A drum-type tea drying machine

Abstract

The utility model discloses a kind of roller type tea leaf drying machine, it is related to tea industry drying field, including drying cabinet, hollow roller is provided in drying cabinet, the axis of hollow roller is horizontally arranged, and the both ends of hollow roller are coaxially fixed with hollow feeding shaft and main shaft, hollow feeding shaft and main shaft are all rotationally connected drying cabinet, hollow feeding shaft communicates the inner chamber of hollow roller, the bottom of drying cabinet is connected with drain pipe, drying assembly is provided in drying cabinet, and drying assembly includes hollow rotating ring and hot air pipe, hollow rotating ring is rotationally installed on drying cabinet, hollow rotating ring is coaxial with hollow roller, multiple hot air pipes are connected on hollow rotating ring along its circumferential direction, and the arrangement angle range of multiple hot air pipes is 90-180 °, loading is carried out through hollow feeding shaft, water containing tea is poured into hollow roller in hollow feeding shaft by water pump, to realize automatic feeding, with the advantages of high efficiency, low cost.

Description

Technical Field

[0001] This utility model relates to the field of tea drying, specifically a drum-type tea drying machine. Background Technology

[0002] In the tea production process, washed tea leaves need to be dried using drying equipment. Currently, the tea drying process is gradually shifting towards mechanical drying, mainly divided into two categories: one involves placing the tea leaves on a continuous belt conveyor, forming a thin layer on the conveyor, and installing heating wires above the conveyor along its direction to dry the tea leaves. However, this method does not allow for turning or stir-frying the tea leaves during the drying process. The other method involves placing the tea leaves in a drum and introducing hot air into it. The rotation of the drum causes the tea leaves to turn over, achieving the purpose of stir-frying. However, this method is inconvenient for loading, requiring manual feeding of the washed tea leaves into the drum, resulting in high labor intensity and low efficiency. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a drum-type tea drying machine to solve the shortcomings of the existing technology.

[0004] The purpose of this utility model is achieved through the following technical solution: a drum-type tea dryer, including a drying box, in which a hollow drum is arranged. The axis of the hollow drum is horizontally arranged. A hollow feeding shaft and a main shaft are coaxially fixed at both ends of the hollow drum. The hollow feeding shaft and the main shaft are rotatably connected to the drying box. The hollow feeding shaft communicates with the inner cavity of the hollow drum. A drain pipe is connected to the bottom of the drying box. A drying assembly is arranged inside the drying box. The drying assembly includes a hollow rotating ring and hot air pipes. The hollow rotating ring is rotatably mounted on the drying box and is coaxial with the hollow drum. Multiple hot air pipes are connected to the hollow rotating ring along its own circumference. The arrangement angle of the multiple hot air pipes is in the range of 90-180°. Multiple hot air holes are opened on the side wall of the hot air pipes near the hollow drum along its own axial direction.

[0005] Furthermore, a driven gear is fitted onto the hollow rotating ring, a motor is installed on the outer wall of the drying chamber, and the output shaft of the motor passes through the drying chamber and is connected to a driving gear, which meshes with the driven gear.

[0006] Furthermore, one end of the main shaft extends out of the drying chamber and is connected to a first synchronous pulley. A drive motor is installed on the side wall of the drying chamber, and the output shaft of the drive motor is connected to a second synchronous pulley. The second synchronous pulley is connected to the first synchronous pulley via a synchronous belt drive.

[0007] Furthermore, an air cavity is formed between the inner and outer walls of the hollow rotating ring, the inner hole of the hot air pipe is connected to the air cavity, the hollow rotating ring is connected to an air inlet pipe, and the end of the air inlet pipe away from the hollow rotating ring is connected to a hot air mechanism.

[0008] Furthermore, the hot air mechanism includes a hot air box, an exhaust fan is installed at the air inlet of the hot air box, the air outlet of the hot air box is connected to the air inlet pipe, an exhaust fan is installed at the air outlet of the hot air box, and multiple electric heating wires are installed inside the hot air box.

[0009] Furthermore, the drying oven has an opening at the top, a lid is hinged to the top of the drying oven, and a discharge window is provided on the side wall of the hollow roller, with an arc-shaped cover hinged to the discharge window.

[0010] Furthermore, a first insert plate is fixed to one end of the arc-shaped cover away from the hinge position, and a second insert plate is fixed to the hollow roller. The first insert plate and the second insert plate are detachably connected by a bolt assembly.

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

[0012] The tea leaves are fed through a hollow feeding shaft. After washing, the tea leaves are not drained. Instead, a water pump pumps the water containing the tea leaves into the hollow drum through the hollow feeding shaft, thus achieving automatic feeding. This method has the advantages of high efficiency and low cost. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the internal structure of a drum-type tea dryer according to the present invention;

[0014] Figure 2 This is a schematic diagram of the hot air pipe arrangement in a drum-type tea dryer according to the present invention.

[0015] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0016] Figure 4 This is a schematic diagram of the internal structure of the hot air box in a drum-type tea dryer according to this utility model;

[0017] Figure 5 This is a schematic diagram of the hollowed-out drum in a drum-type tea dryer according to the present invention;

[0018] In the diagram, 1-drying box, 2-hollow drum, 3-hollow feeding shaft, 4-main shaft, 5-drain pipe, 6-hollow rotating ring, 7-hot air pipe, 8-hot air hole, 9-driven gear, 10-motor, 11-drive gear, 12-first synchronous belt pulley, 13-drive motor, 14-second synchronous belt pulley, 15-synchronous belt, 16-air inlet pipe, 17-hot air box, 18-electric heating wire, 19-box cover, 20-arc-shaped cover, 21-first insert plate, 22-second insert plate. Detailed Implementation

[0019] Example 1

[0020] like Figures 1 to 5 As shown, a drum-type tea dryer includes a drying chamber 1, inside which is a perforated drum 2. The axis of the perforated drum 2 is horizontally arranged. A hollow feeding shaft 3 and a main shaft 4 are coaxially fixed to both ends of the perforated drum 2, respectively. Both the hollow feeding shaft 3 and the main shaft 4 are rotatably connected to the drying chamber 1. The hollow feeding shaft 3 communicates with the inner cavity of the perforated drum 2. A drain pipe 5 is connected to the bottom of the drying chamber 1. A drying assembly is installed inside the drying chamber 1, including a hollow rotating ring 6 and hot air pipes 7. The hollow rotating ring 6 is rotatably mounted on the drying chamber 1 and is coaxial with the perforated drum 2. Multiple hot air pipes 7 are connected to the hollow rotating ring 6 along its circumference. The arrangement angle of the multiple hot air pipes 7 ranges from 90° to 180°. Multiple hot air pipes 7 are opened along their axial direction on the side wall near the perforated drum 2. During feeding, the hollow rotating ring 6 drives the hot air pipe 7 to rotate, positioning the hot air pipe 7 above the hollow drum 2. This prevents excessive moisture from entering the hot air pipe 7, which could affect the outlet temperature of the hot air pipe 7. Then, the discharge pipe of the washing box is connected to the hollow feeding shaft 3, which is equipped with a water pump. The water pump then pumps water from the washing box into the hollow drum 2, carrying the tea leaves into the hollow drum 2 to complete the automatic feeding. The moisture falls into the drying chamber 1 through the small holes on the hollow drum 2 and is discharged to a designated location through the drain pipe 5. Finally, the hollow rotating ring 6 drives the hot air pipe 7 to rotate to the bottom of the drying chamber 1, blowing hot air through the hot air holes onto the tea leaves. This bottom-up blowing method effectively disperses the tea leaves, improving the drying effect and efficiency.

[0021] Example 2

[0022] Based on Example 1, such as Figure 1 and Figure 5As shown, the top of the drying chamber 1 is open, and a lid 19 is hinged to the top of the drying chamber 1. A discharge window is opened on the side wall of the hollow roller 2, and an arc-shaped cover 20 is hinged to the discharge window. A first insert plate 21 is fixed to the end of the arc-shaped cover 20 away from the hinge position. A second insert plate 22 is fixed to the hollow roller 2. The first insert plate 21 and the second insert plate 22 are detachably connected by a bolt assembly, which includes a screw and a nut. The screw passes through the first insert plate 21 and the second insert plate 22 in sequence and is threaded to the nut, thereby connecting the arc-shaped cover 20 to the hollow roller 2 and sealing the discharge window. After the tea is dried, the lid 19 is opened, and then the bolt assembly is removed to open the arc-shaped cover 20 and take out the tea through the discharge window.

[0023] Example 3

[0024] Based on Example 2, such as Figure 1 As shown, a driven gear 9 is mounted on the hollow rotating ring 6. A motor 10 is installed on the outer wall of the drying chamber 1. The output shaft of the motor 10 passes through the drying chamber 1 and is connected to a driving gear 11. The driving gear 11 meshes with the driven gear 9. The motor 10 drives the hollow rotating ring 6 to rotate through the meshing of the driving gear 11 and the driven gear 9, which causes the hollow rotating ring 6 to drive the hot air pipe 7 to deflect, thereby adjusting the position of the hot air pipe 7 and realizing the switching between feeding and drying positions.

[0025] Example 4

[0026] Based on Example 3, such as Figures 1 to 4 As shown, a wind cavity is formed between the inner and outer walls of the hollow rotating ring 6. The inner hole of the hot air pipe 7 is connected to the ventilation cavity. The hollow rotating ring 6 is connected to an air inlet pipe 16. The end of the air inlet pipe 16 away from the hollow rotating ring 6 is connected to a hot air mechanism. The hot air mechanism includes a hot air box 17. An induced draft fan is installed at the air inlet of the hot air box 17. The air outlet of the hot air box 17 is connected to the air inlet pipe 16. An exhaust fan is installed at the air outlet of the hot air box 17. Multiple electric heating wires 18 are installed inside the hot air box 17. The induced draft fan introduces outside air into the hot air box. Inside the air box 17, air is heated by the electric heating wire 18 and then enters the air cavity of the hollow rotating ring 6 through the air inlet pipe 16. Finally, it is discharged from the hot air hole 8 of the hot air pipe 7 to achieve the drying operation. It should be noted that the hollow rotating ring 6 has a reciprocating deflection motion. After driving the hot air pipe 7 to rotate above the drying box 1, the hot air pipe 7 is moved to the bottom of the drying box 1 to avoid the problem of the air inlet pipe 16 getting tangled. The air inlet pipe 16 is a flexible hose that can adapt to the deflection motion of the hollow rotating ring 6.

[0027] Example 5

[0028] Based on Example 4, such as Figure 1As shown, one end of the main shaft 4 extends out of the drying chamber 1 and is connected to the first synchronous pulley 12. A drive motor 13 is installed on the side wall of the drying chamber 1. The output shaft of the drive motor 13 is connected to the second synchronous pulley 14. The second synchronous pulley 14 is connected to the first synchronous pulley 12 via a synchronous belt 15. The drive motor 13 drives the second synchronous pulley 14 to rotate, and the second synchronous pulley 14 drives the first synchronous pulley 12 to rotate via the synchronous belt 15. The first synchronous pulley 12 drives the main shaft 4 to rotate, and the main shaft 4 drives the hollow drum 2 to rotate, thereby causing the tea leaves to move and enhancing the drying effect.

Claims

1. A drum-type tea drying machine, comprising a drying chamber (1), characterized in that, The drying box (1) is equipped with a hollow roller (2), the axis of which is horizontal. A hollow feeding shaft (3) and a main shaft (4) are coaxially fixed at both ends of the hollow roller (2). Both the hollow feeding shaft (3) and the main shaft (4) are rotatably connected to the drying box (1). The hollow feeding shaft (3) communicates with the inner cavity of the hollow roller (2). A drain pipe (5) is connected to the bottom of the drying box (1). A drying assembly is installed inside the drying box (1). The drying assembly includes a hollow rotating ring (6) and hot air pipes (7). The hollow rotating ring (6) is rotatably mounted on the drying box (1). The hollow rotating ring (6) is coaxial with the hollow drum (2). Multiple hot air pipes (7) are connected to the hollow rotating ring (6) along its own circumference. The arrangement angle of the multiple hot air pipes (7) is 90-180°. Multiple hot air holes (8) are opened on the side wall of the hot air pipe (7) near the hollow drum (2) along its own axial direction.

2. The drum-type tea drying machine according to claim 1, characterized in that, A driven gear (9) is fitted on the hollow rotating ring (6). A motor (10) is installed on the outer wall of the drying box (1). The output shaft of the motor (10) passes into the drying box (1) and is connected to a driving gear (11). The driving gear (11) meshes with the driven gear (9).

3. A drum-type tea drying machine according to claim 1, characterized in that, One end of the main shaft (4) extends out of the drying box (1) and is connected to the first synchronous pulley (12). A drive motor (13) is installed on the side wall of the drying box (1). The output shaft of the drive motor (13) is connected to the second synchronous pulley (14). The second synchronous pulley (14) is connected to the first synchronous pulley (12) through a synchronous belt (15).

4. A drum-type tea drying machine according to claim 1, characterized in that, A wind cavity is formed between the inner wall and the outer wall of the hollow rotating ring (6). The inner hole of the hot air pipe (7) is connected to the wind cavity. The hollow rotating ring (6) is connected to an air inlet pipe (16). The end of the air inlet pipe (16) away from the hollow rotating ring (6) is connected to a hot air mechanism.

5. A drum-type tea drying machine according to claim 4, characterized in that, The hot air mechanism includes a hot air box (17), an exhaust fan is installed at the air inlet of the hot air box (17), the air outlet of the hot air box (17) is connected to the air inlet pipe (16), an exhaust fan is installed at the air outlet of the hot air box (17), and multiple electric heating wires (18) are provided inside the hot air box (17).

6. A drum-type tea drying machine according to claim 1, characterized in that, The top opening of the drying box (1) is hinged with a box cover (19), and the side wall of the hollow roller (2) is provided with a discharge window, and an arc-shaped cover (20) is hinged on the discharge window.

7. A drum-type tea drying machine according to claim 6, characterized in that, The arc-shaped cover (20) has a first insert plate (21) fixed at one end away from the hinge position, and a second insert plate (22) is fixed on the hollow roller (2). The first insert plate (21) and the second insert plate (22) are detachably connected by a bolt assembly.

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