Combined biochemical pool foam removing device
By using a combined biological treatment tank foam removal device, which utilizes mechanical defoaming, spraying, and ultrasonic waves to destroy foam, the problem of incomplete foam removal in traditional methods is solved, achieving efficient and low-cost wastewater treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG HUZHOU XINAN WATER CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-05-15
AI Technical Summary
In the wastewater treatment process, traditional defoaming methods cannot effectively and quickly eliminate foam, and they also have problems such as high cost, potential dilution of sludge concentration, and impact on treatment efficiency and effluent quality.
A combined biological tank foam removal device is adopted, which combines a mechanical defoaming mechanism, a spraying mechanism, and an ultrasonic vibration plate. The device uses an impeller to cut and a defoaming rod to puncture the foam, combined with water flushing and ultrasonic waves to destroy the foam structure. The device is equipped with a lifting mechanism to adapt to different foam layer thicknesses and achieves intelligent control through a foam level sensor.
It achieves efficient and low-cost foam removal, quickly eliminates foam, reduces operating costs, improves wastewater treatment efficiency and effluent quality, and avoids secondary pollution.
Smart Images
Figure CN224242849U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a foam removal device, and more particularly to a combined biochemical pool foam removal device. Background Technology
[0002] In wastewater treatment, biological treatment tanks often generate large amounts of foam due to microbial activity and the presence of surfactants. This foam not only affects treatment efficiency but can also lead to wastewater overflow, impacting the environment and operations. Traditional defoaming methods generally employ physicochemical and biological approaches to control foam. Physicochemical methods include spraying water and adding chemical agents. Spraying water is simple to operate, requires no chemical agents, and can disrupt the surface tension of foam, thereby breaking up air bubbles floating on the water surface to reduce foam and alleviate emergency overflow problems. However, spraying alone only temporarily suppresses foam and cannot fundamentally eliminate it. Defoaming is slow, and frequent spraying may dilute the sludge concentration in the tank, affecting treatment efficiency. While using chemical agents is fast-acting and applicable to various foam types, long-term use is costly, and residual chemicals may affect effluent quality, causing secondary pollution and hindering the growth of activated sludge microorganisms, reducing biological efficiency. Utility Model Content
[0003] The purpose of this invention is to provide a combined biological tank foam removal device. This invention features reduced costs and high-efficiency foam removal.
[0004] The technical solution of this utility model is as follows: A combined biochemical tank foam removal device includes a mounting plate, fixed frames on both sides of the mounting plate, a mechanical defoaming mechanism and a spraying mechanism located around the mechanical defoaming mechanism on the mounting plate. The mechanical defoaming mechanism includes a waterproof motor mounted on the mounting plate, a defoaming box below the mounting plate, a rotating shaft on the output shaft of the waterproof motor that passes through the mounting plate and extends into the defoaming box, at least two sets of impellers (upper and lower) and several defoaming rods located between adjacent impellers on the rotating shaft, multiple defoaming needles on the surface of the defoaming rods, a defoaming groove at the bottom of the defoaming box, and a liquid outlet on the side of the defoaming box; a lifting mechanism for driving the defoaming box to move up and down is also provided between the mounting plate and the defoaming box.
[0005] In the aforementioned combined biochemical pool foam removal device, the bottom of the mounting plate is provided with a rotating platform fixedly connected to the rotating shaft. The lifting mechanism includes a lifting drive installed on the rotating platform and connected to the defoaming box. The defoaming box is provided with a movable sleeve. The rotating shaft passes through the movable sleeve and extends into the defoaming box. The rotating shaft and the movable sleeve are connected by a spline.
[0006] In the aforementioned combined biochemical pool foam removal device, the spraying mechanism includes multiple spray pipes circumferentially distributed on the mounting plate, and the spray pipes are equipped with high-pressure nozzles and liquid inlet pipes.
[0007] The aforementioned combined biochemical tank foam removal device also includes a controller and a foam level sensor. The foam level sensor is installed on the defoaming tank, and the controller is electrically connected to the foam level sensor, the mechanical defoaming mechanism, and the spraying mechanism.
[0008] In the aforementioned combined biochemical pool foam removal device, the fixing frame includes a horizontal plate and a vertical plate. The horizontal plate has an elongated hole, and a fixing bolt for connecting to the mounting plate is provided in the elongated hole. Several fixing suction cups are provided on the opposite side of the two vertical plates.
[0009] In the aforementioned combined biochemical pool foam removal device, the outer periphery of the defoaming box is provided with several ultrasonic vibration plates, and the interior of the defoaming box is provided with an ultrasonic generator and an ultrasonic transducer for controlling the ultrasonic vibration plates. Each ultrasonic vibration plate is provided with several vibration points.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0011] This invention uses an impeller and defoaming rod in a mechanical defoaming mechanism to effectively cut and destroy foam, thereby accelerating the elimination of bubbles. The lifting mechanism can move the defoaming box up and down, thereby adjusting the distance between the defoaming box and the foam, as well as the defoaming height, to adapt to different foam layer thicknesses in the biochemical tank.
[0012] This invention uses a spray mechanism located around the mechanical defoaming mechanism to spray high-speed water flow or droplets onto the foam for hydraulic flushing, breaking up the foam around the mechanical defoaming mechanism, reducing the amount of foam, and working in conjunction with the mechanical defoaming mechanism to accelerate the breaking of foam in the biological tank.
[0013] This invention utilizes a fixed frame structure, allowing the entire device to be moved and adjusted, making it convenient to use and reducing costs.
[0014] Therefore, this utility model has the characteristics of reducing costs and efficiently defoaming. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model.
[0016] Figure 2 This is a structural diagram of a vertical plate.
[0017] The markings in the attached diagram are as follows: 1. Mounting plate; 2. Fixing frame; 21. Horizontal plate; 22. Vertical plate; 23. Elongated hole; 24. Fixing bolt; 25. Fixing suction cup; 31. Waterproof motor; 32. Defoaming box; 33. Rotating shaft; 34. Impeller; 35. Defoaming rod; 36. Defoaming needle; 37. Defoaming tank; 38. Liquid outlet; 41. Spray pipe; 42. High-pressure nozzle; 43. Liquid inlet pipe; 51. Rotary table; 52. Lifting driver; 53. Movable sleeve; 6. Foam level sensor; 71. Ultrasonic vibrating plate; 72. Ultrasonic generator; 73. Ultrasonic transducer; 8. Biochemical tank. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.
[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, a hinged connection, a rotating connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0020] Example:
[0021] like Figures 1-2 As shown, a combined biochemical tank foam removal device includes a mounting plate 1, with fixing frames 2 on both sides of the mounting plate 1. The mounting plate 1 is equipped with a mechanical defoaming mechanism and a spraying mechanism located around the mechanical defoaming mechanism. The mechanical defoaming mechanism includes a waterproof motor 31 mounted on the mounting plate 1. A defoaming box 32 is located below the mounting plate 1. A rotating shaft 33 is mounted on the output shaft of the waterproof motor 31, passing through the mounting plate 1 and extending into the defoaming box 32. The rotating shaft 33 is equipped with at least two sets of impellers 34, one above the other, and several defoaming rods 35 located between adjacent impellers 34. The surface of the defoaming rods 35 is equipped with multiple defoaming needles 36. The bottom of the defoaming box 32 is equipped with a defoaming groove 37, and the side of the defoaming box 32 is equipped with a liquid outlet 38. A lifting mechanism for driving the defoaming box 32 to move up and down is also provided between the mounting plate 1 and the defoaming box 32.
[0022] When the mechanical defoaming mechanism of this utility model is working, the waterproof motor 31 starts and drives multiple sets of impellers 34 to rotate, creating a negative pressure in the defoaming box 32. The foam in the biological tank 8 enters the defoaming box 32 from the defoaming tank 37 and comes into contact with the rotating impellers 34 and defoaming rods 35. The impellers 34 cut and break the large bubbles, and the defoaming needles 36 puncture the cut and broken foam fragments, thereby destroying the overall structure of the foam and making it easier for the foam to form a gas-liquid separation state. The generated liquid is discharged through the liquid outlet 38, accelerating the bubble elimination speed. The lifting mechanism can drive the defoaming box 32 to move up and down, thereby adjusting the distance between the defoaming box 32 and the foam and the defoaming height, which can adapt to different foam layer thicknesses in the biological tank 8.
[0023] This invention also uses a spray mechanism located around the mechanical defoaming mechanism to spray high-speed water flow or droplets onto the foam, breaking up the foam around the mechanical defoaming mechanism, causing the liquid film to thin and break, thereby reducing the amount of foam. In conjunction with the mechanical defoaming mechanism, it accelerates the breaking of foam in the biological tank 8.
[0024] The fixed frame structure allows the entire device to be moved and adjusted, making it convenient to use.
[0025] The bottom of the mounting plate 1 is provided with a rotating platform 51 fixedly connected to the rotating shaft 33. The lifting mechanism includes a lifting driver 52 mounted on the rotating platform 51 and connected to the defoaming box 32. A movable sleeve 53 is fixedly connected to the defoaming box 32. The rotating shaft 33 passes through the movable sleeve 53 and extends into the defoaming box 32. The rotating shaft 33 and the movable sleeve 53 are connected by a spline. The rotating platform 51 rotates under the drive of the rotating shaft 33. The lifting driver 52 can be a cylinder, electric cylinder, hydraulic cylinder, etc. Since the rotating shaft 33 and the movable sleeve 53 are connected by a spline, the lifting driver 52 mounted on the rotating platform 51 rotates synchronously with the defoaming box 32. The defoaming box 32 can move up and down under the drive of the lifting driver 52, thereby adjusting the distance between the defoaming box 32 and the foam layer.
[0026] The spraying mechanism includes multiple spray pipes 41 circumferentially distributed on the mounting plate 1. Adjacent spray pipes 41 are interconnected, and each spray pipe 41 is equipped with a high-pressure nozzle 42 and a liquid inlet pipe 43. The liquid inlet pipe 43 can be connected to water in the biological treatment tank 8. Liquid in the biological treatment tank is drawn by a water pump to spray the foam layer, eliminate foam, and save water resources.
[0027] The device also includes a controller and a foam level sensor 6. The foam level sensor 6 is installed on the defoaming tank 32 and is used to detect the foam height in the biochemical tank 8. The controller is electrically connected to the foam level sensor 6, the mechanical defoaming mechanism and the water pump of the spraying mechanism.
[0028] The foam level sensor 6 monitors the foam height in the biological tank 8. When the foam height reaches the preset value, a signal is sent to the controller. The controller then controls the mechanical defoaming mechanism and the spraying mechanism to work together to quickly eliminate foam and achieve intelligent operation.
[0029] The mounting bracket 2 includes a horizontal plate 21 and a vertical plate 22. The horizontal plate 21 has an elongated hole 23, and a fixing bolt 24 for connecting to the mounting plate 1 is installed in the elongated hole 23. Several fixing suction cups 25 are provided on the opposite side of the two vertical plates 22. The mounting bracket 2 is used to install the mechanical defoaming mechanism and the spraying mechanism. The horizontal plate 21 is installed on the top of the biological tank 8, and the vertical plates 22 are installed on the outer wall of the biological tank 8 to fix the mechanical defoaming mechanism and the spraying mechanism. The position of the vertical plates 22 can be adjusted by adjusting the position of the vertical plates 22 through the elongated hole 23 on the horizontal plate 21, thereby adjusting the distance between the two vertical plates 22. This can adapt to the installation of biological tanks 8 of different sizes and has a wide range of applications. In addition, the vertical plates 22 are provided with fixing suction cups 25. When the mounting bracket 2 is installed, the vertical plates 22 are firmly attached to the outer wall of the biological tank 8 by fixing suction cups 25, ensuring the stability of the foam removal device during installation and operation, and avoiding shaking or displacement of the mechanical defoaming mechanism during rotation, which would affect the defoaming effect.
[0030] The defoaming chamber 32 is provided with several ultrasonic vibration plates 71 around its outer perimeter. Inside the defoaming chamber 32, there is an ultrasonic generator 72 and an ultrasonic transducer 73 for controlling the ultrasonic vibration plates 71. Each ultrasonic vibration plate 71 has several vibration points. When multiple ultrasonic vibration plates 71 are inserted into the liquid, they generate high-frequency vibrations, which disrupt the stability of the foam through cavitation and cause the bubbles to burst.
[0031] Therefore, this utility model uses the defoaming box 32, the spraying mechanism and the ultrasonic vibration plate 71 to work together to defoam, which has a wide defoaming range and high efficiency; the mounting frame can stably fix the foam removal device and improve the stability of the defoaming work; the lifting mechanism can adjust the distance between the defoaming box 32 and the foam layer to adapt to foam of different thicknesses; the foam liquid level sensor 6 can monitor the height of the foam layer in real time, thereby realizing the automatic control of the foam removal device.
[0032] The parts of this utility model not described in detail are existing technologies and therefore will not be specifically described here.
Claims
1. A combined biological tank foam removal device, characterized in that: The system includes a mounting plate (1), with fixed brackets (2) on both sides of the mounting plate (1). The mounting plate (1) is equipped with a mechanical defoaming mechanism and a spraying mechanism located around the mechanical defoaming mechanism. The mechanical defoaming mechanism includes a waterproof motor (31) mounted on the mounting plate (1). A defoaming box (32) is located below the mounting plate (1). A rotating shaft (33) is provided on the output shaft of the waterproof motor (31) that passes through the mounting plate (1) and extends into the defoaming box (32). At least two sets of impellers (34) are provided on the rotating shaft (33), and several defoaming rods (35) are located between adjacent impellers (34). Multiple defoaming needles (36) are provided on the surface of the defoaming rods (35). A defoaming groove (37) is provided at the bottom of the defoaming box (32). An outlet hole (38) is provided on the side of the defoaming box (32). A lifting mechanism for driving the defoaming box (32) to move up and down is also provided between the mounting plate (1) and the defoaming box (32).
2. The combined biological tank foam removal device according to claim 1, characterized in that: The bottom of the mounting plate (1) is provided with a rotating platform (51) fixedly connected to the rotating shaft (33). The lifting mechanism includes a lifting driver (52) installed on the rotating platform (51) and connected to the defoaming box (32). The defoaming box (32) is provided with a movable sleeve (53). The rotating shaft (33) passes through the movable sleeve (53) and extends into the defoaming box (32). The rotating shaft (33) and the movable sleeve (53) are connected by a spline.
3. The combined biological tank foam removal device according to claim 1, characterized in that: The spraying mechanism includes multiple spray pipes (41) circumferentially distributed on the mounting plate (1), and the spray pipes (41) are provided with high-pressure nozzles (42) and liquid inlet pipes (43).
4. The combined biological tank foam removal device according to claim 1, characterized in that: It also includes a controller and a foam level sensor (6), the foam level sensor (6) is installed on the defoaming box (32), and the controller is electrically connected to the foam level sensor (6), the mechanical defoaming mechanism and the spraying mechanism respectively.
5. The combined biological tank foam removal device according to claim 1, characterized in that: The fixing frame (2) includes a horizontal plate (21) and a vertical plate (22). The horizontal plate (21) is provided with an elongated hole (23), and a fixing bolt (24) connected to the mounting plate (1) is provided in the elongated hole (23). Several fixing suction cups (25) are provided on the opposite side of the two vertical plates (22).
6. The combined biological tank foam removal device according to claim 1, characterized in that: The defoaming box (32) has several ultrasonic vibration plates (71) around its outer perimeter. Inside the defoaming box (32) are ultrasonic generators (72) and ultrasonic transducers (73) for controlling the ultrasonic vibration plates (71). Each ultrasonic vibration plate (71) has several vibration points.