A vibrating screen structure for tea sieving and processing with replaceable screens

Abstract

This utility model discloses a vibrating screen structure for tea sieving and processing with replaceable screens, including a screen plate and an assembly structure. The assembly structure includes two assembly frame plates. Multiple first ball seats are assembled along the sieving direction by an array of bolts on the assembly frame plates. The first ball seats and the ball arms at the ends of the spring tubes form a multi-degree-of-freedom movable fit. An output rod slides within the T-shaped space inside the spring tube. The output rod and the spring tube are elastically constrained by a tension spring. The ball arm at the other end of the output rod is vertically pushed upward along a downward-opening limiting groove inside the second ball seat for constraint. The second ball seat is connected to the screen side plate by bolts. The screen side plate positions the screen plate through grooves and insert rods. The second ball seat has a built-in magnet to improve connection stability. This utility model, through a non-rigid connection design, allows for quick disassembly and installation of the screen plate without disassembling the bolts, significantly shortening the maintenance and replacement time of the screen plate and effectively reducing equipment and screen plate wear caused by rigid disassembly and assembly.

Description

Technical Field

[0001] This utility model relates to the field of tea sieving technology, specifically a vibrating screen structure with replaceable screens for tea sieving and processing. Background Technology

[0002] In the tea processing industry, screening is one of the core processes in the refining of tea. It builds upon the initial processing of tea leaves. After fresh tea leaves undergo picking, fixing, rolling, and drying to become raw tea, the raw tea is affected by the size and shape differences of the fresh leaves themselves, as well as the natural influence of the processing conditions during the initial processing. This results in tea leaves of varying lengths and particle sizes, and may also contain tea stems, broken pieces, and other tea-related substances. With the continuous segmentation and upgrading of the tea consumption market, different consumption scenarios have clear and diverse requirements for the shape and uniformity of tea leaves: for example, loose tea used for daily brewing needs to ensure the uniformity of the tea leaves... Uniformity enhances brewing stability and visual appeal. Tea bag production requires sieving tea leaves into broken tea of ​​a specific particle size to ensure rapid dissolution of active ingredients. High-end gift teas have even stricter requirements for the consistency of tea leaf shape. Furthermore, the advancement of standardization in the tea industry necessitates achieving stable and controllable tea quality through precise processing. Sieving is a crucial link between raw tea and standardized finished tea. By grading and screening tea leaves, a uniform raw material base can be provided for subsequent refining processes (such as sorting and roasting). It also helps teas of different qualities and shapes to accurately match market demands, driving the tea processing industry towards refinement and standardization.

[0003] In the tea sieving and processing process, the vibrating screen is a key piece of equipment for grading and screening tea. In the current conventional vibrating screen design, each screen plate is generally assembled and fixed to the main body of the equipment using a rigid connection method (such as bolt fastening). Although this can ensure the stability of the screen plate in the high-frequency vibration environment of the sieving operation, this design brings significant inconvenience to the subsequent maintenance of the screen plate. Whether it is disassembling, cleaning, or replacing the screen plate after wear, it is necessary to disassemble the rigid connection structure in a tedious way. This not only increases maintenance time, but may also cause additional damage to the screen plate or equipment connection parts due to improper operation during disassembly and assembly.

[0004] To address these issues, this invention provides a vibrating screen structure with replaceable screens for tea sieving and processing. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a vibrating screen structure with replaceable screens for tea sieving and processing, thus solving the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vibrating screen structure for tea sieving and processing with replaceable screens, comprising: The screen has uniform sieve holes on its surface; The assembly structure is assembled on both sides of the mesh plate, causing the mesh plate to present a concave posture under the action of gravity. The assembly structure includes two assembly racks, characterized in that: The assembly frame plate is equipped with multiple first ball seats along a straight line towards the screening direction at the middle position near the side of the screen plate via a bolt array. These first ball seats are engaged with ball arms that are integral with the end of the spring tube, allowing for multi-degree-of-freedom movement. The spring tube has a T-shaped space inside, and an output rod is linearly slidably fitted inside the space. The end of the output rod is elastically constrained by a tension spring between it and the end of the space inside the spring tube. The end of the output rod that extends out of the spring tube also has a ball arm, which moves vertically upward along a limiting groove inside the second ball seat, constraining it within the second ball seat.

[0007] Preferably, the lower surface of the assembly frame plate is equipped with support legs for assembly with the lower layer or the vibrating screen body using bolts.

[0008] Preferably, after the ball arm is shaped and supported inside the defined slot, it will work with a magnet disposed inside the second ball seat to improve the stability of the connection.

[0009] Preferably, the groove shape of the defined slot is the same as the cross-section of the ball arm.

[0010] Preferably, the second ball seat is bolted to the surface of the screen side plate.

[0011] Preferably, the side of the screen edge plate facing the screen plate has a slot for inserting into the side of the screen plate, and is positioned by a rod after being connected to the screen plate.

[0012] Preferably, the surface of the screen side plate can be fitted with bolts to form a baffle to separate the material. Beneficial effects

[0013] This utility model provides a vibrating screen structure with replaceable screens for tea sieving and processing. Compared with the prior art, it has the following advantages: This tea-sieving and processing replaceable vibrating screen structure achieves a non-rigid, quick connection between the screen side plate and the assembly frame plate through the multi-degree-of-freedom movable cooperation between the first ball seat and the ball arm at the end of the spring tube, the downward-open limiting groove in the second ball seat, and the built-in magnet. Combined with the elastic constraint of the output rod and the pull spring, it can complete the disassembly and installation of the screen plate without disassembling bolts or other rigid structures. This significantly shortens the time required for screen plate maintenance and replacement, avoids the additional wear and tear on the equipment connection parts and screen plate caused by rigid disassembly and assembly, reduces vibration wear on the assembly structure connection parts, extends the service life of the screen plate and assembly components, and reduces the long-term maintenance cost of the equipment. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is an exploded view of the overall structure of this utility model; Figure 3 This is a cross-sectional view of the overall structure of this utility model; Figure 4 This is the utility model Figure 3 Enlarged view of point A in the middle.

[0015] In the diagram: 1. Mesh plate; 2. Assembly structure; 21. Assembly frame plate; 211. First ball seat; 22. Bourdon tube; 221. Pull spring; 222. Output rod; 223. Ball arm; 23. Mesh side plate; 231. Second ball seat; 232. Limiting slot. Detailed Implementation

[0016] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-4 A vibrating screen structure for tea sieving and processing with replaceable screens, comprising: Mesh plate 1 has uniform sieve holes on its surface; Assembly structure 2 is assembled on both sides of mesh plate 1, and makes mesh plate 1 present a concave posture under the action of gravity; Assembly structure 2 includes two assembly racks 21. The lower surface of the mounting plate 21 is equipped with feet for assembly with the lower layer or the main body of the vibrating screen using bolts. Near the center of the side of the screen plate 1, multiple first ball seats 211 are bolted along a straight line towards the screening direction. These first ball seats 211 engage with the ball arms 223 integrated with the end of the spring tube 22 for multi-degree-of-freedom movement. The spring tube 22 has a T-shaped space inside, and an output rod 222 is linearly slidably fitted within this space. The end of the output rod 222 is elastically constrained by a tension spring 221 to the end of the space inside the spring tube 22. The end of the output rod 222 extending out of the spring tube 22 also has a ball arm 223, and this ball arm 223 extends along the first... The limiting slot 232 inside the second ball seat 231 opens downwards and is movably constrained inside the second ball seat 231 by pushing vertically upwards. After the ball arm 223 is supported inside the limiting slot 232 in a shape-fitting manner, it will cooperate with the magnet inside the second ball seat 231 to improve the stability of the connection. The groove shape of the limiting slot 232 is the same as the cross-section of the ball arm 223. The second ball seat 231 is connected to the surface of the screen side plate 23 by bolts. The side of the screen side plate 23 facing the screen plate 1 has a slot for inserting into the side of the screen plate 1. After being connected to the screen plate 1, it is positioned by rotating the positioning rod. The surface of the screen side plate 23 can be fitted with a baffle to separate the material with bolts.

[0018] During operation, first, the assembly frame plate 21 is fixed to the main body or lower structure of the vibrating screen using supports and bolts to ensure the stability of the overall assembly structure 2. Then, the side of the screen plate 1 is inserted into the slot of the screen side plate 23, and the insertion rod is rotated to complete the positioning. According to the screening requirements, a baffle is installed on the screen side plate 23 to prevent tea leaves from leaking out. Then, the second ball seat 231 of the screen side plate 23 is aligned with the limiting slot 232 of the output rod 222, and pushed vertically upward to make the ball arm 223 snap into the slot. The magnet inside the second ball seat attracts the ball arm to enhance stability. At the same time, the pull spring inside the spring tube 22 provides natural elastic restraint, which, together with the gravity of the screen plate, makes the screen plate 1 sink stably. After the vibrating screen starts, the vibration energy is transmitted through the mounting plate 23 to the screen side plate 23. The frame plate 21 transmits the material to the screen side plate 23 and the screen plate 1, causing the screen plate to vibrate synchronously. The raw tea is conveyed to the surface of the sinking screen plate. During vibration, the tea leaves flow along the screening direction. Broken tea and tea dust with a particle size smaller than the screen holes fall down, while qualified tea leaves are retained, achieving graded screening. The baffle can prevent tea leaves from leaking out from the edge during high-frequency vibration. When the screen plate 1 needs to be replaced, pull the screen plate 1 up to move the screen side plate 23 and the second ball seat 231 upward. The ball arm 223 naturally disengages from the limiting slot 232. Rotate the insert rod in the opposite direction to release the screen plate positioning, and the old screen plate can be removed. After replacing the screen plate, repeat the initial assembly steps. There is no need to disassemble the rigid structure, which can shorten maintenance time and reduce equipment and screen plate wear.

[0019] In summary, through the multi-degree-of-freedom movable cooperation between the first ball seat 211 and the ball arm 223 at the end of the spring tube 22, the downward-opening limiting slot 232 and the built-in magnet in the second ball seat 231, and the elastic constraint of the output rod 222 and the tension spring 221, a non-rigid quick connection between the screen side plate 23 and the assembly frame plate 21 is achieved. The screen plate 1 can be disassembled and installed without disassembling rigid structures such as bolts, which greatly shortens the maintenance and replacement time of the screen plate 1. At the same time, it avoids the additional wear and tear on the equipment connection parts and screen plate 1 caused by rigid disassembly and assembly. It can also reduce the vibration wear of the connection parts of the assembly structure 2, extend the service life of the screen plate 1 and the assembly parts, and reduce the maintenance cost of the equipment in the long term.

[0020] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0021] Working principle: During operation, the assembly frame plate 21 is first fixed to the vibrating screen body or lower structure via bolts on its lower surface support feet to ensure the stability of the overall assembly structure 2. Then, the side of the screen plate 1 is inserted into the slot of the screen side plate 23. The positioning of the screen plate 1 and the screen side plate 23 is completed by rotating the positioning rod. According to the screening requirements, a baffle is installed on the surface of the screen side plate 23 to prevent tea leaves from leaking out from the side during vibration. Next, the limiting slot 232 of the second ball seat 231 on the screen side plate 23 is aligned with the ball arm 223 at the end of the output rod 222, and pushed vertically upward. The screen side plate 23 allows the ball arm 223 to engage in the limiting slot 232. At this time, the magnet inside the second ball seat 231 will attract the ball arm 223, further improving the connection stability. Meanwhile, the tension spring 221 inside the spring tube 22 is in a natural elastic constraint state. Combined with the weight of the screen plate itself, the screen plate 1 presents a stable concave posture. When the vibrating screen body starts, the vibration energy is transmitted to the screen side plate 23 and the screen plate 1 through the assembly frame plate 21, causing the screen plate 1 to vibrate synchronously with the vibrating screen body. At this time, the raw tea to be screened is transported to the surface of the sunken screen plate 1. Under the vibration of the screen plate 1, The tea leaves flow along the sieving direction. Tea fragments and loose tea with a particle size smaller than the mesh size of screen 1 fall through the mesh to the lower layer, while tea leaves meeting the particle size requirements remain on the surface of screen 1, achieving tea grading and screening. The baffles on the screen side plate 23 effectively prevent tea leaves from leaking out from the edge of the screen during high-frequency vibration, ensuring the integrity of the sieving process. When screen 1 needs to be replaced (e.g., due to wear or adjustment of the mesh size to suit different sieving needs), simply pull screen 1 upwards gently, causing the screen side plate 23 and the second ball seat 231 to move upwards simultaneously. Since the limiting groove 232 of the second ball seat 231 is downwards… With an open design, the ball arm 223 and the limiting slot 232 are connected only by shape matching and magnetic adsorption. During the upward movement, the ball arm 223 will naturally disengage from the limiting slot 232. Then, the insertion rod that positions the screen plate 1 is rotated in the opposite direction to release the positioning state between the screen plate 1 and the screen side plate 23. The old screen plate 1 can then be removed from the slot of the screen side plate 23. After replacing the new screen plate 1, the initial assembly steps are repeated to complete the screen plate replacement. The whole process does not require cumbersome disassembly of the rigid structure, which greatly shortens the maintenance time and avoids additional damage to the equipment connection parts or screen plate caused by disassembly and assembly operations.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] 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 vibrating screen structure for tea sieving and processing with replaceable screens, comprising: The screen (1) has uniform sieve holes on its surface; The assembly structure (2) is assembled on both sides of the mesh plate (1), and the mesh plate (1) is made to present a concave posture under the action of gravity; The assembly structure (2) includes two assembly racks (21), characterized in that: The assembly frame plate (21) is equipped with multiple first ball seats (211) in a straight line along the screening direction at the middle position of the side of the screen plate (1). The ball seats (211) and the ball arms (223) integrated with the end of the spring tube (22) are in a multi-degree-of-freedom movement. The spring tube (22) has a T-shaped space inside, and the output rod (222) is linearly slidably limited inside the space. The end of the output rod (222) and the end of the space inside the spring tube (22) are elastically constrained by a tension spring (221). The end of the output rod (222) that protrudes from the spring tube (22) also has a ball arm (223). The ball arm (223) is movably constrained inside the second ball seat (231) by pushing vertically upward along the limiting groove (232) that opens downward inside the second ball seat (231).

2. The vibrating screen structure of claim 1, wherein: The lower surface of each assembly frame plate (21) is equipped with feet for assembly with the lower layer or the vibrating screen body using bolts.

3. The vibrating screen structure of claim 1, wherein: After the ball arm (223) is shaped to fit inside the defined slot (232), it will work with the magnet inside the second ball seat (231) to improve the stability of the connection.

4. The vibrating screen structure of claim 1, wherein: The groove shape of the defined slot (232) is the same as the cross-section of the ball arm (223).

5. The tea screening processing replaceable screen of the vibrating screen structure according to claim 1, characterized in that: The second ball seat (231) is bolted to the surface of the screen side plate (23).

6. The vibrating screen structure of claim 5, wherein: The side of the screen side plate (23) facing the screen plate (1) has a slot for inserting into the side of the screen plate (1), and is positioned by inserting a rod after being connected to the screen plate (1).

7. The vibrating screen structure of claim 5, wherein: The surface of the screen side plate (23) can be fitted with bolts to form a baffle to separate the material.

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