Airflow screening equipment for tea leaf impurity removal
By designing structures such as inclined baffle hoppers, impurity blowing holes, and inclined blowing pipes in the airflow screening equipment, the problems of tea leaves getting stuck and mechanical damage are solved, achieving efficient separation of tea leaves and impurities and smooth falling, thus improving the impurity removal effect and quality of tea leaves.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-03-17
AI Technical Summary
In existing airflow screening equipment, tea leaves are prone to getting stuck in the feed hood and are difficult to fall during the tea impurity removal process. Furthermore, the mechanical feeding components may damage the tea leaves, affecting their appearance and quality.
The design incorporates a tilted baffle hopper, impurity blowing holes, a front drop hood, an air outlet hood, and side air pipes. These components work in conjunction with a blower to generate airflow, ensuring smooth flow of tea leaves and effective separation of impurities. The tilted air pipes also promote the falling of tea leaves, preventing mechanical damage.
It achieves efficient separation of tea leaves from impurities, ensures smooth tea leaf flow, avoids mechanical damage, and improves impurity removal efficiency and tea quality.
Smart Images
Figure CN223996627U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of tea impurity removal and screening equipment, specifically, to an airflow screening device for removing impurities from tea. Background Technology
[0002] In the tea processing process, impurity removal is a crucial step. Impurities mixed in with tea not only affect the appearance of the tea but may also have an adverse impact on its taste and aroma. Traditional methods of tea impurity removal mostly rely on manual picking or the use of simple mechanical sieving equipment. However, these methods suffer from problems such as low efficiency, high labor intensity, and poor impurity removal effect. With the advancement of science and technology and the development of automation technology, airflow screening equipment has been gradually applied to the field of tea impurity removal. By utilizing the force of airflow to separate tea leaves from impurities, the efficiency of impurity removal and the quality of tea have been improved.
[0003] While existing airflow sorting equipment has achieved some success in removing impurities from tea leaves, it still has some shortcomings. Because airflow sorting equipment typically has a feed hood at the top, and tea leaves are fed through this hood, traditional equipment lacks a component that allows the airflow to pull the tea leaves down from the feed hood. This results in a significant amount of tea leaves getting stuck and unable to fall. When using mechanical feeding components, the rigid mechanical parts can compress and damage the tea leaves, affecting their appearance and further impacting the processing results. Therefore, we propose an airflow sorting device for removing impurities from tea leaves. Utility Model Content
[0004] The purpose of this invention is to provide an airflow screening device for removing impurities from tea leaves, thereby addressing the deficiencies mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] An airflow screening device for removing impurities from tea leaves includes a feeding box. An inclined baffle hopper is fixedly installed on the front side plate of the feeding box. An impurity blowing hole connected to the outside is provided on the front side plate of the feeding box. The impurity blowing hole is located above the inclined baffle hopper. A feeding hopper is fixedly installed on the top surface of the feeding box. A feeding hood is fixedly installed on the top of the feeding hopper. A fan is provided on the rear side of the feeding box. An air outlet pipe is fixedly installed at the air outlet end of the fan. An air outlet hood is fixedly installed at the end of the air outlet pipe. The air outlet hood is fixedly installed on the rear side wall of the feeding box. An air outlet hole is provided on the front side plate of the air outlet hood. The air outlet hole is located directly behind the impurity blowing hole. A side air pipe is fixedly installed on the air outlet pipe. The side air pipe extends from the feeding hood into the feeding hopper.
[0007] Preferably, the front sidewall of the inclined baffle is inclined downward at 45° to 60°, and the air outlet is arranged along the length of the air outlet hood.
[0008] Preferably, a front discharge hood that communicates with the impurity blowing hole is fixedly installed on the top surface of the inclined baffle hopper, and a first inclined surface is provided on the bottom wall of the front discharge hood.
[0009] Preferably, the rear end of the front material discharge hood is fixedly installed on the wall of the impurity blowing hole, and the first inclined surface is set to be inclined downward at 30°~60°.
[0010] Preferably, a support frame is fixedly installed on the rear side of the feeding box, and a support leg is fixedly installed on the bottom surface of the front feeding hood.
[0011] Preferably, an upper material guide block is fixedly installed on the top surface of the air outlet hood, and the upper material guide block is fixedly installed on the rear side wall of the unloading box.
[0012] Preferably, a second inclined surface is provided on the top surface of the upper feed block, and the second inclined surface is inclined downward at 45°~60°.
[0013] Preferably, a plurality of inclined air pipes are fixedly installed on the end of the side air pipe that extends into the feed hood, and the inclined air pipes are set to be inclined downward at 45°~60°.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. This utility model achieves efficient separation of tea leaves and impurities through the setting of inclined baffle hopper, impurity blowing hole, front material discharge hood, air outlet hood and side air pipe, and is equipped with a fan to generate airflow. The impurity blowing hole, together with the air outlet hood, blows the impurities out of the equipment. The design of the front material discharge hood and the upper material guide block further ensures the smooth flow of tea leaves and the effective removal of impurities, achieving the effect of airflow screening of tea leaves.
[0016] 2. This utility model, through the setting of side air pipe and inclined air pipe, since the inclined air pipe is arranged inside the feeding hood, when the gas is blown out from the end of the side air pipe and the inclined air pipe, it can promote the tea leaves inside the feeding hood to fall down, making the feeding smoother. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is one of the partial structural schematic diagrams of this utility model;
[0019] Figure 3This is the second partial structural schematic diagram of the present utility model;
[0020] Figure 4 This is the third partial structural schematic diagram of this utility model;
[0021] The meanings of the labels in the diagram are as follows:
[0022] 1. Feeding box; 10. Inclined baffle hopper; 11. Impurity blowout hole; 12. Front discharge hood; 121. First inclined surface; 13. Feeding hopper; 14. Feeding hood; 15. Support frame; 16. Support leg;
[0023] 2. Fan; 20. Air outlet pipe; 21. Air outlet hood; 211. Air outlet hole; 22. Upper feed block; 221. Second inclined surface; 23. Side air pipe; 24. Inclined blower pipe. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figures 1-4 This utility model provides a technical solution: an airflow screening device for removing impurities from tea leaves, including a feeding box 1, an inclined baffle 10 fixedly installed on the front side plate of the feeding box 1, and an impurity blowing hole 11 connected to the outside on the front side plate of the feeding box 1. The impurity blowing hole 11 is located above the inclined baffle 10. The inclined baffle 10 is used to block all the tea leaves from being blown out from the impurity blowing hole 11, ensuring that when the air is blown, the tea leaves are blown towards the inclined baffle 10 and can continue to fall down along the inclined baffle 10, while the impurities are blown out from the impurity blowing hole 11.
[0026] Specifically, a feeding hopper 13 is fixedly installed on the top surface of the feeding box 1, and a feeding cover 14 is fixedly installed on the top of the feeding hopper 13 for feeding operation; a fan 2 is provided on the rear side of the feeding box 1, an air outlet pipe 20 is fixedly installed at the air outlet end of the fan 2, and an air outlet cover 21 is fixedly installed at the end of the air outlet pipe 20. The air outlet cover 21 is fixedly installed on the rear side wall of the feeding box 1, and an air outlet hole 211 is provided on the front side plate of the air outlet cover 21. The air outlet hole 211 is located directly behind the impurity blowing hole 11, so as to blow air towards the impurity blowing hole 11 and blow the impurities outward along the impurity blowing hole 11.
[0027] Specifically, a side air pipe 23 is fixedly installed on the air outlet pipe 20. The side air pipe 23 extends from the feed hood 14 into the feed hopper 13. The air volume of the side air pipe 23 is less than the air volume of the air outlet 211, so that the air blown out from the end of the side air pipe 23 can blow the tea leaves that have fallen into the feed hood 14 downwards, making it easier for the tea leaves to fall downwards.
[0028] In this embodiment, the front side wall of the inclined baffle 10 is inclined downward at 45°~60°, so that the tea leaves falling on the inner wall of the inclined baffle 10 fall down the bottom wall of the inclined baffle 10 more smoothly; the air outlet 211 is set along the length of the air outlet hood 21 to realize the horizontal blowing to remove impurities.
[0029] Specifically, a front discharge hood 12 connected to the impurity blowing hole 11 is fixedly installed on the top surface of the inclined baffle hopper 10. A first inclined surface 121 is provided on the bottom wall of the front discharge hood 12. The rear end of the front discharge hood 12 is fixedly installed on the hole wall of the impurity blowing hole 11. The first inclined surface 121 is set at a downward inclination of 30°~60°, so that the blown impurities can be smoothly discharged from the equipment along the first inclined surface 121, avoiding the accumulation of impurities inside the equipment and ensuring the continuous and stable operation of the equipment.
[0030] Furthermore, a support frame 15 is fixedly installed on the rear side of the feeding box 1, and a support leg 16 is fixedly installed on the bottom surface of the front feeding cover 12, which enhances the structural stability of the equipment and enables the equipment to remain stable during operation.
[0031] In addition, an upper feeding block 22 is fixedly installed on the top surface of the air outlet hood 21. The upper feeding block 22 is fixedly installed on the rear side wall of the feeding box 1, so that the tea leaves can enter the feeding box 1 more smoothly along the upper feeding block 22 under the action of airflow.
[0032] It is worth noting that a second inclined surface 221 is provided on the top surface of the upper feed block 22. The second inclined surface 221 is set at a downward inclination of 45°~60°, which makes it easier for the tea leaves to fall down along the second inclined surface 221.
[0033] It is worth noting that multiple inclined air pipes 24 are fixedly installed on the end of the side air pipe 23 that extends into the feed hood 14. The inclined air pipes 24 are set at a downward inclination of 45° to 60°, so that when the air is blown out from the inclined air pipes 24, it can promote the tea leaves inside the feed hood 14 to fall down.
[0034] When using the airflow screening device for removing impurities from tea leaves, the tea leaves to be removed are first poured into the feed hopper 13 through the feed hood 14. The blower 2 is then started, and the blower 2 delivers airflow to the air outlet hood 21 through the air outlet pipe 20. The air outlet holes 211 on the air outlet hood 21 blow air towards the impurity blowing hole 11. Under the action of the airflow, the impurities are blown out of the device through the impurity blowing hole 11, fall into the front discharge hood 12, and are smoothly discharged along the first inclined surface 121. The tea leaves after impurity removal fall normally down the feed box 1.
[0035] At the same time, the side air pipe 23 introduces part of the airflow into the feed hopper 13, and blows air downward through the inclined blow pipe 24 and the end of the side air pipe 23 to promote the tea leaves in the feed hood 14 to fall smoothly into the feed box 1 for impurity removal.
[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A pneumatic screening device for removing impurities from tea leaves, comprising a hopper (1), characterized in that: The front side plate body of the blanking box (1) is fixedly installed with an inclined material blocking hopper (10), the front side plate body of the blanking box (1) is provided with an impurity blowing hole (11) in communication with the outside, the impurity blowing hole (11) is located above the inclined material blocking hopper (10), the top surface of the blanking box (1) is fixedly installed with a feeding hopper (13), the top end of the feeding hopper (13) is fixedly installed with a feeding cover (14), the rear side of the blanking box (1) is provided with a fan (2), the air outlet end of the fan (2) is fixedly installed with an air outlet pipe (20), the end of the air outlet pipe (20) is fixedly installed with an air outlet cover (21), the air outlet cover (21) is fixedly installed on the rear side wall of the blanking box (1), the front side plate body of the air outlet cover (21) is provided with an air outlet hole (211), the air outlet hole (211) is located directly behind the impurity blowing hole (11), the side air pipe (23) is fixedly installed on the air outlet pipe (20), and the side air pipe (23) extends into the feeding hopper (13) from the feeding cover (14).
2. The airflow screening apparatus for removing impurities from tea leaves according to claim 1, characterized by: The front side wall of the inclined material blocking hopper (10) is inclined downward by 45°-60°, and the air outlet hole (211) is arranged along the length direction of the air outlet cover (21).
3. The air stream separating apparatus for removing impurities from tea leaves as claimed in claim 1 wherein: The top surface of the inclined material blocking hopper (10) is fixedly installed with a front side material falling cover (12) in communication with the impurity blowing hole (11), and the bottom wall of the front side material falling cover (12) is provided with a first inclined surface (121).
4. The air stream separating apparatus for removing foreign materials from tea leaves according to claim 3, wherein: The rear end of the front side material falling cover (12) is fixedly installed on the hole wall of the impurity blowing hole (11), and the first inclined surface (121) is inclined downward by 30°-60°.
5. The air stream separating apparatus for removing foreign materials from tea leaves according to claim 4, wherein: The rear side of the blanking box (1) is fixedly installed with a support frame (15), and the bottom surface of the front side material falling cover (12) is fixedly installed with a support leg (16).
6. The air flow sieving apparatus for removing impurities from tea leaves as claimed in claim 1 wherein: The top surface of the air outlet cover (21) is fixedly installed with an upper material guiding block (22), and the upper material guiding block (22) is fixedly installed on the rear side wall of the blanking box (1).
7. The air stream separating apparatus for removing foreign materials from tea leaves according to claim 6, wherein: The top surface of the upper material guiding block (22) is provided with a second inclined surface (221), and the second inclined surface (221) is inclined downward by 45°-60°.
8. The air stream separating apparatus for removing impurities from tea leaves as claimed in claim 1 wherein: The end pipe body of the side air pipe (23) extending into the feeding cover (14) is fixedly installed with a plurality of inclined air blowing pipes (24), and the inclined air blowing pipes (24) are inclined downward by 45°-60°.