Tea making grinding processing equipment based on multi-layer drying and processing technology

Abstract

The tea making grinding processing equipment specifically comprises an outer shell, two layers of partition plates are installed in the outer shell and divide the outer shell into an upper layer, a middle layer and a lower layer, a first-stage grinding bin is installed on the uppermost layer of the outer shell, and a partition grid plate is vertically installed in the middle of the middle layer of the outer shell; a secondary grinding bin is mounted at the bottom layer of the outer shell; according to the tea leaf grinding device, after first-stage grinding is completed, gas separation is conducted on ground products, tea leaf powder which is fully ground and tea leaf particles which are not fully ground are separated, the tea leaf particles which are not fully ground are ground again after recycling, it is guaranteed that tea leaves are fully ground, and meanwhile the situation that in the repeated grinding process, the tea leaves are not fully ground is avoided. The tea powder with the granularity reaching the standard is excessively ground, so that the granularity is not uniform, and the situation that the tea particles are wrapped by the tea powder, and the secondary grinding effect is affected can be avoided.

Description

Technical Field

[0001] The invention relates to the field of tea making and grinding processing, in particular to tea making and grinding processing equipment and a processing technology based on multi-layer drying. Background Art

[0002] In the production process of oolong tea, tea leaves are rolled and fried into a spherical or hemispherical shape with a high density. In order to meet people's demand for tea drinks with different tastes and shapes, the process of grinding the finished tea leaves into tea powder has been derived. The main purpose of grinding tea leaves is to change their shape, enhance the taste, release aroma and increase solubility, so that they can be used to make tea bags, brew tea powder or other flavoring agents for drinks and foods;

[0003] Tea grinding is mostly done through tea grinding equipment. Grinding equipment can grind tea through different working methods. Common working methods include blade grinding, friction grinding and rolling grinding. Friction grinding is further divided into up and down rotation grinding and inside and outside rotation grinding.

[0004] At present, Chinese patent CN118371303A discloses a technical solution, which is to change the angle of the grinding cylinder to achieve repeated entry of tea leaves that are not fully ground into the grinding mechanism, thereby achieving multiple grinding of the tea leaves, which can improve the process of tea leaves re-entering the grinding chamber for grinding after being discharged to a certain extent;

[0005] However, in the production of tea powder, due to the various application scenarios of tea powder, for example, when making tea flavoring, the finest powder is required, and when making tea bags, it is necessary to ensure that the particle size of the tea powder is larger than the outer coating material of the tea bag to prevent the tea powder from leaking;

[0006] However, in the process of repeatedly grinding tea leaves, the above patent does not discharge the fully ground tea powder, which results in that the fully ground tea powder is ground again while the incompletely ground tea powder is ground. This not only makes the particle size of the ground tea powder different, and makes it impossible to accurately control the grinding particle size of the tea powder, but also makes the ground tea powder wrap the incompletely ground tea particles, which reduces the secondary grinding efficiency of the incompletely ground tea particles, and is not conducive to actual production.

[0007] At the same time, as the particle size of tea leaves changes, their ability to adsorb moisture in the air will become stronger, so the dryness of the gas needs to be ensured during the grinding process.

[0008] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0009] After the first-level grinding is completed, the present invention performs gas sorting on the ground product to separate the fully ground tea powder and the incompletely ground tea particles, and grinds the incompletely ground tea particles again after recovery to ensure the sufficient grinding of the tea leaves. At the same time, it can also avoid the problem of excessive grinding of tea powder that has reached the particle size standard during repeated grinding, thereby causing uneven particle sizes, and can also avoid the problem that the tea particles are wrapped by the tea powder and affect the effect of the secondary grinding, effectively improving the degree of sufficient tea grinding and the uniformity of the powder particle size. At the same time, a dryer is used for air intake when feeding and sorting the tea leaves to ensure the dryness of the tea leaves, so as to solve the technical defects proposed by the background technology and propose tea making, grinding and processing equipment and processing technology based on multi-layer drying.

[0010] The object of the present invention can be achieved by the following technical scheme: a tea making and grinding processing device based on multi-layer drying comprises an outer shell, two layers of partitions are installed inside the outer shell to separate the outer shell into three layers, an upper, middle and lower layer, a primary grinding bin is installed on the uppermost layer of the outer shell, a partition grid is vertically installed in the middle of the middle layer of the outer shell, and a secondary grinding bin is installed on the bottom layer of the outer shell;

[0011] The bottom end of the first-level grinding bin is connected to the middle layer through a discharge port, a feed pipe is installed on one side of the first-level grinding bin, and a drying air inlet is connected to the middle section of the feed pipe;

[0012] The partition grid separates the middle layer of the outer shell into a material recovery bin and a finished product recovery bin, and a recovery hopper is installed at the bottom of the material recovery bin;

[0013] One side of the secondary grinding bin is connected to a second recovery pipe, an end of the second recovery pipe away from the secondary grinding bin is provided with a first recovery pipe, the top of the first recovery pipe is connected to the finished product recovery bin, and the other side of the first recovery pipe is connected to a finished product pipe.

[0014] As a preferred embodiment of the present invention, the drying air inlet is externally connected to a dryer, and high-temperature dry gas is input into the drying air inlet through the dryer. The drying air inlet mixes the high-temperature dry gas with the tea leaves inside the feed pipe to dry the tea leaves in the feed pipe.

[0015] As a preferred embodiment of the present invention, the partition grid is provided with a plurality of groups of fine holes, and when the tea powder passes through the partition grid, the holes on the partition grid intercept and drop the large tea particles.

[0016] As a preferred embodiment of the present invention, the material separation and recovery bin is located below the primary grinding bin and is connected to the discharge port of the primary grinding bin. The discharge port of the primary grinding bin puts the tea leaves that have undergone primary grinding into the material separation and recovery bin. The recovery hopper is funnel-shaped, and the center of the recovery hopper is connected to the feed port of the secondary grinding bin.

[0017] The bottom end of the finished product recovery bin is also funnel-shaped.

[0018] As a preferred embodiment of the present invention, a material separation drying port is opened on one side of the outer shell, and the material separation drying port is connected to the material separation recovery bin. The outside of the material separation drying port is connected to a dryer, and the dryer blows dry gas into the material separation recovery bin through the material separation drying port, and the dry gas in the material separation drying port is blown out laterally.

[0019] As a preferred embodiment of the present invention, the tea powder that has been ground in the first stage at the material distribution and drying port is blown toward the finished product recovery bin, reaches the location of the partition grid, passes through the partition grid and enters the finished product recovery bin, falls in the finished product recovery bin and is recovered through the first recovery pipe.

[0020] As a preferred embodiment of the present invention, the tea leaves that are not fully ground in the first-level grinding bin fall into the recovery hopper, and the second-level grinding bin recovers the tea leaves that are not fully ground through the recovery hopper and performs secondary grinding, and the ground tea powder is collected with the tea powder in the first recovery pipe through the second recovery pipe and discharged through the finished product pipe.

[0021] The present invention also proposes a tea making and grinding process based on multi-layer drying, comprising the following steps:

[0022] Step 1: Drying and feeding the finished tea leaves;

[0023] Step 2: First-level grinding of tea leaves;

[0024] Step 3: Secondary drying after grinding;

[0025] Step 4: Horizontal gas sorting;

[0026] Step 5: Secondary grinding after sorting;

[0027] Step 6: Finished products are assembled and discharged.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. In the present invention, when the tea leaves are ground, drying gas is mixed when the tea leaves are fed, so that the ambient gas can be kept dry when the tea leaves are ground in the primary grinding chamber. After the primary grinding is completed, the ground products are subjected to gas sorting, so that the fully ground tea powder and the incompletely ground tea particles are separated after the primary grinding, so as to be recycled separately, and the incompletely ground tea particles are ground again after recycling to ensure the full grinding of the tea leaves. At the same time, it can avoid excessive grinding of tea powder that has reached the particle size standard during repeated grinding to cause uneven particle size, and it can also avoid the problem that the tea particles are wrapped by the tea powder and affect the effect of the secondary grinding, so as to effectively improve the degree of full grinding of the tea leaves and the uniformity of the particle size of the powder.

[0030] 2. In the present invention, when the tea leaves are gas-sorted, the dry gas discharged from the dryer is used to gas-sort the tea leaves, so that the tea leaves can have different degrees of lateral displacement according to their own particle size and weight under the blowing of the gas, and then the separation screen is combined to block the tea leaves of different particle sizes and diameters, thereby further improving the separation effect of the powder and particles in the tea leaves and avoiding excessive grinding of the tea powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0032] Figure 1 It is a cross-sectional structural schematic diagram of the present invention;

[0033] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0034] Figure 3 This is a structural diagram of the lower layer of the outer shell of the present invention;

[0035] Figure 4 It is a schematic diagram of the upper structure of the outer shell of the present invention;

[0036] Figure 5 It is a schematic diagram of the middle layer structure of the outer shell of the present invention;

[0037] Figure 6 is a process block diagram of the present invention;

[0038] Figure 7 It is a process flow chart of the present invention.

[0039] In the figure: 1. outer shell; 2. primary grinding chamber; 3. secondary grinding chamber; 4. second recovery pipe; 5. first recovery pipe; 6. finished product pipe; 7. partition grid; 8. recovery hopper; 9. material separation and drying port; 10. feed pipe; 11. drying air inlet; 12. finished product recovery chamber; 13. material separation and recovery chamber. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. 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.

[0041] Example 1: Please refer to Figure 1 - Figure 7 As shown, the tea making and grinding processing equipment based on multi-layer drying includes an outer shell 1, two layers of partitions are installed inside the outer shell 1, and the outer shell 1 is divided into three layers of upper, middle and lower. The uppermost layer of the outer shell 1 is equipped with a primary grinding bin 2, and the bottom end of the primary grinding bin 2 is connected to the middle layer through a discharge port. A partition grid plate 7 is vertically installed in the middle of the middle layer, and a secondary grinding bin 3 is installed at the bottom of the outer shell 1;

[0042] A feed pipe 10 is installed on one side of the primary grinding bin 2, and a drying air inlet 11 is connected to the middle section of the feed pipe 10. The drying air inlet 11 is externally connected to a dryer, and high-temperature dry gas is input into the drying air inlet 11 through the dryer. The drying air inlet 11 mixes the high-temperature dry gas with the tea leaves in the feed pipe 10 to dry the tea leaves in the feed pipe 10;

[0043] The middle layer of the outer shell 1 is divided into a material recovery bin 13 and a finished product recovery bin 12 by a separation grid plate 7. The separation grid plate 7 is provided with a plurality of groups of fine holes. When the tea powder passes through the separation grid plate 7, the large tea particles are intercepted and dropped through the holes on the separation grid plate 7, so as to further improve the material separation effect. The material recovery bin 13 is located below the primary grinding bin 2 and is connected to the discharge port of the primary grinding bin 2. The discharge port of the primary grinding bin 2 puts the tea leaves ground at the primary level into the material recovery bin 13. A recovery hopper 8 is installed at the bottom of the material recovery bin 13. The recovery hopper 8 is funnel-shaped, and the center of the recovery hopper 8 is connected to the feed port of the secondary grinding bin 3.

[0044] One side of the secondary grinding chamber 3 is connected with a second recovery pipe 4, and one end of the second recovery pipe 4 away from the secondary grinding chamber 3 is installed with a first recovery pipe 5, the top of the first recovery pipe 5 is connected with a finished product recovery chamber 12, the bottom of the finished product recovery chamber 12 is also funnel-shaped, and the other side of the first recovery pipe 5 is connected with a finished product pipe 6;

[0045] A material distribution drying port 9 is provided on one side of the outer shell 1, and the material distribution drying port 9 is connected to the material distribution recovery bin 13. A dryer is connected to the outside of the material distribution drying port 9, and the dryer blows dry gas into the material distribution recovery bin 13 through the material distribution drying port 9, and the dry gas in the material distribution drying port 9 is blown out laterally;

[0046] While the tea leaves are being dried for the second time, the tea powder that has been ground in the first stage is blown toward the finished product recovery bin 12. Since the tea particles that have not been fully ground have a large mass, the blowing amplitude of the drying gas is small, and they fall into the recovery hopper 8. The tea powder that has been fully ground has a small mass, and the blowing amplitude of the drying gas is large, and it reaches the position of the partition grid 7. The tea powder passes through the partition grid 7 and enters the finished product recovery bin 12, and falls in the finished product recovery bin 12 and is recovered through the first recovery pipe 5.

[0047] The secondary grinding bin 3 recovers the tea leaves that are not fully ground through the recovery hopper 8, and performs secondary grinding. The ground tea leaves powder is collected with the tea leaves powder in the first recovery pipe 5 through the second recovery pipe 4, and discharged through the finished product pipe 6.

[0048] Example 2: Please refer to Figure 1 - Figure 7 As shown, the present invention also proposes a tea making and grinding process based on multi-layer drying, comprising the following steps:

[0049] Step 1: Drying and feeding the finished tea leaves; the roasted tea leaves are transported through the feed pipe 10, and the dryer transports dry gas into the feed pipe 10 through the drying air inlet 11 to further dry the tea leaves passing through the feed pipe 10;

[0050] Step 2: primary grinding of tea leaves; the tea leaves are transported to the primary grinding chamber 2 through the feed pipe 10, the primary grinding chamber 2 performs preliminary grinding on the tea leaves, and the ground tea leaves are discharged through the discharge port below;

[0051] Step 3: Secondary drying after grinding; the material distribution drying port 9 inputs dry gas through an external dryer, and the dry gas is blown out horizontally in the material distribution recovery bin 13. When the ground tea leaves fall, the gas blown out of the material distribution drying port 9 performs secondary drying on the falling tea leaves, further ensuring the drying effect;

[0052] Step 4: Horizontal gas sorting: When the tea leaves are dried for the second time, the fully ground tea powder is light in weight and is more affected by the lateral wind, while the incompletely ground tea particles are heavy in weight and are less affected by the lateral wind. Therefore, the tea powder has different degrees of lateral displacement. By setting the partition grid 7 at a reasonable position, the tea powder passes through the partition grid 7 and enters the finished product recovery bin 12, and the tea particles are left in the material recovery bin 13.

[0053] Step 5: Secondary grinding after sorting; the recovery hopper 8 collects the tea particles and introduces them into the secondary grinding bin 3 for secondary grinding, and the ground tea powder is discharged through the second recovery pipe 4;

[0054] Step six: finished products are combined and discharged; the first recovery pipe 5 collects the powder in the finished product recovery bin 12 through a funnel structure, and combines it with the powder discharged from the second recovery pipe 4 in the first recovery pipe 5, and finally discharges it through the finished product pipe 6, completing the multi-layer drying and multi-stage grinding of the tea leaves, ensuring that the grinding particle size of the tea powder is uniform and the drying degree meets the standards.

[0055] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A tea making and grinding processing device based on multi-layer drying, comprising an outer shell (1), characterized in that: Two layers of partitions are installed inside the outer shell (1) to divide the outer shell (1) into three layers: upper, middle and lower. The uppermost layer of the outer shell (1) is installed with a primary grinding bin (2). A partition grid (7) is vertically installed in the middle of the middle layer of the outer shell (1). The bottom layer of the outer shell (1) is installed with a secondary grinding bin (3). The bottom end of the first-level grinding bin (2) is connected to the middle layer via a discharge port, a feed pipe (10) is installed on one side of the first-level grinding bin (2), and a drying air inlet (11) is connected to the middle section of the feed pipe (10); The partition grid (7) divides the middle layer of the outer shell (1) into a material recovery bin (13) and a finished product recovery bin (12), and a recovery hopper (8) is installed at the bottom of the material recovery bin (13); One side of the secondary grinding bin (3) is connected to a second recovery pipe (4); an end of the second recovery pipe (4) away from the secondary grinding bin (3) is provided with a first recovery pipe (5); the top end of the first recovery pipe (5) is connected to a finished product recovery bin (12); and the other side of the first recovery pipe (5) is connected to a finished product pipe (6).

2. The tea making and grinding processing equipment based on multi-layer drying according to claim 1 is characterized in that: The drying air inlet (11) is externally connected to a drying machine, and high-temperature dry gas is input into the drying air inlet (11) through the drying machine. The drying air inlet (11) mixes the high-temperature dry gas with the tea leaves in the feed pipe (10), thereby drying the tea leaves in the feed pipe (10).

3. The tea making and grinding processing equipment based on multi-layer drying according to claim 2 is characterized in that: The partition grid (7) is provided with a plurality of groups of fine holes. When the tea powder passes through the partition grid (7), the holes on the partition grid (7) intercept and drop the large tea particles.

4. The tea making and grinding processing equipment based on multi-layer drying according to claim 3 is characterized in that: The material separation and recovery bin (13) is located below the primary grinding bin (2) and is connected to the discharge port of the primary grinding bin (2). The discharge port of the primary grinding bin (2) puts the tea leaves that have undergone primary grinding into the material separation and recovery bin (13). The recovery hopper (8) is funnel-shaped, and the center of the recovery hopper (8) is connected to the feed port of the secondary grinding bin (3). The bottom end of the finished product recovery bin (12) is also funnel-shaped.

5. The tea making and grinding processing equipment based on multi-layer drying according to claim 4 is characterized in that: A material separation drying port (9) is provided on one side of the outer shell (1), the material separation drying port (9) is in communication with the material separation recovery bin (13), the outside of the material separation drying port (9) is connected to a dryer, the dryer blows dry gas into the material separation recovery bin (13) through the material separation drying port (9), and the dry gas in the material separation drying port (9) is blown out laterally.

6. The tea making and grinding processing equipment based on multi-layer drying according to claim 5 is characterized in that: The material separation and drying port (9) blows the tea powder after primary grinding toward the direction of the finished product recovery bin (12) to the location of the partition grid (7), passes through the partition grid (7) and enters the finished product recovery bin (12), falls in the finished product recovery bin (12) and is recovered through the first recovery pipe (5).

7. The tea making and grinding processing equipment based on multi-layer drying according to claim 6 is characterized in that: The tea leaves that are not fully ground in the primary grinding bin (2) fall into the recovery hopper (8), and the secondary grinding bin (3) recovers the tea leaves that are not fully ground through the recovery hopper (8) and performs secondary grinding. The ground tea leaves powder is collected with the tea leaves powder in the first recovery pipe (5) through the second recovery pipe (4) and discharged through the finished product pipe (6).

8. The tea making and grinding process based on multi-layer drying is applicable to the tea making and grinding process equipment based on multi-layer drying according to claim 7, characterized in that: The following steps are involved: Step 1: Drying and feeding the finished tea leaves; Step 2: First-level grinding of tea leaves; Step 3: Secondary drying after grinding; Step 4: Horizontal gas sorting; Step 5: Secondary grinding after sorting; Step 6: Finished products are assembled and discharged.

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