A tea leaf stem and leaf separating device

Abstract

The utility model discloses a kind of tea stem and leaf separating devices, including rack, shell, crushing assembly and sieve plate, tea inlet hopper and tea stem discharge port being set on shell, the bottom of shell is below the sieve plate and is provided with tea piece discharge port, the crushing assembly includes support roller, crushing rod and crushing transfer rod are set along the circumferential direction of support roller, the crushing rod is provided with arcuate crushing tooth, a group of arcuate crushing transfer tooth is set on the crushing transfer rod, the arcuate crushing transfer tooth is inclinedly set towards tea stem discharge port direction, to generate axial thrust, push blade and tea stem move in the shell towards tea stem discharge port direction, further including the driving assembly of driving support roller rotation.The utility model can break the blade of tea leaf and completely separate with tea stem, and tea stem will not be broken and broken and mixed into broken blade, improve broken tea quality, can be widely applied in tea processing field.

Description

Technical Field

[0001] This utility model relates to the technical field of tea processing equipment, specifically to a tea stem and leaf separation device. Background Technology

[0002] With the development of tea processing technology, large-leaf tea occupies an important position in the tea market due to its unique quality characteristics. During processing, to facilitate packaging and blending, it is usually dried and then broken up to separate the stems and leaves, resulting in broken tea. This broken tea retains the quality characteristics of the tea leaves while facilitating subsequent packaging, transportation, and blending processes.

[0003] Currently, the separation of tea stems and leaves is mainly achieved mechanically. Existing leaf and stem crushing and separating machines mostly use a blade-type structure, meaning that blades crush and separate the tea leaves. However, this blade-type structure tends to crush the tea stems along with the leaves during operation, causing the crushed stems to mix with the broken leaves, making effective separation difficult through subsequent sieving. This results in the final product still containing tea stems, failing to achieve clean separation of leaves and stems, thus affecting the purity and quality of the broken tea.

[0004] Therefore, it is necessary to design a tea stem and leaf separation device that can effectively separate the stems while avoiding breaking the stems and mixing them into the leaves, in order to meet the production needs of large-leaf tea making into broken tea. Utility Model Content

[0005] The purpose of this invention is to provide a tea stem and leaf separation device to solve the problem that existing technologies easily break tea stems and mix them into the broken leaves, resulting in the inability to effectively separate the stems and leaves.

[0006] To achieve the above objectives, the present invention provides the following technical solution: including a frame, a housing mounted on the frame, a crushing component disposed inside the housing, a sieve plate for separating stems and leaves disposed below the crushing component, a tea inlet hopper disposed at one end of the housing, a tea stem outlet disposed at the other end, and a tea flake outlet disposed at the bottom of the housing below the sieve plate.

[0007] The crushing assembly includes a support roller rotatably mounted inside the housing, a set of crushing rods arranged along the circumference of the support roller, and a set of arched crushing teeth with openings facing the support rollers spaced apart along the length of the crushing rods. The arched crushing teeth are arranged radially along the support rollers. At least one crushing transfer rod is also arranged along the circumference of the support rollers. The crushing transfer rod is provided with a set of arched crushing transfer teeth, which are inclined towards the tea stem discharge port to generate axial thrust and push the leaves and tea stems to move within the housing towards the tea stem discharge port. The assembly also includes a drive assembly for rotating the support rollers.

[0008] For ease of installation, mounting plates are provided at both ends of the support roller, and the ends of the crushing rod and the crushing transfer rod are fixed on the two mounting plates and are evenly distributed along the circumference of the mounting plates.

[0009] To ensure the blade crushing effect, the arched crushing teeth and arched crushing transfer teeth have a V-shaped outline.

[0010] Furthermore, the cross-sectional shape of the arched crushing tooth and the arched crushing transfer tooth is circular or elliptical.

[0011] To ensure thorough crushing, the number of crushing rods and crushing transfer rods are equal, and they are arranged alternately along the circumference of the support roller.

[0012] Furthermore, the arched crushing teeth on the crushing rod are arranged in a staggered manner with the arched crushing teeth on the adjacent crushing rod, or with the arched crushing transfer teeth on the adjacent crushing transfer rod.

[0013] Preferably, the sieve plate has an arc-shaped structure.

[0014] To facilitate the collection of the broken leaves, a tea leaf collection hopper with a gradually decreasing diameter is provided below the tea leaf outlet.

[0015] To achieve the drive, the drive assembly includes a drive motor mounted on the frame and a transmission belt for connecting the drive motor and the support roller.

[0016] Beneficial effects

[0017] This invention uses arched crushing teeth instead of traditional blade structures. The arched crushing teeth and arched crushing transfer teeth have a V-shaped outline and a circular or elliptical cross-section. During operation, they primarily apply impact and compression to the tea leaves, rather than blade-like cutting or shearing. The leaves of dry tea are relatively brittle and easily break into fragments under impact; while tea stems are rich in fiber, have high toughness and shear strength. The smooth impact of the arched structure prevents them from breaking or shattering, effectively avoiding tea stems from being mixed with broken leaves, significantly improving the purity and quality of the broken tea.

[0018] During the rotation of the crushing assembly, the inclined arched crushing and transfer teeth generate axial thrust, automatically pushing uncrushed tea stems and larger leaves towards the tea stem discharge port. Oversized leaves continue to be impacted and gradually break during this pushing process, ultimately leaving only tea stems to be discharged from the outlet. This structure achieves automatic material conveying and discharging without manual intervention, enabling continuous feeding and discharging, and significantly improving production efficiency. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention.

[0020] Figure 2 This is a cross-sectional view of the present invention.

[0021] Figure 3 This is a perspective view of the crushing component in this utility model.

[0022] Figure 4 This is a side view of the interior of the housing in this utility model.

[0023] Figure 5 This is a schematic diagram showing the arched crushing teeth arranged radially along the support roller in this utility model.

[0024] Figure 6 This is a schematic diagram showing the inclined arrangement of the arched crushing and transfer teeth in this utility model.

[0025] Figure 7 This is a schematic diagram showing the matrix arrangement of the sieve holes on the sieve plate in this utility model, with rows and columns aligned.

[0026] Figure 8 This is a schematic diagram showing that the sieve holes on the sieve plate in this utility model are arranged in an alternating pattern of adjacent columns. Detailed Implementation

[0027] Examples, such as Figures 1 to 8 As shown, this embodiment provides a tea stem and leaf separation device, including a frame 1, a housing 2, a crushing component 3, a sieve plate 4, and a tea leaf collection hopper 7.

[0028] Specifically:

[0029] The housing 2 is mounted on the frame 1. A tea inlet hopper 21 is provided at the upper part of one end of the housing 2, and a tea stem outlet 22 is provided at the lower part of the other end. A sieve plate 4 for separating stems and leaves is provided below the crushing component 3. A tea leaf outlet 23 is provided at the bottom of the housing 2, below the sieve plate 4. A set of sieve holes are evenly distributed on the sieve plate 4. The broken leaves are separated from the tea stems by the sieve plate 4. The broken leaves fall out of the sieve holes on the sieve plate 4 and are discharged from the housing through the tea leaf outlet 23.

[0030] The screen holes on the screen plate 4 can be arranged in a matrix with rows and columns aligned, or in an alternating arrangement of adjacent columns. With the same screen plate area, an alternating arrangement of adjacent columns allows for a greater number of screen holes, thus ensuring efficient discharge of the broken blades. For easy discharge, the screen plate 4 has an arc-shaped structure.

[0031] The crushing assembly 3 is disposed within the housing 2 and includes a support roller 31 rotatably mounted within the housing 2. A set of crushing rods 32 are arranged along the circumference of the support roller 31. Each crushing rod 32 has a set of arched crushing teeth 33 spaced along its length, with openings facing the support roller 31. The arched crushing teeth 33 are arranged radially along the support roller 31 and do not generate axial thrust. At least one crushing transfer rod 36 is also disposed along the circumference of the support roller 31. Each crushing transfer rod 36 has a set of arched crushing transfer teeth 37, which are inclined towards the tea stem outlet 22 to generate axial thrust, pushing the leaves and tea stems within the housing 2 towards the tea stem outlet 22. The assembly also includes a drive assembly 34 that rotates the support roller 31. To ensure crushing effect, the arched crushing teeth 33 and the arched crushing transfer teeth 37 have a V-shaped profile. To avoid breaking or crushing the tea stems, the cross-sections of the arched crushing teeth 33 and the arched crushing transfer teeth 37 are circular or elliptical.

[0032] To ensure uniform discharge and thorough crushing of the leaves, the arched crushing teeth 33 on the crushing rod 32 are staggered with the arched crushing teeth 33 on adjacent crushing rods 32, or staggered with the arched crushing transfer teeth 37 on adjacent crushing transfer rods 36. An equal number of crushing rods 32 and crushing transfer rods 36 are alternately arranged along the circumference of the support roller 31. In this embodiment, three of each are used. In actual applications, the number of both can be increased according to the size of the housing 2. This alternating arrangement prevents larger, uncrushed leaves from remaining in the housing for too short a time and being discharged with the tea stems from the tea stem outlet 22, thus avoiding waste and ensuring thorough crushing of the leaves.

[0033] For ease of installation, the crushing rod 32 and the crushing transfer rod 36 have the same structure, both with a V-shaped cross-section opening towards the support roller 31. During installation, the crushing rod 32 and the crushing transfer rod 36 are respectively fastened to the mounting plate 35 through the V-shaped openings, and then fixed by welding or screws, making assembly convenient. The crushing rod 32 has two first outer surfaces 321, and the two ends of the arched crushing teeth 33 are respectively fixed to these two outer surfaces; the crushing transfer rod 36 also has two second outer surfaces 361, and the two ends of the arched crushing transfer teeth 37 are respectively fixed to these two outer surfaces. Furthermore, when tea leaves fall from the tea feed hopper 21 into the housing 2, the V-shaped crushing rod 32 and the crushing transfer rod 36 can also impact and crush the tea leaves, improving crushing efficiency.

[0034] To achieve drive, the drive assembly 34 includes a drive motor 341 mounted on the frame 1 and a transmission belt 342 for connecting the drive motor 341 and the support roller 31. The drive motor 341 drives the support roller 31 to rotate via the transmission belt 342.

[0035] To facilitate the collection of broken tea leaves, a tea leaf collection hopper 7 with a gradually decreasing diameter is provided below the tea leaf outlet 23.

[0036] For ease of movement, a set of casters can be installed at the lower end of frame 1.

[0037] The working principle of this embodiment is as follows:

[0038] First, the drive motor 341 is started. The drive motor 341 drives the support roller 31 to rotate via the transmission belt 342. The support roller 31 then drives the crushing rod 32, crushing transfer rod 36, arched crushing teeth 33, and arched crushing transfer teeth 37 to rotate within the housing 2. Next, dry tea leaves requiring leaf and stem separation are fed into the housing 2 through the tea feed hopper 21. At this time, the crushing assembly 3 rotates, and its arched crushing teeth 33 and arched crushing transfer teeth 37 come into contact with the tea leaves. Since the cross-sections of the arched crushing teeth 33 and arched crushing transfer teeth 37 are both circular or elliptical, and their primary function is impact and compression rather than cutting, the arched crushing teeth 33 and arched crushing transfer teeth 37 crush the tea leaves and separate them from the tea stems, forming broken leaves. Due to the high toughness and strength of the tea stems, the arched crushing teeth 33 and arched crushing transfer teeth 37 do not crush the tea stems, which retain a relatively large size.

[0039] The crushed tea leaves fall into the tea leaf collection hopper 7 through the sieve holes on the sieve plate 4 and are discharged. Uncrushed tea stems and larger leaves are retained in the shell 2 through the sieve holes on the sieve plate 4. Due to the axial thrust generated by the inclined arched crushing and transfer teeth 37 during rotation, the larger leaves and tea stems are pushed together towards the tea stem discharge port 22. The excessively large leaves are gradually crushed during the pushing process and are discharged from the shell 2 through the sieve holes on the sieve plate 4. Finally, the remaining tea stems are discharged from the tea stem discharge port 22, thereby achieving effective separation of tea leaves and stems.

[0040] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A tea stem and leaf separation device, comprising a frame (1), a housing (2) disposed on the frame (1), wherein a crushing component (3) is disposed within the housing (2), characterized in that: The crushing component (3) is provided with a sieve plate (4) for separating stems and leaves. One end of the housing (2) is provided with a tea feed hopper (21) and the other end is provided with a tea stem outlet (22). The bottom of the housing (2) is located below the sieve plate (4) and is provided with a tea leaf outlet (23). The crushing assembly (3) includes a support roller (31) rotatably mounted inside the housing (2), a set of crushing rods (32) arranged along the circumferential direction of the support roller (31), a set of arched crushing teeth (33) with openings facing the support roller (31) spaced apart along the length direction of the crushing rods (32), the arched crushing teeth (33) arranged along the radial direction of the support roller (31); at least one crushing transfer rod (36) is also arranged along the circumferential direction of the support roller (31), a set of arched crushing transfer teeth (37) is arranged on the crushing transfer rod (36), the arched crushing transfer teeth (37) are inclined toward the tea stem outlet (22) to generate axial thrust and push the leaves and tea stems to move in the housing (2) toward the tea stem outlet (22), and also includes a drive assembly (34) that drives the support roller (31) to rotate.

2. The tea stem and leaf separation device according to claim 1, characterized in that: The support roller (31) is provided with mounting plates (35) at both ends. The two ends of the crushing rod (32) and the crushing transfer rod (36) are fixed on the two mounting plates (35) and are evenly distributed along the circumference of the mounting plates (35).

3. The tea stem and leaf separation device according to claim 2, characterized in that: The outline shape of the arched crushing tooth (33) and the arched crushing transfer tooth (37) is a V-shaped structure.

4. The tea stem and leaf separation device according to claim 3, characterized in that: The cross-sectional shape of the arched crushing tooth (33) and the arched crushing transfer tooth (37) is circular or elliptical.

5. The tea stem and leaf separation device according to claim 2, characterized in that: The number of the crushing rods (32) and the crushing transfer rods (36) are equal, and they are arranged alternately along the circumferential direction of the support rollers (31).

6. The tea stem and leaf separation device according to claim 5, characterized in that: The arched crushing teeth (33) on the crushing rod (32) are arranged in a staggered manner with the arched crushing teeth (33) on the adjacent crushing rod (32), or with the arched crushing transfer teeth (37) on the adjacent crushing transfer rod (36).

7. The tea stem and leaf separation device according to claim 1, characterized in that: The sieve plate (4) has an arc-shaped structure.

8. The tea stem and leaf separation device according to claim 1, characterized in that: Below the tea leaf outlet (23) is a tea leaf collection hopper (7) with a gradually decreasing diameter.

9. The tea stem and leaf separation device according to claim 1, characterized in that: The drive assembly (34) includes a drive motor (341) mounted on the frame (1) and a transmission belt (342) for connecting the drive motor (341) and the support roller (31).

10. The tea stem and leaf separation device according to claim 2, characterized in that: The crushing rod (32) and the crushing transfer rod (36) have the same structure, and their cross-sections are both V-shaped structures with the opening facing the support roller (31).

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