Air flotation machine for purifying river water

Abstract

The utility model discloses an air floatation machine for river water purification, which comprises an air floatation machine body, the air floatation machine body comprises a reaction tank, an air floatation tank and a clean water tank which are arranged in sequence, the reaction tank comprises a mixing area communicated with a water inlet pipe and a flocculation area communicated with the mixing area, the air floatation tank comprises a contact area communicated with the flocculation area and a separation area communicated with the contact area, the separation area is communicated with a clean water tank, the clean water tank is communicated with a water outlet pipe, a dissolved air release device is arranged in the contact area and is communicated with a dissolved air tank, and a mud removal device and a slag removal device are respectively arranged in the separation area. The mud removal device comprises at least one mud collection hopper arranged at the bottom, the bottom of the mud collection hopper is communicated with a mud discharge pipe, the slag removal device comprises a mud scraper arranged at the upper part and a slag collection tank arranged below the mud scraper, the slag collection tank is communicated with a slag discharge pipe, mud removal and slag discharge can be automatically carried out, and the labor intensity of operators is greatly reduced.

Description

Technical Field

[0001] The present application relates to the field of river purification and treatment, and in particular to an air flotation machine for river water purification. Background Art

[0002] At present, all regions are accelerating the comprehensive improvement of urban rivers and lakes, continuously improving the quality of the water environment, and building ecologically livable cities with a good environment and harmonious relationship between people and water. Existing urban river management technologies are mainly based on in-situ restoration technologies with ecological measures. In-situ ecological restoration technology is a comprehensive technical measure that includes underwater aeration and oxygenation, planting aquatic plants, and placing artificial fillers in the water body. Its main goal is to remove nutrient pollutants from the water body, gradually reduce the concentration of pollutants in the water body, and improve water quality. These technologies can effectively enhance the self-purification capacity of the water body, but the effect is slow and the engineering workload is large. In addition, ecological measures cause pollutants to transform and transfer in the water body, and they are not ultimately removed from the system. Pollutants need to be discharged from the water environment through measures such as artificial plant harvesting and dredging.

[0003] In view of this, the applicant strives to develop a highly integrated river water purification flotation machine that can achieve automatic silt removal and solve the problem of high manual labor intensity in current maintenance work. Utility Model Content

[0004] The main purpose of this application is to provide an air flotation machine for river water purification, which can automatically remove mud and slag, greatly reducing the labor intensity of operators.

[0005] In order to achieve the above-mentioned objectives, in a first aspect, the present application provides an air flotation machine for river water purification, comprising an air flotation machine body, the air flotation machine body comprising a reaction tank, an air flotation tank and a clear water tank arranged in sequence, the reaction tank comprising a mixing zone connected to a water inlet pipe and a flocculation zone connected to the mixing zone, the air flotation tank comprising a contact zone connected to the flocculation zone and a separation zone connected to the contact zone, the separation zone being connected to the clear water tank, the clear water tank being connected to a water outlet pipe, a dissolved air release device being provided in the contact zone, the dissolved air release device being connected to a dissolved air tank, a mud removal device and a slag removal device being respectively provided in the separation zone, the mud removal device comprising at least one mud collecting hopper arranged at the bottom, the bottom of the mud collecting hopper being connected to a mud discharge pipe, the slag removal device comprising a mud scraper arranged at the top and a slag collection trough arranged below the mud scraper, the slag collection trough being connected to a slag discharge pipe.

[0006] A further improvement is that the air dissolving tank is connected to one end of a reflux pipe via a reflux pump, the other end of the reflux pipe is connected to a clean water tank, and the air dissolving tank is also connected to an air compressor.

[0007] A further improvement is that the bottom surface of the slag collecting trough is an inclined surface with a slope of 0.5%-1%, and the slag discharge pipe is connected to the lowest point of the slag collecting trough.

[0008] A further improvement is that a baffle is provided between the separation zone and the contact zone, a guide plate is connected to the upper portion of the baffle, and an angle between the guide plate and the baffle is 105-135°.

[0009] A further improvement is that the separation zone is connected to the clean water tank through a water collecting device, which includes at least one water collecting pipe. The outer wall of the water collecting pipe is provided with a plurality of water collecting holes, and the length direction of the water collecting holes extends along the length direction of the water collecting pipe.

[0010] A further improvement is that a water distribution device is provided in the contact area, and the water distribution device includes at least one water distribution pipe, and the outer wall of the water distribution pipe is provided with a plurality of water distribution holes, and the length direction of the water distribution holes extends along the length direction of the water distribution pipe.

[0011] A further improvement is that the flocculation zone includes a first flocculation zone connected to the mixing zone through a first water pipe, a second flocculation zone connected to the first flocculation zone through a water hole, and the second flocculation zone is connected to the water distribution pipe through a second water pipe.

[0012] A further improvement is that the reaction tank, the flotation tank and the clean water tank are all connected to an exhaust pipe.

[0013] A further improvement is that a stirrer is provided in both the mixing zone and the second flocculation zone, and the power of the stirrer in the mixing zone is greater than the power of the stirrer in the second flocculation zone.

[0014] A further improvement is that it also includes an equipment room, in which the reflux pump, the dissolved water tank and the air compressor are all arranged, and the equipment room is also provided with a power distribution cabinet and a control valve.

[0015] The utility model provides an air flotation machine for river water purification. Compared with the prior art, the utility model has the following beneficial effects: since a mud removal device and a slag removal device are respectively provided in the separation zone, flocculants in the river water contact with and adhere to microbubbles, and in the process of the microbubbles moving upward, algae and fine suspended impurities in the river water float to the water surface together, and the slag is discharged into the slag collecting tank through the mud scraper, and impurities with a specific gravity greater than that of water are naturally settled into the mud collecting hopper and finally discharged through the mud discharge pipe and the slag discharge pipe respectively. Therefore, the entire equipment does not need manual desilting during maintenance, which greatly reduces labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings that constitute part of this application are used to provide a further understanding of this application and make other features, objects and advantages of this application more apparent. The illustrative embodiment drawings of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

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

[0018] Figure 2 yes Figure 1 AA cross-sectional view;

[0019] Figure 3 yes Figure 1 Cross-sectional view at BB;

[0020] Figure 4 It is a schematic diagram of the water collection pipe or water distribution pipe.

[0021] Among them: 1. Flotation machine body; 2. Equipment room; 31. Mixing zone; 321. First flocculation zone; 322. Second flocculation zone; 41. Contact zone; 42. Separation zone; 43. Baffle; 44. Guide plate; 45. Slag collecting trough; 46. Mud collecting hopper; 5. Clear water tank; 6. Gate; 7. Sludge scraper; 8. Return pump; 9. Power distribution cabinet; 10. Air compressor; 11. Dissolved air tank; 12. Agitator; 13. Dissolved air release device; N1. Water inlet pipe; N2. First water pipe; N3. Second water pipe; N4. Water distribution pipe; N5. Water collecting pipe; N6. Water outlet pipe; N7. Return pipe; N8. Drain pipe; N9. Mud discharge pipe; N10. Slag discharge pipe; N11. Water hole. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention 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, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0025] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0026] Additionally, the term "plurality" shall mean two or more.

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] like Figures 1-4The figure shows a flotation machine for river water purification. The flotation machine comprises a main body, which in sequence comprises an equipment room 2, a reaction tank, a flotation tank, and a clear water tank 5. The reaction tank comprises a mixing zone 31 and a flocculation zone, while the flotation tank comprises a contact zone 41 and a separation zone 42. A water inlet pipe N1 is located at the top of the mixing zone 31, and a first water passage N2 is located at the bottom opposite the mixing zone 31, connecting to the first flocculation zone 321. A water passage hole N11 is located at the top of the partition between the first flocculation zone 321 and the second flocculation zone 322. A second water passage N3 is located at the bottom of the second flocculation zone 322, connecting to the contact zone 41. Both the mixing zone 31 and the second flocculation zone 322 are equipped with an agitator 12. The second water passage N3 connects to a water distribution pipe N4 at the contact zone 41. The water distribution pipe N4 has a horizontal water distribution hole at its bottom, with a width of 30-50 mm and a length of 300-500 mm. A baffle 43 is provided between the contact area 41 and the separation area 42. A guide plate 44 is provided on the upper part of the baffle 43, and the angle between the guide plate 44 and the baffle 43 is 105~135°; a scraper 7 is provided on the upper part of the separation area 42, and a slag collecting trough 45 is provided in the middle and upper part. The slope of the bottom plate of the slag collecting trough 45 is 0.5%~1%. A slag discharge pipe N10 is provided at the lower end of the slag collecting trough 45, and one end of the slag discharge pipe N10 extends out of the body; a mud collecting hopper 46 is provided at the lower part of the separation area 42, and there are no less than 3 mud collecting hoppers 46. A mud discharge N9 is provided at the bottom of the mud hopper; a water collecting pipe N5 connected to the clear water tank 5 is provided in the middle and lower part of the separation area 42. The number of water collecting pipes N5 is no less than 3, and the water collecting pipes N5 are provided with water collection holes in the horizontal direction and at the bottom. The water collection holes are 40~60mm wide and 400~600mm long. The clear water tank 5 is equipped with a liquid level regulating gate 6. A water outlet pipe is located in the upper middle portion of one end of the clear water tank 5, and a return pipe N7 is located in the lower middle portion of the other end. The other end of the return pipe N7 extends into the equipment room 2 and connects to the reflux pump 8. The equipment room 2 is equipped with the reflux pump 8, an air compressor 10, an air dissolving tank 11, a power distribution cabinet 9, and control valves. The water output from the reflux pump 8 is pumped into the air dissolving tank 11. The air outlet pipe of the air compressor 10 connects to the air dissolving tank 11. The air-water mixture in the air dissolving tank 11 is released into the contact area 41 through the air dissolving release device 13. The reaction tank, flotation tank, and clear water tank 5 are all equipped with a drain pipe N8.

[0029] Working principle and process: River water is pumped into the mixing zone 31 through the water inlet pipe. PAC and PAM flocculants are added to the mixing zone 31, and the agitator 12 is turned on. The mixing zone 31 uses the agitator 12 with a relatively high rotation speed to quickly and fully mix the incoming water and the chemicals. The river water fully mixed with the chemicals enters the second flocculation zone 322 through the first water pipe N2 and the water hole N11. The flocculation zone uses the agitator 12 with a relatively low rotation speed to produce flocs in the river water fully mixed with the chemicals. Clean water returning from the clean water tank 5 is pressurized by the return pump 8 and then enters the air dissolving tank 11 along with compressed air generated by the air compressor 10. The increased pressure increases the solubility of air in the water, forming supersaturated dissolved air water. The dissolved air water is suddenly depressurized by the release device, causing the air to be steadily released in the form of microbubbles in the contact zone 41. Flocculants in the river water come into contact with and adhere to the microbubbles in this contact zone 41. As the microbubbles move upward, algae and fine suspended impurities in the river water rise to the surface. Scum is discharged by the scraper 7 into the scum collection tank 45. Impurities heavier than water naturally settle into the sludge collection hopper 46. The clean water, free of impurities, flows through the water collection pipe N5 into the clean water tank 5 and finally into the river through the outlet pipe N6, thus purifying the river water. The scum and sludge are then discharged from the flotation unit 1 through the scum discharge pipe N10 and the sludge discharge pipe N9, respectively, for external disposal. The river water purification process takes 25 to 35 minutes from mixing with the chemicals, producing flocs, contacting and adhering to microbubbles, to separation of impurities. The river water purification process is very fast and has a good purification effect.

[0030] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An air flotation machine for river water purification, characterized in that: It includes an air flotation machine body, which includes a reaction tank, an air flotation tank and a clean water tank arranged in sequence. The reaction tank includes a mixing zone connected to a water inlet pipe and a flocculation zone connected to the mixing zone. The air flotation tank includes a contact zone connected to the flocculation zone and a separation zone connected to the contact zone. The separation zone is connected to the clean water tank, and the clean water tank is connected to a water outlet pipe. A dissolved air release device is provided in the contact zone, and the dissolved air release device is connected to a dissolved air tank. A mud removal device and a slag removal device are respectively provided in the separation zone. The mud removal device includes at least one mud collecting hopper provided at the bottom, and the bottom of the mud collecting hopper is connected to a mud discharge pipe. The slag removal device includes a scraper provided at the top and a slag collection trough provided below the scraper, and the slag collection trough is connected to a slag discharge pipe.

2. The air flotation machine for river water purification according to claim 1, characterized in that: The air dissolving tank is connected to one end of a reflux pipe through a reflux pump, the other end of the reflux pipe is connected to a clean water tank, and the air dissolving tank is also connected to an air compressor.

3. The air flotation machine for river water purification according to claim 1, characterized in that: The bottom surface of the slag collecting trough is an inclined surface with a slope of 0.5%-1%, and the slag discharge pipe is connected to the lowest point of the slag collecting trough.

4. The air flotation machine for river water purification according to claim 1, characterized in that: A baffle is provided between the separation zone and the contact zone, the upper portion of the baffle is connected to a guide plate, and the angle between the guide plate and the baffle is 105-135°.

5. The air flotation machine for river water purification according to claim 1, characterized in that: The separation zone is connected to the clean water tank through a water collecting device, which includes at least one water collecting pipe. The outer wall of the water collecting pipe is provided with a plurality of water collecting holes, and the length direction of the water collecting holes extends along the length direction of the water collecting pipe.

6. The air flotation machine for river water purification according to claim 1, characterized in that: A water distribution device is provided in the contact area. The water distribution device includes at least one water distribution pipe. A plurality of water distribution holes are provided on the outer wall of the water distribution pipe. The length direction of the water distribution holes extends along the length direction of the water distribution pipe.

7. The air flotation machine for river water purification according to claim 6, characterized in that: The flocculation zone includes a first flocculation zone connected to the mixing zone through a first water pipe, a second flocculation zone connected to the first flocculation zone through a water hole, and the second flocculation zone is connected to the water distribution pipe through a second water pipe.

8. The air flotation machine for river water purification according to claim 1, characterized in that: The reaction tank, the flotation tank and the clean water tank are all connected with an exhaust pipe.

9. The air flotation machine for river water purification according to claim 7, characterized in that: Agitators are provided in both the mixing zone and the second flocculation zone, and the power of the agitator in the mixing zone is greater than the power of the agitator in the second flocculation zone.

10. The air flotation machine for river water purification according to claim 2, characterized in that: It also includes an equipment room, in which the reflux pump, the dissolved air tank and the air compressor are all arranged. The equipment room is also provided with a power distribution cabinet and a control valve.

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