A device system for online regulation of brine concentration

Abstract

The utility model belongs to the field of milk processing technology relates to a device system of brine concentration on -line regulation and control, including pure water line, concentrated brine jar and brine discharge deployment line, and at least be provided with the flow regulation mixing valve, power pump and on -line conductivity instrument that connect gradually on brine discharge deployment line, wherein, the output of pure water line and the output of concentrated brine jar are independently connected to the input of flow regulation mixing valve respectively, flow regulation mixing valve and on -line conductivity instrument are independently electrically connected to PLC controller respectively. The device system provided by the utility model realizes the on -line regulation and control of brine concentration, does not need manual switching brine jar or off -line preparation, reduces the process interruption time, improves the elution efficiency, reduces the equipment investment and maintenance cost, is favorable to large -scale popularization and application.

Description

Technical Field

[0001] This utility model belongs to the field of dairy processing technology and relates to a device system for online control of brine concentration. Background Technology

[0002] In the lactoferrin chromatography elution process of the dairy deep processing industry, after lactoferrin is adsorbed by chromatography, lactoperoxidase and lactoferrin need to be eluted online using saline of different concentrations. This step has strict requirements on the accuracy of saline concentration and the efficiency of preparation, and is a key step to ensure the quality of subsequent products and the continuity of production.

[0003] Currently, the conventional chemical system solution used in the industry is as follows: multiple brine tanks are configured according to the different brine concentrations required for elution, and brine of the corresponding concentration is pre-prepared in each tank; after lactoferrin has completed adsorption, the staff needs to manually switch through pipelines and valves to output the brine from different brine tanks to the chromatography system to meet the elution requirements at different stages.

[0004] However, the above-mentioned solution has three major technical problems: First, the equipment configuration is redundant, requiring the investment of multiple brine tanks and supporting pipelines and valves, which not only increases the initial equipment investment cost, but also occupies too much production space, and the workload and cost of subsequent equipment maintenance and cleaning also increase significantly. Second, it relies on manual operation. Manually switching valves is prone to inconsistent brine concentration due to operation timing deviations and switching errors. Moreover, it is difficult to avoid errors in manually adjusting the brine concentration, which can easily lead to incomplete or over-elution, affecting the separation effect of lactoperoxidase and lactoferrin and product quality. Third, the process has poor flexibility. The pre-prepared fixed concentration brine cannot be dynamically adjusted according to the real-time needs during the chromatography elution process, making it difficult to achieve gradient elution. It is not adaptable to different batches and qualities of milk raw materials, which limits the applicability of the production process. At the same time, the switching of multiple tanks and offline preparation will interrupt the production process and reduce the overall production efficiency.

[0005] Therefore, it is evident that providing a device system for online control of brine concentration, eliminating the need for manual switching of brine tanks or offline preparation, reducing process downtime, improving elution efficiency, and lowering equipment investment and maintenance costs, has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a device system for online control of brine concentration, which enables online control of brine concentration without the need for manual switching of brine tanks or offline preparation, thereby reducing process interruption time, improving elution efficiency, and lowering equipment investment and maintenance costs.

[0007] To achieve the objective of this utility model, the following technical solution is adopted:

[0008] This utility model provides a device system for online control of brine concentration, including a pure water line, a concentrated brine tank, and a brine discharge and mixing line, wherein the brine discharge and mixing line is equipped with at least a flow regulating mixing valve, a power pump, and an online conductivity meter connected in sequence.

[0009] The output terminals of the pure water line and the concentrated brine tank are independently connected to the input terminal of the flow regulating mixing valve; the flow regulating mixing valve and the online conductivity meter are independently electrically connected to the PLC controller.

[0010] The device system provided by this utility model utilizes a pure water line to supply pure water to the brine discharge and mixing line, and a concentrated brine tank to supply high-concentration brine to the brine discharge and mixing line. Simultaneously, based on real-time detection by an online conductivity meter and closed-loop regulation by a PLC controller, concentration errors are eliminated, achieving online control of brine concentration. This eliminates the need for manual switching of brine tanks or offline preparation, reducing process downtime, improving elution efficiency, ensuring that the concentration of each batch of brine meets the preset standard, and avoiding incomplete elution or product loss due to concentration deviations. It is adaptable to the elution needs of different milk raw materials, and only one concentrated brine tank is needed to replace the existing 2-3 brine tanks, reducing the number of devices by more than 50%, significantly lowering initial equipment investment and maintenance costs.

[0011] Preferably, the pure water line is provided with a cooling plate heat exchanger, a first shut-off valve, a first butterfly valve, and a second butterfly valve connected in sequence.

[0012] Preferably, the output end of the second butterfly valve is connected to the input end of the flow regulating mixing valve.

[0013] Preferably, a second shut-off valve is provided in parallel between the first butterfly valve and the second butterfly valve.

[0014] Preferably, the volume of the concentrated brine tank is ≥5L, and the concentration of the stored brine is 10-26wt%.

[0015] Preferably, the flow regulating mixing valve is a three-way valve.

[0016] Preferably, the power pump includes any one of a centrifugal pump, an axial flow pump, a mixed flow pump, a vortex pump, or a jet pump.

[0017] Preferably, the output terminal of the online conductivity meter is provided with two butterfly valves in parallel, namely a third butterfly valve and a fourth butterfly valve.

[0018] Preferably, the output end of the third butterfly valve is connected to a chromatography column.

[0019] Preferably, the output end of the fourth butterfly valve is connected to a floor drain.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The device system provided by this utility model utilizes a pure water line to supply pure water to the brine discharge and mixing line, and a concentrated brine tank to supply high-concentration brine to the brine discharge and mixing line. Simultaneously, based on real-time detection by an online conductivity meter and closed-loop regulation by a PLC controller, concentration errors are eliminated, achieving online control of brine concentration. This eliminates the need for manual switching of brine tanks or offline preparation, reducing process downtime, improving elution efficiency, ensuring that the concentration of each batch of brine meets the preset standard, and avoiding incomplete elution or product loss due to concentration deviations. It is adaptable to the elution needs of different milk raw materials, and only one concentrated brine tank is needed to replace the existing 2-3 brine tanks, reducing the number of devices by more than 50%, significantly lowering initial equipment investment and maintenance costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the device system structure for online control of saline concentration provided in Example 1.

[0023] Wherein: 10-Pure water line; 11-Cooling plate heat exchanger; 12-First shut-off valve; 13-First butterfly valve; 14-Second butterfly valve; 15-Second shut-off valve; 20-Concentrated brine tank; 30-Brine discharge and mixing line; 31-Flow regulating mixing valve; 32-Power pump; 33-Online conductivity meter; 34-PLC controller; 35-Third butterfly valve; 36-Chromatography column; 37-Fourth butterfly valve; 38-Floor drain. Detailed Implementation

[0024] It should be understood that in the description of this utility model, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] One embodiment of this utility model provides a device system for online control of brine concentration, including a pure water line, a concentrated brine tank, and a brine discharge and mixing line, wherein the brine discharge and mixing line is provided with at least a flow regulating mixing valve, a power pump, and an online conductivity meter connected in sequence.

[0027] The output terminals of the pure water line and the concentrated brine tank are independently connected to the input terminal of the flow regulating mixing valve; the flow regulating mixing valve and the online conductivity meter are independently electrically connected to the PLC controller.

[0028] The device system provided by this utility model utilizes a pure water line to supply pure water to the brine discharge and mixing line, and a concentrated brine tank to supply high-concentration brine to the brine discharge and mixing line. Simultaneously, based on real-time detection by an online conductivity meter and closed-loop regulation by a PLC controller, concentration errors are eliminated, achieving online control of brine concentration. This eliminates the need for manual switching of brine tanks or offline preparation, reducing process downtime, improving elution efficiency, ensuring that the concentration of each batch of brine meets the preset standard, and avoiding incomplete elution or product loss due to concentration deviations. It is adaptable to the elution needs of different milk raw materials, and only one concentrated brine tank is needed to replace the existing 2-3 brine tanks, reducing the number of devices by more than 50%, significantly lowering initial equipment investment and maintenance costs.

[0029] In some embodiments, the pure water line is provided with a cooling plate heat exchanger, a first shut-off valve, a first butterfly valve, and a second butterfly valve connected in sequence.

[0030] This invention utilizes a pure water line to provide a constant flow of pure water. The water temperature is reduced from room temperature (20-30℃) to below 4℃ by a cooling plate heat exchanger to meet the protein elution temperature requirements. The pure water flow and delivery path are controlled by valves.

[0031] In some embodiments, the output of the second butterfly valve is connected to the input of the flow regulating mixing valve.

[0032] In some embodiments, a second shut-off valve is provided in parallel between the first butterfly valve and the second butterfly valve.

[0033] In some embodiments, the volume of the concentrated brine tank is ≥5L, for example, it can be 5L, 6L, 7L, 8L, 9L, 10L, 11L, 12L, 13L, 14L or 15L, and the concentration of the stored brine is 10-26wt%, for example, it can be 10wt%, 12wt%, 14wt%, 16wt%, 18wt%, 20wt%, 22wt%, 24wt% or 26wt%, but it is not limited to the listed values, and other unlisted values ​​within this range are also applicable.

[0034] In some embodiments, the flow regulating mixing valve is a three-way valve.

[0035] In some embodiments, the power pump includes any one of a centrifugal pump, an axial flow pump, a mixed flow pump, a vortex pump, or a jet pump.

[0036] In some embodiments, two butterfly valves are connected in parallel at the output terminal of the online conductivity meter, namely a third butterfly valve and a fourth butterfly valve.

[0037] In some embodiments, the output of the third butterfly valve is connected to a chromatography column.

[0038] In some embodiments, the output end of the fourth butterfly valve is connected to a floor drain.

[0039] This invention achieves flexible switching between "qualified feed / unqualified discharge" through the dual butterfly valve setup of the third and fourth butterfly valves. Specifically, the PLC controller compares the real-time conductivity with the preset standard value. If it meets the standard, the third butterfly valve is opened and the fourth butterfly valve is closed, allowing the mixture to enter the chromatography column. If it does not meet the standard, the third butterfly valve is closed and the fourth butterfly valve is opened, allowing the mixture to drain into the floor drain. At the same time, the flow rate is controlled to adjust the opening of the mixing valve to correct the concentration until the standard is met.

[0040] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0041] Example 1

[0042] This embodiment provides a device system for online control of saline concentration, such as... Figure 1 As shown, the device system includes a pure water line 10, a concentrated brine tank 20, and a brine discharge and mixing line 30. The brine discharge and mixing line 30 is equipped with at least one flow regulating mixing valve 31, a power pump 32, and an online conductivity meter 33, connected in sequence. The output terminals of the pure water line 10 and the concentrated brine tank 20 are independently connected to the input terminal of the flow regulating mixing valve 31. The flow regulating mixing valve 31 and the online conductivity meter 33 are independently electrically connected to a PLC controller 34.

[0043] In this embodiment, the pure water line 10 is equipped with a cooling plate heat exchanger 11, a first shut-off valve 12, a first butterfly valve 13, and a second butterfly valve 14 connected in sequence. The output end of the second butterfly valve 14 is connected to the input end of the flow regulating mixing valve 31, and a second shut-off valve 15 is connected in parallel between the first butterfly valve 13 and the second butterfly valve 14. The concentrated brine tank 20 has a volume of 10L and stores brine with a concentration of 15wt%. The flow regulating mixing valve 31 is a three-way valve. The power pump 32 is a centrifugal pump. The output end of the online conductivity meter 33 is connected in parallel with two butterfly valves, namely a third butterfly valve 35 and a fourth butterfly valve 37. The output end of the third butterfly valve 35 is connected to a chromatography column 36, and the output end of the fourth butterfly valve 37 is connected to a floor drain 38.

[0044] Application Example 1

[0045] This application example uses the device system provided in Example 1 to control the concentration of brine online, including the following steps:

[0046] (1) Database and program preset: Establish a database of brine elution concentration index for different products, and program the standard values ​​of conductivity corresponding to the concentration into the PLC controller 34 to realize the rapid call of product parameters.

[0047] (2) Automatic control during the production stage, specifically:

[0048] (2.1) Start-up phase: According to the pre-selected products, the PLC controller 34 automatically controls the valve status, opens the first shut-off valve 12, the first butterfly valve 13, the second butterfly valve 14, the flow regulating mixing valve 31, and the fourth butterfly valve 37, and closes the second shut-off valve 15 and the third butterfly valve 35 to ensure that the pipeline is unobstructed and that the initial mixture does not enter the chromatography column 36.

[0049] (2.2) Mixing and regulating stage: Pure water line 10 provides pure water at a constant flow rate. The water temperature is reduced from room temperature (25°C) to below 4°C by cooling plate heat exchanger 11. The cooled pure water and concentrated brine are mixed online at flow regulating mixing valve 31. Power pump 32 delivers the mixture to online conductivity meter 33 and transmits real-time conductivity data to PLC controller 34 at the same time.

[0050] (2.3) Closed-loop feedback stage: The PLC controller 34 compares the real-time conductivity with the preset standard value. If it meets the standard, the third butterfly valve 35 is opened and the fourth butterfly valve 37 is closed, so that the mixture enters the chromatography column 36. If it does not meet the standard, the third butterfly valve 35 is closed and the fourth butterfly valve 37 is opened, so that the mixture is discharged into the floor drain 38. At the same time, the flow rate is controlled to adjust the opening of the mixing valve 31 to correct the concentration until the standard is met.

[0051] (3) Flushing stage control: After production is completed, the PLC controller 34 controls the circuit to connect to pure water, flushing the residual salt water in the pipeline. The online conductivity meter 33 monitors the purity of the flushing water in real time. Flushing stops after the standard is met (≤5μS / cm).

[0052] Therefore, the device system provided by this utility model utilizes a pure water line to supply pure water to the brine discharge and mixing line, and a concentrated brine tank to supply high-concentration brine to the brine discharge and mixing line. Simultaneously, based on real-time detection by an online conductivity meter and closed-loop regulation by a PLC controller, concentration errors are eliminated, achieving online control of brine concentration. This eliminates the need for manual switching of brine tanks or offline preparation, reducing process interruption time, improving elution efficiency, ensuring that the concentration of each batch of brine meets the preset standard, and avoiding incomplete elution or product loss due to concentration deviations. It is adaptable to the elution needs of different milk raw materials, and only one concentrated brine tank is needed to replace the existing 2-3 brine tanks, reducing the number of devices by more than 50%, significantly lowering initial equipment investment and maintenance costs.

[0053] The above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model fall within the protection and disclosure scope of the present utility model.

Claims

1. A device system for online control of saline concentration, characterized in that, It includes a pure water line, a concentrated brine tank, and a brine discharge and mixing line, and the brine discharge and mixing line is equipped with at least a flow regulating mixing valve, a power pump, and an online conductivity meter connected in sequence. The output terminals of the pure water line and the concentrated brine tank are independently connected to the input terminal of the flow regulating mixing valve; the flow regulating mixing valve and the online conductivity meter are independently electrically connected to the PLC controller.

2. The device system for online control of saline concentration according to claim 1, characterized in that, The pure water line is equipped with a cooling plate heat exchanger, a first shut-off valve, a first butterfly valve, and a second butterfly valve connected in sequence.

3. The device system for online control of saline concentration according to claim 2, characterized in that, The output end of the second butterfly valve is connected to the input end of the flow regulating mixing valve.

4. The device system for online control of saline concentration according to claim 2 or 3, characterized in that, A second shut-off valve is connected in parallel between the first butterfly valve and the second butterfly valve.

5. The device system for online control of brine concentration according to any one of claims 1-3, characterized in that, The volume of the concentrated brine tank is ≥5L, and the concentration of the brine stored is 10-26wt%.

6. The device system for online control of saline concentration according to any one of claims 1-3, characterized in that, The flow regulating mixing valve is a three-way valve.

7. The device system for online control of brine concentration according to any one of claims 1-3, characterized in that, The power pump includes any one of centrifugal pump, axial flow pump, mixed flow pump, vortex pump, or jet pump.

8. The device system for online control of saline concentration according to any one of claims 1-3, characterized in that, The output terminal of the online conductivity meter is equipped with two butterfly valves in parallel, namely the third butterfly valve and the fourth butterfly valve.

9. The device system for online control of brine concentration according to claim 8, characterized in that, The output end of the third butterfly valve is connected to a chromatography column.

10. The device system for online control of brine concentration according to claim 8, characterized in that, The output end of the fourth butterfly valve is connected to a floor drain.

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