Dairy product production system

Abstract

The utility model discloses a dairy product production system, and relates to the technical field of dairy product production, the dairy product production system comprises a first production pipeline, a second production pipeline, a third production pipeline, a fourth production pipeline, a fourth production pipeline, a fifth production pipeline and a sixth production pipeline, the separated lactose is stored in a third production pipeline, water in the second production pipeline selectively flows into a fourth production pipeline, lactose in the third production pipeline selectively flows into the fourth production pipeline, and the fourth production pipeline is used for performing enzymolysis and enzyme deactivation on a mixed solution of lactose and water; protein separated from the first production pipeline is stored in the fifth production pipeline, protein in the fifth production pipeline flows into the mixed production pipeline, and mixed liquid in the fourth production pipeline flows into the mixed production pipeline. Therefore, the Maillard reaction of the dairy product can be effectively avoided, the lactose content can be regulated and controlled to change the sweetness of the dairy product, and the product quality can be constant.

Description

TECHNICAL FIELD

[0001] The utility model relates to dairy production technology field especially is related to a dairy production system. BACKGROUND

[0002] In the related art, the number of lactose-intolerant people is considerable, which promotes the rise of zero-lactose products. However, most of the zero-lactose products on the market are produced by simply adding lactase, which results in a higher sweetness than raw milk, affecting the experience of consumers who pursue pure flavor or do not like sweet. In addition, during heat processing and shelf life, the active Maillard reaction causes fluctuations in the quality and color of dairy products, not only affecting stability and quality control, but also reducing the sensory experience of consumers, making the products fall into an unfavorable position in market competition and hindering their further development and promotion. SUMMARY

[0003] The utility model aims at at least solve one of the technical problems existing in the prior art. Therefore, one purpose of the utility model is to provide a dairy production system which can effectively prevent Maillard reaction in dairy products and change the sweetness of dairy products by adjusting the lactose content, thereby improving the sensory of the product and achieving constant product quality.

[0004] The dairy production system according to the embodiment of the utility model, comprising: a milk storage tank, a first production pipeline, the first production pipeline being in communication with the milk storage tank, the first production pipeline being used for separating raw cow milk into protein, cream, water and lactose, a second production pipeline, the second production pipeline being connected with the first production pipeline so that the water separated by the first production pipeline is stored in the second production pipeline, a third production pipeline, the third production pipeline being connected with the first production pipeline so that the lactose separated by the first production pipeline is stored in the third production pipeline, a fourth production pipeline, the second production pipeline being selectively in communication with the fourth production pipeline so that the water in the second production pipeline selectively flows into the fourth production pipeline, the third production pipeline being selectively in communication with the fourth production pipeline so that the lactose in the third production pipeline selectively flows into the fourth production pipeline, the fourth production pipeline being used for enzymolysis and enzyme inactivation of the mixture of lactose and water, a fifth production pipeline, the fifth production pipeline being selectively in communication with the first production pipeline so that the protein separated by the first production pipeline is stored in the fifth production pipeline, a mixed production pipeline, the mixed production pipeline being connected with the fifth production pipeline so that the protein in the fifth production pipeline flows into the mixed production pipeline, the fourth production pipeline being connected with the mixed production pipeline so that the mixture flows into the mixed production pipeline.

[0005] According to the dairy product production system, the raw milk is separated into protein, cream, water and lactose through the first production pipeline, the water separated by the first production pipeline is stored in the second production pipeline, the lactose separated by the first production pipeline is stored in the third production pipeline, the second production pipeline is selectively communicated with the fourth production pipeline to selectively flow the water in the second production pipeline into the fourth production pipeline, the third production pipeline is selectively communicated with the fourth production pipeline to selectively flow the lactose in the third production pipeline into the fourth production pipeline, the fourth production pipeline is used for enzymolysis and enzyme inactivation of the mixed solution of lactose and water, the fifth production pipeline is selectively communicated with the first production pipeline to store the protein separated by the first production pipeline in the fifth production pipeline, the mixed production pipeline is connected with the fifth production pipeline to flow the protein in the fifth production pipeline into the mixed production pipeline, the fourth production pipeline is connected with the mixed production pipeline to flow the mixed solution into the mixed production pipeline, the lactose can be enzymolyzed alone and then mixed with the protein, so that the Maillard reaction of the raw milk in the lactose enzymolysis process is effectively avoided, the sweetness of the dairy product can be changed by regulating the lactose content, the product sense is improved, and the product quality is constant.

[0006] According to some embodiments of the utility model, the first production pipeline includes: fat separation device, freezing point concentration device and centrifugal separation device, the freezing point concentration device is connected between the fat separation device and the centrifugal separation device, and the fat separation device is located on the upstream side of the freezing point concentration device, the fat separation device is used for separating the raw milk into skimmed milk and cream, the freezing point concentration device is used for separating the skimmed milk separated by the fat separation device into water and concentrated skimmed milk, and the centrifugal separation device is used for separating the concentrated skimmed milk into protein and lactose, the second production pipeline is connected with the freezing point concentration device, and the third production pipeline is connected with the centrifugal separation device.

[0007] According to some embodiments of the utility model, the first production pipeline further includes: first sterilization device, the first sterilization device is connected between the fat separation device and the freezing point concentration device, and the first sterilization device is used for sterilizing the skimmed milk separated by the fat separation device, so that the sterilized skimmed milk flows into the freezing point concentration device.

[0008] According to some embodiments of the utility model, the fourth production pipeline includes: mixed flow path, enzymolysis and enzyme inactivation tank, liquid return flow path and liquid outlet flow path, the second production pipeline is selectively communicated with the mixed flow path, the third production pipeline is selectively communicated with the mixed flow path, the mixed flow path is selectively communicated with the enzymolysis and enzyme inactivation tank, the liquid return flow path is selectively communicated with the enzymolysis and enzyme inactivation tank to flow the mixed solution flowing out of the enzymolysis and enzyme inactivation tank back to the enzymolysis and enzyme inactivation tank through the liquid return flow path, and the liquid outlet flow path is selectively communicated with the enzymolysis and enzyme inactivation tank and connected with the mixed production pipeline to flow the mixed solution flowing out of the enzymolysis and enzyme inactivation tank into the mixed production pipeline.

[0009] According to some embodiments of the present application, the fourth production pipeline further comprises: a lactase adding device, the lactase adding device being connected with the mixed flow path to add lactase into the mixed flow path.

[0010] According to some embodiments of the present application, the mixed flow path comprises: a first mixing tank and a second sterilization device, the first mixing tank and the second sterilization device being connected in series, and the second production pipeline and the third production pipeline being selectively communicated with the first mixing tank.

[0011] According to some embodiments of the present application, the fourth production pipeline further comprises: a first heating device, the first heating device being used for heating the mixed liquid in the mixed flow path.

[0012] According to some embodiments of the present application, the liquid return flow path is provided with a second heating device, the second heating device being used for heating the mixed liquid flowing into the liquid return flow path.

[0013] According to some embodiments of the present application, the fifth production pipeline comprises: a protein storage tank and a first sterilization device, the protein storage tank and the first sterilization device being connected in series, the protein storage tank being selectively communicated with the first production pipeline, and the first sterilization device being connected with the mixed production pipeline.

[0014] According to some embodiments of the present application, the dairy product production system further comprises: a sixth production pipeline, the sixth production pipeline being used for sterilizing butter, the sixth production pipeline being connected with the first production pipeline to make the first production pipeline separate out the butter to flow into the sixth production pipeline, and the sixth production pipeline being selectively communicated with the fifth production pipeline to make the sterilized butter selectively flow into the fifth production pipeline.

[0015] According to some embodiments of the present application, the sixth production pipeline comprises: a second mixing tank and a second sterilization device, the second mixing tank and the second sterilization device being connected in series, the second mixing tank being connected with the first production pipeline, and the second sterilization device being selectively communicated with the fifth production pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:

[0017] Figure 1 is a structural schematic diagram of a dairy product production system according to an embodiment of the present application.

[0018] REFERENCE NUMERALS

[0019] A dairy product production system 100;

[0020] A milk storage tank 10;

[0021] First production pipeline 1; fat separation device 11; freezing point concentration device 12; centrifugal separation device 13; first sterilization device 14;

[0022] Second production pipeline 2; water storage tank 21;

[0023] Third production pipeline 3; lactose storage tank 31;

[0024] Fourth production pipeline 4; mixed flow path 41; enzymatic hydrolysis and enzyme inactivation tank 42; liquid return flow path 43; liquid outlet flow path 44; lactase addition device 45; first heating device 46; second heating device 47;

[0025] Fifth production pipeline 5; protein storage tank 51; first sterilization device 52;

[0026] Sixth production pipeline 6; second mixing tank 61; second sterilization device 62;

[0027] Mixed production pipeline 7; first mixing tank 71; second sterilization device 72;

[0028] Eighth production pipeline 8; ninth production pipeline 9;

[0029] Centrifugal pump 101; milk clarifier 102; flow meter 103; online detection instrument 104; three-way valve 105; controller 106; mixer 107; filling machine 108. DETAILED DESCRIPTION

[0030] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0031] Reference is made below to Figure 1The milk product production system 100 according to the embodiment of the present application is described, comprising: a milk storage tank 10; a first production pipeline 1, the first production pipeline 1 is communicated with the milk storage tank 10, the first production pipeline 1 is used for separating raw milk into protein, cream, water and lactose, a second production pipeline 2, the second production pipeline 2 is connected with the first production pipeline 1, so that the water separated by the first production pipeline 1 is stored in the second production pipeline 2; a third production pipeline 3, the third production pipeline 3 is connected with the first production pipeline 1, so that the lactose separated by the first production pipeline 1 is stored in the third production pipeline 3, a fourth production pipeline 4, the second production pipeline 2 is selectively communicated with the fourth production pipeline 4, so that the water in the second production pipeline 2 selectively flows into the fourth production pipeline 4, the third production pipeline 3 is selectively communicated with the fourth production pipeline 4, so that the lactose in the third production pipeline 3 selectively flows into the fourth production pipeline 4, the fourth production pipeline 4 is used for enzymolysis and enzyme inactivation of the mixed solution of lactose and water, a fifth production pipeline 5, the fifth production pipeline 5 is selectively communicated with the first production pipeline 1, so that the protein separated by the first production pipeline 1 is stored in the fifth production pipeline 5, a mixed production pipeline 7, the mixed production pipeline 7 is connected with the fifth production pipeline 5, so that the protein in the fifth production pipeline 5 flows into the mixed production pipeline 7, the fourth production pipeline 4 is connected with the mixed production pipeline 7, so that the mixed solution flows into the mixed production pipeline 7.

[0032] The milk storage tank 10 is used for storing raw milk, the first production pipeline 1 is communicated with the milk storage tank 10, the raw milk can flow from the milk storage tank 10 to the first production pipeline 1, the first production pipeline 1 can be provided with a separation device for separating the raw milk into protein, cream, water and lactose, and the separation device can include a fat separation device 11, a freezing point concentration device 12, a centrifugal separation device 13 and the like.

[0033] The fat separation device 11 can separate the raw milk into cream and skimmed milk, so that the fat (i.e. cream) in the raw milk can be separated out, providing more pure skimmed milk for subsequent separation of protein, lactose and water, the skimmed milk enters the freezing point concentration device 12 and is concentrated at an ultra-low temperature, the water in the skimmed milk can form ice crystals, which can be separated from the skimmed milk by mechanical means (such as centrifugation and filtration), and the remaining concentrated skimmed milk after separation of the ice crystals can effectively retain protein, enzymes, vitamins, volatile compounds and food colorants, avoiding the risk of loss of natural ingredients during separation and concentration processing, improving the natural attribute value of the milk product, and also realizing separation of protein, cream, water and lactose in raw milk.

[0034] The second production pipeline 2 is connected with the first production pipeline 1 to store the water separated from the first production pipeline 1 in the second production pipeline 2, the third production pipeline 3 is connected with the first production pipeline 1 to store the lactose separated from the first production pipeline 1 in the third production pipeline 3, the second production pipeline 2 and the fourth production pipeline 4 can be connected through the three-way valve 105 to selectively communicate the second production pipeline 2 with the fourth production pipeline 4, so that the water in the second production pipeline 2 selectively flows into the fourth production pipeline 4, the third production pipeline 3 and the fourth production pipeline 4 can be connected through the three-way valve 105 to selectively communicate the third production pipeline 3 with the fourth production pipeline 4, so that the lactose in the third production pipeline 3 selectively flows into the fourth production pipeline 4, the fourth production pipeline 4 is used for enzymolysis and enzyme inactivation of the mixed solution of lactose and water, lactose can be extracted from raw cow milk and subjected to enzymolysis and enzyme inactivation treatment, the Maillard reaction between protein in raw cow milk and reducing sugar (lactose, and enzymolysis products of lactose, galactose and glucose) in the enzymolysis process can be avoided, the lactose content can be adjusted (such as reducing the lactose content) before lactose enzymolysis to reduce the sweetness of dairy products, so as to improve the product sensory, and the lactase after enzymolysis is subjected to enzyme inactivation, which can passivate (i.e., lactase loses its catalytic activity under certain conditions, i.e., the enzyme activity is reduced or lost) the lactase to avoid other adverse reactions of dairy products during the shelf life, thereby improving the product stability.

[0035] The fifth production pipeline 5 can be connected with the first production pipeline 1 through the three-way valve 105 to selectively communicate the fifth production pipeline 5 with the first production pipeline 1, so that the protein separated from the first production pipeline 1 is stored in the fifth production pipeline 5, the mixed production pipeline 7 is connected with the fifth production pipeline 5 to flow the protein in the fifth production pipeline 5 into the mixed production pipeline 7, and the fourth production pipeline 4 is connected with the mixed production pipeline 7 to flow the mixed solution into the mixed production pipeline 7, so that the mixed solution of lactose and water after enzymolysis and the protein are mixed, and the mixed dairy product is subjected to sterile filling into a specified package, thereby obtaining a dairy product with low sweetness, zero lactose and constant quality, which can improve the sensory experience of consumers and the competitiveness of the product.

[0036] According to the dairy product production system 100 of the embodiment of the utility model, through first production pipeline 1 is used to separate raw milk into protein, cream, water, lactose, so that the water separated by first production pipeline 1 is stored in second production pipeline 2, so that the lactose separated by first production pipeline 1 is stored in third production pipeline 3, second production pipeline 2 is selectively communicated with fourth production pipeline 4 to selectively flow into fourth production pipeline 4 in second production pipeline 2, third production pipeline 3 is selectively communicated with fourth production pipeline 4 to selectively flow into fourth production pipeline 4 in third production pipeline 3, fourth production pipeline 4 is used to enzymolysis and enzyme destruction of the mixed solution of lactose and water, fifth production pipeline 5 is selectively communicated with first production pipeline 1 to store the protein separated by first production pipeline 1 in fifth production pipeline 5, mixed production pipeline 7 is connected with fifth production pipeline 5 to flow into mixed production pipeline 7 in fifth production pipeline 5, fourth production pipeline 4 is connected with mixed production pipeline 7 to flow into mixed production pipeline 7 in mixed solution, can be enzymolysis after mixing with protein again, thereby effectively avoid raw milk in the process of lactose removal Maillard reaction, it is favorable to promote product appearance quality, and can change dairy product sweetness by regulating lactose content, thereby improving product taste, and then can realize product quality constant, to improve the sensory experience of consumer, also can improve the competitiveness of product.

[0037] According to some embodiments of the utility model, as shown in Figure 1 The first production pipeline 1 can include: a fat separation device 11, a freezing point concentration device 12 and a centrifugal separation device 13, the freezing point concentration device 12 is connected in series between the fat separation device 11 and the centrifugal separation device 13, and the fat separation device 11 is located on the upstream side of the freezing point concentration device 12, the fat separation device 11 is used to separate raw milk into skimmed milk and cream, the freezing point concentration device 12 is used to separate the skimmed milk separated by the fat separation device 11 into water and concentrated skimmed milk, and the centrifugal separation device 13 is used to separate the concentrated skimmed milk into protein and lactose, the second production pipeline 2 is connected with the freezing point concentration device 12, and the third production pipeline 3 is connected with the centrifugal separation device 13.

[0038] The fat separation device 11 is the fat separation device 11 described above, can be a fat separator, the freezing point concentration device 12 is the freezing point concentration device 12 described above, and the centrifugal separation device 13 is the centrifugal separation device 13 described above. The freezing point concentration device 12 is connected in series between the fat separation device 11 and the centrifugal separation device 13, and the fat separation device 11 is located on the upstream side of the freezing point concentration device 12, and is used for separating raw cow milk into skimmed milk and cream. Specifically, the fat separation device 11 can be connected with a milk clarifier 102 between the fat separation device 11 and the milk storage tank 10, the milk storage tank 10 can be connected with a centrifugal pump 101 between the milk storage tank 10 and the milk clarifier 102, raw cow milk is stored in the milk storage tank 10 after being purified, the outlet of the milk storage tank 10 is connected with the centrifugal pump 101, and the raw cow milk is transported to the milk clarifier 102 through the centrifugal pump 101. The milk clarifier 102 can separate impurities (such as impurities, bacteria, etc.) in the raw cow milk by centrifugal force to obtain pure raw cow milk, and the pure raw cow milk is separated into skimmed milk and cream after entering the fat separation device 11. The freezing point concentration device 12 is used for separating the skimmed milk separated by the fat separation device 11 into water and concentrated skimmed milk, and the centrifugal separation device 13 is used for separating the concentrated skimmed milk into protein and lactose. Through the setting and application of the fat separation device 11, the freezing point concentration device 12 and the centrifugal separation device 13, the separation of protein, cream, water and lactose in raw cow milk can be realized, the separated products can be used as different raw materials, or can be used to produce different products, for example: zero-lactose dairy products. Through the continuous and automatic production process, the quality problems caused by human factors can be reduced, and the stability and safety of the products can be improved.

[0039] The second production pipeline 2 is connected with the freezing point concentration device 12, and can be used for storing the water separated from the skimmed milk in the second production pipeline 2. The second production pipeline 2 can include a water storage tank 21 used for storing the water separated from the skimmed milk. The third production pipeline 3 is connected with the centrifugal separation device 13, and can be used for storing the lactose separated from the concentrated skimmed milk in the third production pipeline 3. The third production pipeline 3 can include a lactose storage tank 31 used for storing the lactose separated from the concentrated skimmed milk. Through the setting of the first production pipeline 1, the second production pipeline 2 and the third production pipeline 3, the effective separation and storage of water and lactose in skimmed milk can be realized, so that the utilization rate of resources is improved, and the whole production process is more continuous and efficient. Therefore, the production cost can be reduced, and the production efficiency can be improved.

[0040] According to some embodiments of the utility model, Figure 1As shown, the first production pipeline 1 can further include a first sterilization device 14 connected in series between the fat separation device 11 and the freezing point concentration device 12, and the first sterilization device 14 is used for sterilizing the skim milk separated by the fat separation device 11, so that the sterilized skim milk flows into the freezing point concentration device 12.

[0041] The first sterilization device 14 can be a MF membrane device (Microfiltration membrane device is a kind of technical equipment for filtering separation by using microporous membrane), which can effectively remove suspended particulate matter, bacteria and other impurities. The first sterilization device 14 is connected in series between the fat separation device 11 and the freezing point concentration device 12, realizing continuous sterilization and concentration treatment of skim milk, and improving the automation degree and production efficiency of the production line. The first sterilization device 14 is used for sterilizing the skim milk separated by the fat separation device 11, so that the sterilized skim milk flows into the freezing point concentration device 12. Through sterilization treatment, the possibility of microbial contamination in the subsequent production process can be reduced, thereby improving the safety and stability of the product. Moreover, the skim milk directly flows into the freezing point concentration device 12 after sterilization, reducing the storage and transportation of intermediate links, and reducing production cost and energy consumption.

[0042] According to some embodiments of the present application, as shown in Figure 1 The fourth production pipeline 4 can include a mixing flow path 41, an enzymatic hydrolysis and enzyme inactivation tank 42, a liquid return flow path 43 and a liquid outlet flow path 44. The second production pipeline 2 selectively communicates with the mixing flow path 41, the third production pipeline 3 selectively communicates with the mixing flow path 41, the mixing flow path 41 selectively communicates with the enzymatic hydrolysis and enzyme inactivation tank 42, the liquid return flow path 43 selectively communicates with the enzymatic hydrolysis and enzyme inactivation tank 42 to make the mixed liquid flowing out of the enzymatic hydrolysis and enzyme inactivation tank 42 flow back to the enzymatic hydrolysis and enzyme inactivation tank 42 through the liquid return flow path 43, and the liquid outlet flow path 44 selectively communicates with the enzymatic hydrolysis and enzyme inactivation tank 42 and is connected with the mixed production pipeline 7 to make the mixed liquid flowing out of the enzymatic hydrolysis and enzyme inactivation tank 42 flow into the mixed production pipeline 7.

[0043] The second production pipeline 2 and the third production pipeline 3 can be connected with the mixing flow path 41 through a three-way valve 105, so that the second production pipeline 2 selectively communicates with the mixing flow path 41, and the third production pipeline 3 selectively communicates with the mixing flow path 41. By adjusting the opening and closing state of the three-way valve 105 and accurately controlling the opening and closing time and flow of the three-way valve 105, the proportion of raw materials can be accurately controlled, and different production requirements can be easily adapted.

[0044] Specifically, the second production pipeline 2, the third production pipeline 3 and the mixing flow path 41 can be connected with the centrifugal pump 101 and the flow meter 103, and the precise control of the proportion of lactose and water can be automatically realized by precisely controlling the switching time and flow of the three-way valve 105, the centrifugal pump 101 and the flow meter 103. For example, the mixing amount of lactose can be reduced to avoid the lactose flowing into the mixing flow path 41 to be enzymatically hydrolyzed, thereby reducing the content of lactose in the subsequent product to reduce the sweetness of the dairy product, improving the product sensory and meeting the needs of different consumers.

[0045] When the second production pipeline 2 and the mixing flow path 41 are communicated, and the third production pipeline 3 and the mixing flow path 41 are communicated, the water and the lactose can be mixed, and the design of the mixing flow path 41 ensures the sufficient mixing of the water and the lactose, providing uniform reaction substrate for the subsequent enzymatic hydrolysis reaction, which helps to improve the enzymatic hydrolysis efficiency and product quality.

[0046] The mixing flow path 41, the liquid return flow path 43 and the enzymatic hydrolysis and enzyme inactivation tank 42 can be connected through a three-way valve 105, and the liquid return flow path 43, the liquid outlet flow path 44 and the enzymatic hydrolysis and enzyme inactivation tank 42 can be connected through a three-way valve 105, so that the mixing flow path 41 is selectively communicated with the enzymatic hydrolysis and enzyme inactivation tank 42, the liquid return flow path 43 is selectively communicated with the enzymatic hydrolysis and enzyme inactivation tank 42 to make the mixed liquid flowing out of the enzymatic hydrolysis and enzyme inactivation tank 42 flow back to the enzymatic hydrolysis and enzyme inactivation tank 42 through the liquid return flow path 43, and the liquid outlet flow path 44 is selectively communicated with the enzymatic hydrolysis and enzyme inactivation tank 42 and connected with the mixed production pipeline 7 to make the mixed liquid flowing out of the enzymatic hydrolysis and enzyme inactivation tank 42 flow into the mixed production pipeline 7. The conditions such as temperature, pH value and stirring speed in the enzymatic hydrolysis and enzyme inactivation tank 42 can be precisely controlled to ensure that the enzymatic hydrolysis reaction is carried out under the optimal conditions, thereby improving the enzymatic hydrolysis efficiency and product purity.

[0047] Specifically, when the mixing flow path 41 is communicated with the enzymatic hydrolysis and enzyme inactivation tank 42, the liquid return flow path 43 is not communicated with the enzymatic hydrolysis and enzyme inactivation tank 42, and the liquid outlet flow path 44 is not communicated with the enzymatic hydrolysis and enzyme inactivation tank 42, the mixed liquid of lactose and water in the mixing flow path 41 can flow into the enzymatic hydrolysis and enzyme inactivation tank 42 for enzymatic hydrolysis. When the mixing flow path 41 is not communicated with the enzymatic hydrolysis and enzyme inactivation tank 42, the liquid return flow path 43 is communicated with the enzymatic hydrolysis and enzyme inactivation tank 42, and the liquid outlet flow path 44 is communicated with the enzymatic hydrolysis and enzyme inactivation tank 42, the mixed liquid of lactose and water after enzymatic hydrolysis can flow back to the enzymatic hydrolysis and enzyme inactivation tank 42 for enzyme inactivation treatment of the mixed liquid of lactose and water, and the mixed liquid of lactose and water after enzyme inactivation treatment is discharged from the enzymatic hydrolysis and enzyme inactivation tank 42 through the liquid outlet flow path 44 and enters the subsequent process. In this way, the activity of the enzyme can be stopped to prevent the influence of the subsequent reaction on the product quality.

[0048] By controlling the communication state among the mixed flow path 41, the liquid return flow path 43, the liquid outlet flow path 44, and the enzymolysis and enzyme inactivation tank 42, flexible switching of the production process can be realized, which not only improves the production efficiency, but also ensures the stability and safety of the product quality.

[0049] According to some embodiments of the present application, as shown in Figure 1 The fourth production pipeline 4 can further include a lactase adding device 45 connected with the mixed flow path 41 to add lactase into the mixed flow path 41.

[0050] The lactase adding device 45 can be a lactase adding hopper, a lactase metering pump, or the like, which is connected with the mixed flow path 41 to add lactase into the mixed flow path 41, so as to accurately control the amount of lactase added, ensure that the lactase concentration in the mixed flow path 41 reaches the optimal level, make the lactase uniformly dispersed in the mixed solution of lactose and water in the mixed flow path 41, thereby ensuring that the lactase fully contacts with the substrate and reacts, which helps to improve the purity and quality of the enzymolysis product.

[0051] According to some embodiments of the present application, as shown in Figure 1 The mixed flow path 41 can include a first mixing tank 71 and a second sterilization device 72 connected in series, and the second production pipeline 2 and the third production pipeline 3 are selectively communicated with the first mixing tank 71.

[0052] The first mixing tank 71 is used for mixing lactose and water and storing the mixed solution of lactose and water, and the second sterilization device 72 can be used for sterilization, and the first mixing tank 71 and the second sterilization device 72 are connected in series, so that the second sterilization device 72 can sterilize the mixed solution of lactose and water to improve the safety of the product. The second production pipeline 2 and the third production pipeline 3 can be connected with the first mixing tank 71 through a three-way valve 105, so that the second production pipeline 2 and the third production pipeline 3 are selectively communicated with the first mixing tank 71, and the second production pipeline 2, the third production pipeline 3 and the mixing flow path 41 can be connected with a centrifugal pump 101 and a flow meter 103, and the opening and closing time and the flow of the three-way valve 105, the centrifugal pump 101 and the flow meter 103 can be accurately controlled, so that the accurate control of the proportion of lactose and water can be automatically realized, for example, the mixing amount of lactose can be reduced to avoid that all the lactose flows into the mixing flow path 41 and is enzymolyzed, thereby the content of lactose in the subsequent product can be reduced to reduce the sweetness of the dairy product, so as to improve the product sense and meet the needs of different consumers. It can be explained that the lactase adding device 45 can be connected to the first mixing tank 71, and the additive amount of the enzyme can be selected according to the proportion of lactose and water in the first mixing tank 71.

[0053] According to some embodiments of the present application, as shown in Figure 1 The fourth production pipeline 4 can further include a first heating device 46, and the first heating device 46 is used for heating the mixed solution in the mixing flow path 41.

[0054] The first heating device 46 can be connected between the first mixing tank 71 and the second sterilization device 72, and the first heating device 46 is used for heating the mixed solution in the mixing flow path 41, so that the mixed solution in the mixing flow path 41 can be heated to a target enzymolysis temperature and then sterilized by the second sterilization device 72 to reach a commercial sterile standard, and the sterilized mixed solution can flow into the enzymolysis and enzyme inactivation tank 42 for enzymolysis. The enzymolysis temperature can be set according to actual conditions to improve the enzymolysis efficiency, shorten the pre-enzymolysis waiting time and reduce the amount of lactase used, thereby reducing the production cost.

[0055] According to some embodiments of the present application, as shown in Figure 1 The return flow path 43 is provided with a second heating device 47, and the second heating device 47 is used for heating the mixed solution flowing into the return flow path 43.

[0056] The lactose and water mixed solution in the enzymolysis and enzyme inactivation tank 42 can be enzymolyzed, and then can flow to the liquid return flow path 43 through the centrifugal pump 101 and the three-way valve 105 between the second heating device 47 and the enzymolysis and enzyme inactivation tank 42, the liquid return flow path 43 is provided with the second heating device 47, the second heating device 47 is used for heating the mixed solution flowing into the liquid return flow path 43, and the enzymolyzed mixed solution is flowed back into the enzymolysis and enzyme inactivation tank 42 for enzyme inactivation, so that the lactase is inactivated. Enzymolysis and enzyme inactivation of lactose alone can avoid the Maillard reaction caused by the protein in raw milk and the reducing sugar (lactose, and galactose and glucose after lactose enzymolysis) under high temperature and long time treatment, and after the lactase is inactivated, other adverse reactions of dairy products during the shelf life can also be avoided, and the product stability is improved.

[0057] According to some embodiments of the present application, as shown in Figure 1 The fifth production pipeline 5 can include: a protein storage tank 51 and a first sterilization device 52, the protein storage tank 51 and the first sterilization device 52 are connected in series, the protein storage tank 51 is selectively communicated with the first production pipeline 1, and the first sterilization device 52 is connected with the mixed production pipeline 7.

[0058] The protein storage tank 51 can be used for storing the concentrated skimmed milk (the concentrated skimmed milk includes protein, enzyme, vitamin, volatile compound and edible pigment) separated from the centrifugal separation device 13 and not containing lactose, the first sterilization device 52 can be used for sterilization, the protein storage tank 51 and the first sterilization device 52 are connected in series, the protein storage tank 51 and the first production pipeline 1 can be connected through the three-way valve 105, so that the protein storage tank 51 is selectively communicated with the first production pipeline 1, the first sterilization device 52 is connected with the mixed production pipeline 7, so that the concentrated skimmed milk separated from the first production pipeline 1 can be stored in the protein storage tank 51, and the concentrated skimmed milk can flow into the mixed production pipeline 7 after sterilization through the first sterilization device 52, and the subsequent process of the product is carried out. By such arrangement, the lactose in raw milk can be separated from the protein, so that the Maillard reaction between the protein and the reducing sugar during lactose enzymolysis can be avoided.

[0059] According to some embodiments of the present application, as shown in Figure 1 The dairy product production system 100 can further include: a sixth production pipeline 6, the sixth production pipeline 6 is used for sterilizing butter, the sixth production pipeline 6 is connected with the first production pipeline 1 to make the butter separated from the first production pipeline 1 flow into the sixth production pipeline 6, and the sixth production pipeline 6 is selectively communicated with the fifth production pipeline 5 to make the sterilized butter selectively flow into the fifth production pipeline 5.

[0060] The sixth production pipeline 6 is used for sterilizing the cream, the sixth production pipeline 6 is connected with the first production pipeline 1 so that the first production pipeline 1 is separated to make the cream flow into the sixth production pipeline 6, and the sixth production pipeline 6 is connected with the fifth production pipeline 5 through a three-way valve 105 so that the sixth production pipeline 6 is selectively communicated with the fifth production pipeline 5 to selectively make the sterilized cream flow into the fifth production pipeline 5, when the sixth production pipeline 6 is communicated with the fifth production pipeline 5, the sterilized cream can flow into the protein storage tank 51 in the fifth production pipeline 5, and then be mixed with the concentrated skimmed milk, and then flow into the mixed production pipeline 7 after sterilization by the first sterilization device 52, the mixture of the sterilized cream and the concentrated skimmed milk, the lactose subjected to single enzymolysis and enzyme inactivation, and the mixed solution of water can be mixed in the mixer 107 of the mixed production pipeline 7 according to a preset proportion, and then be aseptically filled into a specified package by the filling machine 108 of the mixed production pipeline 7, so that the dairy product with low sweetness, zero lactose and constant quality can be obtained, the sensory experience of consumers can be improved, and the competitiveness of the product can be improved.

[0061] According to some embodiments of the utility model, as shown in Figure 1 The sixth production pipeline 6 can include a second mixing tank 61 and a second sterilization device 62, the second mixing tank 61 and the second sterilization device 62 are connected in series, the second mixing tank 61 is connected with the first production pipeline 1, and the second sterilization device 62 is selectively communicated with the fifth production pipeline 5.

[0062] The dairy product production system 100 can further include an eighth production pipeline 8 and a ninth production pipeline 9, the ninth production pipeline 9 is connected between the second mixing tank 61 and the fat separation device 11, and is used for conveying the cream separated by the fat separation device 11 into the second mixing tank 61, and the eighth production pipeline 8 is connected between the first sterilization device 14 and the second mixing tank 61, so that the retentate obtained by sterilizing the skimmed milk by the first sterilization device 14 can be conveyed into the second mixing tank 61 through the eighth production pipeline 8, and the cream and the retentate are mixed in the second mixing tank 61, the second mixing tank 61 and the second sterilization device 62 are connected in series, and the mixed cream and the retentate can be subjected to high-intensity sterilization by the second sterilization device 62, so that the product quality can be further ensured, the loss of nutrients in the retentate can be avoided, the material loss can be reduced, and the product yield can be improved.

[0063] The second sterilization device 62 and the fifth production line 5 can be connected via a three-way valve 105, allowing the second sterilization device 62 to selectively connect to the fifth production line 5. When the second sterilization device 62 is connected to the fifth production line 5, the mixture of sterilized cream and retentate can be transported through the fifth production line 5 to the protein storage tank 51 to be mixed with concentrated skim milk. After being sterilized by the first sterilization device 52, it flows into the mixing production line 7. The mixture of sterilized cream, retentate, and concentrated skim milk, along with the mixture of separately enzymatically hydrolyzed and enzyme-inactivated lactose and water, can be mixed in a preset ratio in the mixer 107 of the mixing production line 7. Then, the mixture is aseptically filled into the specified package by the filling machine 108 of the mixing production line 7, thereby obtaining a low-sweetness, lactose-free, and consistently high-quality dairy product, which can enhance the consumer's sensory experience and improve the product's competitiveness.

[0064] Furthermore, such as Figure 1 As shown, online testing instruments 104 can be installed in the second production line 2, the third production line 3, the fourth production line 4, the fifth production line 5, and the sixth production line 6. The dairy production system 100 is connected to a controller 106, such as a PLC controller 106. The controller 106 can communicate with the online testing instruments 104, centrifugal pumps 101, and other devices to realize online control and testing of the dairy production system 100. This avoids manual offline testing, reduces the labor intensity of workers, improves testing accuracy, and reduces production costs. Furthermore, the dairy production system 100 operates at low temperatures throughout the product production process, which better preserves the nutrients in raw milk, further enhancing the consumer's sensory experience and improving the product's competitiveness.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0066] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A dairy product production system, characterized in that, The milk storage tank, the first production pipeline, the second production pipeline, the third production pipeline, the fourth production pipeline, the fifth production pipeline, the mixed production pipeline, the fat separation device, the ice-point concentration device, the centrifugal separation device, the first sterilization device, the mixed flow path, the enzyme hydrolysis and enzyme inactivation tank, the liquid return flow path, and the liquid outlet flow path. The milk storage tank, the first production pipeline, the second production pipeline, the third production pipeline, the fourth production pipeline, the fifth production pipeline, the mixed production pipeline, the fat separation device, the ice-point concentration device, the centrifugal separation device, the first sterilization device, the mixed flow path, the enzyme hydrolysis and enzyme inactivation tank, the liquid return flow path, and the liquid outlet flow path. The first production pipeline further comprises a first sterilization device, which is connected in series between the fat separation device and the ice-point concentration device, and is used for sterilizing the skimmed milk separated by the fat separation device, so that the sterilized skimmed milk flows into the ice-point concentration device. The fourth production pipeline comprises a mixed flow path, an enzyme hydrolysis and enzyme inactivation tank, a liquid return flow path, and a liquid outlet flow path. The second production pipeline is selectively connected with the mixed flow path, and the third production pipeline is selectively connected with the mixed flow path. The liquid return flow path is selectively connected with the enzyme hydrolysis and enzyme inactivation tank, so that the mixed solution flowing out of the enzyme hydrolysis and enzyme inactivation tank flows back to the enzyme hydrolysis and enzyme inactivation tank through the liquid return flow path. The liquid outlet flow path is selectively connected with the enzyme hydrolysis and enzyme inactivation tank and the mixed production pipeline, so that the mixed solution flowing out of the enzyme hydrolysis and enzyme inactivation tank flows into the mixed production pipeline. ​ 2. The dairy product production system according to claim 1, characterized in that, ​ 3. The dairy product production system according to claim 2, characterized in that, ​ 4. The dairy product production system according to claim 1, characterized in that, ​ ​ ​ ​ 5. The dairy product production system according to claim 4, characterized in that, The fourth production pipeline further comprises a lactase adding device connected with the mixing flow path to add lactase into the mixing flow path.

6. The dairy product production system according to claim 4, characterized in that, The mixing flow path comprises a first mixing tank and a second sterilization device connected in series, and the second production pipeline and the third production pipeline are selectively communicated with the first mixing tank.

7. The dairy product production system according to claim 4, characterized in that, The fourth production pipeline further comprises a first heating device for heating the mixed liquid in the mixing flow path.

8. The dairy product production system according to claim 4, characterized in that, The liquid return flow path is provided with a second heating device for heating the mixed liquid flowing into the liquid return flow path.

9. The dairy product production system according to claim 1, characterized in that, The fifth production pipeline comprises a protein storage tank and a first sterilization device connected in series, the protein storage tank is selectively communicated with the first production pipeline, and the first sterilization device is connected with the mixing production pipeline.

10. The dairy product production system according to any one of claims 1-9, characterized in that, Further comprising: A sixth production pipeline for sterilizing cream, the sixth production pipeline is connected with the first production pipeline to separate the cream in the first production pipeline to flow into the sixth production pipeline, and the sixth production pipeline is selectively communicated with the fifth production pipeline to selectively flow the sterilized cream into the fifth production pipeline.

11. The dairy product production system according to claim 10, characterized in that, The sixth production pipeline comprises a second mixing tank and a second sterilization device connected in series, the second mixing tank is connected with the first production pipeline, and the second sterilization device is selectively communicated with the fifth production pipeline.

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