Sewage air flotation device

Abstract

The utility model discloses a sewage air floatation device, which relates to the technical field of sewage treatment and comprises an air floatation machine, a water inlet chamber, a mixing chamber and a separation chamber are sequentially arranged in the air floatation machine from front to back, all the chambers are sequentially communicated, a clear water chamber and a slag discharge chamber which are communicated with the separation chamber are arranged on the rear side of the separation chamber, and the water inlet chamber and the slag discharge chamber are communicated with the separation chamber. The device further comprises a driving assembly, and the driving assembly is arranged in the separation chamber. In the process that the slag scraping plate continuously gets close to the shovel plate, the guide wheels located on the two sides of the slag scraping plate firstly enter the pulley grooves, then the front surface of the slag scraping plate makes contact with the shovel plate, and therefore sludge on the front surface of the slag scraping plate is scraped into the slag discharging cavity, cleaning of the surface of the slag scraping plate is achieved, and the service life of the slag scraping plate is prolonged. And the slag scraping plate positioned in the water body can play a role in stirring the water body, so that the contact opportunities of bubbles, pollution particles, oil stains and floc are increased, and the adhesiveness of the bubbles to the floc and the cleaning effect of the bubbles to the water body are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sewage flotation device. Background Art

[0002] Wastewater treatment refers to the process of treating wastewater generated by domestic, industrial and other sources through a series of physical, chemical and biological treatment methods to meet certain water quality standards, reduce the impact on the environment, protect water resources and recover useful substances.

[0003] The sewage flotation device is a solid-liquid separation equipment widely used in the field of sewage treatment. It uses tiny bubbles to carry suspended matter, grease, emulsions and other pollutants in sewage to the water surface to achieve a physical treatment method of solid-liquid separation. The working principle of the sewage flotation device is to dissolve air in the sewage and then release tiny bubbles. These tiny bubbles will adhere to suspended matter, grease and other pollutants in the sewage during the rising process. Due to the buoyancy of the bubbles, these pollutants adhered by the bubbles will float to the water surface together. Finally, the scum floating to the water surface is removed by the scraping system, thereby achieving solid-liquid separation and purifying the sewage. This method mainly utilizes the buoyancy of bubbles and the adhesion between bubbles and pollutants.

[0004] The shortcomings of the above-mentioned existing technical solutions are: since the scraper plate is responsible for scraping off the scum on the surface of the sewage, the scraper plate needs to circulate into the sewage surface to scrape off the scum on the sewage surface. Some scum will adhere to the surface of the scraper plate and be fixed on the scraper plate body after long-term accumulation, so that a certain volume of sludge blocks will be formed at the contact position between the scraper plate and the sewage liquid surface. The sludge blocks need to be cleaned regularly by maintenance personnel. If they are not cleaned for a long time, the scraper plate will always carry sludge blocks, which will affect the operation effect of the scraper plate, increase wear between components, and continuously pollute the water quality. Utility Model Content

[0005] The utility model aims to provide a sewage flotation device to solve the technical problem in the prior art that scum is easily accumulated on the scraper plate, thereby increasing maintenance costs and reducing the decontamination effect.

[0006] The technical problem to be solved by the present invention can be achieved through the following technical solutions:

[0007] A sewage flotation device includes an air flotation machine, wherein a water inlet chamber, a mixing chamber and a separation chamber are sequentially arranged inside the air flotation machine, and all the chambers are connected in sequence. A clean water chamber and a slag discharge chamber connected to the separation chamber are arranged on the rear side of the separation chamber. The device also includes a drive assembly, which is arranged inside the separation chamber. The drive assembly is equipped with multiple groups of parallel scraping plates, and a shovel plate that cooperates with the scraping plates is fixedly connected to one side of the slag discharge chamber.

[0008] As a further solution of the present invention: the drive assembly includes multiple groups of drive wheels rotatably connected to the separation chamber, a motor matched with the drive wheels is fixedly provided on one side of the separation chamber, multiple groups of drive wheels are symmetrically arranged on both sides of the separation chamber, and a transmission belt is matched and connected between the two groups of drive wheels in pairs on the same side, and the scraper plate is matched and arranged between the two groups of transmission belts.

[0009] As a further solution of the present invention: each group of the transmission belts is fixedly connected to multiple groups of connecting blocks that cooperate with each other, a rotating plate is rotatably connected between the corresponding two groups of connecting blocks, a disc spring is provided between the rotating end of the rotating plate and the connecting block, and the scraper plate is fixedly connected to the rotating plate.

[0010] As a further solution of the present invention: the slag discharge chamber is fixedly connected to the side of the scraper plate close to the scraper plate with an arc-shaped guide plate that cooperates with the scraper plate, and the scraper plate is rotatably connected to both sides with guide wheels that cooperate with the arc-shaped guide plate, and the plate surface of the arc-shaped guide plate close to the transmission belt side is evenly arranged with protrusion plates that cooperate with the guide wheels.

[0011] As a further solution of the present invention: the shovel plate is fixedly connected to the arc-shaped guide plate, and pulley grooves matching with the guide wheels are provided on both sides of the arc-shaped guide plate.

[0012] As a further solution of the present invention: the width of the slag discharge chamber is the same as the width of the scraper.

[0013] Beneficial effects of the utility model:

[0014] 1. In the process of the scraper plate continuously approaching the shovel plate, the guide wheels located on both sides of the scraper plate will first enter the pulley groove, and then the front surface of the scraper plate will contact the shovel plate again, thereby scraping the sludge on the front surface of the scraper plate into the inside of the slag discharge chamber, realizing the cleaning of the scraper plate surface. When the scraper plate is brought to one side of the curved guide plate, the scraper plate will be displaced along the inner curved plate surface of the curved guide plate under the action of the transmission belt, and the disc spring will continuously drive the scraper plate close to the plate surface of the curved guide plate, and a protruding plate body is provided on the inner curved plate surface of the curved guide plate. The guide wheel will continuously hit the protruding plate body under the action of the disc spring, so that the scraper plate will continuously approach and rebound inside the water body, thereby shaking off the sewage particles attached to the scraper plate, reducing the cost of manual maintenance.

[0015] 2. In the process of scraping scum by the scraper of the utility model, the scraper located inside the water body can stir the water body, increase the chances of air bubbles, pollution particles, oil stains and flocs coming into contact, thereby improving the adhesion of air bubbles to flocs and the cleaning effect on the water body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the matching structure of the driving wheel and the transmission belt of the utility model;

[0019] Figure 3 This is a schematic diagram of the overall side sectional structure of the utility model;

[0020] Figure 4 yes Figure 2 Schematic diagram of the locally enlarged structure at point A in the middle.

[0021] In the figure: 1. flotation machine; 2. water inlet chamber; 3. mixing chamber; 4. separation chamber; 5. clean water chamber; 6. slag discharge chamber; 7. drive wheel; 8. transmission belt; 9. connecting block; 10. rotating plate; 11. scraper plate; 12. guide wheel; 13. arc guide plate; 14. pulley groove; 15. shovel plate. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figures 1-4As shown, a sewage flotation device includes an air flotation machine 1. The air flotation machine 1 is provided with a water inlet chamber 2, a mixing chamber 3 and a separation chamber 4 in sequence, and all the chambers are connected in sequence. A clean water chamber 5 and a slag discharge chamber 6 connected to the separation chamber 4 are provided on the rear side of the separation chamber 4. The sewage is mixed with a coagulant and a flocculant in the water inlet chamber 2 to form flocs together with suspended matter, grease and other pollutants in the sewage. The sewage then enters the mixing chamber 3. Multiple groups of aeration devices are distributed in the mixing chamber 3. The aeration devices release tiny bubbles. These tiny bubbles will adhere to the flocs in the sewage during the rising process. Due to the buoyancy of the bubbles, the flocs are lifted up. These flocs adhered by the bubbles will float to the water surface to form scum. The device also includes a driving component, which is arranged inside the separation chamber 4. The driving component is equipped with multiple groups of parallel scraping plates 11, and a shovel plate 15 that cooperates with the scraping plate 11 is fixedly connected to one side of the slag discharge chamber 6; the driving component drives the multiple groups of scraping plates 11 to scrape the scum suspended on the surface of the water body, so as to discharge the scum into the inside of the slag discharge chamber 6, thereby realizing the separation of the scum from the water body. After the scraping operation of the scraping plate 11 is completed, the shovel plate 15 will clean the surface of the scraping plate 11, thereby reducing maintenance costs.

[0024] In some specific embodiments, in order to achieve the effect of the scraper 11 cyclically scraping the surface of the water body, the driving assembly includes multiple groups of driving wheels 7 rotatably connected to the separation chamber 4, and a motor matched with the driving wheel 7 is fixedly provided on one side of the separation chamber 4, and the motor can drive the driving wheel 7 to rotate. The multiple groups of driving wheels 7 are symmetrically arranged on both sides of the separation chamber 4, and a transmission belt 8 is matched and connected between the two groups of driving wheels 7 on the same side. The driving wheel 7 can drive the transmission belt 8 to move, and the scraper 11 is matched and arranged between the two groups of transmission belts 8; the scraper 11 is driven by the driving wheel 7 and the transmission belt 8, so that the scraper 11 can cyclically scrape off the scum on the surface of the water body, thereby improving the implementation effect. In the process of the scraper 11 scraping the scum, the scraper 11 located inside the water body can play a role in stirring the water body, increasing the chances of bubbles, pollution particles, and oil stains contacting with flocs, thereby improving the adhesion of bubbles to flocs and the cleaning effect on the water body.

[0025] In some specific implementation schemes, in order to achieve the scraping effect of the scraper plate 11 on the scum, each set of transmission belts 8 is fixedly connected to multiple sets of mutually cooperating connecting blocks 9, and a rotating plate 10 is rotatably connected between the corresponding two sets of connecting blocks 9. A disc spring is provided between the rotating end of the rotating plate 10 and the connecting block 9. The disc spring is responsible for maintaining the state of the rotating plate 10, and the scraper plate 11 is fixedly connected to the rotating plate 10; the running transmission belt 8 will drive the connecting block 9 to displace, so that the connecting block 9 drives the rotating plate 10 to displace, and the rotating plate 10 drives the scraper plate 11 to displace, and the scraper plate 11 drives the scum on the surface of the water body to move, and the scum has a reaction force on the scraper plate 11, and the disc spring is responsible for maintaining the vertical angle of the scraper plate 11 to prevent the scraper plate 11 from being overturned by a large amount of scum, thereby achieving the scraping effect of the scraper plate 11 on the scraper plate 11.

[0026] The guide wheel 12 is arranged on the plate surface of the curved guide plate 13 close to the transmission belt 8, and the protruding plate body 12 is evenly arranged on the plate surface of the curved guide plate 13 close to the transmission belt 8. When the scraper 11 is brought to the side of the curved guide plate 13, the scraper 11 will be displaced along the inner curved plate surface of the curved guide plate 13 under the action of the transmission belt 8. The coil spring will continuously drive the scraper 11 close to the plate surface of the curved guide plate 13, and the protruding plate body is provided on the inner curved plate surface of the curved guide plate 13. The guide wheel 12 will continuously hit the protruding plate body under the action of the coil spring, so that the scraper 11 will continuously perform a near-rebound operation inside the water body, thereby shaking off the sewage particles attached to the scraper 11, reducing the cost of manual maintenance.

[0027] In some specific embodiments, in order to improve the cleaning effect of the scraper plate 11 surface, the shovel plate 15 is fixedly connected to the arc-shaped guide plate 13, and pulley grooves 14 cooperating with the guide wheels 12 are opened on both sides of the arc-shaped guide plate 13; in the process of the scraper plate 11 continuously approaching the shovel plate 15, the guide wheels 12 located on both sides of the scraper plate 11 will first enter the pulley groove 14, and then the front surface of the scraper plate 11 will contact the shovel plate 15 again, thereby scraping the sludge on the front surface of the scraper plate 11 into the slag discharge chamber 6, thereby achieving the cleaning of the scraper plate 11 surface. The setting of the pulley groove 14 can prevent the guide wheel 12 from contacting the shovel plate 15 or the arc-shaped guide plate 13 first, resulting in the shovel plate 15 being unable to contact the surface of the scraper plate 11, making the cleaning level not thorough enough.

[0028] In some specific embodiments, in order to ensure that the scum located at all positions on the water surface can be scraped off by the scraper 11, the width of the scum discharge chamber 6 is the same as the width of the scraper 11; when the scraper 11 is displaced under the action of the transmission belt 8, it will drive all the scum located on the water surface within the implementation range of the transmission belt 8, including the scum attached to the side wall of the separation chamber 4, thereby ensuring the sewage cleaning effect.

[0029] To facilitate understanding of the embodiments of this solution by those skilled in the art, the working principle of the embodiments of this solution will now be described in conjunction with specific application scenarios:

[0030] During use, the driving wheel 7 and the transmission belt 8 drive the connecting block 9 to move, so that the connecting block 9 drives the rotating plate 10 to move, the rotating plate 10 drives the scraping plate 11 to move, and the scraping plate 11 drives the scum on the surface of the water body to move. A coil spring is provided between the rotating end of the rotating plate 10 and the connecting block 9. The coil spring is responsible for maintaining the state of the rotating plate 10 to prevent the scraping plate 11 from being overturned by a large amount of scum, thereby achieving the scraping effect of the scraping plate 11 on the scraping plate 11;

[0031] As the scraper plate 11 continuously approaches the shovel plate 15, the guide wheels 12 located on both sides of the scraper plate 11 will first enter the pulley groove 14, and then the front surface of the scraper plate 11 will contact the shovel plate 15, thereby scraping the sludge on the front surface of the scraper plate 11 into the slag discharge chamber 6, thereby cleaning the surface of the scraper plate 11. The setting of the pulley groove 14 can prevent the guide wheel 12 from contacting the shovel plate 15 or the arc guide plate 13 first, resulting in the shovel plate 15 being unable to contact the surface of the scraper plate 11, making the cleaning level not thorough enough. When the scraper 11 is brought to the side of the curved guide plate 13, the scraper 11 will be displaced along the inner curved plate surface of the curved guide plate 13 under the action of the transmission belt 8, and the coil spring will continuously drive the scraper 11 close to the plate surface of the curved guide plate 13, and a protruding plate body is provided on the inner curved plate surface of the curved guide plate 13. The guide wheel 12 will continuously hit the protruding plate body under the action of the coil spring, so that the scraper 11 will continuously approach and rebound inside the water body, thereby shaking off the sewage particles attached to the scraper 11, reducing the cost of manual maintenance.

[0032] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A sewage flotation device, comprising an air flotation machine (1), wherein the air flotation machine (1) is provided with a water inlet chamber (2), a mixing chamber (3) and a separation chamber (4) in sequence, and all the chambers are connected in sequence, and the separation chamber (4) is provided with a clean water chamber (5) and a slag discharge chamber (6) connected to the separation chamber (4) at the rear side, characterized in that , also includes: A driving assembly is arranged inside the separation chamber (4), and a plurality of groups of scraping plates (11) arranged in parallel are arranged on the driving assembly, and a shovel plate (15) matching with the scraping plates (11) is fixedly connected to one side of the slag discharge chamber (6).

2. A sewage flotation device according to claim 1, characterized in that: The driving assembly comprises a plurality of driving wheels (7) rotatably connected to the separation chamber (4); a motor matched with the driving wheels (7) is fixedly arranged on one side of the separation chamber (4); the plurality of driving wheels (7) are symmetrically arranged on both sides of the separation chamber (4); a transmission belt (8) is matched and connected between two pairs of driving wheels (7) on the same side; and the scraper plate (11) is matched and arranged between the two transmission belts (8).

3. A sewage flotation device according to claim 2, characterized in that: A plurality of groups of mutually cooperating connecting blocks (9) are fixedly connected to each group of the transmission belts (8); a rotating plate (10) is rotatably connected between two corresponding groups of the connecting blocks (9); a disc spring is provided between the rotating end of the rotating plate (10) and the connecting blocks (9); and the scraping plate (11) is fixedly connected to the rotating plate (10).

4. A sewage flotation device according to claim 1, characterized in that: The slag discharge chamber (6) is fixedly connected to a side of the scraper plate (11) close to the scraper plate (11), and guide wheels (12) that cooperate with the arc guide plate (13) are rotatably connected to both sides of the scraper plate (11). The plate surface of the arc guide plate (13) close to the transmission belt (8) is evenly arranged with protruding plate bodies that cooperate with the guide wheels (12).

5. A sewage flotation device according to claim 4, characterized in that: The shovel plate (15) is fixedly connected to the arc-shaped guide plate (13), and pulley grooves (14) matching with the guide wheels (12) are provided on both sides of the arc-shaped guide plate (13).

6. A sewage flotation device according to claim 2, characterized in that: The width of the slag discharge chamber (6) is the same as the width of the scraper plate (11).

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