Wastewater treatment air flotation device

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to a wastewater treatment air floatation device which comprises an air floatation tank, a slag scraping plate, a driving mechanism, a filter plate, an overflow plate, a water level sensor, a dissolved air releaser, a first exhaust pipe, a flushing pipeline and a controller, the controller controls the water surface of the wastewater in the air floatation tank to be higher than the upper edge of the overflow plate, the controller controls the dissolved air releaser to release air into the air floatation tank, so that tiny bubbles adsorb suspended matters in the wastewater to form scum which floats on the water surface of the wastewater, and then the driving mechanism drives the scum scraping plate to move in the vertical direction and the X direction; the scum is scraped to the position above the filter plate, and then the scum is discharged through the scum discharge port through the flushing pipeline, the water outlet pipeline of the air floatation tank and the scum discharge port.

Description

Technical Field

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

[0002] In the process of flotation wastewater treatment, scum is formed due to the combination of bubbles with suspended matter, grease and other impurities in the wastewater. The Chinese patent with authorization announcement number CN216997757U discloses a flotation device for wastewater treatment, which specifically discloses that a top plate is fixedly installed on the top of the vertical plate, a servo motor is fixedly installed on the right side of the vertical plate, a screw is fixedly connected to the output end of the servo motor, a screw sleeve is threadedly connected to the outer surface of the screw, a first cylinder is fixedly installed on the bottom of the screw sleeve, and a scraper plate is fixedly installed on the bottom of the first cylinder. The patent can clean the scum. When the scum fills the entire scraper plate, due to the contraction of the first cylinder, part of the scum will fall from the scraper plate, resulting in poor scum cleaning effect. Therefore, a wastewater treatment flotation device is urgently needed to improve the scum cleaning effect. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a wastewater treatment flotation device which can improve the cleaning effect of floating scum.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a wastewater treatment flotation device, comprising:

[0005] An air flotation tank, one side of the air flotation tank is provided with a water inlet pipe, and a first solenoid valve is provided on the water inlet pipe; a water outlet pipe is provided at the bottom of the side wall of the other side of the air flotation tank, and a second solenoid valve is provided on the water outlet pipe; a slag discharge port is provided on the Y-direction opposite side of the air flotation tank, and a slag discharge valve is provided at the slag discharge port;

[0006] A scraper plate, the scraper plate is located above the flotation tank, and the scraper plate moves along the X direction and the vertical direction to connect the side wall of the flotation tank;

[0007] A driving mechanism, the driving mechanism is used to drive the scraper plate to move along the X direction and the vertical direction;

[0008] The filter plate is connected to the flotation tank in an inclined manner along the Y direction, the lower end of the filter plate is connected to the slag discharge port, and the upper end of the filter plate is connected to the inner wall of the flotation tank on the Y direction side;

[0009] An overflow plate, the overflow plate is connected to the opposite side of the filter plate X;

[0010] A water level sensor is disposed in the flotation tank and is used to receive a signal indicating that the water level of the wastewater is higher than the upper edge of the overflow plate;

[0011] A dissolved air releaser, wherein a connecting pipe is provided on the dissolved air releaser;

[0012] A first exhaust pipe, one end of which is connected to the connecting pipe, and the other end of which extends into the bottom of the flotation tank. The first exhaust pipe is provided with a plurality of second exhaust pipes arranged and distributed along the X direction, and the second exhaust pipe is provided with a plurality of exhaust holes arranged and distributed along the Y direction, and the axial direction of the exhaust hole is the vertical direction;

[0013] A flushing pipe, one end of which is connected to the water pipe through a three-way joint, the three-way joint is located on the X-direction side of the second solenoid valve, a water pump is provided on the flushing pipe, the other end of the flushing pipe is located above the high end of the filter plate, and the radius of the flushing pipe is smaller than the radius of the drainage pipe;

[0014] A controller, the controller is electrically connected to the first solenoid valve, the second solenoid valve, the slag discharge valve, the driving mechanism, the water pump and the dissolved air releaser;

[0015] In the first state, the first solenoid valve is opened, the second solenoid valve is closed, the slag discharge port is closed, and the scraper plate is against the inner wall of the flotation tank in the opposite direction of the X direction;

[0016] In the second state, the first solenoid valve is closed, the scraper plate is against the upper edge of the overflow plate, and the slag discharge valve and the second solenoid valve are opened.

[0017] Furthermore, the driving mechanism includes a screw guide rail assembly, a slider and a first cylinder. The screw guide rail assembly is connected to the Y-direction side wall of the flotation tank, the axial direction of the screw guide rail assembly is the X-direction, the slider is slidably connected to the screw guide rail assembly, the cylinder body of the first cylinder is connected to the slider, the axial direction of the cylinder body of the first cylinder is the vertical direction, the first cylinder is located above the flotation tank, and the scraper plate is connected to the piston rod of the first cylinder.

[0018] Furthermore, the second exhaust pipe is perpendicular to the first exhaust pipe.

[0019] Furthermore, the wastewater treatment flotation device also includes a slag collection box, which is connected to the slag discharge port, an opening is provided at the top of the slag collection box, the shape of the slag discharge valve matches the opening, the slag discharge valve moves in a vertical direction, a second cylinder is provided on the side wall of the flotation tank, the axial direction of the cylinder body of the second cylinder is in the vertical direction, the slag discharge valve is connected to the piston rod of the second cylinder, and the second cylinder drives the slag discharge valve to switch between the first state and the second state;

[0020] In the first state, the slag discharge valve covers the slag discharge port and is closed;

[0021] In the second state, the slag discharge valve is located above the slag discharge port and is open.

[0022] Furthermore, in the second state, the lower edge of the scraper plate is 2-3 cm lower than the upper edge of the overflow plate.

[0023] The beneficial effect of the utility model is that, compared with the prior art, the cleaning effect of slag in the flotation tank is improved by arranging the scraper plate, the overflow plate, the filter plate, the slag discharge port and the flushing pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of a wastewater treatment flotation device according to a specific implementation method of the utility model;

[0025] Figure 2 It is a structural schematic diagram of another angle of a wastewater treatment flotation device according to a specific embodiment of the utility model;

[0026] Figure 3 It is a side view of a wastewater treatment flotation device according to a specific embodiment of the utility model;

[0027] Figure 4 for Figure 3 A-direction cross-sectional view;

[0028] Figure 5 This is the circuit connection diagram of the controller.

[0029] Description of symbols

[0030] 1. Air flotation tank; 11. Water inlet pipe; 111. First solenoid valve; 12. Water outlet pipe; 121. Second solenoid valve; 13. Slag discharge port; 14. Slag discharge valve;

[0031] 2. Scraper plate;

[0032] 3. Driving mechanism; 31. Screw guide rail assembly; 32. Slider; 33. First cylinder;

[0033] 4. Filter plate;

[0034] 5. Overflow plate;

[0035] 6. Water level sensor;

[0036] 7. Dissolved gas release device;

[0037] 8. first exhaust pipe; 81. second exhaust pipe; 811. exhaust hole;

[0038] 9. Flushing pipeline; 91. Three-way joint; 92. Water pump;

[0039] 10. Controller;

[0040] 101. scum collection box; 1011. opening;

[0041] 102. Second cylinder. DETAILED DESCRIPTION

[0042] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0043] Please refer to Figures 1 to 5 , a wastewater treatment flotation device, comprising:

[0044] An air flotation tank 1, a water inlet pipe 11 is provided on one side of the air flotation tank 1, and a first solenoid valve 111 is provided on the water inlet pipe 11; a water outlet pipe 12 is provided at the bottom of the side wall of the other side of the air flotation tank 1, and a second solenoid valve 121 is provided on the water outlet pipe 12; a slag discharge port 13 is provided on the opposite side of the Y direction of the air flotation tank 1, and a slag discharge valve 14 is provided at the slag discharge port 13;

[0045] A scraper plate 2, the scraper plate 2 is located above the air flotation tank 1, and the scraper plate 2 moves along the X direction and the vertical direction to connect the side wall of the air flotation tank 1;

[0046] A driving mechanism 3, the driving mechanism 3 is used to drive the scraper plate 2 to move along the X direction and the vertical direction;

[0047] The filter plate 4 is connected to the flotation tank 1 along the Y direction, the lower end of the filter plate 4 is connected to the slag discharge port 13, and the upper end of the filter plate 4 is connected to the inner wall of the flotation tank 1 on the Y direction;

[0048] An overflow plate 5, the overflow plate 5 is connected to the opposite side of the filter plate 4 in the X direction;

[0049] A water level sensor 6 is disposed in the flotation tank 1 and is used to receive a signal indicating that the water level of the wastewater is higher than the upper edge of the overflow plate 5;

[0050] A dissolved air releaser 7, on which a connecting pipe is provided;

[0051] A first exhaust pipe 8, one end of which is connected to the connecting pipe, and the other end of which extends into the bottom of the flotation tank 1. The first exhaust pipe 8 is provided with a plurality of second exhaust pipes 81 arranged and distributed along the X direction, and the second exhaust pipe 81 is provided with a plurality of exhaust holes 811 arranged and distributed along the Y direction, and the axial direction of the exhaust hole 811 is the vertical direction;

[0052] A flushing pipe 9, one end of which is connected to the water pipe through a three-way joint 91, the three-way joint 91 is located on the X-side of the second solenoid valve 121, a water pump 92 is provided on the flushing pipe 9, the other end of the flushing pipe 9 is located above the high end of the filter plate 4, and the radius of the flushing pipe 9 is smaller than the radius of the drainage pipe;

[0053] The controller 10 is electrically connected to the first solenoid valve 111 , the second solenoid valve, the slag discharge valve 14 , the driving mechanism 3 , the water pump 92 and the dissolved gas releaser 7 .

[0054] In the first state, the first solenoid valve 111 is opened, the second solenoid valve 121 is closed, the slag discharge port 13 is closed, and the scraper plate 2 is against the inner wall of the flotation tank 1 in the opposite direction of the X direction;

[0055] In the second state, the first solenoid valve 111 is closed, the scraper plate 2 abuts against the upper edge of the overflow plate 5, and the slag discharge valve 14 and the second solenoid valve 121 are opened;

[0056] In the above embodiment, the controller 10 controls the first solenoid valve 111 to open, the second solenoid valve 121 to close, and the slag discharge valve 14 to close, so that the wastewater enters the flotation tank 1 through the water inlet pipe 11. When the water level of the wastewater is higher than the upper edge of the overflow plate 5 by a preset height, the water level sensor 6 controls the first solenoid valve 111 to close by transmitting a signal to the controller 10, and the controller 10 controls the dissolved air releaser 7 to open, so that the gas enters the second exhaust pipe through the first exhaust pipe 8, and is discharged into the flotation tank 1 through the exhaust hole 811 of the second exhaust pipe 81, so that the tiny bubbles discharged through the exhaust hole 811 combine with the suspended matter in the wastewater to form slag, which floats on the surface of the wastewater. The controller 10 controls the dissolved air releaser 7 to close, and then the controller 10 controls the driving mechanism 3 to drive the scraper plate 2 to move in the vertical direction and the X direction until the lower edge of the scraper plate 2 abuts against the upper edge of the overflow plate 5. The controller 10 controls The slag discharge valve 14 and the second solenoid valve 121 are opened, and the water pump 92 is turned on. The water pump 92 draws water into the flushing pipe 9, and the water outlet pipe 12 discharges the water, and the slag discharge port 13 discharges the water. Since the radius of the flushing pipe 9 is smaller than the radius of the drainage pipe, while the flushing pipe 9 flushes the filter plate 4, the water outlet pipe 12 and the slag discharge port 13 are also draining water, so that when the water level of the flotation tank 1 drops, part of the slag enters the slag discharge port 13 through the water flow on the filter plate 4, and the slag is discharged through the slag discharge port 13 until the water level drops below the filter plate 4. The remaining slag remains on the filter plate 4, which enables the flushing pipe 9 to continue to flush the filter plate 4, and flush the remaining slag on the filter plate 4 to the slag discharge port 13, completing the cleaning of the slag in the flotation tank 1. Compared with the prior art, by arranging the scraper plate 2, the overflow plate 5, the filter plate 4, the slag discharge port 13 and the flushing pipe 9, the cleaning effect of the slag in the flotation tank 1 is improved.

[0057] As an optional embodiment, the driving mechanism 3 includes a screw guide rail assembly 31, a slider 32 and a first cylinder 33. The screw guide rail assembly 31 is connected to the Y-direction side wall of the flotation tank 1, the axial direction of the screw guide rail assembly 31 is the X-direction, the slider 32 is slidably connected to the screw guide rail assembly 31, the cylinder body of the first cylinder 33 is connected to the slider 32, the axial direction of the cylinder body of the first cylinder 33 is the vertical direction, the first cylinder 33 is located above the flotation tank 1, and the scraper plate 2 is connected to the piston rod of the first cylinder 33.

[0058] In the above embodiment, the scraper plate 2 can stably move along the X direction by utilizing the screw guide rail assembly 31 and the slider 32, and then the lower edge of the scraper plate 2 is located below the upper edge of the overflow plate 5 by the extension and contraction of the first cylinder 33, so that the scraper plate 2 can scrape the scum on the wastewater surface onto the filter plate 4.

[0059] As an optional implementation, the second exhaust pipe 81 is perpendicular to the first exhaust pipe 8 .

[0060] In the above embodiment, the exhaust hole 811 of the second exhaust pipe 81 can evenly release tiny bubbles into the wastewater, thereby absorbing a large amount of suspended matter in the wastewater.

[0061] As an optional embodiment, the wastewater treatment flotation device also includes a slag collection box 101, which is connected to the slag discharge port 13. An opening 1011 is provided at the upper portion of the slag collection box 101. The shape of the slag discharge valve 14 matches the opening 1011. The slag discharge valve 14 moves in a vertical direction. A second cylinder 102 is provided on the side wall of the flotation tank 1. The axial direction of the cylinder body of the second cylinder 102 is in a vertical direction. The slag discharge valve 14 is connected to a piston rod of the second cylinder 102. The second cylinder 102 drives the slag discharge valve 14 to switch between a first state and a second state.

[0062] In the first state, the slag discharge valve 14 covers the slag discharge port 13 and the slag discharge valve 14 is closed;

[0063] In the second state, the slag discharge valve 14 is located above the slag discharge port 13 and the slag discharge valve 14 is open.

[0064] In the above embodiment, the scum flushed from the filter plate 4 by the flushing pipe 9 falls into the scum collecting box 101 for unified treatment.

[0065] As an optional implementation, in the second state, the lower edge of the scraper plate 2 is 2-3 cm lower than the upper edge of the overflow plate 5 .

[0066] In the above embodiment, if the lower edge of the scraper plate 2 is too far below the upper edge of the overflow plate 5, the contact area of ​​the lower edge of the scraper plate 2 immersed in water is large, and the resistance encountered by the scraper plate 2 moving along the X direction is large, thereby increasing the energy consumption of the screw guide rail assembly 31.

[0067] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A wastewater treatment flotation device, characterized in that: include: An air flotation tank, one side of the air flotation tank is provided with a water inlet pipe, and a first solenoid valve is provided on the water inlet pipe; a water outlet pipe is provided at the bottom of the side wall of the other side of the air flotation tank, and a second solenoid valve is provided on the water outlet pipe; a slag discharge port is provided on the Y-direction opposite side of the air flotation tank, and a slag discharge valve is provided at the slag discharge port; A scraper plate, the scraper plate is located above the flotation tank, and the scraper plate moves along the X direction and the vertical direction to connect the side wall of the flotation tank; A driving mechanism, the driving mechanism is used to drive the scraper plate to move along the X direction and the vertical direction; The filter plate is connected to the flotation tank in an inclined manner along the Y direction, the lower end of the filter plate is connected to the slag discharge port, and the upper end of the filter plate is connected to the inner wall of the flotation tank on the Y direction side; An overflow plate, the overflow plate is connected to the opposite side of the filter plate X; A water level sensor is disposed in the flotation tank and is used to receive a signal indicating that the water level of the wastewater is higher than the upper edge of the overflow plate; A dissolved air releaser, wherein a connecting pipe is provided on the dissolved air releaser; A first exhaust pipe, one end of which is connected to the connecting pipe, and the other end of which extends into the bottom of the flotation tank. The first exhaust pipe is provided with a plurality of second exhaust pipes arranged and distributed along the X direction, and the second exhaust pipe is provided with a plurality of exhaust holes arranged and distributed along the Y direction, and the axial direction of the exhaust hole is the vertical direction; A flushing pipe, one end of which is connected to the water pipe through a three-way joint, the three-way joint is located on the X-direction side of the second solenoid valve, a water pump is provided on the flushing pipe, the other end of the flushing pipe is located above the high end of the filter plate, and the radius of the flushing pipe is smaller than the radius of the drainage pipe; A controller, the controller is electrically connected to the first solenoid valve, the second solenoid valve, the slag discharge valve, the driving mechanism, the water pump and the dissolved air releaser; In the first state, the first solenoid valve is opened, the second solenoid valve is closed, the slag discharge port is closed, and the scraper plate is against the inner wall of the flotation tank in the opposite direction of the X direction; In the second state, the first solenoid valve is closed, the scraper plate is against the upper edge of the overflow plate, and the slag discharge valve and the second solenoid valve are opened.

2. The wastewater treatment flotation device according to claim 1, characterized in that: The driving mechanism includes a screw guide rail assembly, a slider and a first cylinder. The screw guide rail assembly is connected to the Y-direction side wall of the flotation tank. The axial direction of the screw guide rail assembly is the X-direction. The slider is slidably connected to the screw guide rail assembly. The cylinder body of the first cylinder is connected to the slider. The axial direction of the cylinder body of the first cylinder is the vertical direction. The first cylinder is located above the flotation tank, and the scraper plate is connected to the piston rod of the first cylinder.

3. The wastewater treatment flotation device according to claim 1, characterized in that: The second exhaust pipe is perpendicular to the first exhaust pipe.

4. The wastewater treatment flotation device according to claim 1, characterized in that: The wastewater treatment flotation device also includes a slag collection box, which is connected to the slag discharge port. An opening is provided at the top of the slag collection box. The shape of the slag discharge valve matches the opening. The slag discharge valve moves in a vertical direction. A second cylinder is provided on the side wall of the flotation tank. The axial direction of the cylinder body of the second cylinder is in a vertical direction. The slag discharge valve is connected to the piston rod of the second cylinder. The second cylinder drives the slag discharge valve to switch between a first state and a second state. In the first state, the slag discharge valve covers the slag discharge port and is closed; In the second state, the slag discharge valve is located above the slag discharge port and is open.

5. The wastewater treatment flotation device according to claim 1, characterized in that: In the second state, the lower edge of the scraper plate is 2-3 cm lower than the upper edge of the overflow plate.

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