Tea Extraction Device

Abstract

The tea extraction device includes: a feeding cage, an extraction tank, an external condenser, a reflux ratio controller, and a storage tank. A side door is provided on one side of the tank body, a steam inlet is provided on the other side, a stainless steel mesh partition is provided on the bottom, a distributor is provided on the upper end of the heating area, the upper end of the heating area is connected to the external condenser inlet through an airflow pipeline, a built-in condensation coil is provided in the internal condensation area and condensed water is circulated through a pipeline, the outlet of the external condenser is connected to the reflux ratio controller through a pipeline, the reflux ratio controller connects the distributor through the reflux pipeline after diversion, and the other way is connected to the storage tank through the collection pipeline, and a liquid outlet valve is provided at the liquid outlet of the liquid collection area. The advantages of the utility model are that steam is used to extract tea leaves, and the reflux ratio controller of the external condenser is used for collection and circulation; the active ingredients in the tea leaves can be effectively extracted by using the tea soup part of the extract collected in the internal condensation area; the continuity and efficiency of production are improved.

Description

Technical Field

[0001] The utility model relates to a natural flavor extraction device, in particular to a tea extraction device. Background Art

[0002] As a multifunctional and healthy drink, tea is one of the most widely consumed drinks in the world, consumed by more than two-thirds of the world's population. Tea has a unique aroma and taste, and is rich in a variety of ingredients that are beneficial to health. Therefore, it has been loved by drinkers for thousands of years.

[0003] Tea-flavored products have a large market in the flavor and fragrance industry, and are widely used in food and beverages such as cakes, beverages and ice cream. Tea fragrance is also used as the main fragrance in many daily chemical products, such as soap, shower gel and shampoo. With the deepening of research and the advancement of the industry, people are beginning to pay attention to the acquisition of natural active ingredients in tea while pursuing the aroma of tea. Therefore, many researchers have begun to use tea as a raw material to obtain natural products such as tea polyphenols and catechins through extraction and refining.

[0004] In tea, the aroma, especially the top aroma, is determined by a series of volatile aroma components, including alcohol, aldehyde, acid and ketone compounds, such as linalool, geranyl aldehyde, ionone, etc. (Food Science, 2019, 40: 341-349); a variety of active ingredients in tea have antioxidant, cancer prevention or cancer inhibition and antiviral effects. According to research, these active ingredients mainly include tea polyphenols, catechins, theanine, tea polysaccharides, tea pigments, etc. (Fujian Tea Industry, 2023, 8: 150-152). Extraction is an effective way to obtain tea aroma extracts and tea active ingredients.

[0005] Tea leaves are usually extracted by solvent (usually water). For example, after the tea leaves are extracted by water, adsorption is performed on a macroporous resin column, and desorption is performed by ethanol to obtain a high-concentration tea aroma extract. Alternatively, after the tea leaves are extracted by water, the concentrate is extracted and impurities are removed using an organic solvent to obtain a crude tea polyphenol. These processes have low equipment requirements, but the disadvantage is that each process is only for one type of product, the efficiency is low and it is easy to generate waste. For example, in the extraction process of the above-mentioned crude tea polyphenols, the tea aroma component is removed as an impurity.

[0006] In summary, if the tea aroma extract and the tea soup rich in active ingredients can be obtained separately through the improvement of equipment during the extraction process, the utilization rate of tea leaves will be greatly improved, and waste emissions can also be reduced, so that production efficiency and benefits are greatly improved. The use of complex extraction equipment can solve this problem to a certain extent. For example, the rotating cone column distillation equipment (SCC) purchased by our company can extract the top aroma substances from tea leaves while obtaining the remaining tea soup containing active ingredients. However, this type of equipment is expensive, has high maintenance requirements, and is difficult to promote. Therefore, it is of great significance to design a new type of tea extraction device that is cheap and can improve the utilization rate of tea leaves and the production efficiency of tea extraction. Summary of the invention

[0007] The purpose of the utility model is to provide a tea extraction device in view of the defects existing in the prior art.

[0008] The main body of the tea extraction device of the utility model is a vertical extraction tank structure, including: a feeding cage 22, an extraction tank, an external condenser 4, a reflux ratio controller 19, and a storage tank 6, characterized in that the tank body 24 is divided into three areas from top to bottom, namely a heating area 1, an internal condensation area 2, and a liquid collection area 3. A side door 7 is provided on one side of the tank body 24, a steam inlet 15 is provided on the other side of the tank body 24, and a temperature gauge port 14 is provided. A pressure gauge port 16 is provided on the top, and a stainless steel mesh partition 18 is provided on the bottom. A distributor 5 is provided at the upper end of the heating area 1, and the upper end of the heating area 1 is connected to the inlet of the external condenser 4 through an air flow pipeline 20. A built-in condensation coil is provided in the internal condensation area 2 and is connected to circulating condensed water through a pipeline. The outlet of the external condenser 4 is connected to the reflux ratio controller 19 through a pipeline 21, and the reflux ratio controller 19 is provided with two output ports, one of which is connected to the distributor 5 through a reflux pipeline 17, and the other output port is connected to the storage tank 6 through a collection pipeline 21. A liquid outlet valve 9 is provided at the liquid outlet of the liquid collection area 3 , and the feeding cage 22 is matched in size with the heating area 1 of the tank body 24 .

[0009] The side door 7 on the tank body 24 is a semicircular door, and the corners are equipped with sealing strips. The feeding cage 22 is a 100-500 mesh stainless steel structure, and the upper opening can be opened and closed.

[0010] The air flow conduit 20 is provided with a valve A10.

[0011] A valve B11 is provided on the collecting pipe 21 connected to the outlet of the external condenser 4 .

[0012] The reflux pipe 17 is provided with a valve C12.

[0013] The collecting pipe 21 connected to the storage tank 6 is provided with a valve D13.

[0014] The advantages of the utility model are:

[0015] 1. The tea extraction device uses high-temperature steam to extract tea leaves, and uses a reflux ratio controller connected to an external condenser to collect and circulate the tea leaves, so that the aroma substances in the tea leaves, especially the top aroma substances, can be fully obtained. At the same time, the collected tea aroma extract has fewer invalid components that contribute little to the aroma;

[0016] 2. The tea extraction device can effectively extract the active ingredients in tea leaves by using the tea soup collected in the internal condensation area while obtaining the natural tea fragrance extract. This tea soup can be concentrated and purified to obtain natural products such as tea polyphenols and catechins;

[0017] 3. The semicircular side door and feeding cage of the tea extraction device make feeding operation convenient and improve the continuity of production, further improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a tea extraction device proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the heating area structure of a tea extraction device proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the feeding cage structure of a tea extraction device proposed by the utility model;

[0021] In the figure: 1 heating area, 2 internal condensation area, 3 liquid collection area, 4 external condenser, 5 distributor, 6 storage tank, 7 side door, 8 handle, 9 liquid outlet valve, 10 valve A, 11 valve B, 12 valve C, 13 valve D, 14 temperature gauge port, 15 steam inlet, 16 pressure gauge port, 17 reflux pipeline, 18 weighing partition, 19 reflux ratio controller, 20 air flow pipeline, 21 collection pipeline, 22 feeding cage, 23 feeding cage switch, 24 tank body. DETAILED DESCRIPTION

[0022] Embodiment 1

[0023] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0024] See also Figure 1 to Figure 3, this embodiment is composed of a feeding cage 22, an extraction tank, an external condenser 4, a reflux ratio controller 19, a storage tank 6 and other parts. The main body of the tea extraction device is a vertical extraction tank structure, and the tank body 24 is divided into three areas from top to bottom, namely, a heating area 1, an internal condensation area 2, and a liquid collection area 3. A side door 7 is provided on one side of the tank body 24, a steam inlet 15 is provided on the other side of the tank body 24, and a temperature gauge port 14 is provided, and a pressure gauge port 16 is provided on the top. The steam temperature at the steam inlet 15 is 120° to 380°, and 380° in this embodiment. A stainless steel mesh partition 18 is provided at the bottom of the heating area 1. A distributor 5 is provided at the upper end of the heating area 1, and the upper end of the heating area 1 is connected to the inlet of the external condenser 4 through an airflow duct 20. A valve A10 is provided on the airflow duct 20. A built-in condensation coil is provided in the internal condensation area 2 and is connected to circulating condensed water through a pipeline. The outlet of the external condenser 4 is connected to the reflux ratio controller 19 via the collecting pipe 21. The reflux ratio controller 19 is provided with two output ports for diversion. One output port is connected to the distributor 5 via the reflux pipe 17. The collecting pipe 21 connected to the outlet of the external condenser 4 is provided with a valve B11, and the reflux pipe 17 is provided with a valve C12. The other output port is connected to the storage tank 6 via the collecting pipe 21. The collecting pipe 21 connected to the storage tank 6 is provided with a valve D13. A liquid outlet valve 9 is provided at the liquid outlet of the liquid collection area 3, and the feeding cage 22 is matched in size with the heating area 1 of the tank body 24. The side door 7 on the tank body 24 is a semicircular door, which is opened and closed by the switch handle 8, and the corners are equipped with sealing strips. A special cylindrical feeding cage 22 is also provided, and the cage body is a 100-500 mesh mesh stainless steel structure, and the upper opening can be opened and closed.

[0025] The above device is used to extract tea leaves. First, weigh the tea leaves and put them into the feeding cage 22, then open the side door 7 and place them on the partition 18. After closing the side door to ensure airtightness, open the condenser water in the condenser areas 2 and 4 respectively, and start the steam to extract. During the extraction process, adjust the reflux ratio controller 19 according to actual needs, and collect two kinds of tea extracts in the liquid collection area 3 and the storage tank 6 respectively.

[0026] In this embodiment, green tea is used as the raw material for extraction, and a reflux ratio controller 19 is set to control the flow ratio of pipelines 17 and 21 to be 5:1. Finally, a natural extract A1 with green tea flavor is obtained in the storage tank 6, and tea soup B1 containing active ingredients such as tea polyphenols is obtained in the liquid collection area 3.

[0027] Embodiment 2

[0028] See also Figure 1 to Figure 3, which is the same as the first embodiment, except that in this embodiment, green tea is used as the raw material for extraction, and a reflux ratio controller 19 is set to control the flow ratio of pipelines 17 and 21 to be 10:1. Finally, a natural extract A2 with green tea aroma and flavor is obtained in the storage tank 6, and tea soup B2 containing active ingredients such as tea polyphenols is obtained in the liquid collection area 3. Through analysis and comparison, the aroma intensity of A2 is greater than that of A1, and the concentration of tea polyphenols in B2 is less than that of B1.

[0029] Embodiment 3

[0030] See also Figure 1 to Figure 3 , which is the same as the first embodiment, except that in this embodiment, green tea is used as the raw material for extraction, and a reflux ratio controller 19 is set to control the flow ratio of pipelines 17 and 21 to be 1:1. Finally, a natural extract A3 with green tea aroma and flavor is obtained in the storage tank 6, and tea soup B3 containing active ingredients such as tea polyphenols is obtained in the liquid collection area 3. Through analysis and comparison, the aroma intensity of A3 is less than that of A1, and the concentration of tea polyphenols in B3 is greater than that of B1.

Claims

1. A tea extraction device, the main body of which is a vertical extraction tank structure, comprising: A feeding cage (22), an extraction tank, an external condenser (4), a reflux ratio controller (19), and a storage tank (6), characterized in that the tank body (24) is divided into three areas from top to bottom, namely a heating area (1), an internal condensation area (2), and a feed liquid collection area (3), a side door (7) is provided on one side of the tank body (24), a steam inlet (15) is provided on the other side of the tank body (24), and a temperature gauge port (14) is provided, a pressure gauge port (16) is provided on the top, and a stainless steel mesh partition (18) is provided on the bottom, a distributor (5) is provided at the upper end of the heating area (1), and the heating area (1) The upper end is connected to the inlet of the external condenser (4) through an air flow pipeline (20); a built-in condensation coil is provided in the internal condensation area (2) and is connected to circulating condensed water through a pipeline; the outlet of the external condenser (4) is connected to the reflux ratio controller (19) through a collecting pipeline (21); the reflux ratio controller (19) is provided with two output ports, one of which is connected to the distributor (5) through a reflux pipeline (17), and the other is connected to the storage tank (6) through a collecting pipeline (21); a liquid outlet valve (9) is provided at the liquid outlet of the liquid collection area (3); and the size of the feeding cage (22) matches the heating area (1) of the tank body (24).

2. The tea extraction device according to claim 1, characterized in that The side door (7) on the tank body (24) is a semicircular door, and sealing strips are installed at the corners.

3. The tea extraction device according to claim 1, characterized in that The feeding cage (22) is a 100-500 mesh stainless steel structure, and the upper opening can be opened and closed.

4. The tea extraction device according to claim 1, characterized in that The air flow conduit (20) is provided with a valve A (10).

5. The tea extraction device according to claim 1, characterized in that A valve B (11) is provided on the collecting pipe (21) connected to the outlet of the external condenser (4).

6. The tea extraction device according to claim 1, characterized in that The return pipe (17) is provided with a valve C (12).

7. The tea extraction device according to claim 1, characterized in that A valve D (13) is provided on the collecting pipe (21) connected to the storage tank (6).

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