Flat sheet membrane aeration device

Abstract

The utility model relates to the technical field of water treatment, in particular to a flat sheet membrane aeration device which comprises a separation tank, a reaction tank, a flat sheet membrane and an aeration mechanism, the liquid output end of the separation tank is connected with the input end of the reaction tank, the output end of the reaction tank is connected with the input end of the flat sheet membrane, and the flat sheet membrane comprises a membrane pool and a membrane tower arranged in the membrane pool. The aeration mechanism comprises an air pump, an air storage tank and an air distribution disc, the air distribution disc is arranged in the membrane pool and located below the membrane tower, the output end of the air pump is connected with the input end of the air storage tank, and the output end of the air storage tank is connected with the input end of the air distribution disc; the air distribution disc comprises a disc seat, a pneumatic disc, a reset element and a ventilation pipe, through the design of the disc seat, the pneumatic disc, the reset element and the ventilation pipe, the pneumatic disc is designed to be of a floating type structure, and the air holes are formed in the side wall of the pneumatic disc, so that when ventilation is not conducted in the pneumatic disc, the pneumatic disc retracts into the disc seat, the air holes are shielded, and impurities are prevented from flowing back into the air holes.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a flat sheet membrane aeration device. Background Technology

[0002] Flat-sheet membrane aeration devices, especially flat-sheet membrane aerators, are highly efficient aeration equipment widely used in water treatment. In traditional aeration distribution systems, when shutdown occurs, the pressure difference between the salt sludge in the membrane tank and the aeration coil causes the salt sludge to easily be drawn back into the coil through the air outlet. Furthermore, since aeration is intermittent, during periods of aeration shutdown, salt sludge from the membrane tank will enter the aeration coil through the air outlet. Over time, this can easily cause blockage at the point of minimum aeration pressure, resulting in reduced aeration efficiency or even rendering the system ineffective. Utility Model Content

[0003] The technical problem this utility model aims to solve is: to overcome the problem that in the existing technology, when the aeration and air distribution system is shut down, the salt mud in the membrane tank is easily sucked back into the air distribution coil through the air outlet due to the pressure difference between the salt mud in the membrane tank and the air distribution coil, and the aeration is intermittent. When the aeration is stopped, the salt mud in the membrane tank will enter the air distribution coil through the air outlet. Over time, the point of minimum air distribution pressure is easily blocked, resulting in a decrease in aeration effect or even rendering it ineffective. Therefore, this utility model provides a flat sheet membrane aeration device.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a flat plate membrane aeration device, including a separation tank, a reaction tank, a flat plate membrane and an aeration mechanism. The separation tank is used to initially separate the salt mud in the brine. The liquid output end of the separation tank is connected to the input end of the reaction tank. The reaction tank is used to provide a reaction zone for the brine. The output end of the reaction tank is connected to the input end of the flat plate membrane. The flat plate membrane includes a membrane tank and a membrane tower arranged in the membrane tank. A refined brine connecting pipe is connected to the membrane tower. The opening of the refined brine connecting pipe extends to the outside of the membrane tank. The aeration mechanism includes an air pump, an air storage tank and an air distribution plate. The air distribution plate is arranged in the membrane tank and is located below the membrane tower. The output end of the air pump is connected to the input end of the air storage tank and the output end of the air storage tank is connected to the input end of the air distribution plate.

[0005] The air distribution plate includes a plate base, a pneumatic plate, a reset element, and an air vent. The plate base and the membrane pool are fixedly connected. The plate base is used to house the pneumatic plate, which is slidably arranged inside the plate base. The pneumatic plate has an air vent chamber. An air hole communicating with the air vent chamber is opened on the side wall of the pneumatic plate. The air vent is fixedly connected to the membrane pool. One end of the air vent passes through the plate base and extends into the air vent chamber of the pneumatic plate. One end of the reset element abuts against the inner bottom surface of the pneumatic plate, and the other end abuts against the air vent. Through the design of the plate base, the pneumatic plate, the reset element, and the air vent, the pneumatic plate is designed as a floating structure, and the air hole is opened on the side wall of the pneumatic plate. When the pneumatic plate is not vented, it retracts into the plate base, blocking the air hole and preventing impurities from flowing back into the air hole.

[0006] To address the environmental pollution caused by exhaust gas generated after the use of flat sheet membranes, the aeration device further includes an exhaust gas treatment tower, the input end of which is connected to the top surface of the membrane tank via a pipeline.

[0007] To address the issue of excessive impurities carried within the pipeline, the aeration device further includes spray heads, which are arranged within the pipeline connecting the exhaust gas treatment tower and the membrane tank.

[0008] To address the issue of a fixed air hole position and a single area of ​​gas distribution due to the fixed position of the pneumatic disc, the following further details are provided: a mounting block is arranged on the outer wall of the outlet port of the vent pipe; a pressure block is arranged inside the vent chamber of the pneumatic disc; the pressure block is located between the mounting block and the pneumatic disc; one end of the reset element is fixedly connected to the pressure block, and the other end is fixedly connected to the mounting block.

[0009] Further, the pneumatic disc has a guide block protruding from its top surface, and a guide groove for accommodating the guide block is provided on the bottom surface of the pressure block. The guide block is slidably arranged in the guide groove, and the top surface of the guide block is a wedge surface.

[0010] It further includes a venting tube and a pneumatic disc sliding connection.

[0011] It further includes the air holes on the pneumatic disc being spaced out along its circumference.

[0012] The beneficial effects of this utility model are as follows: The flat plate membrane aeration device provided by this utility model, through the design of the plate base, pneumatic plate, reset element and air pipe, the pneumatic plate is designed as a floating structure and the air holes are opened on the side wall of the pneumatic plate, so that when the pneumatic plate is not ventilated, the pneumatic plate retracts into the plate base, covering the air holes to prevent impurities from flowing back into the air holes. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the flat sheet membrane of this utility model;

[0016] Figure 3 This is a utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0017] In the diagram: 1. Separation tank, 2. Reaction tank, 3. Flat sheet membrane, 31. Membrane tank, 32. Membrane tower, 33. Refined brine connecting pipe, 4. Aeration mechanism, 41. Air pump, 42. Air storage tank, 43. Air distribution plate, 431. Plate base, 432. Pneumatic plate, 4321. Ventilation chamber, 4322. Air hole, 4323. Pressure block, 4324. Guide block, 43241. Guide groove, 433. Reset element, 434. Ventilation pipe, 4341. Mounting block, 44. Spray head, 5. Tail gas treatment tower. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0019] like Figure 1 This is a schematic diagram of the structure of this utility model. A flat-plate membrane aeration device includes a separation tank 1, a reaction tank 2, a flat-plate membrane 3, and an aeration mechanism 4. The separation tank 1 is used to initially separate the salt mud in the brine. The liquid output end of the separation tank 1 is connected to the input end of the reaction tank 2. The reaction tank 2 is used to provide a reaction zone for the brine. The output end of the reaction tank 2 is connected to the input end of the flat-plate membrane 3. The flat-plate membrane 3 includes a membrane tank 31 and a membrane tower 32 arranged in the membrane tank 31. A refined brine connecting pipe 33 is connected to the membrane tower 32. The opening of the refined brine connecting pipe 33 extends to the outside of the membrane tank 31. The aeration mechanism 4 includes an air pump 41, an air storage tank 42, and an air distribution plate 43. The air distribution plate 43 is arranged in the membrane tank 31 and is located below the membrane tower 32. The output end of the air pump 41 is connected to the input end of the air storage tank 42, and the output end of the air storage tank 42 is connected to the input end of the air distribution plate 43.

[0020] like Figure 2 , 3As shown, the air distribution plate 43 includes a plate base 431, a pneumatic plate 432, a reset element 433, and an air pipe 434. The plate base 431 and the membrane pool 31 are fixedly connected. The plate base 431 is used to accommodate the pneumatic plate 432, which is slidably arranged in the plate base 431. The pneumatic plate 432 has an air cavity 4321 inside, and an air hole 4322 communicating with the air cavity 4321 is opened on the side wall of the pneumatic plate 432. The air pipe 434 is fixedly connected to the membrane pool 31, and one end of the air pipe 434 passes through the plate base 431 and extends to the air cavity 31. Inside the ventilation chamber 4321 of the moving disk 432, one end of the reset element 433 abuts against the inner bottom surface of the pneumatic disk 432, and the other end abuts against the ventilation pipe 434. Through the design of the disk base 431, the pneumatic disk 432, the reset element 433, and the ventilation pipe 434, the pneumatic disk 432 is designed as a floating structure, and the air hole is opened on the side wall of the pneumatic disk 432. When the pneumatic disk 432 is not ventilated, the pneumatic disk 432 retracts into the disk base 431, blocking the air hole 4322 to prevent impurities from flowing back into the air hole 4322.

[0021] like Figure 1 As shown, the aeration device also includes an exhaust gas treatment tower 5. The input end of the exhaust gas treatment tower 5 is connected to the top surface of the membrane tank 31 through a pipeline. The exhaust gas treatment tower 5 uses a specific adsorbent or absorbent to fully contact and react with the harmful substances in the exhaust gas, converting them into harmless substances or reducing their concentration, thereby achieving the purpose of purifying the exhaust gas.

[0022] like Figure 2 , 3 As shown, the aeration device also includes a spray head 44, which is arranged in the pipeline connecting the tail gas treatment tower 5 and the membrane tank 31. The spray head 44 sprays water to initially remove the tail gas output from the flat sheet membrane 3.

[0023] like Figure 2 , 3 As shown, a mounting block 4341 is arranged on the outer wall of the output port of the vent pipe 434, and a pressure block 4323 is arranged in the vent chamber 4321 of the pneumatic disc 432. The pressure block 4323 is located between the mounting block 4341 and the pneumatic disc 432. One end of the reset element 433 is fixedly connected to the pressure block 4323, and the other end is fixedly connected to the mounting block 4341. The reset element 433 is a spring, which provides power for the reset of the pneumatic disc 432, so that the pneumatic disc 432 quickly retracts into the disc base 431.

[0024] A guide block 4324 protrudes from the top surface of the pneumatic disc 432, and a guide groove 43241 for accommodating the guide block 4324 is provided on the bottom surface of the pressure block 4323. The guide block 4324 is slidably arranged in the guide groove 43241. The top surface of the guide block 4324 is a wedge surface. Through the design of the guide groove 43241 and the wedge surface on the guide block 4324, the pneumatic disc 432 can more easily rotate circumferentially to change the position of the air hole 4322 in the air-permeable state, so that the input gas is evenly distributed and the blind spot of the aeration scouring the surface of the membrane element is avoided.

[0025] The vent pipe 434 and the pneumatic disc 432 are slidably connected, allowing the pneumatic disc 432 to move axially and rotate circumferentially.

[0026] The vent holes 4322 on the pneumatic disc 432 are distributed at intervals along its circumference, so that the vent holes 4322 are evenly distributed.

[0027] Working principle:

[0028] The brine, after preliminary treatment in separation tank 1 and reaction tank 2, enters the flat sheet membrane 3. The brine is then filtered through membrane tower 32. An external pump draws the refined brine filtered by membrane tower 32 through refined brine connection pipe 33. During this process, aeration mechanism 4 starts to supply air to flat sheet membrane 3, i.e., air pump 41 starts. The gas output by air pump 41 enters the ventilation chamber 4321 of pneumatic disc 432 through ventilation pipe 434. Under gas pressure, pneumatic disc 432 extends out of disc base 321. At this time, gas enters membrane tank 31 through air hole 4322 to remove salt mud adhering to membrane tower 32.

[0029] When there is no air supply or the gas pressure is insufficient, the pneumatic disc 432 enters the disc base 431 under the combined action of its own weight and the elastic force of the reset element 433, thereby blocking the air holes and preventing the salt mud in the membrane pool 31 from entering the pneumatic disc 432 through the air holes 4322.

[0030] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A flat-sheet membrane aeration device, characterized in that, The system includes a separation tank (1), a reaction tank (2), a flat sheet membrane (3), and an aeration mechanism (4). The separation tank (1) is used to initially separate the salt mud from the brine. The liquid output end of the separation tank (1) is connected to the input end of the reaction tank (2). The reaction tank (2) is used to provide a reaction zone for the brine. The output end of the reaction tank (2) is connected to the input end of the flat sheet membrane (3). The flat sheet membrane (3) includes a membrane tank (31) and a membrane tower (32) arranged in the membrane tank (31). The upper part is connected to a brine connecting pipe (33), the opening of which extends to the outside of the membrane tank (31). The aeration mechanism (4) includes an air pump (41), an air storage tank (42), and an air distribution plate (43). The air distribution plate (43) is arranged inside the membrane tank (31) and is located below the membrane tower (32). The output end of the air pump (41) is connected to the input end of the air storage tank (42), and the output end of the air storage tank (42) is connected to the input end of the air distribution plate (43). The air distribution plate (43) includes a plate base (431), a pneumatic plate (432), a reset element (433), and a vent pipe (434). The plate base (431) and the membrane tank (31) are fixedly connected. The plate base (431) is used to house the pneumatic plate (432). The pneumatic plate (432) is slidably arranged in the plate base (431). The pneumatic plate (432) has a venting cavity (4321). An air hole (4322) communicating with the ventilation chamber (4321) is opened on the side wall of the disc (432). The ventilation pipe (434) and the membrane pool (31) are fixedly connected. One end of the ventilation pipe (434) passes through the disc base (431) and extends into the ventilation chamber (4321) of the pneumatic disc (432). One end of the reset element (433) abuts against the bottom surface of the pneumatic disc (432), and the other end abuts against the ventilation pipe (434).

2. The flat-sheet membrane aeration device as described in claim 1, characterized in that: The aeration device also includes an exhaust gas treatment tower (5), the input end of which is connected to the top surface of the membrane tank (31) via a pipeline.

3. The flat-plate membrane aeration device as described in claim 2, characterized in that: The aeration device also includes a spray head (44) arranged in a pipeline connecting the tail gas treatment tower (5) and the membrane tank (31).

4. The flat-plate membrane aeration device as described in claim 1, characterized in that: An installation block (4341) is arranged on the outer wall of the output port of the vent pipe (434). A pressure block (4323) is arranged in the vent chamber (4321) of the pneumatic disc (432). The pressure block (4323) is located between the installation block (4341) and the pneumatic disc (432). One end of the reset element (433) is fixedly connected to the pressure block (4323), and the other end is fixedly connected to the installation block (4341).

5. The flat-sheet membrane aeration device as described in claim 4, characterized in that: The pneumatic disc (432) has a guide block (4324) protruding from its inner top surface. The bottom surface of the pressure block (4323) has a guide groove (43241) for accommodating the guide block (4324). The guide block (4324) is slidably arranged in the guide groove (43241). The top surface of the guide block (4324) is a wedge surface.

6. The flat-sheet membrane aeration device as described in claim 1, characterized in that: The vent pipe (434) and the pneumatic disc (432) are slidably connected.

7. The flat-sheet membrane aeration device as described in claim 1, characterized in that: The air holes (4322) on the pneumatic disc (432) are distributed at intervals along its circumference.

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