Extraction device for tea beverage production and production process of tea beverage

Abstract

The invention discloses an extraction device for tea beverage production, and relates to the field of tea beverage extraction.The extraction device comprises a sliding rail, a heating device, a high-temperature extraction tank and a plurality of low-temperature extraction tanks, a lifting base is slidably connected to the sliding rail, a first driving part is arranged on the sliding rail, a storage tank is connected to the lifting base in a lifting mode, and a second driving part is arranged on the lifting base; a second driving rod is arranged on the second driving piece; extraction cavities are formed in the high-temperature extraction tank and the low-temperature extraction tank, inner net barrels are arranged in the extraction cavities, stirring cavities are formed in the inner net barrels, and a plurality of filtering holes are formed in the peripheral side of each inner net barrel; the storage tank comprises a sealing plate for sealing the extraction cavity, the bottom of the sealing plate is in lifting connection with a lifting tank, when the sealing plate closes the extraction cavity, the second driving rod drives the lifting tank to ascend and descend in the stirring cavity, and a plurality of reverse punching holes are formed in the bottom of the lifting tank. The tea extraction effect is improved, the tea beverage production effect is ensured, and the tea beverage extraction utilization rate is increased.

Description

Technical Field

[0001] This application relates to the field of tea beverage extraction, and in particular to extraction apparatus and production processes for tea beverages. Background Technology

[0002] Currently, the working principle of tea beverage extraction is to use technologies such as high pressure, low temperature, and supercritical fluid extraction to extract the beneficial components from tea leaves. The extracted tea liquid is then concentrated, impurities and off-flavors are removed, and high-quality tea beverages are produced. With the rapid development of China's tea beverage market and the improvement of living standards, consumers have increasingly higher demands for natural, original-flavor, and healthy tea beverages. This places increasingly higher requirements on the tea raw materials and beverage production technologies used in tea beverage production.

[0003] In the prior art, a tea beverage extraction device includes an extraction tank with an extraction chamber inside. A storage tank is vertically connected to the extraction chamber, and the storage tank has a storage chamber for holding tea leaves. Filter holes are provided around the periphery of the storage tank. In use, the tea leaves are placed in the storage chamber, and then the storage tank is placed into the extraction chamber for extraction in high-temperature, high-pressure water, thus completing the tea extraction process.

[0004] Regarding the aforementioned patents, the existing technology directly places the storage tank into the extraction chamber and extracts the tea leaves by soaking them in liquid. This reduces the extraction efficiency of the tea leaves, decreases the utilization rate of the extracted tea beverages, and the long soaking time affects the taste and production of the tea beverages. Therefore, improvements are urgently needed. Summary of the Invention

[0005] In order to improve the extraction effect of tea leaves, ensure the effect of tea beverage production, and increase the utilization rate of tea beverage extraction, this application provides an extraction device for tea beverage production.

[0006] The extraction apparatus for tea beverage production provided in this application adopts the following technical solution: It includes a slide rail, a heating device, and a high-temperature extraction tank and several low-temperature extraction tanks disposed at the bottom of the slide rail. A lifting seat is slidably connected to the slide rail. A first driving member is disposed on the slide rail for driving the lifting seat to slide. A storage tank is slidably connected to the lifting seat. A second driving member is disposed on the lifting seat. A second driving rod is disposed on the second driving member for controlling the lifting of the storage tank. Both the high-temperature extraction tank and the low-temperature extraction tank have extraction chambers inside. An inner mesh barrel is installed inside the extraction chamber. A stirring chamber for placing the storage tank is opened inside the inner mesh barrel. Multiple filter holes are opened around the inner mesh barrel. An extraction chamber is formed between the inner mesh barrel and the extraction chamber. A low-temperature pipe is connected between the heating device and the low-temperature extraction tank. A high-temperature pipe is connected between the heating device and the high-temperature extraction tank. A liquid pump is installed on the high-temperature pipe. The storage tank includes a sealing plate for sealing the extraction chamber, an observation sealing plate is hinged to the sealing plate, and a lifting tank is lifted and lowered at the bottom of the sealing plate. The lifting tank is used to store tea leaves. The side wall of the lifting tank abuts against the inner wall of the stirring chamber. A second drive rod passes through the sealing plate and is connected to the lifting tank. When the sealing plate closes the extraction chamber, the second drive rod drives the lifting tank to move up and down within the stirring chamber. The bottom of the lifting tank has multiple backflush holes.

[0007] By adopting the above technical solution, during operation, the tea leaves are first placed in a low-temperature extraction tank for low-temperature extraction. After a period of extraction, the liquid extracted at low temperature is heated and injected into a high-temperature extraction tank. The tea leaves are then placed in the high-temperature extraction tank for high-temperature extraction, thus completing the low-temperature and high-temperature extraction. Simultaneously, during extraction, the sealing plate closes the extraction chamber, allowing the lifting tank to move up and down within the lifting chamber. This allows the tea leaves to reciprocate within the lifting chamber. During the sliding process of the lifting tank, the liquid, under the action of the backflush holes and filter holes, continuously impacts the tea leaves, achieving the purpose of stirring the tea leaves and thus allowing for better extraction. After extraction, the second driving component pulls the lifting tank to collect the tea leaves. The tea leaves expand during soaking, and the lifting tank can squeeze the tea leaves to achieve the purpose of drying them. After completing the high-temperature extraction, the storage tank is placed in the low-temperature extraction tank, where fresh water is used for a final soaking, further improving the extraction utilization rate of the tea beverage and enhancing the extraction effect.

[0008] Preferably, the sealing plate has a rotating annular cavity, and the lifting tank is inserted into the rotating annular cavity. A plurality of switch plates are rotatably connected to the end of the rotating annular cavity. The lifting tank pushes the switch plates into the rotating annular cavity. When the sealing plate abuts against the inner mesh barrel, the inner mesh barrel pushes the switch plates to rotate and pushes the sealing plate away from the lifting tank. A locking plate is provided on the side of the switch plate away from the sealing plate. Locking blocks are provided on both sides of the locking plate. The side wall of the stirring chamber has an inner locking annular groove that engages with the locking blocks. The outer wall of the lifting tank has an outer locking annular groove that engages with the locking blocks. When the locking plate rotates, the two locking blocks engage with the inner locking annular groove and the outer locking annular groove, respectively.

[0009] By adopting the above technical solution, when the storage tank is transferred, the lifting tank pushes the switch plate into the rotating ring cavity, so that the locking block can be engaged in the outer locking ring groove. This allows the sealing plate and the lifting tank to be connected more stably, improving the stability of the storage tank. When the sealing plate abuts against the inner mesh barrel, the inner mesh barrel pushes the switch plate and drives the locking block to be engaged in the inner locking ring groove. This allows the sealing plate to be connected more stably to the inner mesh barrel, improving the stability of the sealing plate.

[0010] Preferably, the high-temperature extraction tank is provided with a guide ring around its periphery that engages with the sealing plate. The inner diameter of the guide ring gradually increases in the direction away from the high-temperature extraction tank, and a high-temperature sealing ring is provided on the side wall of the guide ring. The side wall of the lifting tank is provided with a sealing retaining ring. The thickness of the sealing retaining ring first increases and then decreases in the vertical direction. Both the upper and lower side walls of the sealing retaining ring are formed with pressing inclined surfaces. The pressing inclined surfaces abut against the locking block. A tensioning plane is provided at the bottom of the inner locking ring groove. The tensioning plane is horizontally opened, and the sealing retaining ring pushes the locking block towards the tensioning plane.

[0011] By adopting the above technical solution, the locking block may protrude during use. Using a sealing ring in conjunction with this can improve the sealing between the lifting tank and the inner wall of the stirring chamber, reducing tea leakage and improving the stability of tea extraction. Furthermore, when the switch plate is pressed onto the inner mesh tank, the locking plate deforms to some extent. At this time, a gap exists in the depth of the locking block pushing the inner locking ring groove. The pressure slope helps push the locking block against the tensioning plane. Since the locking plate is connected by rotation, during the process of pushing the locking plate, the locking block abuts against the horizontal tensioning plane, simultaneously pulling the sealing plate to better press the high-temperature extraction tank. Combined with the high-temperature sealing strip, this better ensures the overall sealing of the high-temperature extraction tank.

[0012] Preferably, the depth direction of the filter hole is inclined inward along the tangent direction of the inner mesh barrel, and the depth direction of the backflush hole is inclined towards the lifting tank along the inclined direction of the filter hole.

[0013] By adopting the above technical solution, and using the inclined opening of the backflush hole and filter hole, when the lifting tank descends, it brings negative pressure to the stirring chamber, which allows the liquid to be injected into the stirring chamber in a rotating manner. This allows the liquid to fully rinse the tea leaves, improve the utilization rate of tea extraction, and ensure the efficiency of tea extraction.

[0014] Preferably, the lifting tank is equipped with a stirring fan blade, which is rotatably connected to the bottom of the sealing plate.

[0015] By adopting the above technical solution, the stirring blades are installed inside the storage tank. On one hand, when liquid is injected into the stirring chamber, the impact of the stirring blades limits the rotation of the tea leaves within the chamber, allowing for better compression and rinsing, thus improving the extraction efficiency. On the other hand, when the lifting tank rises, it stirs the tea leaves evenly, facilitating subsequent compression and ensuring more uniform extrusion of the expanded tea leaves, thus enhancing the convenience of using the lifting tank. Finally, the stirring blades prevent the expanded tea leaves from clumping together after compression, thus improving the dispersion of the tea leaves and making rinsing easier.

[0016] Preferably, a drain pipe is provided at the bottom of the high-temperature extraction tank, and a drain switch is provided on the drain pipe. A heat exchange tube is wound around the periphery of the low-temperature extraction tank, and the drain pipe is connected to the heat exchange tube.

[0017] By adopting the above technical solution, the heat of the hot liquid in the high-temperature extraction tank is transferred to the liquid in the low-temperature extraction tank through the heat exchange tube. On the one hand, the discharged liquid can be cooled down quickly, which is convenient for subsequent processing. On the other hand, the liquid in the low-temperature extraction tank can be preliminarily heated, which raises the liquid temperature and facilitates subsequent low-temperature extraction, thereby improving the low-temperature extraction effect.

[0018] Preferably, the high-temperature extraction tank is provided with a gas injection pipe on its side wall, which is used to inject high-pressure gas into the extraction chamber; a filter seat is provided on the drain pipe, and a filter chamber is provided in the filter seat, and multiple filter plates are provided in the filter chamber.

[0019] By adopting the above technical solution, during extraction, the gas pressure in the extraction chamber can be controlled through the gas injection pipe, which can assist in the extraction of tea beverages and improve the extraction efficiency. After soaking for a period of time, not only under the pressure of the extraction chamber itself, but also with the injection of pressurized gas from the gas injection chamber, the extracted liquid can flow more smoothly through the heat exchange tube through the drain pipe, improving the convenience of liquid discharge.

[0020] Preferably, the inner mesh tank includes an inner mesh ring and a control filter plate. The control filter plate has a bottom filter hole at its bottom and is slidably connected to the stirring chamber. A compression spring is provided on the control filter plate, and the side of the compression spring away from the control filter plate abuts against the bottom of the lifting tank. A limit stop ring is provided on the inner wall of the inner mesh ring, and the limit stop ring is used to limit the sliding distance of the control filter plate.

[0021] By adopting the above technical solution, there are two operating conditions. In the first condition, when the lifting tank descends, the control filter plate abuts against the limit baffle. The pressure in the stirring chamber pushes the liquid into the lifting tank through the backflush hole, thereby allowing the liquid to fully rinse the tea leaves and ensuring that the squeezed liquid can be more easily dispersed. In the second condition, when the lifting tank rises, initially, the lifting tank can be assisted to rise under the action of the compression spring. When the pressure in the stirring chamber is too high, the control filter plate can be pulled to rise simultaneously. After a period of squeezing, the control filter plate automatically resets under the action of the compression spring, reducing the resistance when the lifting tank rises and improving the convenience of squeezing tea leaves.

[0022] Preferably, the inner wall of the inner mesh ring is provided with a threaded hole, which is located near the bottom. Multiple mounting seats are arranged in a circumferential array at the bottom of the extraction chamber. The outer wall of the mounting seat is provided with a threaded section, which is threadedly connected to the threaded hole. The inner mesh ring is threadedly connected to the mounting seat. The thickness of the mounting seat gradually decreases along the direction close to the inner mesh barrel. A guide arc surface is provided on one side of the mounting seat. The depth direction of the bottom filter hole is consistent with the inclination direction of the filter hole. The flow direction of the liquid flushed out of the bottom filter hole after passing through the guide arc surface is consistent with the inclination direction of the filter hole.

[0023] By adopting the above technical solution, the flow direction of the liquid discharged from the bottom can better meet the suction of the filter hole, improve the convenience of the filter hole to draw liquid, and also enable the liquid to rinse the tea leaves more efficiently.

[0024] It also includes the production process of tea beverages, the specific steps of which are as follows; S1: Place tea leaves, inject tea leaves into the lifting chamber through the observation sealing plate, and then close the observation sealing plate; S2: Low-temperature steeping. The tea leaves are placed in a low-temperature extraction tank for extraction. The extraction time is 15-30 minutes. The second drive unit controls the lifting tank to rise and fall periodically in the stirring chamber. S3: Liquid transfer. The liquid in the low-temperature extraction tank is heated by the heating device and then injected into the high-temperature extraction tank, so that the temperature in the high-temperature extraction tank reaches 68-80 degrees Celsius. S4: High-temperature extraction. The tea leaves are placed in a high-temperature extraction tank for extraction. The extraction time is 1 to 3 minutes. The second drive unit controls the lifting tank to move up and down periodically in the stirring chamber. S5: Liquid discharge and heat exchange, the liquid in the high-temperature extraction tank is discharged, and the liquid in the low-temperature extraction tank is heated through the heat exchange tube to increase the liquid temperature in the low-temperature extraction tank; S6: Repeat extraction, put the storage tank back into the low temperature extraction tank, soak for a certain period of time, and the second drive unit controls the lifting tank to move up and down periodically in the stirring chamber; S7: Organize and retrieve materials, remove the storage container, and take out the tea leaves from the storage container.

[0025] By adopting the above technical solution and using a three-stage extraction method, low-temperature extraction and high-temperature extraction can extract the tea more comprehensively. After extraction, the tea is extracted again with clean water, which can extract the tea more thoroughly and improve the utilization rate of tea extraction.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. During operation, tea leaves are first placed in a low-temperature extraction tank for low-temperature extraction. After a period of extraction, the liquid extracted at low temperature is heated and injected into a high-temperature extraction tank. The tea leaves are then placed back into the high-temperature extraction tank for high-temperature extraction, thus completing the low-temperature and high-temperature extraction. Simultaneously, during extraction, the sealing plate closes the extraction chamber, allowing the lifting tank to move up and down within the chamber. This allows the tea leaves to reciprocate within the lifting tank. During the sliding process of the lifting tank, the liquid continuously impacts the tea leaves through the backflushing holes and filter holes, achieving the purpose of stirring the tea leaves and thus improving extraction. After extraction, the second drive unit pulls the lifting tank to collect the tea leaves. The tea leaves expand during soaking, and the lifting tank squeezes the leaves to achieve the purpose of drying them. After high-temperature extraction, the storage tank is placed in the low-temperature extraction tank, where fresh water is used for a final soaking, further improving the extraction utilization rate of the tea beverage and enhancing its extraction effect. 2. When the storage tank is transferred, the lifting tank pushes the switch plate into the rotating ring cavity, which allows the locking block to engage in the outer locking ring groove. This allows the sealing plate and the lifting tank to be connected more stably, improving the stability of the storage tank. When the sealing plate abuts against the inner mesh barrel, the inner mesh barrel pushes the switch plate and drives the locking block to engage in the inner locking ring groove. This allows the sealing plate to be connected more stably to the inner mesh barrel, improving the stability of the sealing plate. 3. There are two operating conditions. In the first condition, when the lifting tank descends, the control filter plate abuts against the limit baffle. The pressure in the stirring chamber pushes the liquid into the lifting tank through the backflush hole, which allows the liquid to fully rinse the tea leaves and ensures that the squeezed liquid can be more easily dispersed. In the second condition, when the lifting tank rises, it can initially be assisted to rise under the action of the compression spring. When the pressure in the stirring chamber is too high, it can pull the control filter plate to rise at the same time. After squeezing for a period of time, the control filter plate will automatically return to its original position under the action of the compression spring, reducing the resistance when the lifting tank rises and improving the convenience of squeezing tea leaves. Attached Figure Description

[0027] Figure 1This is a schematic diagram of the overall structure of the extraction device for tea beverage production according to Embodiment 1 of this application; Figure 2 This is a schematic diagram illustrating the inner mesh bucket structure, as shown in Embodiment 1 of this application. Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle; Figure 4 This is a schematic diagram illustrating the main structure of the control filter plate in Embodiment 2 of this application; Reference numerals: 1. Second drive rod; 2. Sealing plate; 3. Guide ring; 4. High-temperature extraction tank; 5. Second drive component; 6. First drive component; 7. Lifting seat; 8. Slide rail; 9. High-temperature pipe; 10. Liquid pump; 11. Heating device; 12. Drain switch; 13. Drain pipe; 14. Filter seat; 15. Low-temperature pipe; 16. Low-temperature extraction tank; 17. Heat exchanger tube; 18. Extraction chamber; 19. Extraction chamber; 20. Stirring chamber; 21. Inner mesh tank; 22. Filter hole; 23. Observation seal plate; 24. 25. Agitator blades; 26. Lifting tank; 27. Backflush hole; 28. Rotating ring cavity; 29. ​​Switch plate; 30. Sealing retaining ring; 31. Pressing inclined surface; 32. Locking plate; 33. Outer snap-fit ​​ring groove; 34. Locking block; 35. Inner snap-fit ​​ring groove; 36. Tensioning plane; 37. Compression spring; 38. Bottom filter hole; 39. Guide arc surface; 40. Mounting base; 41. Control filter plate; 42. Limiting retaining ring; 43. Threaded hole; 44. Threaded section; 45. High-temperature sealing ring; 46. Air injection pipe; 47. Inner mesh ring. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1 - Figure 4 This application will be described in further detail.

[0029] This application discloses an extraction apparatus for tea beverage production and a tea beverage production process.

[0030] Example 1 Reference Figure 1An extraction device for tea beverage production includes a slide rail 8, a heating device 11, and a high-temperature extraction tank 4 and two low-temperature extraction tanks 16 installed at the bottom of the slide rail 8. The slide rail 8 is directly installed on the top of the factory, and the high-temperature extraction tank 4 and the low-temperature extraction tanks 16 are then installed at the bottom of the slide rail 8. A lifting seat 7 is slidably connected to the slide rail 8. A first driving component 6, which is a drive motor, is fixed on the slide rail 8 to drive the lifting seat 7 to slide. The first driving wheel is rotatably connected to the first driving component 6 and cooperates with the slide rail 8 to drive the lifting seat 7 to slide. A storage tank is lifted and lowered on the lifting seat 7. A second driving component 5, which is a drive cylinder, is fixed on the lifting seat 7. A second driving rod 1, which controls the lifting and lowering of the storage tank, is fixed on the second driving component 5. Both the high-temperature extraction tank 4 and the low-temperature extraction tank 16 have extraction chambers 18 inside. An inner mesh tank 21 is installed inside the extraction chamber 18. A stirring chamber 20 for placing the storage tank is opened inside the inner mesh tank 21. Filter holes 22 are opened on the periphery of the inner mesh tank 21. An extraction chamber 19 is formed between the inner mesh tank 21 and the extraction chamber 18. A low-temperature pipe 15 is connected between the heating device 11 and the low-temperature extraction tank 16. A high-temperature pipe 9 is connected between the heating device 11 and the high-temperature extraction tank 4. A liquid pump 10 is installed on the high-temperature pipe 9, so that the liquid in the low-temperature extraction tank 16 can be injected into the high-temperature extraction tank 4 after passing through the heating device 11, and the temperature of the liquid in the high-temperature extraction tank 4 is controlled at 68-80 degrees Celsius.

[0031] The storage tank includes a sealing plate 2 for sealing the extraction chamber 18. The sealing plate 2 is disc-shaped, and an observation sealing plate 23 is hinged to the sealing plate 2. A locking pin is fixed to the observation sealing plate 23, allowing for easier placement of tea leaves and observation of the interior of the storage tank. A lifting tank 25 is vertically connected to the bottom of the sealing plate 2. The lifting tank 25 has a U-shaped cross-section and is used to store tea leaves. The side wall of the lifting tank 25 abuts against the inner wall of the stirring chamber 20. A second drive rod 1 passes through the sealing plate 2 and connects to the lifting tank 25. When the sealing plate 2 closes the extraction chamber 18, the second drive rod 1 drives the lifting tank 25 to move up and down within the stirring chamber 20. The bottom of the lifting tank 25 has multiple backflush holes 26. Under the action of the backflush holes 26 and the filter holes 22, the liquid continuously impacts the tea leaves, achieving the purpose of stirring the tea leaves and thus allowing for better extraction.

[0032] The heating device 11 includes a heating base with heating elements inside. The heating elements can heat the liquid, so that the liquid in the low-temperature extraction tank 16 can be heated before being injected into the high-temperature extraction tank 4, thus improving the convenience of liquid heating.

[0033] A rotating annular cavity 27 is provided on the sealing plate 2. The rotating annular cavity 27 is circular. The lifting tank 25 is inserted into the rotating annular cavity 27. Several switch plates 28 are rotatably connected to the end of the rotating annular cavity 27. The lifting tank 25 pushes the switch plates 28 into the rotating annular cavity 27. When the sealing plate 2 abuts against the inner mesh tank 21, the inner mesh tank 21 pushes the switch plates 28 and pushes the sealing plate 2 away from the lifting tank 25. A locking plate 31 is fixed on the side of the switch plate 28 away from the sealing plate 2. Locking blocks 33 are integrally formed on both sides of the locking plate 31. The side wall of the stirring chamber 20 is provided with an inner locking annular groove 34 that engages with the locking blocks 33. The outer wall of the lifting tank 25 is provided with an outer locking annular groove 32 that engages with the locking blocks 33. When the locking plate 31 rotates, the two locking blocks 33 engage with the inner locking annular groove 34 and the outer locking annular groove 32 respectively. Therefore, when the storage tank is not placed in the stirring chamber 20, the locking block 33 can engage with the outer locking ring groove 32 to lock the lifting tank 25, thereby improving the convenience of locking the lifting tank 25; when the storage tank is placed in the stirring chamber 20, the locking block 33 can engage with the inner locking ring groove 34 to lock the sealing plate 2, thereby making the connection between the sealing plate 2 and the high-temperature extraction tank 4 or the low-temperature extraction tank 16 more secure.

[0034] Both the high-temperature extraction tank 4 and the low-temperature extraction tank 16 are fixed with guide rings 3 that interlock with the sealing plate 2. The guide rings 3 are inclined upwards away from the high-temperature extraction tank 4, and their inner diameter gradually increases in the direction away from the high-temperature extraction tank 4. A high-temperature sealing ring 44 is fixed to the side wall of the guide ring 3. The high-temperature sealing ring 44 is made of high-temperature resistant rubber strip. A sealing retaining ring 29 is fixed to the side wall of the lifting tank 25. The sealing retaining ring 29 has a boss-shaped cross-section. The thickness of the sealing retaining ring 29 first increases and then decreases in the vertical direction. Both the upper and lower side walls of the sealing retaining ring 29 are formed with pressing inclined surfaces 30. The pressing inclined surfaces 30 abut against the locking block 33. The bottom of the inner locking ring groove 34 has a tensioning plane 35. The tensioning plane 35 is horizontally opened. The sealing ring 29 pushes the locking block 33 into the tensioning plane 35. Thus, when the switch plate 28 is pressed on the inner mesh barrel 21, the locking plate 31 is deformed to a certain extent. At this time, the locking block 33 pushes the inner locking ring groove 34 into a gap. Under the action of the pressing slope 30, the locking block 33 can be pushed to press against the tensioning plane 35. Since the locking plate 31 is connected by rotation, during the process of pushing the locking plate 31, the locking block 33 abuts against the horizontal tensioning plane 35, which will simultaneously pull the sealing plate 2 to better press the high temperature extraction tank 4. With the help of the high temperature sealing strip, the sealing performance of the entire high temperature extraction tank 4 can be better ensured.

[0035] The filter hole 22 is inclined inward along the tangent of the inner mesh barrel 21 in the depth direction, and the backflush hole 26 is inclined towards the lifting tank 25 along the inclined direction of the filter hole 22 in the depth direction. When the lifting tank 25 descends and brings negative pressure to the stirring chamber 20, the liquid can be injected into the stirring chamber 20 in a rotating manner, so that the liquid can fully rinse the tea leaves and improve the utilization rate of tea extraction.

[0036] A stirring blade 24 is fixed inside the lifting tank 25, and the stirring blade 24 is rotatably connected to the bottom of the sealing plate 2. On one hand, when liquid is injected into the stirring chamber 20, it impacts the stirring blade 24, thus limiting the rotation of the tea leaves within the stirring chamber 20. This allows for better squeezing and rinsing of the tea leaves, improving extraction efficiency. On the other hand, when the lifting tank 25 rises, it stirs the tea leaves evenly, facilitating subsequent squeezing and ensuring more uniform squeezing of the expanded tea leaves, thus enhancing the ease of use of the lifting tank 25. Finally, the squeezing blade 24 reduces the clumps of the expanded tea leaves after squeezing, making them easier to disperse and improving rinsing convenience.

[0037] A drain pipe 13 is fixed to the bottom of the high-temperature extraction tank 4, and a drain switch 12 is installed on the drain pipe 13. A heat exchange tube 17 is wound around the periphery of the low-temperature extraction tank 16, and the drain pipe 13 is connected to the heat exchange tube 17. This allows for the initial heating of the liquid in the low-temperature extraction tank 16, raising the liquid temperature to facilitate subsequent low-temperature extraction and improve the low-temperature extraction effect.

[0038] A gas injection pipe 45 is fixed to the side wall of the high-temperature extraction tank 4. The gas injection pipe 45 is used to inject high-pressure gas into the extraction chamber 18. A filter seat 14 is fixed on the drain pipe 13. The filter seat 14 has a filter chamber, and multiple filter discs are fixed in the filter chamber. This allows for better filtration of the discharged liquid.

[0039] The advantage of the extraction device for tea beverage production in this embodiment is that the liquid extracted at low temperature is heated and injected into the high-temperature extraction tank 4, and then the tea leaves are placed in the high-temperature extraction tank 4 for high-temperature extraction, thus completing the low-temperature and high-temperature extraction. Simultaneously, during extraction, the sealing plate 2 closes the extraction chamber 18, causing the lifting tank 25 to move up and down within the lifting chamber. This allows the tea leaves to reciprocate within the lifting chamber. During the sliding process of the lifting tank 25, the liquid, under the action of the backflush hole 26 and the filter hole 22, continuously impacts the tea leaves, achieving the purpose of stirring the tea leaves, thereby allowing for better extraction. After extraction, the lifting tank 25 can be pulled by the second driving component 5 to collect the tea leaves. The tea leaves expand during soaking, and under the action of the lifting tank 25, the tea leaves can be squeezed to achieve the purpose of drying them. After completing the high-temperature extraction, the storage tank is placed in the low-temperature extraction tank 16, where fresh water is used for a final soaking, further improving the extraction utilization rate of the tea beverage and enhancing the extraction effect.

[0040] Example 2 Reference Figure 4 The difference between this embodiment and Embodiment 1 is that the inner mesh tank 21 includes an inner mesh ring 46 and a control filter plate 40. The inner mesh ring 46 is circular, and the control filter plate 40 has a bottom filter hole 37 at its bottom. The control filter plate 40 is slidably connected to the stirring chamber 20. A compression spring 36 is installed on the control filter plate 40, and the side of the compression spring 36 away from the control filter plate 40 abuts against the bottom of the lifting tank 25. A limit stop ring 41 is fixed to the inner wall of the inner mesh ring 46, and the limit stop ring 41 is used to limit the sliding distance of the control filter plate 40.

[0041] The inner wall of the inner mesh ring 46 is provided with a threaded hole 42, which is located near the bottom. Multiple mounting seats 39 are fixed in a circular array at the bottom of the extraction chamber 18. The mounting seats 39 are right-angled trapezoids. The outer wall of the mounting seat 39 is provided with a threaded section 43, which is threadedly connected to the threaded hole 42. The inner mesh ring 46 is threadedly connected to the mounting seat 39. The thickness of the mounting seat 39 gradually decreases along the direction close to the inner mesh barrel 21. A guide arc surface 38 is formed on one side of the mounting seat 39. The guide arc surface 38 is used to guide the liquid. The depth direction of the bottom filter hole 37 is consistent with the inclination direction of the filter hole 22.

[0042] The advantages of Example 2 are as follows: Firstly, when the lifting tank 25 descends, the control filter plate 40 abuts against the limiting baffle, and the pressure in the stirring chamber 20 pushes the liquid into the lifting tank 25 through the backflush hole 26, thereby allowing the liquid to fully rinse the tea leaves and ensuring that the squeezed liquid can be more easily dispersed. Secondly, when the lifting tank 25 rises, initially, it can be assisted to rise under the action of the compression spring 36. When the pressure in the stirring chamber 20 is too high, the control filter plate 40 can be pulled to rise simultaneously. After squeezing for a period of time, the control filter plate 40 automatically resets under the action of the compression spring 36, reducing the resistance when the lifting tank 25 rises and improving the convenience of squeezing tea leaves.

[0043] By using the mounting base 39 in conjunction with the bottom hole, the discharged liquid can rotate within the extraction chamber 19, thereby allowing the liquid to be more smoothly drawn into the stirring chamber 20 to rinse the tea leaves.

[0044] The specific steps in the production process of tea beverages are as follows; S1: Place tea leaves, inject tea leaves into the lifting cavity through the observation cover 23 and close the observation cover 23, and use the locking pin to fix the observation cover 23.

[0045] S2: Low-temperature steeping. The tea leaves are placed in the low-temperature extraction tank 16 for extraction, which takes 15-30 minutes. The second drive unit 5 controls the lifting tank 25 to rise and fall periodically within the stirring chamber 20, ensuring thorough mixing and steeping of the tea leaves in the low-temperature extraction tank 16.

[0046] S3: Liquid transfer. The liquid in the low-temperature extraction tank 16 is heated by the heating device 11 and then injected into the high-temperature extraction tank 4, so that the temperature in the high-temperature extraction tank 4 reaches 68-80 degrees Celsius.

[0047] S4: High-temperature extraction. The tea leaves are placed in the high-temperature extraction tank 4 for extraction. The extraction time is 1 to 3 minutes. The steeping time of the tea leaves is controlled to reduce the impact of high temperature on the taste of the tea beverage. The second drive unit 5 controls the lifting tank 25 to move up and down periodically in the stirring chamber 20.

[0048] S5: Discharge heat exchange, discharge the liquid in the high-temperature extraction tank 4, and heat the liquid in the low-temperature extraction tank 16 through the heat exchange tube 17 to increase the liquid temperature in the low-temperature extraction tank 16; keep the temperature in the low-temperature extraction tank 16 at room temperature or slightly higher than room temperature.

[0049] S6: Repeat extraction, put the storage tank back into the low-temperature extraction tank 16, and the heat of the storage tank will heat the liquid in the low-temperature extraction tank 16 again to ensure the temperature of the liquid. After soaking for a certain period of time, the second drive unit 5 controls the lifting tank 25 to periodically lift and lower in the stirring chamber 20.

[0050] S7: Organize and retrieve materials, remove the storage container, and take out the tea leaves from the storage container.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An extraction apparatus for tea beverage production, characterized in that: Includes a slide rail (8), a heating device (11), and a high-temperature extraction tank (4) and several low-temperature extraction tanks (16) disposed at the bottom of the slide rail (8). A lifting seat (7) is slidably connected on the slide rail (8). A first driving member (6) for driving the lifting seat (7) to slide is disposed on the slide rail (8). A storage tank is lifted and lowered on the lifting seat (7). A second driving member (5) is disposed on the lifting seat (7). A second driving rod (1) for controlling the lifting and lowering of the storage tank is disposed on the second driving member (5). Both the high-temperature extraction tank (4) and the low-temperature extraction tank (16) have an extraction chamber (18) inside. An inner mesh barrel (21) is provided inside the extraction chamber (18). A stirring chamber (20) for placing a storage tank is provided inside the inner mesh barrel (21). Multiple filter holes (22) are provided around the inner mesh barrel (21). An extraction chamber (19) is formed between the inner mesh barrel (21) and the extraction chamber (18). A low-temperature pipe (15) is connected between the heating device (11) and the low-temperature extraction tank (16). A high-temperature pipe (9) is connected between the heating device (11) and the high-temperature extraction tank (4). A liquid pump (10) is provided on the high-temperature pipe (9). The storage tank includes a sealing plate (2) for sealing the extraction chamber (18), an observation sealing plate (23) is hinged to the sealing plate (2), and a lifting tank (25) is lifted and lowered at the bottom of the sealing plate (2). The lifting tank (25) is used to store tea leaves. The side wall of the lifting tank (25) abuts against the inner wall of the stirring chamber (20). The second drive rod (1) passes through the sealing plate (2) and is connected to the lifting tank (25). When the sealing plate (2) closes the extraction chamber (18), the second drive rod (1) drives the lifting tank (25) to rise and fall within the stirring chamber (20). The bottom of the lifting tank (25) is provided with multiple backflush holes (26).

2. The extraction apparatus for tea beverage production according to claim 1, characterized in that: The closed plate (2) has a rotating annular cavity (27). The lifting tank (25) is inserted into the rotating annular cavity (27). Several switch plates (28) are rotatably connected to the end of the rotating annular cavity (27). The lifting tank (25) pushes the switch plates (28) into the rotating annular cavity (27). When the closed plate (2) abuts against the inner mesh barrel (21), the inner mesh barrel (21) pushes the switch plates (28) to rotate and pushes the closed plate (2) and the lifting tank (25) away from each other. 28) A locking plate (31) is provided on the side away from the closed plate (2). Locking blocks (33) are provided on both sides of the locking plate (31). The side wall of the stirring chamber (20) is provided with an inner locking ring groove (34) that engages with the locking blocks (33). The outer wall of the lifting tank (25) is provided with an outer locking ring groove (32) that engages with the locking blocks (33). When the locking plate (31) rotates, the two locking blocks (33) engage with the inner locking ring groove (34) and the outer locking ring groove (32) respectively.

3. The extraction apparatus for tea beverage production according to claim 2, characterized in that: The high-temperature extraction tank (4) is provided with a guide ring (3) that is inserted into the sealing plate (2) around its periphery. The inner diameter of the guide ring (3) gradually increases in the direction away from the high-temperature extraction tank (4). The side wall of the guide ring (3) is provided with a high-temperature sealing ring (44). The side wall of the lifting tank (25) is provided with a sealing retaining ring (29). The thickness of the sealing retaining ring (29) first increases and then decreases in the vertical direction. The upper and lower side walls of the sealing retaining ring (29) are formed with pressing inclined surfaces (30). The pressing inclined surfaces (30) abut against the locking block (33). The bottom of the inner locking ring groove (34) is provided with a tensioning plane (35). The tensioning plane (35) is horizontally opened. The sealing retaining ring (29) pushes the locking block (33) towards the tensioning plane (35).

4. The extraction apparatus for tea beverage production according to claim 3, characterized in that: The filter hole (22) is inclined inward along the tangent of the inner mesh barrel (21) in the depth direction, and the backflush hole (26) is inclined towards the lifting tank (25) along the inclined direction of the filter hole (22) in the depth direction.

5. The extraction apparatus for tea beverage production according to claim 4, characterized in that: The lifting tank (25) is equipped with a stirring fan (24), which is rotatably connected to the bottom of the sealing plate (2).

6. The extraction apparatus for tea beverage production according to claim 1, characterized in that: The high-temperature extraction tank (4) is provided with a drain pipe (13) at the bottom, and a drain switch (12) is provided on the drain pipe (13). The low-temperature extraction tank (16) is surrounded by a heat exchange tube (17), and the drain pipe (13) is connected to the heat exchange tube (17).

7. The extraction apparatus for tea beverage production according to claim 6, characterized in that: The high-temperature extraction tank (4) is provided with a gas injection pipe (45) on its side wall. The gas injection pipe (45) is used to inject high-pressure gas into the extraction chamber (18). A filter seat (14) is provided on the drain pipe (13). A filter chamber is opened in the filter seat (14). Multiple filter plates are provided in the filter chamber.

8. The extraction apparatus for tea beverage production according to claim 4, characterized in that: The inner mesh tank (21) includes an inner mesh ring (46) and a control filter plate (40). The control filter plate (40) has a bottom filter hole (37) at its bottom. The control filter plate (40) is slidably connected to the stirring chamber (20). A compression spring (36) is provided on the control filter plate (40). The side of the compression spring (36) away from the control filter plate (40) abuts against the bottom of the lifting tank (25). A limit stop ring (41) is provided on the inner wall of the inner mesh ring (46). The limit stop ring (41) is used to limit the sliding distance of the control filter plate (40).

9. The extraction apparatus for tea beverage production according to claim 2, characterized in that: The inner wall of the inner mesh ring (46) is provided with a threaded hole (42), which is located near the bottom. The bottom of the extraction chamber (18) is provided with a plurality of mounting seats (39) arranged in a circular array. The outer wall of the mounting seat (39) is provided with a threaded section (43), which is threadedly connected to the threaded hole (42). The inner mesh ring (46) is threadedly connected to the mounting seat (39). The thickness of the mounting seat (39) gradually decreases along the direction close to the inner mesh barrel (21). A guide arc surface (38) is provided on one side of the mounting seat (39). The depth direction of the bottom filter hole (37) is consistent with the inclination direction of the filter hole (22). The flow direction of the liquid flushed out of the bottom filter hole (37) after passing through the guide arc surface (38) is consistent with the inclination direction of the filter hole (22).

10. A tea beverage production process, employing the extraction apparatus for tea beverage production as described in any one of claims 1-9, characterized in that, The specific steps are as follows; S1: Place tea leaves, inject tea leaves into the lifting chamber through the observation sealing plate (23), and close the observation sealing plate (23); S2: Low-temperature soaking, the tea leaves are placed in the low-temperature extraction tank (16) for extraction, the extraction time is 15 to 30 minutes, and the second drive unit (5) controls the lifting tank (25) to periodically rise and fall in the stirring chamber (20); S3: Liquid transfer, the liquid in the low temperature extraction tank (16) is heated by the heating device (11) and then injected into the high temperature extraction tank (4) so ​​that the temperature in the high temperature extraction tank (4) reaches 68 to 80 degrees Celsius; S4: High-temperature extraction, tea leaves are placed in a high-temperature extraction tank (4) for extraction, the extraction time is 1 to 3 minutes, and the second drive unit (5) controls the lifting tank (25) to periodically rise and fall in the stirring chamber (20); S5: Discharge heat exchange, discharge the liquid in the high temperature extraction tank (4), and heat the liquid in the low temperature extraction tank (16) through the heat exchange tube (17) to increase the liquid temperature in the low temperature extraction tank (16); S6: Repeat the extraction, put the storage tank back into the low temperature extraction tank (16), soak for a certain period of time, and the second drive unit (5) controls the lifting tank (25) to periodically lift and lower in the stirring chamber (20); S7: Organize and retrieve materials, remove the storage container, and take out the tea leaves from the storage container.

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