Tea classifying and screening equipment

Abstract

The utility model relates to the technical field of tea screening, in particular to tea grading and screening equipment which comprises an impurity screening barrel and a multi-stage screening barrel, the impurity screening barrel and the multi-stage screening barrel are rotationally arranged in a first outer barrel and a second outer barrel respectively, and gear rings are fixedly sleeved on the impurity screening barrel and the multi-stage screening barrel respectively. One end of the impurity screening cylinder and one end of the multi-stage screening cylinder are respectively provided with a driving motor, and the output end of each driving motor is connected with a gear; a dust outlet pipe is connected to one side of the bottom of the impurity screening barrel, and a dust removal mechanism is connected to a feeding port of the impurity screening barrel. The multi-stage screening cylinder is composed of a first-stage screening cylinder, a second-stage screening cylinder and a third-stage screening cylinder which are connected in sequence, annular striker plates are arranged between the second-stage screening cylinder and the first-stage screening cylinder and between the second-stage screening cylinder and the third-stage screening cylinder in a sleeved mode respectively, and the annular striker plates are rotationally connected with the impurity screening cylinder. A first-stage discharging pipe, a second-stage discharging pipe and a third-stage discharging pipe are connected to the bottoms, corresponding to the first-stage screening barrel, the second-stage screening barrel and the third-stage screening barrel, of the second outer barrel correspondingly.

Description

Technical Field

[0001] The utility model relates to the technical field of tea screening, in particular to a tea grading and screening device. Background Art

[0002] At present, tea is an indispensable part of our lives. The production process of tea is relatively complex. Tea processing, also known as "tea making", is a process of turning fresh tea leaves into various semi-finished or finished teas through various processing procedures. Generally, tea needs to be graded and screened before processing. Most common tea screening devices mostly use the method of high-efficiency vibration up and down for screening, with low screening efficiency, poor screening effect, and the machine generates large high-frequency vibrations and noises during the screening process, which cannot meet the production needs, and the tea leaves vibrating on the screen are easy to break. Content of the Utility Model

[0003] In order to solve the above technical problems, the utility model specifically adopts the following technical solutions.

[0004] Design a tea grading and screening device, including an impurity screening cylinder and a multi-stage screening cylinder. The impurity screening cylinder and the multi-stage screening cylinder are respectively rotatably arranged in outer cylinder one and outer cylinder two. The discharge port of the impurity screening cylinder is rotatably connected to the feed port of the multi-stage screening cylinder. Tooth rings are respectively fixedly sleeved at the feed port of the impurity screening cylinder and the discharge port of the multi-stage screening cylinder. Driving motors are respectively arranged at one end of the impurity screening cylinder and the multi-stage screening cylinder, and gears meshing with their respective tooth rings are respectively connected to the output ends of each driving motor;

[0005] An air outlet pipe is connected to one side of the bottom of the impurity screening cylinder, and a dust removal mechanism is connected to the feed port and the top of the cylinder body of the impurity screening cylinder;

[0006] The multi-stage screening cylinder is composed of a first-stage screening cylinder, a second-stage screening cylinder, and a third-stage screening cylinder connected in sequence. Annular baffle plates are respectively sleeved between the second-stage screening cylinder and the first-stage screening cylinder and the third-stage screening cylinder. The outer peripheral surface of the annular baffle plate is fixedly connected to outer cylinder two, and the annular baffle plate is rotatably connected to the impurity screening cylinder. A first-stage discharge pipe, a second-stage discharge pipe, and a third-stage discharge pipe are respectively connected to the bottom of outer cylinder two corresponding to the first-stage screening cylinder, the second-stage screening cylinder, and the third-stage screening cylinder.

[0007] Preferably, a feed pipe is connected to the feed port of the impurity screening cylinder, and a feed hopper is connected to the feed pipe. The dust removal mechanism includes a dust suction hood connected to the top of the feed hopper through a connecting rod, a dust removal pipeline connected to the top of the dust suction hood, a dust suction pipeline connected to one side of the top of outer cylinder one. The dust removal pipeline is connected to the dust suction pipeline, and the dust suction pipeline is externally connected to a vacuum cleaner.

[0008] Preferably, both the first outer cylinder and the second outer cylinder are inclined in the same direction, and they have the same inclination angle. The impurity screening cylinder and the multi-stage screening cylinder are respectively arranged in the corresponding first outer cylinder and second outer cylinder at the same inclination angle.

[0009] Preferably, a support frame is provided below the impurity screening cylinder and the multi-stage screening cylinder. The impurity screening cylinder and the multi-stage screening cylinder are respectively fixed on the support frame through support legs.

[0010] Preferably, the screening mesh holes on the first-stage screening cylinder, the second-stage screening cylinder, and the third-stage screening cylinder gradually decrease.

[0011] The beneficial effects of the present utility model are as follows:

[0012] 1. By setting a rotating impurity screening cylinder to preliminarily remove impurities and dust from the tea leaves first, and then feeding them into the multi-stage screening cylinder, the dust-removed tea leaves can be screened step by step at one time, with high screening efficiency. Moreover, compared with the traditional vibrating screening method, the rotating multi-stage screening cylinder can produce a higher output of screened tea leaves.

[0013] 2. By connecting a dust removal mechanism to the feed hopper and the impurity screening cylinder, the dust at the tea leaf feed hopper is adsorbed by the dust suction hood, and the dust during screening in the impurity screening cylinder can be absorbed by the dust removal pipe, so as to perform dust-free screening in the subsequent multi-stage screening.

[0014] 3. The inclined impurity screening cylinder and the multi-stage screening cylinder are rotatably connected. After the tea leaves are preliminarily dust-removed, they can directly enter the multi-stage screening cylinder along its inclined plane. The dust-removed tea leaves are sequentially screened step by step along its inclined plane in the multi-stage screening cylinder, and it is convenient for discharging. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of the structure of the present utility model;

[0016] The reference numerals in the figure are: 1 support frame, 2 feed pipe, 3 feed hopper, 4 dust suction hood, 5 dust removal pipe, 6 dust suction pipe, 7 first outer cylinder, 8 impurity screening cylinder, 9 second outer cylinder, 10 multi-stage screening cylinder, 11 first-stage screening cylinder, 12 baffle plate, 13 second-stage screening cylinder, 14 third-stage screening cylinder, 15 drive motor, 16 gear, 17 toothed ring, 18 third-stage discharge pipe, 19 second-stage discharge pipe, 20 first-stage discharge pipe, 21 dust outlet pipe. Detailed Embodiments

[0017] The following describes the preferred embodiments of the present utility model with reference to the drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0018] Embodiment 1

[0019] A tea grading and screening device, as Figure 1 shown, includes an impurity screening cylinder 8 and a multi-stage screening cylinder 10. The impurity screening cylinder 8 and the multi-stage screening cylinder 10 are respectively rotatably arranged in the outer cylinder one 7 and the outer cylinder two 9. The discharge port of the impurity screening cylinder 8 is rotatably connected to the feed port of the multi-stage screening cylinder 10. For the convenience of discharging, both the outer cylinder one 7 and the outer cylinder two 9 are inclined in the same direction, and their inclination angles are the same. The impurity screening cylinder 8 and the multi-stage screening cylinder 10 are respectively arranged in the corresponding outer cylinder one 7 and outer cylinder two 9 at the same inclination angle. The screening mesh holes on the primary screening cylinder 11, the secondary screening cylinder 13, and the tertiary screening cylinder 14 gradually decrease to facilitate the gradual screening of tea. A support frame 1 is provided below the impurity screening cylinder 8 and the multi-stage screening cylinder 10, and the impurity screening and the multi-stage screening cylinder 10 are respectively fixed on the support frame 1 through support legs.

[0020] At the feed port of the impurity screening cylinder 8 and the discharge port of the multi-stage screening cylinder 10, gear rings 17 are respectively fixedly sleeved. At one end of the impurity screening cylinder 8 and the multi-stage screening cylinder 10, drive motors 15 are respectively provided. On the output end of each drive motor 15, a gear 16 meshing with its respective gear ring 17 is respectively connected; the rotation of the drive motor 15 drives the gear 16 to rotate, thereby driving the gear ring 17 to rotate, and further causing the impurity screening cylinder 8 and the multi-stage screening cylinder 10 to rotate, so as to perform rotational screening on the tea inside, avoiding the tea being shattered by vibration and affecting the production capacity during the processing and screening of tea. The impurity screening cylinder 8 is used to preliminarily screen out the impurities in the tea, and the multi-stage screening cylinder 10 can perform rotational grading and screening on the tea at one time.

[0021] On one side of the bottom of the impurity screening cylinder 8, a dust outlet pipe 21 is connected. The dust outlet pipe 21 is arranged at the bottommost end of the bottom of the outer cylinder one 7 to facilitate the discharge of impurities along the inclined surface of the outer cylinder one 7. A dust removal mechanism is connected at the feed port and the top of the cylinder body of the impurity screening cylinder 8; a feed pipe 2 is connected to the feed port of the impurity screening cylinder 8, and a feed hopper 3 is connected to the feed pipe 2. The dust removal mechanism includes a dust suction hood 4 connected to the top of the feed hopper 3 through a connecting rod, a dust removal pipe 5 connected to the top of the dust suction hood 4, and a dust suction pipe 6 connected to one side of the top of the outer cylinder one 7. The dust removal pipe 5 is connected to the dust suction pipe 6, and the dust suction pipe 6 is externally connected to a vacuum cleaner. The vacuum cleaner can suck away the dust at the feed hopper 3 and inside the impurity separation cylinder, and can ensure the cleanliness of the tea during the subsequent grading and screening.

[0022] The multi-stage screening cylinder 10 is composed of a first-stage screening cylinder 11, a second-stage screening cylinder 13, and a third-stage screening cylinder 14 that are connected in sequence. Annular baffle plates 12 are respectively sleeved between the second-stage screening cylinder 13 and the first-stage screening cylinder 11 and the third-stage screening cylinder 14. The outer peripheral surface of the annular baffle plate 12 is fixedly connected to the second outer cylinder 9, and the annular baffle plate 12 is rotatably connected to the impurity screening cylinder 8. The annular baffle plate 12 divides the interior of the second outer cylinder 9 into multiple chambers to prevent the tea leaves after multi-stage screening from being mixed. At the bottom of the second outer cylinder 9 corresponding to the first-stage screening cylinder 11, the second-stage screening cylinder 13, and the third-stage screening cylinder 14, a first-stage discharge pipe 20, a second-stage discharge pipe 19, and a third-stage discharge pipe 18 are respectively connected. The first-stage discharge pipe 20 and the second-stage discharge pipe 19 are respectively arranged near the annular baffle plate 12, and the third-stage discharge pipe 18 is arranged at the lowest end of the bottom of the second outer cylinder 9 to facilitate the discharge of the screened tea leaves. After the tea leaves pass through the first-stage screening cylinder, the second-stage screening cylinder 13, and the third-stage screening cylinder in sequence, tea leaves of different grades and sizes can be screened out at one time, thereby improving the screening efficiency.

[0023] When the present utility model is in use, the tea leaves to be screened are fed into the impurity screening cylinder 8 through the feed hopper 3. Then, the drive motor 15 is started to make the gear 16 engage with the gear ring 17 to rotate, thereby driving the impurity screening cylinder 8 to rotate, and preliminarily screening out the impurities in the tea leaves. The screened impurities are discharged and collected through the dust outlet pipe 21. The tea leaves after preliminary screening then enter the multi-stage screening cylinder 10. Driven by the drive motor 15, the multi-stage screening cylinder 10 rotates, enabling the tea leaves to be screened step by step along the first-stage screening cylinder 11, the second-stage screening cylinder 13, and the third-stage screening cylinder. The tea leaves in the cylinder after screening are discharged from the discharge port along the slope of the cylinder body. The tea leaves screened out at each stage are respectively discharged and collected from the first-stage discharge pipe 20, the second-stage discharge pipe 19, and the third-stage discharge pipe 18.

[0024] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A tea grading and screening device, characterized in that, It includes an impurity screening cylinder and a multi-stage screening cylinder. The impurity screening cylinder and the multi-stage screening cylinder are respectively rotatably arranged in outer cylinder one and outer cylinder two. The discharge port of the impurity screening cylinder is rotatably connected to the feed port of the multi-stage screening cylinder. Tooth rings are respectively fixedly sleeved at the feed port of the impurity screening cylinder and the discharge port of the multi-stage screening cylinder. Drive motors are respectively arranged at one end of the impurity screening cylinder and the multi-stage screening cylinder. Gears meshing with their respective tooth rings are respectively connected to the output ends of each drive motor; A dust outlet pipe is connected to one side of the bottom of the impurity screening cylinder. A dust removal mechanism is connected to the feed port of the impurity screening cylinder and the top of the cylinder body; The multi-stage screening cylinder is composed of a first-stage screening cylinder, a second-stage screening cylinder, and a third-stage screening cylinder connected in sequence. Annular baffle plates are respectively sleeved between the second-stage screening cylinder and the first-stage screening cylinder and the third-stage screening cylinder. The outer peripheral surface of the annular baffle plate is fixedly connected to outer cylinder two. And the annular baffle plate is rotatably connected to the impurity screening cylinder. A first-stage discharge pipe, a second-stage discharge pipe, and a third-stage discharge pipe are respectively connected to the bottom of outer cylinder two corresponding to the first-stage screening cylinder, the second-stage screening cylinder, and the third-stage screening cylinder.

2. The tea grading and screening device according to claim 1, wherein: A feed pipe is connected to the feed port of the impurity screening cylinder. A feed hopper is connected to the feed pipe. The dust removal mechanism includes a dust suction hood connected to the top of the feed hopper through a connecting rod, a dust removal pipe connected to the top of the dust suction hood, and a dust suction pipe connected to one side of the top of outer cylinder one. The dust removal pipe is connected to the dust suction pipe. And the dust suction pipe is externally connected to a vacuum cleaner.

3. The tea grading and screening device according to claim 1, characterized in that: Outer cylinder one and outer cylinder two are both inclined in the same direction, and their inclination angles are the same. The impurity screening cylinder and the multi-stage screening cylinder are respectively arranged in the corresponding outer cylinder one and outer cylinder two at the same inclination angle.

4. The tea grading and screening device according to claim 1, wherein: A support frame is arranged below the impurity screening cylinder and the multi-stage screening cylinder. The impurity screening cylinder and the multi-stage screening cylinder are respectively fixed on the support frame through support legs.

5. The tea grading and screening device according to claim 1, characterized in that: The screening mesh holes on the first-stage screening cylinder, the second-stage screening cylinder, and the third-stage screening cylinder gradually decrease.

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