Continuous oil-water separation device based on adsorption or filtering material

Abstract

The utility model discloses a continuous oil-water separation device based on adsorption or filtering materials, which belongs to the technical field of oil-water separators, and comprises a tank body, an oil collecting and separating mechanism for accelerating oil-water separation is arranged in the tank body, the oil collecting and separating mechanism comprises a disc, an extrusion structure, a central shaft and a plurality of floating rings, the disc comprises an upper shell and a lower shell, an oleophylic and hydrophobic cotton pad is attached to the inner wall of the upper shell, and a hydrophilic and oleophobic cotton pad is attached to the inner wall of the lower shell; the extrusion structure is used for extruding and draining the oleophylic and hydrophobic cotton pad and the hydrophilic and oleophobic cotton pad; and the plurality of floating rings are used for providing buoyancy enough for the oil collecting and separating mechanism to float on the liquid surface. According to the continuous oil-water separation device based on the adsorption or filtering material, the central shaft is driven by the motor to rotate, and dynamic extrusion of the extrusion structure is realized, so that the oleophylic and hydrophobic cotton pad in the upper shell and the hydrophilic and oleophobic cotton pad in the lower shell can continuously and effectively perform oil-water separation, the separation time is shortened, and the separation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil-water separators, in particular to a continuous oil-water separation device based on adsorption or filtering materials. Background Art

[0002] Traditional oil-water separation methods often rely on gravity sedimentation or chemical treatment. These methods are inefficient when dealing with large amounts of mixed oil and water and require long processing times. This is particularly true when dealing with wastewater containing tiny oil droplets or emulsified oil. Furthermore, while chemical treatment methods can accelerate the separation process, they can introduce additional chemicals, causing secondary environmental pollution.

[0003] To improve separation quality, a number of oil-water separation devices based on adsorption or filtration materials have emerged on the market. These devices exploit the properties of adsorption or filtration materials to separate oil and water. However, these devices still have shortcomings in separating tiny oil droplets and emulsified oil, and their separation effectiveness needs to be further improved. Furthermore, when collecting oil and water, they often use a fixed collection structure that cannot adapt to changes in the liquid level, limiting the device's continuous processing capacity and flexibility.

[0004] To this end, we propose a continuous oil-water separation device based on adsorption or filtration materials to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problem of low efficiency of the prior art in treating mixed oil and water containing a large number of tiny oil droplets and emulsified oil, and proposes a continuous oil-water separation device based on adsorption or filtering materials.

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

[0007] A continuous oil-water separation device based on adsorption or filtration materials includes a tank body, on which a liquid inlet pipe, a drain pipe, an oil discharge pipe, and a slag discharge pipe are respectively provided. An oil collecting and separating mechanism for accelerating oil-water separation is provided in the tank body, and the oil collecting and separating mechanism includes:

[0008] The dish comprises an upper shell and a lower shell, the upper shell and the lower shell being connected by a plurality of connecting columns, a gap for fluid circulation being formed in the upper shell and the lower shell, an oleophilic and hydrophobic cotton pad being attached to the inner wall of the upper shell, and a hydrophilic and oleophobic cotton pad being attached to the inner wall of the lower shell;

[0009] The squeezing structure is used to squeeze and drain the oleophilic and hydrophobic cotton pads and the hydrophilic and oleophobic cotton pads;

[0010] The central shaft is vertically rotatably arranged in the tank body and is fixedly connected to the output end of the motor fixedly installed at the bottom of the tank body;

[0011] Multiple float rings are used to provide sufficient buoyancy for the oil collecting and separating mechanism to float on the liquid surface.

[0012] Preferably, the upper shell and the lower shell are both conical thin shell structures with openings at their end points, and the upper shell and the lower shell are coaxially symmetrically arranged to form a dish-shaped structure with a cavity.

[0013] Preferably, the extrusion structure includes a sleeve that is slidably fitted with the central axis, and two groups of connecting rods are fixedly connected to the outer circumference of the sleeve. Both groups of connecting rods are fixedly connected to a rotating ring, and a plurality of extrusion strips are fixedly mounted on the rotating ring.

[0014] Preferably, the cross section of the central axis is a regular hexagon, and the inner hole of the sleeve is adapted to the central axis.

[0015] Preferably, the extruded strip is spiral-shaped, and the rotation direction of the extruded strip points to the side where the concave surface is located.

[0016] Preferably, a plurality of arc-shaped blades are provided between the two rotating rings, and the concave surfaces of the arc-shaped blades are oriented in the same direction as the concave surfaces of the extrusion strips.

[0017] Preferably, a plurality of the floating rings are fixed to the bottom surface of the lower shell, the buoyancy of the entire oil collecting and separating mechanism in clean water is greater than its own weight, and the draft of the oil collecting and separating mechanism is close to the opening of the upper shell.

[0018] To sum up, the technical effects and advantages of the utility model are as follows: the continuous oil-water separation device based on adsorption or filtration materials drives the central shaft to rotate by a motor to realize dynamic extrusion of the rotating ring and the extrusion structure, so that the oleophilic and hydrophobic cotton pad in the upper shell and the hydrophilic and oleophobic cotton pad in the lower shell can continuously and effectively separate oil and water, breaking the limitations of traditional static separation, greatly shortening the separation time, and improving the separation efficiency.

[0019] The oleophilic and hydrophobic cotton pad in the upper shell and the hydrophilic and oleophobic cotton pad in the lower shell respectively adsorb and break up oil and water, which can more effectively separate tiny oil droplets and emulsified oil, reduce residue and improve separation quality.

[0020] The design of the conical thin shell structure enables the separated oil and water to gather along the cone surface toward the central axis, enhancing the collection effect and facilitating subsequent processing.

[0021] The design of the float ring enables the oil collecting and separating mechanism to adaptively adjust with changes in the liquid level, always keeping it at the liquid level, thus improving the continuous processing capacity and flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the internal structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the appearance structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the disc in the utility model;

[0026] Figure 5 It is a structural schematic diagram of the extrusion structure in the utility model.

[0027] In the figure: 1. Tank body; 11. Liquid inlet pipe; 12. Drain pipe; 13. Oil drain pipe; 14. Slag discharge pipe; 2. Disc; 21. Upper shell; 22. Lower shell; 23. Connecting column; 24. Oleophilic and hydrophobic cotton pad; 25. Hydrophilic and oleophobic cotton pad; 3. Extrusion structure; 31. Casing; 32. Rotating ring; 33. Extrusion strip; 34. Arc blade; 4. Center shaft; 5. Floating ring; 6. Motor. DETAILED DESCRIPTION

[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 The continuous oil-water separation device based on adsorption or filtration materials includes a tank body 1, on which are respectively provided a liquid inlet pipe 11, a drain pipe 12, an oil discharge pipe 13 and a slag discharge pipe 14. The liquid inlet pipe 11 and the drain pipe 12 are respectively arranged on the side wall of the tank body 1 near the bottom of the tank body 1, the slag discharge pipe 14 is installed at the bottom of the tank body 1, the oil discharge pipe 13 is installed at the top of the tank body 1, and the oil discharge pipe 13 is connected to an oil extraction hose. An oil collection and separation mechanism for accelerating oil-water separation is provided in the tank body 1. The oil collection and separation machine The structure includes a disc 2, an extrusion structure 3, a central shaft 4 and multiple floats 5. Under the action of the floats 5, the oil collection and separation mechanism will float on the oil-water mixture. Under the action of the oil collection and separation mechanism and the gravity difference between the oil and water, the oil and water begin to separate, with the oil in the upper layer and the water in the lower layer. The oil extraction hose is installed on the top of the disc 2, so that the input end of the oil extraction hose moves synchronously with the disc 2. Compared with the existing technology, there is no need to wait for the oil to reach the oil discharge position, and the oil can be extracted at any time, which is more flexible to use.

[0030] The disc 2 includes an upper shell 21 and a lower shell 22, which are connected by a plurality of connecting columns 23. A gap for fluid circulation is formed in the upper shell 21 and the lower shell 22. When the disc 2 floats on the oil-water mixture, the gap between the upper shell 21 and the lower shell 22 is immersed in the oil-water mixture, and the oil-water mixture enters the disc 2 through the gap for separation. An oleophilic and hydrophobic cotton pad 24 is attached to the inner wall of the upper shell 21, and a hydrophilic and oleophobic cotton pad 25 is attached to the inner wall of the lower shell 22. In the oil-water mixture, the oil and water are naturally settled by gravity, and the speed of oil-water separation is slow and the separation effect is poor. The reason is that the oil-water mixture The material contains oil-in-water, water-in-oil and extremely small oil droplets, which are difficult to separate due to gravity. The oil-water separation is accelerated by adsorption through the oleophilic and hydrophobic cotton pad 24 and the hydrophilic and oleophobic cotton pad 25. The oleophilic and hydrophobic cotton pad 24 has the characteristics of oil absorption and hydrophobicity, and plays a demulsification role in the oil absorption process to destroy the small particle emulsion of oil-in-water. The hydrophilic and oleophobic cotton pad 25 has the characteristics of water absorption and oil phobia, and plays a demulsification role in the water absorption process to destroy the small particle emulsion of oil-in-water. The oleophilic and hydrophobic cotton pad 24 and the hydrophilic and oleophobic cotton pad 25 are squeezed by the squeezing structure 3 to gather the oil upward and the water downward, thereby accelerating the separation of oil and water.

[0031] Reference Figure 4 The upper shell 21 and the lower shell 22 are both conical thin shell structures with openings at the end points. The upper shell 21 and the lower shell 22 are coaxially symmetrically arranged to form a dish-shaped structure with a cavity. The design of the conical thin shell structure enables the separated oil and water to gather along the cone surface toward the central axis 4, thereby enhancing the collection effect and facilitating subsequent processing.

[0032] Multiple floats 5 are used to provide sufficient buoyancy for the oil collecting and separating mechanism to float on the liquid surface. Multiple floats 5 are fixed to the bottom surface of the lower shell 22. The buoyancy of the entire oil collecting and separating mechanism in clean water is greater than its own weight, and the draft of the oil collecting and separating mechanism is close to the opening of the upper shell 21. The buoyancy generated by clean water is greater than the buoyancy generated by the oil-water mixture. In the initial stage of separation, the oil-water separation speed is fast, and the floating position of the entire oil collecting and separating mechanism is low. The disc 2 is immersed in the oil-water mixture to continuously separate the oil and water. When the oil level increases, the oil in the oil-water mixture is separated, and the water below increases the buoyancy of the oil collecting and separating mechanism until the opening of the upper shell 21 exceeds the oil-water interface. At this time, the separated oil is directly input into the upper oil through the opening of the upper shell 21 to avoid re-mixing of oil and water. The design of the float 5 enables the oil collecting and separating mechanism to adaptively adjust as the liquid level changes, and always remain at the liquid level, thereby improving the continuous processing capacity and flexibility of the device.

[0033] Reference Figure 1-3 and Figure 5 The extrusion structure 3 is used to squeeze and drain the oleophilic and hydrophobic cotton pad 24 and the hydrophilic and oleophobic cotton pad 25, so that the oil and water can be gathered along the cone surface toward the central axis 4.

[0034] A plurality of vertically arranged limit rods are provided in the tank body 1 , and the limit rods are slidably connected to the disc 2 to ensure that the disc 2 does not rotate during the up and down floating process, thereby achieving cooperation with the extrusion structure 3 .

[0035] The central shaft 4 is vertically rotatably arranged in the tank body 1 and is fixedly connected to the output end of the motor 6 fixedly installed at the bottom of the tank body 1. The central shaft 4 is driven to rotate by the motor 6.

[0036] Reference Figure 1 and 5 The extrusion structure 3 includes a sleeve 31 that slides with the central shaft 4. Two sets of connecting rods are fixedly connected to the outer circumference of the sleeve 31. Both sets of connecting rods are fixedly connected to a rotating ring 32. A plurality of extrusion strips 33 are fixedly installed on the rotating ring 32. The extrusion strips 33 are pressed tightly against the oleophilic and hydrophobic cotton pad 24 and the hydrophilic and oleophobic cotton pad 25. The rotating ring 32 floats up and down with the disc 2, driving the sleeve 31 to slide on the central shaft 4. No matter where it is in the tank body 1, the central shaft 4 can drive the sleeve 31 to rotate, so that the extrusion strips 33 squeeze the oleophilic and hydrophobic cotton pad 24 and the hydrophilic and oleophobic cotton pad 25 to discharge liquid.

[0037] The cross section of the central shaft 4 is a regular hexagon, and the inner hole of the sleeve 31 is adapted to the central shaft 4 so that the sleeve 31 can slide axially on the central shaft 4 while maintaining stable transmission.

[0038] The extrusion strip 33 is spiral-shaped, and the rotation direction of the extrusion strip 33 points to the concave side. When the extrusion strip 33 rotates, the oil and water are gathered along the cone surface toward the central axis 4. The extrusion side of the extrusion strip 33 has a flange to reduce the damage of the extrusion strip 33 to the oleophilic and hydrophobic cotton pad 24 and the hydrophilic and oleophobic cotton pad 25 during extrusion.

[0039] A plurality of arc-shaped blades 34 are provided between the two rotating rings 32 . The concave surface of the arc-shaped blades 34 is in the same direction as the concave surface of the extrusion strip 33 . When the rotating ring 32 rotates, the arc-shaped blades 34 are driven to rotate, so that the oil-liquid mixture flows into the disc 2 , promoting oil-water separation.

[0040] Working principle:

[0041] The oil-water mixture that needs to be separated is injected into the tank body 1 through the liquid inlet pipe 11. Under the action of the float ring 5, the oil collecting and separating mechanism will float on the oil-water mixture. Under the action of the gravity difference between oil and water, the oil and water begin to separate gradually, with the oil in the upper layer and the water in the lower layer. The motor 6 is started, and the central shaft 4 is driven by the motor 6 to rotate, which drives the sleeve 31 to rotate, and then the rotating ring 32 rotates, so that the squeezing strip 33 squeezes the oleophilic and hydrophobic cotton pad 24 and the hydrophilic and oleophobic cotton pad 25 to discharge liquid. The oleophilic and hydrophobic cotton pad 24 has the function of absorbing oil and repelling water. The hydrophilic and oleophobic cotton pad 25 has the characteristics of water absorption and oil repellency, and plays a demulsification role in the process of water absorption, destroying the small particle emulsion of oil in water. The oleophilic and hydrophobic cotton pad 24 and the hydrophilic and oleophobic cotton pad 25 are squeezed by the squeezing bar 33 to collect the oil upward and the water downward, thereby accelerating the separation of oil and water. The upper floating oil can be extracted through the oil extraction hose, the lower water can be discharged through the drain pipe 12, and the precipitated solid residue can be discharged through the slag discharge pipe 14.

Claims

1. A continuous oil-water separation device based on adsorption or filtration materials, comprising a tank body (1), wherein the tank body (1) is provided with a liquid inlet pipe (11), a drain pipe (12), an oil drain pipe (13) and a slag drain pipe (14), and wherein: The tank body (1) is provided with an oil collecting and separating mechanism for accelerating oil-water separation, and the oil collecting and separating mechanism comprises: A disc (2) comprises an upper shell (21) and a lower shell (22), wherein the upper shell (21) and the lower shell (22) are connected via a plurality of connecting columns (23), a gap for fluid circulation is formed in the upper shell (21) and the lower shell (22), an oleophilic and hydrophobic cotton pad (24) is attached to the inner wall of the upper shell (21), and a hydrophilic and oleophobic cotton pad (25) is attached to the inner wall of the lower shell (22); An extrusion structure (3) is used to squeeze and drain the oleophilic and hydrophobic cotton pad (24) and the hydrophilic and oleophobic cotton pad (25); A central shaft (4) is vertically rotatably disposed in the tank body (1) and is fixedly connected to an output end of a motor (6) fixedly mounted on the bottom of the tank body (1); A plurality of float rings (5) are used to provide sufficient buoyancy for the oil collecting and separating mechanism to float on the liquid surface.

2. The continuous oil-water separation device based on adsorption or filtration materials according to claim 1, characterized in that: The upper shell (21) and the lower shell (22) are both conical thin shell structures with openings at their endpoints. The upper shell (21) and the lower shell (22) are coaxially symmetrically arranged to form a dish-shaped structure with a cavity.

3. The continuous oil-water separation device based on adsorption or filtration materials according to claim 1, characterized in that: The extrusion structure (3) comprises a sleeve (31) that is slidably engaged with the central shaft (4); two groups of connecting rods are fixedly connected to the outer peripheral surface of the sleeve (31); both groups of connecting rods are fixedly connected to a rotating ring (32); and a plurality of extrusion strips (33) are fixedly mounted on the rotating ring (32).

4. The continuous oil-water separation device based on adsorption or filtration materials according to claim 3, characterized in that: The cross section of the central shaft (4) is a regular hexagon, and the inner hole of the sleeve (31) is adapted to the central shaft (4).

5. The continuous oil-water separation device based on adsorption or filtration materials according to claim 3, characterized in that: The extrusion strip (33) is spiral-shaped, and the rotation direction of the extrusion strip (33) points to the side where the concave surface is located.

6. The continuous oil-water separation device based on adsorption or filtration materials according to claim 3, characterized in that: A plurality of arc-shaped blades (34) are provided between the two rotating rings (32), and the concave surfaces of the arc-shaped blades (34) are oriented in the same direction as the concave surfaces of the extrusion strips (33).

7. The continuous oil-water separation device based on adsorption or filtration materials according to claim 1, characterized in that: The plurality of floating rings (5) are fixed to the bottom surface of the lower shell (22), the buoyancy of the entire oil collecting and separating mechanism in clean water is greater than its own weight, and the draft of the oil collecting and separating mechanism is close to the opening of the upper shell (21).

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