Energy-saving high-efficiency tea leaf fixation machine

Abstract

The utility model relates to an energy-saving efficient tea leaf fixation machine, and belongs to the technical field of tea leaf processing equipment. Through the design of the cavity interlayer formed by the inner shell and the outer shell of the roller and the spiral guide vanes, hot air at the tail end of the inner shell enters the cavity interlayer and spirally flows in the interlayer under the guidance of the spiral guide vanes, heat is transferred to tea leaves in the inner shell, the contact path of the hot air and the roller is prolonged, and the contact time of the hot air and the roller is prolonged. Hot air flows back through the wall face of the inner shell and the interlayer to heat tea in a bidirectional mode, heat loss is reduced, the utilization efficiency of energy is improved, through continuous rotation of the roller, the tea makes full contact with the hot air in the rolling process, it is ensured that the tea is evenly heated, and the problems that manual stir-frying is low in efficiency and large in labor intensity are solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of tea processing equipment, specifically relating to an energy-saving and efficient tea fixing machine. Background Technology

[0002] As a core step in tea processing, the fixation of tea leaves plays a crucial role in rapidly inhibiting the activity of oxidases in fresh leaves through high temperatures, thus preventing excessive oxidation of the tea leaves in subsequent processes. At the same time, it evaporates some of the moisture in the fresh leaves, shaping the tea leaves and giving them a unique aroma.

[0003] Currently, in tea processing, the common practice is to heat an iron wok with a stove, and then manually stir-fry the tea leaves to achieve the desired withering effect. However, this traditional method has the following problems: First, manual stirring is labor-intensive and inefficient. Second, during the heating process, due to the iron wok's rapid heat conduction and large opening, heat loss is significant. A large amount of heat energy is not fully utilized for withering the tea leaves but is instead dissipated into the surrounding environment, resulting in low energy efficiency. This not only increases production costs but also contradicts the trend of energy conservation and environmental protection. Utility Model Content

[0004] To overcome the problems of traditional tea fixing methods that mainly rely on heating an iron wok with a stove and manual stirring, resulting in high labor intensity, low efficiency, and significant heat loss with a large amount of heat energy not being fully utilized for tea fixing, leading to low energy utilization efficiency, this utility model provides an energy-saving and high-efficiency tea fixing machine. Through the design of a cavity sandwiched between the inner and outer shells of the drum and spiral guide vanes, hot air from the end of the inner shell enters the cavity sandwiched between the drums. Guided by the spiral guide vanes, the air flows spirally along the sandwiched section, transferring heat to the tea leaves inside the inner shell. This extends the contact path and time between the hot air and the drum. The hot air, through the inner shell wall and the heat return flow within the sandwiched section, provides bidirectional heating to the tea leaves, reducing heat loss and improving energy utilization efficiency. The continuous rotation of the drum ensures that the tea leaves are fully in contact with the hot air during the tumbling process, guaranteeing even heating and solving the problems of low efficiency and high labor intensity associated with manual stirring.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: An energy-saving and high-efficiency tea fixing machine mainly includes a frame, a drum, a drive mechanism, a feeding shell, a discharging shell, a heating box, a fan, support wheels, a serpentine heating tube, and spiral guide vanes. The drum is rotatably mounted on the frame via four sets of support wheels. A drive mechanism for rotating the drum is installed at the bottom of the frame. The feeding shell is mounted on the frame and rotatably connected to the end of the drum. A feeding hopper communicating with the inside of the drum is provided on the circumferential surface of the feeding shell. A fan is installed on the end face of the feeding shell. The machine is equipped with a heating box that is connected to its interior. Inside the heating box, a fan and a serpentine heating tube are installed from the outside to the inside. The discharge shell is installed at the other end of the frame and is rotatably connected to the end of the drum. The discharge shell has a downwardly inclined discharge port on its circumferential surface. The drum includes an inner shell and an outer shell, and an annular cavity sandwiched between the inner shell and the outer shell. Spiral guide vanes are installed in the cavity sandwiched. The cavity sandwiched at the end away from the feed shell is connected to the inside of the drum. An annular sealing plate is installed at the end of the inner shell and the outer shell. An exhaust port communicating with the cavity sandwiched is opened on the annular sealing plate.

[0006] The outer shell is fitted with a heat insulation cylinder, and a cavity sandwich is formed between the heat insulation cylinder and the outer shell. The cavity sandwich is filled with polyurethane foam for heat insulation.

[0007] Both the discharge port and the top of the feed hopper are hinged with cover plates that are locked by buckles, and the ends of the discharge port and the feed hopper are provided with grooves for inserting sealing rings.

[0008] The roller end is equipped with a conical discharge hopper that communicates with the inside of the inner shell. Guide plates are evenly installed on the inner wall of the discharge hopper along the circumferential direction, and a flow guiding cavity is formed between the outer wall of the discharge hopper and the discharge shell.

[0009] The drive mechanism includes a motor, a rotating shaft, and a gear. The rotating shaft is mounted on the frame via a bearing housing, and the gear is mounted on the rotating shaft. The motor is mounted on the frame and is connected to the rotating shaft for transmission. A gear ring that meshes with the gear is mounted on the outer wall of the heat insulation cylinder.

[0010] The inner wall of the inner shell is uniformly provided with V-shaped turning plates along the circumferential and axial directions.

[0011] The beneficial effects of this utility model are:

[0012] This invention utilizes a cavity sandwiched between the inner and outer shells of the drum and a spiral guide vane design. Hot air from the end of the inner shell enters the cavity sandwiched between the inner and outer shells, and guided by the spiral guide vanes, flows spirally within the sandwiched layer, transferring heat to the tea leaves inside the inner shell. This extends the contact path and time between the hot air and the drum. The hot air, through the inner shell wall and the heat return from the sandwiched layer, provides bidirectional heating to the tea leaves, reducing heat loss and improving energy efficiency. The continuous rotation of the drum ensures that the tea leaves are fully in contact with the hot air during the tumbling process, guaranteeing even heating and solving the problems of low efficiency and high labor intensity associated with manual stir-frying. Attached Figure Description

[0013] Figure 1 This is the isometric drawing of this utility model.

[0014] Figure 2 This is a three-dimensional schematic diagram of the present invention.

[0015] Figure 3 This is a three-dimensional cross-sectional view of the present invention.

[0016] Figure 4 This is a three-dimensional schematic diagram of the internal structure of this utility model.

[0017] Figure 5 This is a three-dimensional cross-sectional view of the drum. Detailed Implementation

[0018] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0019] This utility model discloses an energy-saving and efficient tea fixing machine. The energy-saving and efficient tea fixing machine mainly includes a frame 1, a drum 2, a drive mechanism 3, a feeding shell 4, a discharging shell 5, a heating box 6, a fan 7, support wheels 8, a serpentine heating tube 9, and spiral guide vanes 10. The drum 2 is rotatably mounted on the frame 1 via four sets of support wheels 8. A drive mechanism 3 for driving the drum 2 to rotate is installed at the bottom of the frame 1. The drive mechanism 3 includes a motor 301, a rotating shaft 302, and a gear 303. The rotating shaft 302 is mounted on the frame 1 via a bearing seat, and the gear 303 is mounted on the rotating shaft 302. The motor 301 is mounted on the frame 1 and is connected to the rotating shaft 302 for transmission. A gear ring 205 that meshes with the gear 303 is installed on the outer wall of the heat insulation cylinder 203. The feeding shell 4 is mounted on the frame 1 and... The feed hopper 401, which communicates with the inside of the drum 2, is provided on the circumferential surface of the feed shell 4 and is rotatably connected to the end of the drum 2. A heating box 6, which communicates with the inside of the feed shell 4, is installed on the end face of the feed shell 4. A fan 7 and a serpentine heating tube 9 are installed inside the heating box 6 from the outside to the inside. The discharge shell 5 is installed at the other end of the frame 1 and is rotatably connected to the end of the drum 2. A downwardly inclined discharge port 501 is provided on the circumferential surface of the discharge shell 5. The drum 2 includes an inner shell 201 and an outer shell 202. An annular cavity sandwich is formed between the inner shell 201 and the outer shell 202. A spiral guide vane 10 is provided in the cavity sandwich. The cavity sandwich at the end away from the feed shell 4 communicates with the inside of the drum 2. An annular sealing plate 206 is provided at the end of the inner shell 201 and the outer shell 202. An exhaust port 2061, which communicates with the cavity sandwich, is opened on the annular sealing plate 206.

[0020] In use, the motor 301 of the drive mechanism 3 is started. The motor 301 drives the gear 303 to rotate via the shaft 302. The gear 303 meshes with the gear ring 205 on the outer wall of the drum 2, thereby driving the drum 2 to rotate stably on the four sets of support wheels 8. The serpentine heating tube 9 in the heating box 6 generates high temperature when energized. The fan 7 sends hot air along the feed shell 4 into the inner shell 201 of the drum 2. The hot air first comes into direct contact with the tea leaves in the inner shell 201 for initial heat exchange. Subsequently, the hot air enters the cavity between the inner shell 201 and the outer shell 202 from the end of the drum 2. Guided by the spiral guide vanes 10, the hot air spirals back along the cavity, forming a closed loop path. During this process, the hot air continuously transfers heat to the tea leaves through the wall of the inner shell 201, while the spiral path prolongs the residence time of the hot air, reducing heat loss. As the drum 2 rotates, the tea leaves are repeatedly tumbled in the inner shell 201 under the action of centrifugal force, making full contact with the hot air and ensuring that the tea leaves are heated evenly. The hot and humid gas generated during the fixation process circulates with the hot air in the jacket and is discharged through the exhaust port 2061 of the annular sealing plate 206. The tea leaves that have completed fixation are moved to the end of the discharge shell 5 as the drum 2 rotates and are discharged through the discharge port 501.

[0021] The outer shell 202 is fitted with a heat insulation cylinder 203, and a cavity sandwich is formed between the heat insulation cylinder 203 and the outer shell 202. The cavity sandwich is filled with polyurethane foam for heat insulation. The polyurethane foam has good heat insulation performance and can effectively prevent the heat inside the drum 2 from being conducted to the outside through the outer shell 202. This allows more of the heat generated during the fixing process to be retained inside the drum 2 for the fixing of tea leaves, thereby improving energy utilization efficiency and reducing energy consumption and production costs.

[0022] Both the discharge port 501 and the top of the feed hopper 401 are hinged with cover plates 502 that are locked by buckles. The ends of the discharge port 501 and the feed hopper 401 are provided with grooves for embedding sealing rings. The cover plates 502 can reduce heat dissipation at the discharge port 501 and the feed hopper 401 during the fixation process, so that more heat is retained inside the drum 2, reducing energy consumption, and at the same time helping to maintain the fixation temperature and improve the quality of tea fixation.

[0023] The roller 2 is equipped with a conical discharge hopper 11 that communicates with the interior of the inner shell 201. Guide plates 1101 are evenly installed on the inner wall of the discharge hopper 11 along the circumferential direction. A flow guiding cavity is formed between the outer wall of the discharge hopper 11 and the discharge shell 5. The tea leaves are guided to the discharge port 501 of the discharge shell 5 through the guide plates 1101 and discharged. The discharge hopper 11 can guide the hot air in the discharge shell 5 to the cavity interlayer.

[0024] The inner shell 201 has V-shaped turning plates 204 evenly arranged on the inner wall along the circumferential and axial directions. When the drum 2 rotates, the turning plates 204 can make the tea leaves continuously tumble in the circumferential direction, increasing the contact area and contact frequency between the tea leaves and the hot air and the inner wall of the inner shell 201, so that the tea leaves are heated evenly, thereby ensuring the fixation effect of the tea leaves.

[0025] Work process:

[0026] In use, the motor 301 of the drive mechanism 3 is started. The motor 301 drives the gear 303 to rotate via the shaft 302. The gear 303 meshes with the gear ring 205 on the outer wall of the drum 2, thereby driving the drum 2 to rotate stably on the four sets of support wheels 8. The serpentine heating tube 9 in the heating box 6 generates high temperature when energized. The fan 7 sends hot air along the feed shell 4 into the inner shell 201 of the drum 2. The hot air first comes into direct contact with the tea leaves in the inner shell 201 for initial heat exchange. Subsequently, the hot air enters the cavity between the inner shell 201 and the outer shell 202 from the end of the drum 2. Guided by the spiral guide vanes 10, the hot air spirals back along the cavity, forming a closed loop path. During this process, the hot air continuously transfers heat to the tea leaves through the wall of the inner shell 201, while the spiral path prolongs the residence time of the hot air, reducing heat loss. As the drum 2 rotates, the tea leaves are repeatedly tumbled in the inner shell 201 under the action of centrifugal force, making full contact with the hot air and ensuring that the tea leaves are heated evenly. The hot and humid gas generated during the fixation process circulates with the hot air in the jacket and is discharged through the exhaust port 2061 of the annular sealing plate 206. The tea leaves that have completed fixation are moved to the end of the discharge shell 5 as the drum 2 rotates and are discharged through the discharge port 501.

[0027] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. An energy-saving and efficient tea fixing machine, characterized in that: The energy-saving and high-efficiency tea fixing machine includes a frame (1), a drum (2), a drive mechanism (3), a feed shell (4), a discharge shell (5), a heating box (6), a fan (7), support wheels (8), a serpentine heating tube (9), and spiral guide vanes (10). The drum (2) is rotatably mounted on the frame (1) by four sets of support wheels (8). The bottom end of the frame (1) is equipped with a drive mechanism (3) for driving the drum (2) to rotate. The feed shell (4) is mounted on the frame (1) and rotatably connected to the end of the drum (2). A feed hopper (401) communicating with the inside of the drum (2) is provided on the circumferential surface of the feed shell (4). A heating box (6) communicating with the inside of the feed shell (4) is installed on the end face of the feed shell (4). A fan (7) and a serpentine heating tube (9) are installed from the outside to the inside inside. The discharge shell (5) is installed at the other end of the frame (1) and is rotatably connected to the end of the drum (2). The discharge shell (5) has a downwardly inclined discharge port (501) on its circumferential surface. The drum (2) includes an inner shell (201) and an outer shell (202). An annular cavity sandwich is formed between the inner shell (201) and the outer shell (202). A spiral guide vane (10) is provided in the cavity sandwich. The cavity sandwich at the end away from the feed shell (4) is connected to the inside of the drum (2). An annular sealing plate (206) is provided at the end of the inner shell (201) and the outer shell (202). An exhaust port (2061) connected to the cavity sandwich is opened on the annular sealing plate (206).

2. The energy-saving and high-efficiency tea fixing machine as described in claim 1, characterized in that: The outer shell (202) is fitted with a heat insulation cylinder (203), and a cavity interlayer is formed between the heat insulation cylinder (203) and the outer shell (202), and the cavity interlayer is filled with polyurethane foam for heat insulation.

3. The energy-saving and high-efficiency tea fixing machine as described in claim 1 or 2, characterized in that: The discharge port (501) and the top of the feed hopper (401) are both hinged with cover plates (502) that are locked by buckles. The ends of the discharge port (501) and the feed hopper (401) are both provided with grooves for embedding sealing rings.

4. The energy-saving and high-efficiency tea fixing machine as described in claim 3, characterized in that: The roller (2) is equipped with a conical discharge hopper (11) that communicates with the interior of the inner shell (201). A guide plate (1101) is evenly installed on the inner wall of the discharge hopper (11) along the circumferential direction. A flow guide cavity is formed between the outer wall of the discharge hopper (11) and the discharge shell (5).

5. The energy-saving and high-efficiency tea fixing machine as described in claim 2, characterized in that: The drive mechanism (3) includes a motor (301), a rotating shaft (302), and a gear (303). The rotating shaft (302) is mounted on the frame (1) through a bearing seat. The gear (303) is mounted on the rotating shaft (302). The motor (301) is mounted on the frame (1) and is connected to the rotating shaft (302) for transmission. A gear ring (205) that meshes with the gear (303) is mounted on the outer wall of the heat insulation cylinder (203).

6. An energy-saving and efficient tea fixing machine as described in claim 1 or 4, characterized in that: The inner shell (201) has V-shaped turning plates (204) evenly arranged on the inner wall along the circumferential and axial directions.

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