A device for separating tea dust from tea leaves

Abstract

This utility model discloses a tea dust and tea leaf separation device, relating to the field of tea processing technology. It includes a base, a box body fixedly mounted on top of the base, a feed inlet on the top of the box body, a first through groove on each side of the box body with a height difference between them, and a second through groove on one side of the box body, located below the higher first through groove. A separation mechanism includes a fixed plate, a screening frame, and a drive motor. The fixed plate is fixedly installed on one side of the box body, located below the lower first through groove. The screening frame passes through the two first through grooves at an angle. When separating tea dust and tea leaves, this utility model prevents tea leaves from clogging the screening frame and affecting normal operation. The slag discharge frame effectively discharges tea dregs and tea dust, preventing excessive accumulation of tea dregs and tea dust inside the box and ensuring high overall practicality.

Description

Technical Field

[0001] This utility model relates to the field of tea processing technology, and in particular to a device for separating tea dust from tea leaves. Background Technology

[0002] Tea is a beloved beverage in Southeast Asian countries, especially among the Chinese community. It is also widely enjoyed in my country, with a wide variety of tea products available on the market. All teas are made from the fresh leaves, buds, and branches of the tea plant. Different processing methods result in different types of tea. The tea processing generally consists of primary processing and refining. Primary processing typically includes fixing (or steaming), rolling, and drying (sun-drying or oven-drying). Refining typically includes sieving, shaking, sorting, and drying.

[0003] During processing, storage, and transportation, tea leaves become fragile and easily broken due to moisture evaporation. These broken tea leaves can mix with whole tea leaves, affecting the quality of the tea. Therefore, it is necessary to separate these tea leaves from the tea leaves, which requires a tea leaf separation device, as shown below.

[0004] A search revealed patent CN219210627U, which discloses a tea-to-tea-dust separation device, belonging to the technical field of tea production equipment. This device includes a housing with an inlet, a filter plate inside, and a vibrating screen inside the housing. A vibrating device is installed on the housing to drive the vibrating screen. Tea leaves are fed into the housing through the inlet, where the filter plate performs a first filtration. The filtered tea leaves fall onto the vibrating screen, while the filtered tea dust falls into the housing. The vibrating device drives the vibrating screen to vibrate, performing a second filtration. The filtered tea leaves are carried out of the housing through the outlet, while the tea dust falls into the housing and is conveyed out by a conveying device. This eliminates the need for manual tea sifting, improving sorting efficiency and reducing labor costs.

[0005] However, the aforementioned tea and tea dust separation device still has the following areas for improvement. For example, during operation, after the tea leaves enter the chamber, due to the fixed design of the filter plate, a large amount of tea leaves easily accumulates on the filter plate and blocks the outlet on one side of the filter plate, preventing it from being discharged onto the vibrating screen. This affects its normal operation and requires frequent manual unblocking. Furthermore, the structure of using an auger rod in conjunction with a drive motor to discharge tea dust is difficult to achieve in actual operation, as the tea dust falls in various locations inside the chamber, and the auger rod clearly cannot discharge the tea dust from all locations, resulting in a large accumulation of tea dust inside the chamber and affecting the normal operation of the device. Therefore, a tea dust and tea leaf separation device is urgently needed to solve the above technical problems. Utility Model Content

[0006] This utility model discloses a tea dust and tea leaf separation device. It includes a housing and a separation mechanism. During operation, tea leaves are added to the housing through the feed inlet. After entering the housing, the tea leaves fall onto the separation mechanism. The drive motor in the separation mechanism vibrates the screening frame and the slag discharge frame, achieving automatic screening and separation of the tea leaves. No manual discharge is required; the entire process is automatic, saving time and labor, and is highly efficient. Furthermore, tea leaves will not clog the screening frame, thus preventing blockages and ensuring normal operation. The slag discharge frame effectively removes tea leaves and dust, preventing excessive accumulation of tea leaves and dust inside the housing. In summary, this device solves the problems described in the background art.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model discloses a tea dust and tea leaf separation device, including a base, a box body fixedly mounted on the top of the base, a feed inlet on the top of the box body, a first through groove on both sides of the box body, a height difference between the two first through grooves, and a second through groove on one side of the box body, the second through groove being located below the higher first through groove.

[0009] The separation mechanism includes a fixed plate, a screening frame, and a drive motor. The fixed plate is fixedly installed on one side of the housing and is located below the lower first through slot. The screening frame passes through the two first through slots at an angle. The bottom of the screening frame is hinged to the top of the fixed plate via a hinge assembly. A screening hole group is opened on the inner bottom surface of the screening frame and is located inside the housing. An extension plate is fixedly connected to the higher end of the screening frame. Multiple L-shaped connecting plates are fixedly connected to the bottom of the screening frame. A slag discharge frame is fixedly connected to the top of the L-shaped turning surface of the connecting plate. The slag discharge frame is designed at an angle, and the inclination direction of the slag discharge frame is opposite to that of the screening frame. The lower end of the slag discharge frame moves through the second through slot. The drive motor is fixedly installed on one side of the housing via an mounting component. An eccentric wheel is provided at the output end of the drive motor. A connecting rod is rotatably connected to the eccentric wheel. The top of the connecting rod is hinged to the bottom of the extension plate via a hinge assembly.

[0010] Furthermore, the top and lower end of the screening frame are both open, and the top and lower end of the slag discharge frame are both open, with the top opening size of the slag discharge frame being larger than the overall size of the screening hole assembly.

[0011] Furthermore, the screening frame, connecting plate, and slag discharge frame are all made of aluminum alloy, and the connecting plate is fixedly connected to the screening frame and the slag discharge frame by welding.

[0012] Furthermore, the front and rear sides of the screening frame and the slag discharge frame are close to but do not contact the inner wall of the box, and the distance between the front and rear sides of the screening frame and the slag discharge frame and the box is 1mm-2mm.

[0013] Furthermore, a cleaning port is provided at the bottom of the box body on the side away from the second through groove, and a cleaning door is hinged to the cleaning port.

[0014] Furthermore, the inner bottom surface of the box is inclined towards the cleaning port, and the inner bottom surface of the box is a smooth surface.

[0015] Furthermore, a mounting base is provided on one side of the housing, and a dust collection box and an exhaust fan are fixedly installed on the top of the mounting base. The exhaust end of the exhaust fan is connected to one side of the dust collection box, and a dust collection pipe is connected to the other side of the dust collection box. The dust collection pipe passes through the top of the housing, and a dust collection hood is fixedly connected to the bottom end of the dust collection pipe. The dust collection hood is located above the screening frame. An intercepting filter screen is installed inside the dust collection box. A door is hinged to one side of the dust collection box, and the door is sealed to the dust collection box when closed.

[0016] The present invention has the following advantages over the prior art:

[0017] 1. This technical solution, by setting up a box and a separation mechanism, allows tea leaves to be added into the box through the feed inlet during operation. After entering the box, the tea leaves fall onto the separation mechanism. The drive motor in the separation mechanism can drive the screening frame and the slag discharge frame to vibrate, thereby achieving the purpose of screening and automatic discharge. No manual discharge or slag removal is required. The entire process of automatic discharge and slag removal is time-saving, labor-saving, and highly efficient. Moreover, the tea leaves will not clog the inside of the screening frame and affect normal operation. The slag discharge frame can also effectively discharge tea leaves and tea dust, and it is not easy for tea leaves and tea dust to accumulate in large quantities inside the box and affect normal operation. Overall, it has high practicality.

[0018] 2. This technical solution incorporates a dust collection box and an exhaust fan. During operation, the exhaust fan, in conjunction with the dust collection box and dust collection pipe, generates negative pressure suction at the dust collection hood. This suction draws tea dust generated during the vibration of the sieving frame into the dust collection box, where it is trapped by an intercepting filter. Clean air is then discharged through the exhaust fan's outlet. This effectively prevents large amounts of tea dust from drifting into the surrounding air, polluting the nearby working environment, and harming workers, further enhancing the practicality of the device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0022] Figure 3 This is a three-dimensional sectional view of the internal structure of the box of this utility model;

[0023] Figure 4 This is a schematic diagram of the internal cross-sectional planar structure of the box body of this utility model;

[0024] Figure 5 This is a schematic diagram showing the relative positions of the dust collection hood and the screening frame of this utility model.

[0025] In the diagram: 1. Base; 2. Box body; 3. Feed inlet; 4. First through slot; 5. Second through slot; 6. Fixing plate; 7. Screening frame; 8. Drive motor; 9. Screening hole group; 10. Extension plate; 11. Connecting plate; 12. Slag discharge frame; 13. Eccentric wheel; 14. Connecting rod; 15. Cleaning port; 16. Cleaning door; 17. Mounting base; 18. Dust collection box; 19. Exhaust fan; 20. Dust collection pipe; 21. Dust collection hood; 22. Interception filter screen; 23. Box door. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be understood that the terms "surface", "side", "gap", "peripheral", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Reference Figures 1-5A device for separating tea dust from tea leaves includes a base 1, a box 2 fixedly mounted on the top of the base 1, a feed inlet 3 on the top of the box 2, a first through groove 4 on both sides of the box 2, a height difference between the two first through grooves 4, and a second through groove 5 on one side of the box 2, the second through groove 5 being located below the higher first through groove 4.

[0029] The separation mechanism includes a fixed plate 6, a screening frame 7, and a drive motor 8. The fixed plate 6 is fixedly installed on one side of the housing 2 and is located below the lower first through slot 4. The screening frame 7 passes through the two first through slots 4 at an angle. The bottom of the screening frame 7 is hinged to the top of the fixed plate 6 via a hinge assembly. A screening hole group 9 is opened on the inner bottom surface of the screening frame 7 and is located inside the housing 2. An extension plate 10 is fixedly connected to the higher end of the screening frame 7, and an extension plate 10 is fixedly connected to the bottom of the screening frame 7. Multiple L-shaped connecting plates 11 are fixedly connected to the top of the L-shaped turning surface of the connecting plate 11. The slag discharge frame 12 is designed at an angle, and the tilt direction of the slag discharge frame 12 is opposite to that of the screening frame 7. The lower end of the slag discharge frame 12 moves through the second through groove 5. The drive motor 8 is fixedly installed on one side of the box 2 through the mounting parts. The output end of the drive motor 8 is provided with an eccentric wheel 13. A connecting rod 14 is rotatably connected to the eccentric wheel 13. The top of the connecting rod 14 is hinged to the bottom of the extension plate 10 through a hinge assembly.

[0030] The top and lower end of the screening frame 7 are both open, as are the top and lower end of the slag discharge frame 12. The top opening size of the slag discharge frame 12 is larger than the overall size of the screening hole group 9. The screening frame 7, the connecting plate 11, and the slag discharge frame 12 are all made of aluminum alloy, and the connecting plate 11 is fixedly connected to the screening frame 7 and the slag discharge frame 12 by welding. The front and rear sides of the screening frame 7 and the slag discharge frame 12 are close to but do not contact the inner wall of the box 2, and the distance between the front and rear sides of the screening frame 7 and the slag discharge frame 12 and the box 2 is 1mm-2mm.

[0031] A cleaning port 15 is provided at the bottom of the side of the box body 2 away from the second through groove 5, and a cleaning door 16 is hinged at the cleaning port 15; the inner bottom surface of the box body 2 is inclined towards the cleaning port 15, and the inner bottom surface of the box body 2 is a smooth surface.

[0032] A mounting base 17 is provided on one side of the housing 2. A dust collection box 18 and an exhaust fan 19 are fixedly installed on the top of the mounting base 17. The exhaust end of the exhaust fan 19 is connected to one side of the dust collection box 18. A dust collection pipe 20 is connected to the other side of the dust collection box 18. The dust collection pipe 20 passes through the top of the housing 2. A dust collection hood 21 is fixedly connected to the bottom end of the dust collection pipe 20. The dust collection hood 21 is located above the screening frame 7. An intercepting filter screen 22 is installed inside the dust collection box 18. A door 23 is hinged on one side of the dust collection box 18. When the door 23 is closed, it is sealed to the dust collection box 18.

[0033] In the specific implementation process, during operation, tea leaves can be added to the box 2 through the feed inlet 3, and the drive motor 8 is started. After entering the box 2, the tea leaves will fall onto the screening frame 7. The drive motor 8 works in conjunction with the eccentric wheel 13 and the connecting rod 14, as well as with the two sets of hinge components, to drive the higher end of the screening frame 7 to move up and down reciprocally, creating vibration, which assists in screening the tea leaves in the screening frame 7. During screening, tea dregs and tea dust will fall into the slag discharge frame 12 through the screening hole group 9, while qualified tea leaves will pass through the screening hole group 9. The frame 7 slides down until it slides out of the screening frame 7 for processing. When the screening frame 7 vibrates, the connecting plate 11 can also drive the slag discharge frame 12 to vibrate, which helps the slag discharge frame 12 to discharge the tea leaves and tea dust inside. There is no need for manual discharge and slag discharge. The entire process is automatic, saving time and effort, and is highly efficient. Moreover, the tea leaves will not block the screening frame 7 and affect the normal operation. The slag discharge frame 12 can also discharge the tea leaves and tea dust well, and it is not easy for the tea leaves and tea dust to accumulate in large quantities inside the box 2 and affect the normal operation.

[0034] The top and lower end of the screening frame 7 are both open to receive and automatically discharge qualified tea leaves. The top and lower end of the slag discharge frame 12 are both open to receive and automatically discharge tea leaves and tea dust. The top opening size of the slag discharge frame 12 is larger than the overall size of the screening hole group 9 to ensure that the slag discharge frame 12 can effectively catch the tea leaves and tea dust falling from the screening hole group 9.

[0035] Among them, the screening frame 7, the connecting plate 11 and the slag discharge frame 12 are all made of aluminum alloy to ensure that the screening frame 7, the connecting plate 11 and the slag discharge frame 12 have high rigidity and are not easily deformed or damaged. The connecting plate 11 is fixedly connected to the screening frame 7 and the slag discharge frame 12 by welding to avoid the connection plate 11 from breaking and separating from the screening frame 7 and the slag discharge frame 12.

[0036] The front and rear sides of the screening frame 7 and the slag discharge frame 12 are close to but do not contact the inner wall of the box 2. The distance between the front and rear sides of the screening frame 7 and the slag discharge frame 12 and the box 2 is 1mm-2mm so that the screening frame 7 and the slag discharge frame 12 can receive the material well and will not generate movement friction with the box 2.

[0037] Among them, the small amount of tea dregs and tea dust that leaked over the slag discharge frame 12 into the bottom of the box 2 can be cleaned by periodically opening the cleaning door 16;

[0038] The bottom surface of the box 2 is inclined towards the cleaning port 15, and the bottom surface of the box 2 is smooth, all to facilitate the cleaning of tea leaves and tea dust on the bottom surface of the box 2.

[0039] During operation, the exhaust fan 19, in conjunction with the dust collection box 18 and the dust collection pipe 20, generates negative pressure suction at the dust collection hood 21, drawing the tea dust generated when the sieve frame 7 vibrates into the dust collection box 18. The dust is then intercepted and retained in the dust collection box 18 by the interception filter 22, while clean air is discharged through the exhaust fan 19. This effectively prevents a large amount of tea dust from drifting into the surrounding air and polluting the nearby working environment and harming the staff.

[0040] Among them, the aperture of the sieve hole group 9 is 0.5-1mm and the hole spacing is 2-3mm. It is arranged in a matrix to ensure that tea dust (particle size is usually less than 0.5mm) can pass through the sieve holes, while whole tea leaves (particle size is usually greater than 1mm) are intercepted in the sieve frame 7.

[0041] The drive motor 8 has a power of 0.3-0.5kW, a speed of 1400-1800r / min, and an output torque of 5-8N・m, which ensures that it can drive the screening frame 7 and the slag discharge frame 12 to generate a vibration of 5-10mm to meet the separation requirements.

[0042] Among them, the interception filter 22 is made of stainless steel with a mesh size of 100-120 and a filtration accuracy of 0.1-0.2mm, which ensures that it can effectively intercept tea dust and has a certain degree of wear resistance, thus extending its service life.

[0043] The hinge assembly can be designed as follows:

[0044] The hinge assembly adopts a pin-type structure, including a pin, a bushing, and a gasket. The pin passes through the bottom ear plate of the screening frame 7 and the top ear plate of the fixing plate 6 in sequence. The bushing is sleeved on the outside of the pin, and the gasket is placed between the ear plate and the bushing to realize the hinge between the screening frame 7 and the fixing plate 6. The hinge assembly at the top of the connecting rod 14 and the bottom of the extension plate 10 adopts the same pin-type structure to ensure that the hinge is flexible and stable.

[0045] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A device for separating tea dust from tea leaves, comprising a base (1), characterised in that: The top of the base (1) is fixedly provided with a box (2), the top of the box (2) is provided with a feeding port (3), both sides of the box (2) are provided with a first through slot (4), the height difference is arranged between the two first through slots (4), and the side of the box (2) is provided with a second through slot (5). The separation mechanism comprises a fixed plate (6), a screening frame (7) and a driving motor (8), the fixed plate (6) is fixedly installed on one side of the box (2), and the fixed plate (6) is located below the lower first through slot (4); the screening frame (7) penetrates through the two first through slots (4) at an oblique angle; the bottom of the screening frame (7) is hingedly connected to the top of the fixed plate (6) through a hinge assembly; a plurality of screening hole groups (9) are arranged on the inner bottom surface of the screening frame (7); the screening hole groups (9) are located in the box (2); the higher end of the screening frame (7) is fixedly connected with an extension plate (10); the bottom of the screening frame (7) is fixedly connected with a plurality of L-shaped connecting plates (11); the L-shaped turning surface of the connecting plate (11) is fixedly connected with a residue discharging frame (12) at the top; the residue discharging frame (12) is designed at an oblique angle, and the inclination direction of the residue discharging frame (12) is opposite to that of the screening frame (7); the lower end of the residue discharging frame (12) is movably arranged through the second through slot (5); the driving motor (8) is fixedly installed on one side of the box (2) through a mounting piece; the output end of the driving motor (8) is provided with an eccentric wheel (13); the eccentric wheel (13) is rotatably connected with a connecting rod (14); and the top of the connecting rod (14) is hingedly connected to the bottom of the extension plate (10) through a hinge assembly.

2. A device for separating tea dust from tea leaves as claimed in claim 1 wherein: The top and the lower end of the screening frame (7) are designed in an open type; the top and the lower end of the residue discharging frame (12) are designed in an open type, and the opening size of the top of the residue discharging frame (12) is larger than the overall size of the screening hole groups (9).

3. A device for separating tea dust from tea leaves as claimed in claim 1 wherein: The screening frame (7), the connecting plate (11) and the residue discharging frame (12) are all made of aluminum alloy material, and the connecting plate (11) is fixedly connected with the screening frame (7) and the residue discharging frame (12) through welding.

4. A device for separating tea dust from tea leaves as claimed in claim 1 wherein: The front and rear sides of the screening frame (7) and the residue discharging frame (12) are close to but not in contact with the inner wall of the box (2), and the distance between the front and rear sides of the screening frame (7) and the residue discharging frame (12) and the box (2) is 1mm-2mm.

5. A device for separating tea dust from tea leaves as claimed in claim 1 wherein: The bottom of the side of the box (2) away from the second through slot (5) is provided with a cleaning port (15), and the cleaning port (15) is hingedly provided with a cleaning door (16).

6. A device for separating tea dust from tea leaves as claimed in claim 1 wherein: The inner bottom surface of the box (2) is inclined towards the cleaning port (15), and the inner bottom surface of the box (2) is a smooth surface.

7. A device for separating tea dust from tea leaves as claimed in claim 1 wherein: One side of the box (2) is equipped with the mounting seat (17), the top of the mounting seat (17) is fixedly installed with the dust collecting box (18) and the exhaust fan (19), the exhaust end of the exhaust fan (19) is communicated with one side of the dust collecting box (18), the other side of the dust collecting box (18) is communicated with the dust collecting pipe (20), the dust collecting pipe (20) penetrates the top of the box (2), the bottom end of the dust collecting pipe (20) is fixedly connected with the dust collecting cover (21), the dust collecting cover (21) is located above the screening frame (7), the inside of the dust collecting box (18) is movably clamped with the intercepting filter screen (22), one side of the dust collecting box (18) is hingedly equipped with the box door (23), the box door (23) is in sealing connection with the dust collecting box (18) when being closed.

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