A dairy film sterilization apparatus

Abstract

The utility model discloses a dairy product membrane sterilization equipment, including membrane sterilization equipment and skimmed milk jar, emulsion delivery pipeline communicates with skimmed milk jar, the input end of skimmed milk jar still has nitrogen gas pipeline, and the output of skimmed milk jar communicates through material valve and separation jar, and the top of separation jar is connected with balance pipeline, and balance pipeline communicates with the top and bottom of nitrogen cylinder through two branch pipes respectively, and the material of separation jar output enters membrane sterilization equipment through unloading valve. The dairy product membrane sterilization equipment, in the process of exhausting material, by first nitrogen gas, the material in pipeline is pushed out, balance the pressure in skimmed milk jar simultaneously, make its smooth, the application sets up separation jar in the process of vacuumizing, and the gas in separation jar is extracted, not only can reduce the air content in separation jar emulsion, but also can detect whether pipeline exists sealing problem.

Description

Technical Field

[0001] This utility model relates to the technical field of dairy product production equipment, specifically a membrane sterilization device for dairy product processing. Background Technology

[0002] In dairy processing, membrane sterilization technology, with its core advantages of low-temperature operation and preservation of nutrition and flavor, has become a key process to replace traditional high-temperature sterilization and is widely used in the production of products such as milk, yogurt, cheese, and whey protein.

[0003] Raw milk is separated (e.g., by centrifugation) to obtain skim milk. The skim milk is first temporarily stored in a skim milk tank, where it is still in an unsterilized state (and may contain microorganisms). The temporarily stored skim milk is pumped from the storage tank into a membrane sterilization system (e.g., microfiltration or ultrafiltration membrane), where microorganisms and some impurities are removed through the membrane's retention effect. The sterilized skim milk then enters subsequent processes (e.g., standardization, sterilization, filling, etc.).

[0004] When the skim milk tank is empty, water is added to the skim milk tank to push out the material in the pipeline. After the material is completely pushed out, the machine is prepared to stop when the material in the balance tank stops. During this process, the material mixes with the water, resulting in material waste. At the same time, the pipeline is not tightly sealed, allowing air to enter the interior. Oxygen will accelerate the spoilage of dairy products. It is difficult to check the airtightness of the pipeline connection. Therefore, this application is made to improve the existing technology. Utility Model Content

[0005] The purpose of this invention is to provide a dairy product membrane sterilization device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A membrane sterilization device for dairy products includes a membrane sterilization device and a skim milk tank. An emulsion delivery pipeline is connected to the skim milk tank. The input end of the skim milk tank is also connected to a nitrogen pipeline. The output end of the skim milk tank is connected to a separation tank through a material valve. The top of the separation tank is connected to a balance pipeline. The balance pipeline is connected to the top and bottom of a nitrogen cylinder through two branch pipes, respectively. The material output from the separation tank enters the membrane sterilization device through a discharge valve.

[0008] As a further improvement of this utility model: nitrogen exhaust pipeline and nitrogen replacement pipeline are respectively installed on the two branch pipes, and valves are respectively installed on the nitrogen exhaust pipeline and nitrogen replacement pipeline for control.

[0009] As a further improvement of this utility model: a one-way valve is provided at the connection between the two branch pipes and the balance pipeline. The installation of the one-way valve allows nitrogen from the top of the nitrogen cylinder to be input from the branch pipe to the balance pipeline, and nitrogen in the balance pipeline is transported to the bottom of the nitrogen cylinder through another branch pipe.

[0010] As a further improvement of this utility model: the balance pipeline is also equipped with a vacuum pipeline through a three-way valve. The other end of the vacuum pipeline is connected to a nitrogen cylinder. A one-way valve is set at the connection between the vacuum pipeline and the nitrogen cylinder. Nitrogen can only enter the nitrogen cylinder through the vacuum pipeline and cannot be discharged. A vacuum pump is also installed on the vacuum pipeline.

[0011] As a further improvement of this invention, the nitrogen cylinder is equipped with a sensor for detecting oxygen content.

[0012] As a further improvement of this utility model, the skim milk tank, the emulsion delivery pipeline and the nitrogen pipeline are connected by a three-way valve.

[0013] As a further embodiment of this utility model: the skim milk tank includes a tank body, the inlet and outlet of the tank body are connected to other pipelines through telescopic pipes, and mounting seats are provided on both sides of the skim milk tank. The mounting seats are fixed to the carrier by a weighing sensor, and the weight change of the skim milk tank is monitored by the weighing sensor.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this dairy product membrane sterilization equipment, during the process of emptying the skim milk tank, nitrogen gas is first introduced to push the material out of the pipeline and balance the pressure inside the skim milk tank to ensure smooth material discharge. In this application, a separation tank is set up to extract the gas inside the separation tank during the vacuum process, which not only reduces the air content in the emulsion in the separation tank, but also detects whether there are any sealing problems in the pipeline. Attached Figure Description

[0016] Figure 1 A schematic diagram of a membrane sterilization device for dairy products;

[0017] Figure 2 This is a schematic diagram of the structure of a skim milk tank in a dairy product membrane sterilization device.

[0018] In the diagram: 1. Membrane sterilization equipment; 2. Emulsion delivery pipeline; 3. Skim milk tank; 4. Three-way valve; 5. Nitrogen pipeline; 6. Feed valve; 7. Vacuuming pipeline; 8. Separation tank; 9. Discharge valve; 10. Balancing pipeline; 11. Nitrogen replacement pipeline; 12. Nitrogen cylinder; 13. Valve; 14. Nitrogen exhaust pipeline; 15. Weighing sensor. Detailed Implementation

[0019] Please see Figure 1 and 2 In this embodiment of the invention, a membrane sterilization device for dairy products includes a membrane sterilization device 1 and a skim milk tank 3. An emulsion conveying pipeline 2 is connected to the skim milk tank 3. The input end of the skim milk tank 3 is also connected to a nitrogen pipeline 5. The output end of the skim milk tank 3 is connected to a separation tank 8 via a material valve 6. A balance pipeline 10 is connected to the top of the separation tank 8. The balance pipeline 10 is connected to the top and bottom of a nitrogen cylinder 12 via two branch pipes. The material output from the separation tank 8 enters the membrane sterilization device 1 through a discharge valve 9. This application uses nitrogen to push out the material inside the pipeline, and then cleans it with water. The addition of the nitrogen pipeline 5 to the original technology ensures that nitrogen, with its stable chemical properties, will not react with the emulsion. The material inside the skim milk tank 3 needs to be... When the milk is drained, no new material will enter the skim milk tank 3. To prevent air from contacting the emulsion and causing it to deteriorate, the skim milk tank 3 is sealed. Under air pressure, it is difficult to drain the material inside the skim milk tank 3. Therefore, nitrogen is introduced, which also facilitates the drainage of the skim milk tank 3. The skim milk tank 3 and the membrane sterilization equipment 1 are connected by pipelines. The connection between the membrane sterilization equipment 1 and the pipelines cannot guarantee 100% sealing. Air may enter the emulsion and affect the shelf life of the product. This application performs gas-liquid separation before the emulsion enters the membrane sterilization equipment 1. The emulsion enters the fully enclosed separation tank 8. The nitrogen cylinder 12 stores nitrogen. During the feeding process, nitrogen will enter the separation tank 8 in an appropriate amount to keep the feeding smooth.

[0020] In a preferred embodiment, a nitrogen exhaust line 14 and a nitrogen replacement line 11 are respectively installed on the two branch pipes. Valves 13 are respectively installed on the nitrogen exhaust line 14 and the nitrogen replacement line 11 for control. The nitrogen in the nitrogen cylinder 12 can be replaced after a period of use.

[0021] In a preferred embodiment, one-way valves are respectively installed at the connection points of the two branch pipes and the balance line 10. The installation of the one-way valves allows the nitrogen gas at the top of the nitrogen cylinder 12 to be input from the branch pipes to the balance line 10, and the nitrogen gas in the balance line 10 is transported to the bottom of the nitrogen cylinder 12 through the other branch pipe. Gas enters from the bottom of the nitrogen cylinder 12 and nitrogen gas exits from the top of the nitrogen cylinder 12, which has the function of gas separation. If air enters the pipeline, the air will accumulate at the bottom of the nitrogen cylinder 12 due to its density, ensuring that the nitrogen gas entering the separation tank 8 is separated.

[0022] In a preferred embodiment, the balancing line 10 is also equipped with a vacuum line 7 via a three-way valve. The other end of the vacuum line 7 is connected to a nitrogen cylinder 12. A one-way valve is provided at the connection between the vacuum line 7 and the nitrogen cylinder 12, so that nitrogen can only enter the nitrogen cylinder 12 through the vacuum line 7 and cannot be discharged. A vacuum pump is also installed on the vacuum line 7. When the emulsion enters the separation tank 8, a vacuum test is performed. The vacuum test can completely extract the gas inside the separation tank 8, including nitrogen and other gases in the emulsion, and recover them into the separation tank 8.

[0023] In a preferred embodiment, the nitrogen cylinder 12 is equipped with a sensor for detecting oxygen content. The sensor detects the gas composition inside the separation tank 8. When the oxygen content is detected to be high, the nitrogen inside the nitrogen cylinder 12 is replaced, and the airtightness of the pipeline is checked to protect the quality of the emulsion.

[0024] In a preferred embodiment, the skim milk tank 3, the emulsion delivery line 2, and the nitrogen line 5 are connected by a three-way valve 4.

[0025] In a preferred embodiment, the skim milk tank 3 includes a tank body 301. The inlet and outlet of the tank body 301 are connected to other pipelines via telescopic pipes 302. Mounting seats 303 are provided on both sides of the skim milk tank 3. The mounting seats 303 are fixed to the carrier by weighing sensors 15. The weighing sensors 15 monitor the weight change of the skim milk tank 3. Milk contains protein and fat, which have a certain viscosity. Contact sensors require contact with the milk, thus necessitating frequent cleaning to avoid milk contamination. Non-contact sensors are easily affected by milk residue adhering to the tank walls. To address this issue, this application uses a weighing sensor 15 to detect and determine whether the emulsion or cleaning liquid has been completely drained. The weighing sensor 15 first measures the weight of the skim milk tank 3 when it is empty. The weight of the emulsion = the density of the emulsion × the volume of the liquid. Therefore, the volume of the liquid = the weight of the emulsion ÷ the density of the emulsion. The density of the emulsion is a fixed quantity, and the weight of the emulsion is measured by the weighing sensor 15. The volume of the liquid in the skim milk tank 3 can be calculated using the following formula: Volume of liquid = value measured by the weighing sensor 15 - weight of skim milk tank 3 ÷ density of emulsion. This allows us to determine whether the emulsion has been completely drained.

[0026] It should be noted that all the above embodiments belong to the same utility model concept, and the descriptions of each embodiment have different focuses. Where the description in a particular embodiment is not detailed, please refer to the description in other embodiments.

[0027] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A membrane sterilization device for dairy products, comprising a membrane sterilization device (1) and a skim milk tank (3), wherein an emulsion delivery pipeline (2) is connected to the skim milk tank (3), characterized in that, The input end of the skim milk tank (3) is also connected to a nitrogen pipeline (5). The output end of the skim milk tank (3) is connected to the separator (8) through a material valve (6). The top of the separator (8) is connected to a balance pipeline (10). The balance pipeline (10) is connected to the top and bottom of the nitrogen cylinder (12) through two branch pipes respectively. The material output from the separator (8) enters the membrane sterilization equipment (1) through the discharge valve (9).

2. The dairy product membrane sterilization device according to claim 1, characterized in that, Nitrogen exhaust line (14) and nitrogen replacement line (11) are respectively installed on the two branch pipes, and valves (13) are respectively installed on the nitrogen exhaust line (14) and nitrogen replacement line (11) for control.

3. The dairy product membrane sterilization device according to claim 2, characterized in that, One-way valves are installed at the connection points of the two branch pipes and the balance line (10). By installing the one-way valves, nitrogen gas at the top of the nitrogen cylinder (12) is input from the branch pipe to the balance line (10), and nitrogen gas in the balance line (10) is transported to the bottom of the nitrogen cylinder (12) through another branch pipe.

4. A dairy product membrane sterilization device according to any one of claims 1-3, characterized in that, The balance line (10) is also equipped with a vacuum line (7) through a three-way valve. The other end of the vacuum line (7) is connected to the nitrogen cylinder (12). A one-way valve is provided at the connection between the vacuum line (7) and the nitrogen cylinder (12). Nitrogen can only enter the nitrogen cylinder (12) through the vacuum line (7) and cannot be discharged. A vacuum pump is also installed on the vacuum line (7).

5. A dairy product membrane sterilization device according to claim 4, characterized in that, The nitrogen cylinder (12) is equipped with a sensor for detecting oxygen content.

6. The dairy product membrane sterilization device according to claim 1, characterized in that, The skim milk tank (3), the emulsion delivery line (2) and the nitrogen line (5) are connected by a three-way valve (4).

7. A dairy product membrane sterilization device according to claim 1, characterized in that, The skim milk tank (3) includes a tank body (301). The inlet and outlet of the tank body (301) are connected to other pipelines through a telescopic pipe (302). Mounting seats (303) are provided on both sides of the skim milk tank (3). The mounting seats (303) are fixed to the carrier through a weighing sensor (15). The weight change of the skim milk tank (3) is monitored by the weighing sensor (15).

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