A cyclone aeration device for sewage treatment

Abstract

The utility model discloses a cyclone aeration equipment for sewage treatment, including hollow base, screen cover, air injection pipe. The cyclone aeration equipment for sewage treatment, the bottom assembly type fixed mounting of hollow base has screen cover, is equipped with the direct current channel in the hollow base, and the side of direct current channel is fixedly connected with first air inlet pipe, and the bottom surface fixedly connected with the air injection pipe of inserting into screen cover downwards of direct current channel, and the top side wall fixedly connected with second air inlet pipe of air injection pipe, and second air inlet pipe and first air inlet pipe all fixedly penetrate hollow base and are fixedly connected with extension pipe, and the top end common fixedly connected with the three -way pipe of extension pipe, intercept big particle size impurities through the screen cover of hollow base bottom, avoid the damage of impurities to enter equipment inside component, reduce operating efficiency, and through the air injection pipe of switchable gas circuit simultaneously, utilize the valve switch high pressure gas flow direction, carry out reverse washing to screen cover, remove the adhering sundries, and the filter screen blockage problem is solved from the source.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, specifically a vortex aeration device for wastewater treatment. Background Technology

[0002] Cyclone aeration equipment is the core equipment of biochemical treatment units for municipal and industrial wastewater treatment. With its efficient gas-liquid mass transfer and strong mixing characteristics, it is widely used in activated sludge treatment processes and is a key piece of equipment to ensure the effect of aerobic biochemical treatment.

[0003] Current mainstream cyclone aeration equipment mostly adopts a bottom-open suction structure, directly drawing in a mixture of sewage and sludge, with the medium discharging from the top after cyclone treatment. This structure lacks effective impurity protection at the bottom, making it highly susceptible to drawing in large-diameter solid impurities, causing blockage of the equipment flow channels, impeller wear, a sharp drop in operating efficiency, and even shutdown failures. Existing improvements often involve adding conventional filters to the suction inlet, which can intercept large particles, but are easily clogged by sludge and fibrous debris. Therefore, a cyclone aeration device for sewage treatment is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a cyclone aeration device for sewage treatment, so as to solve the problem mentioned in the background art that the bottom open suction structure of the cyclone aeration device has no effective protection against impurities, which makes it easy to suck in large-diameter solid impurities, causing blockage of the equipment flow channel, impeller wear, sharp drop in operating efficiency, and even shutdown failure. Although adding a conventional filter screen can intercept large-particle impurities, it is easily blocked by sludge and fibrous debris.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A cyclone aeration device for sewage treatment includes a hollow base. A mesh cover is fixedly installed at the bottom of the hollow base. A direct current channel is provided inside the hollow base. A first air inlet pipe is fixedly connected to the side of the direct current channel. A jet pipe inserted downward into the mesh cover is fixedly connected to the bottom surface of the direct current channel. A second air inlet pipe is fixedly connected to the top side wall of the jet pipe. Both the second air inlet pipe and the first air inlet pipe are fixedly connected through the hollow base and are fixedly connected to an extension pipe. A tee pipe is fixedly connected to the top of the extension pipe. A connecting pipe is fixedly connected to the third port of the tee pipe. Valves are fixedly installed at both ports where the tee pipe connects to the extension pipe. A hollow support is fixedly connected to the inner top of the hollow base. An impeller is rotatably installed on the bottom surface of the hollow support.

[0006] As a further embodiment of this utility model: a fixing column is fixedly connected to the top surface of the impeller, and triangular cutting columns are uniformly fixedly installed on the outer side of the fixing column.

[0007] As a further improvement of this utility model: a hollow disc is fixedly connected to the outer side of the bottom end of the fixed column, and the hollow disc slides in contact with the inner wall of the hollow base.

[0008] As a further improvement of this utility model, the extension tubes are fixed together by a connecting rod.

[0009] As a further embodiment of this utility model: the hollow base includes an upper cylinder and a lower cylinder.

[0010] As a further embodiment of this utility model: the bottom end of the lower cylinder is fixedly connected to an outer expansion cover, and the upper cylinder and the lower cylinder, as well as the outer expansion cover and the mesh cover, are fixedly installed by bolts. The impeller is located in the upper cylinder, and the DC channel is located in the lower cylinder.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses a mesh cover at the bottom of a hollow base to intercept large-diameter impurities, preventing impurities from entering the equipment and damaging components or reducing operating efficiency. At the same time, the air jet pipe with switchable air path uses valves to switch the direction of high-pressure airflow to reverse flush the mesh cover, remove attached debris, solve the filter clogging problem from the source, and prevent the equipment from stopping due to blockage.

[0012] 2. The hollow base of this utility model adopts a split design of upper and lower cylinders. All core components are fixed by bolt assembly, which can quickly disassemble the equipment into multiple independent parts, so that the internal flow channels, impellers and other structures are fully exposed, which greatly reduces the difficulty of cleaning, maintenance and component replacement, and reduces operation and maintenance time and cost. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a vortex aeration device for wastewater treatment.

[0014] Figure 2 This is a partial structural diagram of a vortex aeration device for wastewater treatment.

[0015] Figure 3 This is a diagram showing the disassembled structure of a vortex aeration device for wastewater treatment.

[0016] In the diagram: 1. Hollow base; 2. Partition mesh cover; 3. Direct current channel; 4. First air inlet pipe; 5. Jet pipe; 6. Second air inlet pipe; 7. Extension pipe; 8. T-connector; 9. Valve; 10. Hollowed-out bracket; 11. Impeller; 12. Fixed column; 13. Triangular cutting column; 14. Hollowed-out disc; 15. Connecting rod; 16. Upper cylinder; 17. Lower cylinder; 18. Outer expansion cover; 19. Bolt; 20. Connecting pipe. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-3 In this embodiment of the present invention, a cyclone aeration device for sewage treatment includes a hollow base 1. A mesh cover 2 is fixedly installed at the bottom of the hollow base 1. A direct current channel 3 is provided inside the hollow base 1. A first air inlet pipe 4 is fixedly connected to the side of the direct current channel 3. An air jet pipe 5 inserted downward into the mesh cover 2 is fixedly connected to the bottom surface of the direct current channel 3. Air holes are evenly opened on the air jet pipe 5. A second air inlet pipe 6 is fixedly connected to the top side wall of the air jet pipe 5. The second air inlet pipe 6 and the first air inlet pipe 4 are both fixedly connected through the hollow base 1 and are fixedly connected to an extension pipe 7. A three-way pipe 8 is fixedly connected to the top of the extension pipe 7. A connecting pipe 20 is fixedly connected to the third port of the three-way pipe 8. Valves 9 are fixedly installed at both ports where the three-way pipe 8 connects to the extension pipe 7. A hollow bracket 10 is fixedly connected to the top inner side of the hollow base 1. An impeller 11 is rotatably installed on the bottom surface of the hollow bracket 10.

[0019] Connecting pipe 20 connects to an external high-pressure air supply pipeline. High-pressure gas enters the first intake pipe 4 through extension pipe 7, and then sprays upward through direct current channel 3. The sprayed high-pressure gas drives impeller 11 to rotate, while continuously spraying upward. The resulting negative pressure draws in the sewage at the bottom. During the suction process, the wastewater is isolated by the screen cover 2 to prevent larger particles from being sucked in. After a period of time, the airflow direction is switched by opening and closing valve 9, allowing high-pressure air to enter the second intake pipe 6 through extension pipe 7, and finally spray out through the air holes on the jet pipe 5, thereby backwashing the screen cover 2 and preventing blockage.

[0020] A fixed column 12 is fixedly connected to the top surface of the impeller 11, and triangular cutting columns 13 are evenly fixedly installed on the outer side of the fixed column 12.

[0021] During the rotation of the impeller 11, the fixed column 12 drives the triangular cutting column 13 to move in a circular motion, cutting the rising air and sewage in the swirling flow, cutting the larger air bubbles, thereby increasing the uniformity of aeration.

[0022] A hollow disk 14 is fixedly connected to the outer side of the bottom end of the fixed column 12. The hollow disk 14 slides against the inner wall of the hollow base 1.

[0023] The hollowed-out disc 14 provides support for the rotation of the fixed column 12, thereby improving the stability of the rotation of the fixed column 12 and the impeller 11.

[0024] The extension tubes 7 are all fixed together by a connecting rod 15.

[0025] The two extension tubes 7 are fixed together by the connecting rod 15 to increase the structural strength.

[0026] The hollow base 1 includes an upper cylinder 16 and a lower cylinder 17.

[0027] The bottom end of the lower cylinder 17 is fixedly connected to an outer expansion cover 18. The outer expansion cover 18 increases the area of ​​the suction port. The upper cylinder 16 and the lower cylinder 17, as well as the outer expansion cover 18 and the mesh cover 2, are fixedly installed by bolts 19. The impeller 11 is located inside the upper cylinder 16, and the direct current channel 3 is located inside the lower cylinder 17.

[0028] The upper cylinder 16 and the lower cylinder 17 can be separated, and the outer expansion cover 18 and the partition cover 2 can be separated, so that the equipment can be disassembled into multiple parts, making it easier to expose the interior for cleaning and maintenance.

[0029] The working principle of this utility model is as follows: In use, the connecting pipe 20 is connected to an external high-pressure gas supply pipeline. After the high-pressure gas enters the three-way pipe 8, the airflow direction is controlled by opening and closing the valve 9 at the connection port between the three-way pipe 8 and the extension pipe 7. During normal aeration operation, the high-pressure gas enters the extension pipe 7 connected to the first air inlet pipe 4 through the opened valve 9. The two extension pipes 7 are fixed together by the connecting rod 15 to improve the overall structural strength. The high-pressure gas enters the direct current channel 3 inside the hollow base 1 through the first air inlet pipe 4 and is ejected upwards. The upward ejected high-pressure airflow drives the impeller 11, which is rotated on the bottom surface of the hollow bracket 10 on the inner side of the top of the hollow base 1, to rotate. At the same time, the continuously upward high-pressure airflow creates a negative pressure inside the equipment. The negative pressure draws the sewage from the bottom of the hollow base 1 into the equipment. During the sewage suction process... The impurity isolation is achieved by the mesh cover 2 fixedly installed at the bottom of the hollow base 1, which intercepts large-diameter solid impurities in the sewage and prevents impurities from entering the equipment and causing blockage of the flow channel and wear of the impeller 11. While the impeller 11 rotates, it drives the fixed column 12 fixedly connected to its top surface to make a circular motion. The triangular cutting column 13 uniformly fixedly installed on the outside of the fixed column 12 rotates synchronously with the fixed column 12, cutting the rising gas-liquid mixture, breaking large bubbles into small bubbles, improving the uniformity of aeration and the gas-liquid mass transfer efficiency. The hollow disk 14 fixedly connected to the bottom outside of the fixed column 12 slides against the inner wall of the hollow base 1, providing radial support for the rotation of the fixed column 12, which greatly improves the operational stability of the impeller 11 and the fixed column 12 during rotation. When the equipment has been running for a period of time, and there is a risk of blockage due to sludge and fibrous debris adhering to the mesh cover 2, the flow direction of high-pressure air is changed by switching the opening and closing states of the two valves 9 on the three-way pipe 8. This allows the high-pressure gas to enter the extension pipe 7 connected to the second air inlet pipe 6. The high-pressure gas then enters the jet pipe 5, which is fixedly connected to the bottom of the direct current channel 3 and inserted downwards into the mesh cover 2. The gas is then ejected outwards at high pressure through the air holes on the jet pipe 5, performing a reverse flushing of the mesh cover 2 to remove various debris adhering to it and prevent the mesh of the mesh cover 2 from becoming clogged. To ensure the continuous and stable suction and operation of the equipment, the hollow base 1 consists of an upper cylinder 16 and a lower cylinder 17. The impeller 11 is located inside the upper cylinder 16, and the direct current channel 3 is located inside the lower cylinder 17. The outer expansion cover 18, which is fixedly connected to the bottom of the lower cylinder 17, expands the flow area of ​​the sewage suction port and improves the sewage suction efficiency. The upper cylinder 16 and the lower cylinder 17, as well as the outer expansion cover 18 and the mesh cover 2, are all fixedly installed by bolts 19. The detachable assembly structure makes it easy to disassemble the equipment and fully expose the internal structure for cleaning and maintenance.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cyclone aeration device for wastewater treatment, comprising a hollow base (1), characterized in that: The hollow base (1) is fixedly mounted with a mesh cover (2) at the bottom. A direct current channel (3) is provided inside the hollow base (1). A first air inlet pipe (4) is fixedly connected to the side of the direct current channel (3). A jet pipe (5) inserted downward into the mesh cover (2) is fixedly connected to the bottom surface of the direct current channel (3). A second air inlet pipe (6) is fixedly connected to the top side wall of the jet pipe (5). The second air inlet pipe (6) and the first air inlet pipe (4) are both fixedly connected through the hollow base (1) and are fixedly connected with an extension pipe (7). A three-way pipe (8) is fixedly connected to the top of the extension pipe (7). A connecting pipe (20) is fixedly connected to the third port of the three-way pipe (8). Valves (9) are fixedly installed at both ports where the three-way pipe (8) and the extension pipe (7) are connected. A hollow bracket (10) is fixedly connected to the top inner side of the hollow base (1). An impeller (11) is rotatably installed on the bottom surface of the hollow bracket (10).

2. The cyclone aeration device for sewage treatment according to claim 1, characterized in that: The top surface of the impeller (11) is fixedly connected to a fixed column (12), and triangular cutting columns (13) are uniformly fixedly installed on the outer side of the fixed column (12).

3. The cyclone aeration device for sewage treatment according to claim 2, characterized in that: A hollow disk (14) is fixedly connected to the outer side of the bottom end of the fixed column (12), and the hollow disk (14) slides against the inner wall of the hollow base (1).

4. The cyclone aeration device for sewage treatment according to claim 1, characterized in that: The extension tubes (7) are fixed together by a connecting rod (15).

5. A cyclone aeration device for wastewater treatment according to claim 1, characterized in that: The hollow base (1) includes an upper cylinder (16) and a lower cylinder (17).

6. The cyclone aeration device for sewage treatment according to claim 5, characterized in that: The bottom end of the lower cylinder (17) is fixedly connected to an outer expansion cover (18). The upper cylinder (16) and the lower cylinder (17), as well as the outer expansion cover (18) and the mesh cover (2), are fixedly installed by bolts (19). The impeller (11) is located inside the upper cylinder (16), and the direct current channel (3) is located inside the lower cylinder (17).

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