A graded, multi-stage tea refining and processing device

Abstract

This invention relates to the field of tea powder production technology, specifically to a multi-stage tea refining and processing device, including a rolling trough and a twisting roller. The twisting roller compresses and crushes the tea leaves entering the rolling trough. Multiple gas nozzles are embedded in the bottom wall of the rolling trough, spraying gas to create a fluidized bed environment within the trough. The bottom wall of the rolling trough is covered with a baffle plate, each baffle plate having a ventilation hole corresponding to one of the gas nozzles. Each ventilation hole is connected to a spring plate, one side of which is fixedly connected to the edge of the ventilation hole, while the other side of the spring plate tilts upwards due to its own elasticity. When the spring plate is compressed by the twisting roller, it covers the gas nozzle. This invention creates a fluidized bed environment inside the rolling trough, preventing tea powder from stagnating and clumping. Simultaneously, the deformable baffle plate on the bottom wall of the rolling trough, under the compression of the twisting roller, seals the gas nozzles, ensuring that the crushing and fluidization of the tea leaves do not interfere with each other.

Description

Technical Field

[0001] This invention relates to the field of tea powder production technology, specifically to a graded, multi-stage tea refining and processing device. Background Technology

[0002] Current tea processing techniques mostly focus on simple drying, rolling, and grinding. However, traditional tea grinding methods often have the following problems:

[0003] On the one hand, tea leaves have a high fiber content, making it difficult to achieve efficient and uniform grinding in a short time using ordinary grinding equipment, thus failing to obtain tea powder with suitable fineness and stable quality. On the other hand, the grinding process is prone to sticking and accumulation, causing tea powder to remain inside the equipment, affecting processing efficiency and finished product quality.

[0004] On the other hand, existing mechanical grinding methods lack effective means to control the flowability of tea powder. Once the powder is stuck or clumps together, it will reduce the efficiency and accuracy of subsequent screening and conveying, thereby affecting the overall production capacity and quality stability. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-stage tea refining and processing device, which aims to solve the problem that tea powder is prone to sticking and accumulating during the tea pulverization process, causing tea powder to remain inside the equipment and affecting processing efficiency and finished product quality.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution:

[0007] A multi-stage tea refining and processing device includes a horizontally installed processing platform and a linkage support that can rotate around the central axis of the processing platform. The processing platform is provided with multiple rolling grooves that are arranged in a ring and concentrically stacked on a horizontal plane.

[0008] Multiple twisting rollers are installed on the linkage bracket, and each twisting roller is placed in the corresponding rolling groove, forming a processing gap with the inner wall of the rolling groove. The linkage bracket achieves rotational movement through a rotary driver set inside the processing platform, thereby driving the twisting rollers to squeeze and crush the tea leaves that enter the rolling groove.

[0009] Multiple gas nozzles are embedded in the bottom wall of the rolling groove. The gas nozzles are connected to a compressed gas source and spray gas from the bottom of the rolling groove into the rolling groove to form a fluidized bed environment inside the rolling groove, so that the tea powder remains in a suspended and flowing state during the processing and is discharged smoothly.

[0010] The bottom wall of the rolling groove is covered with a baffle plate, which has a vent hole corresponding to each of the gas nozzles. Each vent hole is connected to a spring piece. One side of the spring piece is fixedly connected to the edge of the vent hole, and the other side of the spring piece is tilted upward by its own elastic force, thereby forming a channel between the spring piece and the rolling groove for the airflow ejected from the gas nozzle to pass through. When the spring piece is squeezed by the twisting roller, it bends downward to be parallel to the baffle plate and completely covers the gas nozzle.

[0011] Furthermore, the upward direction of the spring sheet is parallel to the movement direction of the twisting roller.

[0012] Furthermore, an airflow combing chamber is provided below the rolling channel. The input end of each gas nozzle is connected to the interior of the airflow combing chamber. The airflow combing chamber has a bottom wall that is concave in the middle. The output end of the compressed air source is connected to multiple gas nozzles. The gas nozzles penetrate the inner wall of the airflow combing chamber and spray high-speed airflow toward the bottom wall of the airflow combing chamber. The high-speed airflow impacts the lowest point of the airflow combing chamber and then flows back upward along the bottom wall of the airflow combing chamber, forming a uniform airflow that passes through each gas nozzle, thereby forming a fluidized bed environment inside the rolling channel.

[0013] Furthermore, a kneading block is attached to the linkage support, and a squeezing gap is formed between the kneading block and the side wall of the rolling groove. When the tea leaves pass through the squeezing gap, they are kneaded and sheared to form tea powder.

[0014] Furthermore, the surface of the kneading block is provided with a wavy material passage groove, which extends along the circumferential direction of the rolling groove, so that the tea powder is continuously subjected to shearing action during the circumferential flow, thereby being uniformly refined.

[0015] Furthermore, the working area of ​​the twisting roller partially overlaps with that of the kneading block.

[0016] Furthermore, a cover plate is provided above the processing platform, the cover plate being positioned to cover the top opening of the rolling groove and rotating synchronously with the linkage bracket.

[0017] Furthermore, it also includes a storage bin and a feeding chute. The feeding chute is connected to the feeding port at the bottom of the storage bin. The feeding chute is provided with a distribution port corresponding to each of the rolling grooves. The distribution port is connected to the inside of the rolling groove through a distribution pipe that passes through the cover plate, so that the tea leaves inside the storage bin enter the inside of each rolling groove along the feeding chute under the action of gravity.

[0018] Furthermore, the surface of the twisting roller is provided with spiral textures or granular protrusions.

[0019] Furthermore, the sidewall of the rolling channel is provided with a powder outlet.

[0020] Compared with the prior art, this application has the following advantages:

[0021] This invention arranges a twisting roller in a rolling groove to twist tea leaves into tea powder. A gas nozzle is embedded in the bottom wall of the rolling groove to create a fluidized bed environment inside the rolling groove, preventing tea powder from stagnating and clumping. At the same time, a deformable baffle is laid on the bottom wall of the rolling groove. The baffle is shaped to close the gas nozzle under the squeezing action of the twisting roller. When no external force is applied, the baffle is shaped to not block the gas nozzle, so that the crushing and fluidization of tea leaves do not affect each other. Attached Figure Description

[0022] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the cross-section of the rolling groove of the present invention;

[0025] Figure 3 This is a perspective view of the kneading block of the present invention;

[0026] Figure 4 for Figure 2 A cross-sectional view along the AA direction;

[0027] The labels in the diagram represent the following:

[0028] 1-Processing platform; 11-Rolling groove; 12-Gas nozzle; 13-Storage bin; 14-Feeding port; 15-Airflow combing chamber; 16-Gas nozzle; 2-Linkage support; 21-Cover plate; 22-Feeding chute; 23-Distribution port; 24-Distribution pipe; 3-Twisting roller; 4-Kneading block; 41-Passing trough. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] This invention provides a multi-stage tea refining and processing device, which aims to combine rolling, kneading and fluidization-assisted technology to process tea into tea powder suitable for food additives, thereby achieving efficient tea crushing and automated tea powder conveying.

[0031] Combination Figure 1 The multi-stage tea refining and processing device includes a horizontally installed processing platform 1. Multiple rolling grooves 11 are arranged on the processing platform 1. The projection of the rolling grooves 11 on the horizontal plane is a ring shape arranged around the center line of the processing platform 1. The cross-section of the rolling grooves 11 is U-shaped or arc-shaped. Multiple rolling grooves 11 are arranged concentrically and layered from top to bottom to meet the needs of multi-stage processing.

[0032] A linkage bracket 2 extending toward the edge of the processing platform 1 is set at the center of the processing platform 1. The linkage bracket 2 is connected to the processing platform 1 through a rotary shaft and can rotate around the central axis of the processing platform 1. The linkage bracket 2 achieves rotational movement through a rotary drive set inside the processing platform 1. The rotary drive is an electric turntable.

[0033] Combination Figure 2 Multiple twisting rollers 3 are installed on the linkage bracket 2. Each twisting roller 3 is set in a rolling groove 11, and a processing gap is formed between the twisting roller 3 and the inner wall of the rolling groove 11, which is used to squeeze, knead and crush the tea leaves inside the processing gap.

[0034] Specifically, the twisting roller 3 is installed along the center line of the rolling groove 11. The surface of the twisting roller 3 is provided with spiral texture or particle protrusions to increase friction and crushing effect. When the twisting roller 3 rotates, it gradually crushes the tea leaves into powder.

[0035] Each pressing roller 3 has a kneading block 4 fixedly connected to the linkage bracket 2 on its side. The kneading block 4 is a block with an uneven surface. The kneading block 4 abuts against the inner wall of the rolling groove 11, and a squeezing gap is formed between the two. The tea leaves are further crushed by squeezing and shearing action.

[0036] Specifically, in combination Figure 3The side of the kneading block 4 that contacts the rolling groove 11 has several wave-shaped feed channels 41. The tea powder can move through the feed channels 41 and is kneaded by the shearing action between the feed channels 41 and the rolling groove 11 during the process of passing through the feed channels 41.

[0037] The twisting roller 3 abuts against the bottom wall of the rolling groove 11, and the kneading block 4 abuts against the side wall of the rolling groove 11. The working areas of the twisting roller 3 and the kneading block 4 partially overlap, thereby reducing the dead angles inside the rolling groove 11.

[0038] Furthermore, multiple gas nozzles 12 are provided inside the rolling channel 11. The gas nozzles 12 are connected to a compressed air source and are used to spray compressed gas from bottom to top inside the rolling channel 11, thereby forming a fluidized bed environment inside the rolling channel 11, which suspends and flows the tea powder, preventing the tea powder from accumulating or clogging during processing. The gas nozzles 12 can control the injection pressure and flow rate by adjusting the valve to adapt to different tea processing needs.

[0039] Specifically, in combination Figure 2 Below the rolling channel 11, there is an airflow combing chamber 15. The input end of each gas nozzle 12 is connected to the interior of the airflow combing chamber 15. The airflow combing chamber 15 has a bottom wall that is concave in the middle. The output end of the compressed air source is connected to multiple gas nozzles 16. The gas nozzles 16 penetrate the inner wall of the airflow combing chamber 15 and spray high-speed airflow toward the bottom wall of the airflow combing chamber 15. The high-speed airflow hits the lowest point of the airflow combing chamber 15 and then flows back up along the bottom wall of the airflow combing chamber 15, forming a uniform airflow that passes through each gas nozzle 12, thereby forming a fluidized bed environment inside the rolling channel 11.

[0040] Furthermore, to prevent the tea leaves from being crushed into the gas nozzle 12 when the twisting roller 3 is pressing the tea leaves on the bottom wall of the rolling groove 11, a deformable baffle 5 is laid on the bottom wall of the rolling groove 11. The baffle 5 forms a shape that closes the gas nozzle 12 under the squeezing action of the twisting roller 3. When there is no external force, the baffle 5 forms a shape that does not block the gas nozzle 12.

[0041] Specifically, in combination Figure 4 The baffle 5 includes a vent hole 51 corresponding to each gas nozzle 12. Each vent hole 51 is connected to a spring piece 52. One side of the spring piece 52 is fixedly connected to the edge of the vent hole 51, and the other side of the spring piece 52 is raised upward under its own elastic force, thereby forming a channel between the spring piece 52 and the rolling groove 11 for the airflow ejected from the gas nozzle 12 to pass through. When the spring piece 52 is squeezed by the twisting roller 3, it bends downward to be parallel to the baffle 5 and completely covers the gas nozzle 12.

[0042] Preferably, the upward direction of the spring piece 52 is parallel to the movement direction of the twisting roller 3. When the spring piece 52 is raised, the tea powder in the gap between the spring piece 52 and the vent hole 51 is blown out.

[0043] Furthermore, a cover plate 21 is provided at the top opening of the rolling groove 11. The cover plate 21 is fixedly connected to the linkage bracket 2 and does not contact the rolling groove 11. The cover plate 21 is used to move synchronously with the linkage bracket 2 to close the top opening of the rolling groove 11, so as to prevent tea powder from overflowing from the rolling groove 11 or the tea powder inside the rolling groove 11 from being contaminated.

[0044] To enable automatic feeding into the rolling groove 11, a storage device is designed on the top of the processing platform 1, including an annular storage bin 13 and a distribution system connected to the storage bin 13.

[0045] The storage bin 13 is located above the processing platform 1, and its bottom is provided with multiple feeding ports 14. The material distribution system includes multiple inclined feeding chutes 22. Each feeding chute 22 is connected to the storage bin 13 through a feeding port 14. The feeding chutes 22 are fixedly connected to the linkage bracket 2. The feeding chutes 22 can move synchronously around the storage bin 13 along with the linkage bracket 2.

[0046] Each chute has multiple feed inlets 23, and each feed inlet 23 corresponds to a rolling groove 11. The cover plate 21 is provided with a feed pipe 24 connecting the feed inlets 23. The tea leaves move from the storage bin 13 through the feed inlet 14 to the feed chute 22 by gravity, and then slide down the feed chute 22 at an angle. During the process of passing through the feed inlets 23, a portion of the tea leaves are separated and enter each rolling groove 11.

[0047] To prevent tea leaves from clogging in the feeding chute 22, the inside of the feeding chute 22 is equipped with a gas jet nozzle (not shown in the figure). The gas jet nozzle is used to spray airflow along the inner wall of the feeding chute 22 to assist the tea leaves to slide down. After the tea leaves enter the rolling trough 11, they are crushed by the squeezing and kneading action of the pressing roller 3.

[0048] To facilitate the collection of tea powder, each rolling trough 11 is equipped with a powder outlet (not shown in the diagram). The powder outlet includes several fine sieve holes distributed on the side wall of the rolling trough 11. The sieve holes allow qualified tea powder to leave the rolling trough 11 and eventually flow into the inside of the receiving container. The fluidized bed environment formed by the airflow sprayed by the gas nozzle 12 helps the tea powder to be discharged.

[0049] This invention solves the problem of poor tea powder flowability by creating a fluidized bed environment through gas injection. Combined with rolling and kneading technology, it realizes the integrated operation of tea powder crushing and tea powder conveying, which greatly improves processing efficiency.

[0050] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A multi-stage tea refining and processing device, characterized in that, It includes a horizontally mounted processing platform (1) and a linkage bracket (2) that can rotate around the central axis of the processing platform (1). The processing platform (1) is provided with multiple rolling grooves (11) that are arranged in a ring and concentrically stacked on the horizontal plane. Multiple twisting rollers (3) are installed on the linkage bracket (2). Each twisting roller (3) is placed in the corresponding rolling groove (11) and forms a processing gap with the inner wall of the rolling groove (11). The linkage bracket (2) achieves rotational movement through a rotary driver set inside the processing platform (1), thereby driving the twisting rollers (3) to squeeze and crush the tea leaves that enter the rolling groove (11). The bottom wall of the rolling groove (11) is embedded with a plurality of gas nozzles (12). The gas nozzles (12) are connected to a compressed gas source and spray gas from the bottom of the rolling groove (11) into the interior of the rolling groove (11) to form a fluidized bed environment in the rolling groove (11), so that the tea powder remains in a suspended and flowing state during the processing and is discharged smoothly. The bottom wall of the rolling groove (11) is covered with a baffle (5). The baffle (5) has a ventilation hole (51) corresponding to each of the gas nozzles (12). Each ventilation hole (51) is connected to a spring piece (52). One side of the spring piece (52) is fixedly connected to the edge of the ventilation hole (51). The other side of the spring piece (52) is raised upward under its own elastic force, thereby forming a channel between the spring piece (52) and the rolling groove (11) through which the airflow ejected from the gas nozzle (12) can pass. When the spring piece (52) is squeezed by the twisting roller (3), it bends downward to be parallel to the baffle (5) and completely covers the gas nozzle (12).

2. The multi-stage tea refining and processing device according to claim 1, characterized in that, The upward direction of the spring piece (52) is parallel to the movement direction of the twisting roller (3).

3. The multi-stage tea refining and processing device according to claim 1, characterized in that, Below the rolling channel (11) is an airflow combing chamber (15). The input end of each gas nozzle (12) is connected to the interior of the airflow combing chamber (15). The airflow combing chamber (15) has a bottom wall that is concave in the middle. The output end of the compressed air source is connected to multiple gas nozzles (16). The gas nozzles (16) penetrate the inner wall of the airflow combing chamber (15) and spray high-speed airflow toward the bottom wall of the airflow combing chamber (15). The high-speed airflow hits the lowest point of the airflow combing chamber (15) and then flows back up along the bottom wall of the airflow combing chamber (15), forming a uniform airflow that passes through each gas nozzle (12), thereby forming a fluidized bed environment inside the rolling channel (11).

4. The multi-stage tea refining and processing device according to claim 1, characterized in that, A kneading block (4) is attached to the linkage bracket (2). A squeezing gap is formed between the kneading block (4) and the side wall of the rolling groove (11). When the tea leaves pass through the squeezing gap, they are kneaded and sheared to form tea powder.

5. The multi-stage tea refining and processing device according to claim 4, characterized in that, The surface of the kneading block (4) is provided with a wavy material passage groove (41). The wavy material passage groove (41) extends along the circumferential direction of the rolling groove (11), so that the tea powder is continuously subjected to shearing action in the circumferential flow and is thus uniformly refined.

6. A multi-stage tea refining and processing apparatus according to claim 4 or 5, characterized in that, The working areas of the twisting roller (3) and the kneading block (4) partially overlap.

7. The multi-stage tea refining and processing device according to claim 1, characterized in that, A cover plate (21) is provided above the processing platform (1). The cover plate (21) covers the top opening of the rolling groove (11) and rotates synchronously with the linkage bracket (2).

8. The multi-stage tea refining and processing device according to claim 7, characterized in that, It also includes a storage bin (13) and a feeding chute (22). The feeding chute (22) is connected to the feeding port (14) at the bottom of the storage bin (13). The feeding chute (22) is provided with a distribution port (23) corresponding to each of the rolling channels (11). The distribution port (23) is connected to the inside of the rolling channel (11) through a distribution pipe (24) that passes through the cover plate (21), so that the tea leaves inside the storage bin (13) enter the inside of each of the rolling channels (11) along the feeding chute (22) under the action of gravity.

9. The multi-stage tea refining and processing device according to claim 1, characterized in that, The surface of the twisting roller (3) is provided with spiral texture or granular protrusions.

10. The multi-stage tea refining and processing device according to claim 1, characterized in that, The sidewall of the rolling channel (11) is provided with a powder outlet.

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