Modular disposable ultrafiltration system

Abstract

A modular disposable ultrafiltration system comprises a circulation tank (1), a first pump body (2), a second pump body (3), an ultrafiltration membrane assembly (4) and a receiving container (5). Through reasonable pipeline design, when the system is started, a first pump body conveys raw material liquid from a circulating tank to an ultrafiltration membrane assembly, and the pump speed and pressure are adjusted by PLC control system software according to data of each sensor; when the raw material liquid passes through the ultrafiltration membrane assembly, macromolecular substances are intercepted, and the clean liquid enters the receiving container through the membrane, and directly collects the permeate liquid or circularly flows under the continuous operation of the second pump body. According to the scheme, a modularized disposable pipeline structure is adopted, the occupied space is reduced, disposable consumables can be replaced in time, functional configuration of various membrane bags and pumps is met, and different experiment or production requirements are met; moreover, various parameters are set and adjusted by the PCL control system according to sensor data, the filtering process is optimized, and the inspection requirements of different production batches are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of ultrafiltration systems, especially a kind of modular disposable ultrafiltration system, belong to ultrafiltration technical field. BACKGROUND

[0002] Disposable ultrafiltration technology is mainly used for water treatment and separation, which removes suspended solids, colloids, bacteria, viruses and other macromolecular substances in water by using semi-permeable membranes. However, the existing disposable ultrafiltration system structure has limitations and constraints, and the specific defects are: 1) The traditional ultrafiltration system structure not only requires high initial investment (including expensive equipment, installation and commissioning costs, etc.), but also has frequent cleaning verification, complex program maintenance and regular replacement of consumables, which increases operating costs to some extent; 2) The volume of the traditional ultrafiltration system structure is large, which occupies a lot of laboratory space, is not suitable for small laboratories or mobile use, and has complex operation and low work efficiency; 3) The related control system software of the traditional ultrafiltration system structure has too many unnecessary functions, which may not be able to quickly process and feedback real-time data, affecting operation efficiency and accuracy, and may also have deficiencies in data integrity and traceability; 4) The related parameter adjustment of the traditional ultrafiltration system structure is cumbersome, and it is difficult to flexibly adjust the flow, pressure and other key parameters according to different experimental requirements.

[0003] The present inventors have proposed a modular disposable ultrafiltration system to overcome the above problems comprehensively. SUMMARY

[0004] The purpose of the utility model is to solve the above problems, provide a kind of modular disposable ultrafiltration system, to solve the problem of large floor area, weak functionality, poor flexibility, low safety and high cost, improve use performance.

[0005] The technical solution of the utility model is: a kind of modular disposable ultrafiltration system, including circulating tank, first pump body, second pump body, ultrafiltration membrane assembly and receiving container, its characteristics are: the liquid outlet of the circulating tank is connected with the liquid inlet of the ultrafiltration membrane assembly through the first disposable pipeline, a first pump body, a flow meter and an output valve are sequentially arranged on the first disposable pipeline; the liquid supplementing end of the circulating tank is connected with the second disposable pipeline, a second pump body and an input valve are arranged on the second disposable pipeline; the backflow end of the circulating tank is connected with the backflow end of the ultrafiltration membrane assembly through the third disposable pipeline, a normally closed valve, a first sensor, a backflow valve and a second sensor are sequentially arranged on the third disposable pipeline; the liquid outlet of the ultrafiltration membrane assembly is connected with the receiving container through the fourth disposable pipeline, a third sensor and a fourth sensor are arranged on the fourth disposable pipeline.

[0006] Further, the modular disposable ultrafiltration system, wherein: a first disposable branch pipe is arranged on the first disposable pipe between the flow meter and the output valve.

[0007] Further, the modular disposable ultrafiltration system, wherein: a first disposable branch pipe is arranged on the first disposable pipe between the flow meter and the output valve.

[0008] Further, the modular disposable ultrafiltration system, wherein: a second disposable branch pipe is arranged on the third disposable pipe between the backflow valve and the second sensor.

[0009] Further, the modular disposable ultrafiltration system, wherein: a second disposable branch pipe is arranged on the third disposable pipe between the backflow valve and the second sensor.

[0010] Further, the modular disposable ultrafiltration system, wherein: the first pump body is a circulation pump.

[0011] Further, the modular disposable ultrafiltration system, wherein: the second pump body is a liquid supplement pump.

[0012] Further, the modular disposable ultrafiltration system, wherein: the flow meter, the first sensor, the second sensor, the third sensor and the fourth sensor are integratedly connected to a PCL control system.

[0013] Compared with the prior art, after the technical scheme of the present application is adopted, the modular disposable pipe structure is adopted, so that the overall structure of the disposable ultrafiltration system is small and compact, the occupied space is reduced, the disposable consumables can be replaced in time, the functional configuration of various membrane packages and pumps can be met, different experimental or production requirements can be adapted, and moreover, the PCL control system sets and adjusts various parameters according to sensor data, not only can the filtering process be optimized, but also the data acquisition, processing, visualization and analysis modules can be integrated, so as to meet the real-time monitoring and analysis requirements of users on different production batches. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of the present application;

[0015] Figure 2 is a system framework diagram of the present application;

[0016] Figure 3 is a safety verification flowchart of the present application.

[0017] The meanings of the labels in the figures are as follows: 1-Circulation tank, 2-First pump body, 3-Second pump body, 4-Ultrafiltration membrane module, 5-Receiving container, 6-First disposable pipeline, 7-Second disposable pipeline, 8-Third disposable pipeline, 9-Fourth disposable pipeline, 10-First disposable branch pipeline, 11-Second disposable branch pipeline, 12-Output valve, 13-Input valve, 14-Normally closed valve, 15-Return valve, 16-First branch valve, 17-Second branch valve, 18-Flow meter, 19-First sensor, 20-Second sensor, 21-Third sensor, 22-Fourth sensor. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings to make it easier to understand and master. The components involved, such as the circulation tank 1, pump body, receiving container 5, and various sensors, are all commonly used by those skilled in the art, and there are no special requirements for them in this application.

[0019] like Figure 1 As shown, this utility model provides a modular disposable ultrafiltration system, including a circulation tank 1, a first pump body 2, a second pump body 3, an ultrafiltration membrane module 4, and a receiving container 5, wherein the first pump body 2 is a circulation pump; the second pump body 3 is a replenishment pump; the ultrafiltration membrane module 4 adopts a hollow fiber, flat plate, or tubular membrane module. When the batch production is completed, the ultrafiltration membrane module 4 needs to be replaced with a new disposable membrane pack in a timely manner to ensure the normal operation of the system.

[0020] According to the technical solution of this utility model, the outlet end of the circulation tank 1 and the inlet end of the ultrafiltration membrane module 4 are connected by a first disposable pipeline 6, on which a circulation pump, a flow meter 18 and an output valve 12 are sequentially provided; the replenishment end of the circulation tank 1 is connected to a second disposable pipeline 7, on which a replenishment pump and an input valve 13 are provided; the reflux end of the circulation tank 1 and the reflux end of the ultrafiltration membrane module 4 are connected by a third disposable pipeline 8, on which a normally closed valve 14, a first sensor 19, a reflux valve 15 and a second sensor 20 are sequentially provided; the outlet end of the ultrafiltration membrane module 4 and the receiving container 5 are connected by a fourth disposable pipeline 9, on which a third sensor 21 and a fourth sensor 22 are provided.

[0021] Preferably, in the above structure: a first disposable branch pipe 10 is provided on the first disposable pipe 6 located between the flow meter 18 and the output valve 12, and a first branch valve 16 is provided on the first disposable branch pipe 10. The first disposable branch pipe 10 can be used for the connection of other equipment on the first disposable pipe 6 or for flow diversion control.

[0022] Preferably, in the above structure: a second disposable branch line 11 is provided on the third disposable pipeline 8 located between the return valve 15 and the second sensor 20, and a second branch valve 17 is provided on the second disposable branch line 11. The second disposable branch line 11 can be used for the connection of other equipment on the third disposable pipeline 8 or for flow diversion control.

[0023] Specifically, in the aforementioned modular single-use ultrafiltration system, the flow meter 18, the first sensor 19, the second sensor 20, the third sensor 21, and the fourth sensor 22 are integrated and connected to the PCL control system. The flow meter 18 can be used to monitor feed flow rate, permeate flow rate, concentrate flow rate, etc.; each sensor is a pressure sensor, a temperature sensor, a level sensor, and a pH sensor, respectively. The pressure sensor can be used to monitor the feed pump outlet pressure, membrane module inlet pressure, permeate pressure, etc.; the temperature sensor can be used to monitor the feed liquid temperature, permeate temperature, ambient temperature, etc.; the level sensor can be used to monitor the liquid level in storage tanks, receiving containers, waste collection tanks, etc.; the pH sensor can be used to monitor the pH value of the liquid in order to control the pH value.

[0024] like Figure 2 As shown, after maintaining a stable ambient temperature, the disposable ultrafiltration system is started: First, the circulation pump is turned on to transport the feed liquid from the circulation tank 1 to the ultrafiltration membrane module 4, while simultaneously adjusting the flow rate and pressure of the circulation pump to ensure an appropriate feed rate; after the feed liquid passes through the ultrafiltration membrane module 4, large molecules are retained, and the clean liquid permeates through the membrane into the receiving container 5, where the system circulates under the maintenance of the replenishment pump, or the permeate is collected; each sensor group monitors the system's operating status in real time, and the PLC control system automatically adjusts the pump speed, pressure, and valve status based on the data from each sensor. During parameter adjustment, flexible data scale settings are provided, allowing users to zoom in or out of the data range for detailed analysis. Data from sensors including pressure, flow rate, temperature, and pH value are collected for real-time monitoring of the system status, thereby integrating data acquisition, processing, visualization, and analysis to form a data analysis tool that helps users identify trends, anomalies, and optimization points. Based on production batch data, corresponding spectral information can be generated, and finally, real-time and historical data, such as pressure change curves and flow rate change curves, are displayed on a screen or computer interface for easy comparison of data from different batches.

[0025] In addition, the monitoring alarm processing (i.e., monitoring points, alarm mechanism, processing flow and preventive measures) for faults, the alarm mode includes audible and visual alarm (i.e., the on-site buzzer alarm issues an alarm) and display screen alarm (i.e., the alarm log information is displayed on the software interface (HMI), and the corresponding icon flashes red), and the processing mode includes automatic processing and manual processing: when a serious fault is detected, such as high pressure (for example, the pressure difference between the inlet and outlet of the membrane assembly is an important indicator of membrane pollution degree, and high transmembrane pressure difference usually means that the membrane is blocked; the pressure provided by the liquid supplement pump must be moderate, and too high pressure may cause damage to the ultrafiltration membrane assembly 4), the system automatically stops and stops the operation of the pump to prevent further damage. In some cases, the system will automatically close the related valve and report to the human for processing to prevent leakage or overflow; after receiving the alarm, the operator first confirms the alarm information, records the alarm time, type and location, according to the alarm information, the operator makes a preliminary diagnosis to determine the cause of the fault, goes to the scene to check the related equipment and sensors, confirms the fault condition, including checking whether the pump, pipeline and valve are blocked or leaked, adjusting the pump speed or valve opening, checking the pump, valve and other equipment, and if necessary, repairing or replacing, after troubleshooting, restarting the system and observing the operation to ensure normal recovery.

[0026] As Figure 3 shown, the modular disposable ultrafiltration system further comprises data verification, in order to ensure the accuracy of data in the system and effectively perform data analysis and fault diagnosis, SQL Server is used for data verification, so as to be used for checking data integrity, consistency, accuracy and the like. Data integrity verification (non-empty constraint), data consistency verification (including data range check and timestamp check), data accuracy verification (including data distribution check and outlier detection), data logic verification (including correlation check and logic rule check) and automatic verification are sequentially performed, and finally a data audit report is generated.

[0027] In the technical scheme of the utility model, the modular disposable ultrafiltration system structure cooperates with the PLC control system software, which is the technical key of the case, Figure 1 The related components involved in the ultrafiltration system structure are mainly displayed, Figure 2 and Figure 3 The operation flow of the ultrafiltration system framework structure and the ultrafiltration system structure under the operation control of the PLC control system software is displayed. For the sensor and the pump body and the like, the ordinary skilled in the art can make conventional settings according to the prior art, and the case has no special requirements for the type selection and combination use and the like.

[0028] Thus, by using the technical scheme of the utility model, the PLC control system automatically adjusts the pump speed, pressure and valve state according to the sensor data, and the system is stable and the data is safe, and the system is easy to integrate with other systems or devices, or is backward compatible with old versions of products or standards, and is practical.

[0029] Through the above description, it can be found that, compared with the prior art, by using the technical scheme of the utility model, the modular disposable pipeline structure is adopted, so that the overall structure of the disposable ultrafiltration system is small and compact, the occupied space is reduced, so that the disposable consumables can be replaced in time, the functional configuration of various membrane packages and pumps can be met, and different experimental or production requirements can be met.

[0030] The technical scheme, working process and implementation effect of the utility model are described in detail above, and it should be noted that the described is only a typical example of the utility model, and the utility model can have other various specific implementation manners, and any technical scheme formed by equivalent replacement or equivalent transformation falls within the scope of protection of the utility model.

Claims

1. A modular disposable ultrafiltration system comprising a circulation tank (1), a first pump body (2), a second pump body (3), an ultrafiltration membrane module (4) and a receiving container (5), characterized in that: The liquid outlet end of the circulating tank (1) is connected with the liquid inlet end of the ultrafiltration membrane assembly (4) through a first disposable pipeline (6), and the first disposable pipeline (6) is sequentially provided with a first pump body (2), a flow meter (18) and an output valve (12); the liquid supplement end of the circulating tank (1) is connected with a second disposable pipeline (7), and the second disposable pipeline (7) is provided with a second pump body (3) and an input valve (13); the backflow end of the circulating tank (1) is connected with the backflow end of the ultrafiltration membrane assembly (4) through a third disposable pipeline (8), and the third disposable pipeline (8) is sequentially provided with a normally closed valve (14), a first sensor (19), a backflow valve (15) and a second sensor (20); the liquid outlet end of the ultrafiltration membrane assembly (4) is connected with the receiving container (5) through a fourth disposable pipeline (9), and the fourth disposable pipeline (9) is provided with a third sensor (21) and a fourth sensor (22).

2. The modular disposable ultrafiltration system of claim 1, wherein: A first disposable branch pipeline (10) is arranged on the first disposable pipeline (6) between the flow meter (18) and the output valve (12).

3. The modular disposable ultrafiltration system of claim 2, wherein: The first disposable branch pipeline (10) is provided with a first branch valve (16).

4. The modular disposable ultrafiltration system of claim 1, wherein: A second disposable branch pipeline (11) is arranged on the third disposable pipeline (8) between the backflow valve (15) and the second sensor (20).

5. The modular disposable ultrafiltration system of claim 4, wherein: The second disposable branch pipeline (11) is provided with a second branch valve (17).

6. The modular disposable ultrafiltration system of claim 1, wherein: The first pump body (2) is a circulating pump.

7. The modular disposable ultrafiltration system of claim 1, wherein: The second pump body (3) is a liquid supplement pump.

8. The modular disposable ultrafiltration system of claim 1, wherein: The flow meter (18), the first sensor (19), the second sensor (20), the third sensor (21) and the fourth sensor (22) are integrally connected to a PCL control system.

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