Concentration and separation device for dairy products

Abstract

The utility model discloses a dairy product concentration and separation device which comprises a material balance tank, a clean steam generator set, a flash evaporation preheater, a first-effect evaporator, a second-effect evaporator and a third-effect evaporator, and the second-effect evaporator and the third-effect evaporator are connected with an effective space preheater through a pipeline. The utility model has the beneficial effects that the lower part of the second-effect evaporator and the top of the third-effect evaporator are connected with the effective-effect preheater through the pipeline, so that materials which flow out of the second-effect evaporator and are conveyed to the third-effect evaporator can be heated in the inter-effect flowing process by virtue of the arrangement of the effective-effect preheater; the condition that the temperature of the materials entering the triple-effect evaporator is low due to the fact that the conveying stroke of the materials is too long is avoided, meanwhile, it is guaranteed that the materials have the temperature range meeting the production process requirement when entering the triple-effect evaporator, and the concentration efficiency of dairy product raw materials is improved.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary components for dairy product processing, specifically to a dairy product concentration and separation device. Background Technology

[0002] In the concentration and separation of dairy products, a falling film evaporator system is usually used to concentrate dairy materials. In a typical concentration process, the material is usually preheated indirectly through multiple stages, then passes through an indirect sterilizer, and the sterilized material enters the falling film evaporator system to reach the required concentration.

[0003] In existing traditional falling film evaporators, a biofilm forms on the stainless steel inner surface of the tubular preheater during the multiple indirect, staged preheating processes of the feed liquid. The presence of this biofilm facilitates the adhesion, growth, reproduction, and release of microorganisms onto the stainless steel surface—a proven fact. The optimal temperature range for the growth and reproduction of thermophilic bacteria is 45–65°C, and the preheating zone of existing traditional falling film evaporators falls precisely within this temperature range. This leads to an increase in the number of thermophilic bacteria in the feed liquid, failing to meet the hygiene requirements of the dairy industry. Utility Model Content

[0004] The purpose of this invention is to provide a dairy product concentration and separation device to solve the above problems. After the material is preheated once by the tube preheater, it will directly enter the flash preheater, so that the material can be preheated to the temperature required by the process after direct contact with the steam, avoiding the temperature range in which thermophilic bacteria are prone to grow and reproduce, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This utility model provides a concentration and separation device for dairy products, including a material balance tank, a clean steam generator group, a flash preheater, a first-effect evaporator, a second-effect evaporator, and a third-effect evaporator. The material balance tank and the clean steam generator group are respectively connected to the flash preheater through pipelines, and the flash preheater is connected to the first-effect evaporator through pipelines. At the same time, a double filter is connected to the pipeline connecting the flash preheater and the first-effect evaporator.

[0007] The first-effect evaporator is connected to the second-effect evaporator via a pipeline, and the second-effect evaporator is connected to the third-effect evaporator via a pipeline. At the same time, the first-effect evaporator, the second-effect evaporator, and the third-effect evaporator are respectively connected to a first-effect separator, a second-effect separator, and a third-effect separator via pipelines.

[0008] The first-effect evaporator and the clean steam generator group are connected by a pipeline to a first-effect thermostatic pump, and the second-effect evaporator and the third-effect evaporator are connected by a pipeline to an inter-effect preheater.

[0009] Preferably, the flash preheater is connected to a spray sterilizer via a pipeline. The spray sterilizer is connected to the flash preheater via an insulation pipe. The material is preheated by steam in the flash preheater and then enters the spray sterilizer for sterilization. After sterilization, the material is returned to the flash preheater in a warm state via the insulation pipe and then conveyed to the first-effect evaporator.

[0010] Preferably, a sterilizer feed pump is connected to the pipeline combination between the flash preheater and the spray sterilizer, and a flash discharge pump is connected to the pipeline combination between the flash preheater and the first-effect evaporator.

[0011] Preferably, a first-effect discharge pump is connected between the pipelines connecting the first-effect evaporator and the second-effect evaporator, a second-effect discharge pump is connected between the pipelines connecting the second-effect evaporator and the third-effect evaporator, and a third-effect circulation pump is connected between the top and bottom of the third-effect evaporator via pipelines.

[0012] Preferably, the lower part of the triple-effect evaporator is connected to a material discharge pump for discharging concentrated materials via a pipeline.

[0013] Preferably, the material balance tank and the flash preheater are connected by a tube preheater via a pipeline, and the triple-effect separator is connected to the tube preheater via a pipeline.

[0014] Preferably, both the tube preheater and the flash preheater are connected to the tube condenser via pipelines.

[0015] Preferably, the tube condenser and the tube preheater are also equipped with a condensate tank, a condensate pump and a water ring vacuum pump.

[0016] Preferably, the material balance tank is connected to a material feed pump via a pipeline.

[0017] In the above-mentioned dairy product concentration and separation device, in practical application, the material, after being preheated once by the tube preheater, directly enters the flash preheater. This allows the material to be preheated to the required process temperature upon direct contact with steam, avoiding the temperature range where thermophilic bacteria easily grow and multiply. This helps reduce the growth of thermophilic bacteria in the feed liquid and helps meet the hygiene requirements of the dairy industry. Simultaneously, since the lower part of the second-effect evaporator and the top of the third-effect evaporator are connected to the inter-effect preheater via pipelines, the inter-effect preheater can heat the material flowing out of the second-effect evaporator and being conveyed to the third-effect evaporator during the inter-effect flow process, thus avoiding... This design avoids situations where the material entering the triple-effect evaporator is at a low temperature due to an excessively long material conveying journey. It also ensures that the material enters the triple-effect evaporator within a temperature range that meets the production process requirements, thus improving the concentration efficiency of dairy raw materials. Furthermore, because a dual filter is connected between the flash discharge pump and the first-effect evaporator via a pipeline, the double filter can perform fine filtration of the flash-sterilized dairy products. This ensures effective removal of impurities and particulate matter from the dairy materials, preventing contamination of the falling film tubes of the first, second, and third-effect evaporators, and also helps meet the hygiene requirements of the dairy industry.

[0018] The beneficial effects are as follows: 1. After being preheated once by the tube preheater, the material of this utility model will directly enter the flash preheater, which will enable the material to be preheated to the required temperature after direct contact with the steam. This avoids the temperature range in which thermophilic bacteria are prone to grow and multiply, which helps to reduce the growth of thermophilic bacteria in the liquid and helps to meet the hygiene requirements of the dairy industry.

[0019] 2. The lower part of the double-effect evaporator and the top of the triple-effect evaporator are connected to an inter-effect preheater through pipelines. The inter-effect preheater can heat the material flowing out of the double-effect evaporator and into the triple-effect evaporator during the inter-effect flow process. This avoids the situation where the material temperature is too low when it enters the triple-effect evaporator due to the material conveying path being too long. At the same time, it ensures that the material has a temperature range that meets the production process requirements when it enters the triple-effect evaporator, which helps to improve the concentration efficiency of dairy raw materials.

[0020] 3. A dual filter is connected between the flash discharge pump and the first-effect evaporator via a pipeline. The dual filter can finely filter the dairy products after flash sterilization, ensuring that impurities and particulate matter in the dairy products can be effectively removed. This avoids contamination of the inner surface of the falling film tubes of the first-effect, second-effect, and third-effect evaporators, and also helps to meet the hygiene requirements of the dairy industry. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall layout of this utility model.

[0023] The annotations in the attached figures are explained as follows:

[0024] 1. Jet sterilizer; 2. Insulated pipe; 3. Flash preheater; 4. Flash discharge pump; 5. Sterilizer feed pump; 6. Dual filter; 7. Clean steam generator set; 8. First-effect separator; 9. First-effect discharge pump; 10. Triple-effect circulating pump; 11. Triple-effect separator; 12. Material discharge pump; 13. Second-effect discharge pump; 14. Second-effect separator; 15. Material feed pump; 16. Material balance tank; 17. Water ring vacuum pump; 18. Condensate pump; 19. Condensate tank; 20. Shell and tube condenser; 21. Shell and tube preheater; 22. Inter-effect preheater; 23. Second-effect evaporator; 24. Triple-effect evaporator; 25. First-effect autoclave pump; 26. First-effect evaporator. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] See Figure 1 As shown, this utility model provides a concentration and separation device for dairy products, including a material balance tank 16, a clean steam generator group 7, a flash preheater 3, a first-effect evaporator 26, a second-effect evaporator 23, and a third-effect evaporator 24. The material balance tank 16 and the clean steam generator group 7 are respectively connected to the flash preheater 3 through pipelines, and the flash preheater 3 is connected to the first-effect evaporator 26 through pipelines. At the same time, a double filter 6 is connected to the pipeline connecting the flash preheater 3 and the first-effect evaporator 26. The purpose of this arrangement is that, since the double filter 6 is connected to the flash discharge pump 4 and the first-effect evaporator 26 through pipelines, the flash-sterilized dairy products can be finely filtered by the double filter 6, ensuring that impurities and particulate matter in the dairy product materials can be effectively removed.

[0027] See Figure 1 As shown, the first-effect evaporator 26 is connected to the second-effect evaporator 23 via pipelines, and the second-effect evaporator 23 is connected to the third-effect evaporator 24 via pipelines. Simultaneously, the first-effect evaporator 26, the second-effect evaporator 23, and the third-effect evaporator 24 are respectively connected to the first-effect separator 8, the second-effect separator 14, and the third-effect separator 11 via pipelines. The first-effect evaporator 26 and the clean steam generator group 7 are connected to the first-effect thermostatic pump 25 via pipelines. The second-effect evaporator 23 and the third-effect evaporator 24 are connected to an inter-effect preheater 22 via pipelines. The purpose of this arrangement is to heat the material flowing from the second-effect evaporator 23 and being conveyed to the third-effect evaporator 24 during the inter-effect flow process, thus avoiding the situation where the material temperature is too low when entering the third-effect evaporator 24 due to an excessively long material conveying journey, and also ensuring that the material has a temperature range that meets the production process requirements when entering the third-effect evaporator 24.

[0028] See Figure 1 As shown, the following more specific optimizations were made to this scheme: The flash preheater 3 is connected to the spray sterilizer 1 via pipelines. The spray sterilizer 1 is connected to the flash preheater 3 via an insulation pipe 2. With this setup, the material, after being pre-steamed by the flash preheater 3, enters the spray sterilizer 1 for sterilization. Then, the sterilized material, under insulation, is returned to the flash preheater 3 in a warm state via the insulation pipe 2, and subsequently conveyed to the first-effect evaporator 26. Optionally, a sterilizer feed pump 5 is connected to the pipeline combination between the flash preheater 3 and the spray sterilizer 1, and a flash discharge pump 4 is connected to the pipeline combination between the flash preheater 3 and the first-effect evaporator 26. This setup facilitates stable material delivery into the spray sterilizer 1 via the sterilizer feed pump 5, and also facilitates stable material delivery to the first-effect evaporator 26 via the flash discharge pump 4. Furthermore, a first-effect discharge pump 9 is connected to the pipeline connecting the first-effect evaporator 26 and the second-effect evaporator 23, and a second-effect discharge pump 13 is connected to the pipeline connecting the second-effect evaporator 23 and the third-effect evaporator 24. A third-effect circulation pump 10 is connected between the top and bottom of the third-effect evaporator 24 via pipelines. With this configuration, the first-effect discharge pump 9 and the second-effect discharge pump 13 can smoothly transport materials between the first-effect evaporator 26, the second-effect evaporator 23, and the third-effect evaporator 24 in sequence. At the same time, the third-effect circulation pump 10 can enable the materials to be concentrated a second time in the third-effect evaporator 24, which is beneficial to improving the concentration effect of the materials.

[0029] See Figure 1As shown, the lower part of the triple-effect evaporator 24 is connected to a material discharge pump 12 via a pipeline to discharge concentrated material, so that the concentrated material can be smoothly discharged and transported to the outside through the triple-effect evaporator 24 by means of the material discharge pump 12. Optionally, a tube preheater 21 is connected to the material balance tank 16 and the flash preheater 3 via a pipeline, and the triple-effect separator 11 is connected to the tube preheater 21, so that the material can be pre-prepared by means of the tube preheater 21 to ensure that the pre-prepared material has a better flash evaporation effect. Furthermore, both the tube preheater 21 and the flash preheater 3 are connected to the tube condenser 20 via pipelines, so that the tube condenser 20 can be used to cool the tube preheater 21 and the flash preheater 3 during operation. Optionally, the tube condenser 20 and the tube preheater 21 are also equipped with a condensate tank 19, a condensate pump 18, and a water ring vacuum pump 17, so that the tube condenser 20 and the tube preheater 21 can operate stably and smoothly. Further optionally, the material balance tank 16 is connected to a material feed pump 15 via pipelines, which facilitates the smooth and stable flow of materials via the material feed pump 15.

[0030] With the above structure, in practical application, after the material is preheated once by the tube preheater 21, it directly enters the flash preheater 3. This allows the material to be preheated to the required temperature upon direct contact with steam, avoiding the temperature range where thermophilic bacteria easily grow and multiply. This helps reduce the growth of thermophilic bacteria in the liquid, thus meeting the hygiene requirements of the dairy industry. Simultaneously, since the lower part of the second-effect evaporator 23 and the top of the third-effect evaporator 24 are connected to the inter-effect preheater 22 via pipelines, the inter-effect preheater 22 can heat the material flowing from the second-effect evaporator 23 to the third-effect evaporator 24 during the inter-effect flow process. This avoids the problem of excessive heat buildup due to the material's temperature range. The excessively long material conveying journey results in a lower temperature of the material entering the triple-effect evaporator 24. However, this also ensures that the material enters the triple-effect evaporator 24 within the temperature range required by the production process, which helps to improve the concentration efficiency of dairy raw materials. Furthermore, since a double filter 6 is connected between the flash discharge pump 4 and the first-effect evaporator 26 through a pipeline, the double filter 6 can perform fine filtration on the flash-sterilized dairy products, ensuring that impurities and particulate matter in the dairy materials can be effectively removed. This avoids contamination of the inner surface of the falling film tubes of the first-effect evaporator 26, the second-effect evaporator 23, and the triple-effect evaporator 24, and also helps to meet the hygiene requirements of the dairy industry.

[0031] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A concentration and separation device for dairy products, comprising a material balance tank (16), a clean steam generator group (7), a flash preheater (3), a first-effect evaporator (26), a second-effect evaporator (23), and a third-effect evaporator (24), characterized in that: The material balance tank (16) and the clean steam generator group (7) are respectively connected to the flash preheater (3) through pipelines, and the flash preheater (3) is connected to the first-effect evaporator (26) through pipelines. At the same time, a double filter (6) is connected to the pipeline combination between the flash preheater (3) and the first-effect evaporator (26). The first-effect evaporator (26) is connected to the second-effect evaporator (23) via a pipe, and the second-effect evaporator (23) is connected to the third-effect evaporator (24) via a pipe. At the same time, the first-effect evaporator (26), the second-effect evaporator (23) and the third-effect evaporator (24) are respectively connected to the first-effect separator (8), the second-effect separator (14) and the third-effect separator (11) via pipes. The first-effect evaporator (26) and the clean steam generator group (7) are connected by a pipeline to a first-effect thermostatic pump (25), and the second-effect evaporator (23) and the third-effect evaporator (24) are connected by a pipeline to an inter-effect preheater (22).

2. The dairy product concentration and separation device according to claim 1, characterized in that: The flash preheater (3) is connected to the spray sterilizer (1) via a pipeline. The spray sterilizer (1) is connected to the flash preheater (3) via a heat insulation pipe (2). The material is pre-steamed by the flash preheater (3) and then enters the spray sterilizer (1) for sterilization. After sterilization, the material is returned to the flash preheater (3) in a heat-insulating state via the heat insulation pipe (2) and then conveyed to the first-effect evaporator (26).

3. The dairy product concentration and separation device according to claim 2, characterized in that: The flash preheater (3) and the spray sterilizer (1) are connected by a sterilizer feed pump (5), and the flash preheater (3) and the first-effect evaporator (26) are connected by a flash discharge pump (4).

4. The dairy product concentration and separation device according to claim 1, characterized in that: A first-effect discharge pump (9) is connected between the pipeline connecting the first-effect evaporator (26) and the second-effect evaporator (23). A second-effect discharge pump (13) is connected between the pipeline connecting the second-effect evaporator (23) and the third-effect evaporator (24). A third-effect circulation pump (10) is connected between the top and bottom of the third-effect evaporator (24) through a pipeline.

5. The dairy product concentration and separation device according to claim 1, characterized in that: The lower part of the triple-effect evaporator (24) is connected by a pipeline to a material discharge pump (12) for discharging concentrated materials.

6. The dairy product concentration and separation device according to claim 1, characterized in that: The material balance tank (16) and the flash preheater (3) are connected by a tube preheater (21) through a pipeline, and the triple-effect separator (11) is connected to the tube preheater (21) through a pipeline.

7. The dairy product concentration and separation apparatus according to claim 6, characterized in that: Both the tube preheater (21) and the flash preheater (3) are connected to the tube condenser (20) via pipelines.

8. The dairy product concentration and separation apparatus according to claim 7, characterized in that: The tube condenser (20) and the tube preheater (21) are also equipped with a condensate tank (19), a condensate pump (18) and a water ring vacuum pump (17).

9. The dairy product concentration and separation device according to claim 1, characterized in that: The material balance tank (16) is connected to a material feed pump (15) via a pipeline.

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