Tea winnowing device

Abstract

The utility model relates to the technical field of tea processing equipment, and discloses a tea winnowing device which comprises a winnowing machine shell, a draught fan and a material distributing hopper, the draught fan is arranged on one side of the inner wall of the bottom of the winnowing machine shell, the material distributing hopper is arranged at the bottom of the winnowing machine shell, and the bottom end of the inclined face of a material guiding plate is close to one side of the material distributing hopper. Tea leaves on the material guide plate are preliminarily dispersed through vibration of the vibration motor, the claw roller is driven by the driving motor to rotate, the claw roller makes contact with the tea leaves, the tea leaves are spread to be uniform in thickness, finally, the tea leaves are vibrated to fall off step by step, and the tea leaves are evenly spread. The tea leaves with different weights move at different speeds on the steps, so that primary separation of the tea leaves is realized, and the tea leaves generate different excursion and rising speeds under the action of air blowing according to different densities and shapes and under the influence of air flow, so that separation is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of tea processing equipment, in particular to a tea winnowing device. Background Art

[0002] Tea winnowing is a process of sorting tea by a machine using the principle of aerodynamics. The negative pressure generated by the fan guides air to enter the machine from the air inlet, accelerating and dispersing the air flow to create conditions for the separation process. Under the action of the blowing, according to the different densities and shapes, the tea leaves generate different offsets and rising speeds under the influence of the air flow, so as to achieve separation to meet the characteristics and processing requirements of different teas.

[0003] The existing Chinese patent (CN207288084U) discloses a tea winnowing machine, which includes a machine case. It is characterized in that a fan is included in the machine case, the fan is arranged on the right side of the machine case, and an air inlet is also arranged on the right side of the machine case. Correspondingly, an air outlet is arranged on the left side of the machine case; an automatic feeding device is arranged on the left side of the fan, and a sub-packaging mechanism is arranged on the left side of the automatic feeding device. The sub-packaging mechanism includes at least two collection boxes, which are evenly arranged from left to right. The telescopic mechanism pushes the material conveying block to rise, and at the same time drives the tea leaves in the material conveying box to rise until the material conveying block just extends out of the material conveying box body. At this time, the side surface of the material conveying block blocks the feeding channel; after the tea leaves extend out of the material conveying box body, they float to the left under the blowing of the fan.

[0004] In the above technical solution, the tea leaves are pushed out of the material conveying box body by the telescopic mechanism and then blown by the wind force of the fan. However, when conveying the tea leaves in this way, when the tea leaves in the material conveying box are uneven in height on one side and the other side, that is, when the tea leaves are unevenly distributed, it is difficult for the fan to evenly disperse the tea leaves, thus affecting the sorting effect. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a tea winnowing device to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A tea winnowing device, including: a winnowing machine case, a fan and a material distribution hopper. A fan is arranged on one side of the inner wall at the bottom of the winnowing machine case, a fan air outlet cover is arranged outside the fan, a guide plate is arranged above the fan air outlet cover on the inner wall of the winnowing machine case, the guide plate is inclined, a material distribution hopper is arranged at the bottom of the winnowing machine case, one side close to the material distribution hopper is at the bottom end of the inclined surface of the guide plate, a feeding hopper is arranged above the guide plate at the top of the winnowing machine case, a vibration motor is arranged on the bottom surface of the guide plate, a claw roller is arranged between the inner walls on both sides of the winnowing machine case, the claw roller is located above the guide plate, and a step is arranged on the top surface of the guide plate.

[0007] Further, an air inlet is provided on one side of the air separation machine housing close to the fan, and an air outlet is provided on the other side of the air separation machine housing away from the air inlet. An air outlet filter plate is provided inside the air outlet, and an air outlet housing is provided on the outer wall of the air separation machine housing outside the air outlet filter plate. A pressure relief valve is provided on one side of the air outlet housing.

[0008] Further, an air knife is provided at the top end of the inclined surface of the material guiding plate, and a return air pipe is provided on one side of the air knife. One end of the return air pipe communicates with the air outlet housing.

[0009] Further, the claw roller includes a rotating roller and claw-shaped projections. A plurality of claw-shaped projections are uniformly arranged on the outer wall of the rotating roller. There is a gap between the claw-shaped projections and the top surface of the material guiding plate. A driving motor is provided on one side of the outer wall of the air separation machine housing. One end of the output shaft of the driving motor is fixedly connected to one end of the claw roller.

[0010] Further, the air outlet of the air knife faces the discharge port at the bottom end of the feed hopper, and the air outlet direction of the fan air outlet hood faces the material guiding plate.

[0011] Further, there are a plurality of distribution hoppers, and partitions are provided between the plurality of distribution hoppers.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] By providing the air separation machine housing, the material guiding plate and the vibration motor, the present utility model realizes that when the tea air separation device is used, tea is added into the air separation machine housing through the feed hopper. The tea first falls onto the material guiding plate. Through the vibration of the vibration motor, the tea on the material guiding plate is preliminarily dispersed. The driving motor drives the claw roller to rotate. By contacting the claw roller with the tea, the tea is evenly spread in thickness. Finally, the tea cascades down step by step. Teas of different weights have different moving speeds on the steps, realizing the preliminary separation of the tea. Subsequently, the fan blows air and the air is guided by the material guiding plate to blow the tea at the bottom of the inclined surface of the material guiding plate. Under the action of the blowing, according to different densities and shapes, the tea has different offsets and rising speeds under the influence of the air flow, realizing the separation and falling into different distribution hoppers. The entire air separation device, through the combined action of the material guiding plate, the claw roller, the steps and the vibration motor, ensures the uniform dispersion of the tea, which is beneficial to improving the tea sorting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional view of a tea air separation device of the present utility model;

[0015] Figure 2 is an internal structure schematic diagram of a tea air separation device of the present utility model;

[0016] Figure 3 is a main sectional view of a tea air separation device of the present utility model;

[0017] Figure 4 is Figure 3 The enlarged structural schematic diagram at position A in

[0018] In the figure: 1. Air separation machine shell; 2. Feed hopper; 3. Air outlet shell; 4. Material distribution hopper; 5. Return air duct; 6. Partition board; 7. Driving motor; 8. Claw roller; 9. Guide plate; 10. Step; 11. Air knife; 12. Fan air outlet hood; 13. Pressure relief valve; 14. Fan; 15. Air inlet; 16. Vibration motor; 17. Air outlet filter plate. Specific implementation mode

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0020] Please refer to Figures 1-4 , the present utility model provides a technical solution: a tea air separation device, including: an air separation machine shell 1, a fan 14 and a material distribution hopper 4. A fan 14 is provided on one side of the inner wall at the bottom of the air separation machine shell 1, a fan air outlet hood 12 is provided outside the fan 14, a guide plate 9 is provided above the fan air outlet hood 12 on the inner wall of the air separation machine shell 1, the guide plate 9 is inclined, a material distribution hopper 4 is provided at the bottom of the air separation machine shell 1, the bottom end of the inclined surface of the guide plate 9 is close to one side of the material distribution hopper 4, a feed hopper 2 is provided above the guide plate 9 at the top of the air separation machine shell 1, a vibration motor 16 is provided on the bottom surface of the guide plate 9, a claw roller 8 is provided between the inner walls on both sides of the air separation machine shell 1, the claw roller 8 is located above the guide plate 9, and a step 10 is provided on the top surface of the guide plate 9. Through the vibration of the vibration motor 16, the tea leaves on the guide plate 16 are preliminarily dispersed. The claw roller 8 is driven to rotate by the driving motor 7, and the claw roller 8 contacts the tea leaves to evenly spread the tea leaves in thickness. Finally, the tea leaves fall step by step on the step 10, and the moving speeds of the tea leaves with different weights on the step 10 are different, realizing the preliminary separation of the tea leaves. Subsequently, the fan 14 blows air to guide the air through the guide plate 9, and blows the tea leaves at the bottom of the inclined surface of the guide plate 9. Under the action of the blowing, according to the different densities and shapes, the tea leaves generate different offsets and rising speeds under the influence of the air flow, realizing the separation.

[0021] An air inlet 15 is opened on one side of the air separation machine shell 1 close to the fan 14, an air outlet is opened on the side of the air separation machine shell 1 away from the air inlet 15, an air outlet filter plate 17 is provided inside the air outlet, an air outlet shell 3 is provided on the outer wall of the air separation machine shell 1 outside the air outlet filter plate 17, a pressure relief valve 13 is provided on one side of the air outlet shell 3, the air outlet is filtered by the air outlet filter plate 17 and then enters the return air duct 5 for reuse. When the internal air pressure of the air separation machine shell 1 is relatively high, pressure relief is carried out through the pressure relief valve 13 to ensure the stability of the pressure, thereby ensuring the stability of the air separation effect.

[0022] At the top of the inclined plane of the material guiding plate 9, there is an air knife 11. On one side of the air knife 11, there is a return air pipe 5. One end of the return air pipe 5 communicates with the air outlet housing 3. The air outlet of the air knife 11 faces the discharge port at the bottom end of the feed hopper 2, and the air outlet direction of the fan air outlet hood 12 faces the material guiding plate 9. The air blown out by the air knife 11 blows on the tea leaves on the material guiding plate 9, which is convenient for the discharge of the tea leaves. At the same time, the excess wind force can be recovered, saving energy.

[0023] The claw roller 8 includes a rotating roller and claw-shaped projections. A number of claw-shaped projections are evenly arranged on the outer wall of the rotating roller. There is a gap between the claw-shaped projections and the top surface of the material guiding plate 9. On one side of the outer wall of the air separation machine housing 1, there is a driving motor 7. One end of the output shaft of the driving motor 7 is fixedly connected to one end of the claw roller 8. The driving motor 7 drives the claw roller 8 to rotate. By contacting the claw roller 8 with the tea leaves, the tea leaves are evenly spread in terms of thickness.

[0024] There are multiple material distribution hoppers 4. A partition plate 6 is provided between the multiple material distribution hoppers 4. The partition plate 6 is used to separate the material distribution hoppers 4, so as to separate tea leaves with different densities and shapes.

[0025] When the tea leaf air separation device is in use, tea leaves are added into the air separation machine housing 1 through the feed hopper 2. The tea leaves first fall onto the material guiding plate 9. Through the vibration of the vibration motor 16, the tea leaves on the material guiding plate 16 are preliminarily dispersed. The driving motor 7 drives the claw roller 8 to rotate. By contacting the claw roller 8 with the tea leaves, the tea leaves are evenly spread in terms of thickness. Finally, the tea leaves fall step by step on the steps 10. Tea leaves with different weights have different moving speeds on the steps 10, realizing the preliminary separation of the tea leaves. Subsequently, the fan 14 blows air to guide the air through the material guiding plate 9 and blows the tea leaves at the bottom of the inclined plane of the material guiding plate 9. Under the action of the blowing air, the tea leaves, according to their different densities and shapes, have different offsets and rising speeds under the influence of air flow, realizing separation and falling into different material distribution hoppers 4. For the entire air separation device, through the combined action of the material guiding plate, the claw roller, the steps 10 and the vibration motor 16, the uniform dispersion of the tea leaves is ensured, which is beneficial to improving the effect of tea leaf sorting.

[0026] Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Claims

1. A tea wind selection device, comprising: A pneumatic separation casing (1), a fan (14) and a material distribution hopper (4), characterized in that: a fan (14) is provided on one side of the inner wall at the bottom of the pneumatic separation casing (1), a fan outlet hood (12) is provided on the outer side of the fan (14), a guide plate (9) is provided on the inner wall of the pneumatic separation casing (1) above the fan outlet hood (12), the guide plate (9) is arranged at an inclination, a material distribution hopper (4) is provided at the bottom of the pneumatic separation casing (1), the bottom end of the inclined surface of the guide plate (9) is close to one side of the material distribution hopper (4), a feed hopper (2) is provided at the top of the pneumatic separation casing (1) above the guide plate (9), a vibration motor (16) is provided on the bottom surface of the guide plate (9), a claw roller (8) is provided between the inner walls on both sides of the pneumatic separation casing (1), the claw roller (8) is located above the guide plate (9), and a step (10) is provided on the top surface of the guide plate (9).

2. A tea wind selection device according to claim 1, characterized in that: The air separation casing (1) is provided with an air inlet (15) on the side close to the fan (14), and the air separation casing (1) is provided with an air outlet on the side away from the air inlet (15). An air outlet filter plate (17) is provided on the inner side of the air outlet. An air outlet casing (3) is provided on the outer wall of the air separation casing (1) outside the air outlet filter plate (17), and a pressure relief valve (13) is provided on one side of the air outlet casing (3).

3. A tea wind selection device according to claim 2, characterized in that: A wind knife (11) is provided at the top of the inclined surface of the guide plate (9), and a return air duct (5) is provided on one side of the wind knife (11), and one end of the return air duct (5) is connected to the air outlet shell (3).

4. The tea leaf air selection device according to claim 1, characterized in that: The claw roller (8) comprises a rotating roller and a pushing claw, a plurality of pushing claws are evenly arranged on the outer wall of the rotating roller, a gap is left between the pushing claws and the top surface of the material guide plate (9), a driving motor (7) is arranged on one side of the outer wall of the air separation machine housing (1), and one end of the output shaft of the driving motor (7) is fixedly connected to one end of the claw roller (8).

5. The tea leaf air selection device according to claim 3, characterized in that: The air outlet of the wind knife (11) faces the outlet at the bottom end of the feed hopper (2), and the air outlet direction of the fan air outlet cover (12) faces the guide plate (9).

6. The tea leaf air selection device according to claim 1, characterized in that: There are a plurality of the material distribution hoppers (4), and partitions (6) are provided between the plurality of material distribution hoppers (4).

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