An energy-saving ceramic perforated plate type micro-nano bubble oil separator

Abstract

This utility model discloses an energy-saving ceramic perforated plate type micro-nano bubble oil separator, relating to the field of ceramic perforated plate bubble oil separation technology. It includes an aeration zone, a pretreatment zone connected to one side of the aeration zone, and a separation zone connected to the other side of the aeration zone. A filter plate is fixedly installed inside the pretreatment zone, and the filter plate is inclined. A ceramic microporous plate is fixedly installed at the bottom of the aeration zone, and the ceramic microporous plate is fixedly connected to an air supply pipe. This utility model replaces the traditional ordinary porous plate with a ceramic microporous plate, utilizing its precise microporous structure to generate micro-nano bubbles under low pressure conditions. This reduces the air compressor's air supply pressure requirement and the energy consumption of continuous high-pressure air supply. A backwashing mechanism is used to quickly remove impurities adhering to the surface of the ceramic microporous plate without requiring machine shutdown for disassembly and cleaning, reducing energy loss and labor costs during maintenance.

Description

Technical Field

[0001] This specification relates to the field of ceramic perforated plate bubble oil separation technology, and more particularly to an energy-saving ceramic perforated plate micro-nano bubble oil separator. Background Technology

[0002] Bubble oil separators are widely used in the wastewater pretreatment stage of industries such as machining, catering, and petrochemicals to treat wastewater containing oil and solid insoluble particles.

[0003] In existing technologies, the bubble oil separation system, which consists of metal aeration pipes, ordinary ceramic aeration heads, and high-pressure air pumps, requires high air pressure to generate a sufficient number of micro-nano bubbles due to the large aperture of the aeration device. This results in the air pump operating under continuous high load, leading to high energy consumption. At the same time, traditional aeration devices are easily clogged by oil, requiring frequent shutdowns for cleaning or replacement. This not only increases labor maintenance costs but also affects processing efficiency. The high-pressure gas or clean water consumed during the cleaning process further exacerbates the waste of energy and resources, affecting the economic applicability of the equipment.

[0004] To address these issues, we designed an energy-saving ceramic perforated plate micro-nano bubble oil separator. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose an energy-saving ceramic perforated plate type micro-nano bubble oil separator to solve the problem.

[0006] Based on the above objectives, this utility model provides an energy-saving ceramic perforated plate type micro-nano bubble oil separator, including an aeration zone, a pretreatment zone connected to one side of the aeration zone, and a separation zone connected to the other side of the aeration zone. A filter plate is fixedly installed inside the pretreatment zone, and the filter plate is inclined. A ceramic microporous plate is fixedly installed at the bottom of the aeration zone, and an air supply pipe is fixedly connected to the ceramic microporous plate. The ceramic microporous plate is connected to an air compressor through the air supply pipe, and the air supply pipe is connected to a backwashing mechanism. An oil collection tank is opened on the upper part of the separation zone away from the aeration zone, and the opening height of the oil collection tank is higher than the normal liquid level of the separation zone.

[0007] Furthermore, the backwashing mechanism includes a pulse air pipe located below the ceramic microporous plate. The pulse air pipe is provided with nozzles at intervals, and the outlet direction of the nozzles faces the lower surface of the ceramic microporous plate. There are multiple sets of pulse air pipes, and all sets of pulse air pipes are connected to the air supply pipe. A three-way valve is installed between the air supply pipe and the pulse air pipe.

[0008] Furthermore, the surface of the ceramic microporous plate is covered with a nano-titanium dioxide coating, a water pipe is connected to the upper part of the filter plate, the bottom end of the water pipe is located at the lower part of the aeration zone, and a weir plate is fixedly connected between the aeration zone and the separation zone.

[0009] Furthermore, a Venturi suction pipe and a gas flow meter are sequentially installed on the gas supply pipeline.

[0010] Furthermore, a pulse valve is fixedly installed on the pulse air tube.

[0011] Furthermore, the three-way valve has a first interface, a second interface, and a third interface, and the gas supply pipe is connected to the first interface and the second interface, respectively, and the third interface is connected to the pulse gas pipe.

[0012] As can be seen from the above, the beneficial effects provided by this utility model are:

[0013] 1. By replacing the traditional porous plate with a ceramic microporous plate, micro-nano bubbles can be generated under low pressure using its precise microporous structure. This reduces the air supply pressure requirement of the air compressor, reduces the energy consumption of continuous high-pressure air supply, and solves the energy-inefficient problem caused by the high-pressure drive required for bubble generation in existing separators.

[0014] 2. By setting up a backwashing mechanism consisting of a three-way valve, a pulse air pipe, a nozzle, and a pulse valve, impurities attached to the surface of the ceramic microporous plate can be quickly removed by short-term pulse purging without stopping the machine for disassembly and cleaning, reducing energy consumption and labor costs during maintenance. The oil collection tank uses the liquid level difference to achieve natural oil collection without the need for additional power drive, further improving the energy efficiency and operating efficiency of the equipment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in one or more embodiments of this specification or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the overall external structure of this utility model;

[0017] Figure 2 This is a three-dimensional structural schematic diagram of the front internal half-section view of this utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a schematic diagram of the structure of the three-way valve of this utility model.

[0020] In the diagram: 1. Filter plate; 2. Pretreatment zone; 3. Aeration zone; 4. Separation zone; 5. Water pipe; 6. Ceramic microporous plate; 7. Pulse air pipe; 8. Nozzle; 9. Pulse valve; 10. Three-way valve; 11. Air supply pipe; 12. Venturi suction pipe; 13. Gas flow meter; 14. Air compressor; 15. Oil collection tank; 16. Weir plate; 101. First interface; 102. Second interface; 103. Third interface. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0022] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] Please see Figures 1-4This utility model provides a technical solution: an energy-saving ceramic perforated plate type micro-nano bubble oil separator, including an aeration zone 3, a pretreatment zone 2 connected to one side of the aeration zone 3, an inlet at the top of the pretreatment zone 2, and a separation zone 4 connected to the other side of the aeration zone 3, with an outlet at the bottom of the separation zone 4. A filter plate 1 is fixedly installed inside the pretreatment zone 2, and the filter plate 1 is inclined. A ceramic microporous plate 6 is fixedly installed at the bottom of the aeration zone 3, and an air supply pipe 11 is fixedly connected to the ceramic microporous plate 6. The ceramic microporous plate 6 is connected to an air compressor 14 through the air supply pipe 11, and the air supply pipe 11 is connected to a backwashing mechanism. The backwashing mechanism includes a pulse air pipe 7 located below the ceramic microporous plate 6. The air pipe 7 is provided with nozzles 8 at intervals. The outlet direction of the nozzles 8 is towards the lower surface of the ceramic microporous plate 6. There are multiple sets of pulse air pipes 7. All sets of pulse air pipes 7 are connected to the air supply pipe 11. A three-way valve 10 is installed between the air supply pipe 11 and the pulse air pipe 7. The interfaces of the three-way valve 10 are the first interface 101, the second interface 102 and the third interface 103. The air supply pipe 11 is connected to the first interface 101 and the second interface 102 respectively. The third interface 103 is connected to the pulse air pipe 7. A pulse valve 9 is fixedly installed on the pulse air pipe 7. An oil collection tank 15 is opened on the side of the separation zone 4 away from the aeration zone 3. The opening height of the oil collection tank 15 is higher than the normal liquid level of the separation zone 4.

[0024] In practice, wastewater containing oil and insoluble solid particles enters from the inlet at the top of the pretreatment zone 2. After being intercepted by the inclined filter plate 1, larger solid particles are intercepted, and the wastewater flows naturally into the aeration zone 3. The air compressor 14 is started, and compressed gas is delivered through the air supply pipe 11. At this time, the first port 101 and the second port 102 of the three-way valve 10 remain connected. The gas enters the ceramic microporous plate 6 through the air supply pipe 11. The ceramic microporous plate 6 uses low-pressure gas to generate micro-nano bubbles through its microporous structure. The bubbles mix thoroughly with the wastewater and carry oil and fine solid particles to the separation zone 4. The oil is located in the upper part of the separation zone 4. The wastewater naturally accumulates and flows into the oil collection tank 15 due to the liquid level difference. The treated wastewater is discharged from the outlet at the bottom of the separation zone 4. When the ceramic microporous plate 6 becomes clogged and needs backwashing, switch the three-way valve 10 to connect the first port 101 with the third port 103. At the same time, open the pulse valve 9. Compressed gas enters the pulse air pipe 7 through the third port 103 and blows the lower surface of the ceramic microporous plate 6 in a pulse form through the nozzle 8 to remove the attached impurities. After the backwashing is completed, close the pulse valve 9 and switch the three-way valve 10 again to connect the first port 101 with the second port 102 to restore the normal aeration separation state.

[0025] See Figures 1-3The surface of the ceramic microporous plate 6 is covered with a nano-titanium dioxide coating, which has strong oxidizing and hydrophilic properties. This reduces the adhesion of oil and solid particles to the surface of the ceramic microporous plate 6, lowers the probability of clogging, and improves the corrosion resistance of the ceramic microporous plate 6, extending its service life. The upper part of the filter plate 1 is connected to a water pipe 5, and the bottom end of the water pipe 5 is located at the lower part of the aeration zone 3. When a large amount of solid impurities are intercepted by the filter plate 1, the surface of the filter plate 1 can be rinsed by water flow, and the impurities can be flushed into the bottom of the pretreatment zone 2 for easy subsequent cleaning. A weir plate 16 is fixedly connected between the aeration zone 3 and the separation zone 4, so that the wastewater containing air bubbles in the aeration zone 3 flows evenly into the separation zone 4, avoiding water flow turbulence that affects the adhesion and separation effect of oil and air bubbles.

[0026] In specific implementation, based on the above implementation, a Venturi suction pipe 12 and a gas flow meter 13 are sequentially installed on the gas supply pipe 11. The gas flow meter 13 allows the operator to adjust the output of the air compressor 14 according to the actual processing needs, avoiding gas waste. The throat of the Venturi suction pipe 12 is provided with an air inlet, which is connected to the atmosphere. It uses the negative pressure generated by the gas flow to draw air from the outside, increasing the total gas volume and reducing the gas supply load of the air compressor 14, thereby achieving energy saving.

[0027] Working principle: Before use, oily wastewater enters from the inlet at the top of the pretreatment zone 2. After passing through the inclined filter plate 1 to intercept large particles, it flows into the aeration zone 3. The air compressor 14 starts and supplies air to the ceramic microporous plate 6 through the air supply pipe 11. The ceramic microporous plate 6 generates micro-nano bubbles that mix with the wastewater, carrying oil and fine particles to the separation zone 4. After the oil accumulates, it is discharged through the oil collection tank 15, and the treated clean water flows out from the outlet at the bottom of the separation zone 4. When the ceramic microporous plate 6 becomes clogged, the three-way valve 10 is switched to allow compressed air to enter the pulse air pipe 7. The pulse valve 9 opens, and the nozzle 8 performs pulse backwashing on the ceramic microporous plate 6. After the backwashing is completed, the three-way valve 10 is restored to the normal aeration state.

[0028] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this disclosure (including the claims) is limited to these examples; within the scope of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this invention as described above, which are not provided in the details for the sake of brevity.

[0029] The embodiments of this utility model are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An energy-saving ceramic orifice plate type micro-nano bubble oil separator comprising an aeration zone (3), characterized in that, The aeration zone (3) is connected to a pretreatment zone (2) on one side and to a separation zone (4) on the other side. A filter plate (1) is fixedly installed inside the pretreatment zone (2). The filter plate (1) is inclined. A ceramic microporous plate (6) is fixedly installed at the bottom of the aeration zone (3). The ceramic microporous plate (6) is fixedly connected to an air supply pipe (11). The ceramic microporous plate (6) is connected to an air compressor (14) through the air supply pipe (11). The air supply pipe (11) is connected to a backwashing mechanism. An oil collection tank (15) is opened on the upper part of the separation zone (4) away from the aeration zone (3). The opening height of the oil collection tank (15) is higher than the normal liquid level of the separation zone (4).

2. The energy-saving ceramic orifice plate type micro-nano bubble oil-water separator according to claim 1, characterized in that: The backwashing mechanism includes a pulse air pipe (7) located below the ceramic microporous plate (6). The pulse air pipe (7) is provided with nozzles (8) spaced apart. The outlet direction of the nozzles (8) faces the lower surface of the ceramic microporous plate (6). There are multiple sets of pulse air pipes (7). All sets of pulse air pipes (7) are connected to the air supply pipe (11). A three-way valve (10) is installed between the air supply pipe (11) and the pulse air pipe (7).

3. The energy-saving ceramic perforated plate type micro-nano bubble oil separator as described in claim 1, characterized in that: The surface of the ceramic microporous plate (6) is covered with a nano titanium dioxide coating. The upper part of the filter plate (1) is connected to a water pipe (5). The bottom end of the water pipe (5) is located below the aeration zone (3). A weir plate (16) is fixedly connected between the aeration zone (3) and the separation zone (4).

4. The energy-saving ceramic orifice plate type micro-nano bubble oil-water separator according to claim 2, characterized in that: The gas supply pipe (11) is provided with a Venturi suction pipe (12) and a gas flow meter (13) in sequence.

5. The energy-saving ceramic orifice plate type micro-nano bubble oil-water separator according to claim 2, characterized in that: A pulse valve (9) is fixedly installed on the pulse air pipe (7).

6. The energy-saving ceramic orifice plate type micro-nano bubble oil-water separator according to claim 2, characterized in that: The three-way valve (10) has a first interface (101), a second interface (102) and a third interface (103), respectively. The gas supply pipe (11) is connected to the first interface (101) and the second interface (102), respectively. The third interface (103) is connected to the pulse gas pipe (7).

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