A device for separating oil-containing wastewater

Abstract

The application relates to a separation device for oil-containing wastewater, which comprises a treatment box, one end of the treatment box is provided with an oil suction mechanism, a treatment cavity is concavely arranged in the treatment box, and a waste oil recovery assembly is arranged in the treatment cavity. Through cooperation of an automatic control component and a switch component, the opening and closing of the openings of an oil discharge channel, a liquid discharge channel, a connecting pipeline and a liquid conveying pipeline are automatically controlled, so that the liquid level is automatically controlled, oil liquid is discharged from the oil discharge channel, the possibility of wastewater being discharged through the oil discharge channel is reduced, and the mixed wastewater of the oil liquid discharged through the oil discharge channel is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of oil-water separation, and particularly relates to a separation device for oily wastewater. BACKGROUND

[0002] With the increase of industrial production and living activities, the discharge amount of oily wastewater (such as petrochemical, mechanical processing, food processing and catering industry wastewater) continues to grow. Such wastewater contains suspended oil, emulsified oil and solid impurities, and direct discharge will pollute water bodies, block pipe networks, and even threaten the ecological environment. At present, although certain progress has been made in the separation technology for oily wastewater, the existing devices still have significant defects in efficiency, adaptability and operation and maintenance cost. Specifically, oil-water preliminary separation needs to rely on various mechanical structures and electric control devices, and even parameter adjustment can realize oil and water detection and liquid level adjustment, which leads to over-reliance on electronic equipment such as sensors and single-chip microcomputers, resulting in low device reliability and high maintenance cost. Therefore, a separation device for oily wastewater is proposed. SUMMARY

[0003] This section aims to summarize some aspects of the embodiments of the application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, abstract and title, and such simplifications or omissions cannot be used to limit the scope of the application.

[0004] In view of the following technical problems in the prior art: oil-water preliminary separation needs to rely on various mechanical structures and electric control devices, and even parameter adjustment can realize oil and water detection and liquid level adjustment, which leads to over-reliance on electronic equipment such as sensors and single-chip microcomputers, resulting in low device reliability and high maintenance cost.

[0005] To solve the above technical problems, the application provides the following technical scheme: a separation device for oily wastewater, comprising a treatment box, one end of the treatment box is provided with an oil suction mechanism, a treatment cavity is concavely arranged in the treatment box, and a waste oil recovery assembly is arranged in the treatment cavity.

[0006] The waste oil recovery assembly comprises an automatic control component, a bubble mixing component and a switch component, the bubble mixing component is arranged at the top of a treatment cavity, and the bubble mixing component comprises a vertical cylinder, a bubble supply pipe, a circular cavity, a fixing frame, a disc and a bubble supply mechanism, the inner side of the top of the treatment cavity is provided with the disc, a plurality of fixing frames are uniformly arranged on the periphery of the disc, the fixing frames are fixedly connected with the inner wall of the treatment cavity, the inner bottom wall of the circular cavity is provided with a plurality of annular pipelines I, the bubble supply pipe is arranged in one of the fixing frames, the bubble supply pipe is connected with the annular pipeline I through a connecting pipeline, the annular pipeline I is uniformly provided with a plurality of bubble discharge pieces, the bubble discharge pieces extend from the top of the circular cavity, the bubble discharge piece comprises four branch pipelines, the four branch pipelines are arranged in a ring shape, a plurality of communication cylinders are uniformly arranged on the top of the disc, a vertical cylinder is arranged at the middle of the lower side of the disc, and the vertical cylinder is connected with an oil suction mechanism;

[0007] The top of the communication cylinder is provided with a mixing cover, the branch pipelines are arranged around the central axis of the communication cylinder, the bottom of the communication cylinder is communicated with the inner cavity of the circular cavity, the top of the communication cylinder is provided with a liquid discharge hole, the mixing cover covers the upper part of the branch pipelines, a spray head is arranged on the branch pipeline, and the spray head is inclined upward and faces the liquid discharge hole of the communication cylinder;

[0008] The orientation of the liquid discharge channel enables the waste water to mainly suck the water liquid from the part with less oil content at the bottom of the treatment cavity, reduces disturbance to the upper layer of water liquid, and reduces the re-mixing of the oil liquid and the water liquid.

[0009] The orientation of the oil discharge channel can only suck the oil liquid on the upper layer of the oil liquid layer, so that the entry of the water liquid is reduced.

[0010] As a preferred technical scheme of the oil-containing waste water separation device, the oil suction mechanism comprises a funnel table, a floating ball, a liquid suction cylinder and a connecting pipeline, the upper side of the funnel table is uniformly provided with three floating balls, the middle of the funnel table is provided with the liquid suction cylinder, the liquid suction cylinder is connected with the connecting pipeline, the connecting pipeline extends into the inner side of the treatment cavity, the end of the connecting pipeline away from the liquid suction cylinder is connected with the vertical cylinder, and the connecting pipeline is provided with a liquid suction pump.

[0011] The liquid suction pump sucks the waste water containing oil liquid through the liquid suction cylinder, the waste water passes through the connecting pipeline, the vertical cylinder and then the disc to reach the circular cavity, the waste water is dispersed to the periphery of the mixing cover through the circular cavity, the communication cylinder and the liquid discharge hole, and the waste water enters the treatment cavity.

[0012] As a preferred technical scheme of the oil-containing wastewater separation device, the automatic control component comprises a top plate, air tubes, a center column and a float component, the float component is connected with a switch component through a pressing frame, a mounting groove is concaved at the top of the processing cavity, the mounting groove is provided with the top plate, a plurality of air tubes are arranged on the top plate, the middle part of the lower side of the top plate is provided with the center column, the center column movably sleeves the float component;

[0013] The top plate serves as a support for fixing the position of the center column.

[0014] As a preferred technical scheme of the oil-containing wastewater separation device, the switch component comprises a switch plate and a communication hole, a sliding groove is formed at the top of the processing cavity, an oil discharge channel is concaved at the top of one side of the sliding groove, a liquid discharge channel is concaved at the middle of one side of the sliding groove, the end of the liquid discharge channel close to the processing cavity is inclined downward to the inside of the processing cavity, the end of the oil discharge channel close to the processing cavity is inclined upward to the inside of the processing cavity, the top of the switch plate is provided with the communication hole, the communication hole is movably connected with the oil discharge channel, and the switch plate is slidably connected with the sliding groove.

[0015] The switch plate can close or open the openings of the oil discharge channel and the liquid discharge channel.

[0016] As a preferred technical scheme of the oil-containing wastewater separation device, the pressing frame comprises a control cylinder one, a control cylinder two, a movable rod, a spring one and a corrugated sleeve, one end of the movable rod is movably inserted with the control cylinder one, the other end of the movable rod is movably inserted with the control cylinder two, the spring one is sleeved on the outer side of the movable rod, one end of the spring one abuts against the control cylinder one, the spring one abuts against the control cylinder two, the corrugated sleeve is connected between the control cylinder two and the control cylinder one, the corrugated sleeve is sleeved on the movable rod, the control cylinder two and the switch plate form a triangle, and the control cylinder two is connected with the switch plate.

[0017] The spring one of the pressing frame extrudes the switch plate through the control cylinder two to always adhere to the wall surface of the sliding groove, so that the switch plate can close the oil discharge channel and the liquid discharge channel.

[0018] As a preferred technical scheme of the oil-containing wastewater separation device, the float component comprises a float one, a float two and a clamping groove, the clamping groove is concaved on the float two, the clamping groove clamps a U-shaped frame, the U-shaped frame is connected with the pressing frame, the float one movably sleeves a sliding block, and the float one is threadedly connected with the float two.

[0019] The relative positions of the float two and the float one can be adjusted by rotating the float one to adapt to different wastewater densities, when the wastewater density is too large, the length of the float one entering the float two is increased, so that the position of the float two is lowered, and vice versa.

[0020] As a preferred technical scheme of the oil-containing wastewater separation device, the float component is connected with a working frame, the lower end of the working frame extends into a vertical cylinder, the lower end of the vertical cylinder is concave with a communication opening, the bottom end of the working frame is provided with a plug two, and the plug two is movably connected with the inner side of the vertical cylinder.

[0021] The working frame is also pulled upward by the float one, when the liquid level in the treatment cavity rises too high, the working frame blocks the connecting pipeline with the plug two, and cuts off the communication between the connecting pipeline and the vertical cylinder.

[0022] As a preferred technical scheme of the oil-containing wastewater separation device, the bottom of the float one is provided with a bubble supply pipe, the top end of the working frame is provided with two clamping plates, and the connecting ring is clamped between the two clamping plates.

[0023] The cooperation between the clamping plates and the connecting ring connects the float one with the working frame.

[0024] As a preferred technical scheme of the oil-containing wastewater separation device, the bottom of the center column is provided with a sliding block, and the sliding block movably abuts against the float component.

[0025] The bottom of the center column is provided with a cylindrical cavity, the bottom of the center column is connected with a liquid delivery pipeline, two sliding grooves are symmetrically concave on the cylindrical cavity, a plug one is movably connected with the cylindrical cavity, two sliding blocks are symmetrically arranged on the plug one, and the cylindrical cavity is symmetrically concave with two sliding grooves, and the sliding blocks are correspondingly and movably connected with the sliding grooves.

[0026] During the descending process of the float one, the sliding blocks are extruded, and the plug one and the sliding blocks are descended, so that the liquid delivery pipeline is communicated with the sliding grooves, the liquid delivery pipeline discharges the liquid into the treatment cavity, and the liquid level in the treatment cavity rises to the normal level.

[0027] The oil-containing wastewater separation device has the following beneficial effects: through the cooperation of the automatic control component and the switch component, the opening and closing of the openings of the oil discharge channel, the liquid discharge channel, the connecting pipeline and the liquid delivery pipeline are automatically controlled, the liquid level height is automatically controlled through the mechanical mechanism, the liquid level height of the water and the oil in the treatment cavity is controlled without relying on the electric control device, so that the oil is discharged from the oil discharge channel, the possibility of discharging the wastewater through the oil discharge channel is reduced, and the wastewater mixed with the oil discharged from the oil discharge channel is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating labor. Among them:

[0029] Figure 1 This is a schematic diagram of the cross-sectional structure of the present invention;

[0030] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0031] Figure 3 This is a schematic diagram showing the positional relationship between the float and the work frame of the present invention;

[0032] Figure 4 This is a schematic diagram of the front structure of the disk of the present invention;

[0033] Figure 5 This is a schematic diagram showing the connection structure between the annular pipe and the bubble supply pipe of the present invention.

[0034] Figure 6 This is a three-dimensional structural diagram of the float II of the present invention;

[0035] Figure 7 This is a schematic diagram of the front structure of the top plate of the present invention;

[0036] Figure 8 This is a schematic diagram of the oil suction mechanism of the present invention;

[0037] Figure 9 For the present invention Figure 1 A partially enlarged structural diagram of part A in the middle;

[0038] Figure 10 For the present invention Figure 1 A partially enlarged structural diagram of section B;

[0039] Figure 11 For the present invention Figure 1 A magnified schematic diagram of part C in the middle section;

[0040] Figure 12 This is a schematic diagram illustrating the mixing and turbulence generated when the bubble flow and wastewater flow meet, according to the present invention.

[0041] Reference numerals: 1. Processing box; 2. Processing chamber; 3. Top plate; 4. Vent; 5. Central column; 6. Float one; 7. Float two; 8. Working frame; 9. Sliding block; 10. U-shaped frame; 11. Control cylinder one; 12. Control cylinder two; 13. Sliding groove; 14. Connecting hole; 15. Oil drain channel; 16. Switch plate; 17. Liquid drain channel; 18. Fixing frame; 19. Disc; 20. Funnel platform; 21. Triangular plate; 22. Float; 23. Liquid suction cylinder; 24. Connecting pipe; 5. Connecting ring; 26. Snap-fit ​​plate; 27. Sliding groove; 28. Infusion pipeline; 29. ​​Plug 1; 30. Elastic rope; 31. Sealing door; 32. Workbench; 33. Mixing cover; 34. Annular pipeline 1; 35. Bubble supply pipe; 36. Slot; 37. Vertical cylinder; 38. Plug 2; 39. Connecting opening; 41. Movable rod; 42. Spring 1; 43. Corrugated sleeve; 45. Connecting cylinder; 46. Drain hole; 48. Branch pipeline; 49. Circular cavity; 50. Control pipeline. Detailed Implementation

[0042] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0043] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0044] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0045] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0046] like Figures 1-12 As shown, the present invention proposes an oily wastewater separation device, including a treatment tank 1, an oil suction mechanism at one end of the treatment tank 1, a treatment chamber 2 recessed inside the treatment tank 1, and a waste oil recovery component inside the treatment chamber 2.

[0047] The bottom of the processing cavity 2 is provided with a funnel table 20, sludge is settled on the funnel table 20, and an electromagnetic valve is arranged on the liquid control pipeline to control the discharge of water in the processing cavity 2.

[0048] The waste oil recovery assembly includes an automatic control component, a bubble mixing component, and a switch component. The bubble mixing component is arranged at the top of the processing cavity 2 and includes a vertical cylinder 37, a bubble supply pipe 35, a circular cavity 49, a fixing frame 18, a disc 19, and a bubble supply mechanism. The inner side of the top of the processing cavity 2 is provided with the disc 19, the periphery of the disc 19 is uniformly provided with a plurality of fixing frames 18, the fixing frames 18 are fixedly connected with the inner wall of the processing cavity 2, the inside of the disc 19 is concavely provided with the circular cavity 49, the inner bottom wall of the circular cavity 49 is provided with a plurality of annular pipelines I 34, one of the fixing frames 18 is arranged with the bubble supply pipe 35, the bubble supply pipe 35 is connected with the annular pipeline I 34 through a connecting pipeline, the annular pipeline I 34 is uniformly provided with a plurality of bubble discharge pieces, the bubble discharge pieces extend from the top of the circular cavity 49, the bubble discharge pieces include four branch pipelines 48, the four branch pipelines 48 are arranged in a ring shape, the top of the disc 19 is uniformly provided with a plurality of communication cylinders 45, the middle of the lower side of the disc 19 is provided with the vertical cylinder 37, and the vertical cylinder 37 is connected with an oil suction mechanism.

[0049] The top of the communication cylinder 45 is provided with a mixing cover 33, the branch pipelines 48 are arranged around the central axis of the communication cylinder 45, the bottom of the communication cylinder 45 is communicated with the inner cavity of the circular cavity 49, the top of the communication cylinder 45 is provided with a liquid discharge hole 46, the mixing cover 33 covers the upper part of the branch pipelines 48, the branch pipelines 48 are provided with nozzles, and the nozzles are inclined upward and face the liquid discharge hole 46 of the communication cylinder 45.

[0050] Through the use of the bubble mixing component, the mixing cover blocks the flow direction of waste water and bubbles and weakens kinetic energy, so that oil liquid and water liquid do not flow upward violently, the kinetic energy of the upward flow of water liquid and waste water is reduced, the two layers of oil liquid and water liquid maintain a stable stratified state, the re-mixing of water liquid and oil liquid is reduced, waste water is dispersed and discharged through the liquid discharge hole, the branch pipelines spray bubble flow, the bubble flow is sprayed toward the top end of the communication cylinder, the waste water flow and the bubble flow encounter and merge, the blocking of the mixing cover changes the flow direction of the waste water flow and the bubble flow, vortexes are generated, the waste water and the bubbles are fully mixed, the bubbles fully contact the oil droplets and suspended solids to form air floaters, oil-water separation is accelerated, and two layers of water liquid and oil liquid are formed.

[0051] The direction of the liquid discharge channel 17 is such that waste water mainly absorbs water liquid from the part with less oil content at the bottom of the processing cavity 2, and the disturbance to the upper layer of water liquid is reduced, and the re-mixing of oil liquid and water liquid is reduced.

[0052] The oil outlet channel 15 can only suck the oil on the upper layer of the oil layer, so that the water on the bottom of the oil layer enters or reduces the entry of water.

[0053] The oil suction mechanism comprises a funnel table 21, a floating ball 22, a liquid suction cylinder 23 and a connecting pipeline 24, the upper side of the funnel table 21 is uniformly provided with three floating balls 22, the middle part of the funnel table 21 is provided with the liquid suction cylinder 23, the liquid suction cylinder 23 is connected with the connecting pipeline 24, the connecting pipeline 24 extends into the inner side of the processing cavity 2, the end of the connecting pipeline 24 away from the liquid suction cylinder 23 is connected with a vertical cylinder 37, and the connecting pipeline 24 is provided with a liquid pumping pump.

[0054] The liquid pumping pump sucks the wastewater containing oil through the liquid suction cylinder 23, the wastewater passes through the connecting pipeline 24, the vertical cylinder 37 and then the disc 19 to reach the circular cavity 49, the wastewater is dispersed to the periphery of the mixing cover 33 through the communication cylinder 45 and the liquid discharge hole 46, and the wastewater enters the middle and bottom of the processing cavity 2.

[0055] The automatic control component comprises a top plate 3, an air cylinder 4, a center column 5 and a float component, the float component is connected with a switch component through a pressing frame, the top of the processing cavity 2 is recessed with a mounting groove, the mounting groove is provided with the top plate 3, the top plate 3 is provided with a plurality of air cylinders 4, the middle part of the lower side of the top plate 3 is provided with the center column 5, and the center column 5 movably sleeves the float component.

[0056] The top plate 3 serves as a support for fixing the position of the center column 5.

[0057] The switch component comprises a switch plate 16 and a communication hole 14, the top of the processing cavity 2 is provided with a sliding groove 13, the top of one side of the sliding groove 13 is recessed with an oil outlet channel 15, the middle part of one side of the sliding groove 13 is recessed with a liquid discharge channel 17, the end of the liquid discharge channel 17 close to the processing cavity 2 is inclined downward to the inside of the processing cavity 2, the end of the oil outlet channel 15 close to the processing cavity 2 is inclined upward to the inside of the processing cavity 2, the top of the switch plate 16 is provided with the communication hole 14, the communication hole 14 is movably connected with the oil outlet channel 15, and the switch plate 16 is slidably connected with the sliding groove 13.

[0058] The switch plate 16 can close or open the openings of the oil outlet channel 15 and the liquid discharge channel 17.

[0059] The extrusion frame comprises a control cylinder 11, a control cylinder 12, a movable rod 41, a spring 42 and a corrugated sleeve 43, one end of the movable rod 41 is movably inserted with the control cylinder 11, the other end of the movable rod 41 is movably inserted with the control cylinder 12, the outer side of the movable rod 41 is sleeved with the spring 42, one end of the spring 42 abuts against the control cylinder 11, the spring 42 abuts against the control cylinder 12, the corrugated sleeve 43 is connected between the control cylinder 12 and the control cylinder 11, the corrugated sleeve 43 is sleeved outside the movable rod 41, the control cylinder 12 and the switch plate 16 form a triangle, the control cylinder 12 is connected with the switch plate 16.

[0060] The spring 42 of the extrusion frame extrudes the switch plate 16 through the control cylinder 12 to always adhere to the wall surface of the sliding groove 13, so that the switch plate 16 can close the oil discharge channel 15 and the liquid discharge channel 17.

[0061] The float component comprises a float 6, a float 7 and a clamping groove 36, the clamping groove 36 is recessed on the float 7, the U-shaped frame 10 is clamped in the clamping groove 36, the U-shaped frame 10 is connected with the extrusion frame, the float 6 is movably sleeved with the sliding block 9, the float 6 is threadedly connected with the float 7.

[0062] The relative positions of the float 7 and the float 6 can be adjusted by rotating the float 6 to adapt to different wastewater densities, when the wastewater density is too large, the length of the float 6 entering the float 7 is increased, so that the position of the float 7 is lowered.

[0063] The working frame 8 is connected to the float component, the lower end of the working frame 8 extends into the vertical cylinder 37, the lower end of the vertical cylinder 37 is recessed with a communication opening 39, the bottom end of the working frame 8 is provided with a plug 38, the plug 38 is movably connected with the inner side of the vertical cylinder 37.

[0064] The working frame 8 is also pulled upward by the float 6, when the liquid level in the treatment cavity 2 rises too high, the working frame 8 blocks the connection pipeline 24 with the plug 38, cutting off the communication between the connection pipeline 24 and the vertical cylinder 37.

[0065] The bottom of the float 6 is provided with a bubble supply pipe 35, the top end of the working frame 8 is provided with two clamping plates 26, and the connection ring 25 is clamped between the two clamping plates 26.

[0066] The cooperation of the clamping plates 26 and the connection ring 25 connects the float 6 with the working frame 8.

[0067] The bottom of the center column 5 is provided with a sliding block 9, the sliding block 9 movably abuts against the float component.

[0068] The bottom of the central column 5 is provided with a cylindrical cavity, and the bottom of the central column 5 is connected to the infusion tube 28. Two sliding grooves 27 are symmetrically recessed on the cylindrical cavity. A plug 29 is movably connected to the cylindrical cavity. Two sliders 9 are symmetrically arranged on the plug 29. The two sliding grooves 27 are symmetrically recessed on the cylindrical cavity. The sliders 9 are slidably connected to the sliding grooves 27.

[0069] Normally, slider 9 blocks infusion pipe 28. During the descent of float 6, slider 9 is squeezed, causing slider 9 and plug 29 to descend. Slider 9 is misaligned with infusion pipe 28, allowing infusion pipe 28 to connect with sliding groove 27. Infusion pipe 28 discharges liquid into processing chamber 2, causing the liquid level in processing chamber 2 to rise to the normal level. A water pump is installed on infusion pipe 28 away from the central column 5. Infusion pipe 28 is submerged below the liquid surface of the water container, where the water is mixed with calcium chloride and magnesium sulfate electrolytes.

[0070] Float 6 and Float 7 are made of materials with different densities. Float 6 has a higher density than Float 7.

[0071] The spring 42 of the extrusion frame presses the switch plate 16 against the wall of the sliding groove 13 through the control cylinder 12, so that the switch plate 16 can close the oil drain channel 15 and the liquid drain channel 17.

[0072] Calcium chloride and magnesium sulfate electrolytes are added to the processing chamber 2 to destroy the hydration film and double electric layer on the surface of the oil droplets, causing the oil droplets to aggregate and float. The drain channel 17 is connected to the flow pipe, which is used to discharge water.

[0073] The end of the bubble supply pipe 35 away from the annular pipe 34 is connected to the bubble generating device. The annular pipe 34 has multiple diameters and is arranged concentrically. The bubble generating device includes a dissolved air pump, which pressurizes air and dissolves it in water to form supersaturated dissolved air water.

[0074] When the pressure drops suddenly, a large number of micron-sized bubbles are released. The diameter of the micron-sized bubbles is ≤50μm. These bubbles combine with oil droplets and suspended matter to form an air flotation body, which accelerates oil-water separation.

[0075] A liquid control pipe 50 is provided in the middle of the processing box 1. The liquid control pipe 50 is connected to the processing chamber 2. A solenoid valve is provided on the liquid control pipe 50.

[0076] The embodiment is characterized in that the liquid suction pump on the connecting pipe 24 sucks the waste water with oil through the suction cylinder 23, the waste water passes through the suction cylinder 23, the connecting pipe 24, the vertical cylinder 37, and then the disc 19 to reach the circular cavity 49, the waste water is dispersed to the periphery of the mixing cover 33 through the communication cylinder 45 and the liquid discharge hole 46 by the circular cavity 49, the kinetic energy of the waste water is weakened, the bubble supply pipe 35 disperses the bubbles to the lower side of the mixing cover 33, the bubbles fully contact with the waste water, the bubbles combine with the oil droplets and the suspended matter to form the air float, the oil-water separation is accelerated, and the water and the oil form two layers, if the bubbles are mixed in the circular cavity 49, the water pressure will also increase, resulting in that the kinetic energy of the waste water is too large;

[0077] The mixing cover 33 blocks the flow direction of the waste water and the bubbles, and weakens the kinetic energy, so that the oil and the water do not flow upward violently, the kinetic energy of the upward flow of the water and the waste water is reduced, the two layers of the oil and the water maintain a stable stratified state, and the water and the oil are not mixed again.

[0078] The sliding block 9 movably abuts against the float one 6.

[0079] The relative positions of the float two 7 and the float one 6 are adjusted by rotating the float one 6 to adapt to different waste water densities, for example, when the waste water density is too large, the length of the float one 6 entering the float two 7 is increased, and the position of the float two 7 is lowered.

[0080] When the liquid level in the treatment cavity 2 rises to a certain position, the position can make the float two 7 and the float one 6 with the control cylinder one 11, the movable rod 41, the control cylinder two 12 and the switch plate 16 upwardly reach the communication hole 14 and face the oil discharge passage 15, at this time, the oil separated from the waste water can be discharged through the oil discharge passage 15 because the oil floats on the liquid surface.

[0081] The waste water continuously flows into the treatment cavity 2, the liquid level in the treatment cavity 2 further rises, the float two 7 and the float one 6 with the control cylinder one 11, the movable rod 41, the control cylinder two 12 and the switch plate 16 upwardly move, the liquid discharge passage 17 is partially opened, the water liquid with little oil at the bottom is discharged through the liquid discharge passage 17, and the liquid level is maintained at a height.

[0082] If the liquid level in the treatment cavity 2 rises again, the float two 7 and the float one 6 with the control cylinder one 11, the movable rod 41, the control cylinder two 12 and the switch plate 16 upwardly move, the liquid discharge passage 17 is completely opened, the switch plate 16 is staggered with the oil discharge passage 15, the waste water is prevented from entering the oil discharge passage 15, the waste water is discharged in a large amount through the liquid discharge passage 17, and the working frame 8 is also dragged upwardly by the float one 6, the working frame 8 blocks the connecting pipe 24 with the plug two 38, so that the waste water cannot enter the treatment cavity 2 again, until the liquid level in the treatment cavity 2 falls to a normal height, the float one 6 moves with the plug two 38 and the switch plate 16, and the opening of the oil discharge passage 15 and the connecting pipe 24 is opened.

[0083] When the liquid level in the processing cavity 2 is abnormally lowered, the float 6 is lowered, the float 6 closes the oil discharge passage 15 and the liquid discharge passage 17 through the U-shaped frame 10 and the extrusion frame with the switch plate 16, and the float 6 also abuts against the sliding block 9, and lowers the sliding block 9 and the plug 29, so that the liquid delivery pipeline 28 is connected with the sliding groove 27, and the liquid delivery pipeline 28 discharges liquid into the processing cavity 2, so that the liquid level in the processing cavity 2 is raised to the normal level, and the oil and water liquid layers maintain a stable stratified state, and the oil floats on the liquid level and can be discharged through the oil discharge passage 15.

[0084] It is understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions can be made. Such development efforts might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure, without undue experimentation.

[0085] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not limit the present application, and although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A separation device for oily wastewater, characterized in that: The utility model provides waste oil recovery device, including processing box (1), one end of processing box (1) is provided with oil suction mechanism, and the processing box (1) is recessed with processing cavity (2) inside, and is provided with waste oil recovery subassembly in processing cavity (2), and waste oil recovery subassembly includes automatic control part, bubble mixing part and switch part, and bubble mixing part sets up in the top of processing cavity (2), and bubble mixing part includes disc (19), and the periphery of disc (19) is uniformly provided with a plurality of fixed frame (18), and fixed frame (18) is fixedly connected with the inner wall of processing cavity (2), and the inside of disc (19) is recessed with circular cavity (49), and the inner bottom wall of circular cavity (49) is provided with a plurality of annular pipeline no. (34), and one of fixed frame (18) is equipped with bubble supply pipe (35), and bubble supply pipe (35) is connected with annular pipeline no. (34) through connecting pipeline, and annular pipeline no. (34) is uniformly provided with a plurality of bubble discharge piece, and bubble discharge piece stretches out from the top of circular cavity (49), the top of disc (19) is uniformly provided with a plurality of communicating cylinder (45), and the top of communicating cylinder (45) is provided with drainage hole (46), bubble discharge piece includes four branch pipeline (48), and four branch pipeline (48) annularly arranges, and the middle of the downside of disc (19) is provided with vertical cylinder (37), and vertical cylinder (37) is connected with oil suction mechanism, and oil suction mechanism extracts waste water with oil, and the top of communicating cylinder (45) is provided with mixing cover (33), branch pipeline (48) is arranged around the central axis of communicating cylinder (45), the bottom of communicating cylinder (45) is connected with the inner chamber of circular cavity (49), mixing cover (33) is covered in the top of branch pipeline (48), the top of branch pipeline (48) is provided with shower nozzle, and the shower nozzle is obliquely upwards to the drainage hole (46) of communicating cylinder (45), the automatic control part includes float part, and float part is connected with switch part through extrusion frame, and the top of processing cavity (2) is recessed with mounting groove, and the mounting groove is provided with top plate (3), and the top plate (3) is provided with a plurality of vent cylinder (4), and the middle of the downside of top plate (3) is provided with center column (5), and center column (5) is movably sleeved with float part, the switch part includes switch plate (16), and the top of processing cavity (2) is provided with sliding slot (13), and the top of one side of sliding slot (13) is recessed with oil discharge channel (15), and the middle of one side of sliding slot (13) is recessed with drainage channel (17), and the end close to processing cavity (2) of drainage channel (17) is obliquely downwards to the inside of processing cavity (2), and the end close to processing cavity (2) of oil discharge channel (15) is obliquely upwards to the inside of processing cavity (2), and the top of switch plate (16) is provided with communicating hole (14), and communicating hole (14) is movably connected with oil discharge channel (15), and switch plate (16) is slidably connected with sliding slot (13).The float component includes a float one (6), a float two (7) and a clamping groove (36), the float two (7) is recessed with the clamping groove (36), the clamping groove (36) clamps the U-shaped frame (10), the U-shaped frame (10) is connected with the extrusion frame, the float one (6) is threadedly connected with the float two (7), the relative position of the float two (7) and the float one (6) is adjusted by rotating the float one (6) to adapt to different wastewater densities;The working frame (8) is connected on the float component, the lower end of the working frame (8) extends into the vertical cylinder (37), the lower end of the vertical cylinder (37) is recessed with the communication opening (39), the bottom end of the working frame (8) is provided with the plug two (38), the plug two (38) is movably connected with the inner side of the vertical cylinder (37);The top end of the working frame (8) is provided with two clamping plates (26), the connecting ring (25) on the float component is clamped between the two clamping plates (26);The bottom of the center column (5) is provided with a cylindrical cavity, the bottom of the center column (5) is connected with the liquid delivery pipeline (28), the cylindrical cavity is symmetrically recessed with two sliding grooves (27), the cylindrical cavity is movably connected with the plug one (29), the plug one (29) is symmetrically provided with two sliding blocks (9), the sliding block (9) is movably connected with the sliding groove (27), and the sliding block (9) movably abuts against the float component;The air bubble supply pipe (35) is connected with the bubble generating device away from one end of the annular pipeline one (34), the bubble generating device includes a dissolved air pump, air is pressurized and dissolved in water by the dissolved air pump to form supersaturated dissolved air water, a large number of micron-sized bubbles are released, the diameter of the micron-sized bubbles is ≤50μm, the bubbles are combined with oil droplets and suspended matters to form air floaters, and oil-water separation is accelerated;The float component can automatically control the connection and closing of the liquid delivery pipeline (28) and the center column (5), and can also automatically control the opening and closing of the oil discharge channel (15) and the liquid discharge channel (17).

2. The device for separating oil-containing wastewater according to claim 1, characterized in that: The oil absorption mechanism comprises a funnel table (21), a floating ball (22), a liquid suction cylinder (23) and a connecting pipeline (24), the upper side of the funnel table (21) is uniformly provided with three floating balls (22), the middle part of the funnel table (21) is provided with the liquid suction cylinder (23), the liquid suction cylinder (23) is connected with the connecting pipeline (24), the connecting pipeline (24) extends into the inner side of the processing cavity (2), the end, away from the liquid suction cylinder (23), of the connecting pipeline (24) is connected with a vertical cylinder (37), and the connecting pipeline (24) is provided with a liquid pump.

3. The device for separating oil-containing wastewater according to claim 1, characterized in that: The extrusion frame comprises a control cylinder one (11), a control cylinder two (12), a movable rod (41), a spring one (42) and a corrugated sleeve (43), one end of the movable rod (41) is movably inserted with the control cylinder one (11), the other end of the movable rod (41) is movably inserted with the control cylinder two (12), the outer side of the movable rod (41) is sleeved with the spring one (42), one end of the spring one (42) is abutted with the control cylinder one (11), the other end of the spring one (42) is abutted with the control cylinder two (12), the control cylinder two (12) and the control cylinder one (11) are connected with the corrugated sleeve (43), the corrugated sleeve (43) is sleeved on the outer side of the movable rod (41), the control cylinder two (12) and the switch board (16) form a triangle, and the control cylinder two (12) is connected with the switch board (16).

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