Column type membrane aeration box

Abstract

The utility model relates to the technical field of ultrafiltration membrane group aeration, in particular to a column type membrane aeration box which comprises an ultrafiltration membrane device, one end of the ultrafiltration membrane device is fixedly connected with a lower sealing head cover through the matching of a fixing hoop, and an aeration box assembly is arranged in the lower sealing head cover; the aeration box assembly comprises an aeration box body movably clamped to the upper end face of the interior of the lower end socket cover, a matching column is arranged in the center of the aeration box body, a center pipe is fixedly connected to the lower end face of the aeration box body, and the matching column and the center pipe are matched with each other to form an air storage assembly. According to the utility model, 1.8-2.0 L of gas can be released at one time through the matching of the central pipe and the aeration box main body, and then the air inflow of each ultrafiltration membrane group is ensured to be basically consistent through the flow divider, so that an instant large bubble group can be generated, the dirt on the surface of a membrane wire can be better washed, and the washing effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrafiltration membrane group aeration, in particular to a columnar membrane aeration box. Background Art

[0002] The aeration method of the ultrafiltration membrane group in traditional industrial treatment is to use direct bottom air intake, and the amount of exhaust is the same as the amount of air intake, which will cause uneven air intake of multiple aeration holes, poor aeration effect, and small membrane gas vibration. In addition, the ultrafiltration membrane group of traditional industrial treatment is generally composed of multiple (30-100) ultrafiltration membrane groups, but the air intake pipe is generally a main pipe that branches into multiple air pipes to connect the bottom air inlet of the ultrafiltration membrane group. Since the air pipe of each membrane group is not flow-limited, it is easy to cause some membrane groups to have a large air intake and some membrane groups to have a small air intake. Therefore, the membrane group with a small air intake has a poor aeration effect, and sludge impurities cannot be discharged, affecting its service life.

[0003] For example, Chinese patent number "CN116036872A" discloses a high-efficiency pulse aeration pressure type ultrafiltration membrane assembly, in which a pulse aerator is arranged in an air chamber; the pulse aerator comprises a pulse aerator body and an aeration tube; one end of the aeration tube extends out of the terminal end and is connected to the inside of the shell; the other end of the aeration tube is connected to the pulse aerator body, and its opening is above the liquid level for forming the pulse. The high-efficiency pulse aeration pressure type ultrafiltration membrane assembly applied for has a large instantaneous aeration intensity due to the design of the pulse aerator, and the effect is more obvious in the air scrubbing and air-water backwashing processes.

[0004] The device enhances the intensity of aeration, but the device does not have a diverter structure. At the same time, the structure of the aeration component is unstable, which affects the effect of aeration. Therefore, improvements are proposed. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art that the air intake of the aeration holes is uneven and the air pipes of the membrane groups are not flow-limited, which easily results in some membrane groups having a large air intake and some having a small air intake. Therefore, the membrane groups with small air intakes have poor aeration effects, sludge impurities cannot be discharged, and their service life is affected. A column membrane aeration box is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A column membrane aeration box is designed, comprising an ultrafiltration membrane device, one end of the ultrafiltration membrane device is fixedly connected to a lower head cover through the cooperation of a fixing clamp, and an aeration box assembly is arranged inside the lower head cover;

[0008] The aeration box assembly includes an aeration box body movably engaged with the upper end surface of the lower head cover, a matching column is provided at the center position of the aeration box body, the lower end surface of the aeration box body is fixedly connected to a center tube, the matching column and the center tube cooperate with each other to form an air storage assembly, the upper end surface of the aeration box body is fixedly connected to a diversion assembly that cooperates with the air storage assembly, and the lower end surface of the lower head cover is provided with an air intake assembly that cooperates with the air storage assembly.

[0009] Preferably, the flow diverter assembly comprises a flow diverter fixedly mounted on the upper end surface of the aeration box body, a gas outlet is formed at the flow diverter end, and a gas guide column is fixedly engaged on the outer end surface of the gas outlet.

[0010] Preferably, the upper end surface of the aeration box body is provided with a plurality of fixing blocks, the angles of the diverter are provided with a plurality of fixing grooves, and the fixing blocks are fixedly connected to the fixing grooves by means of screws.

[0011] Preferably, the air intake assembly includes a one-way valve threadedly connected to the lower end surface of the lower head cover, and a flow-limiting solenoid valve is fixedly installed below the one-way valve.

[0012] Preferably, the gas storage assembly includes a pressure chamber located inside the matching column, the outside of the central tube cooperates with the aeration box body to form an gas storage chamber, and the lower end surface of the central tube is provided with a blocking portion connecting the air intake assembly and the pressure chamber.

[0013] Preferably, a plurality of groups of symmetrical abutment plates are fixedly connected to the outer end surface of the central tube, the lower ends of the abutment plates movably abut against the lower head cover, two groups of symmetrical connecting blocks are fixedly connected to the outer end surface of the central tube, a limiting rod cooperating with the connecting block is fixedly connected to the lower end surface of the aeration box body, and the limiting rod is fixedly connected to the connecting block by screws.

[0014] Preferably, a plurality of groups of retaining pieces are fixedly connected to the outer end surface of the aeration box body, a plurality of groups of retaining notches are provided at the bottom of the aeration box body, and the retaining pieces cooperate with the retaining notches to fix the aeration box body so that it cannot rotate.

[0015] Preferably, a raw water inlet is provided at one end of the aeration box assembly of the ultrafiltration membrane device, and a drainage outlet and a clean water outlet cooperating with the raw water inlet are provided at the other end of the ultrafiltration membrane device.

[0016] The utility model proposes a column membrane aeration box, which has the beneficial effect that: through the cooperation of the central tube and the aeration box body, an air storage bin and a pressure bin are formed inside the lower head cover, and the gas flow entering the air storage bin can be controlled by the cooperation of the current limiting solenoid valve, and the gas enters the air storage bin through the one-way valve, and the air storage bin can store 1.8-2.0L of gas at a time. When the gas in the air storage bin is full of the retaining wall of the central tube, all the gas will be squeezed to the central tube instantly, and then enter the diverter through the matching column. With the cooperation of the diverter, the gas is evenly divided into multiple air guide columns, and the air guide columns are respectively connected to each ultrafiltration membrane group, so as to ensure that the air intake volume of the ultrafiltration membrane group channel is basically the same. The device generates continuous and large bubbles by setting an aeration box component with a stable structure, increases the rising force of the bubbles, greatly increases the water flow and the vibration of the membrane wire, effectively separates the sludge attached to the surface of the membrane wire during the flushing and backwashing process, and restores the flux, thereby greatly extending the life of the ultrafiltration membrane group. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a column-type membrane aeration box proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of an aeration box assembly of a columnar membrane aeration box proposed by the utility model;

[0019] Figure 3 This is a schematic cross-sectional structure diagram of an aeration box assembly of a columnar membrane aeration box proposed by the utility model;

[0020] Figure 4 This is a schematic diagram of the explosion structure of an aeration box assembly of a columnar membrane aeration box proposed by the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of an air storage component of a columnar membrane aeration box proposed by the utility model;

[0022] Figure 6 The utility model is a schematic diagram of the diverter structure of a column membrane aeration box.

[0023] In the figure: 1. ultrafiltration membrane device; 101. clean water outlet; 102. drain outlet; 103. raw water inlet; 2. aeration box assembly; 3. lower head cover; 4. aeration box body; 401. positioning piece; 402. fixing block; 403. matching column; 404. limiting rod; 405. positioning notch; 5. center tube; 501. abutment piece; 502. connecting block; 503. blocking part; 6. diverter; 601. air outlet; 602. fixing groove; 7. air guide column; 8. air storage chamber; 801. pressure chamber; 9. one-way valve; 10. current limiting solenoid valve. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Reference Figure 1-6 A column membrane aeration box comprises an ultrafiltration membrane device 1, one end of the ultrafiltration membrane device 1 is fixedly connected to a lower head cover 3 through a fixing clamp, and an aeration box assembly 2 is arranged inside the lower head cover 3;

[0026] The aeration box assembly 2 includes an aeration box body 4 movably engaged with the upper end surface of the lower head cover 3, a matching column 403 is provided at the center position of the aeration box body 4, the lower end surface of the aeration box body 4 is fixedly connected with a center tube 5, the matching column 403 and the center tube 5 cooperate with each other to form an air storage assembly, the upper end surface of the aeration box body 4 is fixedly connected with a diversion assembly that cooperates with the air storage assembly, and the lower end surface of the lower head cover 3 is provided with an air intake assembly that cooperates with the air storage assembly. Through the cooperation of the center tube 5 and the aeration box body 4, a gas storage assembly is formed inside the lower head cover 3, which can store a large amount of gas and release it together, thereby greatly improving the aeration effect of the device, thereby discharging sludge impurities and improving the service life of the ultrafiltration membrane device 1.

[0027] The diverter assembly includes a diverter 6 fixedly mounted on the upper end surface of the aeration box body 4. An air outlet 601 is provided at the diverter end of the diverter 6. An air guide column 7 is fixedly engaged on the outer end surface of the air outlet 601. By setting the diverter 6, the air intake volume of each channel is basically consistent.

[0028] The upper end surface of the aeration box body 4 is provided with multiple sets of fixing blocks 402, and the angles of the diverter 6 are provided with multiple sets of fixing grooves 602. The fixing blocks 402 and the fixing grooves 602 are fixedly connected by screws, and the diverter 6 can be fixed by the fixing blocks 402 and the fixing grooves 602.

[0029] The air intake assembly includes a one-way valve 9 threadedly connected to the lower end surface of the lower head cover 3, and a flow limiting solenoid valve 10 is fixedly installed below the one-way valve 9, so that the flow limiting solenoid valve 10 and the one-way valve 9 are integrated at the bottom of the ultrafiltration membrane group. By setting the flow limiting solenoid valve, the air intake of a single ultrafiltration membrane device 1 can be controlled and the flow can be limited. The flow limiting solenoid valve 10 is under an air pressure of 0.1MPa: the flow rate in the closed state is 50-80L / min, and the flow rate in the open state is 150-250L / min. Therefore, as long as the air pressure of the front main pipeline is stable at 0.1MPa, it can be ensured that the air intake of each ultrafiltration membrane device 1 is equal and the aeration effect is the same.

[0030] The gas storage component includes a pressure bin 801 located inside the matching column 403, and the outside of the central tube 5 cooperates with the aeration box body 4 to form an air storage bin 8. The lower end surface of the central tube 5 is provided with a blocking portion 503 connecting the air intake component and the pressure bin 801. The gas enters the air storage bin 8 from the air intake component, thereby compressing the water to enter the matching column 403. In this way, the water will block the gas from entering the matching column 403, so that the gas can be stored inside the air storage bin 8. When the gas in the air storage bin 8 is full of the retaining wall of the matching column 403, the water is completely emptied, and the gas inside the air storage bin 8 will instantly squeeze toward the matching column 403. The aeration box component 2 of the device can store 1.8-2.0L of gas at a time and discharge it instantly, thereby forming continuous larger bubbles, increasing the rising force of the bubbles, greatly increasing the water flow and the amount of membrane filament shaking, and effectively separating the sludge attached to the surface of the membrane filament during the flushing and backwashing process to restore the flux, thereby greatly extending the life of the ultrafiltration membrane group.

[0031] A plurality of symmetrical abutment sheets 501 are fixedly connected to the outer end surface of the central tube 5, and the lower ends of the abutment sheets 501 movably abut against the lower head cover 3. Two groups of symmetrical connecting blocks 502 are fixedly connected to the outer end surface of the central tube 5, and a limiting rod 404 cooperating with the connecting block 502 is fixedly connected to the lower end surface of the aeration box body 4. The limiting rod 404 and the connecting block 502 are fixedly connected by screws. The limiting rod 404 and the connecting block 502 cooperate with each other to fix the connection between the aeration box body 4 and the central tube 5, and the aeration box body 4 and the central tube 5 can be fixedly connected by the cooperation between the limiting rod 404 and the connecting block 502. The aeration box body 4 and the central tube 5 can be fixedly connected, and the abutment sheets 501 can be provided to facilitate the entry of gas into the gas storage bin 8.

[0032] A plurality of groups of locking pieces 401 are fixedly connected to the outer end surface of the aeration box body 4, and a plurality of groups of locking notches 405 are provided at the bottom of the aeration box body 4. The locking pieces 401 and the locking notches 405 cooperate with each other to fix the aeration box body 4 so that it cannot rotate. Through the cooperation between the locking pieces 401 and the locking notches 405, the aeration box body 4 and the lower head cover 3 can be fixed to prevent the aeration box body 4 from rotating or shifting inside the lower head cover 3, and at the same time facilitate the assembly of the aeration box assembly 2.

[0033] A raw water inlet 103 is provided at one end of the aeration box assembly 2 of the ultrafiltration membrane device 1, and a drainage outlet 102 and a clean water outlet 101 which cooperate with the raw water inlet 103 are provided at the other end of the ultrafiltration membrane device 1. Water is injected into the aeration box assembly 2 through the raw water inlet 103, and the water flows into the ultrafiltration membrane device 1 after filling the lower head cover 3. The filtered water is discharged from the clean water outlet 101, and the other water is discharged from the drainage outlet 102.

[0034] Working mode: When working, water is injected into the aeration box assembly 2 through the raw water inlet 103. After the water fills the lower head cover 3, it will flow into the ultrafiltration membrane device 1, and then the filtered water will be discharged from the clean water outlet 101, and the other water will be discharged from the drainage outlet 102. At this time, when the aeration box assembly 2 is injected with gas through the one-way valve 9 controlled by the current limiting solenoid valve 10, the gas will enter the gas storage bin 8 through the space formed by the abutment sheet 501, thereby compressing the water to enter the matching column 403, so that the water will block the gas from entering the matching column 403, so that the gas can be stored inside the gas storage bin 8. The gas storage bin 8 can store 1.8-2.0L of gas at a time. When the gas in the gas storage bin 8 is full of the retaining wall of the matching column 403, the water is completely emptied, and the gas inside the gas storage bin 8 will instantly squeeze toward the matching column 403, and then through the cooperation of the diverter 6, the gas will be evenly divided into multiple gas guide columns 7, and the gas guide columns 7 are respectively connected to each ultrafiltration membrane group, ensuring that the air intake volume of the ultrafiltration membrane group channel is basically the same. In this way, the device produces continuous large bubbles, increases the rising force of the bubbles, greatly increases the water flow and the vibration of the membrane wire, and effectively separates the sludge attached to the surface of the membrane wire during the flushing and backwashing process, thereby solving the problem of different lifespans of each membrane in the membrane group, and has a good use effect.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A column membrane aeration box, comprising an ultrafiltration membrane device (1), characterized in that: One end of the ultrafiltration membrane device (1) is fixedly connected to a lower head cover (3) through the cooperation of a fixing clamp, and an aeration box assembly (2) is arranged inside the lower head cover (3); The aeration box assembly (2) comprises an aeration box body (4) movably engaged with the upper end surface of the interior of the lower head cover (3); a matching column (403) is provided at the center of the aeration box body (4); the lower end surface of the aeration box body (4) is fixedly connected to a central tube (5); the matching column (403) and the central tube (5) cooperate with each other to form an air storage assembly; the upper end surface of the aeration box body (4) is fixedly connected to a flow diversion assembly that cooperates with the air storage assembly; and the lower end surface of the interior of the lower head cover (3) is provided with an air intake assembly that cooperates with the air storage assembly.

2. A column membrane aeration box according to claim 1, characterized in that: The flow splitter assembly comprises a flow splitter (6) fixedly mounted on the upper end surface of the aeration box body (4); a gas outlet hole (601) is provided at the flow splitter end of the flow splitter (6); and a gas guide column (7) is fixedly engaged on the outer end surface of the gas outlet hole (601).

3. A column membrane aeration box according to claim 2, characterized in that: The upper end surface of the aeration box body (4) is provided with a plurality of fixing blocks (402), and the angle of the flow divider (6) is provided with a plurality of fixing grooves (602), and the fixing blocks (402) and the fixing grooves (602) are fixedly connected by means of screws.

4. A column membrane aeration box according to claim 1, characterized in that: The air intake assembly comprises a one-way valve (9) threadedly connected to the lower end surface of the lower head cover (3), and a flow-limiting solenoid valve (10) is fixedly installed below the one-way valve (9).

5. A column membrane aeration box according to claim 4, characterized in that: The gas storage assembly comprises a pressure chamber (801) located inside the matching column (403); the outside of the central tube (5) cooperates with the aeration box body (4) to form an air storage chamber (8); and a blocking portion (503) connecting the air intake assembly and the pressure chamber (801) is provided on the lower end surface of the central tube (5).

6. A column membrane aeration box according to claim 5, characterized in that: A plurality of groups of symmetrical abutment sheets (501) are fixedly connected to the peripheral end surface of the central tube (5), the lower ends of the abutment sheets (501) movably abut against the lower head cover (3), two groups of symmetrical connection blocks (502) are fixedly connected to the peripheral end surface of the central tube (5), a limiting rod (404) cooperating with the connection block (502) is fixedly connected to the lower end surface of the aeration box body (4), and the limiting rod (404) is fixedly connected to the connection block (502) by means of screws.

7. The column membrane aeration box according to claim 1, characterized in that: A plurality of groups of locking pieces (401) are fixedly connected to the outer end surface of the aeration box body (4), and a plurality of groups of locking notches (405) are provided at the bottom of the aeration box body (4). The locking pieces (401) and the locking notches (405) cooperate with each other to fix the aeration box body (4) so ​​that it cannot rotate.

8. The column membrane aeration box according to claim 1, characterized in that: A raw water inlet (103) is provided at one end of the aeration box assembly (2) of the ultrafiltration membrane device (1), and a drainage outlet (102) and a clean water outlet (101) that cooperate with the raw water inlet (103) are provided at the other end of the ultrafiltration membrane device (1).

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