A cleaning device for tea leaves after extraction

Abstract

The utility model relates to the technical field of tea processing discloses a kind of cleaning device after tea extraction, including CIP cleaning pipe, acidic solution tank, alkaline solution tank, hot water tank and backwater tank are communicated with CIP cleaning pipe, can according to demand to CIP cleaning pipe inside conveying acidic solution, alkaline solution, hot water and pure water, then through CIP cleaning pipe is transported to the tank body to be cleaned inside. Can avoid operator and the direct contact of acidic solution and alkaline solution, to guarantee the security of operation process. In addition, after completing cleaning, acidic solution, alkaline solution, hot water and pure water can be returned to acidic solution tank, alkaline solution tank, hot water tank and backwater tank by CIP return pipe, to be able to realize the multiple circulation use of acidic solution, alkaline solution, hot water and pure water, to significantly improve the utilization of chemical reagent and water resource.

Description

Technical Field

[0001] This utility model relates to the technical field of tea processing, specifically to a cleaning device for tea after extraction. Background Technology

[0002] The cleaning procedure for the tank used to extract concentrated tea extract is as follows: 1. Pre-rinsing stage: Warm water is injected into the tank through the liquid inlet at the top of the tank to rinse the inner wall of the tank, remove residual tea concentrate and visible impurities, and the wastewater after rinsing is discharged from the bottom drain. 2. Alkaline Soaking Stage: Dilute the alkaline solution according to the standard, heat the diluted alkaline solution, and inject it into the tank through the inlet. Let it stand and soak for 15-20 minutes to allow the alkaline solution to fully decompose organic residues. After soaking, drain the waste liquid from the drain outlet at the bottom of the tank.

[0003] 3. Acidic Soaking Stage: Dilute the acidic solution according to the standard, heat the diluted acidic solution, and inject it into the tank through the inlet. Let it stand and soak for 15-20 minutes to allow the acidic solution to effectively neutralize the alkaline solution residue and remove scale. After soaking, the waste liquid is also discharged from the bottom drain. 4. Final rinsing stage: Inject warm water into the tank through the inlet at the top of the extraction tank to rinse the inner wall of the tank, ensuring that no acidic solution remains. The rinsed water is discharged from the drain at the bottom of the extraction tank.

[0004] However, during the aforementioned cleaning process, operators need to come into contact with acidic and alkaline solutions. These solutions are corrosive, increasing health risks for operators not only during preparation and cleaning but also, even with protective measures, prolonged exposure to environments containing acidic or alkaline solutions can still pose potential health hazards. Furthermore, the manual cleaning methods described above are cumbersome, leading to increased cleaning time and higher labor costs. Utility Model Content

[0005] This utility model aims to provide a cleaning device for tea leaves after extraction, which not only avoids direct contact between operators and acidic and alkaline solutions, thus ensuring the safety of the operation process, but also enables multiple recycling of acidic solutions, alkaline solutions, hot water and purified water, thereby significantly improving the utilization rate of chemical reagents and water resources.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: 1) A tea leaf extraction cleaning device, comprising an acidic conveying structure, an alkaline conveying structure, a hot water conveying structure, and a return water conveying structure. The acidic conveying structure has an acidic reflux port, an acidic output port, and an acidic waste liquid port. The alkaline conveying structure has an alkaline reflux port, an alkaline output port, and an alkaline waste liquid port. The hot water conveying structure has a hot water reflux port, a hot water output port, and a hot water waste liquid port. The return water conveying structure has a return water reflux port, a return water output port, and a return water waste liquid port. The acidic output port, alkaline output port, hot water output port, and return water output port share a common... The system is connected to a CIP cleaning pipe for conveying acidic solutions, alkaline solutions, hot water, and purified water. The acidic reflux port, alkaline reflux port, hot water reflux port, and return water reflux port are all connected to a CIP reflux pipe for conveying acidic solution reflux liquid, alkaline solution reflux liquid, hot water reflux liquid, and purified water reflux liquid. The end of the CIP reflux pipe is connected to a main waste liquid pipe for discharging non-reusable acidic solutions, alkaline solutions, hot water, and purified water. The acidic waste liquid port, alkaline waste liquid port, hot water waste liquid port, and return water waste liquid port are respectively connected to the main waste liquid pipe.

[0007] In this invention, the acidic conveying structure stores an acidic solution prepared according to the required ratio, and the acidic output port is connected to the CIP cleaning pipe. When the tank for extracting tea concentrate needs to be cleaned with the acidic solution, the acidic solution is delivered to the tank through the CIP cleaning pipe to provide the tank with the necessary acidic solution for cleaning. The alkaline conveying structure stores an alkaline solution prepared according to the required ratio, and the alkaline output port is connected to the CIP cleaning pipe. When the tank for extracting tea concentrate needs to be cleaned with the alkaline solution, the alkaline solution is delivered to the tank through the CIP cleaning pipe to provide the tank with the necessary alkaline solution for cleaning.

[0008] Secondly, the hot water delivery structure stores hot water, and the hot water outlet is connected to the CIP cleaning pipe. When the tank for extracting tea concentrate needs to be cleaned with hot water, the hot water is delivered to the tank through the CIP cleaning pipe to provide the necessary hot water for cleaning. The return water delivery structure stores purified water, and the return water outlet is connected to the CIP cleaning pipe. When the tank for extracting tea concentrate needs to be cleaned with purified water, the purified water is delivered to the tank through the CIP cleaning pipe to provide the necessary purified water for cleaning.

[0009] With the above setup, acidic and alkaline solutions can be directly delivered into the tank via CIP cleaning tubing as needed, thus avoiding direct contact between operators and the solutions and effectively reducing the safety risks associated with contact with chemical reagents. Furthermore, the delivery of acidic, alkaline, hot, and purified water can be switched according to the cleaning requirements of different tanks, improving cleaning efficiency, ensuring operational safety, and reducing labor costs.

[0010] The acid reflux port is connected to the CIP reflux pipe, allowing used acidic solution to be re-transported into the acidic conveying structure via the CIP reflux pipe. Operators can then re-transport the recovered acidic solution back into the tank to be cleaned via the CIP cleaning pipe, based on actual cleaning needs, thus enabling the reuse of the acidic solution. Similarly, the alkaline reflux port is connected to the CIP reflux pipe, allowing used alkaline solution to be re-transported into the alkaline conveying structure via the CIP reflux pipe. Operators can then re-transport the recovered alkaline solution back into the tank to be cleaned via the CIP cleaning pipe, based on actual cleaning needs, thus enabling the reuse of the alkaline solution.

[0011] Secondly, the hot water return port is connected to the CIP return pipe, allowing used hot water to be returned to the hot water delivery structure via the CIP return pipe. Operators can then re-transport the recovered hot water to the tank to be cleaned through the CIP cleaning pipe, based on actual cleaning needs, thus achieving hot water reuse. Similarly, the return water return port is connected to the CIP return pipe, allowing used purified water to be returned to the return water delivery structure via the CIP return pipe. Operators can then re-transport the recovered purified water to the tank to be cleaned through the CIP cleaning pipe, based on actual cleaning needs, thus achieving purified water reuse. This setup enables the recycling of acidic solutions, alkaline solutions, hot water, and purified water, effectively improving the utilization rate of the cleaning solution.

[0012] The acidic waste liquid outlet of the acidic conveying structure is connected to the main waste liquid pipeline. After the used acidic solution returns to the acidic conveying structure through the CIP return pipe, if it is confirmed that it cannot be reused, it can be conveyed to the main waste liquid pipeline through the acidic discharge outlet, and then uniformly conveyed to the subsequent treatment stage through the main waste liquid pipeline. The alkaline waste liquid outlet of the alkaline conveying structure is connected to the main waste liquid pipeline. After the used alkaline solution returns to the alkaline conveying structure through the CIP return pipe, if it is confirmed that it cannot be reused, it can be conveyed to the main waste liquid pipeline through the alkaline discharge outlet, and then uniformly conveyed to the subsequent treatment stage through the main waste liquid pipeline.

[0013] Secondly, the hot water waste outlet of the hot water conveying structure is connected to the main waste liquid pipeline. When the used hot water returns to the hot water conveying structure through the CIP return pipe, if it is confirmed that it cannot be reused, it can be conveyed to the main waste liquid pipeline through the hot water drain outlet, and then uniformly conveyed to the subsequent treatment stage through the main waste liquid pipeline. Similarly, the return water waste outlet of the return water conveying structure is connected to the main waste liquid pipeline. When the used purified water returns to the return water conveying structure through the CIP return pipe, if it is confirmed that it cannot be reused, it can be conveyed to the main waste liquid pipeline through the return water drain outlet, and then uniformly conveyed to the subsequent treatment stage through the main waste liquid pipeline.

[0014] Meanwhile, the CIP return pipe is directly connected to the main waste liquid pipeline. Non-reusable acidic solutions, alkaline solutions, hot water, and purified water can all be directly transported to the main waste liquid pipeline through the CIP return pipe, and then uniformly transported to subsequent treatment stages. This setup provides an alternative discharge route for treating the aforementioned non-reusable liquids, effectively avoiding the risk of system downtime due to a malfunction in one discharge route. Furthermore, this centralized discharge setup achieves unified collection and treatment of waste liquid, avoiding the cumbersome process of separate discharge through multiple pipelines and improving the overall efficiency of waste liquid treatment.

[0015] 2) A tea-extraction cleaning device according to 1), wherein: The acid delivery structure includes an acid solution tank with a heating function. An acid output port is located on the side wall of the acid solution tank and is connected to a CIP cleaning pipe via an acid output pipe. A first output valve is provided on the acid output pipe. An acid reflux port is located at the top of the acid solution tank and is connected to a CIP reflux pipe via an acid reflux pipe. A first reflux valve is provided on the acid reflux pipe. An acid waste liquid port is located at the bottom of the acid solution tank and is connected to a main waste liquid pipe via an acid waste liquid pipe. A first waste liquid valve is provided on the acid waste liquid pipe. A first water pipe and a concentrated acid input pipe for conveying concentrated acid are connected to the top of the acid solution tank. A first water supply valve is provided on the first water pipe. A main water pipe for conveying pure water is connected to the first water pipe. A concentrated acid diaphragm pump is provided on the concentrated acid input pipe. The end of the concentrated acid input pipe away from the acid solution tank is connected to the main water pipe via a concentrated acid connection pipe. A concentrated acid connection valve is provided on the concentrated acid connection pipe.

[0016] In this invention, a concentrated acid input pipe delivers concentrated acid solution to an acidic solution tank. A concentrated acid diaphragm pump is installed on the input pipe, controlling the start and stop of the concentrated acid solution delivery, thereby precisely controlling the input volume of concentrated acid solution in the acidic solution tank. The concentrated acid diaphragm pump is a DBY type electric diaphragm pump. Simultaneously, a main water pipe delivers purified water to the acidic solution tank through a first water pipe equipped with a first water valve. By opening or closing the first water valve, the delivery volume of purified water can be precisely controlled, allowing the concentrated acid solution to be mixed with purified water according to a preset ratio, thus diluting the concentrated acid solution to a standard concentration. Furthermore, an electric heating element (Hastelloy C276) is installed inside the acidic solution tank to heat the acidic solution. This setup not only avoids the tedious manual preparation of solutions and eliminates the potential safety risks to operators handling concentrated acid solutions, but also ensures the accuracy and consistency of the prepared acidic solution, significantly improving operational safety and work efficiency.

[0017] When the first output valve opens, the prepared acidic solution in the acidic solution tank flows into the CIP cleaning pipe through the acidic output pipe and is then transported to the tank requiring cleaning via the CIP cleaning pipe. Next, when the first return valve opens, the used acidic solution is transported to the acidic return pipe through the CIP return pipe and then returns to the acidic solution tank. If the acidic solution needs to be reused, the first output valve can be opened again to allow it to re-enter the CIP cleaning pipe; if the acidic solution cannot be reused, the first waste liquid valve is opened, allowing it to flow into the main waste liquid pipeline through the acidic waste liquid pipe and ultimately be transported to the subsequent treatment stage via the main waste liquid pipeline.

[0018] Open the concentrated acid connection valve, and the purified water in the main water pipe enters the concentrated acid input pipe through the concentrated acid connection pipe to clean the inner walls of the concentrated acid input pipe and the concentrated acid connection pipe. The cleaned purified water flows into the acidic solution tank, flows into the main waste liquid pipeline through the acidic waste liquid outlet, and is finally transported to the subsequent treatment stage through the main waste liquid pipeline.

[0019] 3) A tea-extraction cleaning device according to 1), wherein: The alkaline delivery structure includes an alkaline solution tank with a heating function. An alkaline output port is located on the side wall of the alkaline solution tank and is connected to a CIP cleaning pipe via an alkaline output pipe. A second output valve is provided on the alkaline output pipe. An alkaline reflux port is located at the top of the alkaline solution tank and is connected to a CIP reflux pipe via an alkaline reflux pipe. A second reflux valve is provided on the alkaline reflux pipe. An alkaline waste liquid port is located at the bottom of the alkaline solution tank and is connected to a main waste liquid pipe via an alkaline waste liquid pipe. A second waste liquid valve is provided on the alkaline waste liquid pipe. A second water pipe and a concentrated alkali input pipe for conveying concentrated alkali are connected to the top of the alkaline solution tank. A second water supply valve is provided on the second water pipe. The second water pipe is connected to a main water pipe for conveying pure water. A concentrated alkali diaphragm pump is provided on the concentrated alkali input pipe. The end of the concentrated alkali input pipe away from the alkaline solution tank is connected to the main water pipe via a concentrated alkali connecting pipe. A concentrated alkali connecting pipe is provided with a concentrated alkali connecting valve.

[0020] In this invention, a concentrated alkali input pipe delivers concentrated alkali solution to an alkaline solution tank. A concentrated alkali diaphragm pump is installed on the input pipe, which controls the start and stop of the concentrated alkali solution delivery, thereby precisely controlling the input volume of concentrated alkali solution in the tank. The concentrated alkali diaphragm pump is a DBY type electric diaphragm pump. Simultaneously, a main water pipe delivers purified water to the alkaline solution tank via a second water pipe equipped with a second water valve. By opening or closing the second water valve, the delivery volume of purified water can be precisely controlled, allowing the concentrated alkali solution to be mixed with purified water according to a preset ratio, thus diluting the concentrated alkali solution to a standard concentration. Furthermore, an Incoloy 800 electric heating element is installed inside the alkaline solution tank to heat the alkaline solution. This setup not only avoids the tedious manual preparation of alkaline solutions and eliminates potential safety risks to operators handling concentrated alkali solutions, but also ensures the accuracy and consistency of the prepared concentrated alkali solution, significantly improving operational safety and work efficiency.

[0021] When the second output valve is opened, the prepared alkaline solution in the alkaline solution pipe flows into the CIP cleaning pipe through the alkaline output pipe and is then transported to the tank requiring cleaning via the CIP cleaning pipe. Next, when the second return valve is opened, the used alkaline solution is transported to the alkaline return pipe through the CIP return pipe and then returns to the alkaline solution tank. If the alkaline solution needs to be reused, the second output valve can be opened again to allow it to re-enter the CIP cleaning pipe; if the alkaline solution cannot be reused, the second waste liquid valve is opened to allow it to flow into the main waste liquid pipeline through the alkaline waste liquid pipe and ultimately be transported to the subsequent treatment stage via the main waste liquid pipeline.

[0022] When the concentrated alkali connection valve is opened, purified water in the main water pipe flows through the concentrated alkali connection pipe into the concentrated alkali input pipe, flushing the inner walls of both pipes. The wastewater generated during flushing flows directly into the alkaline solution tank, and then is discharged into the main waste liquid pipeline through the alkaline waste liquid outlet, ultimately being transported by the main waste liquid pipeline to subsequent treatment stages.

[0023] 4) A tea-extraction cleaning device according to 1), wherein: The hot water delivery structure includes a hot water tank with a heating function. The hot water outlet is located on the side wall of the hot water tank and is connected to a CIP cleaning pipe via a hot water outlet pipe. A third outlet valve is provided on the hot water outlet pipe. The hot water return outlet is located at the top of the hot water tank and is connected to a CIP return pipe via a hot water return pipe. A third return valve is provided on the hot water return pipe. The hot water waste outlet is located at the bottom of the hot water tank and is connected to a main waste liquid pipe via a hot water waste liquid pipe. A third waste liquid valve is provided on the hot water waste liquid pipe. A third water pipe is connected to the top of the hot water tank and is equipped with a third water supply valve. The third water pipe is connected to a main water pipe that can supply purified water to the third water pipe.

[0024] In this invention, the main water pipe delivers purified water to the hot water tank via a third water pipe. The third water pipe is equipped with a third water supply valve, which allows for precise control of the purified water delivery rate by opening or closing the valve. Furthermore, the hot water tank is equipped with an Incoloy 800 electric heating element, which heats the purified water inside using electrical heating.

[0025] When the third output valve is opened, hot water from the hot water tank flows into the CIP cleaning pipe through the hot water output pipe and is then transported to the tank requiring cleaning via the CIP cleaning pipe. Secondly, when the first return valve is opened, used hot water is transported to the hot water return pipe through the CIP return pipe and then returns to the hot water tank. If the hot water needs to be reused, the third output valve can be opened again to allow it to re-enter the CIP cleaning pipe; if the hot water cannot be reused, the third waste liquid valve is opened to allow it to flow into the main waste liquid pipe through the hot water waste liquid pipe and ultimately be transported to the subsequent treatment stage via the main waste liquid pipe.

[0026] 5) A tea-extraction cleaning device according to 1), wherein: The return water conveying structure includes a return water tank, a return water outlet located on the side wall of the return water tank, the return water outlet connected to the CIP cleaning pipe via a return water outlet pipe, a fourth outlet valve on the return water outlet pipe, a return water reflux port located at the top of the return water tank, the return water reflux port connected to the CIP reflux pipe via a return water reflux pipe, a fourth reflux valve on the return water reflux pipe, a return water waste liquid outlet located at the bottom of the return water tank, the return water waste liquid outlet connected to the main waste liquid pipe via a return water waste liquid pipe, a fourth waste liquid valve on the return water waste liquid pipe, a fourth water pipe connected to the top of the return water tank, a fourth water supply valve on the fourth water pipe, and the fourth water pipe connected to the main water pipe into which pure water can be supplied.

[0027] In this invention, the main water pipe delivers purified water to the return water tank via a fourth water pipe. The fourth water pipe is equipped with a fourth water supply valve, which allows for precise control of the purified water delivery rate. When the fourth output valve is open, purified water in the return water tank flows into the CIP cleaning pipe through the return water output pipe and is then transported to the tank requiring cleaning via the CIP cleaning pipe. Secondly, when the fourth return valve is open, used purified water is transported to the return water return pipe through the CIP return pipe and then returns to the return water tank. If the purified water needs to be reused, the fourth output valve can be opened again to allow it to re-enter the CIP cleaning pipe; if the purified water cannot be reused, the fourth waste liquid valve is opened, allowing it to flow into the main waste liquid pipeline through the waste liquid return pipe and ultimately be transported to the subsequent treatment stage via the main waste liquid pipeline.

[0028] 6) A tea-extraction cleaning device according to 1), wherein: The acidic solution conveying structure is provided with an acidic exhaust port at the top, the alkaline solution conveying structure is provided with an alkaline exhaust port at the top, and the hot water conveying structure is provided with a hot water exhaust port at the top. The acidic exhaust port, the alkaline exhaust port, and the hot water exhaust port are all connected to a main exhaust pipe for discharging the gas inside the acidic solution conveying structure, the alkaline solution conveying structure, and the hot water conveying structure.

[0029] In this invention, when the acidic solution in the acidic solution tank is heated, the generated gas is discharged into the main exhaust pipe through the acidic exhaust port; similarly, when the alkaline solution in the alkaline solution tank is heated, the generated gas is discharged into the main exhaust pipe through the alkaline exhaust port; and when the purified water in the hot water tank is heated, the generated gas is discharged into the main exhaust pipe through the hot water exhaust port. All gases are ultimately transported to the subsequent processing unit through the main exhaust pipe, achieving unified collection and centralized processing of the gases.

[0030] 7) A tea-extraction cleaning device according to 5), wherein: The CIP cleaning pipe is provided with a cleaning valve and a connecting pipe in sequence at the end near the liquid flow direction. The end of the connecting pipe is connected to the CIP return pipe. The connecting pipe is provided with a connecting valve and a first check valve in sequence. The CIP return pipe is provided with a second check valve. The second check valve is located between the end away from the main waste liquid pipe and the connecting pipe. The end of the CIP cleaning pipe away from the cleaning valve is connected to the main water pipe through a connecting water pipe. The connecting water pipe is provided with a connecting valve.

[0031] In this invention, when the connecting valve is opened, the main water pipe delivers purified water to the CIP cleaning pipe through the connecting water pipe to clean the inner wall of the CIP cleaning pipe. After the cleaning valve is closed and the connecting valve is opened, this purified water flows into the CIP return pipe through the connecting pipe, thereby continuing to clean the inner wall of the CIP return pipe. During this process, the second check valve effectively prevents purified water from flowing back into the extraction tank through the CIP return pipe, while the first check valve prevents liquid in the CIP return pipe from flowing back into the CIP cleaning pipe through the connecting pipe, thus ensuring that the inner walls of the CIP cleaning pipe and the CIP return pipe are effectively cleaned.

[0032] 8) A tea-extraction cleaning device according to 7), wherein: The CIP cleaning tube is equipped with a tubular heat exchanger and a centrifugal pump in sequence near the end along the direction of liquid flow. Both the tubular heat exchanger and the centrifugal pump are located between the connecting pipe and the connecting water pipe. The tubular heat exchanger is connected to a steam delivery pipe for supplying steam into it, and the steam delivery pipe is equipped with a steam valve.

[0033] In this invention, when the steam valve is opened, steam enters the tubular heat exchanger through the delivery pipe. The tubular heat exchanger utilizes the thermal energy of the steam to heat the acidic solution, alkaline solution, hot water, and purified water flowing through it, bringing them to and maintaining the required temperature. This heating process ensures that all liquids have sufficient heat when delivered to the tank to be cleaned, thus avoiding insufficient temperature affecting the final cleaning effect. A centrifugal pump provides power for delivering the acidic solution, alkaline solution, hot water, and purified water to the CIP cleaning pipe, ensuring a stable and continuous input of these solutions into the tank during the cleaning process.

[0034] Secondly, the tubular heat exchanger is located between the connecting pipe and the connecting water pipe. When the connecting valve is opened, the pure water transported by the main water pipe enters the CIP cleaning pipe through the connecting water pipe and flows through the internal piping of the tubular heat exchanger. This arrangement not only cleans the inner wall of the CIP cleaning pipe but also effectively cleans the internal piping of the tubular heat exchanger.

[0035] Compared with the prior art, this utility model also has the following technical effects: In this invention, the acid solution tank, alkaline solution tank, hot water tank, and return water tank are each connected to a CIP cleaning pipe. Acidic solution, alkaline solution, hot water, and purified water can be supplied to the CIP cleaning pipe as needed, and then transported to the tank to be cleaned through the CIP cleaning pipe. Compared to existing technologies, this invention avoids direct contact between operators and acidic and alkaline solutions, thus ensuring the safety of the operation process. Furthermore, after cleaning, the acidic solution, alkaline solution, hot water, and purified water can be returned to the acid solution tank, alkaline solution tank, hot water tank, and return water tank through the CIP return pipe, enabling multiple recycling of the acidic solution, alkaline solution, hot water, and purified water, thereby significantly improving the utilization rate of chemical reagents and water resources. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of a tea-extracting cleaning device according to the present invention. Detailed Implementation

[0037] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: CIP cleaning pipe 1, CIP return pipe 2, main waste liquid pipe 3, acidic solution tank 4, acidic output pipe 5, first output valve 6, acidic return pipe 7, first return valve 8, acidic waste liquid pipe 9, first waste liquid valve 10, first water pipe 11, concentrated acid input pipe 12, first water supply valve 13, main water pipe 14, concentrated acid diaphragm pump 15, concentrated acid connection valve 16, alkaline solution tank 17, alkaline output pipe 18, second output valve 19, alkaline return pipe 20, second return valve 21, alkaline waste liquid pipe 22, second waste liquid valve 23, second water pipe 24, concentrated alkali input pipe 25, second water supply valve 26, concentrated alkali diaphragm pump 27, concentrated alkali connection pipe 28, concentrated alkali connection... 29. Connecting valve; 30. Concentrated acid connecting pipe; 31. Hot water tank; 32. Hot water output pipe; 33. Third output valve; 34. Hot water return pipe; 35. Third return valve; 36. Hot water waste liquid pipe; 37. Third waste liquid valve; 38. Third water pipe; 39. Third water supply valve; 40. Return water tank; 41. Return water output pipe; 42. Fourth output valve; 43. Return water return pipe; 44. Fourth return valve; 45. Return water waste liquid pipe; 46. Fourth waste liquid valve; 47. Fourth water pipe; 48. Fourth water supply valve; 49. Main exhaust pipe; 50. Cleaning valve; 51. Connecting pipe; 52. Connecting valve; 53. First check valve; 54. Second check valve; 55. Connecting valve; 56. Tubular heat exchanger; 57. Centrifugal pump; 58. Steam delivery pipe; 59. Steam valve.

[0038] See the example. Figure 1As shown, this embodiment of a tea-extracting cleaning device includes an acidic conveying structure, an alkaline conveying structure, a hot water conveying structure, and a return water conveying structure. The acidic conveying structure is provided with an acidic reflux port, an acidic output port, and an acidic waste liquid port. The alkaline conveying structure is provided with an alkaline reflux port, an alkaline output port, and an alkaline waste liquid port. The hot water conveying structure is provided with a hot water reflux port, a hot water output port, and a hot water waste liquid port. The return water conveying structure is provided with a return water reflux port, a return water output port, and a return water waste liquid port. The acidic output port, alkaline output port, hot water output port, and return water output port are all connected to a CIP cleaning pipe 1 for conveying acidic solution, alkaline solution, hot water, and pure water.

[0039] Secondly, the acid reflux port, alkaline reflux port, hot water reflux port, and return water reflux port are all connected to a CIP reflux pipe 2 for conveying acid solution reflux liquid, alkaline solution reflux liquid, hot water reflux liquid, and pure water reflux liquid. The end of the CIP reflux pipe 2 is connected to a main waste liquid pipe 3 for discharging non-reusable acid solution, alkaline solution, hot water, and pure water. The acid waste liquid port, alkaline waste liquid port, hot water waste liquid port, and return water waste liquid port are respectively connected to the main waste liquid pipe 3.

[0040] In this embodiment, the acidic conveying structure stores an acidic solution prepared according to the required ratio, and the acidic output port is connected to the CIP cleaning pipe 1. When the tank for extracting tea concentrate needs to be cleaned with the acidic solution, the acidic solution is conveyed into the tank through the CIP cleaning pipe 1 to provide the tank with the acidic solution required for cleaning. The alkaline conveying structure stores an alkaline solution prepared according to the required ratio, and the alkaline output port is connected to the CIP cleaning pipe 1. When the tank for extracting tea concentrate needs to be cleaned with the alkaline solution, the alkaline solution is conveyed into the tank through the CIP cleaning pipe 1 to provide the tank with the alkaline solution required for cleaning.

[0041] Secondly, the hot water delivery structure stores hot water, and the hot water outlet is connected to the CIP cleaning pipe 1. When the tank for extracting tea concentrate needs to be cleaned with hot water, the hot water is delivered to the tank through the CIP cleaning pipe 1 to provide the tank with the hot water required for cleaning. The return water delivery structure stores purified water, and the return water outlet is connected to the CIP cleaning pipe 1. When the tank for extracting tea concentrate needs to be cleaned with purified water, the purified water is delivered to the tank through the CIP cleaning pipe 1 to provide the tank with the purified water required for cleaning.

[0042] With the above setup, acidic and alkaline solutions can be directly delivered into the tank via CIP cleaning tube 1 as needed, thus avoiding direct contact between operators and the solutions and effectively reducing the safety risks associated with contact with chemical reagents. Furthermore, the delivery of acidic solutions, alkaline solutions, hot water, and purified water can be switched according to the cleaning requirements of different tanks, improving cleaning efficiency while ensuring operational safety.

[0043] The acid reflux port is connected to CIP reflux pipe 2, allowing the used acidic solution to be re-transported into the acidic conveying structure via CIP reflux pipe 2. Operators can then re-transport the recovered acidic solution back into the tank to be cleaned via CIP cleaning pipe 1, thus enabling the reuse of the acidic solution. Similarly, the alkaline reflux port is connected to CIP reflux pipe 2, allowing the used alkaline solution to be re-transported into the alkaline conveying structure via CIP reflux pipe 2. Operators can then re-transport the recovered alkaline solution back into the tank to be cleaned via CIP cleaning pipe 1, thus enabling the reuse of the alkaline solution.

[0044] Secondly, the hot water return port is connected to the CIP return pipe 2, which allows the used hot water to be transported back to the hot water delivery structure through the CIP return pipe 2. Operators can then transport the recovered hot water back to the tank to be cleaned through the CIP cleaning pipe 1 according to the actual cleaning needs, thus enabling the reuse of hot water.

[0045] The return water inlet is connected to CIP return pipe 2, allowing used purified water to be reintroduced into the return water conveying structure via CIP return pipe 2. Operators can then, according to actual cleaning needs, reintroduce the recovered purified water into the tank to be cleaned via CIP cleaning pipe 1, thus enabling the reuse of purified water. This setup allows for the recycling of acidic solutions, alkaline solutions, hot water, and purified water, effectively improving the utilization rate of cleaning solutions.

[0046] The acid waste liquid outlet of the acid conveying structure is connected to the main waste liquid pipeline 3. When the used acid solution returns to the acid conveying structure through the CIP return pipe 2, if it is confirmed that it cannot be reused, it can be conveyed to the main waste liquid pipeline 3 through the acid discharge outlet, and then uniformly conveyed to the subsequent treatment stage through the main waste liquid pipeline 3.

[0047] The alkaline waste liquid outlet of the alkaline conveying structure is connected to the main waste liquid pipeline 3. When the alkaline solution is returned to the alkaline conveying structure through the CIP return pipe 2, if it is confirmed that it cannot be reused, it can be conveyed to the main waste liquid pipeline 3 through the alkaline discharge outlet, and then conveyed to the subsequent treatment stage through the main waste liquid pipeline 3.

[0048] Secondly, the hot water waste outlet of the hot water conveying structure is connected to the main waste liquid pipe 3. When the used hot water returns to the hot water conveying structure through the CIP return pipe 2, if it is confirmed that it cannot be reused, it can be conveyed to the main waste liquid pipe 3 through the hot water drain outlet, and then conveyed to the subsequent treatment stage through the main waste liquid pipe 3.

[0049] The wastewater inlet of the return water conveying structure is connected to the main wastewater pipeline 3. When the used purified water returns to the return water conveying structure through the CIP return pipe 2, if it is confirmed that it cannot be reused, it can be conveyed to the main wastewater pipeline 3 through the return water outlet, and then conveyed to the subsequent treatment stage through the main wastewater pipeline 3.

[0050] Meanwhile, the end of the CIP return pipe 2 is directly connected to the main waste liquid pipe 3. Acidic solutions, alkaline solutions, hot water and pure water that cannot be reused can be directly transported to the main waste liquid pipe 3 through the CIP return pipe 2, and then transported to the subsequent treatment stage through the main waste liquid pipe 3.

[0051] This setup provides an alternative discharge route for the aforementioned non-reusable liquids, effectively avoiding the risk of system downtime due to a malfunction in one discharge route. Furthermore, this centralized discharge setup enables unified collection and treatment of waste liquids, avoiding the cumbersome process of multiple separate pipelines and improving the overall efficiency of waste liquid treatment.

[0052] The acid delivery structure includes an acid solution tank 4 with a heating function, an acid output port located on the side wall of the acid solution tank 4, an acid output port connected to the CIP cleaning pipe 1 through an acid output pipe 5, a first output valve 6 on the acid output pipe 5, an acid reflux port located at the top of the acid solution tank 4, an acid reflux port connected to the CIP reflux pipe 2 through an acid reflux pipe 7, and a first reflux valve 8 on the acid reflux pipe 7.

[0053] Secondly, the acidic waste liquid outlet is located at the bottom of the acidic solution tank 4. The acidic waste liquid outlet is connected to the main waste liquid pipe 3 through the acidic waste liquid pipe 9. The acidic waste liquid pipe 9 is equipped with a first waste liquid valve 10. The top of the acidic solution tank 4 is connected to a first water pipe 11 and a concentrated acid input pipe 12 for conveying concentrated acid into it. The first water pipe 11 is equipped with a first water supply valve 13. The first water pipe 11 is connected to a main water pipe 14 for conveying pure water into the first water pipe 11. The concentrated acid input pipe 12 is equipped with a concentrated acid diaphragm pump 15. The end of the concentrated acid input pipe 12 away from the acidic solution tank 4 is connected to the main water pipe 14 through a concentrated acid connecting pipe 30. The concentrated acid connecting pipe 30 is equipped with a concentrated acid connecting valve 16.

[0054] In this embodiment, the concentrated acid input pipe 12 can transport the concentrated acid solution to the acidic solution tank 4, and a concentrated acid diaphragm pump 15 is installed on the concentrated acid input pipe 12. The concentrated acid diaphragm pump 15 can control the start or stop of the concentrated acid solution transport, thereby precisely controlling the input amount of concentrated acid solution in the acidic solution tank 4. The concentrated acid diaphragm pump 15 is a DBY type electric diaphragm pump.

[0055] Meanwhile, the main water pipe 14 supplies purified water to the acidic solution tank 4 via the first water pipe 11. The first water pipe 11 is equipped with a first water supply valve 13. By opening or closing the first water supply valve 13, the flow rate of purified water can be precisely controlled, allowing the concentrated acid solution to be mixed with purified water according to a preset ratio, thereby diluting the concentrated acid solution to a standard concentration. Furthermore, the acidic solution tank 4 is equipped with a Hastelloy C276 electric heating element, which heats the acidic solution inside using electric heating.

[0056] This setup not only avoids the tedious manual preparation of solutions and eliminates the safety risks that operators may face when handling concentrated acid solutions, but also ensures the accuracy and consistency of the prepared acidic solutions, significantly improving operational safety and work efficiency.

[0057] When the first output valve 6 is opened, the prepared acidic solution in the acidic solution tank 4 flows into the CIP cleaning pipe 1 through the acidic output pipe 5, and is then transported to the tank that needs cleaning via the CIP cleaning pipe 1. Next, when the first return valve 8 is opened, the used acidic solution is transported to the acidic return pipe 7 through the CIP return pipe 2, and then returns to the acidic solution tank 4.

[0058] If the acidic solution needs to be reused, the first output valve 6 can be opened again to allow it to re-enter the CIP cleaning pipe 1; if the acidic solution cannot be reused, the first waste liquid valve 10 can be opened to allow it to flow through the acidic waste liquid pipe 9 into the main waste liquid pipe 3, and finally be transported to the subsequent treatment stage through the main waste liquid pipe 3.

[0059] Open the concentrated acid connection valve 16, and the pure water in the main water pipe 14 enters the concentrated acid input pipe 12 through the concentrated acid connection pipe 30 to clean the inner walls of the concentrated acid input pipe 12 and the concentrated acid connection pipe 30. The cleaned pure water flows into the acidic solution tank 4, and then flows into the main waste liquid pipe 3 through the acidic waste liquid outlet. Finally, it is transported to the subsequent treatment stage through the main waste liquid pipe 3.

[0060] The alkaline conveying structure includes an alkaline solution tank 17 with a heating function, an alkaline output port located on the side wall of the alkaline solution tank 17, an alkaline output port connected to the CIP cleaning pipe 1 via an alkaline output pipe 18, a second output valve 19 on the alkaline output pipe 18, an alkaline reflux port located at the top of the alkaline solution tank 17, an alkaline reflux port connected to the CIP reflux pipe 2 via an alkaline reflux pipe 20, and a second reflux valve 21 on the alkaline reflux pipe 20.

[0061] Secondly, the alkaline waste liquid outlet is located at the bottom of the alkaline solution tank 17. The alkaline waste liquid outlet is connected to the main waste liquid pipeline 3 through the alkaline waste liquid pipe 22. The alkaline waste liquid pipe 22 is equipped with a second waste liquid valve 23. The top of the alkaline solution tank 17 is connected to a second water pipe 24 and a concentrated alkali input pipe 25 for conveying concentrated alkali into it. The second water pipe 24 is equipped with a second water supply valve 26. The second water pipe 24 is connected to the main water pipe 14 for conveying pure water into the second water pipe 24. The concentrated alkali input pipe 25 is equipped with a concentrated alkali diaphragm pump 27. The end of the concentrated alkali input pipe 25 away from the alkaline solution tank 17 is connected to the main water pipe 14 through a concentrated alkali connecting pipe 28. The concentrated alkali connecting pipe 28 is equipped with a concentrated alkali connecting valve 29.

[0062] In this embodiment, the concentrated alkali input pipe 25 can deliver the concentrated alkali solution to the alkaline solution tank 17, and a concentrated alkali diaphragm pump 27 is installed on the concentrated alkali input pipe 25. The concentrated alkali diaphragm pump 27 can control the start or stop of the concentrated alkali solution delivery, thereby precisely controlling the input amount of concentrated alkali solution in the alkaline solution tank 17. The concentrated alkali diaphragm pump 27 is a DBY type electric diaphragm pump. At the same time, the main water pipe 14 delivers purified water to the alkaline solution tank 17 through the second water pipe 24. The second water pipe 24 is equipped with a second water supply valve 26. By opening or closing the second water supply valve 26, the delivery amount of purified water can be precisely controlled, thereby mixing the concentrated alkali solution and purified water according to a preset ratio, and then diluting the concentrated alkali solution to the standard concentration. In addition, an Incoloy 800 electric heating tube is installed in the alkaline solution tank 17 to heat the alkaline solution inside by electric heating.

[0063] This setup not only avoids the tedious manual preparation of alkaline solutions and eliminates the safety risks that operators may face when handling concentrated alkaline solutions, but also ensures the accuracy and consistency of the prepared concentrated alkaline solutions, significantly improving operational safety and work efficiency.

[0064] When the second output valve 19 is opened, the alkaline solution prepared in the alkaline solution pipe can flow into the CIP cleaning pipe 1 through the alkaline output pipe 18, and then be transported to the tank that needs to be cleaned via the CIP cleaning pipe 1. Next, when the second return valve 21 is opened, the used alkaline solution is transported to the alkaline return pipe 20 through the CIP return pipe 2, and then returns to the alkaline solution tank 17.

[0065] If the alkaline solution needs to be reused, the second output valve 19 can be opened again to allow it to re-enter the CIP cleaning pipe 1; if the alkaline solution cannot be reused, the second waste liquid valve 23 can be opened to allow it to flow into the main waste liquid pipe 3 through the alkaline waste liquid pipe 22, and finally be transported to the subsequent treatment stage through the main waste liquid pipe 3.

[0066] When the concentrated alkali connection valve 29 is opened, the purified water in the main water pipe 14 enters the concentrated alkali input pipe 25 through the concentrated alkali connection pipe 28, flushing the inner walls of the concentrated alkali connection pipe 28 and the concentrated alkali input pipe 25. The wastewater generated from flushing flows directly into the alkaline solution tank 17, and then is discharged into the main waste liquid pipeline 3 through the alkaline waste liquid outlet, and finally transported to the subsequent treatment stage by the main waste liquid pipeline 3.

[0067] The hot water delivery structure includes a hot water tank 31 with a heating function, a hot water outlet located on the side wall of the hot water tank 31, a hot water outlet connected to a CIP cleaning pipe 1 via a hot water outlet pipe 32, a third outlet valve 33 on the hot water outlet pipe 32, a hot water return port located at the top of the hot water tank 31, a hot water return port connected to a CIP return pipe 2 via a hot water return pipe 34, and a third return valve 35 on the hot water return pipe 34.

[0068] Secondly, the hot water waste outlet is located at the bottom of the hot water tank 31. The hot water waste outlet is connected to the main waste pipe 3 through the hot water waste pipe 36. The hot water waste pipe 36 is equipped with a third waste valve 37. The top of the hot water tank 31 is connected to a third water pipe 38. The third water pipe 38 is equipped with a third water supply valve 39. The third water pipe 38 is connected to the main water pipe 14, which can supply pure water into the third water pipe 38.

[0069] In this embodiment, the main water pipe 14 supplies purified water to the hot water tank 31 through the third water pipe 38. The third water pipe 38 is equipped with a third water supply valve 39, which allows for precise control of the purified water supply by opening or closing the valve. Furthermore, the hot water tank 31 is equipped with an Incoloy 800 electric heating element, which heats the purified water inside using electric heating.

[0070] When the third output valve 33 is opened, hot water in the hot water tank 31 flows into the CIP cleaning pipe 1 through the hot water output pipe 32, and is then transported to the tank that needs cleaning via the CIP cleaning pipe 1. Next, when the first return valve 8 is opened, the used hot water is transported to the hot water return pipe 34 through the CIP return pipe 2, and then returns to the hot water tank 31. If the hot water needs to be reused, the third output valve can be opened again to allow it to re-enter the CIP cleaning pipe 1; if the hot water cannot be reused, the third waste liquid valve 37 is opened to allow it to flow into the main waste liquid pipe 3 through the hot water waste liquid pipe 36, and is ultimately transported to the subsequent processing stage via the main waste liquid pipe 3.

[0071] The return water conveying structure includes a return water tank 40, a return water outlet located on the side wall of the return water tank 40, a return water outlet connected to the CIP cleaning pipe 1 via a return water outlet pipe 41, a fourth outlet valve 42 on the return water outlet pipe 41, a return water reflux port located at the top of the return water tank 40, a return water reflux port connected to the CIP reflux pipe 2 via a return water reflux pipe 43, and a fourth reflux valve 44 on the return water reflux pipe 43.

[0072] Secondly, the wastewater return outlet is located at the bottom of the return water tank 40. The wastewater return outlet is connected to the main wastewater pipe 3 through the wastewater return pipe 45. The wastewater return pipe 45 is equipped with a fourth wastewater valve 46. The top of the return water tank 40 is connected to a fourth water pipe 47. The fourth water pipe 47 is equipped with a fourth water supply valve 48. The fourth water pipe 47 is connected to the main water pipe 14, which can supply pure water into the fourth water pipe 47.

[0073] In this embodiment, the main water pipe 14 supplies purified water to the return water tank 40 through the fourth water pipe 47. The fourth water pipe 47 is equipped with a fourth water supply valve 48. By opening or closing the fourth water supply valve 48, the amount of purified water supplied can be precisely controlled. When the fourth output valve 42 is opened, the purified water in the return water tank 40 can flow into the CIP cleaning pipe 1 through the return water output pipe 41, and then be transported to the tank that needs to be cleaned through the CIP cleaning pipe 1.

[0074] Secondly, when the fourth return valve 44 is opened, the used purified water is transported through the CIP return pipe 2 to the return water return pipe 43, and then returns to the return water tank 40. If the purified water needs to be reused, the fourth output valve can be opened again to allow it to re-enter the CIP cleaning pipe 1; if the purified water cannot be reused, the fourth waste liquid valve 46 is opened to allow it to flow through the return water waste liquid pipe 45 into the main waste liquid pipe 3, and finally be transported to the subsequent treatment stage through the main waste liquid pipe 3.

[0075] The acidic solution conveying structure is provided with an acidic exhaust port at the top, the alkaline solution conveying structure is provided with an alkaline exhaust port at the top, and the hot water conveying structure is provided with a hot water exhaust port at the top. The acidic exhaust port, the alkaline exhaust port, and the hot water exhaust port are all connected to a main exhaust pipe 49 for discharging the gas inside the acidic solution conveying structure, the alkaline solution conveying structure, and the hot water conveying structure.

[0076] In this embodiment, when the acidic solution in the acidic solution tank 4 is heated, the generated gas is discharged into the main exhaust pipe 49 through the acidic exhaust port; similarly, when the alkaline solution in the alkaline solution tank 17 is heated, the generated gas is discharged into the main exhaust pipe 49 through the alkaline exhaust port; when the purified water in the hot water tank 31 is heated, the generated gas is discharged into the main exhaust pipe 49 through the hot water exhaust port. All gases are ultimately transported to the subsequent processing unit through the main exhaust pipe 49, achieving unified collection and centralized processing of the gases.

[0077] The end of the CIP cleaning pipe 1 near the liquid flow direction is provided with a cleaning valve 50 and a connecting pipe 51. The end of the connecting pipe 51 is connected to the CIP return pipe 2. The connecting pipe 51 is provided with a connecting valve 52 and a first check valve 53. The CIP return pipe 2 is provided with a second check valve 54. The second check valve 54 is located between the end of the CIP cleaning pipe 1 away from the main waste liquid pipe 3 and the connecting pipe 51. The end of the CIP cleaning pipe 1 away from the cleaning valve 50 is connected to the main water pipe 14 through a connecting water pipe. The connecting water pipe is provided with a connecting valve 55.

[0078] In this embodiment, when the connecting valve 55 is opened, the main water pipe 14 delivers purified water to the CIP cleaning pipe 1 through the connecting water pipe to clean the inner wall of the CIP cleaning pipe 1. After the cleaning valve 50 is closed and the connecting valve 52 is opened, this purified water will flow into the CIP return pipe 2 through the connecting pipe 51, thereby continuing to clean the inner wall of the CIP return pipe 2. During this process, the second one-way valve 54 can effectively prevent purified water from flowing back into the extraction tank through the CIP return pipe 2, while the first one-way valve 53 can prevent the liquid in the CIP return pipe 2 from flowing back into the CIP cleaning pipe 1 through the connecting pipe 51, thereby ensuring that the inner walls of the CIP cleaning pipe 1 and the CIP return pipe 2 can be effectively cleaned.

[0079] A tubular heat exchanger 56 and a centrifugal pump 57 are sequentially arranged near the end of the CIP cleaning pipe 1 along the direction of liquid flow. Both the tubular heat exchanger 56 and the centrifugal pump 57 are located between the connecting pipe 51 and the connecting water pipe. The tubular heat exchanger 56 is connected to a steam delivery pipe 58 for delivering steam into it, and a steam valve 59 is provided on the steam delivery pipe 58.

[0080] In this embodiment, when the steam valve 59 is opened, steam enters the tubular heat exchanger 56 through the delivery pipe. The tubular heat exchanger 56 uses the thermal energy of the steam to heat the acidic solution, alkaline solution, hot water, and pure water flowing through it, so that they reach and maintain the required temperature.

[0081] This heating process ensures that all liquids have sufficient heat when delivered to the tank to be cleaned, thus avoiding any impact on the final cleaning effect due to insufficient temperature. Centrifugal pump 57 provides power for the delivery of acidic solutions, alkaline solutions, hot water, and purified water to CIP cleaning pipe 1, ensuring a stable and continuous supply of these solutions to the tank during the cleaning process.

[0082] Secondly, the tubular heat exchanger 56 is located between the connecting pipe 51 and the connecting water pipe. When the connecting valve 55 is opened, the pure water transported by the main water pipe 14 enters the CIP cleaning pipe 1 through the connecting water pipe and flows through the internal piping of the tubular heat exchanger 56. This arrangement not only cleans the inner wall of the CIP cleaning pipe 1, but also effectively cleans the internal piping of the tubular heat exchanger 56.

[0083] In this embodiment, the acid solution tank 4, the alkaline solution tank 17, the hot water tank 31, and the return water tank 40 are respectively connected to the CIP cleaning pipe 1. Acidic solution, alkaline solution, hot water, and purified water can be supplied to the CIP cleaning pipe 1 as needed, and then transported to the tank to be cleaned through the CIP cleaning pipe 1. Compared with the prior art, this embodiment avoids direct contact between operators and acidic and alkaline solutions, thereby ensuring the safety of the operation process.

[0084] In addition, the acidic solution, alkaline solution, hot water and purified water after cleaning can be returned to the acidic solution tank 4, alkaline solution tank 17, hot water tank 31 and return water tank 40 through the CIP return pipe 2, thereby realizing the multiple recycling of acidic solution, alkaline solution, hot water and purified water, thus significantly improving the utilization rate of chemical reagents and water resources.

[0085] The above are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A washing device for tea leaves after extraction, characterized in that: The system includes an acidic conveying structure, an alkaline conveying structure, a hot water conveying structure, and a return water conveying structure. The acidic conveying structure has an acidic reflux port, an acidic output port, and an acidic waste liquid port. The alkaline conveying structure has an alkaline reflux port, an alkaline output port, and an alkaline waste liquid port. The hot water conveying structure has a hot water reflux port, a hot water output port, and a hot water waste liquid port. The return water conveying structure has a return water reflux port, a return water output port, and a return water waste liquid port. The acidic output port, alkaline output port, hot water output port, and return water output port are all connected to a connection for external discharge. The system includes a CIP cleaning tube for supplying acidic solutions, alkaline solutions, hot water, and purified water. The acidic reflux port, alkaline reflux port, hot water reflux port, and purified water reflux port are all connected to a CIP reflux tube for conveying the reflux liquid of the acidic solution, alkaline solution, hot water, and purified water. The end of the CIP reflux tube is connected to a main waste liquid pipe for discharging the acidic solution, alkaline solution, hot water, and purified water that cannot be reused. The acidic waste liquid port, alkaline waste liquid port, hot water waste liquid port, and purified water waste liquid port are each connected to the main waste liquid pipe.

2. The tea-extraction cleaning device according to claim 1, characterized in that: The acid delivery structure includes an acid solution tank with a heating function. An acid output port is located on the side wall of the acid solution tank and is connected to a CIP cleaning pipe via an acid output pipe. A first output valve is provided on the acid output pipe. An acid reflux port is located at the top of the acid solution tank and is connected to a CIP reflux pipe via an acid reflux pipe. A first reflux valve is provided on the acid reflux pipe. An acid waste liquid port is located at the bottom of the acid solution tank and is connected to a main waste liquid pipe via an acid waste liquid pipe. A first waste liquid valve is provided on the acid waste liquid pipe. A first water pipe and a concentrated acid input pipe for conveying concentrated acid are connected to the top of the acid solution tank. A first water supply valve is provided on the first water pipe. A main water pipe for conveying pure water is connected to the first water pipe. A concentrated acid diaphragm pump is provided on the concentrated acid input pipe. The end of the concentrated acid input pipe away from the acid solution tank is connected to the main water pipe via a concentrated acid connection pipe. A concentrated acid connection valve is provided on the concentrated acid connection pipe.

3. The tea-extraction cleaning device according to claim 1, characterized in that: The alkaline delivery structure includes an alkaline solution tank with a heating function. An alkaline output port is located on the side wall of the alkaline solution tank and is connected to a CIP cleaning pipe via an alkaline output pipe. A second output valve is provided on the alkaline output pipe. An alkaline reflux port is located at the top of the alkaline solution tank and is connected to a CIP reflux pipe via an alkaline reflux pipe. A second reflux valve is provided on the alkaline reflux pipe. An alkaline waste liquid port is located at the bottom of the alkaline solution tank and is connected to a main waste liquid pipe via an alkaline waste liquid pipe. A second waste liquid valve is provided on the alkaline waste liquid pipe. A second water pipe and a concentrated alkali input pipe for conveying concentrated alkali are connected to the top of the alkaline solution tank. A second water supply valve is provided on the second water pipe. The second water pipe is connected to a main water pipe for conveying pure water. A concentrated alkali diaphragm pump is provided on the concentrated alkali input pipe. The end of the concentrated alkali input pipe away from the alkaline solution tank is connected to the main water pipe via a concentrated alkali connecting pipe. A concentrated alkali connecting pipe is provided with a concentrated alkali connecting valve.

4. The tea-extraction cleaning device according to claim 1, characterized in that: The hot water delivery structure includes a hot water tank with a heating function. The hot water outlet is located on the side wall of the hot water tank and is connected to a CIP cleaning pipe via a hot water outlet pipe. A third outlet valve is provided on the hot water outlet pipe. The hot water return outlet is located at the top of the hot water tank and is connected to a CIP return pipe via a hot water return pipe. A third return valve is provided on the hot water return pipe. The hot water waste outlet is located at the bottom of the hot water tank and is connected to a main waste liquid pipe via a hot water waste liquid pipe. A third waste liquid valve is provided on the hot water waste liquid pipe. A third water pipe is connected to the top of the hot water tank and is equipped with a third water supply valve. The third water pipe is connected to a main water pipe that can supply purified water to the third water pipe.

5. The tea-extraction cleaning device according to claim 1, characterized in that: The return water conveying structure includes a return water tank, a return water outlet located on the side wall of the return water tank, the return water outlet connected to the CIP cleaning pipe via a return water outlet pipe, a fourth outlet valve on the return water outlet pipe, a return water reflux port located at the top of the return water tank, the return water reflux port connected to the CIP reflux pipe via a return water reflux pipe, a fourth reflux valve on the return water reflux pipe, a return water waste liquid outlet located at the bottom of the return water tank, the return water waste liquid outlet connected to the main waste liquid pipe via a return water waste liquid pipe, a fourth waste liquid valve on the return water waste liquid pipe, a fourth water pipe connected to the top of the return water tank, a fourth water supply valve on the fourth water pipe, and the fourth water pipe connected to the main water pipe into which pure water can be supplied.

6. The tea-extraction cleaning device according to claim 1, characterized in that: The acidic solution conveying structure is provided with an acidic exhaust port at the top, the alkaline solution conveying structure is provided with an alkaline exhaust port at the top, and the hot water conveying structure is provided with a hot water exhaust port at the top. The acidic exhaust port, the alkaline exhaust port, and the hot water exhaust port are all connected to a main exhaust pipe for discharging the gas inside the acidic solution conveying structure, the alkaline solution conveying structure, and the hot water conveying structure.

7. The tea-extraction cleaning device according to claim 5, characterized in that: The CIP cleaning pipe is provided with a cleaning valve and a connecting pipe at its end in sequence. The end of the connecting pipe is connected to the CIP return pipe. The connecting pipe is provided with a connecting valve and a first check valve in sequence. The CIP return pipe is provided with a second check valve. The second check valve is located between the end of the CIP cleaning pipe away from the main waste liquid pipe and the connecting pipe. The end of the CIP cleaning pipe away from the cleaning valve is connected to the main water pipe through a connecting water pipe. The connecting water pipe is provided with a connecting valve.

8. The tea-extraction cleaning device according to claim 7, characterized in that: The CIP cleaning tube is equipped with a tubular heat exchanger and a centrifugal pump at its end. Both the tubular heat exchanger and the centrifugal pump are located between the connecting pipe and the connecting water pipe. The tubular heat exchanger is connected to a steam delivery pipe for supplying steam into it, and the steam delivery pipe is equipped with a steam valve.

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