Large ultrafiltration device

Abstract

The utility model relates to the technical field of filtering equipment, in particular to a large-scale ultrafiltration device, which comprises a filtering component and a plurality of membrane stacks distributed at intervals, the first pipeline is arranged at the bottom of the filtering assembly in a surrounding manner and is used for respectively introducing raw water into the membrane stack during filtering or discharging cleaning water passing through the membrane stack during backwashing; the second pipeline is arranged at the top of the filtering assembly in a surrounding manner and is used for discharging produced water passing through the membrane stack during filtering or introducing backwashing water into the membrane stack during backwashing; the third pipeline is arranged in the middle of the filtering assembly in a surrounding manner and is used for introducing compressed air into the membrane stack so as to scrub the interior of the membrane stack; the fourth pipeline is arranged in the middle of the filtering assembly in a surrounding mode and used for discharging waste water passing through a membrane stack during filtering, it can be guaranteed that cleaning liquid is evenly distributed on the surface of a membrane in an annular water distribution mode, and therefore the cleaning effect is maximized, and the service life of the membrane is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment technology, and in particular to a large-scale ultrafiltration device. Background Technology

[0002] With the gradual maturation of ultrafiltration membrane technology, ultrafiltration membranes are being used more and more widely in various water treatment systems.

[0003] Existing ultrafiltration devices, such as the large horizontal ultrafiltration device disclosed in patent number CN 201614310 U, include an ultrafiltration membrane frame and a valve frame. The ultrafiltration membrane frame has a dual-ring water distributor and a dual-ring water productr. The dual-ring water distributor has four inverted U-shaped water distribution pipes, one end of which is closed. Two water distribution pipes are located on the front and rear sides, and membrane shells are arranged parallel between the water distribution pipes. The corresponding membrane shells on both sides are of the same height and are connected to the water distribution pipes. There are membrane elements inside the membrane shells, and the membrane shells have water product channels. The two flow ends on the same side are connected by a central water distribution pipe connected to the water inlet. The dual-ring water productr has four inverted U-shaped water product pipes located outside the corresponding water distribution pipes. The water product pipes are connected to their corresponding water product channels. The two water product pipes on the same side are connected by a central pipe connected to the purified water outlet. The water inlet and the purified water outlet extend into the gap at the top of the valve frame. The large-scale horizontal ultrafiltration device of this invention has a maximum processing capacity of 44,000 m3 / d, reduces the number of parts, reduces the footprint, lowers maintenance costs, and facilitates maintenance and operation.

[0004] The aforementioned ultrafiltration device suffers from varying degrees of uneven water distribution in the feed water distribution, product water distribution, and backwash water distribution systems. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a large-scale ultrafiltration device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a large-scale ultrafiltration device, including

[0008] A filtration assembly comprising multiple spaced-apart membrane stacks;

[0009] The first pipeline is arranged around the bottom of the filter assembly and is used to pass raw water into the membrane stack during filtration or to discharge the cleaning water that has passed through the membrane stack during backwashing.

[0010] The second pipeline is arranged around the top of the filter assembly and is used to discharge the permeate water that has passed through the membrane stack during filtration or to introduce backwash water into the membrane stack during backwashing.

[0011] The third pipeline, which is arranged around the middle of the filter assembly, is used to introduce compressed air into the membrane stack to achieve air scrubbing of the inside of the membrane stack.

[0012] The fourth pipeline, which is arranged around the middle of the filter assembly, is used to discharge the wastewater that has passed through the membrane stack during filtration.

[0013] Furthermore, the first pipeline includes a transverse pipeline connected to both sides of the filter assembly and a longitudinal pipeline connected to both ends of the transverse pipeline to form a ring pipeline.

[0014] Furthermore, each of the two longitudinal pipelines is connected to a raw water inlet and a backwash discharge outlet, respectively.

[0015] Furthermore, the second pipeline includes a second transverse pipeline connected to both sides of the filter assembly, and a second longitudinal pipeline connected to both ends of the second transverse pipeline to form a ring pipeline.

[0016] Furthermore, the two longitudinal pipelines are respectively connected to a product water outlet and a backwash water inlet.

[0017] Furthermore, the third pipeline is connected to a compressed air inlet.

[0018] Furthermore, the fourth pipeline is connected to a concentrated water discharge outlet.

[0019] The large-scale ultrafiltration device proposed in this utility model has the following advantages:

[0020] This invention ensures that the cleaning solution is evenly distributed on the membrane surface through a ring-shaped water distribution method, thereby maximizing the cleaning effect, extending the service life of the membrane, and effectively guaranteeing the performance of the ultrafiltration device during backwashing. At the same time, by optimizing space utilization, pipe layout design, and water distribution method, it achieves efficient, stable, and economical water purification. The frameless structural design further simplifies the pipe layout and reduces material usage and manufacturing costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a side view of the present invention;

[0023] Figure 3 This is a cross-sectional view of the present invention; Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example, refer to Figure 1-3 A large-scale ultrafiltration device, including

[0026] The filter assembly 1 includes multiple spaced membrane stacks 101;

[0027] The first pipeline 2 is arranged around the bottom of the filter assembly 1 and is used to pass raw water into the membrane stack 101 during filtration or to discharge the cleaning water that has passed through the membrane stack 101 during backwashing.

[0028] The second pipeline 3 is arranged around the top of the filter assembly 1 and is used to discharge the permeate water that has passed through the membrane stack 101 during filtration or to introduce backwash water into the membrane stack 101 during backwashing.

[0029] The third pipeline 4 is arranged around the middle of the filter assembly 1 and is used to introduce compressed air into the membrane stack 101 to achieve air scrubbing of the inside of the membrane stack 101.

[0030] The fourth pipe 5 is arranged around the middle of the filter assembly 1 and is used to discharge the wastewater that has passed through the membrane stack 101 during filtration.

[0031] This invention utilizes a ring-shaped water distribution method to ensure uniform distribution of the cleaning solution on the membrane surface, thereby maximizing the cleaning effect, extending the membrane's lifespan, and effectively guaranteeing the performance of the ultrafiltration unit during backwashing. Furthermore, by optimizing space utilization, pipe layout, and water distribution, it achieves efficient, stable, and economical water purification. The frameless structural design further simplifies pipework arrangement while reducing material usage and manufacturing costs.

[0032] In an optional embodiment of the present invention, the first pipeline 2 includes a transverse pipeline 201 connected to both sides of the filter assembly 1 and a longitudinal pipeline 202 connected to both ends of the transverse pipeline 201 to form an annular pipeline.

[0033] In an optional embodiment of this utility model, two longitudinal pipelines 202 are respectively connected to a raw water inlet 203 and a backwash discharge port 204. The raw water inlet 203 and the backwash discharge port 204 are equipped with pneumatic valves. During filtration, raw water enters the longitudinal pipeline 202 through the raw water inlet 203 and enters multiple membrane stacks 101 through the transverse pipeline 201 for filtration. During backwashing, backwash water is introduced into the multiple membrane stacks 101 from the top of the multiple membrane stacks 101, flows to the bottom of the multiple membrane stacks 101, enters the longitudinal pipeline 202 through the transverse pipeline 201, and is discharged through the backwash discharge port 204.

[0034] In an optional embodiment of the present invention, the second pipeline 3 includes a second transverse pipeline 301 connected to both sides of the filter assembly 1 and a second longitudinal pipeline 302 connected to both ends of the second transverse pipeline 301 to form an annular pipeline.

[0035] In an optional embodiment of this utility model, two longitudinal pipelines 302 are respectively connected to a product water outlet 303 and a backwash water inlet 304, and the product water outlet 303 and the backwash water inlet 304 are equipped with pneumatic valves. During filtration, the product water filtered by multiple membrane stacks 101 flows into the transverse pipeline 301 and enters the longitudinal pipeline 302, and finally flows out at the product water outlet 303. During backwashing, the backwash water enters the longitudinal pipeline 302 through the backwash water inlet 304 and enters the interior of multiple membrane stacks 101 through the transverse pipeline 301 for reverse cleaning.

[0036] In an optional embodiment of this utility model, the third pipeline 4 is connected to a compressed air inlet 401, and the compressed air inlet 401 is equipped with a pneumatic valve; during air scrubbing, compressed air enters the third pipeline 4 through the compressed air inlet 401 and enters the interior of multiple membrane stacks 101 for air scrubbing.

[0037] In an optional embodiment of this utility model, the fourth pipeline 5 is connected to a concentrate discharge port 501, which is equipped with a pneumatic valve. During filtration, wastewater passing through multiple membrane stacks 101 enters the fourth pipeline 5 and is discharged through the concentrate discharge port 501.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0039] In the description of this specification, 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", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing the technical solution of this patent 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, and therefore should not be construed as a limitation on this patent application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this patent application, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this specification, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this specification according to the specific circumstances.

[0042] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A large-scale ultrafiltration device, characterized in that: include The filter assembly (1) includes multiple spaced membrane stacks (101); The first pipeline (2) is arranged around the bottom of the filter assembly (1) and is used to pass the raw water into the membrane stack (101) during filtration or to discharge the cleaning water that has passed through the membrane stack (101) during backwashing. The second pipeline (3) is arranged around the top of the filter assembly (1) and is used to discharge the permeate water passing through the membrane stack (101) during filtration or to pass backwash water into the membrane stack (101) during backwashing. The third pipeline (4) is arranged around the middle of the filter assembly (1) for introducing compressed air into the membrane stack (101) to achieve air scrubbing of the inside of the membrane stack (101); The fourth pipe (5) is arranged around the middle of the filter assembly (1) and is used to discharge the wastewater that has passed through the membrane stack (101) during filtration.

2. The ultrafiltration device according to claim 1, characterized in that: The first pipeline (2) includes a transverse pipeline (201) connecting both sides of the filter assembly (1) and a longitudinal pipeline (202) connecting the two ends of the transverse pipeline (201) to form an annular pipeline.

3. The ultrafiltration device according to claim 2, characterized in that: The two longitudinal pipelines (202) are respectively connected to the raw water inlet (203) and the backwash discharge outlet (204).

4. The ultrafiltration device according to claim 1, characterized in that: The second pipeline (3) includes a second transverse pipeline (301) connecting both sides of the filter assembly (1) and a second longitudinal pipeline (302) connecting the two ends of the second transverse pipeline (301) to form an annular pipeline.

5. The ultrafiltration device according to claim 4, characterized in that: The two longitudinal pipelines (302) are respectively connected to a product water outlet (303) and a backwash water inlet (304).

6. The ultrafiltration device according to claim 1, characterized in that: The third pipeline (4) is connected to a compressed air inlet (401).

7. The ultrafiltration device according to claim 1, characterized in that: The fourth pipeline (5) is connected to a concentrated water discharge outlet (501).

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