Immersed membrane module

Abstract

In order to solve the technical problem that a non-detachable frame in the prior art is inconvenient to replace and maintain, the utility model provides the immersed membrane module. The immersed membrane assembly comprises a large cover, a middle assembly main body and an aeration assembly, the middle assembly main body comprises an upper cover, a positioning rod and a base, the positioning rod is sleeved with a loop bar, and the loop bar is fixed with the upper cover and the base into a whole; threads are arranged at two ends of the positioning rod; the lower part of the positioning rod sequentially penetrates through the large cover, the upper cover and the base and then is in threaded connection with a shell of the aeration assembly; the upper part of the positioning rod penetrates through the large cover and then is fixed through a nut. The detachable split type structure is adopted, water in a water pool does not need to be drained during replacement, only the nut at the position of the large cover needs to be detached, the middle assembly body is pulled up along the positioning rod, then a new middle assembly body is put down along the positioning rod, the nut is fixed, operation is convenient, and replacement is convenient. And the production cost and the replacement cost of the membrane shell are saved.

Description

Technical Field

[0001] This utility model relates to the field of submersible membrane module structure. Background Technology

[0002] Submerged membrane modules, unlike pressure-type modules, involve placing the membrane module in a water tank and using negative pressure from the membrane permeate meter to produce water. Currently, based on different pore sizes, the most commonly used are submerged microfiltration membranes (pore size ≥ 0.1 μm) and submerged ultrafiltration membranes (pore size < 0.1 μm). Microfiltration membranes are mainly used in conjunction with biological methods in MBR projects, while ultrafiltration membranes are mainly used for upgrading and retrofitting tap water systems.

[0003] In existing submersible membrane modules, the frame used to fix the main body of the central module is fixed to the central module as a whole and cannot be disassembled. When the main body of the membrane module needs to be repaired or replaced, the water in the pool needs to be drained and the frame along with the main body of the central module needs to be removed for replacement or repair. This operation is extremely inconvenient and wastes frame materials.

[0004] In addition, CN118558147B discloses a high-fill-density submerged hollow fiber membrane filtration device and its filter membrane module. Its aeration structure is designed so that the external air source enters from the bottom, which requires the gas pipeline to be arranged at the bottom of the pool. However, the bottom of the pool is complex, and it is difficult to ensure that the gas pipeline is arranged on the same horizontal plane. The pipeline needs to be leveled, which is time-consuming and laborious, and it is also difficult to ensure absolute levelness, resulting in uneven aeration. Bottom air intake also occupies the space at the bottom of the pool and increases the height of the membrane module. When the pool is shallow, the effective working height of the submerged membrane module is limited. Utility Model Content

[0005] In order to solve the technical problem in the background art where the frame and the main body of the middle component cannot be disassembled, resulting in inconvenience for replacement and maintenance, this utility model provides an immersion membrane module.

[0006] The technical solution adopted in this utility model is:

[0007] A submersible membrane module includes a large cover 6, a middle module body, and an aeration module. The middle module body includes an upper cover 1, a sleeve rod 7, and a base 2. The sleeve rod 7 is fixedly connected to the upper cover 1 and the base 2 as a whole. The feature is that a positioning rod 3 is provided inside the sleeve rod 7, there is a gap between the positioning rod 3 and the sleeve rod 7, and the sleeve rod 7 can be removed from the positioning rod 3; the two ends of the positioning rod 3 are provided with threads.

[0008] The large cover 6 is provided with a channel for the positioning rod 3 to pass through. The upper cover 1 and the base 2 are provided with a channel for the sleeve rod 7 to be fixed. The outer shell 55 of the aeration component is provided with a threaded hole that matches the bottom thread of the positioning rod 3. The lower part of the positioning rod 3 passes through the large cover 6, the upper cover 1, and the base 2 in sequence and is threadedly connected to the outer shell 55 of the aeration component. The upper part of the positioning rod 3 passes through the large cover 6 and is tightened by a nut.

[0009] Positioning rod 3 and / or sleeve rod 7 are made of fiberglass or stainless steel, or other materials may be selected.

[0010] Preferably, when the immersion membrane module is rectangular, there are four positioning rods 3 and four sleeve rods 7. The four positioning rods 3 are installed at the four corners of the upper cover.

[0011] Preferably, the submerged membrane module further includes an air inlet channel, which includes a large cover air inlet channel, an upper cover air inlet channel 41, a hose 42 and a base air inlet channel 43 connected in sequence. The large cover air inlet channel passes through the large cover 6, the upper cover air inlet channel 41 passes through the upper cover 1, the base air inlet channel 43 passes through the base 2, and the hose 42 connects the upper cover air inlet channel 41 and the base air inlet channel 43.

[0012] Preferably, the hose 42 is a smooth hose 42 or a corrugated hose.

[0013] Preferably, the outer cover 55 of the aeration component has a top and a side wall. The top of the outer cover 55 is fixedly connected to the base 2, and the bottom of the outer cover 55 is open. The outer cover 55 is provided with an aeration component air inlet channel 44 that communicates with the air inlet channel 43 of the base. The aeration component air inlet channel 44 passes through the top of the outer cover 55.

[0014] Preferably, the inner or outer wall of the outer cover 55 is provided with reinforcing ribs 52. Figure 1 The inner wall of the outer cover 55 is shown to have reinforcing ribs 52.

[0015] The aeration assembly also includes an air collection hood 51 fixed to the lower surface of the top of the outer cover 55 and an aeration pipe 53 located inside the air collection hood 51. The upper end of the aeration pipe 53 penetrates the top of the outer cover. There is a gap between the top of the air collection hood 51 and the outer cover 55. The lower part of the air collection hood 51 has a drain hole for quickly draining the water inside the air collection hood 51. Otherwise, the water inside the air collection hood 51 can only be drained from the upper part of the air collection hood 51. The bottom of the aeration pipe 53 is connected to the air collection hood 51.

[0016] Preferably, the outer wall of the aeration pipe 53 is fixed with a support ear 531 to maintain a stable relative position between the air collecting hood 51 and the aeration pipe 53, and to prevent the air collecting hood 51 and the aeration pipe 53 from being deformed or displaced due to uneven water pressure or air pressure.

[0017] Preferably, the upper end of the aeration pipe 53 is connected to the air distributor 57, which is located between the base 2 and the outer cover 55 of the aeration assembly. More preferably, the top of the outer cover 55 has a receiving space 59 that matches the shape of the air distributor 57 to accommodate it, avoiding excessive occupation of the overall longitudinal space and making the longitudinal structure more compact. An air distribution channel is provided on the lower surface of the air distributor 57, and an air distribution through hole 571 is provided at the outlet of the air distribution channel. An aeration head 54 is fixed at the upper end of the air distribution through hole. Specifically, the air distributor 57 is a four-part air distributor 57, and the shape and structure of the air distributor 57 can also adopt other existing forms.

[0018] The aeration head 54 has a hollow body with a closed top and aeration holes 541 on the side wall. Preferably, there are four aeration holes 541, which can aerate in four directions. The closed top and side air outlet of the body can prevent sludge or pollutants from falling and blocking the aeration holes 541.

[0019] Preferably, the top of the body is enlarged to block silt or pollutants, preventing silt or pollutants from falling and clogging the aeration holes 541.

[0020] Preferably, the outer wall of the aeration head 54 is provided with a groove 542. When resin is poured between the central component body and the base 2, the groove can increase the firmness between the aeration head 54 body and the resin and prevent delamination.

[0021] Preferably, the bottom outer edge of the aeration head 54 is provided with a positioning hole 543, and the air distributor 57 is snapped into the positioning hole 543.

[0022] The beneficial effects of this utility model are: (1) It adopts a detachable split structure. When replacing the membrane module body, it is not necessary to drain the water in the pool. Just unscrew the nut at the cover and pull the middle module body up along the positioning rod. When replacing, you only need to replace the middle module body, put the new middle module body down along the positioning rod, and then pass the four holes of the cover through the positioning rod and fix it tightly with nuts. The replacement of this new module is completed. It is not only convenient to operate, but also saves a lot of membrane shell production and replacement costs.

[0023] (2) The air inlet channel extends from the top cover of the membrane module to the aeration module. Compared with the existing technology of arranging the air inlet pipe at the bottom, this setting makes the aeration more uniform, eliminates the need to consider the unevenness of the bottom of the membrane tank, and reduces the space occupied at the bottom of the membrane module. It is especially suitable for use when the water level in the pool is low. The overall structure is neat, compact and beautiful. Attached Figure Description

[0024] The structure of this utility model, as well as its further objectives and advantages, will be better understood from the following description taken in conjunction with the accompanying drawings, wherein like reference numerals identify like elements:

[0025] Figure 1 This is the front view of this utility model;

[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of the aeration head;

[0027] Figure 3 yes Figure 1 A three-dimensional split view viewed from the bottom up;

[0028] Figure 4 This is a schematic diagram of a gas distributor.

[0029] The components are as follows: 1. Top cover; 2. Base; 3. Positioning rod; 41. Top cover air inlet channel; 42. Hose; 43. Base air inlet channel; 44. Aeration component air inlet channel; 51. Air collection hood; 52. Reinforcing rib; 53. Aeration pipe; 531. Support ear; 54. Aeration head; 541. Aeration hole; 542. Groove; 543. Positioning hole; 55. Outer cover; 57. Air distributor; 571. Air distribution through hole; 59. Accommodation space; 6. Large cover; 7. Sleeve rod. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings.

[0031] Example 1

[0032] like Figure 1 This is a square, split, submerged hollow fiber membrane module. The submerged membrane module includes a large cover 6, a central module body, and an aeration module. The central module body includes an upper cover 1, a sleeve rod 7, and a base 2. The sleeve rod 7 is fixedly connected to the upper cover 1 and the base 2 as a whole. The feature is that a positioning rod 3 is provided inside the sleeve rod 7, there is a gap between the positioning rod 3 and the sleeve rod 7, and the sleeve rod 7 can be removed from the positioning rod 3; the two ends of the positioning rod 3 are provided with threads.

[0033] The large cover 6 is provided with a channel for the positioning rod 3 to pass through. The upper cover 1 and the base 2 are provided with a channel for the sleeve rod 7 to be fixed. The outer shell 55 of the aeration component is provided with a threaded hole that matches the bottom thread of the positioning rod 3. The lower part of the positioning rod 3 passes through the large cover 6, the upper cover 1, and the base 2 in sequence and is threadedly connected to the outer shell 55 of the aeration component. The upper part of the positioning rod 3 passes through the large cover 6 and is tightened by a nut.

[0034] Positioning rod 3 and sleeve rod 7 are made of fiberglass or stainless steel, or other materials can be selected.

[0035] Preferably, there are 4 positioning rods 3. When the immersion membrane module is square columnar, the 4 positioning rods 3 are installed at the four corners of the top cover. The number of positioning rods 3 can also be 2-3, and it can also be applied to membrane modules of other shapes besides square columnar.

[0036] This detachable, modular structure eliminates the need to drain the water tank when replacing the membrane module body. Simply loosen the nut at the large cover 6, pull the middle module body up along the positioning rod, and replace only the middle module body. Lower the new middle module body down along the positioning rod, pass the four holes of the large cover 6 through the positioning rod, and secure it tightly with nuts. The replacement of the new module is then complete. This not only makes the operation convenient but also significantly reduces the production and replacement costs of the membrane housing.

[0037] The split structure of this invention is not only applicable to submerged hollow fiber membrane modules, but can also be applied to other types of membrane modules as appropriate.

[0038] Example 2

[0039] The submersible membrane module includes a large cover 6, a central module body, and an aeration module. The central module body includes an upper cover 1, a sleeve 7, and a base 2. The sleeve 7 is fixedly connected to the upper cover 1 and the base 2 as a single unit. The submersible membrane module also includes an air inlet channel, which includes a large cover air inlet channel 41, an upper cover air inlet channel 41, a hose 42, and a base air inlet channel 43 connected in sequence. The large cover air inlet channel passes through the large cover 6, the upper cover air inlet channel 41 passes through the upper cover 1, and the base air inlet channel 43 passes through the base 2. The hose 42 connects the upper cover air inlet channel 41 and the base air inlet channel 43. The hose 42 can be a smooth hose or a corrugated hose. When the submersible membrane module is transported or handled, the hose 42 can prevent the inlet channel from being damaged by collision.

[0040] The submerged membrane module also includes an aeration component fixed to the base 2. The aeration component includes an outer cover 55, on which an aeration component air inlet channel 44 is provided, which communicates with the air inlet channel 43 of the base. The aeration component air inlet channel 44 extends through the top of the outer cover 55. The aeration component air inlet channel 44 is connected to an elbow to guide the gas to the gas collection hood.

[0041] The air inlet channel extends from the top cover of the membrane module to the aeration module. Compared to existing technologies that arrange the air inlet pipes at the bottom of the aeration module, this design eliminates the need to consider unevenness at the bottom of the membrane tank, allowing for uniform aeration without leveling. It also reduces the space occupied at the bottom of the membrane module, making it particularly suitable for use in tanks with low water levels. Furthermore, the overall structure is neat, compact, and aesthetically pleasing. The separate air intake and outlet from the top also prevents uneven air intake caused by uneven water levels.

[0042] A positioning rod 3 is provided inside the sleeve rod 7. There is a gap between the positioning rod 3 and the sleeve rod 7, and the sleeve rod 7 can be removed from the positioning rod 3. The two ends of the positioning rod 3 are provided with threads. The large cover 6 is provided with a channel for the positioning rod 3 to pass through. The upper cover 1 and the base 2 are provided with a channel for fixing the sleeve rod 7. The outer shell 55 of the aeration component is provided with a threaded hole that matches the bottom thread of the positioning rod 3. The lower part of the positioning rod 3 passes through the large cover 6, the upper cover 1, and the base 2 in sequence and is threadedly connected to the outer shell 55 of the aeration component. The upper part of the positioning rod 3 passes through the large cover 6 and is tightened by a nut.

[0043] Preferably, the positioning rod 3 and the sleeve rod 7 are made of fiberglass or stainless steel, but other materials can also be selected.

[0044] Preferably, there are 4 positioning rods 3. When the immersion membrane module is square columnar, the 4 positioning rods 3 are installed at the four corners of the top cover. The number of positioning rods 3 can also be 2-3, and it can also be applied to membrane modules of other shapes besides square columnar.

[0045] like Figure 1 and Figure 3 The outer cover 55 has a top and a side wall. The top of the outer cover 55 is fixedly connected to the base 2, and the bottom of the outer cover 55 is open.

[0046] Preferably, the inner or outer wall of the outer cover 55 is provided with reinforcing ribs 52. Figure 1 The inner wall of the outer cover 55 is shown to have reinforcing ribs 52.

[0047] The aeration assembly also includes an air collection hood 51 fixed to the lower surface of the top of the outer cover 55 and an aeration pipe 53 located inside the air collection hood 51. The upper end of the aeration pipe 53 penetrates the top of the outer cover. There is a gap between the top of the air collection hood 51 and the outer cover. The lower part of the air collection hood 51 has a drain hole for quickly draining the water inside the air collection hood 51. Otherwise, the water inside the air collection hood 51 can only be drained from the upper part of the air collection hood 51. The bottom of the aeration pipe 53 is connected to the air collection hood 51.

[0048] Preferably, the outer wall of the aeration pipe 53 is fixed with a support ear 531 to maintain a stable relative position between the air collecting hood 51 and the aeration pipe 53, and to prevent the air collecting hood 51 and the aeration pipe 53 from being deformed or displaced due to uneven water pressure or air pressure.

[0049] Preferably, the upper end of the aeration pipe 53 is connected to the air distributor 57, such as... Figure 4The air distributor 57 is located between the base 2 and the outer cover 55 of the aeration assembly. More preferably, the top of the outer cover 55 has a receiving space 59 that matches the shape of the air distributor 57 to accommodate the air distributor 57, avoiding excessive occupation of the overall longitudinal space and making the longitudinal structure more compact. An air distribution channel is provided on the lower surface of the air distributor 57, and an air distribution through hole 571 is provided at the outlet of the air distribution channel. An aeration head 54 is fixed at the upper end of the air distribution through hole 571. The air distributor 57 is a four-part air distributor 57, and the shape and structure of the air distributor 57 can also adopt other existing forms.

[0050] Preferred, such as Figure 2 As shown, the aeration head 54 has a hollow conical or cylindrical body. The top of the body is closed, and aeration holes 541 are provided on the side walls. Preferably, there are four aeration holes 541, which can aerate in four directions. The closed top of the body and the side outlet of the body can prevent sludge or pollutants from falling and blocking the aeration holes 541. More preferably, the top of the body is expanded to block sludge or pollutants and prevent sludge or pollutants from falling and blocking the aeration holes 541.

[0051] Preferably, the outer wall of the aeration head 54 is provided with a groove 542. When resin is poured between the central component body and the base 2, the groove 542 can increase the firmness between the aeration head 54 body and the resin and prevent delamination.

[0052] Preferably, the bottom outer edge of the aeration head 54 is provided with a positioning hole 543, and the air distributor 57 is snapped into the positioning hole 543.

[0053] The principle of this invention is as follows: The air inlet channel is connected to an external air source. Gas enters the air collection hood 51 from the top and gradually accumulates and compresses inside. The increasing amount of gas causes the water inside the air collection hood 51 to be discharged from the drain hole at the bottom of the hood. The gas-liquid interface gradually moves downward until the gas enters the aeration pipe 53. After entering the aeration pipe 53, the gas forms a siphon effect, causing the gas to quickly reach the gas distributor and aeration head. The aeration head releases large bubbles, which wash and shake the hollow fiber membrane fibers, thereby removing pollutants and sludge, cleaning the membrane fibers, improving the membrane module's antifouling resistance, and extending its service life. The intermittent generation of large bubbles causes the membrane fibers to shake, reducing adhesion to the surface of the hollow fiber membrane and improving the performance and lifespan of the membrane module. The siphon effect causes liquid to rush into the gas collection hood rapidly. This repeated action creates pulsed large bubbles that scrub the membrane fibers. The bursting of these large bubbles causes local turbulence in the fluid, generating shear force and disturbance force on the surface of the membrane fibers. The larger the bubble, the greater the impact force, which in turn achieves a better shaking and cleaning effect on the membrane fibers.

[0054] The technical content and features of this utility model have been disclosed above. However, it is understood that, under the inventive concept of this utility model, those skilled in the art can make various changes and improvements to the above structure, including combinations of the technical features disclosed or claimed herein, as well as other combinations that explicitly include these features. All such modifications and / or combinations fall within the technical field to which this utility model pertains and are within the protection scope of the claims of this utility model.

Claims

1. A submersible membrane module, comprising a large cover (6), a central module body, and an aeration module, wherein the central module body comprises an upper cover (1), a sleeve (7), and a base (2), the sleeve (7) being fixedly connected to the upper cover (1) and the base (2) as a single unit, characterized in that: A positioning rod (3) is provided inside the sleeve rod (7), there is a gap between the positioning rod (3) and the sleeve rod (7) and the sleeve rod (7) can be removed from the positioning rod (3); the two ends of the positioning rod (3) are provided with threads; The large cover (6) is provided with a channel for the positioning rod (3) to pass through. The upper cover (1) and the base (2) are provided with a channel for the sleeve rod (7) to be fixed. The outer cover (55) of the aeration component is provided with a threaded hole that matches the bottom thread of the positioning rod (3). The lower part of the positioning rod (3) passes through the large cover (6), the upper cover (1), and the base (2) in sequence and is then threadedly connected to the outer cover (55) of the aeration component. The upper part of the positioning rod (3) passes through the large cover (6) and is then tightened by a nut.

2. The submersible membrane module as described in claim 1, characterized in that: The positioning rod (3) and / or sleeve rod (7) are made of fiberglass or stainless steel.

3. The submersible membrane module as described in claim 2, characterized in that: When the submerged membrane module is square-shaped, there are 4 positioning rods (3).

4. The submersible membrane module as described in any one of claims 1-3, characterized in that: The submerged membrane module also includes an air intake channel, which includes a large cover air intake channel, an upper cover air intake channel (41), a hose (42) and a base air intake channel (43) connected in sequence. The large cover air intake channel passes through the large cover (6), the upper cover air intake channel (41) passes through the upper cover (1), and the base air intake channel (43) passes through the base (2).

5. The submersible membrane module as described in claim 4, characterized in that: The hose (42) is a smooth hose or a corrugated hose.

6. The submersible membrane module as described in claim 5, characterized in that: The outer cover (55) of the aeration component has a top and a side wall. The top of the outer cover (55) is fixedly connected to the base (2). The bottom of the outer cover (55) is open. An aeration component air inlet channel (44) connected to the air inlet channel (43) of the base is provided on the outer cover (55). The aeration component air inlet channel (44) passes through the top of the outer cover (55).

7. The submersible membrane module as described in claim 6, characterized in that: The aeration assembly also includes an air collection hood (51) fixed to the lower surface of the top of the outer cover (55) and an aeration pipe (53) located inside the air collection hood (51). The upper end of the aeration pipe (53) penetrates the top of the outer cover (55). There is a gap between the top of the air collection hood (51) and the outer cover (55). The lower part of the air collection hood (51) has a drain hole. The bottom of the aeration pipe (53) is connected to the air collection hood (51).

8. The submersible membrane module as described in claim 7, characterized in that: The outer wall of the aeration pipe (53) is fixed with a support ear (531) to maintain a stable relative position between the air collection hood (51) and the aeration pipe (53).

9. The submersible membrane module as described in claim 8, characterized in that: The upper end of the aeration pipe (53) is connected to the air distributor (57), which is located between the base (2) and the outer cover (55) of the aeration assembly. The top of the outer cover (55) has a receiving space (59) that matches the shape of the air distributor (57) for accommodating the air distributor (57).

10. The submersible membrane module as described in claim 9, characterized in that: A gas distribution channel is provided on the lower surface of the gas distributor (57), and a gas distribution through hole (571) is provided at the outlet of the gas distribution channel. An aeration head (54) is fixed at the upper end of the gas distribution through hole.

Images