Aeration chassis for immersed hollow fiber membrane filter unit

Abstract

The aeration chassis comprises a chassis body, a gas storage cavity, an aeration cavity, a gas channel and a gas pipe are arranged in the chassis body, a partition plate is arranged between the gas storage cavity and the aeration cavity, a gas port is formed in the partition plate, the gas channel is arranged in the gas storage cavity, and an outlet of the gas channel is communicated with the gas port. An inlet of the gas channel communicates with the gas storage cavity, the gas pipe is arranged in the gas storage cavity, and a plurality of gas holes are formed in the gas pipe. An air port is arranged on the upper portion of the tank body, an aeration plate is arranged above the air port, and a plurality of aeration channels communicated with the air port are arranged on the side wall of the aeration plate. The aeration plate is arranged above the air port, the plurality of aeration channels communicated with the air port are arranged on the side wall of the aeration plate, and large bubbles discharged from the air port pass through the plurality of aeration channels to form a plurality of small bubbles to be discharged. And the membrane filaments above can be uniformly aerated.

Description

Technical Field

[0001] The utility model belongs to the technical field of filtration, and in particular relates to an aeration chassis for an immersed hollow fiber membrane filter assembly. Background Art

[0002] Submerged membrane modules are widely used in sewage treatment and water purification, and have the functions of efficient filtration and separation. However, during long-term use, impurities such as sludge, microorganisms and organic matter are easily attached to the surface of the membrane fibers, resulting in a decrease in the flux of the membrane module, affecting its filtration effect and service life. In order to maintain the normal operation of the membrane module, aeration is usually used to clean and maintain the membrane fibers.

[0003] The existing aeration device mainly arranges an air pipe or air disk under the membrane assembly to discharge air through the air holes to form bubbles, so as to flush and clean the membrane fibers. However, the common aeration devices in the prior art have the following problems:

[0004] 1. Uneven distribution of bubbles: Traditional aeration devices are usually simple in design. Bubbles rise directly after being discharged from the pores, and tend to concentrate in local areas, resulting in uneven distribution of bubbles. This uneven distribution of bubbles cannot fully and effectively clean the membrane surface, making it impossible to completely remove dirt in some areas, affecting the overall cleaning effect.

[0005] 2. Low aeration efficiency: Due to the uneven distribution and large size of bubbles, the aeration efficiency of existing aeration devices is low and the aeration cleaning function cannot be fully utilized. This leads to the need for more frequent cleaning and maintenance, which increases the operating and maintenance costs.

[0006] 3. Simple structural design: The structural design of existing aeration devices is relatively simple, lacks optimization of the bubble flow path, and fails to fully utilize the movement characteristics of the bubbles to improve the cleaning effect. Utility Model Content

[0007] In order to solve the above problems, the utility model provides an aeration chassis for an immersed hollow fiber membrane filter module.

[0008] The technical solution provided by the utility model is as follows:

[0009] An aeration chassis for an immersed hollow fiber membrane filter module, comprising a chassis body, an air storage cavity, an aeration cavity, a gas channel and an air pipe are arranged in the chassis body, a partition is arranged between the air storage cavity and the aeration cavity, an air port is opened on the partition, the gas channel is arranged in the air storage cavity, and the outlet of the gas channel is connected with the air port, the inlet of the gas channel is connected with the air storage cavity, the air pipe is arranged in the air storage cavity, and a plurality of air holes are opened on the air pipe;

[0010] An aeration plate is arranged above the air port, and a plurality of aeration channels connected with the air port are opened on the side wall of the aeration plate.

[0011] In some embodiments, a plurality of aeration channels are distributed in a spiral shape along the center of the air port.

[0012] In some embodiments, the gas channel includes an outer shell and an inner shell arranged in the outer shell, a first opening is provided on the top side wall of the outer shell as an entrance to the gas channel, a third opening is provided on the top of the inner shell and is connected to the gas port as an exit of the gas channel, and a second opening is provided on the bottom of the inner shell and is connected to the outer shell.

[0013] In some embodiments, a liquid outlet is opened at the bottom of the outer shell.

[0014] In some embodiments, the aeration chamber is surrounded by side walls extending upward, and the side walls are used to be plugged into and fit with the membrane assembly.

[0015] In some embodiments, the outer wall of the chassis body is a regular hexagon.

[0016] In some embodiments, a plurality of chassis bodies are provided and arranged side by side, and the plurality of chassis bodies arranged side by side share one air pipe.

[0017] In summary, the beneficial effects of the utility model are as follows:

[0018] (1) The utility model provides an aeration plate above the air port, and the side wall of the aeration plate is provided with a plurality of aeration channels connected to the air port. Large bubbles discharged from the air port pass through the plurality of aeration channels and are discharged as a plurality of small bubbles, so that the upper membrane filaments can be evenly aerated.

[0019] (2) The aeration channel of the utility model is distributed in a spiral shape along the center of the air port. Small bubbles move upward in a spiral shape under the action of the aeration channel. In the process of rising, the small bubbles can more fully contact the surface of the membrane fibers, thereby improving the aeration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is another structural schematic diagram of the utility model from another perspective;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0023] Figure 4 Schematic diagram of the cross section of the aeration channel in Example 2;

[0024] Figure 5 This is a schematic diagram of the internal structure of the utility model;

[0025] Figure 6 Schematic diagram of the gas channel structure.

[0026] The reference numerals are as follows:

[0027] 1. Gas storage chamber; 2. Aeration chamber; 3. Gas channel; 4. Air pipe; 5. Baffle; 6. Air port; 7. Air hole; 8. Aeration plate; 9. Aeration channel; 10. Chassis body;

[0028] 21. Side wall; 31. Outer shell; 32. Inner shell; 33. First opening; 34. Second opening; 35. Third opening; 36. Liquid outlet. DETAILED DESCRIPTION

[0029] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention. Example

[0030] like Figure 1-6 As shown, the present embodiment provides an aeration chassis for an immersed hollow fiber membrane filter assembly, including a chassis body 10, wherein an air storage chamber 1, an aeration chamber 2, a gas channel 3 and an air pipe 4 are arranged in the chassis body 10, wherein the air storage chamber 1 and the aeration chamber 2 are separated by a partition 5, the aeration chamber 2 is located above the partition 5, and the air storage chamber 1 is located below the partition 5, an air port 6 is opened on the partition 5, the gas channel 3 is arranged in the air storage chamber 1, the outlet of the gas channel 3 is connected with the aeration chamber 2 through the air port 6, the inlet of the gas channel 3 is connected with the air storage chamber 1, the air pipe 4 is arranged in the air storage chamber 1, and a plurality of air holes 7 are opened on the air pipe 4, and the gas in the air pipe 4 is discharged from the air holes 7 and enters the air storage chamber 1.

[0031] Specifically, the gas channel 3 includes an outer shell 31 and an inner shell 32 disposed in the outer shell 31. A liquid outlet 36 is provided at the bottom of the outer shell 31. The provision of the liquid outlet 36 helps to discharge the water in the outer shell 31. A first opening 33 is provided on the top side wall of the outer shell 31 as the entrance of the gas channel 3. A third opening 35 is provided on the top of the inner shell 32 to communicate with the gas port 6 as the outlet of the gas channel 3. A second opening 34 is provided at the bottom of the inner shell 32 to communicate with the outer shell 31. The gas in the gas storage chamber 1 enters the outer shell 31 from the first opening 33, then enters the inner shell 32 through the second opening 34, and finally enters the aeration chamber 2 from the third opening 35.

[0032] An aeration plate 8 is provided above the air port 6, and a plurality of aeration channels 9 connected to the air port 6 are provided on the side wall of the aeration plate 8. Large bubbles discharged from the air port 6 pass through the aeration channels 9 to form a plurality of small bubbles and discharge to aerate the membrane filaments above.

[0033] The working principle of this embodiment:

[0034] The aeration chassis of the submerged hollow fiber membrane filter group is arranged below the membrane assembly and immersed in water together with the membrane assembly. In order to achieve aeration, first, the air pipe 4 is ventilated, and the gas is discharged from the air hole 7 and moves upward. The gas gradually accumulates in the gas storage chamber 1. Under the action of pressure, the gas enters the outer shell 31 from the first opening 33 and continues to take in air. The liquid in the outer shell 31 is discharged from the liquid outlet 36. When the liquid level in the gas storage chamber 1 is lower than the second opening 34, the gas enters the inner shell 32 and forms large bubbles in the inner shell 32.

[0035] The large bubbles are discharged from the gas port 6 under the action of gas pressure, and after passing through the aeration channel 9 and entering the aeration chamber 2, the large bubbles are formed into a number of small bubbles that move upward to aerate the membrane filaments above, thereby achieving uniform aeration of the membrane filaments. Example

[0036] This embodiment is formed on the basis of the embodiment 1, and the aeration efficiency is improved by further setting the specific structure of the aeration channel 9, specifically:

[0037] Please refer to Figure 4 , a plurality of aeration channels 9 are spirally distributed along the center of the air port 6. After the large bubbles are divided into small bubbles, the small bubbles move upward in a spiral shape under the action of the spirally distributed aeration channels 9. The small bubbles can more fully contact the membrane fiber surface during the rising process, thereby improving the aeration effect. Example

[0038] This embodiment is formed on the basis of embodiment 1 or embodiment 2, and provides a set of aeration bottom plates for submerged hollow fiber membrane filter modules, specifically:

[0039] Please refer to Figure 1-2 The outer wall of the chassis body 10 is a regular hexagon. A plurality of chassis bodies 10 are provided and arranged side by side. The sides of two adjacent chassis bodies 10 are in contact with each other. The plurality of chassis bodies 10 arranged side by side share one air pipe 4.

[0040] Furthermore, the aeration chamber 2 has side walls 21 extending upwards around it, and the side walls 21 are used to be plugged with the membrane assembly. The bottom of the membrane assembly has side walls that match the aeration chamber 2 around it, and can be plugged into the chassis aeration chamber 2, which improves the efficiency of device assembly and is also convenient for disassembly and maintenance.

[0041] It should be noted that the implementation methods not shown or described in the drawings or the text of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each element and method are not limited to the various specific structures, shapes or methods mentioned in the embodiments.

[0042] It should also be noted that this document may provide demonstrations of parameters containing specific values, but these parameters do not need to be exactly equal to the corresponding values, but can be approximated to the corresponding values ​​within an acceptable error tolerance or design constraint. Directional terms mentioned in the embodiments, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", etc., are only referenced to the directions of the drawings and are not intended to limit the scope of protection of this application.

[0043] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. An aeration base for an immersed hollow fiber membrane filter module, characterized in that: The invention comprises a chassis body (10), wherein the chassis body (10) is provided with an air storage chamber (1), an aeration chamber (2), a gas channel (3) and an air pipe (4), wherein a partition (5) is provided between the air storage chamber (1) and the aeration chamber (2), wherein an air port (6) is provided on the partition (5), wherein the gas channel (3) is provided in the air storage chamber (1), and an outlet of the gas channel (3) is communicated with the air port (6), and an inlet of the gas channel (3) is communicated with the air storage chamber (1), and wherein the air pipe (4) is provided in the air storage chamber (1), and wherein a plurality of air holes (7) are provided on the air pipe (4); An aeration plate (8) is provided above the air port (6), and a plurality of aeration channels (9) communicating with the air port (6) are provided on the side wall of the aeration plate (8).

2. The aeration base for the submerged hollow fiber membrane filter assembly according to claim 1, characterized in that: The plurality of aeration channels (9) are distributed in a spiral shape along the center of the air port (6).

3. The aeration base for the submerged hollow fiber membrane filter assembly according to claim 1, characterized in that: The gas channel (3) comprises an outer shell (31) and an inner shell (32) arranged in the outer shell (31); a first opening (33) is provided on a top side wall of the outer shell (31) as an inlet of the gas channel (3); a third opening (35) is provided on the top of the inner shell (32) and is connected to the gas port (6) as an outlet of the gas channel (3); and a second opening (34) is provided on the bottom of the inner shell (32) and is connected to the outer shell (31).

4. The aeration base for the submerged hollow fiber membrane filter assembly according to claim 3, characterized in that: The bottom of the outer shell (31) is provided with a liquid outlet (36).

5. The aeration base for the submerged hollow fiber membrane filter assembly according to claim 1, characterized in that: The aeration chamber (2) is provided with side walls (21) extending upwards on all sides, and the side walls (21) are used for plugging and matching with the membrane assembly.

6. The aeration base for the submerged hollow fiber membrane filter assembly according to claim 1, characterized in that: The outer wall of the chassis body (10) is in the shape of a regular hexagon.

7. The aeration base for the submerged hollow fiber membrane filter assembly according to claim 6, characterized in that: A plurality of chassis bodies (10) are provided and arranged side by side, and the plurality of chassis bodies (10) arranged side by side share one air pipe (4).

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