder is connected with the thread rod, the periphery screw thread connection of thread rod has the thread seat, both sides of thread seat all are fixedly connected with the connecting rod, the tea rotary baking device of utility model, has realized the depth of tea's stirring, even heating and efficient moisture removal, effectively prevent scorched and aroma loss, be applicable to the high -quality continuous baking of a variety of tea.

Description

Technical Field

[0001] This utility model relates to the field of tea roasting technology, specifically a tea rotary roasting device. Background Technology

[0002] Tea roasting is a crucial step in the refining process of oolong tea, black tea, white tea, and some green teas. It primarily serves to evaporate excess moisture, deactivate enzymes, stabilize quality, and develop aroma. Traditional roasting methods often involve placing static trays in electric ovens or charcoal roasting cages, which suffers from uneven heating, the need for frequent manual turning, high energy consumption, and easy loss of aroma, making it difficult to meet the demands of modern tea processing for both efficiency and consistent quality.

[0003] Current roasting equipment has a simple inner wall structure of the drum, which makes the tea leaves easy to slide along with the whole drum and lack effective scattering, resulting in local overheating and scorching or uneven roasting. In addition, the turning mechanism is mostly a fixed lifting plate with a single turning intensity, which is difficult to adapt to the processing requirements of different types of tea. Therefore, we have proposed a tea rotary roasting device. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] This utility model relates to a rotating tea roasting device, comprising a housing, a roasting cylinder rotatably connected inside the housing, a top cover on the top of the roasting cylinder, a protective box fixedly installed at the center of the top of the top cover, a heating box fixedly installed on one side of the top of the top cover, a rotating seat rotatably connected at the center of the lower part of the interior of the roasting cylinder, a limiting cylinder fixedly connected at the upper end of the rotating seat, a threaded rod rotatably connected inside the limiting cylinder, a threaded seat threadedly connected to the outer circumference of the threaded rod, and connecting rods fixedly connected to both sides of the threaded seat.

[0006] As a preferred embodiment of this utility model, a rotating rod is fixedly connected to the outer ends of both connecting rods, a spiral blade is fixedly connected to the outer periphery of the rotating rod, and a sliding frame is fixedly connected to the top of the two connecting rods, and the sliding frame is slidably connected to the inside of the limiting cylinder.

[0007] As a preferred technical solution of this utility model, the top of the limiting cylinder is fixedly connected to a rotating disk through the top cover, the top of the threaded rod is fixedly connected to a rotating rod, and scrapers are fixedly connected to the outer periphery of the rotating seat, and the scrapers are in contact with the lower end of the interior of the baking cylinder.

[0008] As a preferred technical solution of this utility model, the top of the limiting cylinder is fixedly connected to a rotating disk through the top cover, the top of the threaded rod is fixedly connected to a rotating rod, and scrapers are fixedly connected to the outer periphery of the rotating seat, and the scrapers are in contact with the lower end of the interior of the baking cylinder.

[0009] As a preferred technical solution of this utility model, a servo motor is fixedly installed on the top outer side of the box, and the output end of the servo motor is connected to a spur gear through a coupling. An annular rack is fixedly connected to the upper outer periphery of the baking cylinder, and the spur gear meshes with the annular rack.

[0010] As a preferred embodiment of this utility model, an annular tube is fixedly connected to the outer side of the upper end of the baking cylinder, and a plurality of nozzles are fixedly connected at equal intervals to the inner side of the annular tube, with the nozzles extending to the inner side of the baking cylinder. A plurality of heating plates are fixedly installed on the inner wall of the baking cylinder.

[0011] As a preferred embodiment of this utility model, a fan is fixedly installed on one side of the interior of the heating box, a filter screen is provided at the output end of the fan, and the filter screen is slidably and detachably connected to the interior of the heating box. A heating wire is provided on one side of the filter screen, a connecting pipe is provided on the outside of the heating box, and one end of the connecting pipe is connected to an annular pipe. A door is rotatably connected to the outside of the baking cylinder via a hinge.

[0012] The beneficial effects of this utility model are:

[0013] 1. This type of tea rotary roasting device drives the threaded rod and the limiting cylinder to rotate in opposite directions through a geared motor, so that the spiral blades rotate inside the roasting cylinder. The up-and-down reciprocating compound motion deeply and three-dimensionally stirs the tea, effectively avoiding the problem of tea slipping or piling up in the cylinder as a whole in traditional drums. This ensures that each tea leaf is heated evenly and prevents local scorching or under-roasting.

[0014] 2. This type of tea rotary roasting device uses a ring tube with circumferentially distributed nozzles to deliver hot air radially, at multiple points, and synchronously into the cylinder. Combined with the auxiliary heating plate on the inner wall, it forms a three-dimensional heat field that works synergistically inside and outside, greatly reducing temperature dead zones, improving heat energy utilization efficiency, and meeting the precise temperature gradient control requirements of different types of tea.

[0015] 3. This type of tea rotary roasting device uses a scraper set on the outer periphery of the rotating seat to rotate synchronously and always run close to the bottom surface of the roasting cylinder. It can scrape off the adhering tea debris or charred matter in real time, preventing the accumulated material from carbonizing and affecting the quality of subsequent batches. At the same time, it reduces the frequency of manual cleaning and improves the continuous operation capability of the equipment. This utility model has a simple and reasonable structure, novel design, and simple and convenient operation, and has high practical value. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a perspective view of the tea rotary roasting device of this utility model;

[0018] Figure 2 This is a schematic diagram of the bevel gear structure of the tea rotary roasting device of this utility model;

[0019] Figure 3 This is a schematic diagram of the threaded rod structure of the tea rotary roasting device of this utility model;

[0020] Figure 4 This is a schematic diagram of the filter screen structure of the tea rotary roasting device of this utility model;

[0021] Figure 5 This is a schematic diagram of the nozzle structure of the tea rotary roasting device of this utility model.

[0022] In the diagram: 1. Box body; 2. Baking cylinder; 3. Top cover; 4. Protective box; 5. Heating box; 6. Rotating seat; 7. Limiting cylinder; 8. Threaded rod; 9. Threaded seat; 10. Connecting rod; 11. Rotating rod; 12. Spiral blade; 13. Sliding frame; 14. Rotating disk; 15. Rotating rod; 16. Gear motor; 17. Bevel gear; 18. Upper helical gear; 19. Lower helical gear; 20. Servo motor; 21. Spur gear; 22. Ring rack; 23. Ring tube; 24. Nozzle; 25. Heating plate; 26. Fan; 27. Filter screen; 28. Heating wire; 29. ​​Connecting tube; 30. Scraper; 31. Box door. Detailed Implementation

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0024] Example: Figures 1-5 As shown, the present invention relates to a rotating tea roasting device, comprising a housing 1. The housing 1 is characterized by a roasting cylinder 2 rotatably connected inside, a top cover 3 on the upper top of the roasting cylinder 2, a protective box 4 fixedly installed at the upper center of the top cover 3, a heating box 5 fixedly installed on one side of the top cover 3, a rotating seat 6 rotatably connected at the lower center of the interior of the roasting cylinder 2, a limiting cylinder 7 fixedly connected at the upper end of the rotating seat 6, a threaded rod 8 rotatably connected inside the limiting cylinder 7, a threaded seat 9 threadedly connected to the outer circumference of the threaded rod 8, and connecting rods 10 fixedly connected to both sides of the threaded seat 9.

[0025] The outer ends of the two connecting rods 10 are fixedly connected to rotating rods 11, and spiral blades 12 are fixedly connected to the outer periphery of the rotating rods 11. The tops of the two connecting rods 10 are fixedly connected to sliding frames 13, and the sliding frames 13 are slidably connected to the inside of the limiting cylinder 7. The sliding frames 13 are slidably connected to the inner wall of the limiting cylinder 7 and move along the axial direction of the limiting cylinder 7. The sliding frames 13 are used to restrict the circumferential rotation of the threaded seat 9, so that when the threaded rod 8 rotates, the threaded seat 9 can only move up and down along the axial direction, and will not rotate synchronously with the threaded rod 8.

[0026] Among them, the top of the limiting cylinder 7 passes through the top cover 3 and is fixedly connected to the rotating disk 14, the top of the threaded rod 8 is fixedly connected to the rotating rod 15, and the outer periphery of the rotating seat 6 is fixedly connected to the scraper 30, and the scraper 30 is in contact with the lower end of the interior of the baking cylinder 2. The scraper 30 is used to clean the tea leaves adhering to the bottom of the baking cylinder 2.

[0027] The protective box 4 is equipped with a geared motor 16 fixedly mounted on its outer side. The output end of the geared motor 16 is connected to a bevel gear 17 via a coupling. The upper outer side of the bevel gear 17 is meshed with an upper helical gear 18, and the center end of the upper helical gear 18 is fixedly connected to the rotating rod 15. The lower outer side of the bevel gear 17 is meshed with a lower helical gear 19, and the center end of the lower helical gear 19 is fixedly connected to the rotating disk 14. The geared motor 16 can simultaneously drive the threaded rod 8 to rotate and the limiting cylinder 7 to rotate in the opposite direction, thereby realizing the compound motion of the spiral blade 12.

[0028] A servo motor 20 is fixedly installed on the top outer side of the housing 1. The output end of the servo motor 20 is connected to a spur gear 21 via a coupling. A ring rack 22 is fixedly connected to the upper outer periphery of the baking cylinder 2. The spur gear 21 and the ring rack 22 are meshed and connected. Through the meshing connection between the spur gear 21 and the ring rack 22, the entire baking cylinder 2 is driven to rotate slowly around its central axis.

[0029] The baking cylinder 2 has an annular tube 23 fixedly connected to the upper outer side, and several nozzles 24 are fixedly connected at equal intervals to the inner side of the annular tube 23. The nozzles 24 extend to the inner side of the baking cylinder 2. Several heating plates 25 are fixedly installed on the inner wall of the baking cylinder 2. The heating plates 25 serve as auxiliary heating sources to improve the temperature uniformity inside the cylinder.

[0030] A fan 26 is fixedly installed on one side of the interior of the heating box 5. A filter screen 27 is provided at the output end of the fan 26, and the filter screen 27 is slidably and detachably connected to the interior of the heating box 5. A heating wire 28 is provided on one side of the filter screen 27. A connecting pipe 29 is provided on the outside of the heating box 5, and one end of the connecting pipe 29 is connected to the annular pipe 23. A door 31 is rotatably connected to the outside of the baking cylinder 2 via a hinge. A feed inlet is fixedly connected to one side of the top of the baking cylinder 2. The air output by the fan 26 is heated by the heating wire 28 and enters the connecting pipe 29 and is sprayed into the baking cylinder 2 through the nozzle 24 to form a hot air delivery channel.

[0031] Working Principle: In operation, first rotate to open the sealing cap at the top of the feed inlet, then feed the tea leaves to be roasted into the roasting cylinder 2 through the feed inlet. After closing the sealing cap, start the equipment. First, start the servo motor 20. Through the meshing of the spur gear 21 and the ring rack 22, the entire roasting cylinder 2 slowly rotates around its central axis, causing the tea leaves to initially tumble inside the cylinder. Simultaneously, start the fan 26 and heating wire 28 inside the heating chamber 5. Air filtered through the removable filter screen 27 is heated into clean hot air by the heating wire 28, then sent through the connecting pipe 29 into the ring pipe 23, and evenly sprayed into the interior of the roasting cylinder 2 through multiple nozzles 24. The heating plates 25 on the inner wall work synchronously, further improving the temperature uniformity inside the cylinder. Simultaneously, the geared motor 16 outside the protective box 4 is started, and its output end drives the bevel gear 17 to rotate, which in turn drives the upper helical gear 18 and the lower helical gear 19 to rotate in opposite directions. The upper helical gear 18 drives the rotating rod 15 and the threaded rod 8 to rotate, causing the threaded seat 9 to move axially along the limiting cylinder 7; the lower helical gear 19 drives the rotating disk 14 and the limiting cylinder 7 to rotate as a whole. Since the threaded seat 9 is connected to the rotating rod 11 through the connecting rod 10, and the rotating rod 11 is limited by the guidance of the sliding frame 13, the spiral blade 12 ultimately achieves a compound action of rotating and reciprocating up and down inside the cylinder, deeply stirring the tea leaves and avoiding accumulation, scorching, or uneven roasting. During the roasting process, the rotating seat 6 rotates synchronously with the limiting cylinder 7, and its outer scraper 30 rotates close to the inner bottom surface of the roasting cylinder 2 to remove adhering materials in time and prevent scorching. Water vapor and excess moisture can be discharged through the exhaust holes reserved on the top side wall of the roasting cylinder 2. After roasting is completed, the heating and motor are stopped, and the finished tea leaves can be taken out by opening the box door 31. The entire process achieves integrated roasting with uniform hot air supply, deep tea leaf turning, automatic bottom cleaning, and precise temperature control, significantly improving the purity of tea aroma and the uniformity of drying.

[0032] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tea rotary roasting device, comprising a housing (1), characterized in that, The baking cylinder (2) is rotatably connected inside the box (1). A top cover (3) is provided on the top of the baking cylinder (2). A protective box (4) is fixedly installed at the center of the top of the top cover (3). A heating box (5) is fixedly installed on one side of the top of the top cover (3). A rotating seat (6) is rotatably connected to the center of the bottom of the inside of the baking cylinder (2). A limiting cylinder (7) is fixedly connected to the upper end of the rotating seat (6). A threaded rod (8) is rotatably connected inside the limiting cylinder (7). A threaded seat (9) is threadedly connected to the outer circumference of the threaded rod (8). A connecting rod (10) is fixedly connected to both sides of the threaded seat (9).

2. The tea rotary roasting apparatus according to claim 1, characterized in that, The outer ends of the two connecting rods (10) are fixedly connected to rotating rods (11), and the outer periphery of the rotating rods (11) is fixedly connected to helical blades (12). The tops of the two connecting rods (10) are fixedly connected to sliding frames (13), and the sliding frames (13) are slidably connected to the inside of the limiting cylinder (7).

3. The tea rotary roasting apparatus according to claim 1, characterized in that, The top of the limiting cylinder (7) is fixedly connected to the rotating disk (14) through the top cover (3), the top of the threaded rod (8) is fixedly connected to the rotating rod (15), and the outer sides of the rotating seat (6) are all fixedly connected to the scraper (30), and the scraper (30) is in contact with the lower end of the inside of the baking cylinder (2).

4. The tea rotary roasting apparatus according to claim 1, characterized in that, A geared motor (16) is fixedly installed on the outside of the protective box (4). The output end of the geared motor (16) is connected to a bevel gear (17) via a coupling. An upper helical gear (18) is meshed on the outer side of the upper end of the bevel gear (17), and the center end of the upper helical gear (18) is fixedly connected to the rotating rod (15). A lower helical gear (19) is meshed on the outer side of the lower end of the bevel gear (17), and the center end of the lower helical gear (19) is fixedly connected to the rotating disk (14).

5. The tea rotary roasting apparatus according to claim 1, characterized in that, A servo motor (20) is fixedly installed on the top outer side of the box (1). The output end of the servo motor (20) is connected to a spur gear (21) via a coupling. An annular rack (22) is fixedly connected to the upper outer periphery of the baking cylinder (2), and the spur gear (21) meshes with the annular rack (22).

6. The tea rotary roasting apparatus according to claim 1, characterized in that, An annular tube (23) is fixedly connected to the outer side of the upper end of the baking cylinder (2). Several nozzles (24) are fixedly connected at equal intervals to the inner side of the annular tube (23), and the nozzles (24) extend to the inner side of the baking cylinder (2). Several heating plates (25) are fixedly installed on the inner wall of the baking cylinder (2).

7. The tea rotary roasting apparatus according to claim 1, characterized in that, A fan (26) is fixedly installed on one side of the interior of the heating box (5). A filter screen (27) is provided at the output end of the fan (26), and the filter screen (27) is slidably and detachably connected to the interior of the heating box (5). A heating wire (28) is provided on one side of the filter screen (27). A connecting pipe (29) is provided on the outside of the heating box (5), and one end of the connecting pipe (29) is connected to an annular pipe (23). A door (31) is rotatably connected to the outside of the baking cylinder (2) through a hinge.

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