Novel oil-water separation device

Abstract

The utility model discloses a novel oil-water separation device, which belongs to the technical field of oil-water separators and comprises a box body, a partition plate, an oil collection separation structure and an oil liquid transfer structure are arranged in the box body, the partition plate is vertically arranged at the bottom of the box body to divide an inner cavity of the box body into a gravity separation chamber and an oil collection separation chamber, and the oil liquid transfer structure is arranged in the gravity separation chamber. A plurality of communicating pipes are arranged at the bottom of the partition plate, and an interval space for transferring oil liquid exists between the top of the partition plate and the box body; the oil collecting and separating structure is arranged in the oil collecting and separating chamber and comprises a plurality of oil collecting plates which are horizontally arranged; and the oil liquid transfer structure is arranged corresponding to the interval space and is used for transferring floating oil in the oil collection and separation chamber into the gravity separation chamber. According to the novel oil-water separation device, through the oleophylic and hydrophobic characteristics of the oil collecting plate, oil drops can be more easily gathered and enlarged on the surface of the oil collecting plate, and the floating process of the oil drops is accelerated.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil-water separators, and in particular relates to a novel oil-water separator. Background Art

[0002] In the chemical industry, oil-water separation is a crucial technology, widely used in various processes, including petroleum refining, chemical production, and environmental protection. Traditional oil-water separators primarily rely on the principle of gravity sedimentation. Their basic design principle is to allow the oil-water mixture to flow within a certain space. By slowing the flow rate and exploiting the difference in density between oil and water, the lighter oil phase floats to the surface, while the heavier water phase settles below.

[0003] However, although traditional oil-water separators can meet basic oil-water separation needs to a certain extent, their inherent limitations are becoming increasingly prominent. First, gravity sedimentation is a relatively slow process, especially for tiny oil droplets (i.e., free small oil particles). Due to their small surface area and light weight, they are difficult to effectively gather and float to the water surface in a short period of time, resulting in low separation efficiency. Secondly, traditional equipment has multiple floating oil chambers. During the step-by-step separation process, the oil can only exist in the upper part of each chamber and cannot be collected in a centralized manner, making subsequent separation work difficult.

[0004] To this end, we propose a new oil-water separation device to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problem that the prior art is difficult to effectively gather floating particles in an oil-water mixture in a short time, and proposes a novel oil-water separation device.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A novel oil-water separation device includes a box body, wherein a partition plate, an oil collecting and separating structure, and an oil transfer structure are provided in the box body, wherein:

[0008] The partition plate is vertically arranged at the bottom of the box body, so that the internal chamber of the box body is divided into a gravity separation chamber and an oil collection separation chamber. A plurality of connecting pipes are arranged at the bottom of the partition plate, and there is a separation space between the top of the partition plate and the box body for oil supply liquid transfer;

[0009] The oil collecting and separating structure is arranged in the oil collecting and separating chamber, and the oil collecting and separating structure comprises a plurality of horizontally arranged oil collecting plates;

[0010] The oil transfer structure is arranged corresponding to the interval space and is used to transfer the floating oil in the oil collection and separation chamber to the gravity separation chamber.

[0011] Preferably, the plurality of oil collecting plates are staggered, with some of the oil collecting plates fixed on the partition plates and other parts of the oil collecting plates fixed on the inner wall of the box, forming an S-shaped flow channel in the oil collecting and separating chamber.

[0012] Preferably, the oil collecting plate is made of oleophilic and hydrophobic polypropylene.

[0013] Preferably, the oil collecting plate is a corrugated plate, and a plurality of oil-permeable holes are opened at the crests of the oil collecting plate, and a plurality of water-permeable holes are opened at the troughs of the oil collecting plate.

[0014] Preferably, the oil transfer structure includes a drive shaft arranged through the box body, a motor coaxially fixedly connected to the drive shaft is installed on the outer wall of the box body, a plurality of oil suction turntables are fixedly arranged on the drive shaft, and an oil squeezing plate cooperating with the oil suction turntable is arranged on the partition plate.

[0015] Preferably, the oil absorption turntable includes a mounting plate and oil-absorbing hydrophobic cotton pads fixedly attached to both sides of the mounting plate.

[0016] Preferably, the oil squeezing plate is a toothed plate, the oil absorption turntable is embedded in the tooth openings at corresponding positions on the oil squeezing plate, and squeezing rollers with oil-absorbing hydrophobic cotton pads are rotatably provided on both sides of the tooth openings.

[0017] Preferably, the oil squeezing plate is arranged at an angle, and the end of the oil squeezing plate close to the oil collecting and separating chamber is a high end.

[0018] To sum up, the technical effects and advantages of the utility model are as follows: the new oil-water separation device forms an S-shaped flow channel in the oil collection and separation chamber through multiple oil collecting plates staggered in the oil collection and separation structure, which not only effectively reduces the oil flow rate and increases the residence time of oil droplets in the device, but also through the lipophilic and hydrophobic properties of the oil collecting plates, the oil droplets can more easily gather and grow on the surface of the oil collecting plates, thereby accelerating the floating process of the oil droplets. Combined with the design of the S-shaped flow channel, the oil-water separation effect is optimized, ensuring high-quality separation results.

[0019] The oil-absorbing hydrophobic cotton pad in the oil transfer structure not only has excellent oil absorption capacity, but also can play a demulsification role in the oil absorption process. The tiny oil droplets in the emulsion will be adsorbed and squeezed by the oil-absorbing hydrophobic cotton pad fibers when passing through the oil-absorbing hydrophobic cotton pad, making it easier to break the water film around the oil droplets and achieve emulsification. The oil droplets after demulsification are more likely to aggregate and be discharged with the squeezing process of the oil-absorbing hydrophobic cotton pad, effectively improving the recovery rate and purity of the oil, and can be smoothly transferred from the oil collection and separation chamber to the gravity separation chamber, which not only simplifies the oil collection process, but also allows the oil to be collected centrally in the gravity separation chamber, which is convenient for subsequent further processing or recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the internal structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0023] Figure 4 This is a structural diagram of the oil collecting plate in the utility model;

[0024] Figure 5 This is a schematic structural diagram of the absorption turntable in the present utility model;

[0025] Figure 6 It is a structural schematic diagram of the oil squeezing plate in the utility model.

[0026] In the figure: 1. Box body; 11. Gravity separation chamber; 12. Oil collection and separation chamber; 13. Arc baffle; 2. Partition; 21. Connecting pipe; 3. Oil collection and separation structure; 31. Oil collecting plate; 32. Oil permeable hole; 33. Water permeable hole; 4. Oil transfer structure; 41. Drive shaft; 42. Motor; 43. Oil suction turntable; 431. Mounting plate; 432. Oil-absorbing and hydrophobic cotton pad; 44. Oil squeezing plate; 441. Squeezing roller. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0029] Reference Figure 1-3 A novel oil-water separation device includes a box body 1, in which a partition plate 2, an oil collecting and separating structure 3 and an oil transfer structure 4 are arranged.

[0030] The partition plate 2 is vertically arranged at the bottom of the box body 1, so that the internal chamber of the box body 1 is divided into a gravity separation chamber 11 and an oil collection separation chamber 12. A plurality of connecting pipes 21 are arranged at the bottom of the partition plate 2, and there is an interval space for oil transfer between the top of the partition plate 2 and the box body 1. An inlet pipe, a drain pipe and an oil drain pipe are arranged on the box body 1. The inlet pipe and the oil drain pipe are connected to the gravity separation chamber 11, and the drain pipe is connected to the bottom of the oil collection separation chamber 12. The oil-water mixture is input into the gravity separation chamber 11 through the inlet pipe. In the gravity separation chamber 11, the oil-water mixture, under the action of gravity, relies on the difference in density between oil and water to make the lighter oil phase float on the water surface and the heavier water phase settle below. Among them, water flows into the oil collection separation chamber 12 through the connecting pipe 21. Due to the floating of the oil It floats on the top and is therefore blocked by the partition plate 2 and cannot enter the oil collecting and separating chamber 12. In a short period of time, large oil droplets are separated, and some small oil droplets and emulsified oil droplets will also enter the oil collecting and separating chamber 12 with the water flow. Under the action of the oil collecting and separating structure 3, the small oil droplets gather and become larger, accelerating to float up, and are transferred to the gravity separation chamber 11 through the oil transfer structure 4 to mix with the floating oil above the gravity separation chamber 11. In the process of oil transfer, it can play a role in demulsification, effectively improving the recovery rate and purity of the oil. An oil suction pipe is connected to the bottom of the oil drain pipe. The oil suction pipe is a hose with a float. The float floats on the oil to pump out the oil and can change its position as the oil level changes. There is no need for the oil to accumulate at a specific position for discharge.

[0031] The box body 1 is also provided with an arc-shaped baffle 13 facing the liquid inlet pipe, which can prevent the impact of the incoming liquid from generating excessive vortex turbulence in the gravity separation chamber 11, so that the oil and water are dispersed and mixed again under the impact.

[0032] The oil collecting and separation structure 3 is arranged in the oil collecting and separation chamber 12. The oil collecting and separation structure 3 includes a plurality of horizontally arranged oil collecting plates 31. The plurality of oil collecting plates 31 are staggered. Some of the oil collecting plates 31 are fixed on the partition plate 2, and the other part of the oil collecting plates 31 is fixed on the inner wall of the box body 1. An S-shaped flow channel is formed in the oil collecting and separation chamber 12. The water flows into the S-shaped flow channel from the bottom and flows upward through the connecting pipe 21, which effectively reduces the oil flow rate, increases the residence time of the oil droplets in the device, and improves the effect of oil flotation and separation. The oil collecting plate 31 is made of oleophilic and hydrophobic polypropylene. Small particles of oil droplets will adhere to the oil collecting plate 31, gather and grow larger on the surface of the oil collecting plate 31, and accelerate the floating process of the oil droplets. Combined with the design of the S-shaped flow channel, the oil-water separation effect is optimized, ensuring high-quality separation results.

[0033] Reference Figure 1-4The oil collecting plate 31 is a corrugated plate, which effectively increases the contact area between the oil collecting plate 31 and the water flow, ensuring the adhesion effect of small particles of oil droplets, and a plurality of oil holes 32 are opened at the crest of the oil collecting plate 31, and a plurality of water holes 33 are opened at the trough of the oil collecting plate 31. After the small particles of oil adhere and gather into large particles of oil droplets, they float along the oil collecting plate 31 until they reach the bottom of the crest of the oil collecting plate 31, float and gather through the oil holes 32, and finally transfer to the gravity separation chamber 11 and are discharged through the oil suction pipe. After the oil is discharged, the water can be discharged through the drain pipe, and the accumulated water in the trough of the oil collecting plate 31 falls through the water holes 33.

[0034] The oil transfer structure 4 is arranged corresponding to the interval space, and is used to transfer the floating oil in the oil collection and separation chamber 12 to the gravity separation chamber 11, which simplifies the oil collection process and enables the oil to be centrally collected in the gravity separation chamber 11, facilitating subsequent further processing or recycling.

[0035] Reference Figure 1 、 Figure 3 、 Figure 5 and Figure 6 The oil transfer structure 4 includes a drive shaft 41 that passes through the box body 1. A motor 42 that is coaxially fixed to the drive shaft 41 is installed on the outer wall of the box body 1. The rotation of the motor 42 can control the rotation of the drive shaft 41. A plurality of oil suction turntables 43 are fixed on the drive shaft 41. An oil squeezing plate 44 that cooperates with the oil suction turntable 43 is provided on the partition plate 2. The lower half of the oil suction turntable 43 is immersed in the oil-water mixture in the oil collecting and separating chamber 12 to absorb the oil therein. As the oil suction turntable 43 rotates, it cooperates with the oil squeezing plate 44 to squeeze the oil adsorbed in the oil suction turntable 43 into the side of the partition plate 2 close to the gravity separation chamber 11.

[0036] Reference Figure 1 and 5 The oil absorption turntable 43 includes a mounting plate 431 and oil-absorbing hydrophobic cotton pads 432 fixedly attached to both sides of the mounting plate 431. The oil-absorbing hydrophobic cotton pads 432 have the characteristics of oil absorption and hydrophobicity. Specifically, polyurethane sponge, zinc oxide modified sponge, graphite modified sponge, nanomaterial modified sponge and other materials can be used. The oil-absorbing hydrophobic cotton pads 432 not only have the ability to absorb oil, but also can play a role in demulsification during the oil absorption process. When the tiny oil droplets in the emulsion pass through the oil-absorbing hydrophobic cotton pads 432, they will be adsorbed and squeezed by the fibers of the oil-absorbing hydrophobic cotton pads 432, thereby making it easier to break the water film around the oil droplets and realize the demulsification of the emulsion. The oil droplets after demulsification are more likely to aggregate and are discharged with the squeezing process of the oil-absorbing hydrophobic cotton pads 432, thereby effectively improving the recovery rate and purity of the oil.

[0037] Reference Figure 1 and 6The oil squeezing plate 44 is a toothed plate, and the oil suction turntable 43 is embedded in the tooth opening at the corresponding position on the oil squeezing plate 44, and squeezing rollers 441 with squeezing oil-absorbing hydrophobic cotton pads 432 are rotated on both sides of the tooth opening. The oil suction turntable 43 rotates from the oil collecting and separation chamber 12 to the gravity separation chamber 11 side along the drive shaft 41. The full oil-absorbing hydrophobic cotton pad 432 after absorbing the oil squeezes the oil into the gravity separation chamber 11 under the squeezing action of the squeezing roller 441.

[0038] Reference Figure 1 、 Figure 3 and 6 The oil squeezing plate 44 is tilted, and the end of the oil squeezing plate 44 close to the oil collecting and separating chamber 12 is a high end, so that after the oil is squeezed out, it can flow along the tilted oil squeezing plate 44 to the side of the gravity separation chamber 11.

[0039] Working principle:

[0040] The oil-water mixture is input into the gravity separation chamber 11 through the liquid inlet pipe. In the gravity separation chamber 11, the oil-water mixture, under the action of gravity, relies on the difference in density between oil and water, causing the lighter oil phase to float on the water surface and the heavier water phase to settle below. Among them, water flows into the oil collection and separation chamber 12 through the connecting pipe 21. The water flows upward from the bottom of the S-shaped flow channel through the connecting pipe 21, effectively reducing the oil flow rate, increasing the residence time of oil droplets in the device, and improving the effect of oil floating and separation. In addition, the oil collecting plate 31 is made of oleophilic and hydrophobic polypropylene material, and small particles of oil droplets will adhere to the oil collecting plate 31. The oil droplets gather and grow larger on the surface of the oil collecting plate 31, which accelerates the floating process of the oil droplets. The motor 42 is started, and the rotation of the motor 42 can control the rotation of the drive shaft 41, and the oil gathered above the oil collecting and separating chamber 12. The lower half of the oil suction turntable 43 is immersed in the oil-water mixture in the oil collecting and separating chamber 12, and absorbs the oil therein. As the oil suction turntable 43 rotates, the full oil-absorbing and hydrophobic cotton pad 432 after absorbing the oil squeezes the oil into the gravity separation chamber 11 under the squeezing action of the squeezing roller 441, and the float floats on the oil to pump and drain the oil. After the oil is discharged, the water can be discharged through the drain pipe to achieve oil-water separation.

Claims

1. A novel oil-water separation device, comprising a housing (1), characterized in that: The box (1) is provided with a partition plate (2), an oil collecting and separating structure (3) and an oil transfer structure (4), wherein: The partition plate (2) is vertically arranged at the bottom of the box body (1), so that the internal chamber of the box body (1) is divided into a gravity separation chamber (11) and an oil collection separation chamber (12); a plurality of connecting pipes (21) are arranged at the bottom of the partition plate (2), and a space for oil supply liquid transfer is provided between the top of the partition plate (2) and the box body (1); The oil collecting and separating structure (3) is arranged in the oil collecting and separating chamber (12), and the oil collecting and separating structure (3) comprises a plurality of horizontally arranged oil collecting plates (31); The oil transfer structure (4) is arranged corresponding to the separation space and is used to transfer the floating oil in the oil collection and separation chamber (12) to the gravity separation chamber (11).

2. A novel oil-water separation device according to claim 1, characterized in that: The plurality of oil collecting plates (31) are staggered and distributed, with some of the oil collecting plates (31) being fixed on the partition plate (2) and others being fixed on the inner wall of the box body (1), thereby forming an S-shaped flow channel in the oil collecting and separating chamber (12).

3. A novel oil-water separation device according to claim 2, characterized in that: The oil collecting plate (31) is made of oleophilic and hydrophobic polypropylene.

4. A novel oil-water separation device according to claim 2, characterized in that: The oil collecting plate (31) is a corrugated plate, and a plurality of oil-permeable holes (32) are provided at the crests of the oil collecting plate (31), and a plurality of water-permeable holes (33) are provided at the troughs of the oil collecting plate (31).

5. The novel oil-water separation device according to claim 1 is characterized in that: The oil transfer structure (4) includes a drive shaft (41) that passes through the box body (1); a motor (42) that is coaxially fixedly connected to the drive shaft (41) is installed on the outer wall of the box body (1); a plurality of oil suction turntables (43) are fixedly arranged on the drive shaft (41); and an oil squeezing plate (44) that cooperates with the oil suction turntables (43) is arranged on the partition plate (2).

6. A novel oil-water separation device according to claim 5, characterized in that: The oil absorption turntable (43) comprises a mounting plate (431) and oil absorption and hydrophobic cotton pads (432) fixedly attached to both sides of the mounting plate (431).

7. A novel oil-water separation device according to claim 6, characterized in that: The oil squeezing plate (44) is a toothed plate, the oil absorbing rotary disc (43) is embedded in the tooth openings at corresponding positions on the oil squeezing plate (44), and squeezing rollers (441) provided with squeezing oil-absorbing hydrophobic cotton pads (432) are rotatably arranged on both sides of the tooth openings.

8. A novel oil-water separation device according to claim 7, characterized in that: The oil squeezing plate (44) is arranged obliquely, and the end of the oil squeezing plate (44) close to the oil collecting and separating chamber (12) is a high end.

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