UF ultrafiltration and CMF continuous microfiltration device

Abstract

The utility model belongs to water treatment technical field discloses UF ultrafiltration and CMF continuous microfiltration device, including mounting bracket, CMF microfiltration unit, UF ultrafiltration unit, inlet pipe, outlet pipe, back cleaning pipe, blow-off pipe and valve control part, the valve control part includes first control assembly and second control assembly, the top fixed connection of mounting bracket has first control assembly, the water inlet of UF ultrafiltration unit is connected with the water outlet of CMF microfiltration unit through the connecting pipe, be provided with stop valve on the connecting pipe, the water outlet of UF ultrafiltration unit is connected with second control assembly, the utility model discloses through the setting of valve control assembly and connecting pipeline, will CMF microfiltration unit, UF ultrafiltration unit and supporting system integration in unified mounting bracket, the superfluous pipeline and two sets of backflushing device needed by traditional series connection device are simplified significantly, equipment complexity and manufacturing cost are reduced greatly, also make the device more convenient operation and management.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and more specifically, to UF ultrafiltration and CMF continuous microfiltration devices. Background Technology

[0002] In existing technologies, ultrafiltration (UF) and continuous microfiltration (CMF) are important membrane separation technologies, often used alone or in combination in the field of water treatment. UF membranes have high filtration accuracy and can effectively remove colloids, bacteria and even viruses, but they have high requirements for the quality of the influent. CMF membranes, on the other hand, usually have higher flux and are more resistant to fouling, and can adapt to a wider range of influent water qualities. They also have better stability in continuous operation mode, but their filtration accuracy is relatively lower than that of UF, and when used alone, the effluent water quality sometimes cannot meet higher standards.

[0003] Currently, in order to balance water quality and stability, CMF and UF are sometimes connected in series. For example, CMF is used as pretreatment, and the effluent then enters UF for fine filtration. However, this method usually requires two independent membrane systems, pumps, pipelines, valves and backwashing systems, which results in a large cost of the whole set of equipment and inconvenience in operation and management.

[0004] In view of this, we propose a UF ultrafiltration and CMF continuous microfiltration device. Utility Model Content

[0005] Technical problems to be solved The purpose of this invention is to provide a UF ultrafiltration and CMF continuous microfiltration device to solve the problems mentioned in the background art, such as the high cost and inconvenience of operation and management when traditional UF ultrafiltration and CMF continuous microfiltration devices are used in series.

[0006] Technical solution The UF ultrafiltration and CMF continuous microfiltration device includes a mounting frame, a CMF microfiltration unit, a UF ultrafiltration unit, an inlet pipe, an outlet pipe, a backwashing pipe, a drain pipe, and valve control components. The valve control components include a first control component and a second control component. The first control component is fixedly connected to the top of the frame. The inlet of the UF ultrafiltration unit and the outlet of the CMF microfiltration unit are connected through a connecting pipe, and a shut-off valve is installed on the connecting pipe. The product water outlet of the UF ultrafiltration unit is connected to the second control component.

[0007] Preferably, the first control component includes a first three-way valve and a second three-way valve. The first main port of the first three-way valve and the second main port of the second three-way valve are connected by a pipe. The first auxiliary port of the first three-way valve is fixedly connected to the water inlet pipe, and the second auxiliary port of the first three-way valve is fixedly connected to the sewage pipe. The first three-way valve is used to switch the operation modes of water inlet filtration and backwashing.

[0008] Preferably, the third auxiliary port of the second three-way valve is fixedly connected to the inlet of the CMF microfiltration unit, and the fourth auxiliary port of the second three-way valve is fixedly connected to the inlet of the UF ultrafiltration unit. The second three-way valve is used to allow the raw water flowing in through the first auxiliary port to selectively flow into the inlet of the CMF membrane module unit or directly into the inlet of the UF membrane module unit.

[0009] Preferably, a third three-way valve is fixedly connected to the water outlet pipe, the third main port of the third three-way valve is fixedly connected to the water outlet of the UF ultrafiltration unit, the fifth auxiliary port of the third three-way valve is fixedly connected to the water outlet pipe, and the sixth auxiliary port of the third three-way valve is fixedly connected to the backwashing pipe.

[0010] Preferably, a cleaning pump is fixedly connected to the backwash pipe, and a cleaning water storage tank is connected to the inlet end of the cleaning pump. The cleaning water storage tank is used to contain chemical cleaning solution.

[0011] Beneficial effects Compared with existing technologies, the advantages of this utility model are: This invention integrates the CMF microfiltration unit, UF ultrafiltration unit, and supporting system into a unified mounting frame by setting up valve control components and connecting pipelines. This significantly simplifies the redundant pipelines and two sets of backwashing devices required by traditional series devices, greatly reducing equipment complexity and manufacturing costs, and making the device easier to operate and manage.

[0012] This invention utilizes the forced isolation function of the connecting pipe shut-off valve and the reverse cleaning path design from UF to CMF to perform precise backwashing while ensuring physical isolation between the two membrane units. This eliminates the risk of cross-migration of contaminants during the cleaning process, effectively extends the service life of the membrane module, and ensures continuous and efficient operation. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another angle; Figure 3 This is a connection diagram of the first control component of this utility model; Figure 4 This is a connection diagram of the second control component of this utility model.

[0014] The following are the labeling instructions in the diagram: 1. Mounting bracket; 110. CMF microfiltration unit; 120. UF ultrafiltration unit; 4. Inlet pipe; 5. Outlet pipe; 6. Connecting pipe; 7. Backwashing pipe; 8. Drain pipe; 9. First three-way valve; 91. First main port; 92. First auxiliary port; 93. Second auxiliary port; 10. Second three-way valve; 101. Second main port; 102. Third auxiliary port; 103. Fourth auxiliary port; 11. Third three-way valve; 111. Third main port; 112. Fifth auxiliary port; 113. Sixth auxiliary port; 12. Cleaning water storage tank; 13. Cleaning pump; 14. Shut-off valve. Detailed Implementation

[0015] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0016] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0018] Please see Figure 1-4 This utility model provides a technical solution: The UF ultrafiltration and CMF continuous microfiltration device includes a mounting frame 1, a CMF microfiltration unit 110, a UF ultrafiltration unit 120, an inlet pipe 4, an outlet pipe 5, a backwash pipe 7, a drain pipe 8, and valve control components. The valve control components include a first control component and a second control component. The first control component is fixedly connected to the top of the mounting frame 1. The inlet of the UF ultrafiltration unit 120 and the outlet of the CMF microfiltration unit 110 are connected through a connecting pipe 6, on which a shut-off valve 14 is installed. The product water outlet of the UF ultrafiltration unit 120 is connected to the second control component. In this configuration, the CMF and UF units are physically integrated through the mounting frame 1, and the two-stage filtration units are connected in series through the connecting pipe 6 with the shut-off valve 14. This eliminates the complex layout of traditional dual-membrane independent systems, achieving a compact design and reducing the footprint of the device. In addition, the core control is dynamically coordinated by the valve components to control the multi-directional flow of the inlet pipe 4, backwash pipe, and drain pipe 8, avoiding the risk of misoperation due to pipe crossing and reducing the occurrence of cross-contamination.

[0019] Secondly, the first control component includes a first three-way valve 9 and a second three-way valve 10. The first main port 91 of the first three-way valve 9 and the second main port 101 of the second three-way valve 10 are connected by a pipe. The first auxiliary port 92 of the first three-way valve 9 is fixedly connected to the inlet pipe 4, and the second auxiliary port 93 of the first three-way valve 9 is fixedly connected to the drain pipe 8. The first three-way valve 9 is used to switch the operation modes of inlet filtration and backwashing. With this configuration, the first three-way valve 9 serves as the central control hub for the inlet pipe 4 and the drain pipe 8. The second three-way valve 10 is connected to the main port pipe to form a hierarchical control network. This structure integrates the traditionally separate inlet valve and drain valve into a single valve body, which not only reduces the number of pipes and interfaces but also lowers the cost.

[0020] Furthermore, the third auxiliary port 102 of the second three-way valve 10 is fixedly connected to the inlet of the CMF microfiltration unit 110, and the fourth auxiliary port 103 of the second three-way valve 10 is fixedly connected to the inlet of the UF ultrafiltration unit 120. The second three-way valve 10 is used to allow the raw water flowing into the first auxiliary port 92 to selectively flow into the inlet of the CMF membrane module unit or directly into the inlet of the UF membrane module unit. This configuration allows the third auxiliary port 102 of the second three-way valve 10 to be directly connected to the CMF inlet and the fourth auxiliary port 103 to be directly connected to the UF inlet, achieving the effect of raw water distribution and improving the adaptability of the device to different production needs.

[0021] In addition, a third three-way valve 11 is fixedly connected to the outlet pipe 5. The third main port 111 of the third three-way valve 11 is fixedly connected to the product water port of the UF ultrafiltration unit 120, the fifth auxiliary port 112 of the third three-way valve 11 is fixedly connected to the outlet pipe 5, and the sixth auxiliary port 113 of the third three-way valve 11 is fixedly connected to the backwash pipe 7. This configuration realizes a physical isolation interface for both product water and backwash modes, integrating the independent bypass pipeline required for traditional backwashing into the main product water line, further reducing cost and the complexity of the device.

[0022] Specifically, a cleaning pump 13 is fixedly connected to the backwash pipe 7, and a cleaning water storage tank 12 is connected to the water inlet of the cleaning pump 13. The cleaning water storage tank 12 is used to contain chemical cleaning solution. This arrangement allows the cleaning pump 13 and the cleaning water storage tank 12 to form a chemical cleaning path through the backwash pipe 7.

[0023] Furthermore, when backwashing the UF ultrafiltration unit 120, the shut-off valve 14 on the connecting pipe 6 is closed, blocking the water flow channel between the CMF microfiltration unit 110 and the UF ultrafiltration unit 120. With this configuration, when the UF is backwashed, the shut-off valve 14 on the connecting pipe 6 is closed, forming a physical isolation barrier, allowing the chemical cleaning solution to enter from the outlet of the UF ultrafiltration unit 120 to backwash its filter membrane.

[0024] Furthermore, when backwashing the CMF microfiltration unit 110, the UF ultrafiltration unit 120 must be backwashed first. The cleaning water flows through the following path: the cleaning solution enters from the product water port of the UF ultrafiltration unit 120, flows in reverse through the membrane layer of the UF ultrafiltration unit 120, and then enters the CMF microfiltration unit 110 through the connecting pipe 6 for cleaning. This arrangement allows the backwashing pipe 7 to backwash two membrane units simultaneously, further reducing the manufacturing cost of the device.

[0025] It should be noted that the CMF microfiltration unit 110 and UF ultrafiltration unit 120 used in this utility model are both mature membrane module products in the field of water treatment. This solution does not change the structural characteristics of the membrane unit itself. The essential innovation of this utility model is to realize the physical isolation of the two-stage membrane units in series through the connecting pipe 6 with the shut-off valve 14, and to realize the raw water diversion and reconstruct the filtration and cleaning channels by combining the controllable setting of the three-way valve.

[0026] Working principle: Raw water is transported to the first control component via the inlet pipe 4. The first three-way valve 9 switches the water flow path according to the operating mode: In filtration mode, the raw water is distributed to the second three-way valve 10 through the main port of the first three-way valve 9. At this time, the second three-way valve 10 can choose to divert the water to the CMF microfiltration unit 110 for primary filtration or directly to the UF ultrafiltration unit 120 for fine filtration. After the water flows into the CMF unit for pretreatment, its product water is transported to the UF unit for further purification via the connecting pipe 6. Finally, the purified water enters the second control component through the UF product water port and is guided to the outlet pipe 5 for output by the third three-way valve 11.

[0027] When backwashing is started, the first three-way valve 9 switches to the drain passage, the cleaning pump 13 draws the chemical agent from the cleaning water storage tank 12, injects it into the third three-way valve 11 through the backwash pipe 7 and inputs it in reverse into the UF product water port; if the cleaning target is the UF unit, the shut-off valve 14 of the connecting pipe 6 is closed simultaneously to isolate the CMF unit, and the cleaning liquid penetrates the UF membrane layer in reverse and is discharged through the drain pipe 8; if the CMF unit needs to be cleaned, the UF backwash process is first executed to establish a through flow channel, and then the cleaning liquid continues to flush the CMF membrane layer in reverse through the connecting pipe 6, realizing targeted deep cleaning of the dual-membrane series system, which eliminates the risk of cross-contamination while ensuring filtration efficiency.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. UF ultrafiltration and CMF continuous microfiltration apparatus, characterized in that: The device includes a mounting bracket (1), a CMF microfiltration unit (110), a UF ultrafiltration unit (120), an inlet pipe (4), an outlet pipe (5), a backwash pipe (7), a drain pipe (8), and a valve control component. The valve control component includes a first control component and a second control component. The first control component is fixedly connected to the top of the mounting bracket (1). The inlet of the UF ultrafiltration unit (120) is connected to the outlet of the CMF microfiltration unit (110) through a connecting pipe (6). A shut-off valve (14) is provided on the connecting pipe (6). The outlet of the UF ultrafiltration unit (120) is connected to the second control component.

2. The UF ultrafiltration and CMF continuous microfiltration apparatus of claim 1, wherein: The first control component includes a first three-way valve (9) and a second three-way valve (10). The first main port (91) of the first three-way valve (9) and the second main port (101) of the second three-way valve (10) are connected by a pipe. The first auxiliary port (92) of the first three-way valve (9) is fixedly connected to the water inlet pipe (4). The second auxiliary port (93) of the first three-way valve (9) is fixedly connected to the sewage pipe (8). The first three-way valve (9) is used to switch the operation modes of water inlet filtration and backwashing.

3. The UF ultrafiltration and CMF continuous microfiltration apparatus of claim 2, wherein: The third auxiliary port (102) of the second three-way valve (10) is fixedly connected to the inlet of the CMF microfiltration unit (110), and the fourth auxiliary port (103) of the second three-way valve (10) is fixedly connected to the inlet of the UF ultrafiltration unit (120). The second three-way valve (10) is used to allow the raw water flowing into the first auxiliary port (92) to selectively flow into the inlet of the CMF membrane module unit or directly into the inlet of the UF membrane module unit.

4. The UF ultrafiltration and CMF continuous microfiltration apparatus of claim 1, wherein: A third three-way valve (11) is fixedly connected to the water outlet pipe (5). The third main port (111) of the third three-way valve (11) is fixedly connected to the water outlet of the UF ultrafiltration unit (120). The fifth auxiliary port (112) of the third three-way valve (11) is fixedly connected to the water outlet pipe (5). The sixth auxiliary port (113) of the third three-way valve (11) is fixedly connected to the backwash pipe (7).

5. The UF ultrafiltration and CMF continuous microfiltration apparatus of claim 4, wherein: A cleaning pump (13) is fixedly connected to the backwash pipe (7), and a cleaning water storage cylinder (12) is connected to the water inlet of the cleaning pump (13). The cleaning water storage cylinder (12) is used to contain chemical cleaning solution.

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