Milk cooling system

Abstract

The utility model relates to the technical field of milk products, and provides a milk cooling system which comprises a heat exchanger, a milk inlet, a cooling inlet, a milk outlet, a cooling outlet, a milk inlet pipe, a cooling inlet pipe, two first three-way valves, two second three-way valves, two first three-way valves and two second three-way valves. The two first three-way valves are respectively arranged on the milk inlet and the cooling inlet, the milk inlet pipe is connected with one first three-way valve, the cooling inlet pipe is connected with the other first three-way valve, the second three-way valve is arranged on the first three-way valves, the cleaning pipeline is connected with the second three-way valve, and the drying pipeline is connected with the second three-way valve. By means of the technical scheme, the problems that in the prior art, a milk cooling middle plate type cooler is inconvenient to disinfect, and food hidden dangers are large are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of milk products, in particular to a milk cooling system. Background Art

[0002] Milk is an emulsion mixed with water, protein, fat, carbohydrates, calcium, phosphorus, iron, Vc, B1O and other materials. At present, the cooling equipment of each domestic milk purchasing station is tank-type intermittent jacket cooling, and its volume varies from 3 to 5 cubic meters. Therefore, before the milk is cooled, at least 3 tons of milk need to be collected and put into the tank before the cooling operation begins. The cooling process is that more than 3 tons of milk cool down at the same time. Here, the relatively long waiting time is required for collecting milk and cooling. This "relatively long" time has increased the opportunity for bacterial reproduction. After the temperature rises, the "relatively long" time is particularly obvious for the bacterial reproduction in the milk. Plate coolers can be used for rapid cooling, but the plate coolers are inconvenient to sterilize, and need to be disassembled and cleaned after using for a period of time, causing the problem of large food safety hazards. Utility Model Content

[0003] The utility model provides a milk cooling system, which solves the problem that a plate cooler in milk cooling in the related art is inconvenient to sterilize and has great hidden dangers for food.

[0004] The technical solution of the utility model is as follows:

[0005] Cooling milk system, including

[0006] a heat exchanger having a milk inlet, a cooling inlet, a milk outlet and a cooling outlet,

[0007] a milk inlet pipe, the milk inlet pipe leading to the milk inlet,

[0008] a cooling inlet pipe, the cooling inlet pipe leading to the cooling inlet,

[0009] first three-way valve, there are two first three-way valves, which are respectively arranged on the milk inlet and the cooling inlet, the milk inlet pipe is connected to one of the first three-way valves, and the cooling inlet pipe is connected to the other first three-way valve,

[0010] a second three-way valve, the second three-way valve being arranged on the first three-way valve,

[0011] a cleaning pipeline, wherein the cleaning pipeline is connected to the second three-way valve,

[0012] A drying pipeline is connected to the second three-way valve.

[0013] As a further technical solution, the cleaning pipeline has

[0014] a main pipeline, the main pipeline leading to the first three-way valve,

[0015] a first branch, the first branch leading to the main line, the first branch being used for the inflow of cleaning agent,

[0016] A second branch, the second branch leads to the main line, and the second branch is used for the inflow of sterile water.

[0017] As a further technical solution, one end of the drying pipeline is arranged on the second three-way valve, and the other end has a gas inlet, and further includes

[0018] a sterilization tube, the sterilization tube being connected to the gas inlet,

[0019] Pressure gauges, there are two pressure gauges, which are respectively arranged on one side of the milk outlet and the cooling outlet.

[0020] As a further technical solution, it also includes

[0021] The isolating valve is a plurality of isolating valves, and the isolating valves are respectively arranged at the milk inlet pipe, the cleaning pipeline, the milk outlet and the cooling outlet.

[0022] As a further technical solution, the inner wall of the sterilization tube is provided with a plurality of threaded slots, and further includes

[0023] The ultraviolet sterilization light belt comprises a plurality of ultraviolet sterilization light belts, and the ultraviolet sterilization light belts are respectively arranged in the slot holes of the thread.

[0024] As a further technical solution, there are several heat exchangers which can be switched with each other.

[0025] As a further technical solution, it also includes

[0026] A transition pipeline is plugged into the sterilization tube, and a light belt hole is provided at the connection between the transition pipeline and the sterilization tube, and the light belt hole is used for the end of the ultraviolet sterilization light belt to pass through.

[0027] A sealing member is used for sealing the hole of the light strip.

[0028] As a further technical solution, the ultraviolet germicidal light strip passes through the sealing member.

[0029] The working principle and beneficial effects of the utility model are:

[0030] The utility model designs a heat exchanger, which is a core component and is used for cooling milk. The heat exchanger has a milk inlet, a cooling inlet, a milk outlet and a cooling outlet. The heat exchanger is a plate heat exchanger. The milk inlet pipe connects the milk source with the milk inlet of the heat exchanger to ensure that the milk flows smoothly into the heat exchanger for cooling. The cooling inlet pipe connects the cooling water source with the cooling inlet of the heat exchanger to provide a cooling medium, such as cold water or coolant, to achieve rapid cooling of the milk. Two first three-way valves are provided, which are respectively located at the milk inlet and the cooling inlet. The milk inlet pipe is connected to one of the first three-way valves, and the cooling inlet pipe is connected to the other first three-way valve. The second three-way valve is arranged on the first three-way valve to control the fluid guide in the cleaning and drying stages to achieve automatic cleaning and drying inside the system. The cleaning pipeline is connected to the second three-way valve to introduce cleaning liquid or hot water to regularly clean the inside of the heat exchanger to ensure the hygiene of the system. The drying pipeline is connected to the second three-way valve to introduce dry air or inert gas to complete the drying step after cleaning, prevent bacteria from growing, and keep the system dry. Milk enters the milk inlet of the heat exchanger through the milk inlet pipe, and the cooling medium enters the cooling inlet through the cooling inlet pipe. The first three-way valve controls the flow of milk and cooling medium as needed, and efficiently cools the milk through the heat exchanger. The cooled milk flows out from the milk outlet. After the cooling stage, the second three-way valve switches to the cleaning line, introduces cleaning liquid or hot water, cleans the inside of the heat exchanger, removes residual milk and impurities, and ensures the cleanliness of the system. After cleaning, the second three-way valve switches to the drying line, introduces dry air or inert gas, quickly dries the inside of the system, prevents bacterial growth caused by residual moisture, keeps the system dry, and prepares for the next use. By integrating cooling, cleaning and drying functions, not only the efficiency of milk cooling is improved, but also the hygienic standards of the system are ensured, manual intervention is reduced, automatic operation is achieved, production costs are reduced, and food safety is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0032] Figure 1 It is the principle intention of this utility model;

[0033] Figure 2 It is a partial structural schematic diagram of the utility model.

[0034] In the figure: heat exchanger-1, milk inlet-101, cooling inlet-102, milk outlet-103, cooling outlet-104, milk inlet pipe-2, cooling inlet pipe-3, first three-way valve-4, second three-way valve-5, gas inlet-501, cleaning pipeline-6, main pipeline-601, first branch pipeline-602, second branch pipeline-603, drying pipeline-7, sterilization pipeline-8, slot-801, light strip hole-802, pressure gauge-9, isolation valve-10, ultraviolet sterilization light strip-11, transition pipeline-12, seal-13. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0036] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0037] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0038] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0039] Reference Figure 1~Figure 2, is an embodiment of the utility model, and proposes a cooling milk system, including a heat exchanger 1, the heat exchanger 1 has a milk inlet 101, a cooling inlet 102, a milk outlet 103 and a cooling outlet 104, a milk inlet pipe 2 leads to the milk inlet 101, a cooling inlet pipe 3 leads to the cooling inlet 102, there are two first three-way valves 4, which are respectively arranged on the milk inlet 101 and the cooling inlet 102, the milk inlet pipe 2 is connected to one first three-way valve 4, the cooling inlet pipe 3 is connected to another first three-way valve 4, the second three-way valve 5 is arranged on the first three-way valve 4, the cleaning pipeline 6 is connected to the second three-way valve 5, and the drying pipeline 7 is connected to the second three-way valve 5.

[0040] In this embodiment, a heat exchanger 1 is designed. The heat exchanger 1 is a core component for cooling milk, and has a milk inlet 101, a cooling inlet 102, a milk outlet 103 and a cooling outlet 104. The heat exchanger 1 is a plate heat exchanger 1. The milk inlet pipe 2 connects the milk source with the milk inlet 101 of the heat exchanger 1 to ensure that the milk flows smoothly into the heat exchanger 1 for cooling. The cooling inlet pipe 3 connects the cooling water source with the cooling inlet 102 of the heat exchanger 1 to provide a cooling medium, such as cold water or coolant, to achieve rapid cooling of the milk. Two first three-way valves 4 are provided, respectively located at the milk inlet 101 and the cooling inlet 102. The milk inlet pipe 2 is connected to one of the first three-way valves 4, and the cooling inlet pipe 3 is connected to the other first three-way valve 4. The second three-way valve 5 is provided on the first three-way valve 4 to control the fluid guide in the cleaning and drying stages to achieve automatic cleaning and drying inside the system. The cleaning pipeline 6 is connected to the second three-way valve 5 to introduce cleaning liquid or hot water to regularly clean the inside of the heat exchanger 1 to ensure system hygiene. The drying pipeline 7 is connected to the second three-way valve 5, and is used to introduce dry air or inert gas to complete the drying step after cleaning, prevent bacteria from growing, and keep the system dry. Milk enters the milk inlet 101 of the heat exchanger 1 through the milk inlet pipe 2, and the cooling medium enters the cooling inlet 102 through the cooling inlet pipe 3. The first three-way valve 4 controls the flow of milk and cooling medium as needed, and efficiently cools the milk through the heat exchanger 1, and the cooled milk flows out from the milk outlet 103. After the cooling stage is over, the second three-way valve 5 is switched to the cleaning pipeline 6, and cleaning liquid or hot water is introduced to clean the inside of the heat exchanger 1 to remove residual milk and impurities to ensure the cleanliness and hygiene of the system. After cleaning, the second three-way valve 5 is switched to the drying pipeline 7, and dry air or inert gas is introduced to quickly dry the inside of the system to prevent bacterial growth caused by residual moisture, keep the system dry, and prepare for the next use. By integrating cooling, cleaning and drying functions, not only the efficiency of milk cooling is improved, but also the hygienic standards of the system are ensured, manual intervention is reduced, automatic operation is realized, production costs are reduced, and food safety is improved.

[0041] Furthermore, the cleaning pipeline 6 has a main pipeline 601, which leads to the first three-way valve 4, a first branch pipeline 602 leads to the main pipeline 601, the first branch pipeline 602 is used for the inflow of cleaning agent, and a second branch pipeline 603 leads to the main pipeline 601, and the second branch pipeline 603 is used for the inflow of sterile water.

[0042] In this embodiment, the main line 601 is the core part of the cleaning line 6, leading to the first three-way valve 4 in the system, that is, the entrance for introducing cleaning liquid and sterile water, ensuring that the cleaning liquid and sterile water can smoothly enter the system for deep cleaning and flushing. The first branch 602 is specifically used to introduce cleaning agents, such as disinfectants or cleaning solutions. Through the first branch 602, the cleaning agent can be directly transported to the main line 601 and enter the system for efficient cleaning to remove residues and bacteria inside the system. The second branch 603 is used to introduce sterile water. Through the second branch 603, sterile water can enter the main line 601 for flushing cleaning agents to ensure that there are no residual chemicals inside the system. It can also be used for daily cleaning and maintenance to keep the system hygienic. During the cleaning stage, the system introduces cleaning agents through the first branch 602, enters the interior of the heat exchanger 1 through the main line 601, and performs deep cleaning on the system. After cleaning is completed, sterile water is introduced through the second branch 603 to rinse away the residual cleaning agent to ensure that the system is clean and harmless. Finally, through the drying stage, dry air or inert gas is introduced to complete the drying of the system and prepare for the next use. Through the dedicated cleaning agent and sterile water branch, the system can more effectively remove residues and bacteria, improve cleaning efficiency and cleanliness. Automated operation: The optimized cleaning pipeline 6 design supports automated cleaning procedures, reduces manual operations, improves production efficiency, and reduces labor costs. The strict cleaning and drying process ensures that there is no bacterial growth inside the system, improves the food safety standards of milk, and meets strict hygiene regulations.

[0043] Furthermore, one end of the drying pipeline 7 is arranged on the second three-way valve 5, and the other end has a gas inlet 501, and also includes a sterilization pipe 8, which is connected to the gas inlet 501. There are two pressure gauges 9, which are respectively arranged on one side of the milk outlet 103 and the cooling outlet 104.

[0044] In this embodiment, the sterilization pipe 8 is connected to the gas inlet 501 of the drying pipeline 7 for introducing sterilized dry gas. The sterilization pipe 8 can be equipped with an efficient filter or sterilization device to ensure that the dry gas does not contain bacteria and impurities, providing a safe drying environment for the system. Two pressure gauges 9 are provided, located on one side of the milk outlet 103 and the cooling outlet 104, respectively, for real-time monitoring of the pressure changes inside the system. By monitoring the air pressure, abnormal conditions in the system, such as blockage or leakage, can be discovered in time to ensure the stability and safety of the system operation. In the drying stage, the sterilized dry gas enters the drying pipeline 7 through the sterilization pipe 8 and enters the system from the second three-way valve 5 to thoroughly dry the inside of the heat exchanger 1 to avoid bacterial growth caused by excessive humidity. At the same time, the pressure gauge 9 monitors the pressure changes inside the system in real time to ensure that the air pressure is stable during the drying process. Once an abnormality is found, the system can take immediate measures to prevent safety accidents. By integrating the sterilization function, the purity of the dry gas is ensured, the system is prevented from being contaminated, and the food safety standard of milk is improved. The real-time monitoring function of the pressure gauge 9 can timely warn of system abnormalities, improve the safety and stability of the system, and reduce maintenance costs. The introduction of dry gas ensures the dryness inside the system, avoids the growth of bacteria, extends the service life of the system, and improves production efficiency.

[0045] Furthermore, it also includes a plurality of isolation valves 10 , which are respectively arranged at the milk inlet pipe 2 , the cleaning pipeline 6 , the milk outlet 103 and the cooling outlet 104 .

[0046] In this embodiment, a plurality of isolation valves 10 are provided, which are respectively located at the milk inlet pipe 2, the cleaning pipeline 6, the milk outlet 103 and the cooling outlet 104. Each isolation valve 10 can independently control the opening and closing of the corresponding pipeline, so as to realize the intelligent isolation and control of each part of the system. In the cooling stage, milk and cooling medium are introduced through the milk inlet pipe 2 and the cooling inlet pipe 3, and the isolation valve 10 controls the opening of these two pipelines to ensure that milk and cooling medium can smoothly enter the heat exchanger 1 for efficient cooling. Milk flows out through the milk outlet 103, and the isolation valve 10 at the milk outlet 103 is opened at this time to ensure the smooth output of milk. In the cleaning stage, detergent or cleaning water is introduced through the cleaning pipeline 6, and the isolation valve 10 of the cleaning pipeline 6 is opened to ensure that the cleaning liquid can enter the system for deep cleaning. After cleaning, the isolation valve 10 of the cleaning pipeline 6 is closed to prevent leakage of the cleaning liquid. In the drying stage, the isolation valve 10 of the drying pipeline 7 is opened, and dry gas is introduced to dry the inside of the system to ensure that the system is dry and sterile, thereby improving food safety. The introduction of the isolation valve 10 enables the system to achieve precise control of each part, improves the flexibility and controllability of the system, and meets different production needs. During system maintenance or cleaning, by closing the corresponding isolation valve 10, the various parts of the system can be effectively isolated, cross contamination can be avoided, and production safety can be improved. When performing equipment maintenance, gas is introduced into the isolation valve 10, and all isolation valves 10 are closed. The pressure gauge 9 can be used to test the sealing of the inside of the heat exchanger 1, avoiding contamination of the heat exchange device when the heat exchanger 1 is disassembled.

[0047] Furthermore, the inner wall of the sterilization tube 8 is provided with a plurality of thread-shaped slots 801 , and also includes an ultraviolet sterilization light strip 11 . There are a plurality of ultraviolet sterilization light strips 11 , which are respectively arranged in the thread-shaped slots 801 .

[0048] In this embodiment, a plurality of threaded slots 801 are provided on the inner wall of the sterilization tube 8. These slots 801 are used to fix the ultraviolet sterilization light strip 11, ensuring that the light strip can be firmly installed inside the sterilization tube 8. At the same time, the threaded design helps to increase the contact area between the light strip and the gas, thereby improving the sterilization efficiency. A plurality of ultraviolet sterilization light strips 11 are provided, each of which is embedded in the threaded slots 801. The ultraviolet sterilization light strip 11 can emit ultraviolet rays of a specific wavelength to efficiently sterilize the dry gas passing through the sterilization tube 8, thereby ensuring that the gas entering the system is pure and sterile. In the drying stage, the dry gas first passes through the irradiation area of ​​the ultraviolet sterilization light strip 11 before entering the system through the sterilization tube 8. The ultraviolet rays emitted by the ultraviolet light strip can destroy the DNA structure of microorganisms such as bacteria and viruses in the gas, thereby achieving efficient sterilization. Since the ultraviolet light strip is embedded in the threaded slots 801, it can ensure that the gas is fully in contact with the ultraviolet rays, thereby improving the sterilization effect. The introduction of the ultraviolet sterilization light strip 11 can deeply sterilize the dry gas, ensure that the internal environment of the system is sterile, and improve the food safety standard of milk. Ultraviolet disinfection technology is efficient and fast, and can kill bacteria quickly. At the same time, it has low power consumption, which is conducive to energy conservation and emission reduction, and reduces production costs. The embedded design of the ultraviolet light strip reduces external exposed parts, reduces maintenance difficulty, and extends the service life of the system.

[0049] Furthermore, there are several heat exchangers 1 and they can be switched with each other.

[0050] In this embodiment, the milk cooling system includes several heat exchangers 1, which can be connected in parallel or in series. Each heat exchanger 1 is responsible for a part of the cooling task, so as to realize the graded processing of the milk cooling process. The system is equipped with an intelligent control unit, which can automatically switch the activation and shutdown of different heat exchangers 1 according to production requirements, the operating status of the heat exchanger 1 and the cooling effect, so as to ensure the continuity and efficiency of the cooling process. In the milk cooling process, the system first activates the first heat exchanger 1 for preliminary cooling. When the preset cooling efficiency is reached or the heat exchanger 1 needs maintenance, the intelligent control unit will automatically switch to the next heat exchanger 1 to continue the cooling task, while the previous heat exchanger 1 can be maintained or cleaned, without affecting the continuous operation of the entire cooling system. This multi-stage switching design ensures the continuity and efficiency of the milk cooling process, while reducing the impact of maintenance on production. The multi-stage heat exchanger 1 switching design ensures the continuity of the cooling process. Even if a heat exchanger 1 needs maintenance, it will not interrupt the entire production process, thereby improving production efficiency. Through graded cooling, more precise temperature control can be achieved, cooling efficiency can be improved, and milk quality can be ensured. The intelligent switching mechanism makes the maintenance of the heat exchanger 1 more flexible and can be carried out without affecting production, thereby reducing maintenance costs and downtime and avoiding milk spoilage or other food safety impacts caused by equipment maintenance.

[0051] Furthermore, it also includes a transition pipeline 12, which is plugged into the sterilization tube 8. A light belt hole 802 is provided at the connection between the transition pipeline 12 and the sterilization tube 8. The light belt hole 802 is used for the end of the ultraviolet sterilization light belt 11 to pass through, and the seal 13 is used to seal the light belt hole 802.

[0052] In this embodiment, a transition pipeline 12 is designed, and the transition pipeline is designed to be plugged into the sterilization tube 8 for connecting the sterilization tube 8. The connection between the transition pipeline 12 and the sterilization tube 8 is provided with a light belt hole 802, which is used for the end of the ultraviolet sterilization light belt 11 to pass through, ensuring that the light belt can be stably connected between the sterilization tube 8 and the transition pipeline 12. The seal 13 is used to seal the light belt hole 802 to ensure the air tightness of the connection between the sterilization tube 8 and the transition pipeline 12, and prevent the outside air or microorganisms from invading the system and affecting the hygiene and safety of the milk cooling process. Working principle When the system is running, the dry gas first passes through the sterilization tube 8, is sterilized under the action of the ultraviolet sterilization light belt 11, and then enters the main circuit of the system through the transition pipeline 12 to participate in the cooling process of the milk. The connection between the transition pipeline 12 and the sterilization tube 8 is tightly sealed by the seal 13 to ensure the purity and safety of the internal environment of the system. The use of the seal 13 enhances the sealing of the connection between the sterilization tube 8 and the transition pipeline 12, effectively preventing the intrusion of external pollutants and improving the hygiene standards of the system. The plug-in design of the transition pipeline 12 and the sterilization tube 8 ensures the stable connection of the ultraviolet sterilization light belt 11, avoids the risk of loosening or falling off of the ultraviolet sterilization light belt 11, and improves the operating safety of the system. The plug-in method of the transition pipeline 12 and the sterilization tube 8 makes system maintenance more convenient, and the sterilization tube 8 can be easily disassembled for cleaning or replacement of the ultraviolet sterilization light belt 11, reducing the difficulty and cost of maintenance.

[0053] Furthermore, the ultraviolet sterilization lamp belt 11 passes through the sealing member 13 .

[0054] In this embodiment, the ultraviolet sterilization light belt 11 penetrates the seal 13. The ultraviolet sterilization light belt 11 not only connects the transition pipeline 12 and the sterilization tube 8, but also penetrates the seal 13 at both ends thereof, ensuring the tight connection between the light belt and other parts of the system, while ensuring the air tightness and sealing of the connection parts. When the system is running, the ultraviolet sterilization light belt 11 stably connects the transition pipeline 12 and the sterilization tube 8 while penetrating the seal 13, and efficiently sterilizes the dry gas passing through the sterilization tube 8. At the same time, the seal 13 ensures the air tightness of the connection part, preventing the outside air or microorganisms from invading the system and affecting the hygiene and safety of the milk cooling process. The design of the ultraviolet sterilization light belt 11 penetrating the seal 13 ensures the stable connection and efficient operation of the light belt, improves the sterilization effect, and ensures the purity and safety of the internal environment of the system. The use of the seal 13 enhances the sealing of the connection part, effectively prevents the invasion of external pollutants, and improves the hygiene standards and operational safety of the system. The combined design of the ultraviolet germicidal lamp belt 11 and the seal 13 makes system maintenance more convenient, and the seal 13 can be easily removed for cleaning or replacement of the ultraviolet germicidal lamp belt 11, reducing the difficulty and cost of maintenance.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A milk cooling system, characterized in that: include A heat exchanger (1), wherein the heat exchanger (1) has a milk inlet (101), a cooling inlet (102), a milk outlet (103) and a cooling outlet (104), a milk inlet pipe (2), the milk inlet pipe (2) leading to the milk inlet (101), a cooling inlet pipe (3), the cooling inlet pipe (3) leading to the cooling inlet (102), a first three-way valve (4); two first three-way valves (4) are provided respectively on the milk inlet (101) and the cooling inlet (102); the milk inlet pipe (2) is connected to one of the first three-way valves (4); the cooling inlet pipe (3) is connected to the other of the first three-way valves (4); a second three-way valve (5), wherein the second three-way valve (5) is arranged on the first three-way valve (4), a cleaning pipeline (6), wherein the cleaning pipeline (6) is connected to the second three-way valve (5), A drying pipeline (7), wherein the drying pipeline (7) is connected to the second three-way valve (5).

2. The milk cooling system according to claim 1, characterized in that The cleaning pipeline (6) has a main pipeline (601), the main pipeline (601) leading to the first three-way valve (4), A first branch (602), the first branch (602) leads to the main line (601), and the first branch (602) is used for the inflow of cleaning agent, A second branch line (603), the second branch line (603) leads to the main line (601), and the second branch line (603) is used for the inflow of sterile water.

3. The milk cooling system according to claim 1, characterized in that One end of the drying pipeline (7) is arranged on the second three-way valve (5), and the other end has a gas inlet (501), and further includes a sterilization tube (8), wherein the sterilization tube (8) is connected to the gas inlet (501), A pressure gauge (9), wherein two pressure gauges (9) are provided, respectively disposed on one side of the milk outlet (103) and the cooling outlet (104).

4. The cooling milk system according to claim 1, characterized in that Also includes A cut-off valve (10), wherein the cut-off valve (10) is in a plurality and the cut-off valves (10) are respectively arranged at the milk inlet pipe (2), the cleaning pipeline (6), the milk outlet (103) and the cooling outlet (104).

5. The milk cooling system according to claim 3, characterized in that The inner wall of the sterilization tube (8) is provided with a plurality of threaded slots (801), and further includes An ultraviolet sterilization light strip (11), wherein the ultraviolet sterilization light strip (11) comprises a plurality of strips, each of which is arranged in the threaded slot (801).

6. The cooling milk system according to claim 1, characterized in that There are multiple heat exchangers (1) which can be switched with each other.

7. The cooling milk system according to claim 5, characterized in that Also includes A transition pipeline (12), the transition pipeline (12) being plugged into the sterilization tube (8), a light belt hole (802) being provided at the connection between the transition pipeline (12) and the sterilization tube (8), the light belt hole (802) being used for the end of the ultraviolet sterilization light belt (11) to pass through, A sealing member (13), the sealing member (13) being used for sealing the light strip hole (802).

8. The cooling milk system according to claim 7, characterized in that The ultraviolet sterilization lamp strip (11) passes through the sealing component (13).

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