Adjustable flotation equipment for treating oily sludge

Abstract

The utility model discloses adjustable flotation equipment for treating oily sludge, and belongs to the technical field of environmental protection equipment for treating oily sludge in the petrochemical industry, the adjustable flotation equipment comprises a main tank body, an air inflation mechanism and a scraper mechanism, the scraper mechanism comprises a scraper motor, an oil scraper, an oil-water interface liquid level machine, a floating oil overflow tank and a sliding rail, the sliding rail is fixed to the inner side wall of the main tank body, the scraper motor is connected into the sliding rail in a sliding mode, the oil scraper is fixed to the output end of the scraper motor, the oil-water interface liquid level machine is installed in the main tank body, and the liquid separation end of the oil-water interface liquid level machine is fixed to the scraper motor. The scraper motor is adjusted to an oil-water interface under the action of the oil-water interface liquid level meter, so that the oil scraper is positioned on the oil-water interface, the oil scraper rotates to quickly push an oil phase into the floating oil overflow tank, and the oil scraper can be adjusted along with the change of the floating oil quantity of the oily sludge, so that the oil-water separation is more accurate.

Description

Technical Field

[0001] This application relates to the technical field of environmental protection equipment for treating oily sludge in the petrochemical industry, and in particular discloses an adjustable flotation device for treating oily sludge. Background Art

[0002] With the continuous development of industry, the demand for oil is increasing, so the amount of oil production sewage is also increasing. If the oil production sewage containing a certain amount of oil is directly discharged, it will not only have an adverse impact on the environment, but also cause waste of resources. Therefore, it is necessary to separate and recover the oil in the oil production sewage, and the flotation device is one of the separation and recovery devices.

[0003] The existing flotation device includes a main tank body, an air inflation mechanism and a scraping mechanism. The scraping mechanism includes a motor and an oil scraping plate. The oily sludge and the medicament are placed in the main tank body, and at the same time, gas is introduced into the main tank body through the air inflation mechanism. Under the action of the gas, the oily sludge is separated into an oil phase, a water phase and a solid phase by the medicament. Among them, the oil phase floats to the upper part, the solid phase settles to the lower part, and the water phase stays in the middle. The motor drives the oil scraping plate to rotate to achieve oil-water separation.

[0004] In view of the above-mentioned existing technology, the inventor finds that the scraping mechanism of the existing flotation device cannot be adjusted according to the change of the floating oil amount of the oily sludge, so accurate oil-water separation cannot be achieved. Utility Model Content

[0005] In order to make the oil-water separation more accurate, this application provides an adjustable flotation device for treating oily sludge.

[0006] An adjustable flotation device for treating oily sludge provided by this application adopts the following technical solutions:

[0007] An adjustable flotation device for treating oily sludge includes a main tank body, an air inflation mechanism and a scraping mechanism. The scraping mechanism includes a scraping motor, an oil scraping plate, an oil-water interface level gauge, a floating oil overflow tank and a slide rail. The slide rail is fixed on the inner side wall of the main tank body. The scraping motor is slidably connected in the slide rail. The oil scraping plate is fixed to the output end of the scraping motor. The oil-water interface level gauge is installed in the main tank body, and the liquid separation end of the oil-water interface level gauge is fixed to the scraping motor.

[0008] By adopting the above technical solutions, the scraping motor is adjusted to the oil-water interface under the action of the oil-water interface level gauge, so that the oil scraping plate is located at the oil-water interface. The rotation of the oil scraping plate can quickly push the oil phase into the floating oil overflow tank. Since the oil scraping plate can be adjusted according to the change of the floating oil amount of the oily sludge, the oil-water separation is made more accurate.

[0009] Optionally, the scraping motor is set as a waterproof variable-frequency motor.

[0010] By adopting the above technical solutions, the waterproof motor can endow the scraper motor with good waterproof performance, facilitating its use inside the main tank body. The variable-frequency motor can change the rotation speed of the shaft of the scraper motor, enabling the oil scraping plate to change its rotation speed according to the change in the floating oil amount of the oily sludge, which is conducive to oil-water separation.

[0011] Optionally, a plurality of fluid partition plates are fixed inside the main tank body, and the fluid partition plates and the inner wall of the main tank body form a plurality of unit separation chambers.

[0012] By adopting the above technical solutions, the main tank body is separated into a plurality of unit separation chambers, facilitating multi-stage separation of oil and water.

[0013] Optionally, a raw material overflow pipe connecting two unit separation chambers is provided on the fluid partition plate.

[0014] By adopting the above technical solutions, the raw materials that are not separated in the left chamber can flow into the right chamber through the raw material overflow pipe, facilitating multi-stage separation of oil and water.

[0015] Optionally, the gas charging mechanism includes an air compressor, a main gas transmission pipe, gas transmission branch pipes, an air inlet valve, a variable-frequency dissolved gas motor, and an impeller. The air compressor is located outside the main tank body. The main gas transmission pipe is connected to the air outlet of the air compressor. The number of gas transmission branch pipes is the same as the number of unit separation chambers, and the gas transmission branch pipes are connected to the air outlet end of the main gas transmission pipe. The air inlet valve is installed on the gas transmission branch pipe. The variable-frequency dissolved gas motor is fixed on the main tank body. The impeller is fixed at the bottom of the output end of the variable-frequency dissolved gas motor. An air transmission pipe is fixed inside the unit separation chamber. The air transmission pipe is connected to the gas transmission branch pipe and is sleeved outside the output end of the variable-frequency dissolved gas motor.

[0016] By adopting the above technical solutions, setting the same number of gas transmission branch pipes, air inlet valves, variable-frequency dissolved gas motors, and impellers as the number of unit separation chambers can fill each unit separation chamber with gas, facilitating multi-stage separation of oil and water.

[0017] Optionally, a solid-phase discharge branch pipe is connected to the bottom of each unit separation chamber. The discharge ends of a plurality of solid-phase discharge branch pipes are connected to a solid-phase discharge main pipe. A solid-phase branch outlet valve is installed on the solid-phase discharge branch pipe, and a solid-phase main outlet valve is installed on the solid-phase discharge main pipe.

[0018] By adopting the above technical solutions, the solid phase at the bottom of each separation chamber can flow into the solid-phase discharge branch pipe, then flow to the solid-phase main pipe, and further be discharged from the main tank body, facilitating the discharge of the solid phase.

[0019] Optionally, a feed pipe is connected to the main tank body, an oily sludge inlet valve is connected to the feed pipe, a chemical inlet pipe is connected to the main tank body, a chemical inlet valve is connected to the chemical inlet pipe, a water inlet pipe is provided on the main tank body, and a circulating separated water inlet valve is installed on the water inlet pipe.

[0020] By adopting the above technical solution, it is convenient for oily sludge, chemicals, and separated water to enter the main tank body, so as to perform flotation on the oily sludge.

[0021] Optionally, an oil outlet pipe is connected to the bottom of the floating oil overflow tank, and a floating oil outlet valve is installed on the oil outlet pipe.

[0022] By adopting the above technical solution, the oil phase entering the floating oil overflow tank can be discharged from the oil outlet pipe, which is convenient for the collection of the oil phase.

[0023] Optionally, a water outlet pipe is connected to the bottom of the main tank body, and a water phase outlet valve is installed on the water outlet pipe.

[0024] By adopting the above technical solution, the water phase in the main tank body can be discharged from the water outlet pipe, which is convenient for the discharge of the water phase.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The scraper motor is adjusted to the oil-water interface under the action of the oil-water interface level gauge, so that the oil scraping plate is located at the oil-water interface. The rotation of the oil scraping plate can quickly push the oil phase into the floating oil overflow tank. Since the oil scraping plate can be adjusted according to the change of the floating oil amount of the oily sludge, the oil-water separation is more accurate;

[0027] 2. The waterproof motor can make the scraper motor have good waterproof performance, which is convenient for use inside the main tank body. The frequency conversion motor can change the rotation speed of the rotating shaft of the scraper motor, so that the oil scraping plate can change the rotation speed according to the change of the floating oil amount of the oily sludge, which is convenient for oil-water separation;

[0028] 3. By setting the same number of gas transmission branch pipes, air inlet valves, frequency conversion dissolved air motors, and impellers as the number of unit separation chambers, gas can be filled into each unit separation chamber, which is convenient for multi-stage separation of oil and water. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0030] Description of reference numerals: 1. Air compressor; 2. Air inlet valve; 3. Variable-frequency dissolved air motor; 4. Impeller; 5. Fluid partition; 6. Raw material overflow pipe; 7. Oil-containing sludge inlet valve; 8. Circulating separated water inlet valve; 9. Total solid phase outlet valve; 10. Solid phase sub-outlet valve; 11. Floating oil outlet valve; 12. Aqueous phase outlet valve; 13. Chemical agent inlet valve; 14. Scraper motor; 15. Oil scraping plate; 16. Oil-water interface level gauge; 17. Floating oil overflow tank; 18. Slide rail. Detailed implementation manners

[0031] The following further elaborates on this application in conjunction with the Figure 1 accompanying drawings.

[0032] An embodiment of this application discloses an adjustable flotation device for treating oil-containing sludge. Referring to Figure 1 , an adjustable flotation device for treating oil-containing sludge includes a main tank body, an air inflation mechanism, a scraper mechanism, a fluid partition 5, and a raw material overflow pipe 6. A plurality of fluid partitions 5 are provided. The fluid partition 5 is used to partition the main tank body so that a unit separation chamber is formed between the inner wall of the main tank body and the fluid partition 5. The number of raw material overflow pipes 6 is the same as the number of fluid partitions 5. The raw material overflow pipe 6 is located at the fluid partition 5, and the raw material overflow pipe 6 communicates with two adjacent unit separation chambers. So that the raw materials separated in the left unit separation chamber can enter the right unit separation chamber, thereby realizing multi-stage separation of the raw materials and improving the separation effect of the raw materials.

[0033] Referring to Figure 1 , the air inflation mechanism includes an air compressor 1, an air delivery main pipe, air delivery branch pipes, an air inlet valve 2, a variable-frequency dissolved air motor 3, and an impeller 4. The air compressor 1 is located outside the main tank body. The air delivery main pipe is fixedly connected to the air outlet of the air compressor 1. The number of air delivery branch pipes is the same as the number of unit separation chambers, and the air delivery branch pipes are connected to the air outlet end of the air delivery main pipe. The air inlet valve 2 is installed on the air delivery branch pipe. The variable-frequency dissolved air motor 3 is fixed on the main tank body. The impeller 4 is fixed at the bottom of the output end of the variable-frequency dissolved air motor 3. An air delivery pipe is fixed in the unit separation chamber. The air delivery pipe is connected to the air delivery branch pipe, and the air delivery pipe is sleeved outside the output end of the variable-frequency dissolved air motor 3. The gas in the air compressor 1 enters the air delivery branch pipes through the air delivery main pipe, and the gas in the air delivery branch pipes enters each unit separation chamber through the air delivery pipe, facilitating the entry of gas into the main tank body. At the same time, the variable-frequency dissolved air motor 3 can drive the impeller 4 to rotate, and the cutting action generated by the impeller 4 generates sufficient impact power to help form tiny bubbles, increasing the contact area between the gas and the raw materials and facilitating rapid flotation.

[0034] Referring to Figure 1, the scraper mechanism includes a scraper motor 14, an oil scraping plate 15, an oil-water interface level gauge 16, a floating oil overflow tank 17, and a slide rail 18. The slide rail 18 is fixedly installed on the inner side wall of the main tank. The oil-water interface level gauge 16 is installed inside the main tank. The scraper motor 14 is slidably connected inside the slide rail 18, and the scraper motor 14 is fixedly connected to the liquid separation end of the oil-water interface level gauge 16. The oil scraping plate 15 is fixed to the output end of the scraper motor 14. An overflow port is provided at the upper part of the side wall of the main tank, and the floating oil overflow tank 17 is fixedly installed below the overflow port of the main tank. The scraper motor 14 is adjusted to the oil-water interface under the action of the oil-water interface level gauge, so that the oil scraping plate 15 is located at the oil-water interface. The rotation of the oil scraping plate 15 can quickly push the oil phase into the floating oil overflow tank 17. Since the oil scraping plate 15 can be adjusted according to the change of the floating oil amount of the oily sludge, the oil-water separation is more accurate. The scraper motor 14 adopts a waterproof variable-frequency motor. The scraper motor 14 has the performance of waterproof and frequency conversion, so that the scraper motor 14 can be installed inside the main tank and the scraper motor 14 changes the speed, which is convenient for the use of the scraper motor 14.

[0035] Refer to Figure 1 , a feed pipe for transporting oily sludge is installed at the top left of the main tank, and an oily sludge inlet valve 7 is installed on the feed pipe. A chemical feed pipe for transporting chemicals is installed at the top left of the main tank, and a chemical inlet valve 13 is installed on the chemical feed pipe. A water inlet pipe for transporting separated water is installed at the top left of the main tank, and a circulating separated water inlet valve 8 is installed on the water inlet pipe. It can make the oily sludge, chemicals, and separated water enter the main tank. At the same time, the oily sludge inlet valve 7, the chemical inlet valve 13, and the circulating separated water inlet valve 8 can control the transportation amounts of the oily sludge, chemicals, and separated water, which is convenient for the flotation of the oily sludge.

[0036] Refer to Figure 1 , an oil outlet pipe for discharging the oil phase is fixedly connected to the bottom of the floating oil overflow tank 17, and a floating oil outlet valve 11 is installed on the oil outlet pipe. A water outlet pipe for discharging the water phase is fixedly connected to the bottom right of the main tank, and a water phase outlet valve 12 is installed on the water outlet pipe. A solid-phase discharge branch pipe for discharging the solid phase is fixedly connected to the bottom of each unit separation chamber. A solid-phase separation outlet valve 10 is installed on each solid-phase discharge branch pipe. The discharge ends of multiple solid-phase discharge branch pipes are fixedly connected to a solid-phase discharge main pipe. A solid-phase total outlet valve 9 is installed on the solid-phase discharge main pipe. It can discharge the flotation-treated oil phase, water phase, and solid phase from the main tank, which is convenient for the collection of the oil phase, water phase, and solid phase.

[0037] The implementation principle of an adjustable flotation device for treating oily sludge in an embodiment of the present application is as follows: Open the air inlet valve 2, the oily sludge inlet valve 7, the reagent inlet valve 13, and the circulating separation water inlet valve 8, so that air, oily sludge, reagent, and separation water enter each unit separation chamber in the main tank body. Start the variable-frequency dissolved air motor 3 to drive the impeller 4 to rotate. The cutting action generated by the impeller 4 generates sufficient impact power to help form tiny bubbles. Under the action of air, reagent, and separation water, the oily sludge forms a solid phase, an aqueous phase, and an oil phase. The oil phase enters the floating oil overflow tank 17 under the action of the oil scraping plate 15 and is discharged through the oil outlet pipe; the aqueous phase is discharged through the water outlet pipe; and the solid phase is discharged through the solid-phase discharge branch pipe and the solid-phase discharge main pipe.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An adjustable flotation device for treating oily sludge, characterized in that: It includes a main tank body, an air inflation mechanism, and a scraping mechanism. The scraping mechanism includes a scraping motor (14), an oil scraping plate (15), an oil-water interface level machine (16), a floating oil overflow tank (17), and a slide rail (18). The slide rail (18) is fixed on the inner side wall of the main tank body. The scraping motor (14) is slidably connected in the slide rail (18). The oil scraping plate (15) is fixed to the output end of the scraping motor (14). The oil-water interface level machine (16) is installed in the main tank body, and the liquid separation end of the oil-water interface level machine (16) is fixed to the scraping motor (14).

2. The adjustable flotation equipment for treating oily sludge according to claim 1, wherein: The scraping motor (14) is set as a waterproof variable-frequency motor.

3. An adjustable flotation device for treating oily sludge according to claim 1, characterized in that: A plurality of fluid partition plates (5) are fixed in the main tank body. The fluid partition plates (5) and the inner wall of the main tank body form a plurality of unit separation chambers.

4. An adjustable flotation device for treating oily sludge according to claim 3, characterized in that: A raw material overflow pipe (6) connecting two unit separation chambers is provided on the fluid partition plate (5).

5. An adjustable flotation device for treating oily sludge according to claim 3, characterized in that: The air inflation mechanism includes an air compressor (1), an air delivery main pipe, air delivery branch pipes, an air inlet valve (2), a variable-frequency dissolved air motor (3), and an impeller (4). The air compressor (1) is located outside the main tank body. The air delivery main pipe is connected to the air outlet of the air compressor (1). The number of air delivery branch pipes is the same as the number of unit separation chambers, and the air delivery branch pipes are connected to the air outlet end of the air delivery main pipe. The air inlet valve (2) is installed on the air delivery branch pipes. The variable-frequency dissolved air motor (3) is fixed on the main tank body. The impeller (4) is fixed to the bottom of the output end of the variable-frequency dissolved air motor (3). An air delivery pipe is fixed in the unit separation chamber. The air delivery pipe is connected to the air delivery branch pipe, and the air delivery pipe is sleeved outside the output end of the variable-frequency dissolved air motor (3).

6. An adjustable flotation device for treating oily sludge according to claim 3, characterized in that: A solid-phase discharge branch pipe is connected to the bottom of each unit separation chamber. The discharge ends of a plurality of solid-phase discharge branch pipes are connected to a solid-phase discharge main pipe. A solid-phase sub-outlet valve (10) is installed on the solid-phase discharge branch pipe, and a solid-phase total outlet valve (9) is installed on the solid-phase discharge main pipe.

7. An adjustable flotation device for treating oily sludge according to claim 1, characterized in that: A feed pipe is connected to the main tank body. An oily sludge inlet valve (7) is connected to the feed pipe. A chemical feed pipe is connected to the main tank body. A chemical agent inlet valve (13) is connected to the chemical feed pipe. A water inlet pipe is provided on the main tank body. A circulating separation water inlet valve (8) is installed on the water inlet pipe.

8. The adjustable flotation equipment for treating oily sludge according to claim 1, wherein: An oil outlet pipe is connected to the bottom of the floating oil overflow tank (17). A floating oil outlet valve (11) is installed on the oil outlet pipe.

9. The adjustable flotation equipment for treating oily sludge according to claim 1, wherein: A water outlet pipe is connected to the bottom of the main tank body. A water phase outlet valve (12) is installed on the water outlet pipe.

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