Dissolved air flotation device

Abstract

The utility model relates to a dissolved air flotation device, which belongs to the technical field of industrial sewage treatment and comprises a base, a machine body fixed at the top of the base, a sewage treatment mechanism mounted at the top of the base and used for treating industrial oily sewage, and a sewage discharge component mounted at the top of the base and used for cleaning impurities deposited in the machine body, the sewage treatment mechanism comprises a gas dissolving assembly which is mounted at the top of the base and is used for providing gas-dissolved water, and a mixing assembly which is mounted in the machine body and is used for improving the reaction efficiency between the gas-dissolved water and the oily sewage. According to the dissolved air flotation device, oil-containing industrial sewage and air-dissolved water can be fully stirred, so that the contact area between the oil-containing industrial sewage and the air-dissolved water can be effectively increased, the effect of improving the air-dissolved air flotation treatment of the air-dissolved water on the oil-containing industrial sewage is achieved, the treatment efficiency of the oil-containing industrial sewage is improved, and the treatment cost of the oil-containing industrial sewage is reduced. And moreover, the dissolved air flotation device is not influenced by the discharge amount of oil-containing industrial sewage, and the practicability of the dissolved air flotation device is improved.

Description

Technical Field

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

[0002] Dissolved air flotation utilizes the different solubility of water under different pressures to generate microbubbles in water under pressurized or negative pressure conditions, replacing the traditional air-inducing equipment to draw air into the water. Therefore, a dissolved air flotation device is required.

[0003] According to a Chinese patent with authorized publication number CN213141465U, an oil skimming tank for oilfield wastewater treatment is disclosed. The oily wastewater is initially filtered through an oil removal plate, and gas is released through a dissolved air pipeline at the bottom of the tank body. The gas passes through the oil removal plate upward, and when passing through the oil removal plate, the gas carries the oil inside the oil removal plate and emerges upward to perform deep oil removal. In actual use, the above scheme performs preliminary filtration of the oily industrial wastewater through the oil removal plate. However, the discharge amount of oily industrial wastewater in industrial production is generally large, so the filtration efficiency of the oil removal plate is relatively limited, resulting in the failure to achieve the expected effect of dissolved air flotation treatment of the oily industrial wastewater, reducing the practicality of the existing oil skimming tank for oilfield wastewater treatment. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present application provides a dissolved air flotation device, which has the advantages of being able to effectively improve the efficiency of treating oily industrial wastewater, and solves the problem of low practicality of existing skimming tanks used for oilfield wastewater treatment.

[0005] In order to achieve the above-mentioned purpose of effectively improving the efficiency of treating oily industrial wastewater, the present application provides the following technical solutions: a dissolved air flotation device, comprising a base, a body fixed to the top of the base, a sewage treatment mechanism installed on the top of the base for treating industrial oily sewage, and a sewage discharge component installed on the top of the base for cleaning impurities deposited inside the body;

[0006] The sewage treatment mechanism includes an air dissolving component installed on the top of the base for providing dissolved air water, a mixing component installed inside the body for improving the reaction efficiency between dissolved air water and oily sewage, a water outlet pipe fixed on the left side of the body, a sewage pipe fixed on the left side of the body, and an oil outlet pipe fixed on the top of the body.

[0007] By adopting the above technical solution, the efficiency of treating oily industrial wastewater can be effectively improved.

[0008] Furthermore, the gas dissolving assembly includes a gas dissolving tank fixed on the top of the base, a delivery pipe fixed on the left side of the gas dissolving tank, a diversion pipe fixed on the left side of the delivery pipe, two buffer pipes fixed on the left side of the diversion pipe, and multiple drainage pipes fixed on the bottom of the buffer pipe.

[0009] By adopting the above technical solution, it is ensured that the dissolved air and water in the body can be increased.

[0010] Furthermore, the mixing assembly includes a fixed column fixed to the top wall of the machine body, a motor fixed to the bottom end of the fixed column, a stirring rod fixed to the output shaft of the motor, a plurality of stirring blades fixed to the outside of the stirring rod, a mounting plate rotatably connected to the bottom end of the stirring rod through a bearing, and two connecting columns respectively fixed to the left and right sides of the mounting plate.

[0011] By adopting the above technical solution, the reaction efficiency between dissolved air water and oily wastewater can be effectively improved.

[0012] Furthermore, the sewage discharge assembly includes a water pump fixed on the top of the base, a fixed pipe fixed to the water inlet end of the water pump, three sewage suction pipes fixed to the bottom of the fixed pipe, and a sewage discharge pipe fixed to the water outlet end of the water pump.

[0013] By adopting the above technical solution, impurities deposited inside the machine body are cleaned.

[0014] Furthermore, the right side of the fixing pipe penetrates the machine body and extends to the inside of the machine body and is fixed to the inner right side wall of the machine body.

[0015] By adopting the above technical solution, the fixed pipe can be effectively fixed.

[0016] Furthermore, the opposite ends of the two connecting columns are respectively fixed to the inner left wall and the inner right wall of the body, and four reinforcing ribs are fixed between the outer side of the motor and the outer side of the fixing column.

[0017] By adopting the above technical solution, it is ensured that the mounting plate is fixed by the connecting block and the connection between the motor and the fixing column is more stable.

[0018] Furthermore, two fixing blocks are fixed to the inner left side wall of the body, and the left side of the buffer tube penetrates the body and extends to the inside of the body and is fixedly connected to the fixing block.

[0019] By adopting the above technical solution, the buffer tube can be installed more stably through the fixing block.

[0020] Furthermore, the right sides of the water outlet pipe and the sewage inlet pipe both penetrate the machine body and extend to the interior of the machine body.

[0021] By adopting the above technical solution, it can be ensured that sewage is added into the body and the treated sewage is discharged from the body.

[0022] Compared with the prior art, the present invention provides a dissolved air flotation device, which has the following beneficial effects:

[0023] The dissolved air flotation device, through the coordinated use of a base, a body, a sewage treatment mechanism and a sewage discharge component, can fully stir the oily industrial sewage and dissolved air water, thereby effectively increasing the contact area between the oily industrial sewage and the dissolved air water, thereby achieving the effect of improving the dissolved air flotation treatment of the oily industrial sewage by the dissolved air water, improving the treatment efficiency of the oily industrial sewage, and is not affected by the discharge amount of the oily industrial sewage, thereby improving the practicability of the dissolved air flotation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of this application;

[0025] Figure 2 It is a partial enlarged schematic diagram of the A part in the structure of the utility model;

[0026] Figure 3 It is a three-dimensional schematic diagram of the mounting plate connection structure in the structure of the utility model.

[0027] In the figure: 1, base; 2, body; 200, sewage treatment mechanism; 201, dissolved air component; 2011, dissolved air tank; 2012, delivery pipe; 2013, diversion pipe; 2014, buffer pipe; 2015, drainage pipe; 202, mixing component; 2021, fixed column; 2022, motor; 2023, stirring rod; 2024, stirring blade; 2025, mounting plate; 2026, connecting column; 203, water outlet pipe; 204, sewage inlet pipe; 205, oil outlet pipe; 300, sewage discharge component; 301, water pump; 302, fixed pipe; 303, sewage extraction pipe; 304, sewage discharge pipe. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0029] See also Figure 1-3The utility model provides a technical solution: a dissolved air flotation device, comprising a base 1, a body 2 fixed to the top of the base 1, a sewage treatment mechanism 200 installed on the top of the base 1 for treating industrial oily sewage, and a sewage discharge component 300 installed on the top of the base 1 for cleaning impurities deposited inside the body 2;

[0030] Through the coordinated use of the base 1, the body 2, the sewage treatment mechanism 200 and the sewage discharge component 300, the oily industrial sewage and the dissolved air water can be fully stirred, thereby effectively increasing the contact area between the oily industrial sewage and the dissolved air water, thereby achieving the effect of improving the dissolved air flotation treatment of the oily industrial sewage by the dissolved air water, improving the treatment efficiency of the oily industrial sewage, and not being affected by the discharge amount of the oily industrial sewage, thereby improving the practicability of the dissolved air flotation device.

[0031] The sewage treatment structure 200 in this embodiment is a structure for treating industrial oily sewage.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, the sewage treatment mechanism 200 includes a dissolved air component 201 installed on the top of the base 1 for providing dissolved air water, a mixing component 202 installed inside the body 2 for improving the reaction efficiency between the dissolved air water and the oily sewage, a water outlet pipe 203 fixed to the left side of the body 2, a sewage inlet pipe 204 fixed to the left side of the body 2, and an oil outlet pipe 205 fixed to the top of the body 2.

[0033] It should be noted that the right sides of the water outlet pipe 203 and the sewage inlet pipe 204 both penetrate the body 2 and extend to the interior of the body 2 , which can ensure that sewage is added to the body 2 and the treated sewage is discharged from the body 2 .

[0034] In this embodiment, the dissolved air component 201 is a structure for providing dissolved air water.

[0035] like Figure 1 and Figure 2 As shown, the dissolved gas component 201 includes a dissolved gas tank 2011 fixed to the top of the base 1, a delivery pipe 2012 fixed to the left side of the dissolved gas tank 2011, a diversion pipe 2013 fixed to the left side of the delivery pipe 2012, two buffer pipes 2014 fixed to the left side of the diversion pipe 2013, and a plurality of drainage pipes 2015 fixed to the bottom of the buffer pipe 2014.

[0036] It should be noted that two fixing blocks are fixed to the inner left side wall of the body 2, and the left side of the buffer tube 2014 passes through the body 2 and extends to the inside of the body 2 and is fixedly connected to the fixing block, so that the buffer tube 2014 can be installed more stably through the fixing block.

[0037] In this embodiment, the mixing assembly 202 is a structure for effectively mixing dissolved air water and industrial oily wastewater.

[0038] like Figure 1 , Figure 2 and Figure 3 As shown, the mixing assembly 202 includes a fixed column 2021 fixed to the inner top wall of the body 2, a motor 2022 fixed to the bottom end of the fixed column 2021, a stirring rod 2023 fixed to the output shaft of the motor 2022, a plurality of stirring blades 2024 fixed to the outside of the stirring rod 2023, a mounting plate 2025 rotatably connected to the bottom end of the stirring rod 2023 through a bearing, and two connecting columns 2026 respectively fixed to the left and right sides of the mounting plate 2025.

[0039] It should be noted that the opposite ends of the two connecting columns 2026 are respectively fixed to the inner left wall and the inner right wall of the body 2 to ensure that the mounting plate 2025 is fixed by the connecting block 2026. Four reinforcing ribs are fixed between the outer side of the motor 2022 and the outer side of the fixing column 2021 to make the connection between the motor 2022 and the fixing column 2021 more stable.

[0040] In this embodiment, the sewage discharge component 300 is a structure for discharging impurities such as sludge accumulated in the machine body 2 .

[0041] like Figure 1 As shown, the sewage discharge assembly 300 includes a water pump 301 fixed on the top of the base 1, a fixed pipe 302 fixed to the water inlet end of the water pump 301, three sewage suction pipes 303 fixed to the bottom of the fixed pipe 302, and a sewage discharge pipe 304 fixed to the water outlet end of the water pump 301.

[0042] It should be noted that the right side of the fixed pipe 302 passes through the body 2 and extends to the inside of the body 2 and is fixed to the inner right wall of the body 2, ensuring that the fixed pipe 302 can be effectively fixed, so that the sewage extraction pipe 303 can effectively extract sludge and other impurities.

[0043] The working principle of the above embodiment is:

[0044] When in use, firstly, oily industrial sewage from oilfield chemical industry that needs dissolved air flotation treatment is added into the machine body 2 through the sewage inlet pipe 204. At the same time, the delivery pipe 2012, the diversion pipe 2013, the buffer pipe 2014 and the drainage pipe 2015 add the dissolved air water in the dissolved air pipe 211 into the machine body 2. The dissolved air water can promote the separation of oil and water in the oily industrial sewage. Then, the motor 2022 is turned on to drive the stirring rod 2023 and the stirring blade 2024 to rotate, so that the stirring blade 2024 The contact area between the oily industrial sewage and the dissolved air water is increased, thereby achieving a better oil removal effect on the oily industrial sewage and improving the oil removal efficiency. The separated oil can be extracted from the body 2 through the oil outlet pipe 205, and the treated sewage is discharged from the body 2 through the water outlet pipe 203. Then, the water pump 301 is turned on, and the sludge and other impurities accumulated on the inner bottom wall of the body 2 during the treatment process are discharged from the body 2 through the coordinated use of the sewage extraction pipe 303, the fixed pipe 302 and the sewage discharge pipe 304.

[0045] Compared with the prior art, the dissolved air flotation device, through the coordinated use of the base 1, the body 2, the sewage treatment mechanism 200 and the sewage discharge component 300, can fully stir the oily industrial sewage and the dissolved air water, thereby effectively increasing the contact area between the oily industrial sewage and the dissolved air water, thereby achieving the effect of improving the dissolved air flotation treatment of the oily industrial sewage by the dissolved air water, improving the treatment efficiency of the oily industrial sewage, and is not affected by the discharge amount of the oily industrial sewage, thereby improving the practicability of the dissolved air flotation device and solving the problem of low practicability of the existing skimming tank for oilfield sewage treatment.

[0046] The electrical components appearing in the text are all electrically connected to the controller and the power supply. The control method of the utility model is controlled by the controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of an external power supply is also common knowledge in this field. The utility model is mainly used to protect mechanical devices, so the utility model will no longer explain the control method and circuit connection in detail.

Claims

1. A dissolved air flotation device, characterized in that: It comprises a base (1), a body (2) fixed to the top of the base (1), a sewage treatment mechanism (200) installed on the top of the base (1) for treating industrial oily sewage, and a sewage discharge component (300) installed on the top of the base (1) for cleaning impurities deposited inside the body (2); The sewage treatment mechanism (200) comprises an air dissolving component (201) installed on the top of the base (1) for providing air-dissolving water, a mixing component (202) installed inside the body (2) for improving the reaction efficiency between the air-dissolving water and the oily sewage, a water outlet pipe (203) fixed to the left side of the body (2), a sewage inlet pipe (204) fixed to the left side of the body (2), and an oil outlet pipe (205) fixed to the top of the body (2).

2. The dissolved air flotation device according to claim 1, characterized in that: The gas dissolving component (201) comprises a gas dissolving tank (2011) fixed to the top of the base (1), a delivery pipe (212) fixed to the left side of the gas dissolving tank (2011), a diversion pipe (2013) fixed to the left side of the delivery pipe (2012), two buffer pipes (2014) fixed to the left side of the diversion pipe (2013), and a plurality of drainage pipes (2015) fixed to the bottom of the buffer pipe (2014).

3. The dissolved air flotation device according to claim 1, characterized in that: The mixing assembly (202) comprises a fixing column (2021) fixed to the inner top wall of the machine body (2), a motor (2022) fixed to the bottom end of the fixing column (2021), a stirring rod (2023) fixed to the output shaft of the motor (222), a plurality of stirring blades (2024) fixed to the outside of the stirring rod (2023), a mounting plate (2025) rotatably connected to the bottom end of the stirring rod (2023) via a bearing, and two connecting columns (2026) respectively fixed to the left and right sides of the mounting plate (2025).

4. The dissolved air flotation device according to claim 1, characterized in that: The sewage discharge assembly (300) comprises a water pump (301) fixed to the top of the base (1), a fixed pipe (302) fixed to the water inlet end of the water pump (301), three sewage extraction pipes (303) fixed to the bottom of the fixed pipe (302), and a sewage discharge pipe (304) fixed to the water outlet end of the water pump (301).

5. The dissolved air flotation device according to claim 4, characterized in that: The right side of the fixing tube (302) passes through the machine body (2) and extends into the interior of the machine body (2) and is fixed to the inner right side wall of the machine body (2).

6. The dissolved air flotation device according to claim 3, characterized in that: The opposite ends of the two connecting columns (2026) are respectively fixed to the inner left wall and the inner right wall of the machine body (2), and four reinforcing ribs are fixed between the outer side of the motor (2022) and the outer side of the fixing column (2021).

7. The dissolved air flotation device according to claim 2, characterized in that: Two fixing blocks are fixed to the inner left side wall of the machine body (2); the left side of the buffer tube (214) penetrates the machine body (2) and extends to the interior of the machine body (2) and is fixedly connected to the fixing block.

8. The dissolved air flotation device according to claim 1, characterized in that: The right sides of the water outlet pipe (203) and the sewage inlet pipe (204) both penetrate the machine body (2) and extend to the interior of the machine body (2).

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