Grading type multi-section tea leaf refining processing device

Abstract

The invention relates to the technical field of tea powder production, in particular to a multi-section tea leaf refining processing device which comprises a rolling channel and a pressing and twisting roller, the pressing and twisting roller extrudes and crushes tea leaves entering the rolling channel, a plurality of gas nozzles are embedded in the bottom wall of the rolling channel, and the gas nozzles are communicated with the rolling channel. The gas nozzles spray gas to form a fluidized bed environment in the rolling channel, the bottom wall of the rolling channel is covered with a baffle, the baffle is provided with vent holes in one-to-one correspondence with the gas nozzles, each vent hole is connected with an elastic piece, one side of each elastic piece is fixedly connected to the edge of the corresponding vent hole, and the other side of each elastic piece tilts upwards under the action of the elastic force of the elastic piece. And the elastic sheet covers the gas nozzle when being extruded by the pressing and twisting roller. A fluidized bed environment is formed in the rolling channel, retention and caking of tea powder are prevented, meanwhile, a deformable baffle is laid on the bottom wall of the rolling channel, and the baffle seals the gas nozzle during extrusion of the pressing and twisting roller, so that crushing and fluidization of tea leaves do not affect each other.

Description

Technical Field

[0001] The invention relates to the technical field of tea powder production, and in particular to a graded multi-stage tea refining and processing device. Background Art

[0002] Current tea processing technology focuses 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, and it is difficult to achieve efficient and uniform grinding in a short time using ordinary grinding equipment to obtain tea powder with appropriate fineness and stable quality. At the same time, the grinding process is prone to adhesion and accumulation, causing the tea powder to remain inside the equipment, affecting processing efficiency and finished product quality.

[0004] On the other hand, the existing mechanical grinding method lacks effective means to regulate the fluidity of tea powder. Once the powder is retained or agglomerated, the efficiency and accuracy of subsequent screening and transportation will be reduced, thereby affecting the overall production capacity and quality stability. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-stage tea refining processing device, which aims to solve the problem that tea powder is easily sticky and piled up during the tea crushing process, so that tea powder is retained inside the equipment, affecting the processing efficiency and the quality of the finished product.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A multi-stage tea refining and processing device comprises a horizontally mounted processing platform and a linkage bracket rotatable around the central axis of the processing platform, wherein a plurality of rolling grooves arranged in annular shapes and concentrically stacked on a horizontal plane are arranged on the peripheral side of the processing platform;

[0008] A plurality of pressing and twisting rollers are installed on the linkage bracket, each of which is placed in each rolling channel and forms a processing gap with the inner wall of the rolling channel. The linkage bracket realizes rotational movement through a rotary drive arranged inside the processing platform, thereby driving the pressing and twisting rollers to squeeze and crush the tea leaves entering the rolling channel.

[0009] A plurality of gas nozzles are embedded in the bottom wall of the rolling channel, and the gas nozzles are connected to a compressed gas source to spray gas from the bottom of the rolling channel into the inside of the rolling channel, thereby forming a fluidized bed environment in the rolling channel, so that the tea powder can be kept in a suspended flow state during the processing and discharged smoothly;

[0010] The bottom wall of the rolling groove is covered with a baffle, which has air holes corresponding to each of the gas nozzles. Each of the air holes is connected to a spring sheet, one side of which is fixedly connected to the edge of the air hole, and the other side of the spring sheet is tilted upward under the action of its own elastic force, thereby forming a channel between the spring sheet and the rolling groove for the air flow ejected from the gas nozzle to pass through. When the spring sheet is squeezed by the twisting roller, it bends downward so as to be parallel to the baffle and completely cover the gas nozzle.

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

[0012] Furthermore, an airflow combing chamber is provided below the rolling groove, and 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 which is concave downward in the middle. The output end of the compressed air source is connected to a plurality of gas nozzles, and 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 hits the lowest point of the airflow combing chamber, and then flows back upward along the bottom wall of the airflow combing chamber to form a uniform airflow passing through each gas nozzle, thereby forming a fluidized bed environment inside the rolling groove.

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

[0014] Furthermore, a wave-shaped material passage is provided on the surface of the kneading block, and the wave-shaped material passage extends along the circumferential direction of the rolling channel, so that the tea powder is continuously sheared in the circumferential flow and is evenly refined.

[0015] Furthermore, the working areas of the twisting roller and the kneading block partially overlap.

[0016] Furthermore, a cover plate is arranged above the processing platform, the cover plate is positioned to cover the top opening of the rolling channel, and rotates 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 dividing port corresponding to each of the rolling channels, the dividing port is connected to the inside of the rolling channel through a dividing pipe that passes through the cover plate, so that the tea leaves inside the storage bin enter the inside of each rolling channel 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, a powder outlet is provided on the side wall of the rolling channel.

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

[0021] The present invention arranges a pressing and twisting roller in a rolling channel to press and twist the tea leaves into tea powder, and embeds a gas nozzle in the bottom wall of the rolling channel to form a fluidized bed environment inside the rolling channel to prevent the tea powder from being retained and agglomerated. At the same time, a deformable baffle is laid on the bottom wall of the rolling channel. The baffle is formed into a shape that closes the gas nozzle under the squeezing action of the pressing and twisting roller. The baffle is formed into a shape that does not block the gas nozzle when no external force is applied, so that the crushing and fluidization of the tea leaves do not affect each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

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

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

[0025] Figure 3 A three-dimensional diagram of a kneading block of the present invention;

[0026] Figure 4 for Figure 2 Cross-sectional view in the AA direction;

[0027] The numbers in the figure represent the following:

[0028] 1-processing platform; 11-rolling channel; 12-gas nozzle; 13-storage bin; 14-feeding port; 15-airflow combing chamber; 16-gas nozzle; 2-linkage bracket; 21-cover plate; 22-feeding chute; 23-feeding port; 24-feeding pipe; 3-twisting roller; 4-rubbing block; 41-feeding trough. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The invention provides a multi-stage tea refining processing device, which aims to combine rolling, kneading and fluidization auxiliary technologies to process tea into tea powder suitable for food addition, and realize efficient crushing of tea and automatic transportation of tea powder.

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

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

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

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

[0035] A kneading block 4 fixedly connected to the linkage bracket 2 is arranged on the side of each pressing and twisting roller 3. The kneading block 4 is a block-shaped object with an uneven surface. The kneading block 4 contacts the inner wall of the rolling groove 11, and an extrusion gap is formed therebetween, so that the tea leaves are further crushed by extrusion and shearing.

[0036] Specifically, combined Figure 3A plurality of wave-shaped feeding grooves 41 are distributed on one side of the kneading block 4 that abuts against the rolling channel 11 , and the tea powder can move through the feeding grooves 41 , and in the process of passing through the feeding grooves 41 , it is kneaded by the shearing action of the feeding grooves 41 and the rolling channel 11 .

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

[0038] Furthermore, a plurality of gas nozzles 12 are arranged in the rolling channel 11, and the gas nozzles 12 are connected to a compressed air source for spraying compressed gas from bottom to top inside the rolling channel 11, thereby forming a fluidized bed environment in the rolling channel 11, so that the tea powder is suspended and flows, and the tea powder is prevented from being accumulated or blocked during the processing. The gas nozzles 12 can control the spray pressure and flow rate by adjusting the valve to meet different tea processing requirements.

[0039] Specifically, combined Figure 2 An airflow combing chamber 15 is provided below the rolling groove 11, and 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 which is concave downward in the middle. The output end of the compressed air source is connected to a plurality of 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 upward along the bottom wall of the airflow combing chamber 15, forming a uniform airflow passing through each gas nozzle 12, thereby forming a fluidized bed environment inside the rolling groove 11.

[0040] Furthermore, in order to prevent the twisting roller 3 from rolling the tea leaves into the interior of the gas nozzle 12 when rolling 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 is formed into a shape that closes the gas nozzle 12 under the squeezing action of the twisting roller 3, and the baffle 5 is formed into a shape that does not block the gas nozzle 12 when there is no external force.

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

[0042] Preferably, the tilting direction of the spring piece 52 is parallel to the moving direction of the pressing and twisting roller 3. When the spring piece 52 is tilted, 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 channel 11, which is fixedly connected to the linkage bracket 2 and does not contact the rolling channel 11. The cover plate 21 is used to move synchronously with the linkage bracket 2 to close the top opening of the rolling channel 11 to prevent tea powder from overflowing from the rolling channel 11 or the tea powder inside the rolling channel 11 from being contaminated.

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

[0045] The storage bin 13 is located above the processing platform 1, and a plurality of feed ports 14 are provided at the bottom thereof. The material distribution system includes a plurality of inclined feed chutes 22, each of which is connected to the storage bin 13 via a feed port 14. The feed chute 22 is fixedly connected to the linkage bracket 2, and the feed chute 22 can move synchronously around the storage bin 13 along with the linkage bracket 2.

[0046] Each chute is equipped with a plurality of material distribution ports 23, each of which corresponds to a rolling groove 11. A material distribution pipe 24 connected to the material distribution ports 23 is arranged on the cover plate 21. The tea leaves move from the storage bin 13 through the feed port 14 to the feed chute 22 by gravity, and then slide downward along the feed chute 22 at an angle, and a portion of the tea leaves are separated and enter into each rolling groove 11 in the process of passing through the material distribution ports 23.

[0047] In order to prevent the tea leaves from being blocked in the feeding chute 22, a gas injection port is provided inside the feeding chute 22 (not shown in the figure). The gas injection port is used to inject airflow flowing along the inner wall of the feeding chute 22 to assist the tea leaves to slide down. After the tea leaves enter the rolling groove 11, the crushing process is completed through the squeezing and kneading action of the pressing and twisting roller 3.

[0048] To facilitate the collection of tea powder, each rolling channel 11 is provided with a powder outlet (not shown in the figure). The powder outlet includes a plurality of fine sieve holes distributed on the side wall of the rolling channel 11. The sieve holes allow tea powder that meets the requirements to leave the rolling channel 11 and eventually flow into the interior of the material receiving container. The fluidized bed environment formed by the airflow ejected by the gas nozzle 12 is conducive to the discharge of the tea powder.

[0049] The present invention forms a fluidized bed environment through gas injection to solve the problem of poor fluidity of tea powder, and combines rolling and kneading technology to achieve integrated operations of tea leaf crushing and tea powder transportation, thereby greatly improving processing efficiency.

[0050] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A multi-stage tea refining and processing device, characterized in that: It comprises a horizontally mounted processing platform (1) and a linkage bracket (2) rotatable around the central axis of the processing platform (1); a plurality of rolling grooves (11) arranged in annular shapes and concentrically stacked on a horizontal plane are arranged on the peripheral side of the processing platform (1); A plurality of pressing and twisting rollers (3) are installed on the linkage bracket (2), each of the pressing and twisting rollers (3) is correspondingly placed in each of the rolling channels (11) and forms a processing gap with the inner wall of the rolling channel (11); the linkage bracket (2) realizes rotational movement through a rotary drive arranged inside the processing platform (1), thereby driving the pressing and twisting rollers (3) to squeeze and crush the tea leaves entering the rolling channel (11); A plurality of gas nozzles (12) are embedded in the bottom wall of the rolling channel (11), and the gas nozzles (12) are connected to a compressed gas source to spray gas from the bottom of the rolling channel (11) into the interior of the rolling channel (11), thereby forming a fluidized bed environment in the rolling channel (11), so that the tea powder can be kept in a suspended flow state during the processing and discharged smoothly; The bottom wall of the rolling channel (11) is covered with a baffle (5), and the baffle (5) has ventilation holes (51) corresponding to each of the gas nozzles (12). Each of the ventilation holes (51) is connected to a spring sheet (52), one side of the spring sheet (52) is fixedly connected to the edge of the ventilation hole (51), and the other side of the spring sheet (52) is tilted upward under the action of its own elastic force, thereby forming a channel between the spring sheet (52) and the rolling channel (11) for the airflow ejected by the gas nozzle (12) to pass through. When the spring sheet (52) is squeezed by the twisting roller (3), it bends downward so as to be parallel to the baffle (5) and completely cover the gas nozzle (12).

2. A multi-stage tea refining and processing device according to claim 1, characterized in that: The tilting direction of the spring sheet (52) is parallel to the moving direction of the twisting roller (3).

3. A multi-stage tea refining and processing device according to claim 1, characterized in that: An airflow combing chamber (15) is arranged below the rolling channel (11), and the input end of each of the gas nozzles (12) is connected to the interior of the airflow combing chamber (15). The airflow combing chamber (15) has a bottom wall with a downward depression in the middle. The output end of the compressed air source is connected to a plurality of 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 upward along the bottom wall of the airflow combing chamber (15), forming a uniform airflow passing through each of the gas nozzles (12), thereby forming a fluidized bed environment inside the rolling channel (11).

4. A 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), and an extrusion gap is formed between the kneading block (4) and the side wall of the rolling channel (11). When the tea leaves pass through the extrusion gap, they are kneaded and sheared to form tea powder.

5. A 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 wave-shaped material passage groove (41), and the wave-shaped material passage groove (41) extends along the circumferential direction of the rolling channel (11), so that the tea powder is continuously sheared during the circumferential flow and is evenly refined.

6. A multi-stage tea refining and processing device according to claim 4 or 5, characterized in that: The working areas of the compression 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 arranged above the processing platform (1); the cover plate (21) covers the top opening of the rolling channel (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), wherein the feeding chute (22) is connected to a feeding port (14) at the bottom of the storage bin (13), and the feeding chute (22) is provided with a dividing port (23) corresponding to each of the rolling channels (11), and the dividing port (23) is connected to the inside of the rolling channel (11) via a dividing pipe (24) passing through the cover plate (21), so that the tea leaves inside the storage bin (13) enter the inside of each rolling channel (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 textures or granular protrusions.

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

Images