An air float

Abstract

This utility model discloses an air flotation machine, relating to the technical field of wastewater treatment equipment. It includes an air flotation machine housing, a skimming mechanism located on the top rear side of the housing, and a scraper cleaning mechanism above the skimming mechanism. The skimming mechanism includes a servo motor, a first transmission chain, and two second transmission chains (left and right). Two scraper mechanisms (upper and lower) are positioned between the opposing faces of the two second transmission chains. Each scraper mechanism includes a connecting and fixing box, with its left and right sides fixedly connected to the opposing faces of the two second transmission chains. A telescopic plate is slidably installed in the inner cavity of the connecting and fixing box near the air flotation machine housing, and a long strip skimming airbag is fixedly installed at the bottom of the telescopic plate. This utility model solves the problem of large water volume carried by traditional scrapers by using a long strip skimming airbag instead of a rigid scraper, combined with an adjustable telescopic structure, effectively reducing the water volume carried when skimming out foam and minimizing water waste.

Description

Technical Field

[0001] This utility model relates to the technical field of sewage treatment equipment, specifically to an air flotation machine. Background Technology

[0002] Air flotation technology is widely used in water supply and drainage and wastewater treatment. It can effectively remove light, buoyant flocs, flocculated colloidal substances, and oily substances that are difficult to settle in wastewater. It has a large treatment capacity, high efficiency, small footprint, simple process and equipment structure, and is easy to use and maintain. It can also eliminate sludge bulking. After chemical reaction, the wastewater enters the mixing zone of the air flotation machine, where it mixes and contacts with the released dissolved air water. This causes the flocs to adhere to the fine air bubbles, and then enters the flotation zone. Under the action of buoyancy, the flocs float to the surface, forming scum. The clear water at the bottom flows to the clear water tank through a collector. Part of it is recycled as dissolved air water, and the remaining clear water flows out through the overflow outlet. After the scum on the surface of the air flotation tank accumulates to a certain thickness, it is scraped into the sludge tank of the air flotation machine by a skimmer and then discharged. The following problems exist with the existing technology:

[0003] Because existing flotation machines mainly rely on a chain to drive a scraper, which repeatedly approaches the floating matter on the surface of the flotation tank and scrapes it off, each scraping will bring a large amount of water into the flotation sludge tank, resulting in water waste. At the same time, because the scraper needs to rotate with the chain to scrape off the floating matter, after long-term use, the floating matter will be attached to the scraper and is difficult to remove, requiring frequent disassembly and cleaning, which is quite inconvenient. Utility Model Content

[0004] This invention provides an air flotation machine to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] An air flotation machine includes an air flotation machine housing. A skimming mechanism is provided on the top rear side of the air flotation machine housing. A scraper cleaning mechanism is provided above the skimming mechanism. The skimming mechanism includes a servo motor, a first transmission chain, and two second transmission chains (left and right). Two scraper mechanisms (upper and lower) are provided between the opposite faces of the two second transmission chains. The scraper mechanism includes a connecting and fixing box. The left and right sides of the connecting and fixing box are respectively fixedly connected to the opposite faces of the two second transmission chains. A telescopic plate is slidably installed in the inner cavity of the connecting and fixing box near the air flotation machine housing. A long strip skimming airbag is fixedly installed at the bottom of the telescopic plate.

[0007] A further improvement of this utility model is that the servo motor drives the first transmission chain to rotate, the first transmission chain is connected to the second transmission chain, and the two second transmission chains drive each other.

[0008] A further improvement of this utility model is that: a PAC reaction tank and a PAM reaction tank are provided on the front side of the inner cavity of the air flotation machine shell, the PAC reaction tank is located to the left of the PAM reaction tank, an air flotation tank is provided on the rear side of the PAC reaction tank and the PAM reaction tank, the width of the long strip skimmer airbag is the same as the width of the inner cavity of the air flotation tank, the transmission length of the second transmission chain is the same as the length of the air flotation tank, a scum discharge tank is provided on the rear side of the air flotation tank, and a clear water tank is provided on the rear side of the scum discharge tank.

[0009] A further improvement of this utility model is that: threaded holes penetrating the inner cavity are provided on the lower left and right sides of the connecting fixing box, and a threaded limiting rod is installed on the inner ring of the threaded hole, and a disassembly knob is fixedly installed on the end of the threaded limiting rod away from the connecting fixing box.

[0010] A further improvement of this utility model is that: the telescopic plate is provided with sliding grooves on both the left and right sides, the two sliding grooves are respectively located between the opposite faces of the two threaded holes, and the opposite ends of the two threaded limiting rods are respectively slidably connected to the sliding grooves on the left and right sides of the telescopic plate.

[0011] A further improvement of this utility model is that: the scraper cleaning mechanism includes two columns, left and right, which are respectively fixedly installed on the top left and right sides of the air flotation machine housing. A water pump is fixedly installed on the left side of the left column, and the output end of the water pump extends through to the right side of the left column and is fixedly connected to a water supply pipe. Several water heads are evenly fixedly connected to the bottom of the water supply pipe. The water supply pipe is located at the top of the upper scraper mechanism, and the width of the water supply pipe is consistent with the width of the air flotation tank cavity. The input end of the water pump is fixedly connected to a water suction pipe, and the other end of the water suction pipe extends through to the bottom of the air flotation tank cavity.

[0012] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0013] 1. This utility model provides an air flotation machine, which replaces the hard scraper with a long strip of air bag and combines it with an adjustable telescopic structure to solve the problem of large water volume carried by traditional scrapers, effectively reducing the water volume carried when scraping out foam and reducing water waste.

[0014] 2. This utility model provides an air flotation machine, which can clean the long strip of foam scraping airbags through the water supply pipe and water head located above the scraper mechanism. The water source generated during cleaning, along with the floating matter attached to the airbags, can flow into the air flotation tank for scraping again, preventing the long strip of foam scraping airbags from solidifying due to prolonged lack of cleaning and reducing the frequency of disassembly and cleaning of the long strip of foam scraping airbags. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the skimming mechanism of the present invention;

[0017] Figure 3 This is a schematic diagram of the scraper mechanism of the present invention.

[0018] Figure 4 This is a cross-sectional view of the connection and fixing box of the present invention.

[0019] Figure 5 This is a schematic diagram of the scraper cleaning mechanism of this utility model.

[0020] In the diagram: 1. Flotation unit housing; 11. PAC reaction tank; 12. PAM reaction tank; 13. Flotation tank; 14. Scum discharge tank; 15. Clear water tank; 2. Scraping mechanism; 21. Servo motor; 22. First transmission chain; 23. Second transmission chain; 24. Scraper mechanism; 241. Connecting and fixing box; 2411. Threaded hole; 2412. Threaded limit rod; 2413. Disassembly knob; 242. Telescopic plate; 2421. Slide groove; 243. Long strip scum scraper airbag; 3. Scraper cleaning mechanism; 31. Column; 32. Water pump; 33. Water supply pipe; 34. Water head; 35. Pumping pipe. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1 , Figure 2 , Figure 3As shown, this utility model provides an air flotation machine, including an air flotation machine housing 1. A skimming mechanism 2 is provided on the top rear side of the air flotation machine housing 1, and a scraper cleaning mechanism 3 is provided above the skimming mechanism 2. The skimming mechanism 2 includes a servo motor 21, a first transmission chain 22, and two second transmission chains 23 on the left and right. Two scraper mechanisms 24 are provided between the opposite faces of the two second transmission chains 23. The scraper mechanism 24 includes a connecting fixing box 241. The left and right sides of the connecting fixing box 241 are respectively fixedly connected to the opposite faces of the two second transmission chains 23. A telescopic plate 242 is slidably installed in the inner cavity of the connecting fixing box 241 near the air flotation machine housing 1. A long strip skimming airbag 243 is fixedly installed at the bottom of the telescopic plate 242. The servo motor 21 drives the first transmission chain 22 to rotate. Chain 22 is connected to the second transmission chain 23, and the two second transmission chains 23 drive each other. PAC reaction tank 11 and PAM reaction tank 12 are arranged on the front side of the inner cavity of the air flotation machine shell 1. PAC reaction tank 11 is located to the left of PAM reaction tank 12. Air flotation tank 13 is arranged on the rear side of PAC reaction tank 11 and PAM reaction tank 12. The width of the long strip skimmer airbag 243 is the same as the width of the inner cavity of air flotation tank 13. The transmission length of the second transmission chain 23 is the same as the length of air flotation tank 13. Scum discharge tank 14 is arranged on the rear side of air flotation tank 13. Clear water tank 15 is arranged on the rear side of scum discharge tank 14. PAC reaction tank 11 and PAM reaction tank 12 are used for flocculation reaction. Then the water source enters the inner cavity of air flotation tank 13. Clear water tank 15 is used to discharge clear water. These are all functions that are built into the existing technology.

[0023] When the servo motor 21 starts, it drives the gear to rotate via the first transmission chain 22. The gear then drives the gears on both sides of the two rotating rods above the flotation tank 13 to rotate, thereby causing the two second transmission chains 23 to move slowly and synchronously. This drives the two scraper mechanisms 24 to rotate and move as a whole, and causes the two scraper mechanisms 24 to contact the water surface in the flotation tank 13 one by one. When the long strip of foam scraping airbag 243 contained in the scraper mechanism 24 moves downward, it can contact the water surface and move upward with the help of buoyancy. This controls the telescopic plate 242 to retract into the inner cavity of the connecting fixing box 241. At this time, the long strip of foam scraping airbag 243 just floats on the water surface in the inner cavity of the flotation tank 13, thereby scraping the floating objects on the water surface to the rear until they fall into the inner cavity of the scum discharge tank 14 for discharge, effectively reducing the amount of water carried when scraping off the foam and avoiding waste.

[0024] like Figure 4As shown, threaded holes 2411 penetrating the inner cavity are provided on the lower left and right sides of the connecting fixing box 241. A threaded limiting rod 2412 is installed on the inner ring of the threaded hole 2411. A disassembly knob 2413 is fixedly installed on the end of the threaded limiting rod 2412 away from the connecting fixing box 241. Slide grooves 2421 are provided on the left and right sides of the telescopic plate 242. The two slide grooves 2421 are respectively located between the opposite faces of the two threaded holes 2411, and the opposite ends of the two threaded limiting rods 2412 are slidably connected to the slide grooves 2421 on the left and right sides of the telescopic plate 242.

[0025] When the telescopic plate 242 extends or retracts within the cavity of the connecting fixing box 241, it can be kept in a limited position by the sliding connection between the two sliding grooves 2421 and the two threaded limiting rods 2412, which does not affect the telescopic function and prevents it from falling off. When it is necessary to disassemble and repair the long strip of desiccant airbag 243, it is only necessary to rotate the two disassembly knobs 2413 to drive the threaded limiting rods 2412 out of the sliding grooves 2421, thereby releasing the limitation on the telescopic plate 242, so that the telescopic plate 242 and the long strip of desiccant airbag 243 can be removed.

[0026] like Figure 5 As shown, the scraper cleaning mechanism 3 includes two columns 31, one on the left and one on the right. The two columns 31 are fixedly installed on the top left and right sides of the air flotation machine housing 1, respectively. A water pump 32 is fixedly installed on the left side of the left column 31. The output end of the water pump 32 passes through to the right side of the left column 31 and is fixedly connected to a water supply pipe 33. Several water flow heads 34 are evenly fixedly connected to the bottom of the water supply pipe 33. The water supply pipe 33 is located at the top of the upper scraper mechanism 24, and the width of the water supply pipe 33 is the same as the width of the inner cavity of the air flotation tank 13. A water pump 35 is fixedly connected to the input end of the water pump 32. The other end of the water pump 35 passes through to the bottom of the inner cavity of the air flotation tank 13.

[0027] When the two scraper mechanisms 24 alternately pass over the air flotation machine housing 1, the water source below the foam in the inner cavity of the air flotation tank 13 can be extracted by starting the water pump 32 on one side of the column 31 and injected into the inner cavity of the water supply pipe 33. Then, it can slowly flow out through several water heads 34, thereby rinsing the floating matter attached to the surface of the long strip foam scraper airbag 243 below the water head 34. Because it flows out slowly, it can effectively avoid water splashing. The floating matter can then flow back into the air flotation tank 13 with the water flow for the next scraping, effectively reducing the cleaning frequency of the long strip foam scraper airbag 243.

[0028] The working principle of this air flotation machine will be explained in detail below.

[0029] like Figure 1-5As shown, when the servo motor 21 starts, it drives the gear to rotate via the first transmission chain 22. The gear then drives the gears on both sides of the two rotating rods above the flotation tank 13 to rotate, thereby causing the two second transmission chains 23 to move slowly and synchronously. This drives the two scraper mechanisms 24 to rotate and move as a whole, and causes the two scraper mechanisms 24 to contact the water surface in the flotation tank 13 one by one. When the long strip of foam scraping airbag 243 contained in the scraper mechanism 24 moves downward, it can contact the water surface and move upward with the help of buoyancy. This controls the telescopic plate 242 to retract into the inner cavity of the connecting fixing box 241. At this time, the long strip of foam scraping airbag 243 just floats on the water surface in the inner cavity of the flotation tank 13, thereby scraping the floating objects on the water surface backward until they fall into the inner cavity of the scum discharge tank 14 for discharge. When the telescopic plate 242 extends and retracts in the inner cavity of the connecting fixing box 241, it can be kept in a limited position by the sliding connection between the two sliding grooves 2421 and the two threaded limit rods 2412, without affecting the While ensuring the telescopic function, it also prevents the object from falling off. When the long strip of desiccant airbag 243 needs to be disassembled for maintenance, simply rotate the two disassembly knobs 2413 to drive the threaded limit rod 2412 out of the slide groove 2421, thereby releasing the limit on the telescopic plate 242. The telescopic plate 242 and the long strip of desiccant airbag 243 can then be removed. When the two scraper mechanisms 24 pass over the air flotation machine housing 1 in an alternating manner, the water pump 32 on one side of the column 31 can be started to draw water from the air flotation tank 13 cavity below the desiccant and inject it into the water supply pipe 33 cavity. Then, the water will slowly flow out through several water heads 34, thereby rinsing the floating matter attached to the surface of the long strip of desiccant airbag 243 below the water heads 34. Because the water flows out slowly, it can effectively prevent water splashing. The floating matter can then flow back into the air flotation tank 13 with the water flow for the next scraping, effectively reducing the cleaning frequency of the long strip of desiccant airbag 243.

[0030] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An air flotation machine, comprising an air flotation machine shell (1), characterized in that: A skimming mechanism (2) is provided on the top rear side of the air flotation machine housing (1). A scraper cleaning mechanism (3) is provided above the skimming mechanism (2). The skimming mechanism (2) includes a servo motor (21), a first transmission chain (22), and two second transmission chains (23) on the left and right. Two scraper mechanisms (24) are provided between the opposite faces of the two second transmission chains (23). The scraper mechanism (24) includes a connecting fixing box (241). The left and right sides of the connecting fixing box (241) are fixedly connected to the opposite faces of the two second transmission chains (23). A telescopic plate (242) is slidably installed in the inner cavity of the connecting fixing box (241) near the air flotation machine housing (1). A long strip skimming airbag (243) is fixedly installed at the bottom of the telescopic plate (242).

2. The air flotation machine according to claim 1, characterized in that: The servo motor (21) drives the first transmission chain (22) to rotate. The first transmission chain (22) is connected to the second transmission chain (23), and the two second transmission chains (23) drive each other.

3. The air flotation machine according to claim 1, characterized in that: The air flotation machine housing (1) has a PAC reaction tank (11) and a PAM reaction tank (12) on the front side of its inner cavity. The PAC reaction tank (11) is located to the left of the PAM reaction tank (12). An air flotation tank (13) is set behind the PAC reaction tank (11) and the PAM reaction tank (12). The width of the long strip skimmer airbag (243) is the same as the width of the inner cavity of the air flotation tank (13). The transmission length of the second transmission chain (23) is the same as the length of the air flotation tank (13). A scum discharge tank (14) is set behind the air flotation tank (13). A clear water tank (15) is set behind the scum discharge tank (14).

4. The air flotation machine according to claim 1, characterized in that: The connecting fixing box (241) has threaded holes (2411) that penetrate its inner cavity on both the lower left and right sides. A threaded limiting rod (2412) is installed on the inner ring of the threaded hole (2411). A disassembly knob (2413) is fixedly installed on the end of the threaded limiting rod (2412) away from the connecting fixing box (241).

5. The air flotation machine according to claim 4, characterized in that: The telescopic plate (242) has sliding grooves (2421) on both the left and right sides. The two sliding grooves (2421) are located between the opposite faces of the two threaded holes (2411), and the opposite ends of the two threaded limit rods (2412) are slidably connected to the sliding grooves (2421) on the left and right sides of the telescopic plate (242).

6. The air flotation machine according to claim 3, characterized in that: The scraper cleaning mechanism (3) includes two columns (31) on the left and right sides respectively. The two columns (31) are fixedly installed on the top left and right sides of the air flotation machine housing (1). A water pump (32) is fixedly installed on the left side of the left column (31). The output end of the water pump (32) extends through to the right side of the left column (31) and is fixedly connected to a water supply pipe (33). Several water heads (34) are evenly fixedly connected to the bottom of the water supply pipe (33). The water supply pipe (33) is located at the top of the upper scraper mechanism (24), and the width of the water supply pipe (33) is consistent with the width of the inner cavity of the air flotation tank (13). The input end of the water pump (32) is fixedly connected to a water pumping pipe (35), and the other end of the water pumping pipe (35) extends through to the bottom of the inner cavity of the air flotation tank (13).

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