Milk reverse osmosis-vacuum falling film two-stage gradient concentration system

Abstract

The utility model relates to the technical field of dairy product processing, in particular to a milk reverse osmosis-vacuum falling film two-stage gradient concentration system which comprises a shunting cylinder, a processing cylinder is fixedly mounted at the top of the shunting cylinder, a booster pump is fixedly mounted at the center of the top of the processing cylinder, and a liquid injection valve is mounted at the top of the left side of an inner cavity of the processing cylinder in a penetrating manner; the right side of the inner cavity of the treatment cylinder is vertically and fixedly connected with a reverse osmosis membrane, and the center of the bottom of the inner cavity of the treatment cylinder is communicated with a transfer valve. By arranging the booster pump, the reverse osmosis membrane, the transmission bent pipe and the vacuum concentration mechanism, the pressure in the treatment barrel can be increased to be matched with the reverse osmosis membrane, water molecules in milk are separated, the interior of the flow dividing barrel is preset to be in a vacuum state, the boiling point of materials is lowered, and steam is synchronously introduced into a hollow disc and a heat exchange transverse pipe through an auxiliary pipe; and the material flowing through the multi-stage filter screen cylinder is heated and evaporated, so that the purpose of two-stage gradient concentration is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of dairy product processing, in particular to a milk reverse osmosis-vacuum falling film two-stage gradient concentration system. Background Art

[0002] In the process of dairy product processing and manufacturing, for high-protein dairy products such as milk powder or cheese, the milk liquid is generally concentrated, which can effectively increase the solid content in dairy products, reduce the costs of packaging, storage and transportation, and help extend the shelf life of products.

[0003] The basic concentration system generally adopts the form of reverse osmosis technology or vacuum evaporation for treatment, but it cannot perform two-stage gradient concentration treatment at the same time. The reverse osmosis or vacuum evaporation treatment methods are set up separately for concentration processing, increasing the actual floor area of the equipment, and there are certain limitations. To solve the above technical problems, we designed a milk reverse osmosis-vacuum falling film two-stage gradient concentration system. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a milk reverse osmosis-vacuum falling film two-stage gradient concentration system, which has the advantages of two-stage treatment, and solves the problems that the basic concentration system cannot perform two-stage gradient concentration treatment at the same time, the reverse osmosis or vacuum evaporation treatment methods are set up separately for concentration processing, increasing the actual floor area of the equipment, and there are certain limitations.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A milk reverse osmosis-vacuum falling film two-stage gradient concentration system, including a shunt cylinder, a treatment cylinder is fixedly installed at the top of the shunt cylinder, a booster pump is fixedly installed at the center of the top of the treatment cylinder, a liquid injection valve is installed through the top on the left side of the inner cavity of the treatment cylinder, a reverse osmosis membrane is vertically fixedly connected to the right side of the inner cavity of the treatment cylinder, a transfer valve is communicated with the center of the bottom of the inner cavity of the treatment cylinder, a drain valve is communicated with the bottom on the right side of the treatment cylinder, a vacuum concentration mechanism is installed in the inner cavity of the shunt cylinder, and the vacuum concentration mechanism includes a hollow disk, a drain valve and a vacuum pump. Exhaust hoods are fixedly installed on both the left and right sides of the top of the inner cavity of the shunt cylinder.

[0006] Preferably, the number of the vacuum concentration mechanisms is two, and the outer ring of the hollow disk is fixedly connected to the inner wall of the shunt cylinder.

[0007] Preferably, an auxiliary pipe is communicated with the bottom of the inner cavity of the hollow disk, and the bottom of the auxiliary pipe penetrates to the bottom of the shunt cylinder.

[0008] Preferably, a heat exchange horizontal pipe is horizontally communicated with the surface of the hollow disk, and a multi-stage filter screen cylinder is fixedly connected to the surface of the hollow disk.

[0009] Preferably, a transfer pipe is communicated with the bottom of the transfer valve and located inside the shunt cylinder, and one end of the transfer pipe far away from the transfer valve is communicated with the center of the inner cavity of the multi-stage filter screen cylinder.

[0010] Preferably, the number of the heat exchange horizontal pipes is several, and they are evenly distributed on the hollow disc. The heat exchange horizontal pipes penetrate through the multi-stage filter screen cylinder, and the outer diameter of the multi-stage filter screen cylinder is smaller than the inner diameter of the shunt cylinder.

[0011] Preferably, the top of the drain valve is communicated with the bottom of the inner cavity of the shunt cylinder. The surface of the vacuum pump is fixedly connected with the shunt cylinder through bolts, and the air inlet end of the vacuum pump penetrates into the inner cavity of the shunt cylinder.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] By arranging a booster pump, a reverse osmosis membrane, a transfer pipe and a vacuum concentration mechanism, the present utility model has the advantage of secondary concentration. When the booster pump is in working state, the pressure in the treatment cylinder can be increased to cooperate with the reverse osmosis membrane to separate water molecules in the milk liquid. Then, the transfer valve is opened, and the material after primary concentration is introduced into the multi-stage filter screen cylinder through the transfer pipe. At the same time, the vacuum pump is controlled to work, and the inside of the shunt cylinder is preset to a vacuum state, so that the boiling point of the material is reduced. Meanwhile, the steam is introduced into the hollow disc and the heat exchange horizontal pipes through the auxiliary pipe, and the material flowing through the multi-stage filter screen cylinder is heated and evaporated to achieve the purpose of secondary gradient concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structure schematic diagram of the present utility model;

[0015] Figure 2 is a sectional connection structure schematic diagram of the present utility model;

[0016] Figure 3 is a three-dimensional sectional view of the treatment cylinder of the present utility model;

[0017] Figure 4 is a three-dimensional sectional view of the shunt cylinder of the present utility model.

[0018] In the figure: 1. Shunt cylinder; 2. Exhaust hood; 3. Liquid injection valve; 4. Booster pump; 5. Treatment cylinder; 6. Drain valve; 7. Reverse osmosis membrane; 8. Transfer pipe; 9. Transfer valve; 10. Vacuum concentration mechanism; 1001. Multi-stage filter screen cylinder; 1002. Heat exchange horizontal pipe; 1003. Hollow disc; 1004. Auxiliary pipe; 1005. Drain valve; 1006. Vacuum pump. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Please refer to Figures 1 - 4, the milk reverse osmosis-vacuum falling film secondary gradient concentration system includes a shunt cylinder 1. By setting the shunt cylinder 1, an appropriate amount of material can be stored and collected. And it is inclined to avoid material accumulation. Under the action of gravity, the material can naturally flow outward and downward. A treatment cylinder 5 is fixedly installed at the top of the shunt cylinder 1. A booster pump 4 is fixedly installed at the center of the top of the treatment cylinder 5. A liquid injection valve 3 is installed through the top on the left side of the inner cavity of the treatment cylinder 5. By setting the liquid injection valve 3, the requirement of feeding the material into the treatment cylinder 5 can be met. A reverse osmosis membrane 7 is vertically fixedly connected to the right side of the inner cavity of the treatment cylinder 5. A transfer valve 9 is communicated with the center of the bottom of the inner cavity of the treatment cylinder 5. A drain valve 6 is communicated with the bottom on the right side of the treatment cylinder 5. A vacuum concentration mechanism 10 is installed in the inner cavity of the shunt cylinder 1. The vacuum concentration mechanism 10 includes a hollow disk 1003, a drain valve 1005 and a vacuum pump 1006. By setting the drain valve 6 and the drain valve 1005, the water in the treatment cylinder 5 or the shunt cylinder 1 can be conveniently discharged in the open state. Exhaust hoods 2 are fixedly installed on both the left and right sides of the top of the inner cavity of the shunt cylinder 1. By setting the exhaust hoods 2, the steam in the shunt cylinder 1 can be guided;

[0020] Please refer to Figure 2 and Figure 4 , the number of the vacuum concentration mechanisms 10 is two, and the outer ring of the hollow disk 1003 is fixedly connected to the inner wall of the shunt cylinder 1;

[0021] Please refer to Figure 2 and Figure 4 , an auxiliary pipe 1004 is communicated with the bottom of the inner cavity of the hollow disk 1003, and the bottom of the auxiliary pipe 1004 penetrates to the bottom of the shunt cylinder 1. By setting the hollow disk 1003 and the auxiliary pipe 1004, it can be communicated with the heat exchange cross pipe 1002 to facilitate the passage of steam;

[0022] Please refer to Figure 2 and Figure 4 , a heat exchange cross pipe 1002 is horizontally communicated with the surface of the hollow disk 1003. By setting the heat exchange cross pipe 1002, it can be installed through the multi-stage filter screen cylinder 1001, and then can be in good contact with the material to achieve the purpose of uniform temperature rise. The surface of the hollow disk 1003 is fixedly connected with a multi-stage filter screen cylinder 1001. By setting the multi-stage filter screen cylinder 1001, the flowing material can be subjected to multi-stage filtration treatment to ensure the material quality;

[0023] Please refer to Figure 3 and Figure 4 , a transmission elbow 8 is communicated with the bottom of the transfer valve 9 and located in the inner cavity of the shunt cylinder 1. One end of the transmission elbow 8 away from the transfer valve 9 is communicated with the center of the inner cavity of the multi-stage filter screen cylinder 1001. By setting the transmission elbow 8 and the transfer valve 9, when the transfer valve 9 is in the open state, the material in the treatment cylinder 5 can be conveniently guided into the multi-stage filter screen cylinder 1001 through the transmission elbow 8;

[0024] Please refer to Figure 2 and Figure 4 , the number of heat exchange horizontal tubes 1002 is several and they are evenly distributed on the hollow disk 1003. The heat exchange horizontal tubes 1002 penetrate through the multi-stage filter cylinder 1001, and the outer diameter of the multi-stage filter cylinder 1001 is smaller than the inner diameter of the shunt cylinder 1;

[0025] Please refer to Figure 2 and Figure 4 , the top of the drain valve 1005 is communicated with the bottom of the inner cavity of the shunt cylinder 1. The surface of the vacuum pump 1006 is fixedly connected to the shunt cylinder 1 by bolts, and the air inlet end of the vacuum pump 1006 penetrates into the inner cavity of the shunt cylinder 1;

[0026] A sealing block is installed on the top of the exhaust hood 2 by screws, which is used to ensure the vacuum environment in the shunt cylinder 1 in the installed state and facilitate the discharge of steam in the detached state;

[0027] An electric valve is fixedly installed at the air inlet end of the vacuum pump 1006, which is used to close the electric valve to prevent the material liquid from entering the vacuum pump 1006 after the shunt cylinder 1 is placed in a vacuum environment;

[0028] In actual application, the exhaust hood 2 with a sealing block at the top can be replaced by an exhaust hood 2 with an open top, and a solenoid valve is fixedly installed on the surface of the exhaust hood 2 with an open top. When the solenoid valve is closed, it is convenient to form a vacuum environment in the shunt cylinder 1, and when the solenoid valve is opened, it is beneficial to discharge the steam.

[0029] During use, all components are in the initial installation state. First, add the milk liquid into the treatment cylinder 5 through the liquid injection valve 3, close the liquid injection valve 3 and the transfer valve 9, control the booster pump 4 to work, and the air pressure in the treatment cylinder 5 continuously increases. With the cooperation of the reverse osmosis membrane 7, the water molecules in the milk liquid pass through the reverse osmosis membrane 7 to achieve the first concentration treatment. Then control the vacuum pump 1006 to work to form a vacuum negative pressure state in the shunt cylinder 1. First, open the drain valve 6 to discharge the water liquid in the treatment cylinder 5 and restore the treatment cylinder 5 to normal pressure. Then open the transfer valve 9, and under the guiding action of the transfer elbow 8, the material in the treatment cylinder 5 enters the multi-stage filter cylinder 1001. Then close the transfer valve 9. In the vacuum negative pressure environment, the boiling point of the material decreases. At this time, steam is introduced through the auxiliary pipe 1004 at one end. With the cooperation of the hollow disk 1003, the steam flows through the heat exchange horizontal tubes 1002 to exchange heat with the material, and the temperature of the material rises and is evaporated to achieve the second concentration treatment. Finally, open the drain valve 1005 to discharge the material after the second concentration treatment.

[0030] In summary, for the milk reverse osmosis-vacuum falling film two-stage gradient concentration system, by setting up a booster pump 4, a reverse osmosis membrane 7, a transmission elbow 8 and a vacuum concentration mechanism 10, it solves the problem that the basic concentration system cannot perform two-stage gradient concentration treatment at the same time. The two treatment methods of reverse osmosis or vacuum evaporation are set up separately for concentration processing, which increases the actual floor area of the equipment and has certain limitations.

Claims

1. Reverse osmosis-vacuum falling film two-stage gradient concentration system for milk, comprising a shunt cylinder (1), characterized in that: A treatment cylinder (5) is fixedly installed at the top of the flow dividing cylinder (1). A booster pump (4) is fixedly installed at the center of the top of the treatment cylinder (5). A liquid injection valve (3) is installed through the top of the left side of the inner cavity of the treatment cylinder (5). A reverse osmosis membrane (7) is vertically fixedly connected to the right side of the inner cavity of the treatment cylinder (5). A transfer valve (9) is communicated with the center of the bottom of the inner cavity of the treatment cylinder (5). A drain valve (6) is communicated with the bottom of the right side of the treatment cylinder (5). A vacuum concentration mechanism (10) is installed in the inner cavity of the flow dividing cylinder (1). The vacuum concentration mechanism (10) includes a hollow disk (1003), a drain valve (1005) and a vacuum pump (1006). Exhaust hoods (2) are fixedly installed on both the left and right sides of the top of the inner cavity of the flow dividing cylinder (1).

2. The reverse osmosis-vacuum falling film two-stage gradient concentration system for milk according to claim 1, wherein: The number of the vacuum concentration mechanisms (10) is two, and the outer ring of the hollow disk (1003) is fixedly connected to the inner wall of the flow dividing cylinder (1).

3. The reverse osmosis-vacuum falling film two-stage gradient concentration system for milk according to claim 1, wherein: An auxiliary pipe (1004) is communicated with the bottom of the inner cavity of the hollow disk (1003), and the bottom of the auxiliary pipe (1004) penetrates to the bottom of the flow dividing cylinder (1).

4. The reverse osmosis-vacuum falling film two-stage gradient concentration system for milk according to claim 1, wherein: A heat exchange cross pipe (1002) is horizontally communicated with the surface of the hollow disk (1003), and a multi-stage filter screen cylinder (1001) is fixedly connected to the surface of the hollow disk (1003).

5. The reverse osmosis-vacuum falling film two-stage gradient concentration system for milk according to claim 4, characterized in that: The bottom of the transfer valve (9) and inside the flow dividing cylinder (1) is communicated with a transmission elbow (8), and one end of the transmission elbow (8) away from the transfer valve (9) is communicated with the center of the inner cavity of the multi-stage filter screen cylinder (1001).

6. The milk reverse osmosis-vacuum falling film two-stage gradient concentration system according to claim 4, characterized in that: The number of the heat exchange cross pipes (1002) is several and they are evenly distributed on the hollow disk (1003). The heat exchange cross pipes (1002) penetrate through the multi-stage filter screen cylinder (1001), and the outer diameter of the multi-stage filter screen cylinder (1001) is smaller than the inner diameter of the flow dividing cylinder (1).

7. The milk reverse osmosis-vacuum falling film two-stage gradient concentration system according to claim 1, wherein: The top of the drain valve (1005) is communicated with the bottom of the inner cavity of the flow dividing cylinder (1). The surface of the vacuum pump (1006) is fixedly connected to the flow dividing cylinder (1) through bolts, and the air inlet end of the vacuum pump (1006) penetrates into the inner cavity of the flow dividing cylinder (1).

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