CIP cleaning system

Abstract

The utility model relates to food equipment technical field provides a CIP cleaning system, include: fresh water jar, disinfectant jar, acid jar, alkali jar, fresh water pipeline, cleaning pipeline and heating assembly, fresh water jar disinfectant jar acid jar with alkali jar all with fresh water pipeline with cleaning pipeline fluid intercommunication, heating assembly includes heating pipeline and first heat exchanger, heating pipeline is in order to be provided with acid jar with alkali jar, heating pipeline with fresh water pipeline fluid intercommunication, first heat exchanger installs in heating pipeline. Like this, can effectively improve the cleaning efficiency of dairy factory equipment, reduces manual operation step, and then reduces the error rate in the cleaning process.

Description

Technical Field

[0001] This utility model relates to the field of food equipment technology, and in particular to a CIP cleaning system. Background Technology

[0002] Cleaning equipment that comes into direct contact with products is an essential part of the food production process. Dairy plants typically begin by thoroughly cleaning equipment surfaces with chemical detergents, followed by disinfection. Simultaneously, consideration is given to reducing the burden on the wastewater treatment system, which can significantly reduce wastewater treatment costs.

[0003] Traditional dairy plant cleaning techniques have several drawbacks. For example, dairy equipment used to be cleaned manually with brushes and cleaning solutions (and still is in some places). Cleaning workers had to disassemble the equipment and crawl into large tanks to clean the equipment surface. This was not only laborious and unhygienic, but also prone to secondary contamination and misoperation. Products were also often contaminated by equipment that was not thoroughly cleaned. Utility Model Content

[0004] This invention provides a CIP cleaning system, which aims to solve the problems of cumbersome manual operation, error-proneness, and low efficiency of existing dairy plant cleaning systems.

[0005] This utility model provides a CIP cleaning system, including: a clean water tank, a disinfectant tank, an acid tank, an alkali tank, a clean water pipeline, a cleaning pipeline, and a heating component;

[0006] The clean water tank, the disinfectant tank, the acid tank, and the alkali tank are all in fluid communication with the clean water pipeline and the cleaning pipeline. The heating assembly includes a heating pipeline and a first heat exchanger. The heating pipeline passes through the acid tank and the alkali tank in sequence and is in fluid communication with the clean water pipeline. The first heat exchanger is installed on the heating pipeline.

[0007] According to the CIP cleaning system provided by this utility model, the heating component further includes a first spiral heating tube and a second spiral heating tube. The first spiral heating tube is installed in the acid tank and is in fluid communication with the heating pipeline. The second spiral heating tube is installed in the alkali tank and is in fluid communication with the heating pipeline.

[0008] According to the present invention, a CIP cleaning system includes a heating pipeline comprising a first heating tube, a second heating tube, and a third heating tube. The first heating tube is inserted into the acid tank, and its first end is connected to the first connection port of the first heat exchanger. The second heating tube is inserted into the alkali tank, and its first end is connected to the second connection port of the first heat exchanger. The second end of the first heating tube is in fluid communication with the second end of the second heating tube through the third heating tube.

[0009] According to the CIP cleaning system provided by this utility model, the heating pipeline further includes a fourth heating tube body, the clean water pipeline includes a main clean water line and a first clean water branch line, the first end of the first heating tube body is connected to the inlet end of the switching valve, the first end of the fourth heating tube body is connected to the first outlet end of the switching valve, the second end of the fourth heating tube body is connected to the first connection port of the first heat exchanger, the first end of the first clean water branch line is connected to the second outlet end of the switching valve, the second end of the first clean water branch line is in fluid communication with the alkali tank, and the main clean water line is in fluid communication with the first heating tube body.

[0010] According to the CIP cleaning system provided by this utility model, it further includes a first agitator, which is installed in the acid tank; and / or

[0011] A second agitator is installed in the alkali tank.

[0012] According to the CIP cleaning system provided by this utility model, it further includes a first temperature sensor, which is installed in the acid tank; and / or...

[0013] A second temperature sensor is installed in the alkali tank.

[0014] According to the present invention, a CIP cleaning system is provided, wherein the cleaning pipeline includes multiple cleaning branches connected in parallel, and the CIP cleaning system further includes a second heat exchanger configured to heat the fluid in each of the cleaning branches.

[0015] According to the CIP cleaning system provided by this utility model, the second heat exchanger is located near the liquid outlet of each of the cleaning branches.

[0016] According to the present invention, a CIP cleaning system further includes a return liquid pipeline, which includes a main return liquid pipeline, a first return liquid branch pipeline, and a second return liquid branch pipeline. The first end of the first return liquid branch pipeline is connected to the main return liquid pipeline, the second end of the first return liquid branch pipeline is connected to the acid tank, the first end of the second return liquid branch pipeline is connected to the main return liquid pipeline, and the second end of the second return liquid branch pipeline is connected to the alkali tank.

[0017] According to the present invention, a CIP cleaning system further includes a return liquid bypass, which is connected in parallel to the return liquid main line. The diameter of the return liquid bypass is smaller than the diameter of the return liquid main line, and the return liquid bypass is used for air bubbles in the return liquid to flow through.

[0018] The CIP cleaning system provided by this utility model delivers clean water to a clean water tank, a disinfectant tank, an acid tank, and an alkali tank via a clean water pipeline, thereby preparing the disinfectant, acidic cleaning solution, and alkaline cleaning solution and ensuring that their concentrations meet usage standards. Furthermore, the cleaning pipeline sequentially delivers the clean water, disinfectant, acidic cleaning solution, and alkaline cleaning solution to the equipment to be cleaned in a specific order. The heating pipeline is fluidly connected to the clean water pipeline, providing a certain amount of clean water to the heating pipeline, using clean water as the heat exchange medium. A first heat exchanger is installed on the heating pipeline to exchange heat with the liquid in the heating pipeline, raising the liquid temperature to a set value. Since the heating pipeline passes sequentially through the acid tank and the alkali tank, it can heat the liquid in these two tanks; that is, heating of both the acidic and alkaline cleaning solutions can be achieved through a single first heat exchanger. This effectively improves the cleaning efficiency of dairy plant equipment, reduces manual operation steps, and thus lowers the error rate during the cleaning process. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the CIP cleaning system provided by this utility model.

[0021] Figure label:

[0022] 1. Clean water tank; 2. Disinfectant tank; 3. Acid tank; 4. Alkali tank; 5. Clean water pipeline; 51. Main clean water pipeline; 52. First clean water branch pipeline; 53. Second clean water branch pipeline; 54. Third clean water branch pipeline; 55. Fourth clean water branch pipeline; 6. Cleaning pipeline; 61. Second heat exchanger; 7. First heat exchanger; 8. Heating pipeline; 81. First heating tube; 82. Second heating tube; 83. Third heating tube; 84. Fourth heating tube; 85. Switching valve; 9. First spiral heating tube; 10. Second spiral heating tube; 11. First stirrer; 12. Second stirrer; 13. Return pipeline; 131. Main return pipeline; 132. First return branch pipeline; 133. Second return branch pipeline; 134. Return bypass pipeline. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] CIP cleaning, or Cleaning in Place, refers to the process of cleaning equipment or pipelines without disassembling them, using a specialized cleaning solution circulated within the equipment or pipelines. CIP cleaning is widely used in the food, beverage, and pharmaceutical industries and is a highly efficient and hygienic cleaning method.

[0025] The main steps of the CIP cleaning method include:

[0026] Rinsing: Rinse the system with low-grade water or recycled cleaning solvent to remove residues from the surface.

[0027] Alkaline washing: This involves passing a heated alkaline solution through equipment or pipes to clean and remove organic contaminants such as grease and food residue.

[0028] Pickling: This involves passing an acid solution through the system to neutralize any residual alkaline cleaning agent and remove inorganic substances such as rust and scale.

[0029] Disinfection: Using hot water, steam, or chemical disinfectants to disinfect equipment or pipes to kill bacteria and other microorganisms.

[0030] Final Rinse: Use purified water for a final rinse to remove all residual chemical solutions and disinfectants.

[0031] In summary, CIP cleaning is an efficient, hygienic, and environmentally friendly cleaning method that can ensure the hygiene and safety of equipment or pipelines, and improve product quality and safety.

[0032] like Figure 1 As shown, the CIP cleaning system of this utility model embodiment includes: a clean water tank 1, a disinfectant tank 2, an acid tank 3, an alkali tank 4, a clean water pipeline 5, a cleaning pipeline 6, and a heating component. The clean water tank 1 is specifically used to store clean water, the disinfectant tank 2 is responsible for storing disinfectant, the acid tank 3 is used to store acidic cleaning liquid, and the alkali tank 4 is used to store alkaline cleaning liquid.

[0033] The clean water tank 1, disinfectant tank 2, acid tank 3 and alkali tank 4 are all in fluid communication with the clean water pipeline 5 and the cleaning pipeline 6. The heating component includes a heating pipeline 8 and a first heat exchanger 7. The heating pipeline 8 is sequentially installed through the acid tank 3 and the alkali tank 4. The heating pipeline 8 is in fluid communication with the clean water pipeline 5. The first heat exchanger 7 is installed on the heating pipeline 8.

[0034] Specifically, clean water can be delivered to clean water tank 1, disinfectant tank 2, acid tank 3 and alkali tank 4 through clean water pipeline 5, thereby completing the preparation of disinfectant, acidic cleaning solution and alkaline cleaning solution and ensuring that their concentrations meet the usage standards.

[0035] In addition, using cleaning pipeline 6, clean water, disinfectant, acidic cleaning solution, and alkaline cleaning solution are sequentially delivered to the equipment to be cleaned in a specific order, such as water washing, alkaline washing, second water washing, acid washing, second water washing, and disinfectant cleaning. For example, clean water tank 1, disinfectant tank 2, acid tank 3, and alkaline tank 4 are all connected to cleaning pipeline 6 through corresponding pipes, and each pipe is equipped with a valve.

[0036] In practical applications, the heating pipe 8 is fluidly connected to the clean water pipe 5, which provides a certain amount of clean water to the heating pipe 8, thus using clean water as the heat exchange medium. The first heat exchanger 7 is installed on the heating pipe 8 to exchange heat with the liquid in the heating pipe 8, bringing the liquid temperature in the pipe to a set value. Since the heating pipe 8 passes sequentially through the acid tank 3 and the alkali tank 4, it can heat the liquids in these two tanks; that is, heating of both acidic and alkaline cleaning solutions can be achieved through a single set of first heat exchangers 7. The heating pipe 8 may be equipped with a pump to drive the flow of the heat exchange medium.

[0037] The CIP cleaning system of this utility model embodiment can effectively improve the cleaning efficiency of dairy plant equipment, reduce manual operation steps, and thus reduce the error rate in the cleaning process.

[0038] In optional embodiments, such as Figure 1As shown, the heating assembly also includes a first spiral heating tube 9 and a second spiral heating tube 10. The first spiral heating tube 9 is installed in the acid tank 3 and is in fluid communication with the heating pipeline 8. The second spiral heating tube 10 is installed in the alkali tank 4 and is in fluid communication with the heating pipeline 8.

[0039] Specifically, the first spiral heating pipe 9 is installed inside the acid tank 3 and is in fluid communication with the heating pipe 8, which can increase the heating area and make the liquid in the acid tank 3 heat up more evenly and faster; the second spiral heating pipe 10 is installed inside the alkali tank 4 and is also in fluid communication with the heating pipe 8, which can play a similar efficient heating role for the liquid in the alkali tank 4, thereby ensuring the stable operation of the cleaning system under different working conditions.

[0040] In optional embodiments, such as Figure 1 As shown, the heating pipeline 8 includes a first heating tube 81, a second heating tube 82, and a third heating tube 83. The first heating tube 81 is inserted into the acid tank 3, and its first end is connected to the first connection port of the first heat exchanger 7. The second heating tube 82 is inserted into the alkali tank 4, and its first end is connected to the second connection port of the first heat exchanger 7. The second end of the first heating tube 81 is in fluid communication with the second end of the second heating tube 82 through the third heating tube 83.

[0041] It should be noted that the first heating tube 81 passes through the acid tank 3, and its exposed first end is connected to the first connection port of the first heat exchanger 7; the second heating tube 82 passes through the alkali tank 4, and its exposed first end is connected to the second connection port of the first heat exchanger 7. The exposed second end of the first heating tube 81 is in fluid communication with the exposed second end of the second heating tube 82 through the third heating tube 83, forming a complete heating cycle system and improving the utilization efficiency of thermal energy.

[0042] It is particularly important to note that there are two ways to achieve heating of the portion of the first heating tube 81 located inside the acid tank 3. One way is that this portion of the first heating tube 81 inside the acid tank 3 is specially designed to directly form a first spiral heating tube 9, thereby increasing the contact area with the liquid inside the acid tank 3 and improving heating efficiency. The other way is to install a separate first spiral heating tube 9 on the portion of the first heating tube 81 located inside the acid tank 3, using this separate spiral heating tube to enhance the heating effect on the liquid inside the acid tank 3.

[0043] Similarly, for heating the alkali tank 4, the portion of the second heating tube 82 located inside the alkali tank 4 also has two heating configurations. First, the portion of the second heating tube 82 inside the alkali tank 4 is designed as a second spiral heating tube 10 to increase the heat exchange area with the liquid inside the alkali tank 4 and improve heating performance. Second, a separate second spiral heating tube 10 is installed on the portion of the second heating tube 82 inside the alkali tank 4 to achieve efficient heating of the liquid inside the alkali tank 4.

[0044] In optional embodiments, such as Figure 1 As shown, the heating pipeline 8 also includes a fourth heating pipe body 84, and the clean water pipeline 5 includes a main clean water line 51 and a first clean water branch line 52. The first end of the first heating pipe body 81 is connected to the inlet end of the switching valve 85, the first end of the fourth heating pipe body 84 is connected to the first outlet end of the switching valve 85, the second end of the fourth heating pipe body 84 is connected to the first connection port of the first heat exchanger 7, the first end of the first clean water branch line 52 is connected to the second outlet end of the switching valve 85, the second end of the first clean water branch line 52 is in fluid communication with the alkali tank 4, and the main clean water line 51 is in fluid communication with the first heating pipe body 81.

[0045] It should be noted that the first end of the first heating tube 81 is connected to the inlet end of the switching valve 85, and the two ends of the fourth heating tube 84 are respectively connected to the first outlet end of the switching valve 85 and the first connection port of the first heat exchanger 7. The clean water pipeline 5 includes a main clean water pipeline 51 and a first clean water branch pipeline 52. The first end of the first clean water branch pipeline 52 is connected to the second outlet end of the switching valve 85, and the second end is in fluid communication with the alkali tank 4. The main clean water pipeline 51 is in fluid communication with the first heating tube 81.

[0046] Understandably, the presence of the switching valve 85 allows the system to flexibly switch the flow direction of the fluid. For example, when it is necessary to directly supply clean water to the alkali tank 4, the clean water supplied by the main clean water line 51 can be directed through the switching valve 85 to enter the alkali tank 4 sequentially through the first heating pipe 81 and the first clean water branch line 52; while when it is necessary to heat the acid tank 3 or the alkali tank 4, the clean water supplied by the main clean water line 51 enters the first heat exchanger 7 sequentially through the first heating pipe 81 and the fourth heating pipe 84. In this way, the adaptability and flexibility of the CIP cleaning system are improved, ensuring cleaning effect and efficiency.

[0047] In addition, the clean water pipeline 5 also includes a second clean water branch 53, a third clean water branch 54, and a fourth clean water branch 55. For example, the main clean water pipeline 51 is fluidly connected to the disinfectant tank 2 through the second clean water branch 53, the main clean water pipeline 51 is fluidly connected to the acid tank 3 through the third clean water branch 54, and the main clean water pipeline 51 is fluidly connected to the clean water tank 1 through the fourth clean water branch 55. Valves can be installed on the main clean water pipeline 51, the first clean water branch 52, the second clean water branch 53, the third clean water branch 54, and the fourth clean water branch 55.

[0048] It is particularly important to note that since the alkaline washing temperature is higher than the acid washing temperature, the liquid heated by the second spiral heating tube 10 can directly enter the first spiral heating tube 9 to heat the acid solution. Furthermore, the used liquid can also return to the main clean water channel 51.

[0049] In optional embodiments, such as Figure 1 As shown, the CIP cleaning system of this embodiment adds a first stirrer 11 and a second stirrer 12 to the acid tank 3 and the alkali tank 4, respectively. The first stirrer 11 is installed in the acid tank 3, and during the heating process, it can continuously stir the acidic cleaning solution in the acid tank 3 to ensure uniform heating and avoid local overheating. Similarly, the second stirrer 12 is installed in the alkali tank 4, and during the heating stage, it can promote the uniform flow and mixing of the alkaline cleaning solution in the alkali tank 4 to ensure uniform heating and avoid local overheating.

[0050] In optional embodiments, such as Figure 1 As shown, the CIP cleaning system of this embodiment further includes a first temperature sensor and a second temperature sensor. The first temperature sensor is installed at a suitable position on the inner wall of the acid tank 3, and can obtain the temperature information of the cleaning solution in the acid tank 3 in real time and accurately; the second temperature sensor is installed in the alkali tank 4, and is used to monitor the temperature of the cleaning solution in the alkali tank 4 in real time.

[0051] During system operation, the first and second temperature sensors continuously operate, transmitting the collected temperature data to the control motherboard in the form of electrical signals. The control motherboard has a built-in preset temperature range. Upon receiving data from the temperature sensors, the control motherboard immediately compares and analyzes it against the preset temperature range.

[0052] If the temperature of the liquid in acid tank 3 or alkali tank 4 is detected to be lower than the preset lower limit, the main control board will respond quickly by adjusting the relevant parameters of the first heat exchanger 7 to increase the heating power. For example, the flow rate of the heating medium entering the first heat exchanger 7 can be increased, or the temperature of the heating medium can be increased.

[0053] Conversely, when the liquid temperature is detected to be higher than the preset upper limit, the control board will take corresponding cooling measures. This may include reducing the flow rate of the heating medium entering the first heat exchanger 7, lowering the temperature of the heating medium, or even directly stopping the heating operation of the first heat exchanger 7. Through temperature monitoring and dynamic heating control, it is possible to ensure that the liquid temperature in the acid tank 3 and / or alkali tank 4 is always maintained within the optimal temperature range.

[0054] In optional embodiments, such as Figure 1As shown, the cleaning pipeline 6 includes multiple cleaning branches connected in parallel. The CIP cleaning system also includes a second heat exchanger 61, which is configured to heat the fluid in each cleaning branch. It should be noted that the parallel structure of the cleaning branches allows each cleaning branch to operate independently without interference, thus adapting to different cleaning needs.

[0055] Meanwhile, the CIP cleaning system of this embodiment of the invention adds a second heat exchanger 61, which can heat the fluid in each cleaning branch. When the liquid flows in the cleaning branch, it flows through the second heat exchanger 61. The second heat exchanger 61 transfers heat to the liquid through heat exchange with a heat source, raising its temperature to a suitable level for cleaning. Multiple cleaning branches can share this single second heat exchanger 61, and the second heat exchanger 61 will heat the liquid in each cleaning branch sequentially according to actual needs. That is, when the second heat exchanger 61 heats the liquid in a certain cleaning branch, the other cleaning branches are in a stopped state.

[0056] In optional embodiments, such as Figure 1 As shown, the second heat exchanger 61 is positioned close to the outlet of each cleaning branch. It should be noted that positioning the second heat exchanger 61 close to the outlet of each cleaning branch provides the CIP cleaning system with more precise temperature control capabilities. By placing the second heat exchanger 61 near the outlet, its heating power can be quickly adjusted, ensuring the liquid reaches a preset temperature range when leaving the cleaning branch.

[0057] For example, during the alkaline cleaning stage, appropriately increasing the temperature of the cleaning solution can enhance its cleaning ability. When the temperature of the cleaning solution is detected to be too low just before it flows out of the cleaning branch, the heating power of the second heat exchanger 61 can be quickly increased to raise the temperature of the cleaning solution to a suitable level.

[0058] In optional embodiments, such as Figure 1 As shown, the CIP cleaning system also includes a return pipeline 13, which includes a main return pipeline 131, a first return pipeline 132, and a second return pipeline 133. The first end of the first return pipeline 132 is connected to the main return pipeline 131, and the second end of the first return pipeline 132 is connected to the acid tank 3. The first end of the second return pipeline 133 is connected to the main return pipeline 131, and the second end of the second return pipeline 133 is connected to the alkali tank 4. Valve bodies can be installed on the main return pipeline 131, the first return pipeline 132, and the second return pipeline 133.

[0059] It should be noted that by separately recovering qualified acid and alkali solutions, the cleaning solution can be treated and reused in a targeted manner, reducing waste of the cleaning solution and lowering production costs.

[0060] In optional embodiments, such as Figure 1 As shown, the CIP cleaning system also includes a return liquid bypass 134, which is connected in parallel to the return liquid main line 131. The diameter of the return liquid bypass 134 is smaller than the diameter of the return liquid main line 131. The return liquid bypass 134 is used for air bubbles in the return liquid to flow through.

[0061] It should be noted that the main return line 131 is partially designed with a U-shape. A bypass line 134 is connected to this U-shaped section of the main return line 131. An instrument is installed in the U-shaped section. The bypass line 134 is positioned vertically above the U-shaped section where the instrument is installed. This allows air bubbles mixed in with the return liquid to pass directly through the bypass line 134 without flowing through the U-shaped section containing the instrument, thus preventing air bubbles from interfering with the accuracy of the instrument measurements. For example, the diameter of the main return line 131 is Ø73, while the diameter of the bypass line 134 is Ø25.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A CIP cleaning system, characterized in that, include: Clean water tank, disinfectant tank, acid tank, alkali tank, clean water pipeline, cleaning pipeline and heating components; The clean water tank, the disinfectant tank, the acid tank, and the alkali tank are all in fluid communication with the clean water pipeline and the cleaning pipeline. The heating assembly includes a heating pipeline and a first heat exchanger. The heating pipeline passes through the acid tank and the alkali tank in sequence and is in fluid communication with the clean water pipeline. The first heat exchanger is installed on the heating pipeline.

2. The CIP cleaning system according to claim 1, characterized in that, The heating assembly further includes a first spiral heating tube and a second spiral heating tube. The first spiral heating tube is installed inside the acid tank and is in fluid communication with the heating pipeline. The second spiral heating tube is installed inside the alkali tank and is in fluid communication with the heating pipeline.

3. The CIP cleaning system according to claim 1, characterized in that, The heating pipeline includes a first heating tube, a second heating tube, and a third heating tube. The first heating tube passes through the acid tank, and its first end is connected to the first connection port of the first heat exchanger. The second heating tube passes through the alkali tank, and its first end is connected to the second connection port of the first heat exchanger. The second end of the first heating tube is in fluid communication with the second end of the second heating tube through the third heating tube.

4. The CIP cleaning system according to claim 3, characterized in that, The heating pipeline also includes a fourth heating tube body. The clean water pipeline includes a main clean water line and a first clean water branch line. The first end of the first heating tube body is connected to the inlet end of the switching valve. The first end of the fourth heating tube body is connected to the first outlet end of the switching valve. The second end of the fourth heating tube body is connected to the first connection port of the first heat exchanger. The first end of the first clean water branch line is connected to the second outlet end of the switching valve. The second end of the first clean water branch line is in fluid communication with the alkali tank. The main clean water line is in fluid communication with the first heating tube body.

5. The CIP cleaning system according to claim 1, characterized in that, It also includes a first agitator, which is installed in the acid tank; and / or, A second agitator is installed in the alkali tank.

6. The CIP cleaning system according to claim 1, characterized in that, It also includes a first temperature sensor, which is installed in the acid tank; and / or, A second temperature sensor is installed in the alkali tank.

7. The CIP cleaning system according to any one of claims 1 to 6, characterized in that, The cleaning pipeline includes multiple cleaning branches connected in parallel, and the CIP cleaning system also includes a second heat exchanger configured to heat the fluid in each of the cleaning branches.

8. The CIP cleaning system according to claim 7, characterized in that, The second heat exchanger is located near the outlet of each of the cleaning branches.

9. The CIP cleaning system according to any one of claims 1 to 6, characterized in that, It also includes a return liquid pipeline, which includes a main return liquid line, a first return liquid branch line, and a second return liquid branch line. The first end of the first return liquid branch line is connected to the main return liquid line, and the second end of the first return liquid branch line is connected to the acid tank. The first end of the second return liquid branch line is connected to the main return liquid line, and the second end of the second return liquid branch line is connected to the alkali tank.

10. The CIP cleaning system according to claim 9, characterized in that, It also includes a return liquid bypass, which is connected in parallel to the return liquid main line. The diameter of the return liquid bypass is smaller than the diameter of the return liquid main line. The return liquid bypass is used for air bubbles in the return liquid to flow through.

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