Pasteurization system

Abstract

The utility model relates to the technical field of dairy product processing, and provides a pasteurization system which comprises a preheating assembly, a matching system and pasteurization equipment, the preheating assembly comprises a plurality of heat exchangers, and the heat exchangers are used for preheating raw milk; the number of the selecting and matching systems is multiple, at least one selecting and matching system is arranged between every two adjacent heat exchangers through a switching valve, and the selecting and matching systems are used for conducting functionalization treatment on the preheated raw milk; the pasteurization equipment is used for performing pasteurization treatment on the functionalized raw milk, and the pasteurized raw milk is subjected to heat exchange through at least one heat exchanger of the preheating assembly and then is output; the switching valve is used for controlling the matching system to be connected in series or short-circuited between the two adjacent heat exchangers. According to the pasteurization system disclosed by the utility model, the energy consumption of the system is reduced, the adaptability of equipment to different factory production lines is improved, and the pasteurization system has better flexibility.

Description

TECHNICAL FIELD

[0001] The utility model relates to dairy processing technical field especially, relate to a pasteurization system. BACKGROUND

[0002] Pasteurization is a kind of dairy product processing method by heating to kill harmful microorganisms, while retaining the nutritional ingredients and flavor of dairy products as far as possible. In the pasteurization, raw milk needs to be preheated, cleaned, fat standardized, homogenized and other functional treatment, so that after the functional treatment of raw milk, the ideal flavor, aroma, consistency, sensory, no whey separation and long shelf life high-quality products are produced.

[0003] However, in practical application, it is found that the existing pasteurization system has high energy consumption, and according to the different actual needs, some functional treatment processes of raw milk are not necessary, and the existing pasteurization system cannot flexibly perform functional treatment on raw milk, so that it cannot flexibly adapt to different dairy processing production lines. UTILITY MODEL CONTENT

[0004] The utility model provides a pasteurization system to at least solve or improve the problems of high energy consumption and the inability to flexibly adapt to different dairy processing production lines of the existing pasteurization system.

[0005] The utility model provides a pasteurization system, comprising: a preheating assembly, a matching system and a pasteurization device;

[0006] The preheating assembly comprises a plurality of heat exchangers, and the heat exchanger is used for preheating treatment of raw milk;

[0007] The matching system is provided with a plurality of at least one matching system is arranged between two adjacent heat exchangers in the plurality of heat exchangers through a switching valve, and the matching system is used for functional treatment of preheated raw milk;

[0008] The pasteurization device is used for pasteurization treatment of functional treatment raw milk, and the pasteurized raw milk is output after heat exchange of at least one heat exchanger of the preheating assembly;

[0009] The switching valve is used for controlling the matching system to be connected in series or short-circuited between two adjacent heat exchangers.

[0010] According to the pasteurization system provided by the utility model, the plurality of matching systems at least comprises a separator, a degassing device and a homogenizer;

[0011] The separator, the degassing device, the homogenizer and the pasteurization device are sequentially arranged along the flow direction of raw milk; the separator is used for purifying and fat standardizing the raw milk, the degassing device is used for degassing the raw milk, and the homogenizer is used for homogenizing the raw milk.

[0012] According to the pasteurization system, the plurality of heat exchangers at least include a first heat exchanger, a second heat exchanger, a third heat exchanger and a fourth heat exchanger.

[0013] The primary side of the first heat exchanger, the separator, the primary side of the second heat exchanger, the primary side of the third heat exchanger, the degassing device, the homogenizer, the primary side of the fourth heat exchanger and the pasteurization device are sequentially connected in series.

[0014] The secondary side of the third heat exchanger is configured to be connected with a hot water supply device.

[0015] According to the pasteurization system, the separator includes a separator body, a cream configuration pipeline and a skimmed milk conveying pipeline.

[0016] The separator body includes a centrifugal chamber and a centrifugal separation assembly; the centrifugal chamber is configured with a feed inlet, a cream outlet and a skimmed milk outlet, and at least part of the centrifugal separation assembly is rotatably arranged in the centrifugal chamber.

[0017] The first end of the cream configuration pipeline is in communication with the cream outlet, the second end of the cream configuration pipeline is in communication with the middle part of the skimmed milk conveying pipeline, the first end of the skimmed milk conveying pipeline is in communication with the skimmed milk outlet, and the second end of the skimmed milk conveying pipeline is used for outputting dairy products after fat standardization.

[0018] According to the pasteurization system, the centrifugal separation assembly includes a rotary driving member, a feed pipe and a rotating member.

[0019] The first end of the feed pipe is formed with the feed inlet, the rotary driving member is connected with the first end of the feed pipe to drive the feed pipe to rotate, the second end of the feed pipe extends into the centrifugal chamber, the rotating member is arranged in the centrifugal chamber and connected with the peripheral wall of the feed pipe, and the rotating member includes a plurality of laminated sheet materials, adjacent two layers of the sheet materials are spaced from each other, and each layer of the sheet material is arranged in an inclined manner.

[0020] The rotating member and the peripheral wall of the material conveying pipe form a first flow channel communicated with the cream outlet, and the rotating member and the inner wall of the centrifugal chamber form a second flow channel communicated with the skimmed milk outlet.

[0021] According to the pasteurization system provided by the utility model, the degassing equipment comprises a degassing tank and a vacuum pump;

[0022] The side wall of the degassing tank is provided with a feeding port, the bottom of the degassing tank is provided with a discharging port, and the top of the degassing tank is provided with a vacuumizing port communicated with the vacuum pump.

[0023] The side wall of the degassing tank is provided with a sandwich structure, and cooling water is introduced into the sandwich structure.

[0024] According to the pasteurization system provided by the utility model, the homogenizer comprises a homogenizer body, a first buffer pipe, a second buffer pipe, a bypass valve and a gas supply subsystem.

[0025] The feeding end of the homogenizer body is communicated with the first buffer pipe, and the discharging end of the homogenizer body is communicated with the second buffer pipe, the bypass valve is connected between the first buffer pipe and the second buffer pipe, so as to control the communication state between the first buffer pipe and the second buffer pipe, and the gas supply subsystem is communicated with the first buffer pipe and the second buffer pipe respectively, so as to introduce sterile compressed gas into the first buffer pipe and the second buffer pipe.

[0026] According to the pasteurization system provided by the utility model, the degassing equipment comprises a degassing tank and a vacuum pump;

[0027] According to the pasteurization system provided by the utility model, the degassing equipment comprises a degassing tank and a vacuum pump;

[0028] According to the pasteurization system provided by the utility model, the degassing equipment comprises a degassing tank and a vacuum pump;

[0029] The pasteurization system provided by the utility model, through multiple heat exchangers configured for preheating raw milk, on the one hand, the heat exchange characteristics of the heat exchanger can be utilized, the raw milk to be functionally treated is preheated by the raw milk after pasteurization, the waste heat of the raw milk after pasteurization is recycled, the temperature requirement of the raw milk in each functional treatment link is met, and the system energy consumption is effectively reduced, on the other hand, at least one optional system can be arranged between two adjacent heat exchangers in the multiple heat exchangers through a switching valve, the optional system with application requirement can be selectively connected between the two adjacent heat exchangers according to the production line processing requirement, the optional system without application requirement is removed from the two adjacent heat exchangers, and it is ensured that the pasteurization system can be flexibly adapted to different dairy product processing production lines. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0031] Figure 1 It is the structure schematic view of the pasteurization system provided by the utility model.

[0032] Figure 2 It is the structure schematic view of the separator provided by the utility model.

[0033] Figure 3 It is the structure schematic view of the separator body provided by the utility model.

[0034] Figure 4 It is the structure schematic view of the degassing equipment provided by the utility model.

[0035] Figure 5 It is the structure schematic view of the homogenizer provided by the utility model.

[0036] Figure 6 It is the structure schematic view of the online cleaning equipment provided by the utility model.

[0037] Reference signs:

[0038] 1, balance cylinder;2, preheating assembly;

[0039] 3. Separator; 31. Separator body; 32. Cream preparation pipeline; 33. Skim milk conveying pipeline; 3101. Feed inlet; 3102. Cream outlet; 3103. Skim milk outlet; 3111. First flow channel; 3112. Second flow channel; 3113. Waste discharge channel; 311. Centrifuge chamber; 312. Centrifugal separation assembly; 3121. Rotary drive component; 3122. Conveying pipe; 3123. Rotating component;

[0040] 4. Degassing equipment; 41. Degassing tank; 42. Vacuum pump; 401. Inlet; 402. Outlet; 403. Vacuum port;

[0041] 5. Homogenizer; 51. Homogenizer body; 52. First buffer tube; 53. Second buffer tube; 54. Bypass valve; 55. Air supply subsystem; 551. Booster pump; 552. First filter element; 553. Second filter element; 56. First liquid level detection unit; 57. Second liquid level detection unit;

[0042] 6. Pasteurization equipment; 7. Switching valve assembly; 8. Cooling equipment;

[0043] 9. Online cleaning equipment; 91. Acid addition pipeline; 92. Alkali addition pipeline; 93. Disinfectant addition pipeline; 94. Soft water addition pipeline; 95. Infusion pipeline; 96. Solution preparation tank;

[0044] 10. Buffer tank; 11. Discharge control valve assembly. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0046] The following is combined Figures 1-6 The pasteurization system provided by the utility model embodiments will be described in detail through specific implementation examples and application scenarios.

[0047] In some embodiments, such as Figure 1 As shown, this utility model embodiment provides a pasteurization system, including: a preheating component 2, an optional system, and a pasteurization device 6;

[0048] Preheating component 2 includes multiple heat exchangers used to preheat the raw milk;

[0049] The selection system is provided with multiple, at least one selection system is arranged between two adjacent ones of the multiple heat exchangers through a switching valve, and the selection system is used for functionally treating the raw milk after preheating;

[0050] The pasteurization device 6 is used for pasteurizing the functionally treated raw milk, and the pasteurized raw milk is output after heat exchange through at least one heat exchanger of the preheating assembly 2.

[0051] The switching valve is used for controlling the selection system to be in series connection or short circuit between the two adjacent heat exchangers.

[0052] It can be understood that the heat exchanger can be a shell-and-tube heat exchanger, a plate heat exchanger or a spiral plate heat exchanger, and no specific limitation is made.

[0053] At the same time, two flow channels isolated from each other are formed in the heat exchanger, and the fluids in the two flow channels can realize heat exchange. One of the flow channels is used for passing the raw milk to be preheated, and the other flow channel is used for passing the raw milk after pasteurization.

[0054] The selection system is used for functionally treating the raw milk after preheating, including milk clarification, fat standardization, degassing and homogenization. Each selection system can be configured with a switching valve, one or more selection systems configured with switching valves can be connected in series between two adjacent heat exchangers, and the switching valve is used for controlling the selection system corresponding to the switching valve to be in series connection between the two adjacent heat exchangers.

[0055] Exemplarily, the switching valve is a two-position four-way valve, the first port of the switching valve is in communication with one of the two adjacent heat exchangers, the second port of the switching valve is in communication with the other of the two adjacent heat exchangers, the third port of the switching valve is in communication with the feed end of the selection system, and the fourth port of the switching valve is in communication with the discharge end of the selection system.

[0056] When the switching valve is in the first state, the first port and the second port of the switching valve are in communication, the first port and the third port of the switching valve are blocked, and the second port and the fourth port of the switching valve are blocked. At this time, the switching valve realizes control of the selection system to be in short circuit between the two adjacent heat exchangers, and the selection system cannot functionally treat the raw milk, which is equivalent to the selection system being excluded from the pasteurization system.

[0057] When the switching valve is in the second state, the first port and the third port of the switching valve are in communication, and the second port and the fourth port of the switching valve are in communication. At this time, the switching valve realizes control of the selection system to be in series connection between the two adjacent heat exchangers, and the selection system can functionally treat the raw milk.

[0058] It can be known from the above that the pasteurization system has the following advantages: on the one hand, the heat exchange characteristics of the heat exchangers are utilized, the pasteurized raw milk is used to preheat the raw milk to be functionally processed, the waste heat of the pasteurized raw milk is recycled, the temperature requirements of the raw milk in each functional processing link are met, and the system energy consumption is effectively reduced; on the other hand, at least one optional system is arranged between two adjacent heat exchangers through a switching valve, the optional system with application requirements can be selectively connected between the two adjacent heat exchangers according to the production line processing requirements, the optional system without application requirements is removed from the two adjacent heat exchangers, and the pasteurization system can be flexibly adapted to different dairy product processing production lines.

[0059] In some embodiments, as shown in Figure 1 The plurality of optional systems at least includes a separator 3, a degassing device 4 and a homogenizer 5; the separator 3, the degassing device 4, the homogenizer 5 and the pasteurization device 6 are sequentially arranged along the flow direction of the raw milk; the separator 3 is used for purifying and fat standardizing the raw milk, the degassing device 4 is used for degassing the raw milk, and the homogenizer 5 is used for homogenizing the raw milk.

[0060] Specifically, the plurality of heat exchangers at least includes a first heat exchanger I, a second heat exchanger II, a third heat exchanger III and a fourth heat exchanger IV; a primary side of the first heat exchanger I, the separator 3, a primary side of the second heat exchanger II, a primary side of the third heat exchanger III, the degassing device 4, the homogenizer 5, a primary side of the fourth heat exchanger IV and the pasteurization device 6 are sequentially connected in series; a secondary side of the fourth heat exchanger IV, a secondary side of the second heat exchanger II and a secondary side of the first heat exchanger I are sequentially connected in series, and a secondary side of the third heat exchanger III is configured to be connected with a hot water supply device.

[0061] The primary side of the fourth heat exchanger IV and an input end of the pasteurization device 6 are communicated, an output end of the pasteurization device 6 and the secondary side of the fourth heat exchanger IV are communicated, and the switching valve is arranged between the corresponding input end and the output end of the separator 3, the degassing device 4 and the homogenizer 5.

[0062] In some embodiments, as shown in Figure 1 and Figure 2 The separator 3 includes a separator 3 body, a cream configuration pipeline 32 and a skim milk delivery pipeline 33; the separator 3 body includes a centrifugal chamber 311 and a centrifugal separation assembly 312; the centrifugal chamber 311 is configured with a feeding port 3101, a cream output port 3102 and a skim milk output port 3103, and at least part of the centrifugal separation assembly 312 is rotatably arranged in the centrifugal chamber 311;

[0063] The first end of the cream configuration pipeline 32 is communicated with the cream outlet 3102, the second end of the cream configuration pipeline 32 is communicated with the middle part of the skim milk delivery pipeline 33, the first end of the skim milk delivery pipeline 33 is communicated with the skim milk outlet 3103, and the second end of the skim milk delivery pipeline 33 is used to output the dairy product after the fat standardization treatment.

[0064] It can be understood that the switching valve Q21 is connected in series between the feeding end and the discharging end of the separator 3, the switching valve Q21 is a two-position four-way valve, when the switching valve Q21 is in the first state, the raw milk on the feeding side (for example, the raw milk output from the primary side of the first heat exchanger I) enters the separator 3 body through the switching valve Q21, at this time, the separator 3 body starts to work and centrifugally separates the raw milk, and under the cooperation of the cream configuration pipeline 32 and the skim milk delivery pipeline 33, the dairy product after the fat standardization treatment is obtained, and this part of the dairy product is delivered to other equipment (for example, delivered to the primary side of the second heat exchanger II) through the switching valve Q21.

[0065] Correspondingly, when the switching valve Q21 is in the second state, the switching valve Q21 short-circuits the feeding end and the discharging end of the separator 3, the raw milk on the feeding side will not enter the separator 3 body through the switching valve Q21, but is directly delivered to other equipment through the switching valve Q21.

[0066] Among them, the feeding end of the separator 3 can be considered as the feeding port 3101 of the separator 3 body, and the discharging end of the separator 3 can be considered as the second end of the skim milk delivery pipeline 33.

[0067] For the separator 3 body, the feeding port 3101, the cream outlet 3102 and the skim milk outlet 3103 are respectively communicated with the centrifugal chamber 311, the raw milk can be input into the centrifugal chamber 311 through the feeding port 3101, based on the rotation of the centrifugal separation assembly 312, the raw milk entering the centrifugal chamber 311 can be centrifugally separated, and the purification treatment (impurity removal) of the raw milk is realized, and the raw milk is separated into cream and skim milk, the cream is discharged from the cream outlet 3102, and the skim milk is discharged from the skim milk outlet 3103.

[0068] At the same time, the cream configuration pipeline 32 is used to realize the delivery of the cream and control the delivery flow of the cream, and the skim milk delivery pipeline 33 is used to realize the delivery of the skim milk; since the second end of the cream configuration pipeline 32 is communicated with the middle part of the skim milk delivery pipeline 33, the amount of the cream added into the skim milk delivery pipeline 33 can be controlled based on the cream configuration pipeline 32 according to the actual demand, so as to complete the fat standardization treatment of the raw milk, and the raw milk after the fat standardization treatment can be delivered to the homogenizer 5 for homogenization treatment.

[0069] As Figure 1 andFigure 2 As shown, the separator 3 can also be configured with a buffer tank 10, and the cream configuration pipeline 32 is communicated with the buffer tank 10 through a branch pipeline, the buffer tank 10 is used to store the cream delivered from the cream configuration pipeline 32, and the cream can be used for the processing of dairy products in other production lines.

[0070] In some embodiments, as shown in Figure 3 As shown, the centrifugal separation assembly 312 includes a rotary driving member 3121, a feed pipe 3122, and a rotating member 3123; a first end of the feed pipe 3122 is formed with a feed inlet 3101, the rotary driving member 3121 is connected with the first end of the feed pipe 3122 to drive the feed pipe 3122 to rotate; a second end of the feed pipe 3122 extends into the centrifugal chamber 311; the rotating member 3123 is arranged in the centrifugal chamber 311 and connected with the peripheral wall of the feed pipe 3122; the rotating member 3123 includes a plurality of laminated sheets, adjacent two layers of sheets are spaced apart from each other, and each layer of sheet is arranged obliquely;

[0071] A first flow channel 3111 communicated with the cream outlet 3102 is formed between the rotating member 3123 and the peripheral wall of the feed pipe 3122, a second flow channel 3112 communicated with the skim milk outlet 3103 is formed between the rotating member 3123 and the inner wall of the centrifugal chamber 311, and the centrifugal chamber 311 is configured with a waste discharge channel 3113 communicated with the second flow channel 3112.

[0072] It can be understood that the rotary driving member 3121 includes a driving motor and a gear transmission mechanism, and the output end of the driving motor is drivingly connected with the feed pipe 3122 through the gear transmission mechanism to drive the feed pipe 3122 to drive the rotating member 3123 to rotate in the centrifugal chamber 311.

[0073] Since the corresponding plurality of laminated sheets of the rotating member 3123 are separated from each other and are all arranged obliquely, a flow channel extending obliquely downward is formed between any adjacent two layers of sheets, that is, the first flow channel 3111 is communicated with the second flow channel 3112 through the flow channel.

[0074] When the rotating member 3123 rotates, the rotating member 3123 drives the raw milk to do centrifugal motion in the centrifugal chamber 311 and forces the raw milk to separate into cream and skim milk. Since the weight of the cream is smaller than the weight of the impurities in the skim milk and the raw milk, the cream gradually collects in the first flow channel 3111 and gradually rises along the first flow channel 3111, and then is discharged from the cream outlet 3102. The skim milk and the impurities in the raw milk enter the second flow channel 3112 along the flow channel, the skim milk gradually rises along the second flow channel 3112 until it is discharged from the skim milk outlet 3103, and the impurities in the raw milk enter the waste discharge channel 3113 through the flow passage between the second flow channel 3112 and the waste discharge channel 3113, and then are treated by the treatment equipment in the waste discharge channel 3113.

[0075] As can be seen from the above, the separator 3 shown in the embodiment realizes the integration of the functions of the existing milk clarifier and the fat separator 3, and the design realizes the resource reorganization of two-in-one, which is conducive to reducing the energy consumption of the functional treatment of raw milk and reducing the occupation of the factory space.

[0076] In some embodiments, as shown in Figure 1 and Figure 4 The degassing device 4 includes a degassing tank 41 and a vacuum pump 42; the side wall of the degassing tank 41 is provided with an inlet port 401, the bottom of the degassing tank 41 is provided with an outlet port 402, and the top of the degassing tank 41 is provided with a vacuum port 403, which is communicated with the vacuum pump 42; the side wall of the degassing tank 41 forms a sandwich structure, and the sandwich structure is configured to pass in cooling water.

[0077] It can be understood that the degassing device 4 is connected in series between the inlet end and the outlet end, and the switching valve Q41 is a two-position four-way valve. When the switching valve Q41 is in the first state, the raw milk (for example, the raw milk from the output of the separator 3) on the incoming side enters the degassing tank 41 through the switching valve Q41, at this time the vacuum pump 42 is started to work and performs vacuumizing treatment on the degassing tank 41, which can reduce the boiling point of the raw milk, realize the evaporation of part of the odor, and achieve the purpose of degassing treatment of the raw milk in the degassing tank 41. The degassed raw milk is transported to other devices (for example, to the homogenizer 5) through the switching valve Q41.

[0078] Correspondingly, when the switching valve Q41 is in the second state, the switching valve Q41 short-circuits the inlet end and the outlet end of the degassing device 4, and the raw milk on the incoming side will not enter the degassing tank 41 through the switching valve Q41, but will be directly transported to other devices through the switching valve Q41.

[0079] Among them, the inlet end of the degassing device 4 can be regarded as the inlet port 401 of the degassing tank 41, and the outlet end of the degassing device 4 can be regarded as the outlet port 402 of the degassing tank 41.

[0080] By degassing treatment of the raw milk in the degassing tank 41, the odor in the raw milk can be removed, ensuring that the flavor of the raw milk remains consistent, and degassing treatment of the raw milk can also ensure the homogenization treatment effect of the raw milk when the homogenizer 5 is used subsequently, avoiding equipment failure and equipment operation hidden dangers caused by excessive gas content in the raw milk.

[0081] In actual application, the switching valve Q41 is communicated with the inlet port 401 of the degassing tank 41 through the inlet valve group, the outlet port 402 of the degassing tank 41 is communicated with the switching valve Q41 through the liquid pump PU42, and the vacuum port 403 of the degassing tank 41 is communicated with the vacuum pump 42 through the one-way valve.

[0082] The sandwich structure of the degassing tank 41 is configured with a cooling circuit, which comprises a cold source and a liquid pump PU41 connected in series, the cold source is communicated with the inlet of the sandwich structure through control valves 41 and 42 respectively away from the liquid pump PU41, and the outlet of the sandwich structure is communicated with the end of the liquid pump PU41 away from the cold source. Among them, the control valves 41 and 42 can be configured in parallel or in series, based on the cooling circuit, the cooling water source can be continuously delivered to the sandwich structure, and then based on the heat conduction of the degassing tank 41, the temperature in the degassing tank 41 is maintained at about 70°C when the raw milk is degassed.

[0083] In some embodiments, as shown in Figure 1 and Figure 5 The homogenizer 5 comprises a homogenizer body 51, a first buffer pipe 52, a second buffer pipe 53, a bypass valve 54 and a gas supply subsystem 55.

[0084] The inlet end of the homogenizer body 51 is communicated with the first buffer pipe 52, and the outlet end of the homogenizer body 51 is communicated with the second buffer pipe 53. The bypass valve 54 is connected between the first buffer pipe 52 and the second buffer pipe 53 to control the communication state between the first buffer pipe 52 and the second buffer pipe 53.

[0085] The gas supply subsystem 55 is communicated with the first buffer pipe 52 and the second buffer pipe 53 respectively to introduce sterile compressed gas into the first buffer pipe 52 and the second buffer pipe 53.

[0086] It can be understood that the inlet end and the outlet end of the homogenizer body 51 are connected in series with a switching valve Q51, which is a two-position four-way valve. When the switching valve Q51 is in a first state, the raw milk on the incoming side enters the homogenizer body 51 through the switching valve Q51, and the homogenizer body 51 homogenizes the raw milk. The homogenized raw milk is transported to other equipment through the switching valve Q51; when the switching valve Q51 is in a second state, the switching valve Q51 shorts the inlet end and the outlet end of the homogenizer body 51, so that the raw milk on the incoming side does not enter the homogenizer body 51 through the switching valve Q51, but is directly transported to other equipment through the switching valve Q51.

[0087] The bottom end of the first buffer pipe 52 is communicated with the inlet end of the homogenizer body 51, and the bottom end of the second buffer pipe 53 is communicated with the outlet end of the homogenizer body 51. The top end of the first buffer pipe 52 is communicated with one end of the bypass valve 54, and the other end of the bypass valve 54 is communicated with the top end of the second buffer pipe 53. Among them, the bypass valve 54 can adopt a two-position two-way electromagnetic valve.

[0088] The gas source of the gas supply subsystem 55 can be compressed air, nitrogen or other water-insoluble gas. The gas supply subsystem 55 can filter and pressurize the gas supplied by the gas source to realize the introduction of sterile compressed gas into the first buffer pipe 52 and the second buffer pipe 53 respectively.

[0089] When the dairy product is subjected to homogenization treatment, the bypass valve 54 can be switched to the off state. According to actual needs, the gas supply subsystem 55 can introduce sterile compressed gas into the first buffer pipe 52 and the second buffer pipe 53 respectively, so that a certain back pressure can be maintained in the first buffer pipe 52 and the second buffer pipe 53, thereby the first buffer pipe 52 and the second buffer pipe 53 can maintain the buffering function to ensure the stability of the flow of the dairy product through the homogenizer body 51. When the homogenizer body 51 is cleaned, the bypass valve 54 can be switched to the on state. At this time, part of the cleaning liquid will flow through the homogenizer body 51 to clean the homogenizer body 51, and the other part of the cleaning liquid will flow through the first buffer pipe 52 and the second buffer pipe 53 in turn to clean the first buffer pipe 52 and the second buffer pipe 53. This design overcomes the problem of time-consuming and laborious manual disassembly and cleaning of the buffer pipe of the homogenizer in the prior art, shortens the cleaning waiting time of the system, and is conducive to improving the homogenization treatment efficiency of the dairy product.

[0090] In some embodiments, as shown in Figure 5 The first buffer pipe 52 is provided with a first liquid level detection unit 56 for detecting the liquid level information of the dairy product in the first buffer pipe 52. The second buffer pipe 53 is provided with a second liquid level detection unit 57 for detecting the liquid level information of the dairy product in the second buffer pipe 53.

[0091] The first liquid level detection unit 56 and the second liquid level detection unit 57 are electrically connected to a control module, and the control module is electrically connected to the gas supply subsystem 55. The control module is configured to control the gas supply state of the first buffer pipe 52 and the second buffer pipe 53 by the gas supply subsystem 55 according to the liquid level information fed back by the first liquid level detection unit 56 and the second liquid level detection unit 57.

[0092] It can be understood that the first liquid level detection unit 56 and the second liquid level detection unit 57 can both be liquid level sensors, and the control module can be a single-chip microcomputer or a PLC controller. According to the liquid level information fed back by the first liquid level detection unit 56, the control module can control the gas supply state of the first buffer pipe 52 by the gas supply subsystem 55, for example, the control module controls to increase or decrease the gas supply amount of the first buffer pipe 52 by the gas supply subsystem 55, controls the start or stop of the gas supply subsystem 55, so that the liquid level in the first buffer pipe 52 is maintained within a set threshold range, and the first buffer pipe 52 always maintains the buffering function to maintain the stability of the flow of the dairy product on the feed side of the homogenizer body 51.

[0093] Accordingly, according to the liquid level information fed back by the second liquid level detection unit 57, the control module can also control the air supply state of the second buffer pipe 53 by the air supply subsystem 55, so that the liquid level in the second buffer pipe 53 is maintained within the range of the set threshold value, and the second buffer pipe 53 always maintains the buffering function to maintain the stability of the dairy product flow on the discharge side of the homogenizer body 51.

[0094] In some embodiments, as shown in Figure 5 The first liquid level detection unit 56 includes a first high liquid level detection switch H11 and a first low liquid level detection switch L11, which are arranged in an upper and lower relationship along the height direction of the first buffer pipe 52.

[0095] It can be understood that the first high liquid level detection switch H11 and the first low liquid level detection switch L11 can both be photoelectric detection switches, the liquid level information detected by the first high liquid level detection switch H11 corresponds to the upper limit of the set threshold value, and the liquid level information detected by the first low liquid level detection switch L11 corresponds to the lower limit of the set threshold value.

[0096] When the liquid level in the first buffer pipe 52 is higher than the upper limit of the set threshold value, the control module controls the air supply subsystem 55 to start supplying air to the first buffer pipe 52, and when the liquid level in the first buffer pipe 52 is lower than the lower limit of the set threshold value, the control module controls the air supply subsystem 55 to stop supplying air to the first buffer pipe 52, which can ensure that the liquid level in the first buffer pipe 52 is always maintained within the range of the set threshold value.

[0097] In some embodiments, as shown in Figure 5 The second liquid level detection unit 57 includes a second high liquid level detection switch H21 and a second low liquid level detection switch L21, which are arranged in an upper and lower relationship along the height direction of the second buffer pipe 53.

[0098] It can be understood that the second high liquid level detection switch H21 and the second low liquid level detection switch L21 can both be photoelectric detection switches, the liquid level information detected by the second high liquid level detection switch H21 corresponds to the upper limit of the set threshold value, and the liquid level information detected by the second low liquid level detection switch L21 corresponds to the lower limit of the set threshold value.

[0099] When the liquid level in the second buffer pipe 53 is higher than the upper limit of the set threshold value, the control module controls the air supply subsystem 55 to start supplying air to the second buffer pipe 53, and when the liquid level in the second buffer pipe 53 is lower than the lower limit of the set threshold value, the control module controls the air supply subsystem 55 to stop supplying air to the second buffer pipe 53, which can ensure that the liquid level in the second buffer pipe 53 is always maintained within the range of the set threshold value.

[0100] In some embodiments, the feeding end of the homogenizer body 51 is configured to communicate with the online cleaning device 9, that is, the cleaning liquid supplied by the online cleaning device 9 reaches the feeding end of the homogenizer body 51 through the switching valve Q51, and the control module is electrically connected with the homogenizer body 51, the online cleaning device and the bypass valve 54, respectively.

[0101] It can be understood that, in actual work, the homogenizer body 51 and the online cleaning device can each feed back the working state to the control module, and the control module controls the conduction state of the bypass valve 54 according to the working state fed back by the homogenizer body 51 and the online cleaning device.

[0102] For example, when the homogenizer body 51 is working, the encoder in the homogenizer body 51 for detecting the rotation of the rotor can feed back angle information to the control module, and the control module controls the bypass valve 54 to be in a cut-off state according to the angle information fed back by the encoder, so that the first buffer pipe 52 and the second buffer pipe 53 each independently perform the buffering work.

[0103] When the homogenizer body 51 stops working and the online cleaning device starts working, the control module can know that the online cleaning device performs cleaning on the homogenizer body 51, the first buffer pipe 52 and the second buffer pipe 53 through the output cleaning liquid according to the angle information fed back by the corresponding encoder of the homogenizer body 51 and the flow information fed back by the corresponding flow meter of the online cleaning device, and the control module controls the bypass valve 54 to be in a conduction state at this time, so that the first buffer pipe 52 and the second buffer pipe 53 form a series cleaning circuit through the bypass valve 54.

[0104] In some embodiments, as shown in FIG. 5, the gas supply subsystem 55 includes a booster pump 551, a first air supplement control valve K51 and a second air supplement control valve K52; the gas inlet end of the booster pump 551 is configured to communicate with the gas source device, the gas outlet end of the booster pump 551 communicates with the first buffer pipe 52 through the first air supplement control valve K51, and communicates with the second buffer pipe 53 through the second air supplement control valve K52. Figure 5 It can be understood that the booster pump 551 is used to pressurize the gas provided by the gas source device to ensure that the gas pressure of the sterile compressed gas delivered to the first buffer pipe 52 and the second buffer pipe 53 meets the actual application requirements.

[0105] Among them, the first air supplement control valve K51 and the second air supplement control valve K52 can each be a two-position two-way electromagnetic valve and are configured to be electrically connected with the above-mentioned control module, and the conduction state of the first air supplement control valve K51 and the second air supplement control valve K52 is controlled by the control module.

[0106]

[0107] ​In some embodiments, as shown in Figure 5 The gas supply subsystem 55 further comprises a first filter device 552 and a second filter device 553; the gas inlet end of the booster pump 551 is in communication with the gas source device through the first filter device 552, and the gas outlet end of the booster pump 551 is in communication with the first air supplement control valve K51 and the second air supplement control valve K52 through the second filter device 553, respectively.

[0108] It can be understood that the first filter device 552 and the second filter device 553 can both adopt PP cotton filter cores or activated carbon filter cores, etc. In actual application, the first filter device 552 can be used to filter the gas supplied by the gas source device for the first time, and the filtered gas is delivered to the booster pump 551. After the booster pump 551 boosts the gas filtered, the second filter device 553 filters the boosted gas again, and the filtered gas is delivered to the first buffer pipe 52 through the first air supplement control valve K51 and to the second buffer pipe 53 through the second air supplement control valve K52. The first filter device 552 can be configured with multiple filter cores connected in series or in parallel.

[0109] In some embodiments, the porosity of the filter core of the first filter device 552 is greater than the porosity of the filter core of the second filter device 553. This design can use the first filter device 552 to coarsely filter the gas supplied by the gas source device, so as to deliver the coarsely filtered gas to the booster pump 551, and the second filter device 553 to precisely filter the gas boosted by the booster pump 551, so as to ensure that the actual required sterile compressed gas is delivered to the first buffer pipe 52 and the second buffer pipe 53, respectively.

[0110] In some embodiments, as shown in Figure 5 The gas supply subsystem 55 further comprises a first one-way valve D51 and a second one-way valve D52; the first air supplement control valve K51 is in communication with the first buffer pipe 52 through the first one-way valve D51, and the second air supplement control valve K52 is in communication with the second buffer pipe 53 through the second one-way valve D52.

[0111] It can be understood that the first one-way valve D51 is used to control the sterile compressed gas passing through the first air supplement control valve K51 to flow to the first buffer pipe 52 in one direction, and the second one-way valve D52 is used to control the sterile compressed gas passing through the second air supplement control valve K52 to flow to the second buffer pipe 53 in one direction, so that after the sterile compressed gas is delivered to the first buffer pipe 52 and the second buffer pipe 53, the gas in the first buffer pipe 52 and the second buffer pipe 53 can be prevented from leaking, ensuring that the first buffer pipe 52 and the second buffer pipe 53 maintain a certain back pressure, and thus ensuring that the first buffer pipe 52 and the second buffer pipe 53 always have a buffering function.

[0112] The gas supply subsystem 55 further comprises a third one-way valve D50, the booster pump 551 is communicated with the first air supplement control valve K51 and the second air supplement control valve K52 through the third one-way valve D50, and the third one-way valve D50 is used to control the air output by the booster pump 551 to be directed to the first air supplement control valve K51 and the second air supplement control valve K52.

[0113] In some embodiments, as shown in Figure 5 The gas supply subsystem 55 further comprises a first emptying valve P51 and a second emptying valve P52; the first emptying valve P51 is communicated with the air inlet end of the first one-way valve D51, and the first emptying valve P51 is used to control the emptying state of the pipeline on the air inlet side of the first one-way valve D51; the second emptying valve P52 is communicated with the air inlet end of the second one-way valve D52, and the second emptying valve P52 is used to control the emptying state of the pipeline on the air inlet side of the second one-way valve D52.

[0114] It can be understood that the pipeline on the air inlet side of the first one-way valve D51 can be the pipeline between the booster pump 551 and the first one-way valve D51, or the pipeline between the first air supplement control valve K51 and the first one-way valve D51; the pipeline on the air inlet side of the second one-way valve D52 can be the pipeline between the booster pump 551 and the second one-way valve D52, or the pipeline between the second air supplement control valve K52 and the second one-way valve D52.

[0115] During the process of supplementing air into the first buffer pipe 52 and the second buffer pipe 53, the first emptying valve P51 and the second emptying valve P52 are always in the off state; when it is not necessary to supplement air into the first buffer pipe 52 and the second buffer pipe 53, the first emptying valve P51 can be switched to the on state to empty the air in the pipeline on the air inlet side of the first one-way valve D51, and the second emptying valve P52 can also be switched to the on state to empty the air in the pipeline on the air inlet side of the second one-way valve D52, so as to prevent the pipeline and the related components on the pipeline from being affected by the high-pressure air in the pipeline.

[0116] In some embodiments, as shown in Figure 1 The pasteurization system further comprises a balance cylinder 1 and a switching valve group 7; the feed end of the balance cylinder 1 is configured to receive the input of raw milk, the discharge end of the balance cylinder 1 is communicated with the preheating assembly 2, and the pasteurization device 6 is communicated with at least one heat exchanger of the balance cylinder 1 and the preheating assembly 2 through the switching valve group 7.

[0117] It can be understood that the pasteurization device 6 includes a fifth heat exchanger V and a holding tube, the homogenizer 5, the primary side of the fifth heat exchanger V, the holding tube and the switching valve group 7 are sequentially connected in series, and the secondary side of the fifth heat exchanger V is configured to communicate with the hot water supply device. Among them, the fifth heat exchanger V is used to control the temperature required for raw milk to reach pasteurization (about 63-72°C), and the holding tube is used to maintain the time for pasteurizing raw milk.

[0118] In the pasteurization system, the balance cylinder 1 is used to stabilize the flow of raw milk, eliminate air bubbles in the raw milk and ensure the stability of the sterilization temperature. After the pasteurization device 6 completes the pasteurization process of the raw milk, the pasteurized raw milk can be directly transported to the preheating assembly 2 based on the switching valve group 7, or the pasteurized raw milk can be controlled to be transported to the balance cylinder 1.

[0119] In some examples, as shown in Figure 1 The switching valve group 7 includes a first switching valve J1 and a second switching valve J2, both of which are two-position three-way valves. The first switching valve J1 and the second switching valve J2 are connected in series. The first switching valve J1 is connected to the pasteurization device 6. The second port of the first switching valve J1 and the first port of the second switching valve J2 are connected. The third port of the second switching valve J1 is connected to the balance cylinder 1. The second port of the second switching valve J2 is connected to at least one heat exchanger of the preheating assembly 2. The third port of the second switching valve J2 is connected to the balance cylinder 1.

[0120] In some examples, as shown in Figure 1 The inlet end of the balance cylinder 1 is provided with an inlet valve group W1. The raw milk enters the balance cylinder 1 through the inlet valve group W1. The raw milk in the balance cylinder 1 is sequentially connected to the primary side of the first heat exchanger I of the preheating assembly 2 through the liquid pump PU1 and the filter g1.

[0121] The inlet end and the outlet end of the primary side of the first heat exchanger I can be provided with a switching valve Q1. The switching valve Q1 is used to control the primary side of the first heat exchanger I to be connected in series between the filter g1 and the separator 3, or to control the inlet end and the outlet end of the primary side of the first heat exchanger I to be short-circuited, so that the filter g1 and the separator 3 are directly connected in series.

[0122] At the same time, the inlet end and the outlet end of the primary side of the fourth heat exchanger IV can be provided with a switching valve Q2. The switching valve Q2 is used to control the primary side of the fourth heat exchanger IV to be connected in series between the homogenizer 5 and the pasteurization device 6, or to control the inlet end and the outlet end of the primary side of the fourth heat exchanger IV to be short-circuited, so that the homogenizer 5 and the pasteurization device 6 are directly connected in series. The liquid pump PU2 can be arranged between the primary side of the fourth heat exchanger IV and the pasteurization device 6.

[0123] In addition, the secondary side of the third heat exchanger III can be provided with a circulating heating circuit which communicates with the hot water supply device, and a liquid pump PU3 is arranged on the circulating heating circuit.

[0124] In some embodiments, as shown in Figure 1 and Figure 6 The pasteurization system further comprises an online cleaning device 9 which communicates with the balance cylinder 1 to input cleaning liquid into the balance cylinder 1.

[0125] It can be understood that the online cleaning device 9 comprises an acid liquid adding pipeline 91, an alkali liquid adding pipeline 92, a disinfectant liquid adding pipeline 93, a soft water adding pipeline 94, a liquid delivery pipeline 95, and a liquid preparation tank 96; the acid liquid adding pipeline 91, the alkali liquid adding pipeline 92, the disinfectant liquid adding pipeline 93, the soft water adding pipeline 94, and the liquid delivery pipeline 95 respectively communicate with the liquid preparation tank 96, and the liquid delivery pipeline 95 is used to control the output of the cleaning liquid prepared in the liquid preparation tank 96, and the liquid delivery pipeline 95 is configured to communicate with the balance cylinder 1.

[0126] As shown in Figure 6 the acid liquid adding pipeline 91, the alkali liquid adding pipeline 92, and the disinfectant liquid adding pipeline 93 respectively communicate with the liquid discharge port of the liquid preparation tank 96, the soft water adding pipeline 94 communicates with the spray head in the liquid preparation tank 96, and the liquid delivery pipeline 95 communicates with the liquid discharge port of the liquid preparation tank 96.

[0127] A control valve K91 is arranged on the acid liquid adding pipeline 91 to control the addition state of acid liquid such as nitric acid and hydrochloric acid in the acid liquid adding pipeline 91; a control valve K92 is arranged on the alkali liquid adding pipeline 92 to control the addition state of alkali liquid such as sodium hydroxide and potassium hydroxide in the alkali liquid adding pipeline 92; a control valve K93 is arranged on the disinfectant liquid adding pipeline 93 to control the addition state of disinfectant liquid such as peracetic acid and sodium hypochlorite in the disinfectant liquid adding pipeline 93; a control valve K94 is arranged on the soft water adding pipeline 94 to control the addition state of soft water in the soft water adding pipeline 94; and an emptying valve K96 and a control valve K95 are arranged on the liquid delivery pipeline 95 in sequence, the emptying valve K96 is used to discharge the liquid in the liquid preparation tank 96, and the control valve K95 is used to control the delivery of the cleaning liquid prepared in the liquid preparation tank 96 to the balance cylinder 1 through the liquid delivery pipeline 95.

[0128] Of course, in actual application, the soft water adding pipeline 94 can be directly connected with the balance cylinder 1 to add soft water into the balance cylinder 1 through the soft water adding pipeline 94.

[0129] Since the online cleaning device communicates with the balance cylinder 1, and the balance cylinder 1 communicates with the homogenizer 5, the degassing device 4, the separator 3, and the preheating assembly 2 through the pasteurization device 6, the cleaning liquid supplied by the online cleaning device can be used to perform online cleaning on these devices.

[0130] In some embodiments, as shown in Figure 1 The pasteurization system further comprises a cooling device 8 connected with the pasteurization device 6, and the cooling device 8 is used to cool the pasteurized raw milk outputted by the pasteurization device 6.

[0131] It can be understood that the cooling device 8 comprises a sixth heat exchanger Ⅵ and a cold water supply device, and the pasteurization device 6, the secondary side of the fourth heat exchanger Ⅳ, the secondary side of the second heat exchanger Ⅱ, the secondary side of the first heat exchanger Ⅰ and the primary side of the sixth heat exchanger Ⅵ are connected in series, and the secondary side of the sixth heat exchanger Ⅵ and the cold water supply device form a cold water circulation loop.

[0132] At the same time, the primary side of the sixth heat exchanger Ⅵ is communicated with the discharge control valve group 11 to realize the output of the cooled dairy product based on the discharge control valve group 11, and the discharge control valve group 11 can also be communicated with the balance cylinder 1 through a pipeline, and this design can control a part of the dairy product to flow back to the balance cylinder 1 through the discharge control valve group 11 when the subsequent filling production line fails, so as to avoid the "pressure holding" of the pipeline, thereby ensuring the production safety of the dairy product pipeline.

[0133] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A pasteurization system, characterized in that, Includes: preheating components, optional systems, and pasteurization equipment; The preheating component includes multiple heat exchangers, which are used to preheat the raw milk. The optional system is provided in multiple ways, and at least one of the optional systems is set between two adjacent heat exchangers through a switching valve. The optional system is used to perform functional processing on the preheated raw milk. The pasteurization equipment is used to pasteurize the functionalized raw milk, and the pasteurized raw milk is output after heat exchange through at least one heat exchanger of the preheating component. The switching valve is used to control the optional system to be connected in series or short-circuited between two adjacent heat exchangers.

2. The pasteurization system according to claim 1, characterized in that, The multiple optional systems mentioned above include at least a separator, a degassing device, and a homogenizer; The separator, the degassing device, the homogenizer, and the pasteurization device are arranged sequentially along the flow direction of the raw milk; the separator is used to purify and standardize the fat in the raw milk, the degassing device is used to degas the raw milk, and the homogenizer is used to homogenize the raw milk.

3. The pasteurization system according to claim 2, characterized in that, The plurality of heat exchangers includes at least a first heat exchanger, a second heat exchanger, a third heat exchanger, and a fourth heat exchanger; The primary side of the first heat exchanger, the separator, the primary side of the second heat exchanger, the primary side of the third heat exchanger, the degassing device, the homogenizer, the primary side of the fourth heat exchanger, and the pasteurization device are connected in series. The pasteurization equipment, the secondary side of the fourth heat exchanger, the secondary side of the second heat exchanger, and the secondary side of the first heat exchanger are connected in series, and the secondary side of the third heat exchanger is configured to be connected to the hot water supply equipment.

4. The pasteurization system according to claim 2, characterized in that, The separator includes a separator body, a cream preparation pipeline, and a skim milk delivery pipeline; The separator body includes a centrifuge chamber and a centrifuge separation component; the centrifuge chamber is equipped with a feed inlet, a cream outlet and a skim milk outlet, and at least part of the centrifuge separation component is rotatably disposed within the centrifuge chamber; The first end of the cream preparation pipeline is connected to the cream outlet, the second end of the cream preparation pipeline is connected to the middle of the skim milk delivery pipeline, the first end of the skim milk delivery pipeline is connected to the skim milk outlet, and the second end of the skim milk delivery pipeline is used to output dairy products that have undergone fat standardization treatment.

5. The pasteurization system according to claim 4, characterized in that, The centrifugal separation assembly includes a rotary drive, a feed pipe, and a rotating component; The feed inlet is formed at the first end of the feed pipe, and the rotary drive is connected to the first end of the feed pipe to drive the feed pipe to rotate; the second end of the feed pipe extends into the centrifuge chamber. The rotating component is disposed in the centrifuge chamber and connected to the peripheral wall of the conveying pipe; the rotating component includes multiple stacked sheets, with adjacent layers of sheets spaced apart from each other, and each layer of sheets is inclined. A first flow channel communicating with the cream outlet is formed between the rotating component and the peripheral wall of the conveying pipe, and a second flow channel communicating with the skim milk outlet is formed between the rotating component and the inner wall of the centrifuge chamber, and the centrifuge chamber is equipped with a waste discharge channel communicating with the second flow channel.

6. The pasteurization system according to claim 2, characterized in that, The degassing equipment includes a degassing tank and a vacuum pump; The degassing tank has a feed inlet on its side wall, a discharge outlet at its bottom, and a vacuum port at its top, which is connected to the vacuum pump. The degassing tank has a sandwich structure formed on its side wall, and cooling water is introduced into the sandwich structure.

7. The pasteurization system according to claim 2, characterized in that, The homogenizer includes a homogenizer body, a first buffer tube, a second buffer tube, a bypass valve, and a gas supply subsystem; The feed end of the homogenizer body is connected to the first buffer pipe, and the discharge end of the homogenizer body is connected to the second buffer pipe. The bypass valve is connected between the first buffer pipe and the second buffer pipe to control the connection state between the first buffer pipe and the second buffer pipe. The gas supply subsystem is connected to the first buffer tube and the second buffer tube respectively to introduce sterile compressed gas into the first buffer tube and the second buffer tube.

8. The pasteurization system according to any one of claims 1 to 7, characterized in that, Also includes: Balance cylinder and switching valve assembly; The feed end of the balance cylinder is configured to receive raw milk input, the discharge end of the balance cylinder is connected to the preheating component, and the pasteurization equipment is connected to at least one heat exchanger of the balance cylinder and the preheating component through the switching valve group.

9. The pasteurization system according to claim 8, characterized in that, Also includes: An online cleaning device is connected to the balance cylinder to input cleaning fluid into the balance cylinder.

10. The pasteurization system according to any one of claims 1 to 7, characterized in that, Also includes: A cooling device is connected to the pasteurization device, and the cooling device is used to cool the pasteurized raw milk output from the pasteurization device.

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