Tea blank hot air drying equipment for osmanthus fragrans black tea production

Abstract

The utility model relates to the field of drying equipment, concretely relates to a tea blank hot -blast drying equipment for osmanthus fragrans black tea production, including shell, rotary net cylinder, hot -blast device and hot -blast nozzle, rotary net cylinder horizontal extension and two ends are provided with feed pipe and discharge pipe respectively, the shell is provided with the drive mechanism connected with feed pipe, the hot -blast nozzle sets up below rotary net cylinder and is provided with multiple open upward nozzles, the shell is provided with the exhaust pipe, the outside of rotary net cylinder is provided with the brush board contacted with rotary net cylinder, the inside of rotary net cylinder is provided with the push material spiral, the utility model reduces the influence drying because of the tea blank sticking in the inner wall of rotary net cylinder, keeps good drying effect.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment, specifically to a hot air drying device for tea blanks used in the production of osmanthus black tea. Background Technology

[0002] Osmanthus black tea is a unique tea beverage that cleverly blends black tea with osmanthus flowers, possessing both the mellow richness of black tea and the delicate fragrance of osmanthus. Drying the tea leaves is a crucial step in the scenting process, serving to: fix quality and stop fermentation, optimize aroma absorption, enhance aroma and flavor, and facilitate storage and subsequent processing. Hot air drying is commonly used for tea leaves, but existing drying equipment often results in tea leaves sticking to the equipment, affecting the drying effect. Therefore, it is necessary to design a hot air drying device for osmanthus black tea production that can reduce tea leaves sticking to the inner wall and maintain good drying results. Summary of the Invention

[0003] The purpose of this invention is to provide a hot air drying device for tea blanks used in the production of osmanthus black tea, which reduces the sticking of tea blanks to the inner wall and maintains a good drying effect for the tea blanks.

[0004] The technical solution adopted is as follows:

[0005] A hot air drying device for tea leaves used in the production of osmanthus black tea includes an outer shell, a rotating screen cylinder, a hot air device, and a hot air spray pipe. The rotating screen cylinder extends horizontally and has a feed pipe and a discharge pipe at both ends. The outer shell is equipped with a drive mechanism connected to the feed pipe. The hot air spray pipe is located below the rotating screen cylinder and has multiple upward-facing nozzles. The outer shell is equipped with an exhaust pipe. A brush plate is provided on the outside of the rotating screen cylinder to contact the rotating screen cylinder. A pushing screw is provided inside the rotating screen cylinder.

[0006] Preferably, the exhaust duct is connected to a heat exchanger, and the hot air device includes an air inlet duct, the heat exchanger is connected to the air inlet duct, and the heat exchanger preheats the air.

[0007] Preferably, the drive mechanism includes a variable frequency motor, the variable frequency motor is connected to a drive gear, and the feed pipe is fixedly provided with a gear ring that meshes with the drive gear.

[0008] Preferably, there are multiple brush plates arranged in a semi-circle to illuminate the outside of the rotating mesh cylinder.

[0009] Preferably, the inner wall of the rotating mesh cylinder is provided with multiple vertical plates.

[0010] Preferably, the height of the vertical plate is one-third of the height of the pusher screw.

[0011] Compared to existing technologies, the advantages are:

[0012] This invention uses a rotating mesh cylinder to rotate the tea leaves, and a hot air gun to evenly dry the tea leaves. During the drying process, a brush plate cleans the side wall of the rotating mesh cylinder with brushes, sweeping off the tea leaves stuck to the inner wall of the rotating mesh cylinder, reducing the impact of the tea leaves sticking to the inner wall of the rotating mesh cylinder on the drying process, and maintaining a good drying effect. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a hot air drying device for tea leaves used in the production of osmanthus black tea, according to this utility model.

[0014] Figure 2 This is a schematic diagram of the internal structure of a hot air drying device for tea leaves used in the production of osmanthus black tea, according to this utility model.

[0015] Figure 3 This is a schematic diagram of the left side of a hot air drying device for tea leaves used in the production of osmanthus black tea, according to this utility model.

[0016] Figure 4 This is a top view schematic diagram of a hot air drying device for tea leaves used in the production of osmanthus black tea according to this utility model.

[0017] In the diagram: 1. Outer shell; 2. Rotating mesh cylinder; 3. Hot air device; 4. Hot air nozzle; 5. Feed pipe; 6. Discharge pipe; 7. Variable frequency motor; 8. Drive gear; 9. Gear ring; 10. Nozzle; 11. Exhaust pipe; 12. Heat exchanger; 13. Brush plate; 14. Pushing screw; 15. Vertical plate. Detailed Implementation

[0018] The present invention will be further described below with reference to specific embodiments, such as... Figures 1 to 4 As shown:

[0019] Example 1: A hot air drying device for tea leaves used in the production of osmanthus black tea includes a shell 1, a rotating screen cylinder 2, a hot air device 3, and a hot air spray pipe 4. The rotating screen cylinder 2 extends horizontally and has a feed pipe 5 and a discharge pipe 6 at both ends, which extend coaxially and are rotatably and sealed to the shell 1. The shell 1 is provided with a drive mechanism connected to the feed pipe 5, which drives the feed pipe 5 to rotate in the forward or reverse direction.

[0020] The hot air nozzle 4 is located below the rotating mesh cylinder 2 and has multiple upward-facing nozzles 10. The hot air nozzle 4 is connected to the hot air device 3 by an air supply pipe. The outer shell 1 is provided with an exhaust pipe 11, which is located above the outer shell 1 and is used to exhaust hot and humid air.

[0021] A brush plate 13 is provided on the outer side of the rotating screen cylinder 2, which contacts the rotating screen cylinder 2. During the drying process of the tea leaves, the brush plate 13 uses brushes to clean the side wall of the rotating screen cylinder 2 and sweep off the tea leaves stuck to the inner wall of the rotating screen cylinder 2, reducing the impact of the tea leaves sticking to the inner wall of the rotating screen cylinder 2 on the drying process. A pusher screw 14 is provided inside the rotating screen cylinder 2. When feeding, the pusher screw 14 pushes the tea leaves to move towards the discharge pipe 6. During drying, the drive mechanism drives the rotating screen cylinder 2 to rotate back and forth, so that the tea leaves move inside the rotating screen cylinder 2.

[0022] Example 2: A hot air drying device for tea leaves used in the production of osmanthus black tea includes a shell 1, a rotating screen cylinder 2, a hot air device 3, and a hot air spray pipe 4. The rotating screen cylinder 2 extends horizontally and has a feed pipe 5 and a discharge pipe 6 at both ends, which extend coaxially and are rotatably and sealed to the shell 1. The shell 1 is provided with a drive mechanism connected to the feed pipe 5. The drive mechanism drives the feed pipe 5 to rotate in the forward or reverse direction. The drive mechanism includes a variable frequency motor 7, which is connected to a drive gear 8. The feed pipe 5 is fixedly provided with a gear ring 9 that meshes with the drive gear 8. The rotation speed of the rotating screen cylinder 2 is changed by changing the frequency of the variable frequency motor 7.

[0023] The hot air nozzle 4 is located below the rotating mesh cylinder 2 and has multiple upward-facing nozzles 10. The hot air nozzle 4 is connected to the hot air device 3 via an air supply pipe. The outer shell 1 is provided with an exhaust pipe 11, which is located above the outer shell 1 and is used to exhaust hot and humid air. The exhaust pipe 11 is connected to a heat exchanger 12. The hot air device 3 includes an air inlet pipe, and the heat exchanger 12 is connected to the air inlet pipe. The heat exchanger 12 preheats the air, which helps to reduce energy consumption.

[0024] Multiple brush plates 13 are provided on the outer side of the rotating screen cylinder 2, which are in contact with the rotating screen cylinder 2. The brush plates 13 form a semi-circle and illuminate the outer side of the rotating screen cylinder 2. During the drying process of the tea leaves, the brush plates 13 use brushes to clean the side wall of the rotating screen cylinder 2 and sweep off the tea leaves that are stuck to the inner wall of the rotating screen cylinder 2, thereby reducing the impact of the tea leaves sticking to the inner wall of the rotating screen cylinder 2 on the drying process. A pusher screw 14 is provided inside the rotating screen cylinder 2. When feeding, the pusher screw 14 pushes the tea leaves to move towards the discharge pipe 6. During the drying process, the drive mechanism drives the rotating screen cylinder 2 to rotate back and forth, so that the tea leaves move inside the rotating screen cylinder 2.

[0025] The inner wall of the rotating mesh cylinder 2 is provided with multiple vertical plates 15. The vertical plates 15 serve to support the tea cakes and reduce the chance of them sticking to the inner wall of the rotating mesh cylinder 2. The height of the vertical plates 15 is one-third of the height of the pushing screw 14 to avoid the vertical plates 15 affecting the pushing of the pushing screw 14.

[0026] The working principle is as follows: The drive mechanism drives the rotating screen cylinder 2 to rotate back and forth. The hot air device 3 is activated to deliver hot air to the hot air nozzle 4 and spray it out. The tea leaves are put into the interior of the rotating screen cylinder 2 through the feed pipe 5 for hot air drying. During the drying process, the brush plate 13 uses brushes to clean the side wall of the rotating screen cylinder 2 and sweep off the tea leaves stuck to the inner wall of the rotating screen cylinder 2, reducing the impact of the tea leaves sticking to the inner wall of the rotating screen cylinder 2 on the drying process. After the drying is completed, the pusher screw 14 pushes the tea leaves to move towards the discharge pipe 6 to discharge the tea leaves. During the drying process, the heat exchanger 12 is used to preheat the air, which helps to reduce energy consumption.

[0027] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A hot air drying device for tea leaves used in the production of osmanthus black tea, characterized in that: The device includes an outer shell (1), a rotating mesh cylinder (2), a hot air device (3), and a hot air nozzle (4). The rotating mesh cylinder (2) extends horizontally and has a feed pipe (5) and a discharge pipe (6) at both ends. The outer shell (1) is provided with a drive mechanism connected to the feed pipe (5). The hot air nozzle (4) is located below the rotating mesh cylinder (2) and has multiple upward-facing nozzles (10). The outer shell (1) is provided with an exhaust pipe (11). The outer side of the rotating mesh cylinder (2) is provided with a brush plate (13) that contacts the rotating mesh cylinder (2). The inside of the rotating mesh cylinder (2) is provided with a pusher screw (14).

2. The hot air drying equipment for tea leaves used in the production of osmanthus black tea as described in claim 1, characterized in that: The exhaust pipe (11) is connected to a heat exchanger (12), and the hot air device (3) includes an air inlet pipe. The heat exchanger (12) is connected to the air inlet pipe and preheats the air.

3. The hot air drying equipment for tea leaves used in the production of osmanthus black tea as described in claim 1, characterized in that: The drive mechanism includes a variable frequency motor (7), the variable frequency motor (7) is connected to a drive gear (8), and the feed pipe (5) is fixedly provided with a gear ring (9) that meshes with the drive gear (8).

4. The hot air drying equipment for tea leaves used in the production of osmanthus black tea as described in claim 1, characterized in that: There are multiple brush plates (13), which form a semi-circle that illuminates the outside of the rotating mesh cylinder (2).

5. The hot air drying equipment for tea leaves used in the production of osmanthus black tea as described in claim 1, characterized in that: The inner wall of the rotating mesh cylinder (2) is provided with multiple vertical plates (15).

6. The hot air drying equipment for tea leaves used in the production of osmanthus black tea as described in claim 5, characterized in that: The height of the vertical plate (15) is one-third of the height of the pusher screw (14).

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