A purification device for recovering waste oil in an oil refinery wastewater treatment system

Abstract

The application discloses a purification device for recovering dirty oil in an oil refining sewage treatment system and relates to the technical field of dirty oil recovery and purification. The application comprises a purification device body, wherein a mixing mechanism and a layering mechanism are arranged in the purification device body; the layering mechanism comprises a bubble generating plate arranged in the purification device body, and a bubble generator is arranged on one side of the purification device body and connected with the bubble generating plate. When the dirty oil is purified, the contact and mixing between the bubbles and the dirty oil can be enhanced by adjusting the angle of the mixing plate. When the mixing plate is inclined upward, the bubbles can be helped to rise, the flow of the dirty oil is promoted, and the contact between the bubbles and the dirty oil is enhanced. When the mixing plate is inclined downward, the rolling and stirring of the dirty oil and the bubbles are better promoted, the separation is further promoted, and thus the recovery and purification effect of the dirty oil is improved.

Description

Technical Field

[0001] This invention relates to the technical field of waste oil recovery and purification equipment, specifically to a purification device for recovering waste oil in an oil refinery wastewater treatment system. Background Technology

[0002] Petroleum, also known as crude oil, is a brownish-black, flammable, viscous liquid extracted from deep underground. It is mainly a mixture of various alkanes, cycloalkanes, and aromatic hydrocarbons. It is a mixture formed by ancient marine or lake organisms through a long period of evolution. Like coal, it is a fossil fuel. Petroleum is mainly used as fuel oil and gasoline. Fuel oil and gasoline constitute one of the most important primary energy sources in the world today. Petroleum is also a raw material for many chemical industrial products such as solutions, fertilizers, pesticides, and plastics. During the petroleum processing, a lot of oil pollution is generated. During the flushing and cleaning process in oil refineries, pollutants containing oil pollution are washed away. Wastewater and impurities contain a large amount of oil pollution. If discharged directly, it will have a great adverse impact on the environment.

[0003] Patent application (CN201810033051.2) discloses an oil pollution treatment device for petroleum refining, comprising a separation box. A first base is fixedly connected to the surface of the separation box, and a water pump is fixedly connected to the surface of the first base. An inlet pipe is fixedly connected to the inlet end of the water pump, and a first outlet pipe is fixedly connected to the outlet end of the water pump. One end of the first outlet pipe passes through and extends into the interior of the separation box. A second base is fixedly connected to the surface of the separation box, and a motor is fixedly connected to the surface of the second base. In this oil pollution treatment device for petroleum refining, when the first filter screen needs to be replaced, the first and second fixing bolts are opened, allowing the first filter screen to slide along the inner wall of the chute and out of the filter box. This achieves the effect of facilitating the disassembly and replacement of the first filter screen, thereby effectively solving the problem that general oil pollution treatment devices are not convenient for removing oil stains from impurities, and that oil stains remain after impurities are discharged, which to some extent pollutes the environment.

[0004] The patent and existing technologies have the following technical problems in practical use:

[0005] During recycling and purification, multi-stage filters are often used to filter the sludge. However, due to the size of the mesh, the sludge may contain impurities that can cause blockages during filtration. When using the air flotation method, the air bubbles cannot mix evenly with the sludge due to the different viscosity of the sludge. Summary of the Invention

[0006] The purpose of this invention is to provide a purification device for recovering waste oil in an oil refinery wastewater treatment system in order to solve the above problems.

[0007] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0008] A purification device for recovering waste oil in an oil refinery wastewater treatment system includes a purification device body, wherein a mixing mechanism and a stratification mechanism are provided inside the purification device body.

[0009] The layered mechanism includes a bubble generating plate disposed inside the purification device body, and a bubble generator is disposed on one side of the purification device body, the bubble generator being connected to the bubble generating plate.

[0010] The mixing mechanism includes a mixing cylinder disposed inside the main body of the purification device, mixing frames disposed on both sides of the mixing cylinder, mounting components fixedly installed on one side of the mixing frame, four sets of mounting components symmetrically arranged, and a mixing plate fixedly installed between the mounting components. The mixing plate has a certain degree of toughness, and a mounting plate is disposed between the interior of the mixing frame. The mounting plate can slide between the mixing frames, and the mounting plate is located on one side of the mixing plate.

[0011] The mounting plate has a sliding plate inside, and the sliding plate has a pressure detector inside. The sliding plate can move horizontally between the inner walls of the mounting plate.

[0012] Furthermore, an adjusting rod is rotatably installed inside the mixing cylinder. The surface of the adjusting rod is provided with a spiral groove. An adjusting ring is slidably installed on the adjusting rod through the spiral groove. A connecting rod is fixedly installed on the surface of the adjusting ring. Two sets of connecting rods are symmetrically arranged.

[0013] Furthermore, the surface of the mixing cylinder is provided with a sliding groove, and two sets of sliding grooves are symmetrically arranged. The connecting rod is fixedly connected to the mounting plate through the sliding groove, and a connecting spring is sleeved on the surface of the adjusting rod. The connecting spring is fixedly connected to the adjusting ring.

[0014] Furthermore, an addition box is fixedly installed on one side of the purification device body, an addition pump is installed inside the addition box, an addition pipe is fixedly installed at the output end of the addition pump, the addition pipe is fixedly connected to the purification device body, and the pressure detector is electrically connected to the addition pump.

[0015] Furthermore, an electric telescopic rod is fixedly installed inside the mounting plate, and the output end of the electric telescopic rod is fixedly connected to the sliding plate, which is slidably connected to the mounting plate.

[0016] Furthermore, a first drive rod is fixedly installed on the top of the mixing cylinder, and a second drive rod is fixedly installed on the top of the adjusting rod. Both the first drive rod and the second drive rod extend through and above the body of the purification device, and connecting gears are fixedly installed on the surfaces of both the first drive rod and the second drive rod.

[0017] Furthermore, a motor frame is fixedly installed on the top of the purification device body, a drive motor is fixedly installed on the top of the motor frame, a drive gear is fixedly installed on the output end of the drive motor, two sets of drive gears are symmetrically arranged, the drive gears are meshed with connecting gears, and the dimensions of the drive gears and connecting gears are staggered.

[0018] Furthermore, a support base is fixedly installed on the top of the purification device body, and the bubble generator is fixedly connected to the support base.

[0019] Furthermore, an oil storage tank is fixedly installed on one side of the purification device body, an electric telescopic pipe is fixedly installed on the top of the purification device body, an oil drain pipe is fixedly connected between the oil storage tank and the electric telescopic pipe, and a drain pipe is fixedly connected to one side of the purification device body.

[0020] Furthermore, a filter frame is fixedly installed between the inner walls of the mixing frame.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The present invention, through the mixing mechanism, enhances the contact and mixing between bubbles and sludge when purifying sludge by adjusting the angle of the mixing plate. When the mixing plate is tilted upward, it helps the bubbles rise, promotes the flow of sludge, and enhances the contact between bubbles and oil. When the mixing plate is tilted downward, it can better promote the tumbling and stirring of oil and bubbles, further promoting separation, thereby improving the recycling and purification effect of sludge.

[0023] 2. By continuously changing the tilt angle of the mixing plate, this invention can help the bubbles to be evenly distributed throughout the entire purification device. At the same time, the reciprocating motion of the mounting plate allows the bubbles to come into contact with the oil particles multiple times at different angles, which helps the oil to adhere better and float, reduces the immersion time of the bubbles in the water, and improves the separation effect.

[0024] 3. This invention uses a pressure detector to continuously monitor the resistance experienced by the mixing plate. When the viscosity of the oil inside the purification device is high, the resistance increases. When the resistance exceeds a threshold, the pressure detector controls the pump inside the addition tank to deliver the demulsifier through the addition pipe into the purification device, thereby mixing the oil and sludge inside and reducing the emulsification of the oil, allowing the oil droplets to quickly aggregate and separate. At the same time, when the electric telescopic rod pushes the sliding plate out, the tilt angle of the mixing plate will be increased or decreased. For high-viscosity oil, increasing the tilt angle of the mixing plate improves the mixing effect, thereby increasing the contact area and mixing efficiency between the oil and air bubbles. Conversely, for low-viscosity oil, the tilt angle can be reduced to reduce the stirring force. Attached Figure Description

[0025] Figure 1 This is an overall schematic diagram of the invention;

[0026] Figure 2 This is a schematic diagram of the overall main view of the present invention;

[0027] Figure 3 This is the present invention. Figure 3 Schematic diagram at point A in the middle;

[0028] Figure 4 This is a schematic diagram of the interior of the purification device body of the present invention;

[0029] Figure 5 This is a schematic diagram of the hybrid frame of the present invention;

[0030] Figure 6 This is a schematic diagram of the mounting plate of the present invention;

[0031] Figure 7 This is a schematic diagram of the pressure detector of the present invention;

[0032] Figure 8 This is a schematic diagram of the mixing cylinder of the present invention;

[0033] Figure 9 This is a schematic diagram of the spiral groove of the present invention.

[0034] Reference numerals in the attached drawings: 1. Purification device body; 2. Mixing mechanism; 201. Mixing cylinder; 202. Mixing frame; 203. Mounting component; 204. Mixing plate; 205. Mounting plate; 206. Sliding plate; 207. Pressure detector; 3. Layering mechanism; 301. Bubble generating plate; 302. Bubble generator; 4. Adjusting rod; 5. Spiral groove; 6. Adjusting ring; 7. Connecting rod; 8. Slide groove; 9. Connecting spring; 10. Adding box; 11. Adding pipe; 12. Electric telescopic rod; 13. First drive rod; 14. Second drive rod; 15. Connecting gear; 16. Motor frame; 17. Drive motor; 18. Drive gear; 19. Support base; 20. Oil storage tank; 21. Filter frame; 22. Oil drain pipe; 23. Drain pipe. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0036] A preferred embodiment of the present invention, a purification device for recovering waste oil in an oil refinery wastewater treatment system, will be described in detail below.

[0037] Example 1, as Figures 1-9 As shown, it includes a purification device body 1, and the purification device body 1 is provided with a mixing mechanism 2 and a layering mechanism 3.

[0038] The layered mechanism 3 includes a bubble generating plate 301 disposed inside the purification device body 1, and a bubble generator 302 disposed on one side of the purification device body 1, which is connected to the bubble generating plate 301.

[0039] The mixing mechanism 2 includes a mixing cylinder 201 disposed inside the purification device body 1. Mixing frames 202 are disposed on both sides of the mixing cylinder 201. An installation component 203 is fixedly installed on one side of the mixing frame 202. Four sets of installation components 203 are symmetrically arranged. A mixing plate 204 is fixedly installed between the installation components 203. The mixing plate 204 has a certain toughness. An installation plate 205 is disposed between the interiors of the mixing frames 202. The installation plate 205 can slide between the mixing frames 202. The installation plate 205 is located on one side of the mixing plate 204.

[0040] The mounting plate 205 is provided with a sliding plate 206 inside, and a pressure detector 207 is provided inside the sliding plate 206. The sliding plate 206 can move horizontally between the inner walls of the mounting plate 205.

[0041] First, the staff injects the waste oil to be recycled and purified into the body 1 of the purification device. Then, the staff starts the bubble generator 302. The bubble generator 302 injects bubbles into the body 1 of the purification device through the bubble generating plate 301, so that the waste oil inside comes into contact with it. At the same time, the staff controls the mixing cylinder 201 to drive the mixing frame 202 to rotate, so that the waste oil inside the body 1 of the purification device comes into contact with and mixes with the bubbles generated by the bubble generating plate 301. The small bubbles generated by the bubble generating plate 301 come into contact with the waste oil particles and make them float to the top.

[0042] Meanwhile, in the initial stage of sludge and oil purification, the staff controls the installation plate 205 to slide inside the mixing frame 202. When the installation plate 205 inside the mixing frame 202 moves upward, the mixing plate 204 has a certain toughness. When the mixing frame 202 moves upward, the mixing plate 204 is tilted downward. The mixing plate 204 will generate more agitation on the sludge and oil, promote the distribution of bubbles, and distribute the bubbles evenly in the oil, causing the oil to float to the surface.

[0043] In the later stage of oily waste purification, the oil has begun to rise and accumulate on the water surface. At this time, the control plate 205 moves downward, while the mixing plate 204 tilts upward. The mixing effect of the mixing plate 204 is weakened. At the same time, due to the upward tilt, the oil can float to the water surface more concentratedly and will not be dispersed again by the mixing plate 204, so that the oily waste forms a clear oil layer. After purification is completed, the staff can use the device to extract the purified oil layer and the clean water layer separately.

[0044] By adjusting the angle of the mixing plate 204 during the purification of sludge and oil using the mixing mechanism 2, the contact and mixing between the bubbles and the sludge and oil can be enhanced. When the mixing plate 204 is tilted upward, it can help the bubbles rise, promote the flow of sludge and oil, and enhance the contact between the bubbles and the oil. When the mixing plate 204 is tilted downward, it can better promote the rolling and stirring of oil and bubbles, further promote separation, and thus improve the recycling and purification effect of sludge and oil.

[0045] Example 2, as Figures 1-9 As shown, an adjusting rod 4 is rotatably installed inside the mixing cylinder 201. The surface of the adjusting rod 4 is provided with a spiral groove 5. An adjusting ring 6 is slidably installed on the adjusting rod 4 through the spiral groove 5. A connecting rod 7 is fixedly installed on the surface of the adjusting ring 6. Two sets of connecting rods 7 are symmetrically arranged. A sliding groove 8 is provided on the surface of the mixing cylinder 201. Two sets of sliding grooves 8 are symmetrically arranged. The connecting rod 7 is fixedly connected to the mounting plate 205 through the sliding groove 8. A connecting spring 9 is sleeved on the surface of the adjusting rod 4. The connecting spring 9 is fixedly connected to the adjusting ring 6.

[0046] When the adjusting rod 4 rotates, the adjusting ring 6 can move spirally along the spiral groove 5 opened on the surface of the adjusting rod 4. The adjusting ring 6 will squeeze the connecting spring 9 under the movement. At the same time, since the end of the spiral groove 5 is set to be vertical, when the adjusting ring 6 moves to the vertical position of the spiral groove 5 under the drive of the rotation of the adjusting rod 4, the adjusting ring 6 will be pushed back to its original position by the elastic potential energy of the connecting spring 9, so that it will reciprocate. At this time, the adjusting ring 6 can drive the mounting plate 205 to reciprocate through the connecting rod 7. Then, under the movement of the mounting plate 205, the mixing plate 204 will continue to tilt upward and downward, thereby mixing the sludge and oil in the purification device body 1.

[0047] By continuously changing the tilt angle of the mixing plate 204, bubbles can be evenly distributed throughout the entire purification device body 1. At the same time, the reciprocating motion of the mounting plate 205 allows bubbles to come into contact with oil particles multiple times at different angles, which helps the oil particles to adhere and float better, reduces the immersion time of bubbles in water, and improves the separation effect.

[0048] Example 3, as Figures 1-7 As shown, an addition box 10 is fixedly installed on one side of the purification device body 1. An addition pump is installed inside the addition box 10. An addition pipe 11 is fixedly installed at the output end of the addition pump. The addition pipe 11 is fixedly connected to the purification device body 1. The pressure detector 207 is electrically connected to the addition pump.

[0049] The staff first injects demulsifier into the addition tank 10. At the same time, the pressure detector 207 detects the viscosity of the oil inside the purification device body 1. When the viscosity is high, the addition pump is controlled to deliver demulsifier into the purification device body 1 through the addition pipe 11. An electric telescopic rod 12 is fixedly installed inside the mounting plate 205. The output end of the electric telescopic rod 12 is fixedly connected to the sliding plate 206. The sliding plate 206 is slidably connected to the mounting plate 205.

[0050] The pressure detector 207 continuously detects the resistance experienced by the mixing plate 204. When the viscosity of the oil inside the purification device body 1 is high, the resistance will increase. When the threshold is exceeded, the pressure detector 207 will control the addition pump inside the addition tank 10 to deliver the demulsifier inside to the purification device body 1 through the addition pipe 11, thereby mixing the oil inside and reducing the emulsification of the oil, so that the oil droplets can quickly aggregate and separate. At the same time, when the electric telescopic rod 12 pushes out the sliding plate 206, the tilt angle of the mixing plate 204 will be larger or smaller. For high viscosity oil, increasing the tilt angle of the mixing plate 204 improves the mixing effect, thereby increasing the contact area and mixing efficiency between the oil and the air bubbles. Conversely, for low viscosity oil, the tilt angle can be reduced to reduce the stirring force.

[0051] Example 4, as Figures 1-4 As shown, a first drive rod 13 is fixedly installed on the top of the mixing cylinder 201, and a second drive rod 14 is fixedly installed on the top of the adjusting rod 4. Both the first drive rod 13 and the second drive rod 14 extend through and above the purification device body 1. Connecting gears 15 are fixedly installed on the surfaces of both the first drive rod 13 and the second drive rod 14. A motor frame 16 is fixedly installed on the top of the purification device body 1, and a drive motor 17 is fixedly installed on the top of the motor frame 16. A drive gear 18 is fixedly installed at the output end of the drive motor 17. Two sets of drive gears 18 are symmetrically arranged. The drive gears 18 mesh with the connecting gears 15. The two sets of drive gears 18 and connecting gears 15 have different dimensions.

[0052] When the drive motor 17 drives the drive gear 18 to rotate, the drive gear 18 can mesh with the connecting gear 15 and drive the connecting gear 15 to rotate synchronously. Since the two sets of drive gears 18 and connecting gears 15 have different dimensions, when the connecting gear 15 drives the first drive rod 13 and the second drive rod 14 to rotate, the first drive rod 13 and the second drive rod 14 can then drive the mixing cylinder 201 and the adjusting rod 4 to rotate.

[0053] Example 5, as Figures 1-9As shown, a support base 19 is fixedly installed on the top of the purification device body 1, a bubble generator 302 is fixedly connected to the support base 19, an oil storage tank 20 is fixedly installed on one side of the purification device body 1, an electric telescopic pipe is fixedly installed on the top of the purification device body 1, an oil drain pipe 22 is fixedly connected between the oil storage tank 20 and the electric telescopic pipe, a drain pipe 23 is fixedly connected to one side of the purification device body 1, and a filter frame 21 is fixedly installed between the inner walls of the mixing frame 202.

[0054] After the sludge and oil are purified, the electric telescopic tube extends and the external water pump draws the purified sludge from the inside of the purification device 1 into the oil storage tank 20 through the oil drain pipe 22. After the separated oil is drawn out, the drain pipe 23 is opened to discharge the purified water. The filter frame 21 can collect the impurities that have settled in the sludge and oil during rotation.

[0055] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A purification device for recovering waste oil in an oil refinery wastewater treatment system, comprising a purification device body (1), characterized in that, The purification device body (1) is internally provided with a mixing mechanism (2) and a layered mechanism (3); The layered mechanism (3) comprises a bubble generating plate (301) arranged in the interior of the purification device body (1), and one side of the purification device body (1) is provided with a bubble generator (302), which is connected with the bubble generating plate (301); The mixing mechanism (2) comprises a mixing cylinder (201) arranged in the interior of the purification device body (1), a regulating rod (4) is rotatably arranged in the interior of the mixing cylinder (201), mixing frames (202) are arranged on both sides of the mixing cylinder (201), a mounting piece (203) is fixedly arranged on one side of the mixing frame (202), four groups of mounting pieces (203) are symmetrically arranged, a mixing plate (204) is fixedly arranged between the mounting pieces (203), the mixing plate (204) has a certain toughness, an installation plate (205) is arranged between the mixing frames (202), the installation plate (205) can reciprocate in the mixing frames (202), and the installation plate (205) is located on one side of the mixing plate (204); The interior of the installation plate (205) is provided with a sliding plate (206), the interior of the sliding plate (206) is provided with a pressure detector (207), and the sliding plate (206) can move horizontally between the inner walls of the installation plate (205); The top of the mixing cylinder (201) is fixedly provided with a first driving rod (13), the top of the regulating rod (4) is fixedly provided with a second driving rod (14), the first driving rod (13) and the second driving rod (14) penetrate and extend above the purification device body (1), the surfaces of the first driving rod (13) and the second driving rod (14) are fixedly provided with connecting gears (15), and the first driving rod (13) and the second driving rod (14) can drive the mixing cylinder (201) and the regulating rod (4) to rotate; The top of the purification device body (1) is fixedly provided with a motor frame (16), the top of the motor frame (16) is fixedly provided with a driving motor (17), the output end of the driving motor (17) is fixedly provided with a driving gear (18), the driving gear (18) is symmetrically provided with two groups, the driving gear (18) and the connecting gear (15) are in meshing connection, and the sizes of the driving gear (18) and the connecting gear (15) are arranged in a staggered manner.

2. The purification device for recovering waste oil of an oil refinery wastewater treatment system according to claim 1, characterized by The surface of the regulating rod (4) is provided with a spiral groove (5), the regulating ring (6) is slidably arranged on the regulating rod (4) through the spiral groove (5), the surface of the regulating ring (6) is fixedly provided with a connecting rod (7), and the connecting rod (7) is symmetrically provided with two groups.

3. The purification device for recovering waste oil of an oil refinery wastewater treatment system according to claim 2, characterized by The surface of the mixing cylinder (201) is provided with a sliding groove (8), the sliding groove (8) is symmetrically provided with two groups, the connecting rod (7) is fixedly connected with the installation plate (205) through the sliding groove (8), the surface of the regulating rod (4) is sleeved with a connecting spring (9), and the connecting spring (9) is fixedly connected with the regulating ring (6). The surface of the mixing cylinder (201) is provided with a sliding groove (8), the sliding groove (8) is symmetrically provided with two groups, the connecting rod (7) is fixedly connected with the installation plate (205) through the sliding groove (8), the surface of the regulating rod (4) is sleeved with a connecting spring (9), and the connecting spring (9) is fixedly connected with the regulating ring (6).

4. The purification device for recovering waste oil of an oil refinery wastewater treatment system according to claim 1, characterized by The side of the purification device body (1) is fixedly installed with an adding box (10), the inside of the adding box (10) is provided with an adding pump, the output end of the adding pump is fixedly installed with an adding pipe (11), the adding pipe (11) is fixedly communicated with the purification device body (1), and the pressure detector (207) is electrically connected with the adding pump.

5. The purification device for recovering waste oil of an oil refinery wastewater treatment system according to claim 1, characterized by The inside of the mounting plate (205) is fixedly installed with an electric telescopic rod (12), the output end of the electric telescopic rod (12) is fixedly connected with a sliding plate (206), and the sliding plate (206) is slidingly connected with the mounting plate (205).

6. The purification device for recovering waste oil of an oil refinery wastewater treatment system according to claim 1, characterized by The top of the purification device body (1) is fixedly installed with a supporting seat (19), and the bubble generator (302) is fixedly connected with the supporting seat (19).

7. The purification device for recovering waste oil of an oil refinery wastewater treatment system according to claim 1, characterized by The side of the purification device body (1) is fixedly installed with an oil storage cylinder (20), the top of the purification device body (1) is fixedly installed with an electric telescopic pipe, and the oil storage cylinder (20) and the electric telescopic pipe are fixedly communicated with an oil discharge pipe (22), and the side of the purification device body (1) is fixedly communicated with a drain pipe (23).

8. The purification device for recovering waste oil of an oil refinery wastewater treatment system according to claim 1, characterized by The inside wall of the mixing frame (202) is fixedly installed with a filter frame (21).

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