A tea leaf impurity separating device

Abstract

The utility model relates to tea processing technical field especially is a kind of tea impurity separation device, including frame, in the utility model, by designing a kind of tea impurity separation device, utilize motor-driven rotary vane continuously overturn in discharging box, scatter tea leaves and push even discharging, solve the jam problem caused by tea accumulation in traditional device, cooperate with the high-frequency vibration of vibration motor, ensure that tea is fully dispersed on screen surface, utilize the second screen 40 ° of inclination angle difference design, first screen 30 °, combined double-layer screen structure realizes stepped separation, second screen is screened out large leaf blade and coarse impurity preferentially, first screen further separates fine impurity and dust, sieve under the thing falls into impurity receiving box, through magnet adsorption of iron filings, screw metal foreign matter in tea leaf, avoid the omission risk of traditional manual picking, significantly improve tea safety, it is convenient to separate operation to tea impurity.

Description

Technical Field

[0001] This utility model relates to the field of tea processing technology, and in particular to a tea impurity separation device. Background Technology

[0002] Tea processing refers to the process of processing freshly picked tea leaves into tea products that can be brewed or further processed through a series of techniques. Its core objective is to preserve the natural flavor and nutrients of tea, while forming the unique qualities of different types of tea through fermentation, oxidation, drying and other means. As a traditional agricultural product in my country, the separation of impurities during the processing of tea is a key link in ensuring the quality of tea.

[0003] Modern tea garden management widely uses various small mechanical equipment, such as pruning machines for pruning tea trees, cultivators for deep soil cultivation, and sprayers for pest and disease control. During long-term, high-intensity use, the metal parts of these machines (such as blades, gears, bearings, screws, and chains) will produce metal fragments or loosen and fall off due to friction, vibration, and fatigue. Although famous and high-quality teas mostly rely on manual picking, bulk teas (such as raw materials used to make tea powder and tea bags) are generally picked mechanically. The "picking head" of the tea picking machine contains a large number of high-speed moving blades. Its working principle is similar to that of hair clippers. It cuts the tender tea shoots from the branches through shearing force. Similar to pruning machines, the blades of the tea picking machine will continuously produce tiny metal particles in the repeated shearing and friction with the tea tree branches. These particles directly adhere to the surface of the freshly picked leaves, becoming the initial source of metal contamination.

[0004] The initial processing of tea includes withering, fixation, rolling, and drying. Almost every step relies on machinery, which is the main source of metal impurities. The inner wall, guide plates, and lifting plates of the drum-type fixation machine generate metal wear particles under high temperature and constant friction with the tea leaves. This is especially serious when the equipment is old or not maintained in time. The rolling drum, rolling plate, and ribs of the rolling machine are subjected to huge pressure and friction when squeezing and kneading the tea leaves, making them a major source of metal debris. Wear or damage to these parts can directly mix iron filings and alloy particles into the tea leaves. These machines use rapid rotation or vibration to break up clumps of tea leaves or arrange the tea leaves. Their high-speed moving parts (such as beating rods and vibrating screens) will also wear down, introducing metal particles. Under long-term high-temperature operation, the conveyor belts, chain plates, radiators, and other metal parts of the dryer may produce rust and metal oxide powder due to thermal expansion and contraction and oxidation, which can then contaminate the tea leaves through airflow or direct contact.

[0005] Existing tea impurity separation devices mostly use a single screen vibration or air separation method. The mechanical vibration causes the tea and impurities to separate into layers due to differences in particle size, and then separation is achieved by using sieve holes or airflow. Although such devices can remove some large particles of impurities, they have limited effect on breaking up clumps of tea leaves and are difficult to effectively separate small metallic impurities, resulting in insufficient purity of tea leaves, which affects subsequent processing and product quality.

[0006] To address the above problems, a tea impurity separation device needs to be designed to overcome them. Utility Model Content

[0007] The main purpose of this utility model is to provide a tea impurity separation device, which can effectively solve the problems in the background art.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A tea impurity separation device includes a frame, a feeding box fixedly installed on the top of the frame, a motor fixedly installed at one upper end of the feeding box, a first gear fixedly connected to the output end of the motor via a coupling, a rotating rod rotatably connected inside the feeding box via a bearing, a rotating blade fixedly installed around the outer wall of the rotating rod, a second gear fixedly connected to one end of the rotating rod through the feeding box, a transmission belt drivingly connecting the first gear and the second gear, a second screen fixedly installed on the upper side of the frame, dampers fixedly connected to both ends of the second screen, and a connecting plate fixedly installed on the frame near the damper end.

[0010] As a preferred embodiment of this utility model, the connecting plate is fixedly connected to the damper, and a second tea leaf discharge plate is fixedly installed on the frame near the other end of the second screen.

[0011] As a preferred embodiment of this utility model, the first screen is fixedly installed on the frame below the second screen.

[0012] As a preferred embodiment of this utility model, a magnet is fixedly installed at the bottom of the first screen.

[0013] As a preferred embodiment of this utility model, a first tea leaf discharge plate is fixedly installed on the frame near one end of the first screen.

[0014] As a preferred embodiment of this utility model, an impurity receiving box is placed on the lower side inside the frame.

[0015] As a preferred embodiment of this utility model, a vibration motor is fixedly installed on the outer wall of the frame.

[0016] As a preferred embodiment of this utility model, the first screen and the second screen are installed at angles of 30 degrees and 40 degrees respectively, the number of magnets installed is three sets, and the number of dampers is eight sets.

[0017] Beneficial effects

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In this utility model, a tea impurity separation device is designed. The rotating blade driven by the motor continuously rotates in the feeding box, breaking up the clumps of tea leaves and pushing them to be fed evenly. This solves the problem of clogging caused by the accumulation of tea leaves in traditional devices. Combined with the high-frequency vibration of the vibrating motor, it ensures that the tea leaves are fully dispersed on the screen surface.

[0020] 2. In this utility model, a tea impurity separation device is designed. By utilizing the differential tilt angle design (40° for the second screen and 30° for the first screen) and combining it with a double-layer screen structure, a stepped separation is achieved. The second screen preferentially removes large leaves and coarse impurities, while the first screen further separates fine impurities and powder. The screened material falls into the impurity receiving box, where iron filings and screws are attracted by magnets. This avoids the risk of omissions in traditional manual picking, significantly improves the safety of tea, and facilitates the separation of tea impurities. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the frame and the feeding box of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the first and second screens of this utility model;

[0023] Figure 3 This is a schematic diagram of the frame structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the rotating rod and rotating blade of this utility model.

[0025] In the diagram: 1. Frame; 2. Vibrating motor; 3. Impurity receiving box; 4. First tea leaf discharge plate; 5. First screen; 6. Magnet; 7. Connecting plate; 8. Second screen; 9. Second tea leaf discharge plate; 10. Feed box; 11. Damper; 12. Motor; 13. First gear; 14. Transmission belt; 15. Second gear; 16. Rotating rod; 17. Rotating blade. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0027] To facilitate understanding of this utility model, a more comprehensive description of it will be given below with reference to the accompanying drawings, and several embodiments of this utility model will be provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and comprehensive. In order to make the technical means, creative features, and achieved purposes and effects of this utility model easier to understand, this utility model will be further described below in conjunction with specific embodiments.

[0028] like Figure 1-4 As shown, a tea impurity separation device includes a frame 1. A feeding box 10 is fixedly installed on the top of the frame 1. A motor 12 is fixedly installed on one upper end of the feeding box 10. The output end of the motor 12 is fixedly connected to a first gear 13 via a coupling. A rotating rod 16 is rotatably connected inside the feeding box 10 via a bearing. A rotating blade 17 is fixedly installed around the outer wall of the rotating rod 16. One end of the rotating rod 16 passes through the feeding box 10 and is fixedly connected to a second gear 15. A transmission toothed belt 14 is drivingly connected to the first gear 13 and the second gear 15. A second screen 8 is fixedly installed on the upper side of the frame 1. Dampers 11 are fixedly connected to both ends of the second screen 8. A connecting plate 7 is fixedly installed on the frame 1 near the damper 11.

[0029] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 4 As shown, the connecting plate 7 is fixedly connected to the damper 11. The second tea leaf discharge plate 9 is fixedly installed on the frame 1 near the other end of the second screen 8. The first screen 5 is fixedly installed on the frame 1 below the second screen 8. The bottom of the first screen 5 is fixedly installed with a magnet 6. The first tea leaf discharge plate 4 is fixedly installed on the frame 1 near one end of the first screen 5. An impurity receiving box 3 is placed inside the lower side of the frame 1. A vibration motor 2 is fixedly installed on the outer wall of the frame 1. The installation angles of the first screen 5 and the second screen 8 are 30 degrees and 40 degrees, respectively. There are three sets of magnets 6 and eight sets of dampers 11.

[0030] Among them, the feeding box 10 is a top feeding structure with a smooth inner wall to reduce tea residue. The top of the box is equipped with a feeding port to facilitate docking with external conveyor belts or hopper equipment to achieve uniform feeding. Inside the box, there is a rotating rod 16 and a rotating blade 17, which are driven by a motor 12 to disperse and initially separate the tea leaves.

[0031] Among them, the rotating rod 16 is a long shaft structure, which is installed inside the feeding box 10 through bearings. Multiple rotating blades 17 are evenly welded on the outer wall. The rotating blades 17 are arranged in a spiral shape, and centrifugal force is generated when rotating, which evenly throws the tea leaves onto the screen surface.

[0032] The second screen 8 and the first screen 5 are made of stainless steel woven mesh, and the mesh size is customized according to the tea variety. For example, the second screen 8 has a larger mesh and is used for the initial separation of large leaves; the first screen 5 has a smaller mesh and is used for fine sieving. The first screen 5 and the second screen 8 are installed at an angle and high-frequency vibration is achieved by the vibration motor 2 to promote the separation of tea leaves from impurities.

[0033] Among them, magnet 6 is a high-strength neodymium iron boron permanent magnet, which is installed below the first screen 5 to form a magnetic field area. When tea leaves pass through, metal impurities such as iron filings and iron nails are attracted to the surface of magnet 6, which can be cleaned periodically.

[0034] The working process of this utility model is as follows: Using the tea impurity separation device designed in this scheme, during operation, the operator checks the power supply of the equipment, turns on the power switches of motor 12 and the vibration motor 2 on the outer wall of the frame 1, and then puts the tea leaves into the feeding box 10. Motor 12 drives the first gear 13 to rotate, which in turn drives the second gear 15 to rotate via the transmission belt 14. The rotation of the second gear 15 drives the rotating rod 16 to rotate, which in turn drives the rotating blade 17 on the outer wall to rotate, thereby turning the tea leaves inside the feeding box 10 and preventing them from falling into the water. To prevent clogging and facilitate the breaking up of clumps of tea leaves, the tea leaves fall sequentially onto the second screen 8. The second screen 8 performs the initial separation, and leaves that cannot pass through it are discharged through the second tea leaf discharge plate 9. Tea leaves smaller than the mesh size of the second screen 8, along with impurities, fall onto the first screen 5. The first screen 5 sifts the impurities and powder into the impurity receiving box 3 for collection, while metallic impurities are attracted by the magnet 6. The separated tea leaves are discharged through the first tea leaf discharge plate 4, thus facilitating the separation of tea leaves from impurities.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tea impurity separation device, comprising a frame (1), characterized in that: A feeding box (10) is fixedly installed on the top of the frame (1). A motor (12) is fixedly installed on one upper end of the feeding box (10). The output end of the motor (12) is fixedly connected to a first gear (13) through a coupling. A rotating rod (16) is rotatably connected inside the feeding box (10) through a bearing. A rotating blade (17) is fixedly installed around the outer wall of the rotating rod (16). One end of the rotating rod (16) passes through the feeding box (10) and is fixedly connected to a second gear (15). A transmission belt (14) is drivingly connected to the first gear (13) and the second gear (15). A second screen (8) is fixedly installed on the upper side of the frame (1). A damper (11) is fixedly connected to both ends of the second screen (8). A connecting plate (7) is fixedly installed on the frame (1) near the damper (11).

2. The tea impurity separation device according to claim 1, characterized in that: The connecting plate (7) is fixedly connected to the damper (11), and the second tea leaf discharge plate (9) is fixedly installed on the frame (1) near the other end of the second screen (8).

3. The tea impurity separation device according to claim 2, characterized in that: The first screen (5) is fixedly installed on the frame (1) below the second screen (8).

4. The tea impurity separation device according to claim 3, characterized in that: A magnet (6) is fixedly installed at the bottom of the first screen (5).

5. The tea impurity separation device according to claim 4, characterized in that: The first tea leaf discharge plate (4) is fixedly installed on the frame (1) near one end of the first screen (5).

6. The tea impurity separation device according to claim 5, characterized in that: An impurity receiving box (3) is placed on the lower side inside the frame (1).

7. The tea impurity separation device according to claim 5, characterized in that: A vibration motor (2) is fixedly installed on the outer wall of the frame (1).

8. The tea impurity separation device according to claim 5, characterized in that: The first screen (5) and the second screen (8) are installed at angles of 30 degrees and 40 degrees respectively. The number of magnets (6) is three, and the number of dampers (11) is eight.

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