A fixation device for tea processing

Abstract

This utility model belongs to the field of tea processing technology, specifically disclosing a fixation device for tea processing, including a device platform. A platform shaft is fixedly inserted through the inner side of the device platform, and a support frame is rotatably connected to the outer surface of the platform shaft. A processing cylinder is fixedly installed on the support frame, and a stirring shaft is rotatably connected to the inner surface of the processing cylinder through a drive mechanism. A stirring rack is provided at the top of the stirring shaft, and a periodic linkage swing mechanism is provided below the processing cylinder. In this fixation device for tea processing, the hot air blower, through the periodic swing of the rotating shaft frame, causes the hot airflow to cover the entire area of ​​the processing cylinder in a "scanning" manner. This mechanism of "heat source movement - intermittent heating of fresh leaves," combined with the stirring rack's stirring of the tea leaves and the adjustment of the processing cylinder's tilt angle, ensures that all fresh tea leaves can complete the fixation uniformly within a relatively safe temperature range.

Description

Technical Field

[0001] This application relates to the field of tea processing technology, specifically to a fixation device for tea processing. Background Technology

[0002] The fixation device used in tea processing is a key step in the initial processing of tea—fixation. Its core function is to quickly destroy the activity of enzymes in fresh leaves through high-temperature treatment, prevent the tea from oxidizing and fermenting, and at the same time evaporate some moisture and soften the leaves.

[0003] A common method for fixing tea leaves is to continuously inject hot steam into the processing cylinder using a hot air blower. During this process, the high-temperature airflow and the conduction heating of the cylinder wall allow the fresh leaves to complete the fixing process while being heated and stirred. However, this hot airflow is concentrated in a fixed area when injected into the processing cylinder, which can easily lead to excessively high local temperatures of the fresh leaves, resulting in scorched leaves or bursting spots. Meanwhile, areas far from the air inlet are not heated enough, resulting in uneven fixing. Utility Model Content

[0004] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and to propose a fixation device for tea processing, so as to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides a tea processing and fixing device, including a platform, a platform shaft fixedly passing through the inner side of the platform, a support frame rotatably connected to the outer surface of the platform shaft, a processing cylinder fixedly mounted on the support frame, a stirring shaft rotatably connected to the inner surface of the processing cylinder via a drive mechanism, a stirring frame at the top of the stirring shaft, an electric push mechanism for adjusting the inclination of the processing cylinder on the platform, a fixed rod fixedly connected to the support frame, a rotating shaft frame rotatably connected to the top of the fixed rod, a hot air blower at the top of the rotating shaft frame, and a periodic linkage swing mechanism below the processing cylinder.

[0006] Preferably, the driving mechanism includes a motor fixedly mounted on the support frame, and the output end of the motor is fixedly connected to a drive wheel. The driving mechanism can drive the stirring shaft to rotate, thereby linking the stirring frame to stir the tea leaves inside the processing cylinder.

[0007] Preferably, a conveyor belt is slidably connected to the outer surface of the drive wheel, and a transmission wheel is fixedly sleeved on the outer surface of the stirring shaft. The outer surface of the transmission wheel is slidably connected to the inner side of the conveyor belt away from the drive wheel.

[0008] Preferably, the electric push mechanism includes a bottom shaft fixedly inserted inside the device table, an electric push rod rotatably connected to the outer surface of the bottom shaft, and a top shaft fixedly inserted inside the support frame, the outer surface of the top shaft rotatably connected to the output end of the electric push rod. The electric push mechanism can push and pull the support frame, causing it to rotate at a certain angle along the table axis, during which the deflection of the processing table changes synchronously.

[0009] Preferably, the periodic linkage swing mechanism includes a rotary plate fixedly connected to the bottom end of the stirring shaft. The end of the rotary plate away from the stirring shaft is rotatably connected to a drive linkage frame. The position of the hot air blower can be adjusted by the periodic linkage swing mechanism so that it always swings periodically at the top of the processing cylinder, so as to provide intermittent and comprehensive air supply to the processing cylinder.

[0010] Preferably, a rotating arm is rotatably connected to the outer surface of the fixed rod, one end of the rotating arm is rotatably connected to the end of the drive position linkage away from the rotating plate, and a double row of clamping rods is provided at the top of the rotating arm away from the drive position linkage.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The withering device used in this tea processing uses a hot air blower that periodically swings a rotating shaft frame to cover the entire processing cylinder with hot air in a "scanning" manner. This mechanism of "heat source movement - intermittent heating of fresh leaves", combined with the stirring rack to tumble the tea leaves and the adjustment of the tilt angle of the processing cylinder, ensures that all fresh tea leaves can be uniformly withered within a relatively safe temperature range.

[0013] 2. The withering device used in this tea processing can actively control the accumulation shape of fresh leaves by changing the tilt angle of the processing cylinder. When the tilt angle increases, the fresh leaves slide down the cylinder wall quickly, forming a thin layer. At this time, the hot airflow can easily penetrate the fresh leaf layer, which is suitable for withering tender or thin leaves. When the tilt angle decreases, the fresh leaves accumulate and thicken, forming a "heat buffer layer", which can prevent old or thick leaves from scorching due to excessive heat transfer. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this application;

[0015] Figure 2 This is a schematic diagram of the device from another perspective;

[0016] Figure 3 This is a schematic diagram of the rear structure of the support frame in this application;

[0017] Figure 4 This is a schematic diagram of the upper surface structure of the support frame in this application;

[0018] Figure 5 This is a schematic diagram of the bottom structure of the stirring shaft in this application;

[0019] Figure 6 This is a schematic diagram of the cross-sectional structure of the machining cylinder in this application.

[0020] The components include: 1. Device platform; 2. Platform shaft; 3. Support frame; 4. Processing cylinder; 5. Motor; 6. Drive wheel; 7. Conveyor belt; 8. Transmission wheel; 9. Stirring shaft; 10. Stirring rack; 11. Bottom shaft; 12. Electric push rod; 13. Top shaft; 14. Rotary plate; 15. Drive position connecting rod frame; 16. Fixed rod; 17. Rotary arm; 18. Double row clamping rod; 19. Rotary shaft frame; 20. Hot air blower. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] Please see Figure 1-6 A tea processing and fixing device includes a platform 1, a platform shaft 2 fixedly inserted through the inner side of the platform 1, a support frame 3 rotatably connected to the outer surface of the platform shaft 2, a processing cylinder 4 fixedly mounted on the support frame 3, a stirring shaft 9 rotatably connected to the inner surface of the processing cylinder 4 via a drive mechanism, a stirring rack 10 provided on the top of the stirring shaft 9, an electric push mechanism for adjusting the inclination of the processing cylinder 4 provided on the platform 1, a fixing rod 16 fixedly connected to the support frame 3, a rotating shaft frame 19 rotatably connected to the top of the fixing rod 16, the rotating shaft frame 19 is composed of rectangular strips at both ends and a columnar rod in the middle, and double-row clamping rods 18 slidably clamp the rectangular strips at the bottom of the rotating shaft frame 19, a hot air fan 20 provided at the top of the rotating shaft frame 19, the air outlet of the hot air fan 20 being at the bottom, which delivers hot steam to the processing cylinder 4 from the top, and a periodic linkage swing mechanism provided below the processing cylinder 4.

[0023] Through the above technical solution, in the process of fixing tea leaves, the device first puts an appropriate amount of tea leaves into the processing cylinder 4. The driving mechanism can drive the stirring shaft 9 to rotate, which in turn links the stirring frame 10 to stir the tea leaves. During this period, the hot air blower 20 will deliver hot air (i.e. hot steam) from top to bottom into the processing cylinder 4. The tea leaves are heated and fixed during the stirring process. During the rotation of the stirring shaft 9, the periodic linkage swing mechanism will be triggered simultaneously, so that the hot air blower 20 swings back and forth periodically above the processing cylinder 4 to change the air supply position.

[0024] Specifically, the drive mechanism includes a motor 5 fixedly mounted on the support frame 3, and a drive wheel 6 is fixedly connected to the output end of the motor 5.

[0025] Through the above technical solution, the transmission system consisting of drive wheel 6, conveyor belt 7, and transmission wheel 8 has a transmission wrap angle greater than 120 degrees. This is to allow drive wheel 6 to smoothly pass through conveyor belt 7 and drive transmission wheel 8 to rotate during rotation.

[0026] Specifically, a conveyor belt 7 is slidably connected to the outer surface of the drive wheel 6, and a transmission wheel 8 is fixedly sleeved on the outer surface of the stirring shaft 9. The outer surface of the transmission wheel 8 is slidably connected to the inner side of the conveyor belt 7 away from the drive wheel 6.

[0027] Through the above technical solution, the drive wheel 6, the conveyor belt 7 and the transmission wheel 8 cooperate with each other to convert the rotation of the output end of the processing motor 5 into the rotation of the stirring shaft 9.

[0028] Specifically, the electric propulsion mechanism includes a bottom shaft 11 fixedly inserted inside the device platform 1, an electric push rod 12 rotatably connected to the outer surface of the bottom shaft 11, and a top shaft 13 fixedly inserted inside the support frame 3, with the outer surface of the top shaft 13 rotatably connected to the output end of the electric push rod 12.

[0029] Through the above technical solution, the bottom shaft 11 is designed to cooperate with the electric actuator 12. Because the output end of the electric actuator 12 will also deflect at an angle during the process of pushing and pulling the support frame 3 through the top shaft 13, and at the same time, the output end of the electric actuator 12 will rotate with the top shaft 13.

[0030] Specifically, the periodic linkage swing mechanism includes a rotary plate 14 fixedly connected to the bottom end of the stirring shaft 9, and a drive linkage frame 15 rotatably connected to the end of the rotary plate 14 away from the stirring shaft 9.

[0031] Through the above technical solution, the stirring shaft 9 will not only drive the upper stirring frame 10 to rotate during the rotation process (to stir the tea in the processing cylinder 4), but will also drive the bottom rotating plate 14 to make synchronous circular motion (with the stirring shaft 9 as the center).

[0032] Specifically, a rotating arm 17 is rotatably connected to the outer surface of the fixed rod 16. One end of the rotating arm 17 is rotatably connected to the end of the drive position linkage frame 15 away from the rotating plate 14. A double row of clamping rods 18 is provided at the top of the rotating arm 17 away from the drive position linkage frame 15.

[0033] Through the above technical solution, when the rotary plate 14 is making a circular motion with the stirring shaft 9 as the center, it will drive the drive position linkage 15 to deflect. During the deflection process, the two ends of the drive position linkage 15 will rotate with the rotary plate 14 and the rotary arm 17 respectively.

[0034] Working Principle: During the tea-processing process, an appropriate amount of tea leaves is first placed into the processing cylinder 4. The hot air blower 20 is then turned on, supplying hot steam to the processing cylinder 4 from top to bottom. The hot steam is conducted through the cylinder wall, resulting in a high temperature throughout the cylinder 4. Simultaneously, the motor 5 is activated, driving the drive wheel 6 to rotate. Combined with the transmission effect of the conveyor belt 7, this causes the drive wheel 8 to rotate, ultimately driving the stirring shaft 9 to rotate. During rotation, the stirring shaft 9 drives the stirring frame 10, causing it to rotate within the processing cylinder 4. The tea leaves inside the processing cylinder 4 are stirred. During the stirring process, hot steam and the cylinder wall transfer heat to the tea leaves, thus preventing oxidation and fermentation while evaporating moisture (i.e., performing the fixation process). Simultaneously, as the stirring shaft 9 rotates, the rotating plate 14 at the bottom of the stirring shaft 9 rotates in a circular motion (with the stirring shaft 9 as the center). During this process, the other end of the rotating plate 14 drives the drive linkage 15 to deflect. As the drive linkage 15 deflects, its other end acts on the rotating arm 17, causing the rotating arm 17 to rotate back and forth along the fixed rod 16 at a certain angle. The double-row clamping rods 18 on the rotating arm 17 clamp and hold the rectangular strip at the bottom of the rotating shaft frame 19, thereby driving the rotating shaft frame 19 to rotate back and forth synchronously on the top of the fixed rod 16. During this time, the hot air fan 20 on the top of the rotating shaft frame 19 has the effect of periodically and intermittently swinging back and forth on the top of the processing cylinder 4, thereby delivering air (hot airflow) to the processing cylinder 4 from above in a comprehensive and uniform manner. When the hot air fan 20 swings to the left, the fresh leaves on the left are fully heated. Then the hot air fan 20 turns to the right, and the fresh leaves on the left are temporarily removed from the heat source to avoid overheating, while the fresh leaves on the right receive heat. This reduces the chance of scorched leaves due to excessively high local temperatures. Furthermore, during the withering process in the processing cylinder 4, the electric push rod 12 can be activated, allowing the output end of the electric push rod 12 to push and pull the support frame 3 through the top shaft 13. This causes the support frame 3 to rotate at a certain angle along the platform shaft 2, meaning that the processing cylinder 4 on the support frame 3 will adjust its tilt accordingly. The adjustable tilt angle of the processing cylinder 4 can change the shape of the fresh leaves. Combined with the stirring of the stirring rack 10 and the oscillating scanning conveying of hot air, a composite heating mode of "heat convection + heat conduction" is achieved, further improving the efficiency of hot withering.

[0035] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixation device for tea processing, comprising a device platform (1), characterized in that: A platform shaft (2) is fixedly inserted through the inner side of the device platform (1). A support frame (3) is rotatably connected to the outer surface of the platform shaft (2). A processing cylinder (4) is fixedly installed on the support frame (3). A stirring shaft (9) is rotatably connected to the inner surface of the processing cylinder (4) through a drive mechanism. A stirring rack (10) is provided on the top of the stirring shaft (9). An electric push mechanism for adjusting the inclination of the processing cylinder (4) is provided on the device platform (1). A fixed rod (16) is fixedly connected to the support frame (3). A rotating shaft frame (19) is rotatably connected to the top of the fixed rod (16). A hot air blower (20) is provided at the top of the rotating shaft frame (19). A periodic linkage swing mechanism is provided below the processing cylinder (4).

2. The tea processing and fixing device according to claim 1, characterized in that: The drive mechanism includes a motor (5) fixedly mounted on the support frame (3), and the output end of the motor (5) is fixedly connected to a drive wheel (6).

3. The fixation device for tea processing according to claim 2, characterized in that: The outer surface of the drive wheel (6) is slidably connected to the conveyor belt (7), and the outer surface of the stirring shaft (9) is fixedly fitted with a transmission wheel (8). The outer surface of the transmission wheel (8) is slidably connected to the inner side of the conveyor belt (7) away from the drive wheel (6).

4. The tea processing and fixing device according to claim 1, characterized in that: The electric push mechanism includes a bottom shaft (11) fixedly inserted inside the device platform (1), an electric push rod (12) rotatably connected to the outer surface of the bottom shaft (11), and a top shaft (13) fixedly inserted inside the support frame (3), the outer surface of the top shaft (13) rotatably connected to the output end of the electric push rod (12).

5. The fixation device for tea processing according to claim 1, characterized in that: The periodic linkage swing mechanism includes a rotary plate (14) fixedly connected to the bottom end of the stirring shaft (9), and a drive position linkage frame (15) is rotatably connected to the end of the rotary plate (14) away from the stirring shaft (9).

6. The fixation device for tea processing according to claim 5, characterized in that: The outer surface of the fixed rod (16) is rotatably connected to a rotating arm (17). One end of the rotating arm (17) is rotatably connected to the end of the drive position linkage frame (15) away from the rotating plate (14). The top of the rotating arm (17) away from the drive position linkage frame (15) is provided with a double row of clamping rods (18).

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