Tea polyphenol extraction device

Abstract

The utility model discloses a tea polyphenol extraction device which comprises an extraction tank, an extraction cavity and a heating cavity are arranged on the extraction tank, a mounting port is arranged on the upper side of the extraction cavity, and the heating cavity is distributed around the extraction cavity and stores heat conduction liquid; the heating part is arranged on the extraction tank and is used for heating the heat conduction liquid; the tea barrel comprises a barrel body and an end cover, the barrel body is inserted into the mounting opening and is in lap joint with the extraction tank, the barrel body is provided with a tea cavity with an opening in the top end, filter holes are formed in the peripheral side of the tea cavity and located in the lower side of the mounting opening, and the end cover covers the top end of the barrel body to seal the tea cavity; the locking mechanism is arranged between the extraction tank and the tea canister and is used for locking the tea canister on the extraction tank; the stirring mechanism is arranged on the extraction tank, is positioned on the outer side of the tea leaf barrel and is used for stirring liquid in the extraction cavity. The tea making machine has the advantages of being uniform in temperature control, convenient to clean tea leaves and capable of avoiding residues.

Description

Technical Field

[0001] The utility model relates to the technical field of separation and extraction devices, and particularly relates to a tea polyphenol extraction device. Background Art

[0002] Tea polyphenols, also known as antioxidant essence, vitamin polyphenols, and anti-harassing essence, are complexes of polyhydroxy phenolic compounds in tea leaves. They are composed of more than 30 kinds of phenolic substances, and their main component is catechin compounds, which are the main chemical components with health care functions in tea leaves. Tea polyphenols have various physiological activities such as antioxidant, anti-radiation, anti-aging, reducing blood lipid, reducing blood sugar, antibacterial and enzyme inhibition. In the human application experiment of tea polyphenols extracted from green tea, it is also confirmed that they have the effect of making the body light, so they are also applied to some sports drinks to assist people in controlling their weight. At present, the water extraction method is mostly used for extraction, that is, water is used as a solvent to extract tea polyphenols from tea leaves, and means such as stirring and heating are supplemented during the extraction process to achieve efficient extraction.

[0003] In the existing structural design, there are two problems with the device for extracting tea polyphenols. One is that the temperature is uneven during the extraction process and the extraction effect is poor. The other is that tea leaves are likely to remain in the extraction container, which is not convenient for cleaning and further affects the quality of subsequent extraction. Content of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a tea polyphenol extraction device with uniform temperature control and convenient cleaning of tea leaves to avoid residue.

[0005] According to an embodiment of the utility model, the tea polyphenol extraction device includes:

[0006] An extraction tank, which is provided with an extraction chamber and a heating chamber. An installation opening is arranged on the upper side of the extraction chamber. The heating chamber surrounds the extraction chamber and stores a heat-conducting liquid;

[0007] A heating part, which is arranged on the extraction tank and used for heating the heat-conducting liquid;

[0008] A tea leaf cylinder, which includes a cylinder body and an end cover. The cylinder body is inserted into the installation opening and overlaps with the extraction tank. The cylinder body is provided with a tea leaf chamber with an open top and filter holes are arranged on the periphery of the tea leaf chamber. The filter holes are located below the installation opening. The end cover covers the top of the cylinder body to close the tea leaf chamber;

[0009] A locking mechanism, which is arranged between the extraction tank and the tea leaf cylinder and used for locking the tea leaf cylinder to the extraction tank;

[0010] A stirring mechanism, which is arranged on the extraction tank and outside the tea cylinder, is used to stir the liquid in the extraction cavity.

[0011] The tea polyphenol extraction device according to the embodiment of the present invention has at least the following beneficial effects:

[0012] In this embodiment, by arranging a heating cavity distributed around the extraction cavity, storing heat-conducting liquid in the heating cavity, and setting a heating part, the heat-conducting liquid can be heated by the heating part to uniformly control the temperature in the extraction cavity; and by inserting a tea cylinder into the extraction cavity and separating it from the stirring mechanism, the tea cylinder can be used to hold tea leaves, and the tea leaves can be blocked by the filter holes, allowing only the liquid to pass through. After extraction, only by removing the tea cylinder can the tea leaves be taken away, which is convenient for the operator to clean the tea leaves and avoid the tea leaves remaining in the extraction cavity; among them, the tea cylinder is composed of a cylinder body and an end cover, and is locked to the extraction tank by a locking mechanism. When cleaning the tea leaves, only by releasing the locking of the tea cylinder by the locking mechanism, then pulling out the tea cylinder upward and separating the end cover from the cylinder body can the tea leaves be cleaned; the setting of the locking mechanism can prevent the tea cylinder from shaking and generating large gaps, improve the sealing performance between the tea cylinder and the extraction tank, prevent heat loss, improve the temperature control effect, and at the same time avoid wear and noise.

[0013] According to some embodiments of the present invention, the locking mechanism includes:

[0014] A rotating part, which is rotatably arranged at the top of the extraction tank and has a vertically distributed rotation axis;

[0015] A pressing part, which is vertically adjustable and arranged on the rotating part;

[0016] Among them, during the rotation of the rotating part, it has at least a first state and a second state. When the rotating part is in the first state, the pressing part is located above the end cover and can press down against the end cover. When the rotating part is in the second state, the rotating part and the pressing part both avoid the vertical placement and removal path of the tea cylinder.

[0017] According to some embodiments of the present invention, the pressing part is vertically slidably installed on the rotating part, and the locking mechanism further includes:

[0018] An elastic part, which is arranged between the rotating part and the pressing part and is used to apply a downward elastic force to the pressing part.

[0019] According to some embodiments of the present invention, a concave position is provided on the end cover, and the concave position is used for the bottom end of the pressing part to be embedded to limit the rotation of the rotating part.

[0020] According to some embodiments of the present utility model, the pressing part includes:

[0021] A movable rod vertically and slidably passing through the rotating part, an operating rod is arranged on the upper side of the rotating part of the movable rod, and the operating rod horizontally passes through the movable rod;

[0022] A pressing block fixed to the bottom end of the movable rod;

[0023] Wherein, the elastic part is arranged as a compression spring and sleeved on the movable rod, and the upper and lower ends of the compression spring respectively abut against the rotating part and the pressing block.

[0024] According to some embodiments of the present utility model, an installation seat is arranged on the upper end surface of the extraction tank, the installation seat is located on the circumferential side of the tea cylinder, a vertically extending installation shaft is arranged on the upper end surface of the installation seat and forms a stepped surface facing upwards with the installation shaft, a limiting structure is detachably connected to the installation shaft, and the rotating part is rotatably sleeved on the installation shaft, and the rotating part is located between the stepped surface and the limiting structure.

[0025] According to some embodiments of the present utility model, the limiting structure includes a washer and a limiting nut, the washer is sleeved on the installation shaft, and the limiting nut is threadedly installed on the installation shaft and located above the washer.

[0026] According to some embodiments of the present utility model, the heating cavity is provided with a circulation inlet and a circulation outlet, and the tea polyphenol extraction device further includes:

[0027] A circulation pump, the output end of the circulation pump is connected to the circulation inlet through a first pipeline, and the input end of the circulation pump is connected to the circulation outlet through a second pipeline.

[0028] According to some embodiments of the present utility model, the extraction tank is provided with a vertically penetrating threaded hole at the top end of the heating cavity, the heating part is arranged as an electric heating tube, and the electric heating tube passes through the threaded hole and is in threaded cooperation with the threaded hole.

[0029] According to some embodiments of the present utility model, a positioning ring is arranged on the lower surface of the end cover, and the positioning ring is embedded in the tea cavity to horizontally position the end cover and the cylinder body relatively.

[0030] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0031] The following further describes the present utility model in conjunction with the drawings and embodiments, wherein:

[0032] Figure 1 is a schematic structural diagram of a tea polyphenol extraction device according to an embodiment of the present utility model;

[0033] Figure 2 is a schematic external structure diagram of an extraction tank according to an embodiment of the present utility model;

[0034] Figure 3 is Figure 2 an exploded view of;

[0035] Figure 4 is an exploded schematic installation structure diagram of a locking mechanism according to an embodiment of the present utility model.

[0036] Reference numerals in the drawings:

[0037] extraction tank 100, extraction cavity 101, heating cavity 102, installation opening 103, circulation inlet 104, circulation outlet 105, threaded hole 106, mounting seat 110, mounting shaft 120, washer 121, limit nut 122, liquid inlet pipe 130, liquid discharge pipe 140;

[0038] heating part 200;

[0039] tea cylinder 300, cylinder body 310, tea cavity 311, overlapping plate 312, end cover 320, recess 321, positioning ring 322;

[0040] locking mechanism 400, rotating part 410, pressing part 420, movable rod 421, operating rod 422, pressing block 423, elastic part 430;

[0041] stirring mechanism 500, stirring motor 510, stirring member 520;

[0042] circulation pump 600, first pipeline 610, second pipeline 620. Detailed implementation manners

[0043] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0044] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up and down, etc., is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0045] In the description of the present utility model, "a plurality of" refers to more than two. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0046] In the description of the present utility model, unless otherwise clearly defined, terms such as "arrangement", "installation", and "connection" should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0047] Referring to Figures 1 to 4 As shown, a tea polyphenol extraction device according to an embodiment of the present utility model includes: an extraction tank 100, a heating part 200, a tea leaf cylinder 300, a locking mechanism 400, and a stirring mechanism 500.

[0048] An extraction cavity 101 and a heating cavity 102 are provided inside the extraction tank 100. An installation port 103 is provided on the upper side of the extraction cavity 101. The heating cavity 102 is distributed around the extraction cavity 101, that is, the heating cavity 102 is an annular cavity and is separated from the extraction cavity 101. A heat-conducting liquid is stored in the heating cavity 102, and the heat-conducting liquid can be water, oil, etc. Among them, the extraction tank 100 is provided with a liquid inlet pipe 130 at the top of the extraction cavity 101 and a liquid discharge pipe 140 at the bottom of the extraction cavity 101 to facilitate the input of the extraction liquid and the discharge of the solution after extraction; valves for controlling the on-off of the pipeline are provided on both the liquid inlet pipe 130 and the liquid discharge pipe 140.

[0049] The heating part 200 is provided on the extraction tank 100 and at least partially located in the heating cavity 102. The heating part 200 is used to heat the heat-conducting liquid in the heating cavity 102, so as to heat the liquid in the extraction cavity 101 by heating the heat-conducting liquid. Since the heating cavity 102 is distributed around the extraction cavity 101, the temperature in the extraction cavity 101 can be evenly controlled. It should be noted that after the heating part 200 heats the heat-conducting liquid to a preset temperature range, the heating part 200 can be made to work intermittently to ensure that the temperature of the heat-conducting liquid is within a stable range, and further ensure that the temperature of the extraction liquid is within a stable range.

[0050] The tea cylinder 300 includes a cylinder body 310 and an end cap 320; the cylinder body 310 is inserted into the installation opening 103, and the cylinder body 310 is lapped on the extraction tank 100, that is, the cylinder body 310 is suspended by the extraction tank 100. The cylinder body 310 is provided with a tea cavity 311 with an open top. The cylinder body 310 is provided with filter holes on the peripheral side of the tea cavity 311. The filter holes are located below the installation opening 103. Multiple filter holes can be provided to block tea leaves and prevent the tea leaves from passing through, while allowing liquid to pass through; the end cap 320 is covered on the top end of the cylinder body 310 to close the top opening of the tea cavity 311, preventing foreign substances from entering the outside and avoiding heat loss at the same time. It can be understood that the lower end surface of the end cap 320 abuts against the cylinder body 310, that is, the cylinder body 310 forms a support for the end cap 320.

[0051] The locking mechanism 400 is arranged between the extraction tank 100 and the tea cylinder 300. The locking mechanism 400 is used to lock the tea cylinder 300 to the extraction tank 100 to ensure the sealing performance between the tea cylinder 300 and the extraction tank 100. Obviously, the locking mechanism 400 can release the lock on the tea cylinder 300, so that the tea cylinder 300 can be pulled out of the extraction tank 100 upward.

[0052] The stirring mechanism 500 is arranged in the extraction tank 100 and is located outside the tea cylinder 300, and is used to stir the liquid in the extraction cavity 101 to make the liquid flow fully and mix evenly. It can be imagined that when the stirring mechanism 500 works, the liquid in the extraction cavity 101 flows, which easily causes the tea cylinder 300 to shake, and then a large gap appears between the tea cylinder 300 and the extraction tank 100, resulting in heat loss. At the same time, the shaking of the tea cylinder 300 is also likely to cause wear and noise. Therefore, in this embodiment, the locking mechanism 400 is provided to lock the tea cylinder 300 to the extraction tank 100 to ensure the sealing performance between the two.

[0053] During use, the locking of the end cap 320 by the locking mechanism 400 can be released first, and then the end cap 320 can be opened. The processed tea leaves are poured into the tea chamber 311 of the barrel 310, and the extraction liquid (usually warm water) is added through the liquid inlet pipe 130 or the top opening of the tea chamber 311 to submerge the tea leaves with the extraction liquid. Then, the end cap 320 is covered, and the tea barrel 300 is locked by the locking mechanism 400. Then, the stirring mechanism 500 and the heating part 200 are started. The extraction liquid is stirred by the stirring mechanism 500, and the heat conducting liquid is heated by the heating part 200, thereby heating the extraction liquid in the extraction chamber 101. After heating to the preset temperature range, the heating part 200 enters the intermittent working mode to maintain the temperature of the heat conducting liquid and thus maintain the temperature of the extraction liquid. After the overall working set time of the equipment (i.e., after the extraction of tea polyphenols is completed), the heating of the heating part 200 and the stirring of the stirring mechanism 500 are stopped, and the extraction liquid after extracting tea polyphenols in the extraction chamber 101 is discharged. After cooling for a period of time, the locking of the tea barrel 300 by the locking mechanism 400 is released, and then the tea barrel 300 is pulled out upward to clean the residual tea leaves in the tea chamber 311.

[0054] In the tea polyphenol extraction device according to the embodiment of the present invention, by providing a heating chamber 102 distributed around the extraction chamber 101 and storing the heat conducting liquid in the heating chamber 102, and at the same time providing a heating part 200, the heat conducting liquid can be heated by the heating part 200 to uniformly control the temperature in the extraction chamber 101. Also, by inserting the tea barrel 300 into the extraction chamber 101 and separating it from the stirring mechanism 500, the tea barrel 300 can be used to hold the tea leaves, and the tea leaves can be blocked by the filter holes, allowing only the liquid to pass through. After extraction, the tea barrel 300 only needs to be removed to take away the tea leaves, which can facilitate the operator to clean the tea leaves and avoid the tea leaves remaining in the extraction chamber 101. Among them, the tea barrel 300 is composed of a barrel 310 and an end cap 320, and is locked to the extraction tank 100 by the locking mechanism 400. When cleaning the tea leaves, the locking of the tea barrel 300 by the locking mechanism 400 only needs to be released, then the tea barrel 300 is pulled out upward, and the end cap 320 is separated from the barrel 310 to clean the tea leaves. The setting of the locking mechanism 400 can prevent the tea barrel 300 from shaking to generate large gaps, improve the sealing performance between the tea barrel 300 and the extraction tank 100, prevent heat loss, improve the temperature control effect, and at the same time avoid wear and noise.

[0055] It can be conceived that with reference to Figure 1As shown, the extraction tank 100 includes an outer tank body and an inner tank body, which can be set as an integral structure and form a sandwich space, and this sandwich space is the heating chamber 102, and the internal space of the inner tank body is the extraction chamber 101. It can be understood that the extraction tank 100 can be made of a metal material to facilitate the heating of the liquid in the extraction chamber 101 by the heat transfer liquid. In addition, in order to avoid heat loss, a heat insulation coating can be provided on the outer wall of the outer tank body.

[0056] As can be imagined, with reference to Figure 1 As shown, a lapping plate 312 protruding horizontally outwards is provided at the top edge of the cylinder body 310. The cylinder body 310 is lapped on the extraction tank 100 through the lapping plate 312, and the end cover 320 is attached to the upper surface of the lapping plate 312.

[0057] As can be imagined, in order to accurately control the temperature, a temperature sensor can be provided in the extraction chamber 101 and electrically connected to the heating part 200. When the temperature sensor detects that the temperature of the extraction liquid in the extraction chamber 101 is lower than the preset value, the heating part 200 can be controlled to heat, and when it is higher than the preset value, the heating part 200 can be controlled to stop heating, so that the heating part 200 can work intermittently for temperature control. Obviously, this preset value needs to be determined according to the optimal extraction temperature range of tea polyphenols.

[0058] As can be imagined, in order to prevent the pressure in the extraction chamber 101 and the heating chamber 102 from being too high and improve safety, a suitable pressure sensor and a safety valve can be equipped to effectively monitor and release the excessive pressure. This is a conventional technical means, so it will not be elaborated here.

[0059] As can be imagined, with reference to Figure 1 As shown, the stirring mechanism 500 includes a stirring motor 510 and a stirring member 520. The stirring motor 510 is installed at the outer bottom of the extraction tank 100. The stirring member 520 is connected to the output end of the stirring motor 510 and can rotate under the drive of the stirring motor 510. Its rotation axis is vertically distributed, and the stirring member 520 is located in the extraction chamber 101.

[0060] Obviously, the specific shape of the stirring member 520 can adopt various designs, which are not specifically limited in this embodiment, as long as the stirring member 520 does not interfere with the cylinder body 310 and can stir the extraction liquid on the lower side and the horizontal circumferential side of the cylinder body 310.

[0061] With reference to Figures 1 to 3 As shown, in some embodiments of the present invention, the locking mechanism 400 includes a rotating part 410 and a pressing part 420. The rotating part 410 is rotatably arranged at the top of the extraction tank 100 and the rotation axis is vertically distributed; the pressing part 420 is vertically adjustable on the rotating part 410, that is, the pressing part 420 can be vertically adjusted relative to the rotating part 410.

[0062] Among them, during the rotation process of the rotating part 410, it has at least a first state and a second state. When the rotating part 410 is in the first state, as Figure 2 shown, the pressing part 420 is located above the end cover 320. At this time, the pressing part 420 can be vertically adjusted relative to the rotating part 410 to press downward against the end cover 320, so as to press the end cover 320 and the cylinder body 310 against the extraction tank 100, that is, to lock the tea cylinder 300 to the extraction tank 100. Obviously, when the pressing part 420 presses against the end cover 320, the frictional force between the two can restrict the rotation of the rotating part 410. When the rotating part 410 is in the second state, as Figure 3 shown, both the rotating part 410 and the pressing part 420 avoid the vertical placing and taking path of the tea cylinder 300. At this time, the tea cylinder 300 can be pulled out upward from the extraction tank 100.

[0063] Based on the above embodiments, in use, taking the tea cylinder 300 being locked to the extraction tank 100 as an example, at this time the rotating part 410 is in the first state. When it is necessary to take out the tea cylinder 300, the pressing part 420 can be vertically adjusted first to make the pressing part 420 no longer press against the end cover 320, and then the rotating part 410 is rotated and adjusted to the second state, so that both the rotating part 410 and the pressing part 420 avoid the vertical placing and taking path of the tea cylinder 300.

[0064] It can be understood that after the purification operation is completed, it is necessary to take out the tea cylinder 300 to clean the tea. Therefore, the disassembly and assembly of the tea cylinder 300 should be as convenient as possible to improve production efficiency. In the above embodiments, by adopting the structural settings of the rotating part 410 and the pressing part 420, the tea cylinder 300 can be locked to the extraction tank 100 without using connecting components such as bolts, and there is no need to use additional connecting components to connect between the end cover 320 and the cylinder body 310. When disassembling and assembling the tea cylinder 300, the operation is very convenient.

[0065] It can be imagined that, referring to Figure 1 and Figure 2 shown, in order to facilitate the placing and taking of the cylinder body 310 and the end cover 320, a first handle can be provided on the inner wall of the cylinder body 310, and a second handle can be provided on the upper end surface of the end cover 320.

[0066] It can be imagined that in order to realize the vertical adjustment of the pressing part 420 relative to the rotating part 410, the pressing part 420 can be set as a rod shape and provided with an external thread. At the same time, a vertically penetrating hole is provided on the rotating part 410, and an internal thread is provided in the hole to threadedly install the pressing part 420 on the rotating part 410, so that only by screwing the pressing part 420 can the vertical adjustment of the pressing part 420 be realized.

[0067] Of course, other structures can also be adopted to realize the vertical adjustment of the pressing part 420. For example, referring to Figure 2 andFigure 3 As shown, in some embodiments of the present invention, the clamping portion 420 is vertically slidably installed on the rotating portion 410, and the locking mechanism 400 also includes an elastic portion 430, which is arranged between the rotating portion 410 and the clamping portion 420, and is used to apply a downward elastic force to the clamping portion 420, so that the clamping portion 420 is automatically pressed against the end cover 320 through the elastic force of the elastic portion 430, and the operation is very convenient.

[0068] Reference Figure 1 and Figure 2 As shown, in some embodiments of the present invention, a recess 321 is provided on the end cover 320, and the recess 321 is used for the bottom end of the pressing part 420 to be embedded, so as to limit the rotation of the rotating part 410, so that the rotating part 410 can be kept in the first state, so that the pressing part 420 can keep pressing the end cover 320, and the stability and reliability of the locking can be improved. When it is necessary to release the lock of the tea canister 300, the pressing part 420 needs to be adjusted upward first to disengage from the recess 321, and then the rotating part 410 is rotated.

[0069] It is conceivable that an annular strip may be welded on the upper surface of the end cover 320 to form the recess 321 .

[0070] Reference Figure 2 and Figure 4 As shown, in some embodiments of the utility model, the clamping part 420 includes a movable rod 421 and a pressing block 423. The movable rod 421 is vertically slidably penetrated in the rotating part 410, that is, a hole for the movable rod 421 to pass through is provided on the rotating part 410, and the movable rod 421 is provided with an operating rod 422 on the upper side of the rotating part 410, and the operating rod 422 is horizontally penetrated in the movable rod 421, and the two can be interference fit or connected in the form of thread fit to facilitate the connection and separation of the two; the pressing block 423 is fixed to the bottom end of the movable rod 421; wherein, the elastic part 430 is configured as a compression spring, and the compression spring is sleeved on the movable rod 421, and the upper and lower ends of the compression spring respectively abut against the rotating part 410 and the pressing block 423, so as to apply a downward elastic force to the clamping part 420, and the structure is simple and easy to disassemble and assemble; the configuration of the operating rod 422 can facilitate the operator to lift the clamping part 420.

[0071] It is conceivable that the rotating portion 410 may be configured as a plate-like structure having a certain thickness.

[0072] Reference Figure 2 and Figure 4As shown, in some embodiments of the present utility model, an installation seat 110 is provided on the upper end surface of the extraction tank 100. The installation seat 110 is located on the circumferential side of the tea cylinder 300. A vertically extending installation shaft 120 is provided on the upper end surface of the installation seat 110. A stepped surface facing upward is formed between the installation seat 110 and the installation shaft 120. A limiting structure is detachably connected to the installation shaft 120. A sleeve hole is provided on the rotating part 410, and the rotating part 410 is rotatably sleeved on the installation shaft 120 through the sleeve hole. The rotating part 410 is located between the stepped surface and the limiting structure to limit the vertical displacement of the rotating part 410. In this way, the rotational installation of the rotating part 410 is realized, and the structure is simple and practical; when it is necessary to disassemble the rotating part 410, only the limiting structure needs to be removed, and then the rotating part 410 can be taken out upward, and the operation is very convenient.

[0073] It can be imagined that the limiting structure can be a pin, a split pin, etc., which can be inserted into the installation shaft 120. Of course, the limiting structure can also adopt other structural forms.

[0074] For example, in some embodiments, referring to Figure 2 and Figure 4 As shown, the limiting structure includes a washer 121 and a limiting nut 122. The washer 121 is sleeved on the installation shaft 120. External threads are provided on the installation shaft 120. The limiting nut 122 is threadedly installed on the installation shaft 120 and is located on the upper side of the washer 121. The rotating part 410 is limited by the washer 121 and the limiting nut 122, and the disassembly and assembly of the rotating part 410 are very convenient.

[0075] It can be imagined that in order to improve the locking stability, multiple locking mechanisms 400 can be provided and arranged at equal intervals along the circumferential direction of the tea cylinder 300.

[0076] Referring to Figure 1 As shown, in some embodiments of the present utility model, a circulation inlet 104 and a circulation outlet 105 are provided in the heating chamber 102. The tea polyphenol extraction device further includes a circulation pump 600. The output end of the circulation pump 600 is connected to the circulation inlet 104 through a first pipeline 610, and the input end of the circulation pump 600 is connected to the circulation outlet 105 through a second pipeline 620. That is, through the circulation pump 600, the heat conduction liquid in the heating chamber 102 can be circulated. The advantage of such a setting is that the temperature distribution at each position in the heating chamber 102 can be made more uniform.

[0077] It can be imagined that in order to make the temperature distribution of the heat conduction liquid more uniform, the circulation inlet 104 can be arranged at the top of the heating chamber 102, the circulation outlet 105 can be arranged at the bottom of the heating chamber 102, and the circulation inlet 104 and the circulation outlet 105 are respectively located on the opposite sides of the center line of the heating chamber 102, so that the heat conduction liquid in the heating chamber 102 can circulate fully.

[0078] In addition, in order to reduce heat loss during the circulation of the heat-conducting liquid, a heat-insulating layer can be provided outside the first pipe 610 and the second pipe 620.

[0079] Referring Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the extraction tank 100 is provided with a vertically penetrating threaded hole 106 at the top of the heating chamber 102. The heating part 200 is set as an electric heating tube, which passes through the threaded hole 106 and is in threaded cooperation with it. The bottom end of the electric heating tube is located in the heating chamber 102, and the top end protrudes from the threaded hole 106. The electric heating tube is cheap, easy to use and install, and pollution-free. Obviously, a sealing structure is provided between the electric heating tube and the threaded hole 106.

[0080] It can be imagined that multiple heating parts 200 can be provided, which are evenly spaced along the circumference of the heating chamber 102.

[0081] Referring Figure 1 As shown, in some embodiments of the present invention, a positioning ring 322 is provided on the lower surface of the end cover 320. The positioning ring 322 is embedded in the tea leaf chamber 311 to horizontally position the end cover 320 and the cylinder 310 relative to each other. Moreover, the setting of the positioning ring 322 facilitates the quick positioning and assembly of the end cover 320 and the cylinder 310.

[0082] In addition, in order to ensure the sealing performance, a sealing ring can be embedded on the outer wall of the positioning ring 322 to reduce heat loss.

[0083] The usage method of the tea polyphenol extraction device in one specific embodiment of the present invention is as follows:

[0084] During use, first lift the operating lever 422 to completely disengage the pressing part 420 from the concave position 321. Then, rotate the rotating part 410 by operating the operating lever 422 so that both the rotating part 410 and the pressing part 420 avoid the vertical picking and placing path of the end cover 320. Then open the end cover 320, pour the processed tea leaves into the tea chamber 311 of the cylinder body 310, and add the extraction liquid (usually warm water) into the extraction chamber 101 through the liquid inlet pipe 130 to submerge the tea leaves with the extraction liquid. Then cover the end cover 320, and then lift the pressing part 420 through the operating lever 422 and rotate the rotating part 410 to move the pressing part 420 to the upper side of the end cover 320. After removing the external force, the pressing part 420 presses downward against the end cover 320 under the action of the elastic part 430 to lock the tea cylinder 300. Then start the stirring mechanism 500, the heating part 200, and the circulation pump 600. Use the stirring mechanism 500 to stir the extraction liquid, use the heating part 200 to heat the heat-conducting liquid to heat the extraction liquid in the extraction chamber 101, and at the same time use the circulation pump 600 to make the heat-conducting liquid slowly circulate to make the temperature distribution more uniform. After heating to the preset temperature range, make the heating part 200 enter the intermittent working mode, and the circulation pump 600 works synchronously with the heating part 200 to maintain the temperature of the heat-conducting liquid within a stable range, and then maintain the temperature of the extraction liquid. After the overall working set time of the equipment (that is, after the extraction of tea polyphenols is completed), stop the heating part 200, the stirring mechanism 500, and the circulation pump 600, and open the drain pipe 140 to discharge the extraction liquid after extracting tea polyphenols in the extraction chamber 101. After cooling for a period of time, again release the lock of the end cover 320 by the locking mechanism 400, and then sequentially take out the end cover 320 and the cylinder body 310 upward, and then clean the residual tea leaves in the cylinder body 310. Thus, one extraction of tea polyphenols is completed.

[0085] It should be noted that after extracting tea polyphenols using the tea polyphenol extraction device of this embodiment, other processing equipment can be used to further process the tea polyphenols. For example, relevant equipment can be used to separate, purify, and dry the extracted tea polyphenols to obtain epigallocatechin gallate (EGCG), and then mix it with coffee powder and green tea powder to prepare a tea and coffee solid beverage.

[0086] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0087] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the gist of the present utility model within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A tea polyphenol extraction device, characterized in that, Comprising: An extraction tank (100), the extraction tank (100) being provided with an extraction chamber (101) and a heating chamber (102), an installation opening (103) being provided on the upper side of the extraction chamber (101), the heating chamber (102) being distributed around the extraction chamber (101) and storing a heat-conducting liquid; A heating part (200), the heating part (200) being arranged on the extraction tank (100) for heating the heat-conducting liquid; A tea cylinder (300), the tea cylinder (300) including a cylinder body (310) and an end cap (320), the cylinder body (310) being inserted into the installation opening (103) and lapping on the extraction tank (100), the cylinder body (310) being provided with a tea chamber (311) having an open top end and being provided with filter holes on the peripheral side of the tea chamber (311), the filter holes being located below the installation opening (103), the end cap (320) being covered on the top end of the cylinder body (310) to close the tea chamber (311); A locking mechanism (400), the locking mechanism (400) being arranged between the extraction tank (100) and the tea cylinder (300) for locking the tea cylinder (300) to the extraction tank (100); A stirring mechanism (500), the stirring mechanism (500) being arranged on the extraction tank (100) and located outside the tea cylinder (300) for stirring the liquid in the extraction chamber (101).

2. The tea polyphenol extraction device according to claim 1, characterized in that The locking mechanism (400) includes: A rotating part (410), the rotating part (410) being rotatably arranged at the top end of the extraction tank (100) and having a vertically distributed rotation axis; A pressing part (420), the pressing part (420) being vertically adjustable and arranged on the rotating part (410); Wherein, during the rotation of the rotating part (410), it at least has a first state and a second state. When the rotating part (410) is in the first state, the pressing part (420) is located above the end cap (320) and can press down against the end cap (320). When the rotating part (410) is in the second state, the rotating part (410) and the pressing part (420) both avoid the vertical placing and taking path of the tea cylinder (300).

3. The tea polyphenol extraction device according to claim 2, wherein, The pressing part (420) is vertically slidably installed on the rotating part (410), and the locking mechanism (400) further includes: An elastic part (430), the elastic part (430) being arranged between the rotating part (410) and the pressing part (420) for applying a downward elastic force to the pressing part (420).

4. The tea polyphenol extraction device according to claim 3, characterized in that, A concave position (321) is provided on the end cap (320), and the concave position (321) is used for the bottom end of the pressing part (420) to be embedded therein to limit the rotation of the rotating part (410).

5. The tea polyphenol extraction device according to claim 3, wherein, The pressing part (420) includes: A movable rod (421) vertically and slidably penetrates through the rotating part (410). An operating rod (422) is arranged on the upper side of the rotating part (410) of the movable rod (421), and the operating rod (422) horizontally penetrates through the movable rod (421). A pressing block (423) is fixed to the bottom end of the movable rod (421). Among them, the elastic part (430) is arranged as a compression spring and sleeved on the movable rod (421), and the upper and lower ends of the compression spring respectively abut against the rotating part (410) and the pressing block (423).

6. The tea polyphenol extraction device according to claim 2, characterized in that, An installation seat (110) is arranged on the upper end surface of the extraction tank (100). The installation seat (110) is located on the circumferential side of the tea cylinder (300). A vertically extending installation shaft (120) is arranged on the upper end surface of the installation seat (110), and a stepped surface facing upward is formed between the installation seat (110) and the installation shaft (120). A limiting structure is detachably connected to the installation shaft (120), and the rotating part (410) is rotatably sleeved on the installation shaft (120). The rotating part (410) is located between the stepped surface and the limiting structure.

7. The tea polyphenol extraction device according to claim 6, characterized in that, The limiting structure includes a washer (121) and a limiting nut (122). The washer (121) is sleeved on the installation shaft (120), and the limiting nut (122) is threadedly installed on the installation shaft (120) and located on the upper side of the washer (121).

8. The tea polyphenol extraction device according to claim 1, characterized in that, The heating chamber (102) is provided with a circulation inlet (104) and a circulation outlet (105). The tea polyphenol extraction device further includes: A circulation pump (600). The output end of the circulation pump (600) is connected to the circulation inlet (104) through a first pipeline (610), and the input end of the circulation pump (600) is connected to the circulation outlet (105) through a second pipeline (620).

9. The tea polyphenol extraction device according to claim 1, characterized in that, The extraction tank (100) is provided with a vertically penetrating threaded hole (106) at the top end of the heating chamber (102). The heating part (200) is arranged as an electric heating tube, and the electric heating tube penetrates through the threaded hole (106) and is in threaded cooperation with the threaded hole (106).

10. The tea polyphenol extraction device according to claim 1, wherein, A positioning ring (322) is arranged on the lower surface of the end cover (320). The positioning ring (322) is embedded in the tea cavity (311) to horizontally and relatively position the end cover (320) and the cylinder body (310).

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