Dissolved air tank with flow guide mechanism for dissolved air flotation machine

Abstract

The utility model relates to sewage treatment technical field discloses a kind of gas dissolving tank for dissolved air flotation machine with built-in flow guide mechanism, including tank body, the inner wall of tank body is fixedly connected with spiral flow guide ring, the front side of tank body is detachably connected with sealing assembly, the inside of tank body is fixedly connected with support ring, the bottom left side of support ring is fixedly connected with multiple abutting columns, the inside of support ring is fixedly connected with two support rods, the bottom of support rod is detachably connected with water distribution plate one, the left side of water distribution plate one is rotatably connected with water distribution plate two in contact with abutting column, the top of water distribution plate one is fixedly connected with two insert strips of support rod joint, the inside of water distribution plate two is slidably connected with clamping block.In the utility model, through the insert strip joint of water distribution plate one and support rod, water distribution plate two and tank body clamping block-slot cooperation, realize water distribution plate detachable design, prevent impurity residual block water distribution hole, destroy water distribution uniformity, ensure gas-liquid contact efficiency, improve dissolved air effect.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a dissolved air flotation tank with an internal flow guiding mechanism. Background Technology

[0002] Wastewater treatment technology is a system of technologies that remove pollutants (such as suspended solids, organic matter, and heavy metals) from wastewater through physical, chemical, and biological means, enabling the water quality to meet discharge standards or reuse requirements. Physical methods separate impurities through sedimentation and filtration, chemical methods remove pollutants through chemical reactions, and biological methods utilize microorganisms to degrade organic matter. It is widely used in the treatment of industrial wastewater and domestic sewage, and is a key technology for protecting water resources and preventing water pollution, providing support for ecological environment governance and water resource recycling.

[0003] Among the aforementioned wastewater treatment technologies, physical separation technology often relies on dissolved air flotation (DAF) machines to achieve efficient solid-liquid separation, and the dissolved air tank for the DAF machine is the core component of this equipment. Its main function is to allow air to fully contact and dissolve with wastewater under a certain pressure, forming high-concentration dissolved air water. By optimizing the internal structure (such as setting up a water distribution plate and packing layer), the dissolved air efficiency can be improved. Subsequently, the dissolved air water is depressurized by a release device to release microbubbles, which adsorb suspended particles in the wastewater and bring them to the water surface, ultimately completing the separation and contributing to the stable and efficient operation of the wastewater treatment process.

[0004] However, in existing technologies, some dissolved air tanks and water distribution plates are integrated or designed to be difficult to remove for cleaning. Because the water distribution plate cannot be removed, cleaning relies solely on reverse high-pressure water flow or chemical agents. Water flow struggles to penetrate hidden areas such as the inside of the water distribution holes and the gaps between the plate and the tank wall. Furthermore, the chemical agents are affected by concentration and structural obstruction, preventing them from fully contacting contaminated areas, leading to long-term residues. These residues clog the water distribution holes, disrupt water distribution uniformity, reduce gas-liquid contact efficiency, and significantly decrease the dissolved air effect.

[0005] Therefore, a dissolved air flotation tank with an internal flow guiding mechanism is proposed to address the above problems. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides a dissolved air flotation tank with an internal flow guiding mechanism. It aims to improve the problem that in some dissolved air tanks in the prior art, the water distribution plate cannot be removed, and the water distribution plate cannot be thoroughly cleaned by reverse high-pressure water flow or chemical agents alone. This results in long-term residue of impurities, which in turn clogs the water distribution holes, disrupts the uniformity of water distribution, reduces the gas-liquid contact efficiency, and significantly reduces the dissolved air effect.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A dissolved air flotation tank with an internal flow guiding mechanism includes a tank body. A spiral flow guiding ring is fixedly connected to the inner wall of the tank body. A sealing assembly is detachably connected to the front side of the tank body. A support ring is fixedly connected inside the tank body. Multiple abutments are fixedly connected to the bottom left side of the support ring. Two support rods are fixedly connected to the inner side of the support ring. A water distribution plate is detachably connected to the bottom of the support rods. A second water distribution plate is rotatably connected to the left side of the first water distribution plate, which contacts the abutments. Two inserts that engage with the support rods are fixedly connected to the top of the first water distribution plate. A locking block is slidably connected inside the second water distribution plate. A proximity assembly is provided on the right side of the locking block. A locking groove adapted to the locking block is opened on the inner wall of the tank body. As a further description of the above technical solution: The sealing assembly includes an outer plate, the inner side of which is detachably connected to the front side of the tank body by screws, and an inner plate adapted to the front opening of the tank body is fixedly connected to the rear side of the outer plate. As a further description of the above technical solution: A rubber ring is fixedly connected to the outside of the inner plate, and the outside of the rubber ring is snapped into the inner wall of the tank. A sealing ring that is in close contact with the front side of the tank is fixedly connected to the rear side of the outer plate. As a further description of the above technical solution: The approach component includes a limiting block fixed to the right side of the card block, and a spring is provided inside the second water distribution plate; As a further description of the above technical solution: One end of the spring is fixedly connected to one side of the inner wall of the water distribution plate II, and the other end of the spring is fixedly connected to one side of the limiting block. As a further description of the above technical solution: A water inlet pipe is provided on the outer right side of the tank body, and a water outlet pipe is provided on the outer left side of the tank body; As a further description of the above technical solution: Both the first water distribution plate and the second water distribution plate have cylindrical water distribution holes on their surfaces. As a further description of the above technical solution: A sealing ring is fixedly connected to the periphery of the limiting block, and the outer side of the sealing ring is slidably connected to the inner wall of the water distribution plate.

[0008] This utility model has the following beneficial effects: In this utility model, the water distribution plate is designed to be detachable by the insertion of the water distribution plate one with the support rod and the water distribution plate two with the locking block-slot of the tank. Combined with the overall disassembly structure of the sealing component, the staff can easily remove the water distribution plate from the tank, preventing impurities from clogging the water distribution holes and disrupting the uniformity of water distribution, ensuring the gas-liquid contact efficiency and improving the gas dissolution effect. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of a dissolved air flotation tank with an internal flow guiding mechanism proposed in this utility model. Figure 2 This is a schematic diagram of the outer plate of a dissolved air flotation tank with an internal flow guiding mechanism proposed in this utility model. Figure 3 This is a schematic diagram of the sealing ring of a dissolved air flotation machine with an internal flow guiding mechanism, as proposed in this utility model. Figure 4 This is a schematic diagram of the water distribution plate of a dissolved air flotation machine with an internal flow guiding mechanism proposed in this utility model. Figure 5 This is a schematic diagram of the cloth support rod of a dissolved air flotation machine with an internal flow guiding mechanism proposed in this utility model. Figure 6 for Figure 5 Enlarged view of point A in the image; Figure 7 for Figure 5 Enlarged view of point B in the image; Figure 8 This is a schematic diagram of the slot structure of a dissolved air flotation machine with an internal flow guiding mechanism proposed in this utility model.

[0010] Legend: 1. Tank body; 2. Spiral guide ring; 3. Outer plate; 4. Inner plate; 5. Rubber ring; 6. Sealing ring; 7. Support ring; 8. Support column; 9. Support rod; 10. Water distribution plate one; 11. Water distribution plate two; 12. Insert strip; 13. Locking block; 14. Limiting block; 15. Spring; 16. Locking groove. Detailed Implementation

[0011] 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.

[0012] Reference Figures 1 to 8This utility model provides an embodiment of a dissolved air flotation machine with an internal flow guiding mechanism, comprising a tank body 1, which is the main structure of the entire dissolved air flotation machine, providing installation support and dissolved air space for the internal components; an inlet pipe is provided on the right side of the tank body 1, which is used to introduce the wastewater to be treated into the tank body 1; an outlet pipe is provided on the left side of the tank body 1, which is used to discharge the dissolved air water that has completed dissolved air into the subsequent air flotation system; a spiral guide ring 2 is fixedly connected to the inner wall of the tank body 1, which guides the wastewater to flow stably along the tank wall through a spiral structure, prolonging the residence time of the wastewater in the tank, increasing the gas-liquid contact area, and laying the foundation for efficient dissolved air.

[0013] A sealing assembly is detachably connected to the front side of tank 1. This assembly seals the front opening of tank 1, ensuring a sealed environment inside and preventing pressure leakage and wastewater seepage. The sealing assembly includes an outer plate 3, which serves as the external support structure for easy disassembly and assembly. The inner side of the outer plate 3 is detachably connected to the front of tank 1 via screws, allowing for easy detachment and maintenance of tank 1 later. An inner plate 4, adapted to the front opening of tank 1, is fixedly connected to the rear side of the outer plate 3. The inner plate 4 is used for insertion... Inside the tank 1, the sealing assembly is enhanced to ensure a tight seal between itself and the tank 1. A rubber ring 5 is fixedly connected to the outside of the inner plate 4. The rubber ring 5 uses its elastic deformation to fill the gap between the inner plate 4 and the inner wall of the tank 1, forming a primary seal. The outside of the rubber ring 5 is snapped into the inner wall of the tank 1. The snap-fit ​​structure ensures that the rubber ring 5 is stably fixed and improves the sealing effect. A sealing ring 6 is fixedly connected to the rear side of the outer plate 3, which is in close contact with the front side of the tank 1. The sealing ring 6 fits against the front side of the tank 1, further blocking gaps and forming a secondary seal. The double seal ensures stable pressure inside the tank.

[0014] A support ring 7 is fixedly connected inside the tank body 1. The support ring 7 is used to fix the abutment column 8 and the support rod 9, providing installation support for the water distribution structure. Multiple abutment columns 8 are fixedly connected to the bottom left side of the support ring 7. The abutment columns 8 are used to hold the top of the water distribution plate 11 when it is working, preventing the water distribution plate 11 from rotating due to the upward impact of sewage, and ensuring the stability of the water distribution structure. Two support rods 9 are fixedly connected to the inner side of the support ring 7. The support rods 9 are used to support the water distribution plate 10, providing a fixed installation base for the water distribution plate 10. The bottom of the support rod 9 is detachably connected to the water distribution plate 10. The water distribution plate 10 and the water distribution plate 11 cooperate to achieve uniform dispersion of sewage. The left side of the water distribution plate 10 is rotatably connected to the water distribution plate 11, which contacts the abutment column 8. The water distribution plate 11 can rotate around the water distribution plate 10, making it easy to fold and take out from the opening of the tank body 1. At the same time, it works with the water distribution plate 10 to complete the water distribution.

[0015] Both the first water distribution plate 10 and the second water distribution plate 11 have cylindrical water distribution holes on their surfaces. These holes are used to evenly disperse wastewater into multiple fine streams, increasing the gas-liquid contact area and improving dissolved air efficiency. The top of the first water distribution plate 10 is fixedly connected to two inserts 12 that engage with the support rod 9. The engagement of the inserts 12 with the support rod 9 allows for a detachable connection between the first water distribution plate 10 and the support rod 9, facilitating the assembly and disassembly of the first water distribution plate 10. The second water distribution plate 11 has a slidingly connected locking block 13 inside. The locking block 13... The slot 16 is used to fix the water distribution plate 11 to the tank 1, preventing the water distribution plate 11 from rotating. A contact component is provided on the right side of the block 13. The contact component is used to provide a continuous clamping force to the block 13, ensuring that the block 13 is stably engaged in the slot 16. The contact component includes a limiting block 14 fixed to the right side of the block 13. The limiting block 14 is used to limit the sliding range of the block 13, preventing the block 13 from coming out of the water distribution plate 11. At the same time, it drives the block 13 to compress or release the spring 15.

[0016] A sealing ring is fixedly connected to the periphery of the limiting block 14. The sealing ring is used to seal the gap between the limiting block 14 and the inner wall of the second water distribution plate 11, preventing sewage from seeping into the second water distribution plate 11 and corroding the spring 15. The outer side of the sealing ring is slidably connected to the inner wall of the second water distribution plate 11. The slidable connection ensures that the limiting block 14 can move smoothly. A spring 15 is provided inside the second water distribution plate 11. The spring 15 provides elastic driving force for the locking block 13, pushing the locking block 13 into the locking groove 16 or being compressed during disassembly. One end of the spring 15 is fixedly connected to one side of the inner wall of the second water distribution plate 11, and the other end of the spring 15 is fixedly connected to one side of the limiting block 14. The fixed ends ensure that the spring 15 works stably and transmits force through its own elastic deformation. A locking groove 16 adapted to the locking block 13 is opened on the inner wall of the tank body 1. The locking groove 16 provides a locking position for the locking block 13 and cooperates with the locking block 13 to fix the second water distribution plate 11, ensuring the structural stability of the water distribution structure during operation.

[0017] Working principle: After the dissolved gas tank has been used for a period of time, impurities tend to accumulate in the water distribution holes of water distribution plate 10 and water distribution plate 21. At this time, first use a screwdriver to unscrew the screws connecting the outer plate 3 to the tank body 1, and remove the outer plate 3, the inner plate 4 on its rear side, the rubber ring 5, and the sealing ring 6 as a whole from the front opening of the tank body 1, exposing water distribution plate 10 and water distribution plate 21. Then, the worker reaches under water distribution plate 21 inside the tank and pulls it down, so that the internal locking block 13 of water distribution plate 21 overcomes the elastic force of the spring 15 and disengages from the locking groove 16 on the inner wall of the tank body 1, thus releasing the fixation of water distribution plate 211. Water distribution plate 211 can rotate around the connecting shaft with water distribution plate 10 until the two fit together to form a semi-circular structure. The worker pulls the water distribution structure outward to pull out the insert 12 of water distribution plate 10 from the support rod 9, and then the water distribution plate can be removed from the front opening of the tank body 1 for thorough cleaning to remove impurities from dead corners.

[0018] After cleaning, insert the water distribution plate into the tank while maintaining a semi-circular shape. Align the support rod 9 with the insert strip 12 and push the water distribution plate 10 to the innermost side. Rotate the water distribution plate 2 11 in the opposite direction to reassemble it into a circle with the water distribution plate 10. During this process, the internal locking block 13 of the water distribution plate 2 11 is squeezed by the inner wall of the tank body 1, which drives the limiting block 14 to compress the spring 15. When the water distribution plate 2 11 rotates to contact the abutment 8, the locking block 13 aligns with the locking groove 16. The spring 15 releases its elastic force to push the locking block 13 into the locking groove 16 to complete the fixation. Finally, realign the sealing assembly with the front opening of the tank body 1, so that the inner plate 4 is inserted into the tank, the rubber ring 5 is engaged with the tank wall, and the sealing ring 6 is attached to the front of the tank body 1. Tighten the four corner screws of the outer plate 3 with a screwdriver to restore the seal, and the dissolved gas tank can be put back into operation.

[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A dissolved air flotation tank with an internal flow guiding mechanism, comprising a tank body (1), characterized in that: The inner wall of the tank (1) is fixedly connected with a spiral guide ring (2). The front side of the tank (1) is detachably connected with a sealing assembly. The inside of the tank (1) is fixedly connected with a support ring (7). The bottom left side of the support ring (7) is fixedly connected with multiple abutments (8). The inside of the support ring (7) is fixedly connected with two support rods (9). The bottom of the support rods (9) is detachably connected with a water distribution plate one (10). The left side of the water distribution plate one (10) is rotatably connected with a water distribution plate two (11) that contacts the abutments (8). The top of the water distribution plate one (10) is fixedly connected with two inserts (12) that engage with the support rods (9). The inside of the water distribution plate two (11) is slidably connected with a locking block (13). The right side of the locking block (13) is provided with a proximity assembly. The inner wall of the tank (1) is provided with a slot (16) that matches the locking block (13).

2. The dissolved air flotation tank with an internal flow guiding mechanism according to claim 1, characterized in that: The sealing assembly includes an outer plate (3), the inner side of which is detachably connected to the front side of the tank body (1) by screws, and the rear side of the outer plate (3) is fixedly connected to an inner plate (4) that is adapted to the front opening of the tank body (1).

3. A dissolved air flotation tank with an internal flow guiding mechanism according to claim 2, characterized in that: The outer side of the inner plate (4) is fixedly connected with a rubber ring (5), and the outer side of the rubber ring (5) is in a snap-fit ​​relationship with the inner wall of the tank (1). The rear side of the outer plate (3) is fixedly connected with a sealing ring (6) that is in close contact with the front side of the tank (1).

4. A dissolved air flotation tank with an internal flow guiding mechanism according to claim 1, characterized in that: The approach component includes a limiting block (14) fixed to the right side of the card block (13), and a spring (15) is provided inside the second water distribution plate (11).

5. A dissolved air flotation tank with an internal flow guiding mechanism according to claim 4, characterized in that: One end of the spring (15) is fixedly connected to one side of the inner wall of the water distribution plate (11), and the other end of the spring (15) is fixedly connected to one side of the limiting block (14).

6. A dissolved air flotation tank with an internal flow guiding mechanism according to claim 1, characterized in that: A water inlet pipe is provided on the right side of the tank (1), and a water outlet pipe is provided on the left side of the tank (1).

7. A dissolved air flotation tank with an internal flow guiding mechanism according to claim 1, characterized in that: Both the first water distribution plate (10) and the second water distribution plate (11) have columnar water distribution holes on their surfaces.

8. A dissolved air flotation tank with an internal flow guiding mechanism according to claim 4, characterized in that: A sealing ring is fixedly connected to the periphery of the limiting block (14), and the outer side of the sealing ring is slidably connected to the inner wall of the water distribution plate (11).

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