Fresh milk instant heat sterilization and self - cleaning integrated machine, cleaning system and method

Abstract

The present invention discloses an integrated fresh milk instant heat sterilization and self-cleaning machine, a cleaning system and a cleaning method, which include a plurality of reagent cylinders, a first pump device, a first cleaning pipe, a second cleaning pipe and a first cleaning interface. The first cleaning pipe and the second cleaning pipe are respectively connected to both ends of the first pump device. The first pump device is a two-way pump for pumping to the first cleaning pipe or the second cleaning pipe. Each reagent cylinder is connected with a reagent branch pipeline, and each reagent cylinder is respectively connected to the second cleaning pipe through the reagent branch pipeline. A branch valve is installed in the middle section of the reagent branch pipeline. One end of the first cleaning pipe away from the first pump device is provided with the first cleaning interface, and the first cleaning interface is used to connect the device to be cleaned. By combining the fresh milk instant heat sterilization system and the cleaning system, the fresh milk instant heat sterilization system can, through the pasteurization component, not only kill the pathogenic bacteria and most bacteria in raw milk, but also keep the nutritional components and flavor of fresh milk basically unchanged, and the cleaning system can flush and clean the fresh milk instant heat sterilization system.

Description

Technical Field

[0001] The present invention relates to cleaning equipment, and more specifically, to an integrated fresh milk instant heat sterilization and self-cleaning machine, and also relates to a cleaning system for a fresh milk instant heat sterilization system, and a cleaning method. Background Art

[0002] After fresh milk is collected from a specialized dairy farm, it often needs to be sterilized through the pasteurization process. Currently, fresh milk is usually directly sterilized and packaged in a fresh milk factory, and then put on the market and supplied to the consumer end.

[0003] Currently, there is also some fresh milk directly processed in fresh milk stores. After the fresh milk is collected from the dairy farm, it is directly transported to the fresh milk store through a cold chain system and stored in a tank. When consumers need fresh milk, the fresh milk can be directly pasteurized on-site, and the fresh milk is processed in a way of using it immediately and sterilizing it immediately, which can further improve the experience of fresh milk.

[0004] The fresh milk in the fresh milk store is usually pasteurized by a small instant heat sterilization device. After the instant heat sterilization device is used for a period of time, it usually needs to be cleaned, and usually a small CIP cleaning system is used for rinsing and cleaning to rinse the pipelines and tank containers of the instant heat sterilization device. The CIP cleaning system usually has multiple reagent cylinders. Referring to Figure 13 As shown, the lower end of each reagent cylinder 1 is connected to a reagent branch pipeline 8, and a branch valve 801 is installed on the reagent branch pipeline 8; each reagent branch pipeline 8 is connected to a second cleaning pipe 703 to form multiple branches, and the reagent and clean water are uniformly output from the second cleaning pipe 703. A first pump device 7 is installed on the second cleaning pipe 703 to supply the reagent to the instant heat sterilization device for cleaning the instant heat sterilization device.

[0005] When the reagent in the corresponding reagent cylinder 1 is not needed, the corresponding branch valve 801 is closed, and the reagent cylinder 1 can be cut off from the second cleaning pipe 703. However, in the lower half of the reagent branch pipeline 8, that is, near the connection position between the reagent branch pipeline 8 and the second cleaning pipe 703, the space at this position is relatively closed and there is no direct water flow, and a part of the reagent will still remain. This part of the reagent residue may slowly disperse into the second cleaning pipe 703, and then enter the instant heat sterilization device with the subsequent water flow to cause new pollution. Especially when the equipment is subjected to external vibration or external collision, the reagent residue at the lower end of the reagent branch pipeline 8 may accelerate into the second cleaning pipe 703. If this situation occurs in the middle of the cleaning process, the subsequent washing water can remove the residual pollution. If this situation occurs at the end of the cleaning process, the residual pollution will remain in the pipeline of the instant heat sterilization device and cause pollution to the fresh milk.

[0006] Therefore, a new solution is needed to solve this problem. Summary of the Invention

[0007] The object of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide an instant heat sterilization and self-cleaning integrated machine for fresh milk, a cleaning system and a method.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A cleaning system includes a number of reagent cylinders, a first pump device, a first cleaning pipe, a second cleaning pipe and a first cleaning interface. The first cleaning pipe and the second cleaning pipe are respectively connected to both ends of the first pump device. The first pump device is a two-way pump for pumping from the first cleaning pipe to the second cleaning pipe or from the second cleaning pipe to the first cleaning pipe. Each reagent cylinder is connected with a reagent branch pipe, and each reagent cylinder is respectively connected to the second cleaning pipe through the reagent branch pipe, and a branch valve is installed on the reagent branch pipe; the end of the first cleaning pipe far from the first pump device is provided with the first cleaning interface, and the first cleaning interface is used for connecting the device to be cleaned.

[0010] The present invention is further provided that the reagent branch pipe has an upper branch end and a lower branch end. The upper branch end is upwardly connected to the bottom of the reagent cylinder, and the lower branch end is downwardly connected to the second cleaning pipe; the branch valve is located in the middle section of the reagent branch pipe.

[0011] The present invention is further provided that the reagent cylinder includes a cylinder body, a connecting cylinder and a piston member. The connecting cylinder is fixedly connected to the bottom of the reagent cylinder. The upper end of the connecting cylinder communicates with the cylinder body, and the lower end communicates with the reagent branch pipe.

[0012] The present invention is further provided that the piston member is piston-connected in the connecting cylinder and can seal and separate the upper and lower ends of the connecting cylinder; the piston member is provided with a through hole penetrating up and down, and the piston member is provided with a one-way conduction member for controlling the one-way conduction of the through hole from top to bottom.

[0013] The present invention is further provided that the one-way conduction member includes a connecting portion and an elastic sealing portion. The connecting portion and the elastic sealing portion are integrally connected. The connecting portion is connected to the piston member. The elastic sealing portion elastically fits on the lower side of the piston member and is used for sealing the through hole. The elastic sealing portion can elastically bend downward to open the through hole.

[0014] The present invention is further provided that a pressure relief port is opened on the outer side of the lower part of the connecting cylinder. The pressure relief port is connected with a pressure relief pipe, and a pressure relief valve is installed on the pressure relief pipe.

[0015] The present invention is further configured such that the side wall of the cylinder body is a double-layer structure, including an outer cylinder layer and an inner cylinder layer. The outer cylinder layer is fixedly connected to the bottom of the cylinder body. The inner cylinder layer is slidably connected up and down within the outer cylinder layer, and the outer periphery of the inner cylinder layer is in sealed sliding connection with the inner periphery of the outer cylinder layer. The piston member is installed within the inner cylinder layer. The upper and lower ends of the inner cylinder layer are through, and limiting retaining rings II are provided on the inner periphery at the upper and lower ends.

[0016] The present invention is further configured such that a water passing hole I communicating with the bottom of the cylinder body is provided on the side wall of the outer cylinder layer, and a water passing hole II is provided on the side wall of the inner cylinder layer. The inner cylinder layer has a highest position and a lowest position within the outer cylinder layer. At the highest position, the water passing hole I and the water passing hole II are mutually misaligned and disconnected. At the lowest position, the water passing hole I and the water passing hole II are mutually aligned and communicated.

[0017] The present invention also provides a fresh milk instant heating sterilization and self-cleaning integrated machine, including a fresh milk instant heating sterilization system and the above-mentioned cleaning system.

[0018] The fresh milk instant heating sterilization system includes a milk storage cylinder, a second pump device, a pasteurization assembly, a milk outlet interface, and an interface pipe I. The milk storage cylinder, the second pump device, the pasteurization assembly, and the milk outlet interface are sequentially connected through pipelines. The second pump device is used to pump from the milk storage cylinder to the milk outlet interface. The interface pipe I is detachably installed at the milk outlet interface.

[0019] A cleaning spray head is installed in the milk storage cylinder. The cleaning spray head is connected to a cleaning pipe III. The cleaning pipe III extends out of the milk storage cylinder and is provided with a cleaning interface II. The cleaning interface II is used to connect with the cleaning interface I.

[0020] It further includes a return water interface, a return water pipe, and an interface pipe II. The return water interface is connected to a drain pipe through the return water pipe. The interface pipe II can be detachably connected to the milk outlet interface and the return water interface.

[0021] The present invention is further configured such that the milk storage cylinder and the second pump device are connected through a connecting pipe I. A valve device I is installed on the connecting pipe I. A valve device II is installed on the cleaning pipe III. Both the valve device I and the valve device II are three-way valves and respectively have a branch interface I and a branch interface II. The branch interface I and the branch interface II are communicated through a connecting pipe II. The branch interface I and the branch interface II can achieve on-off switching through the valve device I and the valve device II.

[0022] The present invention also provides a cleaning method, which uses the above-mentioned fresh milk instant heating sterilization and self-cleaning integrated machine to clean the fresh milk instant heating sterilization system. In the cleaning system, four reagent cylinders are provided, namely a first reagent cylinder for storing normal-temperature clear water, a second reagent cylinder for storing an alkaline cleaning reagent, a third reagent cylinder for storing an acidic cleaning reagent, and a fourth reagent cylinder for storing hot water.

[0023] During the cleaning process, first perform the cleaning using cleaning step a, and then perform the cleaning using cleaning step b. Cleaning step a is to clean the pipelines in the fresh milk instant sterilization system using clear water, an alkaline cleaning reagent, and an acidic cleaning reagent.

[0024] Cleaning step b includes:

[0025] Step b1, pump the clear water in the fresh milk instant sterilization system into the second reagent cylinder and the third reagent cylinder through the first pump device to perform a reverse flush on the reagent branch pipelines at the lower parts of the second reagent cylinder and the third reagent cylinder.

[0026] Step b2, draw the clear water in the first reagent cylinder through the first pump device and pump it into the fresh milk instant sterilization system to flush the reagent branch pipeline at the lower part of the first reagent cylinder.

[0027] Step b3, sterilize the pipelines in the fresh milk instant sterilization system using the hot water in the fourth reagent cylinder.

[0028] In summary, the present invention has the following beneficial effects:

[0029] By combining the fresh milk instant sterilization system and the cleaning system, the fresh milk instant sterilization system can perform pasteurization on fresh milk through the pasteurization component, which can not only kill the pathogenic bacteria and most bacteria in raw milk, but also keep the nutritional components and flavor of fresh milk basically unchanged. Through the cleaning system, the equipment and pipelines in the fresh milk instant sterilization system can be flushed and cleaned.

[0030] In the cleaning system, by setting the first pump device as a two-way pump structure, two-way transportation can be achieved. During the cleaning process, clear water can be reversely fed into the corresponding reagent cylinder. During the reverse flow process, the reagent branch pipelines at the lower part of the reagent cylinder can be reversely flushed, and the reagent residues in the reagent branch pipelines can be removed, avoiding the reagent residues from contaminating the equipment to be cleaned.

[0031] By providing a connecting cylinder and a piston member in the reagent cylinder, the piston member can divide the inner cavity of the connecting cylinder into upper and lower chambers. In the lower half chamber of the connecting cylinder, part of the reverse flushing water can be cached, avoiding the reverse flushing water directly entering the reagent cylinder and causing dilution and contamination of the reagent in the reagent cylinder.

[0032] By providing a pressure relief port on the outer side of the lower part of the connecting cylinder and installing a pressure relief valve, when an excessive amount of water rushes back into the connecting cylinder, the pressure inside the connecting cylinder is too high, and the water pressure will push the pressure relief valve to open, releasing the pressure inside the connecting cylinder and discharging the excessive reverse flushing water, thereby avoiding damage to the equipment due to excessive pressure and ensuring the normal reverse flow of the reverse flushing water.

[0033] By adopting a connecting cylinder with an inner and outer double-layer structure, the connection and disconnection of the inner and outer peripheries of the connecting cylinder can be achieved through the up and down movement of the inner cylinder layer. During backwashing, backwashing water can be cached inside the connecting cylinder; during forward flow, the water in the reagent cylinder can smoothly flow through the connecting cylinder, and thus downward water discharge can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 FIG. is a schematic structural diagram of an instant pasteurization and self-cleaning integrated machine for fresh milk in this embodiment;

[0035] Figure 2 FIG. is a schematic structural diagram of the cleaning system in this embodiment;

[0036] Figure 3 FIG. is a schematic structural diagram of the instant pasteurization system for fresh milk in this embodiment;

[0037] Figure 4 FIG. is a schematic connection structure diagram of the milk storage cylinder and the second connecting pipe in the instant pasteurization system for fresh milk in this embodiment;

[0038] Figure 5 FIG. is a three-dimensional sectional view of the first reagent cylinder in this embodiment;

[0039] Figure 6 FIG. is a three-dimensional sectional view of the first connecting cylinder in this embodiment;

[0040] Figure 7 FIG. is a plan sectional view of another connecting cylinder in this embodiment;

[0041] Figure 8 FIG. is a three-dimensional sectional view of another reagent cylinder in this embodiment;

[0042] Figure 9 FIG. is a three-dimensional sectional view of another connecting cylinder in this embodiment;

[0043] Figure 10 FIG. is a plan sectional view of another connecting cylinder when the inner cylinder layer is at the highest position in this embodiment;

[0044] Figure 11 FIG. is a plan sectional view of another connecting cylinder when the inner cylinder layer is at the lowest position in this embodiment;

[0045] Figure 12 FIG. is a schematic structural diagram of the connecting cylinder and the pressure relief valve in this embodiment;

[0046] Figure 13 FIG. is a schematic structural diagram of the cleaning system in the prior art.

[0047] Reference numerals: reagent cartridge 1; first reagent cartridge 101; second reagent cartridge 102; third reagent cartridge 103; fourth reagent cartridge 104; milk storage cartridge 2; stirrer 201; cleaning spray head 202; third cleaning pipe 203; second cleaning interface 204; second valve device 205; second branch interface 206; second pump device 3; first connecting pipe 301; first valve device 302; first branch interface 303; second connecting pipe 304; pasteurization assembly 4; first heating cylinder 410; first heating coil 411; heat exchange coil 412; second heating cylinder 420; second heating coil 421; third heating cylinder 430; third heating coil 431; holding temperature cylinder 440; holding temperature coil 441; cooling cylinder 450; cooling coil 451; milk outlet interface 5; milk outlet valve 501; first interface pipe 502; second interface pipe 503; return water interface 6; return water pipe 601; first pump device 7; first cleaning pipe 701; first cleaning interface 702; second cleaning pipe 703; reagent branch line 8; branch valve 801; upper end of branch pipe 802; lower end of branch pipe 803; drain pipe 9; drain branch pipe 91; drain valve 911; cylinder body 11; bottom; connecting cylinder 12; first limiting retaining ring 121; pressure relief port 122; pressure relief pipe 123; pressure relief valve 124; pressure relief water pipe 125; piston member 13; outer ring body 131; intermediate plate 132; through hole 133; one-way conduction member 134; connecting portion 135; elastic sealing portion 136; outer cylinder layer 14; first water passing hole 141; first sliding seal member 142; inner cylinder layer 15; second water passing hole 151; second limiting retaining ring 152; second sliding seal member 153; spring 16. Detailed implementation manners

[0048] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0049] This embodiment discloses an instant heat sterilization and self-cleaning integrated machine for fresh milk. Referring to Figures 1-3 as shown, it includes a fresh milk instant heat sterilization system and a cleaning system. Among them, the fresh milk instant heat sterilization system is used to temporarily store fresh milk and can pasteurize the fresh milk through the pasteurization assembly 4 to form directly drinkable fresh milk; the cleaning system can clean the fresh milk instant heat sterilization system and rinse it with alkaline reagents, acidic reagents and clean water, and can clean the fresh milk instant heat sterilization system.

[0050] Referring to Figure 1 、 Figure 3As shown in the figure, the fresh milk instant sterilization system includes a milk storage tank 2, a second pump device 3, a pasteurization assembly 4, a milk outlet interface 5, and a first interface pipe 502. The milk storage tank 2, the second pump device 3, the pasteurization assembly 4, and the milk outlet interface 5 are sequentially connected by pipelines.

[0051] The second pump device 3 can pump the fresh milk in the milk storage tank 2 and pump it from the milk storage tank 2 to the milk outlet interface 5. During the flow process, when flowing through the pasteurization assembly 4, the fresh milk can be pasteurized, heated and sterilized to form warm fresh milk. The first interface pipe 502 is detachably installed on the milk outlet interface 5 and has an L-shaped structure, and fresh milk can be output from the first interface pipe 502.

[0052] The milk storage tank 2 and the second pump device 3 are connected by a first connecting pipe 301, and a first valve device 302 is installed on the first connecting pipe 301. The on / off of the first connecting pipe 301 can be controlled through the first valve device 302. A milk outlet valve 501 is installed on the pipeline between the pasteurization assembly 4 and the milk outlet interface 5, and the on / off of the milk outlet interface 5 can be controlled through the milk outlet valve 501. The on / off of the fresh milk pumping pipeline can be controlled through the first valve device 302 and the milk outlet valve 501.

[0053] Refer to Figure 3 As shown in the figure, a stirrer 201 and a cleaning spray head 202 are installed in the milk storage tank 2. The stirrer 201 can stir inside the milk storage tank 2. When storing fresh milk, it can stir the fresh milk to keep the fresh milk in the milk storage tank 2 in a uniform state; during cleaning, it can stir the cleaning reagent to improve the cleaning efficiency. The cleaning spray head 202 can spray inside the milk storage tank 2 and can spray the cleaning liquid onto the inner wall of the milk storage tank 2 to achieve efficient spray cleaning.

[0054] The cleaning spray head 202 is connected to a third cleaning pipe 203, and the cleaning reagent is supplied through the third cleaning pipe 203. The third cleaning pipe 203 extends out of the milk storage tank 2 and is equipped with a second cleaning interface 204. The second cleaning interface 204 can be connected to the first cleaning interface 702 of the cleaning system, and thus the fresh milk instant sterilization system and the cleaning system can be connected. The cleaning reagent in the cleaning system can be sent into the fresh milk instant sterilization system to achieve cleaning. The connection between the first cleaning interface 702 and the second cleaning interface 204 is detachable and is only connected when cleaning is required to prevent the reagent from being accidentally sent into the milk storage tank 2 and causing pollution to the fresh milk.

[0055] Refer to Figure 3 As shown in the figure, the fresh milk instant sterilization system further includes a return water interface 6, a return water pipe 601, and a second interface pipe 503. The return water interface 6 is connected to a drain pipe 9 through the return water pipe 601. The drain pipe 9 is connected to the sewer pipe and is used for discharging waste water. The second interface pipe 503 can be detachably connected to the milk outlet interface 5 and the return water interface 6.

[0056] One of the interface pipes 502 and 503 is selected according to the usage scenario. During the pasteurization of fresh milk, the interface pipe 502 is installed with its end facing downwards to facilitate the collection of fresh milk. During cleaning, the interface pipe 503 is installed, which can connect the milk outlet 5 and the water return port 6, and can discharge the waste water after cleaning from the water return port 6 and the water return pipe 601 to the drain pipe 9 to discharge the waste water after cleaning.

[0057] Refer to Figure 3 As shown, the pasteurization component 4 includes a first heating cylinder 410, a second heating cylinder 420, a third heating cylinder 430, a holding cylinder 440, and a cooling cylinder 450. Inside each cylinder, a heater and a coil are installed for heat exchange. The heater can heat the water inside the cylinder to maintain a certain temperature, and the fresh milk flows through the coil inside the corresponding cylinder to achieve temperature control, thereby realizing pasteurization.

[0058] Among them, the first heating cylinder 410 is provided with a first heating coil 411 and a heat exchange coil 412; the second heating cylinder 420 is provided with a second heating coil 421; the third heating cylinder 430 is provided with a third heating coil 431; the holding cylinder 440 is provided with a holding coil 441; the cooling cylinder 450 is provided with a cooling coil 451. The first heating coil 411, the second heating coil 421, the holding coil 441, the heat exchange coil 412, and the cooling coil 451 are connected in sequence to form the fresh milk conveying pipeline in the pasteurization component 4.

[0059] During the pasteurization process of fresh milk, it is pumped to the first heating coil 411 by the second pump device 3 and heated by the first heating cylinder 410; then it passes through the second heating coil 421 and continues to be heated by the second heating cylinder 420; then it passes through the holding coil 441 and is maintained at a high temperature for a period of time in the holding cylinder 440 for sterilization; then it passes through the heat exchange coil 412, and the high-temperature fresh milk exchanges heat with the slightly lower-temperature first heating cylinder 410, which can reduce the temperature to a certain extent to achieve heat recovery; then it passes through the cooling coil 451, and the fresh milk is cooled by the cooling cylinder 450. The fresh milk at a suitable drinking temperature is finally output from the milk outlet 5 and the interface pipe 502.

[0060] The raw fresh milk in the milk storage cylinder 2 flows through the pasteurization component 4, which can sterilize the raw fresh milk to obtain finished fresh milk. The specific temperatures of the first heating cylinder 410, the second heating cylinder 420, the third heating cylinder 430, the holding cylinder 440, and the cooling cylinder 450 can be specifically set according to the pasteurization situation, as long as the sterilization of fresh milk can be achieved.

[0061] For example, the water bath temperature in the first heating cylinder 410 is 60 - 65 °C. After the fresh milk flows through the first heating cylinder 410, it can be heated to 60 - 62 °C;

[0062] The water bath temperature in the second heating cylinder 420 is 77 - 79 °C. After the fresh milk flows through the second heating cylinder 420, it can be heated to 77 - 79 °C;

[0063] The water bath temperature in the third heating cylinder 430 is 90 - 97 °C. After the fresh milk flows through the third heating cylinder 430, it can be heated to 90 - 95 °C;

[0064] Controlling the water bath temperature in the holding cylinder 440 to be basically the same as that in the third heating cylinder 430 can extend the holding time when the fresh milk flows through, enabling the fresh milk to have a sterilization duration of 15 - 16 seconds, achieving pasteurization, and obtaining sterilized cooked milk;

[0065] Then, the cooked milk flows through the first heating cylinder 410 again for heat exchange in the first heating cylinder 410 to achieve precooling. The waste heat will be transferred to the first heating cylinder 410, and the cooked milk will be cooled, and the temperature can be reduced to 66 - 68 °C;

[0066] Then, the cooked milk flows through the cooling cylinder 450 to cool the cooked milk to a suitable drinking temperature and flows out from the interface pipe 502, that is, the finished fresh milk is obtained.

[0067] The measured indexes of the milk processed by the above fresh milk instant heat sterilization system are shown in Table 1.

[0068] Table 1 Sterilization treatment capacity of the fresh milk instant heat sterilization system

[0069]

[0070] The cleaning system in this embodiment can be applied to the above fresh milk instant heat sterilization self - cleaning integrated machine and can clean the fresh milk instant heat sterilization system.

[0071] Refer to Figure 1 、 Figure 2 As shown, the cleaning system includes several reagent cylinders 1, a first pump device 7, a first cleaning pipe 701, a second cleaning pipe 703, and a first cleaning interface 702.

[0072] Specifically, there are four reagent cylinders 1, namely a first reagent cylinder 101, a second reagent cylinder 102, a third reagent cylinder 103, and a fourth reagent cylinder 104. Among them, the first reagent cylinder 101 is used to store normal - temperature clear water, the second reagent cylinder 102 is used to store alkaline cleaning reagents, the third reagent cylinder 103 is used to store acidic cleaning reagents, and the fourth reagent cylinder 104 is used to store hot water.

[0073] A drain branch pipe 91 is connected to the bottom of the reagent cylinder 1. The lower end of the drain branch pipe 91 is connected to the drain pipe 9, and a drain valve 911 is also installed on the drain branch pipe 91. When the reagent cylinder 1 needs to be emptied and cleaned, the drain valve 911 can be opened to discharge the reagent in the reagent cylinder 1 into the drain pipe 9, realizing the discharge of waste water.

[0074] The first cleaning pipe 701 and the second cleaning pipe 703 are respectively connected to both ends of the first pump device 7. The first pump device 7 is a two-way pump and can realize the switching of the pumping direction. The first pump device 7 can pump from the first cleaning pipe 701 to the second cleaning pipe 703, or pump from the second cleaning pipe 703 to the first cleaning pipe 701. Specifically, the first pump device 7 can adopt a single pump body. For example, a two-way centrifugal pump or a two-way impeller pump, etc.; two one-way pumps can also be reversely connected in parallel to form the structure of a two-way pumping station, which can also realize two-way pumping.

[0075] Refer to Figure 1 、 Figure 2 As shown, each reagent cylinder 1 is connected with a reagent branch pipe 8. Each reagent cylinder 1 is respectively connected to the second cleaning pipe 703 through the reagent branch pipe 8, and a branch valve 801 is installed in the middle section of the reagent branch pipe 8. The corresponding branch valve 801 can be controlled to open according to the usage situation, so as to realize the connection between the corresponding cylinder body and the branch valve 801. The reagent branch pipe 8 has a branch upper end 802 and a branch lower end 803. The branch upper end 802 is connected upward to the bottom of the reagent cylinder 1, and the branch lower end 803 is connected downward to the second cleaning pipe 703.

[0076] A first cleaning interface 702 is installed at one end of the first cleaning pipe 701 away from the first pump device 7. The first cleaning interface 702 can be connected to the device to be cleaned. Specifically, the first cleaning interface 702 can be connected to the second cleaning interface 204 in the fresh milk instant heat sterilization system, so that the fresh milk instant heat sterilization system and the cleaning system can be connected, and the cleaning reagent can circulate.

[0077] When it is necessary to use the reagent in the corresponding reagent cylinder 1, the corresponding branch valve 801 at the lower part of the reagent cylinder 1 can be opened, and the second cleaning pipe 703 can be connected through the reagent branch pipe 8; by starting the first pump device 7, it can pump from the second cleaning pipe 703 towards the first cleaning interface 702, and the corresponding reagent can be pumped into the fresh milk instant heat sterilization system to clean the milk pipeline in the fresh milk instant heat sterilization system.

[0078] During the cleaning process, the cleaning step a is first adopted for cleaning to clean the pipeline in the fresh milk instant heat sterilization system.

[0079] The cleaning step a is to clean the pipelines in the fresh milk instant sterilization system with clean water, alkaline cleaning reagents and acidic cleaning reagents. For example, first clean with clean water, then clean with alkaline cleaning reagents, then clean with acidic cleaning reagents, then clean with alkaline cleaning reagents again, and finally clean with clean water. Through the mutual cooperation of alkaline cleaning reagents and acidic cleaning reagents, the pipelines in the fresh milk instant sterilization system can be cleaned, and automatic cleaning can be achieved. Or, the cleaning steps of cleaning step a can also be specifically set according to specific cleaning requirements, as long as the equipment can be cleaned.

[0080] Since between the reagent cylinder 1 and the second cleaning pipe 703, they are connected through the reagent branch pipeline 8, and each reagent branch pipeline 8 forms multiple branches on the second cleaning pipe 703. At the connection of the reagent branch pipeline 8 and the second cleaning pipe 703, that is, in the inner cavity of the lower end 803 of the branch pipe, a part of the reagent will be retained. Moreover, due to the cut-off of the branch valve 801 in the middle section of the reagent branch pipeline 8, the circulation of the water storage space in this section is poor, and it may even remain until the later stage of the cleaning process.

[0081] The cleaning reagent retained in the lower end 803 of the branch pipe of the reagent branch pipeline 8 may slowly disperse into the second cleaning pipe 703, which may contaminate the fresh milk instant sterilization system. For example, at the end of the cleaning process of step b4, when subjected to vibration or external collision, the reagent retained in the lower end 803 of the branch pipe accelerates into the second cleaning pipe 703, and the reagent will be sent into the fresh milk instant sterilization system along with the washing water, which may contaminate the pipelines of the fresh milk.

[0082] After cleaning step a, add cleaning step b. By using cleaning step b for cleaning, the reagent residues in some pipelines of the cleaning system can be cleaned, eliminating the potential pollution hazard of the residual reagents to the fresh milk instant sterilization system. Cleaning step b includes: step b1, step 2 and step b3.

[0083] Step b1 is to close the branch valves 801 at the lower parts of the first reagent cylinder 101 and the fourth reagent cylinder 104 to cut off the corresponding reagent branch pipelines 8; open the branch valves 801 at the lower parts of the second reagent cylinder 102 and the third reagent cylinder 103 to open the corresponding reagent branch pipelines 8; start the first pump device 7 to pump the liquid in the first cleaning pipe 701 towards the second cleaning pipe 703, which can extract the clean water in the equipment to be cleaned and flow back into the second reagent cylinder 102 and the third reagent cylinder 103, and conduct reverse flushing on the reagent branch pipelines 8 at the lower parts of the second reagent cylinder 102 and the third reagent cylinder 103, so as to respectively backflush the possible reagents in the reagent branch pipelines 8 into the second reagent cylinder 102 and the third reagent cylinder 103; then, close the branch valves 801 at the lower parts of the second reagent cylinder 102 and the third reagent cylinder 103 and stop the first pump device 7.

[0084] Through reverse pumping of the first pump device 7, the clear water in the equipment to be cleaned can be reversely pumped into the second reagent cylinder 102 and the third reagent cylinder 103, and the reagent branch pipelines 8 at the lower parts of the second reagent cylinder 102 and the third reagent cylinder 103 can be reversely flushed, and the reagents temporarily stored therein can be cleaned, ensuring that there will be no residual reagents in the reagent branch pipeline 8 during the subsequent cleaning process and no pollution to the equipment to be cleaned in the later stage of cleaning.

[0085] Step b2 is to close the branch pipe valves 801 at the lower parts of the second reagent cylinder 102, the third reagent cylinder 103, and the fourth reagent cylinder 104 to cut off the corresponding reagent branch pipelines 8; open the branch pipe valve 801 at the lower part of the first reagent cylinder 101 to open the corresponding reagent branch pipeline 8; start the first pump device 7 and pump the liquid in the second cleaning pipe 703 towards the first cleaning pipe 701, so that the clear water in the first reagent cylinder 101 can flow towards the second cleaning pipe 703, and the reagent branch pipeline 8 at the lower part of the first reagent cylinder 101 can be supplied with water to completely flush and replace the stored water therein.

[0086] Through step b2, it can be ensured that there will be no residual reagents in the reagent branch pipeline 8 at the lower part of the first reagent cylinder 101 and no pollution to the equipment to be cleaned in the later stage of cleaning.

[0087] By combining step b1 and step b2, it can be ensured that the reagent branch pipelines 8 corresponding to the lower parts of the first reagent cylinder 101, the second reagent cylinder 102, and the third reagent cylinder 103 can be reversely flushed and there will be no residual reagent pollution. At this time, only the reagent branch pipeline 8 at the lower part of the fourth reagent cylinder 104 may have residual reagents escaping into it, and the residual reagents at this place will also be completely discharged at the initial stage of the cleaning process in step b4. Furthermore, it can be ensured that after the cleaning is completed, there will be no such situation of reagent residue in the equipment to be cleaned, ensuring the effectiveness of the cleaning.

[0088] Step b4 is to use the hot water in the fourth reagent cylinder 104 to sterilize the pipelines in the fresh milk instant sterilization system to completely eliminate potential pollution hazards in the pipelines.

[0089] Refer to Figure 3 As shown, a cleaning spray head 202 is installed in the milk storage cylinder 2, and the cleaning spray head 202 is connected to the third cleaning pipe 203. The cleaning liquid between the milk storage cylinder 2 and the third cleaning pipe 203 exchanges and circulates through the cleaning spray head 202.

[0090] In step b1, the water level of the clear water in the milk storage cylinder 2 is maintained above the cleaning spray head 202 to submerge the cleaning spray head 202. When the first pump device 7 pumps reversely, it can reversely suck through the cleaning spray head 202, and the clear water in the milk storage cylinder 2 can flow reversely from the cleaning spray head 202 and the third cleaning pipe 203 to the cleaning system, thereby realizing the reverse pumping and circulation of the clear water.

[0091] Further, in order to enable the clear water to flow reversely into the cleaning system, the pipeline connecting the reagent cylinder 1 and the third cleaning pipe 203 can be further designed. Specifically, refer to Figure 4 as shown.

[0092] Refer to Figure 4 As shown, the milk storage cylinder 2 and the second pump device 3 are connected by a first connecting pipe 301, and a first valve device 302 is installed on the first connecting pipe 301. A second valve device 205 is installed on the third cleaning pipe 203. Both the first valve device 302 and the second valve device 205 are three-way valves and both have three connecting interfaces. Two of the interfaces are main connecting interfaces, which can connect the first valve device 302 and the second valve device 205 into the corresponding pipelines respectively. In addition, the first valve device 302 and the second valve device 205 also have a first branch interface 303 and a second branch interface 206 respectively as the third connecting interface. A second connecting pipe 304 is connected between the first branch interface 303 and the second branch interface 206.

[0093] When the cleaning liquid flows from the third cleaning pipe 203 towards the reagent cylinder 1, that is, during forward flushing, the first branch interface 303 and the second branch interface 206 are closed, and the two main connecting interfaces of the first valve device 302 and the second valve device 205 are opened, enabling the flow of the cleaning liquid.

[0094] When the cleaning liquid flows from the reagent cylinder 1 towards the third cleaning pipe 203, that is, during reverse flushing, the main connecting interface on the lower side of the first valve device 302 is closed, the main connecting interface on the upper side of the first valve device 302 is opened, and the first branch interface 303 of the first valve device 302 is opened; the main connecting interface on the lower side of the second valve device 205 is closed, the main connecting interface on the upper side of the second valve device 205 is opened, and the second branch interface 206 of the second valve device 205 is opened, so that the clear water in the milk storage cylinder 2 can flow through the first valve device 302, the second connecting pipe 304, the second valve device 205, and the third cleaning pipe 203 in sequence and flow reversely into the cleaning system, and the reverse flow of the clear water can also be realized.

[0095] By adopting the second connecting pipe 304, a separate reverse flow path can be formed outside the milk storage cylinder 2, so that the clear water can flow reversely. During the reverse flow process, it is not necessary for the water level in the milk storage cylinder 2 to submerge the cleaning nozzle 202.

[0096] During the process of step b1, the reagent is reversely flushed from the second cleaning pipe 703 and the reagent branch pipeline 8 into the second reagent cylinder 102 and the third reagent cylinder 103. The reagent in the pipeline will enter the corresponding reagent cylinder 1, which will cause dilution of the reagent in the reagent cylinder 1 and affect the subsequent cleaning effect. The structure of the reagent cylinder 1 is further designed to avoid the problem that the cleaning liquid during reverse flushing dilutes and contaminates the reagent in the reagent cylinder 1.

[0097] Reference Figure 5 、 Figure 6 、 Figure 7 As shown, in this embodiment, a reagent cartridge 1 is also disclosed, which includes a barrel 11, a connecting barrel 12 and a piston member 13. The connecting barrel 12 is fixedly connected to the bottom of the reagent cartridge 1 and is kept sealed at the connection. The upper end of the connecting barrel 12 communicates with the barrel 11, and the upper part of the connecting barrel 12 can extend into the upper part of the bottom. The lower end of the connecting barrel 12 extends out to the lower part of the bottom, and the lower end of the connecting barrel 12 is communicated with the reagent branch pipeline 8.

[0098] The connecting barrel 12 has a structure extending vertically up and down, and its axis is generally vertically up and down. The piston member 13 is piston-connected in the connecting barrel 12 and can seal and separate the upper and lower ends of the connecting barrel 12. The outer periphery of the piston member 13 and the inner peripheral wall of the connecting barrel 12 are mutually sealed, and a vertically sliding sealing structure can be realized.

[0099] A through hole 133 penetrating up and down is provided in the piston member 13, and the piston member 13 is provided with a one-way conduction member 134 for controlling the one-way conduction of the through hole 133 from top to bottom.

[0100] When the first pump device 7 pumps forward, the reagent in the barrel 11 passes through the connecting barrel 12 and flows from top to bottom in the connecting barrel 12. The one-way conduction member 134 opens the through hole 133, so that the reagent in the barrel 11 can be discharged outward; when the first pump device 7 pumps backward, the reagent is input from the second cleaning pipe 703 and the reagent branch pipeline 8 direction and enters the chamber below the piston member 13 from the lower end of the connecting barrel 12. At this time, the one-way conduction member 134 closes the through hole 133, and the reagent flowing back into the reagent cartridge 1 is buffered in the connecting barrel 12, in the chamber below the piston member 13; as the amount of the flowing-back reagent increases, the piston member 13 can flow upward, and expansion can be realized to ensure that there is enough space to accommodate the flowing-back reagent. The flowing-back reagent exists in the connecting barrel 12 and will not be mixed with the reagent in the barrel 11, and thus will not dilute and contaminate the reagent in the barrel 11.

[0101] Reference Figure 6 、 Figure 7 As shown, the one-way conduction member 134 includes a connecting portion 135 and an elastic sealing portion 136. The connecting portion 135 and the elastic sealing portion 136 are integrally connected, and an elastic rubber material can be specifically used. The elastic sealing portion 136 is a circular sheet structure, and the connecting portion 135 is fixed at the middle position of the upper part of the elastic sealing portion 136.

[0102] The elastic sealing portion 136 elastically fits on the lower side surface of the piston member 13, and the connecting portion 135 is connected to the piston member 13, so that the outer peripheral position of the elastic sealing portion 136 can be elastically bent downward. Correspondingly, the position where the through hole 133 of the piston member 13 is opened corresponds to the outer peripheral position of the elastic sealing portion 136.

[0103] In the natural state, the elastic sealing portion 136 can elastically fit the through hole 133 of the piston member 13 and hermetically cover the through hole 133. When pressure is applied to the lower side of the piston member 13, that is, during the reverse flow process, the elastic sealing portion 136 is pressed upward and tightly attached to the piston member 13, and can maintain the sealing of the through hole 133, thereby realizing one-way closing from bottom to top; when pressure is applied to the upper side of the piston member 13, that is, during the forward flow process, the elastic sealing portion 136 is pressed downward, and the elastic sealing portion 136 will elastically bend downward to open the through hole 133, thereby realizing one-way conduction from top to bottom.

[0104] In addition, in order to limit the up and down sliding of the piston member 13, a first limiting retaining ring 121 can be provided on the inner circumference of the upper end of the connecting cylinder 12 to play a blocking role and prevent the piston member 13 from detaching.

[0105] Further, referring to Figure 12 As shown, a pressure relief port 122 can be opened on the outer side of the lower part of the connecting cylinder 12. The pressure relief port 122 is connected to a pressure relief pipe 123. A pressure relief valve 124 is installed on the pressure relief pipe 123. The pressure relief water pipe 125 of the pressure relief valve 124 is connected to the drain pipe 9.

[0106] When an excessive amount of water rushes back into the inside of the connecting cylinder 12, the pressure inside the connecting cylinder 12 is too high. The water pressure will push the pressure relief valve 124 to open, release the pressure inside the connecting cylinder 12, and discharge the excessive backwashing water, thereby being able to prevent the equipment from being damaged due to excessive pressure.

[0107] In addition, referring to Figure 7 As shown, a spring 16 can be elastically pressed against the upper side of the piston member 13. The spring 16 can apply a downward elastic pressure to the piston member 13, so that the piston member 13 can elastically reset downward under the combined action of its own weight and the elastic force. Specifically, the upper and lower ends of the spring 16 can be pressed between the first limiting retaining ring 121 and the piston member 13 to form an elastic pressing structure.

[0108] Another reagent cylinder 1 is also disclosed in this embodiment. On the basis of the above embodiment, referring to Figures 8-11 As shown, it will be further described in detail.

[0109] In this embodiment, the side wall of the cylinder body 11 is a double-layer structure, including an outer cylinder layer 14 and an inner cylinder layer 15. The outer cylinder layer 14 is fixedly connected to the bottom of the cylinder body 11. The inner cylinder layer 15 is slidably connected up and down inside the outer cylinder layer 14, and the outer circumference of the inner cylinder layer 15 is hermetically and slidably connected to the inner circumference of the outer cylinder layer 14. The upward sliding of the inner cylinder layer 15 is limited by the first limiting retaining ring 121 on the inner circumference of the upper end of the outer cylinder layer 14.

[0110] The upper and lower ends of the inner cylinder layer 15 are through, and limiting retaining rings II 152 are arranged on the inner circumferences of the upper and lower ends. The piston member 13 is installed inside the inner cylinder layer 15. The outer circumference of the piston member 13 and the inner circumference of the inner cylinder layer 15 form a piston connection structure, enabling up and down sliding connection. The movement of the piston member 13 inside the inner cylinder layer 15 is limited up and down by the limiting retaining rings II 152. The structure of the piston member 13 is the same as that in the above embodiment and can also achieve one-way conduction.

[0111] A water passing hole I 141 communicating with the bottom of the connecting cylinder 11 is opened on the side wall of the outer cylinder layer 14, and a water passing hole II 151 is opened on the side wall of the inner cylinder layer 15. The inner cylinder layer 15 has a highest position and a lowest position inside the outer cylinder layer 14. The structure at the highest position is referred to Figure 10 as shown, and the structure at the lowest position is referred to Figure 11 as shown. At the highest position, the water passing hole I 141 and the water passing hole II 151 are mutually offset and disconnected. At the lowest position, the water passing hole I 141 and the water passing hole II 151 are mutually aligned and communicated.

[0112] Refer to Figure 10 as shown. During the reflux process into the reagent cylinder 1, the refluxing reagent is input from the lower end of the connecting cylinder 12. Under the action of water pressure, the piston member 13 and the inner cylinder layer 15 are pushed upward. The inner cylinder layer 15 will move to the highest position, and the water passing hole I 141 and the water passing hole II 151 are mutually offset and disconnected. The refluxing water can be cached and accommodated in the connecting cylinder 11.

[0113] Refer to Figure 11 as shown. During the process of outputting the reagent from the reagent cylinder 1, the lower part of the connecting cylinder 12 is subjected to suction, forming a negative pressure. Under the combined action of the water pressure in the reagent cylinder 1, the piston member 13 and the inner cylinder layer 15 will be driven downward. The inner cylinder layer 15 will move to the lowest position, and the water passing hole I 141 and the water passing hole II 151 are mutually aligned and communicated. The reagent in the reagent cylinder 1 can be completely discharged from the reagent cylinder 1, making it easier for the reagent cylinder 1 to discharge water and preventing the situation of water accumulation at the bottom and inability to be output for use.

[0114] In addition, refer to Figure 11 as shown. A spring 16 can be elastically pressed against the upper side of the piston member 13. The spring 16 can apply a downward elastic pressure to the piston member 13, enabling the piston member 13 to elastically reset downward under the combined action of its own weight and the elastic force. Specifically, the upper and lower ends of the spring 16 can be elastically pressed between the upper limiting retaining ring II 152 and the piston member 13 to form an elastic pressing structure.

[0115] Furthermore, in order to form a sealing structure at the connection of the inner and outer peripheral walls of the outer cylinder layer 14 and the inner cylinder layer 15, two first sliding seals 142 can be provided on the inner circumference of the outer cylinder layer 14, and the positions of the two first sliding seals 142 are located on the upper and lower sides of the first water passage hole 141; a second sliding seal 153 is provided on the outer circumference of the inner cylinder layer 15, and the position of the second sliding seal 153 is located on the upper side of the second water passage hole 151, so as to form a stable sliding seal structure between the outer cylinder layer 14 and the inner cylinder layer 15 and maintain a stable up and down sliding movement.

[0116] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A cleaning system, characterized in that: The invention comprises a plurality of reagent cartridges (1), a first pump device (7), a cleaning tube 1 (701), a cleaning tube 2 (703) and a cleaning interface 1 (702). The cleaning tube 1 (701) and the cleaning tube 2 (703) are respectively connected to the two ends of the first pump device (7). The first pump device (7) is a bidirectional pump, which is used for pumping from the cleaning tube 1 (701) to the cleaning tube 2 (703) or from the cleaning tube 2 (703) to the cleaning tube 1 (701). Each reagent cartridge (1) is connected to a reagent branch line (8). Each reagent cartridge (1) is respectively connected to the cleaning tube 2 (703) through the reagent branch line (8), and the reagent branch line (8) is installed with a branch valve (801); a cleaning interface 1 (702) is installed at one end of the cleaning tube 1 (701) away from the first pump device (7), and the cleaning interface 1 (702) is used for connecting to the device to be cleaned; The reagent cartridge (1) comprises a cartridge body (11), a connecting cartridge (12) and a piston member (13); the connecting cartridge (12) is fixedly connected to the bottom of the reagent cartridge (1); the upper end of the connecting cartridge (12) is connected to the cartridge body (11), and the lower end is connected to a reagent branch line (8); The piston member (13) is connected to the connecting tube (12) and can seal and separate the upper and lower ends of the connecting tube (12); the piston member (13) is provided with a through hole (133) which passes through the upper and lower parts, and the piston member (13) is provided with a one-way conducting member (134), and the one-way conducting member (134) is used to control the one-way conducting of the through hole (133) from top to bottom; The outer periphery of the piston member (13) and the inner peripheral wall of the connecting tube (12) are sealed with each other, thereby realizing an up-and-down sliding sealing structure.

2. The cleaning system according to claim 1, characterized in that: The reagent branch pipe (8) comprises a branch pipe upper end (802) and a branch pipe lower end (803); the branch pipe upper end (802) is connected upward to the bottom of the reagent cylinder (1), and the branch pipe lower end (803) is connected downward to the second cleaning pipe (703); the branch pipe valve (801) is located in the middle section of the reagent branch pipe (8).

3. The cleaning system according to claim 1, characterized in that: The one-way conductive member (134) comprises a connecting portion (135) and an elastic sealing portion (136), wherein the connecting portion (135) and the elastic sealing portion (136) are integrally connected, the connecting portion (135) is connected to the piston member (13), the elastic sealing portion (136) is elastically attached to the lower side of the piston member (13) and is used to seal the through hole (133), and the elastic sealing portion (136) can be elastically bent downward to open the through hole (133).

4. The cleaning system according to claim 1, characterized in that: A pressure relief port (122) is provided on the outer side of the lower part of the connecting tube (12), the pressure relief port (122) is connected to a pressure relief pipe (123), and the pressure relief pipe (123) is equipped with a pressure relief valve (124).

5. The cleaning system according to claim 1, characterized in that: The side wall of the cylinder (11) is a double-layer structure, comprising an outer cylinder layer (14) and an inner cylinder layer (15); the outer cylinder layer (14) is fixedly connected to the bottom of the cylinder (11); the inner cylinder layer (15) is slidably connected up and down inside the outer cylinder layer (14); the outer periphery of the inner cylinder layer (15) is sealingly slidably connected to the inner periphery of the outer cylinder layer (14); the piston member (13) is installed in the inner cylinder layer (15); the upper and lower ends of the inner cylinder layer (15) are connected, and a second limit stop ring (152) is provided on the inner periphery of the upper and lower ends.

6. The cleaning system according to claim 5, characterized in that: The side wall of the outer cylindrical layer (14) is provided with a water through hole (141) connected to the bottom of the cylindrical body (11), and the side wall of the inner cylindrical layer (15) is provided with a water through hole (151). The inner cylindrical layer (15) has a highest position and a lowest position in the outer cylindrical layer (14). At the highest position, the water through hole (141) and the water through hole (151) are mutually offset and disconnected; at the lowest position, the water through hole (141) and the water through hole (151) are mutually aligned and connected.

7. A fresh milk instant sterilization self-cleaning machine, characterized in that: It comprises a fresh milk instant sterilization system and a cleaning system as claimed in any one of claims 1 to 6, The fresh milk instant hot sterilization system comprises a milk storage cylinder (2), a second pump device (3), a pasteurization component (4), a milk outlet interface (5) and an interface pipe (502). The milk storage cylinder (2), the second pump device (3), the pasteurization component (4) and the milk outlet interface (5) are connected in sequence through pipelines. The second pump device (3) is used to pump from the milk storage cylinder (2) to the milk outlet interface (5). The interface pipe (502) is detachably mounted on the milk outlet interface (5). A cleaning nozzle (202) is installed in the milk storage barrel (2), and the cleaning nozzle (202) is connected to a cleaning pipe three (203). The cleaning pipe three (203) extends out of the milk storage barrel (2) and is installed with a cleaning interface two (204). The cleaning interface two (204) is used to connect with the cleaning interface one (702); It also includes a water return interface (6), a water return pipe (601) and a second interface pipe (503), wherein the water return interface (6) is connected to the drain pipe (9) via the water return pipe (601), and the second interface pipe (503) can be detachably connected to the milk outlet interface (5) and the water return interface (6).

8. The fresh milk instant hot sterilization self-cleaning integrated machine according to claim 7, characterized in that: The milk storage cylinder (2) and the second pump device (3) are connected via a connecting pipe (301), the connecting pipe (301) is provided with a valve device (302), the cleaning pipe (203) is provided with a valve device (205), the valve device (302) and the valve device (205) are both three-way valves, and respectively have a branch interface (303) and a branch interface (206), the branch interface (303) and the branch interface (206) are connected via a connecting pipe (304), and the branch interface (303) and the branch interface (206) can be switched on and off via the valve device (302) and the valve device (205).

9. A cleaning method, characterized in that: The fresh milk instant hot sterilization self-cleaning integrated machine as claimed in claim 7 is used to clean the fresh milk instant hot sterilization system; in the cleaning system, four reagent cartridges (1) are provided, namely a first reagent cartridge (101) storing clean water at room temperature, a second reagent cartridge (102) storing an alkaline cleaning reagent, a third reagent cartridge (103) storing an acidic cleaning reagent, and a fourth reagent cartridge (104) storing hot water; During the cleaning process, cleaning is first performed using cleaning step a, and then cleaning is performed using cleaning step b. Cleaning step a is to use clean water, alkaline cleaning agents, and acidic cleaning agents to clean the pipelines in the fresh milk instant hot sterilization system; Cleaning step b comprises: Step b1, pumping clean water in the fresh milk instant hot sterilization system into the second reagent cylinder (102) and the third reagent cylinder (103) through the first pump device (7), and reversely flushing the reagent branch pipeline (8) at the lower part of the second reagent cylinder (102) and the third reagent cylinder (103); Step b2, extracting clean water from the first reagent cylinder (101) through the first pump device (7), pumping the water to the fresh milk instant hot sterilization system, and flushing the reagent branch pipeline (8) at the bottom of the first reagent cylinder (101); Step b3, using the hot water in the fourth reagent cartridge (104) to sterilize the pipelines in the fresh milk instant hot sterilization system.

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