High efficiency oil-water separation device

Abstract

The application discloses a kind of high-efficiency oil-water separation equipment, it is related to wastewater treatment, and its technical solution main points are: including tank, tank is equipped with air flotation zone and scraper, air flotation zone is equipped with aeration air flotation component, aeration air flotation component includes the driving member driven by the reaction force of aeration, transmission assembly is achieved between scraper and driving member transmission.This application generates small bubbles by dispersing air through micro-porous structure through aeration air flotation component, when air is input into sewage, air flow will generate reaction force, use this reaction force to drive driving member movement, and make driving member move scraper by transmission assembly, so that it can use the force generated during the working process of aeration air flotation component to drive scraper to scrape oil, without additional driving power source for scraper movement, more power saving, more efficient.

Description

Technical Field

[0001] This invention relates to wastewater treatment, and more specifically, to a high-efficiency oil-water separation device. Background Technology

[0002] An oil-water separator is a device that comes in two types: catering oil-water separators and industrial oil-water separators. Catering oil-water separators are used by the catering industry to treat wastewater.

[0003] Chinese Patent No. CN201525784U discloses an automatic oil-water separator for catering wastewater using an air flotation system. Its key technical features include: a slag removal zone, an air flotation zone, an oil-water separation zone, and an effluent zone. The slag removal zone is equipped with a filter basket to filter and retain food residue. The air flotation zone is equipped with a mechanical air flotation generator head. The oil removal zone is equipped with an automatic oil skimmer, which collects floating oil into an oil collection tank, from which it flows into an oil collection bucket. The effluent zone is equipped with a three-way pipe, through which wastewater is diverted before exiting the water flow.

[0004] The above solution improves oil-water separation efficiency and solves technical problems such as the inconvenience of manually cleaning grease and scum. However, automatic oil skimming devices often require motor drive, which results in high power consumption. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a high-efficiency oil-water separation device.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a high-efficiency oil-water separation device, including a tank, wherein the tank is provided with an air flotation zone and a scraper, the air flotation zone is provided with an aeration air flotation component, the aeration air flotation component includes a driving component driven by the reaction force of aeration, and the scraper and the driving component are transmitted through a transmission component.

[0007] The present invention is further configured such that: the aerated flotation assembly further includes a gas source; the driving component is a hollow impeller located at the lower part of the flotation zone; the hollow impeller includes a plurality of jet blades; a microporous diffuser plate is provided on the outer side of the jet blades; the gas source provides gas to the jet blades; and the jet blades spray gas outward through the microporous diffuser plate to achieve rotation of the hollow impeller.

[0008] The present invention is further configured such that: a rotating shaft is rotatably connected to the trough, the scraper is fixedly connected to the rotating shaft, the transmission assembly is a pulley assembly, and the rotating shaft and the hollow impeller are driven by the pulley assembly.

[0009] The present invention is further configured such that: the pulley assembly includes a driving pulley and a driven pulley respectively connected to the hollow impeller and the rotating shaft, wherein the diameter of the driving pulley is smaller than the diameter of the driven pulley.

[0010] The present invention is further configured such that: the tank body is provided with a water outlet area, the tank body is provided with a flow stabilizing plate located between the water outlet area and the air flotation area, the bottom surface of the flow stabilizing plate is fixed to the bottom of the tank body and the two sides are fixed to the inner sidewall of the tank body, and the upper end of the flow stabilizing plate is higher than the upper end of the hollow impeller.

[0011] The invention is further configured such that: the hollow impeller also includes a hollow rotating core, and the hollow rotating core is provided with microporous diffuser strips arranged along its length and located between two jet blades.

[0012] The present invention is further configured such that the longitudinal section of the jet blade is arc-shaped, and the arc-shaped convex surface of the jet blade is oriented toward the rotation direction of the hollow impeller.

[0013] The present invention is further configured such that the jet direction of the jet blade is tangent to the circle formed by the outer side of the jet blade rotating.

[0014] In summary, the present invention has the following beneficial effects: the aeration flotation component disperses air through a microporous structure to generate tiny bubbles. When the air is introduced into the wastewater, the airflow generates a reaction force, which drives the drive component to move. The drive component then drives the scraper to move through the transmission component. Thus, the scraper can be driven by the force naturally generated during the operation of the aeration flotation component, eliminating the need for an external power source to drive the scraper, making it more energy-efficient and more effective. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the present invention;

[0016] Figure 2 for Figure 1 Enlarged diagram of section A in the middle;

[0017] Figure 3 for Figure 1 Enlarged diagram of section B in the middle;

[0018] Figure 4 This is a schematic diagram of the structure of the present invention.

[0019] In the diagram: 1. Tank; 2. Flotation zone; 3. Scraper; 4. Drive unit; 5. Jet blade; 6. Microporous diffuser plate; 7. Rotating shaft; 8. Driving pulley; 9. Driven pulley; 10. Water outlet zone; 11. Flow stabilizer plate; 12. Hollow rotating core; 13. Microporous diffuser strip; 14. Water inlet; 15. Water outlet; 16. Slag removal zone; 17. Oil-water separation zone; 18. Settling tank; 19. Lower baffle; 20. Oil collection tank; 21. Upper baffle; 22. Cleaning port; 23. Air outlet pipe; 24. Drive belt; 25. Filter basket; 26. Gas source. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Example:

[0022] A high-efficiency oil-water separation device, such as Figure 1 and Figure 4 As shown, the system includes a tank 1, with an inlet 14 and an outlet 15 at each end. A cleaning port 22 is located at the bottom of the tank 1. Inside the tank 1 are a slag removal zone 16, an oil-water separation zone 17, an air flotation zone 2, and an outlet zone 10. A filter basket 25 is placed in the slag removal zone 16 below the inlet 14. A settling trough 18 is formed between the bottom of the filter basket 25 and the bottom surface of the slag removal zone 16. The lower part of the oil-water separation zone 17 and the lower part of the air flotation zone 2 are separated by a lower partition 19. An oil collection trough 20 is located above the air flotation zone 2. Outside the tank 1... An oil drain port connected to the oil collection tank 20 is provided. Above the flotation zone 2, a scraper 3 is provided to scrape the grease on the surface of the wastewater toward the oil collection tank 20. An aeration flotation component is located below the scraper 3 inside the flotation zone 2. The upper part of the flotation zone 2 and the upper part of the effluent zone 10 are separated by an upper partition 21. The drain port 15 is connected to the effluent zone 10. When separating catering wastewater by a high-efficiency oil-water separation device, the catering wastewater is discharged into the tank 1 from the inlet 14, and impurities are filtered through the filter basket 25. Impurities can be removed by lifting the filter basket 25. Tiny particles of wastewater can settle in the settling tank 18. After being discharged through the cleaning port 22 of the tank body 1, the settling tank 18 can be cleaned by lifting the filter basket 25. In the oil-water separation zone 17, because the surface tension of oil is greater than that of water, an oil film will form on the water surface. The lower baffle 19 separates the oil-water separation zone 17 from the flotation zone 2, allowing the oil film and some water to enter the flotation zone 2 from above the lower baffle 19. The scraper 3 above the flotation zone 2 scrapes the oil film into the oil collection tank 20, and the oil can be discharged into the oil collection tank 20 through the oil drain port of the tank body 1. While the water contains oil, tiny oil droplets with a specific gravity close to that of water also exist. The aeration flotation component can generate tiny bubbles, and several tiny bubbles adhere to the surface of the oil in the water, forming a suspension with an overall density of less than one. The buoyancy causes the suspension to rise to the water surface, thus separating the solid and liquid. The solids can then be scraped into the oil collection tank 20 by the scraper 3, improving the oil-water separation efficiency of the oil-water separation equipment. The flotation zone 2 and the outlet zone 10 are connected by the upper partition 21, allowing the clean water from the lower layer to enter the outlet zone 10 from below the upper partition 21 and be discharged, completing the oil-water separation.

[0023] like Figure 2 and Figure 3As shown, the aerated flotation assembly includes a gas source 26 and a drive component 4 driven by the reaction force of aeration. The scraper 3 and the drive component 4 are connected by a transmission assembly. Specifically, the drive component 4 is a hollow impeller located at the lower part of the flotation zone 2. The hollow impeller includes a hollow rotating core 12 and several jet blades 5. The hollow rotating core 12 and the several jet blades 5 are integrally formed and interconnected. A microporous diffuser plate 6 is provided on the outer side of the jet blades 5. The gas source 26 is a high-speed vortex fan. An air outlet pipe 23 is welded to the high-speed vortex fan. The air outlet pipe 23 is connected to the hollow rotating core 12 and rotates coaxially. Next, gas source 26 supplies gas to jet blade 5, and jet blade 5 sprays gas outward through microporous diffuser plate 6 to achieve rotation of hollow impeller. Rotating shaft 7 is rotatably connected to tank 1, scraper 3 is welded to rotating shaft 7, and transmission assembly is pulley assembly. Rotating shaft 7 and hollow impeller are driven by pulley assembly. Pulley assembly includes transmission belt 24 and driving pulley 8 and driven pulley 9 respectively connecting hollow impeller and rotating shaft 7. Driving pulley 8 is keyed to hollow rotating core 12, and driven pulley 9 is keyed to rotating shaft 7. Driving pulley 8 and driven pulley 9 are connected by transmission belt 24 to achieve synchronous rotation. 26 is a high-speed vortex fan that can input air from the outlet pipe 23 into the hollow rotating core 12. The hollow rotating core 12 and several jet blades 5 are interconnected, allowing the gas to be ejected outward through the microporous diffuser plate 6 on the outer side of the jet blades 5. The microporous diffuser plate 6 can cut the air, allowing the air to enter the water in the form of tiny bubbles from the surface of the microporous diffuser plate 6, causing tiny oil droplets to adhere to it and float to the surface. At the same time, the reaction force of the jet can drive the hollow impeller to rotate, thereby driving the drive pulley 8, which is keyed to the hollow rotating core 12, to rotate. The drive pulley 8 drives the water through the transmission belt 24. The driven pulley 9 rotates, thereby driving the rotating shaft 7 to rotate and causing the scraper 3 connected to the rotating shaft 7 to perform a circular motion to scrape the oil film into the oil collection tank 20. Therefore, the aeration flotation component disperses air through the microporous structure to generate tiny bubbles. When the air is input into the sewage, the airflow will generate a reaction force. This reaction force is used to drive the drive component 4 to move, and the drive component 4 drives the scraper 3 to move through the transmission component. Thus, the scraper 3 can be driven to scrape oil by the force naturally generated during the operation of the aeration flotation component, without the need for an external power source to drive the scraper 3 to move, which is more energy-saving and more efficient.

[0024] Furthermore, such as Figure 1 and Figure 2As shown, the jet direction of the jet blade 5 is tangent to the circle formed by the rotation of the outer side of the jet blade 5, and the longitudinal section of the jet blade 5 is arc-shaped. The arc-shaped convex surface of the jet blade 5 is set towards the rotation direction of the hollow impeller. The arc-shaped backward-curved jet blade 5 can reduce resistance, reduce the impact of the sewage jet blade 5 during startup, and reduce the load on the jet blade 5. By making the jet direction of the jet blade 5 tangent to the circle formed by the rotation of the outer side of the jet blade 5, the ejected gas can efficiently drive the hollow impeller to rotate, and obtain a large force to drive the scraper 3 to move.

[0025] Furthermore, such as Figure 4 As shown, the diameter of the driving pulley 8 is smaller than the diameter of the driven pulley 9. The driving pulley 8 needs to make more than one circular motion to drive the driven pulley 9 to make one circular motion, which can reduce the rotation speed of the scraper 3, avoid damaging the oil film, and facilitate the collection of grease.

[0026] like Figure 1 As shown, a flow stabilizing plate 11 is welded inside the tank body 1, located between the water outlet zone 10 and the air flotation zone 2. The bottom surface of the flow stabilizing plate 11 is welded to the bottom of the tank body 1, and both sides are welded to the inner sidewall of the tank body 1. The upper end of the flow stabilizing plate 11 is higher than the upper end of the hollow impeller. The flow stabilizing plate 11 can block the turbulence formed by the rotation of the hollow impeller, reduce the water flow velocity between the air flotation zone 2 and the water outlet zone 10, and facilitate the aeration air flotation component to thoroughly clean the tiny oil droplets in the air flotation zone 2 in the water before discharging the clean water into the water outlet zone 10.

[0027] like Figure 3 As shown, a microporous diffuser strip 13 is installed on the hollow impeller 12 along its length and located between the two jet blades 5. The microporous diffuser strip 13 can also generate microbubbles. As the hollow impeller rotates, the microbubbles can pass over the water-facing side of the jet blades 5, thereby cleaning the micro oil droplets attached to the surface of the jet blades 5, improving the efficiency of oil-water separation, preventing the hollow impeller from odor, reducing corrosion on the surface of the hollow impeller, and improving its service life.

[0028] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A high-efficiency oil-water separation device, comprising a tank body (1), wherein a gas flotation zone (2) and a scraper (3) are arranged in the tank body (1), characterized in that: The air flotation zone (2) is provided with an aeration air flotation assembly, the aeration air flotation assembly comprises a driving member (4) driven by the reaction force of aeration, the scraper (3) and the driving member (4) are driven by a transmission assembly, the aeration air flotation assembly further comprises a gas source (26), the driving member (4) is a hollow impeller located at the lower part of the air flotation zone (2), the hollow impeller comprises a plurality of air injection blades (5), the outer side of the air injection blade (5) is provided with a microporous diffusion plate (6), the gas source (26) provides gas to the air injection blade (5), and the air injection blade (5) rotates by spraying gas outward through the microporous diffusion plate (6), the groove body (1) is rotatably connected with a rotating shaft (7), the scraper (3) is fixedly connected to the rotating shaft (7), the transmission assembly is a belt wheel assembly, the rotating shaft (7) and the hollow impeller are driven by the belt wheel assembly, and the hollow impeller further comprises a hollow rotating core (12), the hollow rotating core (12) is provided with a microporous diffusion strip (13) arranged along the length direction and located between two air injection blades (5).

2. The high efficiency oil-water separation device of claim 1, wherein: The belt wheel assembly comprises a driving belt wheel (8) and a driven belt wheel (9) connected to the hollow impeller and the rotating shaft (7) respectively, and the diameter of the driving belt wheel (8) is smaller than that of the driven belt wheel (9).

3. The high efficiency oil-water separation device of claim 1, wherein: The groove body (1) is provided with a water outlet area (10), the groove body (1) is provided with a flow stabilizing plate (11) located between the water outlet area (10) and the air flotation zone (2), the bottom surface of the flow stabilizing plate (11) is fixed to the groove bottom of the groove body (1), the two sides are fixed to the inner side walls of the groove body (1), and the upper end of the flow stabilizing plate (11) is higher than the upper end of the hollow impeller.

4. The high efficiency oil-water separation device of claim 1, wherein: The longitudinal section of the air injection blade (5) is arranged in an arc shape, and the arc convex surface of the air injection blade (5) is arranged in the direction of rotation of the hollow impeller.

5. The high efficiency oil-water separation device of claim 1, wherein: The air injection direction of the air injection blade (5) is tangent to the circle formed by the rotation of the outer side of the air injection blade (5).

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