Uniform airflow type drying cylinder for tea processing and processing method

Abstract

The invention discloses an airflow uniform type drying cylinder for tea processing and a processing method, and belongs to the technical field of tea processing. The airflow uniform type drying cylinder comprises a shell, a roller is rotationally installed in the shell, a dehumidifying fan is installed at one end of the shell, and an air supply pipe is installed on one side of the shell in a penetrating mode; the end of the air supply pipe penetrates into the shell, one end of the air supply pipe is fixedly provided with an annular pipe, the annular pipe is arranged on the outer side of the roller in a sleeving mode, the outer side of the annular pipe is evenly sleeved with flow dividing pipes, one side of each flow dividing pipe is provided with an air supply nozzle, and the air supply nozzles communicate with the flow dividing pipes. After hot air enters the annular pipe through the air supply pipe, a uniform and ordered flowing path is formed through the cooperative flow dividing effect of the flow dividing pipe and the air supply nozzle, hot air is promoted to completely cover all the surfaces of the outer side of the roller, the distribution uniformity of the hot air is improved, the heating area of the roller is enlarged, and uniform heating of tea leaves is promoted; the phenomenon of local over-drying or insufficient drying is reduced, so that the drying efficiency and the quality of tea finished products are improved.

Description

Technical Field

[0001] This invention relates to a tea drying cylinder, and more particularly to a uniform airflow drying cylinder and processing method for tea processing, belonging to the field of tea processing technology. Background Technology

[0002] In tea processing, drying is a crucial step in ensuring quality. A stable thermal environment is needed to achieve uniform moisture removal from the tea leaves, thereby improving flavor and storage stability. Existing tea drying cylinders are widely used in large-scale production. They complete the drying process through full contact between hot airflow and the tea leaves, adapting to the processing needs of different tea varieties. Their main structural components include a hot air blower, drum, outer shell, and dehumidifier. They can also be combined with feeding devices, temperature control modules, and material guiding structures to achieve continuous and efficient tea drying.

[0003] Existing technologies still have shortcomings:

[0004] The existing hot air conveying links in the drying cylinders used for tea processing generally suffer from problems such as fixed air supply positions and simple airflow distribution structures. Hot air is concentrated in some areas on the outside of the cylinder, while the airflow penetration in the central area of ​​the cylinder and inside the tea stack is insufficient, resulting in uneven drying of the tea.

[0005] To address these issues, a uniform airflow drying cylinder and processing method for tea processing were designed. Summary of the Invention

[0006] The main objective of this invention is to provide a uniform airflow drying cylinder and processing method for tea processing, in order to solve the problems mentioned in the background art.

[0007] The objective of this invention can be achieved by adopting the following technical solution:

[0008] A uniform airflow drying cylinder for tea processing and a processing method thereof, comprising a shell, a roller rotatably mounted inside the shell, a dehumidifying fan mounted at one end of the shell, and an air supply pipe installed through one side of the shell;

[0009] The end of the air supply pipe extends into the interior of the housing. One end of the air supply pipe is fixedly installed with an annular pipe, which is sleeved on the outside of the roller. Diverter pipes are evenly sleeved on the outside of the annular pipe. Air nozzles are installed on one side of each diverter pipe, and the air nozzles are connected to the diverter pipes. A conveying mechanism is provided between the diverter pipes, the roller, and the housing.

[0010] Preferably, the conveying mechanism includes a chute, a toothed ring, a pushing ring, and toothed blocks. The chute is radially and evenly opened along the inner wall of the housing. A slider is slidably connected inside the chute. The toothed ring is located inside the housing, and its outer side is fixedly connected to the slider. A retaining ring 1 and a retaining ring 2 are respectively installed on both sides of the toothed ring. An arc-shaped block is evenly fixed on the side of retaining ring 1 away from retaining ring 2. A slide rod is fixed on the side of retaining ring 2 away from retaining ring 1. A limiting ring is movably sleeved on the outer side of the slide rod, and the limiting ring is fixedly connected to the inner wall of the housing. A spring is movably sleeved on the outer side of the slide rod, and both ends of the spring are fixedly connected to one end of the slide rod and one side of the limiting ring, respectively. The pushing ring is fixedly sleeved on the outer side of the roller. A protrusion is fixed on the side of the pushing ring near retaining ring 1, and the protrusion is slidably connected to the arc-shaped block. The toothed blocks are evenly fixed on the outer side of the diverter pipe, and the toothed blocks mesh with the toothed ring.

[0011] Preferably, a connecting ring is provided at the connection between the annular pipe and the branch pipe, and the outer side of the connecting ring matches the shape of the inner sidewall of the branch pipe.

[0012] Preferably, the air nozzle is a trumpet-shaped air nozzle, and the air nozzle is inclined and set on the outside of the split pipe.

[0013] Preferably, the bump is a hemispherical protrusion structure, and a wear-resistant layer is provided on the outer side of the bump.

[0014] Preferably, a dustproof bellows is fitted on the outer side of the spring, and the two ends of the bellows are sealed to the slide rod and the limiting ring, respectively.

[0015] Preferably, a protective net is installed at the end of the housing near the dehumidifier, and the protective net is detachably connected to the end of the housing by bolts.

[0016] A method for processing tea using a uniform airflow drying cylinder includes the following steps:

[0017] Step 1: As the roller rotates, it drives the outer push ring to rotate, which in turn drives the protrusion to rotate. When the protrusion rotates, it will intermittently contact the arc-shaped block, and then drive the retaining ring and toothed ring on one side of the arc-shaped block to move by pushing the arc-shaped block.

[0018] Step 2: With the sliding engagement of the slider and the groove on the outside of the toothed ring, the toothed ring slides horizontally towards the limiting ring along the inside of the groove, and the toothed ring pushes the second retaining ring and the slide rod to move in the same direction;

[0019] Step 3: The second retaining ring compresses the spring towards the limiting ring, causing it to deform. When the protrusion rotates to the point where it no longer contacts the arc-shaped block, the spring force will push the second retaining ring, the toothed ring, and the first retaining ring back to their original positions.

[0020] Step 4: While the toothed ring slides back and forth, the meshing tooth blocks drive the diversion pipe to rotate, which in turn drives the air nozzles on the outside of the diversion pipe to rotate, conveying the hot air delivered by the air nozzles to the radial direction of the roller.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This invention, through the combined use of a shell, drum, dehumidifier, air supply pipe, annular pipe, diverter pipe, and air nozzle, enables hot air to enter the annular pipe through the air supply pipe. The diverter pipe and air nozzle work together to create a uniform and orderly flow path, ensuring that hot air fully covers all surfaces of the drum. This improves the uniformity of hot air distribution, expands the heating area of ​​the drum, promotes even heating of the tea leaves, reduces localized over-drying or under-drying, and ultimately improves drying efficiency and the quality of the finished tea product.

[0023] 2. This invention, through the coordinated use of a sliding groove, a slider, a toothed ring, a first retaining ring, an arc-shaped block, a pushing ring, a protrusion, a second retaining ring, a sliding rod, a limiting ring, a spring, and a toothed block, enables the diversion pipe and the outer air nozzle to reciprocate through the rotation of the drum and the linkage of the pushing ring and the protrusion, allowing hot air to be uniformly delivered radially along the drum. No additional power drive is required, making it more energy-efficient and environmentally friendly. It improves drying uniformity while optimizing energy utilization efficiency. Attached Figure Description

[0024] Figure 1 This is a front sectional view of the present invention;

[0025] Figure 2 This is a cross-sectional view of the annular tube of the present invention;

[0026] Figure 3 For the present invention Figure 1 Enlarged view of the structure at point A in the middle;

[0027] Figure 4 This is a schematic diagram of the structure of the retaining ring and the pushing ring of the present invention;

[0028] Figure 5 This is the front view of the present invention.

[0029] In the diagram: 1. Housing; 2. Drum; 3. Dehumidifier; 4. Air supply duct; 5. Circular duct; 6. Diverter duct; 7. Air nozzle;

[0030] 8. Conveying mechanism; 801. Slide groove; 802. Slider; 803. Gear ring; 804. Retaining ring one; 805. Arc block; 806. Push ring; 807. Protrusion; 808. Retaining ring two; 809. Slide rod; 810. Limiting ring; 811. Spring; 812. Gear block. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the embodiments of the present invention can be combined with each other.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention 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, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Example 1

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this embodiment proposes a uniform airflow drying cylinder and processing method for tea processing, including a shell 1, a roller 2 rotatably installed inside the shell 1, a dehumidifying fan 3 installed at one end of the shell 1, and an air supply pipe 4 installed through one side of the shell 1.

[0038] The end of the air supply pipe 4 extends into the interior of the housing 1. One end of the air supply pipe 4 is fixedly installed with an annular pipe 5, and the annular pipe 5 is sleeved on the outside of the roller 2. Diverter pipes 6 are evenly sleeved on the outside of the annular pipe 5. Air nozzles 7 are installed on one side of the diverter pipes 6, and the air nozzles 7 are connected to the diverter pipes 6. A conveying mechanism 8 is provided between the diverter pipes 6, the roller 2 and the housing 1.

[0039] Hot air is delivered to the inside of the annular pipe 5 through the air supply pipe 4 connected to the hot air blower. After entering the annular pipe 5, the hot air flows along the inside of the annular pipe 5. Due to the evenly arranged distribution pipes 6 on the outside of the annular pipe 5, the hot air enters the interior of the distribution pipes 6 while flowing and is delivered to the housing 1 through the air supply nozzles 7. The evenly arranged air supply nozzles 7 make the hot air evenly blown to different surfaces on the outside of the drum 2, increasing the heating area of ​​the drum 2 and improving the drying efficiency.

[0040] Example 2

[0041] The solution in Example 1 will be further described below with reference to its specific working method.

[0042] like Figure 1 As shown, in a preferred embodiment, based on the above method, the conveying mechanism 8 further includes a chute 801, a toothed ring 803, a pushing ring 806, and a toothed block 812. The chute 801 is radially and evenly opened along the inner sidewall of the housing 1. A slider 802 is slidably connected inside the chute 801. The toothed ring 803 is located inside the housing 1, and its outer side is fixedly connected to the slider 802. A retaining ring 1 804 and a retaining ring 2 808 are respectively installed on both sides of the toothed ring 803. An arc-shaped block 805 is evenly fixed on the side of the retaining ring 1 804 away from the retaining ring 2 808. An arc-shaped block 805 is evenly fixed on the side of the retaining ring 1 804 away from the retaining ring 2 808. A slide rod 809 is fixed on one side of ring 804. A limiting ring 810 is movably sleeved on the outer side of slide rod 809 and is fixedly connected to the inner side wall of housing 1. A spring 811 is movably sleeved on the outer side of slide rod 809 and the two ends of spring 811 are fixedly connected to one end of slide rod 809 and one side of limiting ring 810, respectively. Push ring 806 is fixedly sleeved on the outer side of roller 2. A protrusion 807 is fixed on the side of push ring 806 near stop ring 804 and is slidably connected to arc block 805. Tooth block 812 is evenly fixed on the outer side of diverter pipe 6 and meshes with tooth ring 803.

[0043] As the roller 2 rotates, it drives the outer push ring 806 to rotate, which in turn drives the protrusion 807 to rotate. During rotation, the protrusion 807 intermittently contacts the arc-shaped block 805, which in turn drives the arc-shaped block 805 to move the retaining ring 804 and the toothed ring 803 on one side of the arc-shaped block 805. With the sliding engagement of the slider 802 and the groove 801 on the outer side of the toothed ring 803, the toothed ring 803 slides horizontally towards the limiting ring 810 along the inside of the groove 801. The toothed ring 803 pushes the retaining ring 808 and the slide rod 809 to move in the same direction. The retaining ring 808 moves towards the limiting ring 810. The ring 810 compresses the spring 811, causing it to deform. When the protrusion 807 rotates to a position where it no longer contacts the arc block 805, the spring force of the spring 811 will push the second retaining ring 808, the toothed ring 803, and the first retaining ring 804 back to their original positions. While the toothed ring 803 slides back and forth, the meshing toothed block 812 drives the diversion pipe 6 to rotate, which in turn drives the air nozzle 7 on the outside of the diversion pipe 6 to rotate, delivering the hot air delivered by the air nozzle 7 to the radial direction of the drum 2, further improving the uniformity of airflow and making the tea more evenly heated. The linkage method is also more energy-efficient and environmentally friendly.

[0044] like Figure 1 and Figure 2 As shown, in a preferred embodiment, based on the above method, a connecting ring is provided at the connection between the annular pipe 5 and the diversion pipe 6, and the outer side of the connecting ring matches the shape of the inner sidewall of the diversion pipe 6.

[0045] The precise fit between the connecting ring and the inner wall of the diversion pipe 6 enhances the sealing and connection stability at the connection between the annular pipe 5 and the diversion pipe 6, preventing hot air leakage.

[0046] like Figure 1 and Figure 3 As shown, in a preferred embodiment, based on the above method, the air nozzle 7 is further a trumpet-shaped air nozzle, and the air nozzle 7 is inclinedly disposed on the outside of the diversion pipe 6.

[0047] The horn-shaped air nozzle 7, combined with the inclined installation design, can expand the coverage of hot air delivery and further improve the uniformity of contact between the hot airflow and the roller 2.

[0048] like Figure 3 and Figure 4 As shown, in a preferred embodiment, based on the above method, the protrusion 807 is further provided as a hemispherical protrusion structure, and a wear-resistant layer is provided on the outer side of the protrusion 807.

[0049] The hemispherical protrusion structure of the protrusion 807 can reduce the friction when it contacts the arc block 805, reduce component wear, and at the same time the smooth contact surface can make the pushing process smoother.

[0050] like Figure 3As shown, in a preferred embodiment, based on the above method, a dustproof bellows is further provided on the outer side of the spring 811, and the two ends of the bellows are respectively sealed and connected to the slide rod 809 and the limiting ring 810.

[0051] The dustproof corrugated pipe can effectively block tea leaves, dust and other impurities from entering the gap of spring 811, preventing spring 811 from getting stuck or corroding.

[0052] like Figure 1 and Figure 5 As shown, in a preferred embodiment, based on the above method, a protective net is further installed at one end of the housing 1 near the dehumidifier 3, and the protective net is detachably connected to the end of the housing 1 by bolts.

[0053] The removable protective netting prevents tea leaves or foreign objects from entering the dehumidifier 3, and the removable design also facilitates later cleaning and maintenance.

[0054] Example 3

[0055] The solutions in Embodiments 1 and 2 will be further described below with reference to their specific working methods.

[0056] Hot air delivered by the hot air blower enters the annular pipe 5 through the air supply pipe 4. As it flows inside the annular pipe 5, it enters the pipe through the evenly distributed diversion pipes 6 on its outer side, and is then delivered to the inside of the housing 1 through the air supply nozzles 7. The evenly distributed air supply nozzles 7 can blow hot air evenly to all sides of the outer surface of the drum 2, increasing the heating area of ​​the drum 2 and improving the drying efficiency.

[0057] When the roller 2 rotates, it drives the outer push ring 806 to rotate synchronously. The protrusion 807 on the push ring 806 rotates with it and intermittently contacts the arc block 805. The protrusion 807 pushes the arc block 805, causing the retaining ring 804 and the toothed ring 803 on one side to move. Under the sliding engagement of the slider 802 on the outer side of the toothed ring 803 and the slide groove 801, the toothed ring 803 slides horizontally along the slide groove 801 towards the limiting ring 810, while pushing the retaining ring 808 and the slide rod 809 to move in the same direction. The retaining ring 808 compresses the spring 811, causing it to deform.

[0058] When the protrusion 807 rotates to separate from the arc-shaped block 805, the elastic force of the spring 811 pushes the second retaining ring 808, the toothed ring 803, and the first retaining ring 804 back to their original positions. During the reciprocating sliding process, the toothed ring 803 drives the diversion pipe 6 to rotate through the toothed block 812 that meshes with it, thereby causing the air nozzle 7 on the outside of the diversion pipe 6 to rotate synchronously, adjusting the air delivery angle, and conveying hot air to the radial direction of the drum 2, further improving the uniformity of airflow, ensuring that the tea leaves are heated more evenly, and this linkage structure requires no additional power, making it more energy-efficient and environmentally friendly.

[0059] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A uniform airflow drying cylinder for tea processing, comprising a shell (1), a roller (2) rotatably installed inside the shell (1), a dehumidifying fan (3) installed at one end of the shell (1), and an air supply pipe (4) installed through one side of the shell (1); Its features are: The end of the air supply pipe (4) extends into the interior of the housing (1). One end of the air supply pipe (4) is fixedly installed with an annular pipe (5), and the annular pipe (5) is sleeved on the outside of the roller (2). A diversion pipe (6) is evenly sleeved on the outside of the annular pipe (5). An air supply nozzle (7) is installed on one side of the diversion pipe (6), and the air supply nozzle (7) is connected to the diversion pipe (6). A conveying mechanism (8) is provided between the diversion pipe (6), the roller (2), and the housing (1).

2. The uniform airflow drying cylinder for tea processing according to claim 1, characterized in that: The conveying mechanism (8) includes a chute (801), a toothed ring (803), a push ring (806), and a toothed block (812). The chute (801) is radially and evenly opened along the inner wall of the housing (1). A slider (802) is slidably connected inside the chute (801). The toothed ring (803) is located inside the housing (1), and the outer side of the toothed ring (803) is fixedly connected to the slider (802). A retaining ring one (804) and a retaining ring two (808) are respectively installed on both sides of the toothed ring (803). An arc-shaped block (805) is evenly fixed on the side of the retaining ring one (804) away from the retaining ring two (808). A sliding rod is fixed on the side of the retaining ring two (808) away from the retaining ring one (804). (809), a limiting ring (810) is movably sleeved on the outer side of the slide rod (809), and the limiting ring (810) is fixedly connected to the inner side wall of the housing (1). A spring (811) is movably sleeved on the outer side of the slide rod (809), and the two ends of the spring (811) are fixedly connected to one end of the slide rod (809) and one side of the limiting ring (810), respectively. A push ring (806) is fixedly sleeved on the outer side of the roller (2). A protrusion (807) is fixed on the side of the push ring (806) near the first retaining ring (804), and the protrusion (807) is slidably connected to the arc block (805). The toothed block (812) is evenly fixed on the outer side of the diverter pipe (6), and the toothed block (812) meshes with the toothed ring (803).

3. The uniform airflow drying cylinder for tea processing according to claim 1, characterized in that: A connecting ring is provided at the connection between the annular pipe (5) and the diversion pipe (6), and the outer side of the connecting ring matches the shape of the inner sidewall of the diversion pipe (6).

4. The uniform airflow drying cylinder for tea processing according to claim 1, characterized in that: The air nozzle (7) is a trumpet-shaped air nozzle, and the air nozzle (7) is inclined and set on the outside of the diversion pipe (6).

5. The uniform airflow drying cylinder for tea processing according to claim 2, characterized in that: The bump (807) is a hemispherical protrusion structure, and a wear-resistant layer is provided on the outer side of the bump (807).

6. The uniform airflow drying cylinder for tea processing according to claim 2, characterized in that: The outer side of the spring (811) is fitted with a dustproof bellows, and the two ends of the bellows are sealed to the slide rod (809) and the limiting ring (810) respectively.

7. The uniform airflow drying cylinder for tea processing according to claim 1, characterized in that: A protective net is installed at one end of the housing (1) near the dehumidifier (3), and the protective net is detachably connected to the end of the housing (1) by bolts.

8. A method for processing tea using a uniform airflow drying cylinder, based on the uniform airflow drying cylinder for tea processing according to any one of claims 1-7, characterized in that: Includes the following steps: Step 1: As the roller (2) rotates, it drives the outer push ring (806) to rotate. The push ring (806) then drives the protrusion (807) to rotate. When the protrusion (807) rotates, it will intermittently contact the arc block (805), and then drive the retaining ring (804) and toothed ring (805) on one side of the arc block (805) to move by pushing the arc block (805). Step 2: With the sliding engagement of the slider (802) and the groove (801) on the outside of the toothed ring (803), the toothed ring (803) slides horizontally towards the limiting ring (810) along the inside of the groove (801), and the toothed ring (803) pushes the second retaining ring (808) and the slide rod (809) to move in the same direction; Step 3: The second retaining ring (808) presses the spring (811) towards the limiting ring (810), causing it to compress and deform. When the protrusion (807) rotates to the point where it no longer contacts the arc-shaped block (805), it will push the second retaining ring (808), the toothed ring (803), and the first retaining ring (804) back to their original positions under the elastic force of the spring (811). Step 4: While the toothed ring (803) slides back and forth, the meshing toothed block (812) drives the diversion pipe (6) to rotate, which in turn drives the air nozzle (7) on the outside of the diversion pipe (6) to rotate, and delivers the hot air delivered by the air nozzle (7) to the radial direction of the drum (2).

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