CN115721969A - Oil-water separation device and oil-water separation method - Google Patents
Oil-water separation device and oil-water separation method Download PDFInfo
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- CN115721969A CN115721969A CN202111011249.9A CN202111011249A CN115721969A CN 115721969 A CN115721969 A CN 115721969A CN 202111011249 A CN202111011249 A CN 202111011249A CN 115721969 A CN115721969 A CN 115721969A
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- 238000000926 separation method Methods 0.000 title claims abstract description 148
- 239000007788 liquid Substances 0.000 claims abstract description 666
- 238000009825 accumulation Methods 0.000 claims abstract description 234
- 238000005192 partition Methods 0.000 claims abstract description 196
- 238000009826 distribution Methods 0.000 claims abstract description 40
- 230000000903 blocking effect Effects 0.000 claims abstract description 19
- 238000009792 diffusion process Methods 0.000 claims abstract description 11
- 238000007790 scraping Methods 0.000 claims description 173
- 238000007667 floating Methods 0.000 claims description 80
- 239000012530 fluid Substances 0.000 claims description 73
- 238000013016 damping Methods 0.000 claims description 37
- 239000010410 layer Substances 0.000 claims description 36
- 239000002699 waste material Substances 0.000 claims description 33
- 238000004891 communication Methods 0.000 claims description 30
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- 230000005484 gravity Effects 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims 2
- 238000005238 degreasing Methods 0.000 abstract description 88
- 239000004519 grease Substances 0.000 abstract description 85
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention relates to degreasing bath solution treatment, and discloses an oil-water separation device which comprises an oil-water separation tank provided with a liquid inlet and a liquid return port, wherein a tank cavity of the oil-water separation tank is at least divided into a liquid inlet accumulation area and an oil removal accumulation area by a liquid inlet partition plate unit, and the liquid inlet partition plate unit is formed to be provided with a liquid inlet accumulation blocking structure and a liquid inlet path distribution turning structure, so that liquid input from the liquid inlet can be accumulated in the liquid inlet accumulation area by the blocking of the liquid inlet accumulation blocking structure, and can enter the oil removal accumulation area from the bottom of the oil removal accumulation area through the distribution diffusion guide of the liquid inlet path distribution turning structure after being accumulated in place. The oil-water separation device can form uniform and slow liquid flow in the oil removal accumulation area, so that the grease in the liquid floats on the liquid surface, the grease in the liquid is removed, and the oil-water separation effect is good. The invention also discloses an oil-water separation method.
Description
Technical Field
The invention relates to degreasing bath solution treatment, in particular to an oil-water separation device. In addition, the invention also provides an oil-water separation method.
Background
In the production process of engineering machinery and automobiles, workpieces and automobile bodies need to be coated. In order to ensure that the coating can be firmly attached to the surface of a workpiece or a vehicle body, degreasing treatment is usually performed before coating production so as to clean antirust oil, scrap iron, welding slag, welding balls, zinc powder and the like on the surface and in an inner cavity of the workpiece/white vehicle body and prepare for a subsequent coating process. The effect of degreasing directly affects the quality of the coating.
The surface and the inner cavity of the workpiece/body-in-white are usually cleaned by using degreasing bath solution during degreasing treatment, and rust preventive oil on the workpiece/body-in-white can enter the degreasing bath solution during cleaning, so that the oil content in the degreasing bath solution is increased. The oil content is an important process control parameter for measuring the degreasing effect of the degreasing bath solution, and the increase of the oil content in the degreasing bath solution can affect the cleaning effect of the anti-rust oil on the surface of a workpiece/a white vehicle body, thereby affecting the coating quality and polluting the subsequent processes.
In order to ensure the cleaning effect on the workpieces/body-in-white, the degreasing bath solution is usually discarded after the oil content in the degreasing bath solution exceeds the process requirement range, or an oil-water separation device is used for separation to separate and remove grease in the degreasing bath solution, so as to reduce the oil content in the degreasing bath solution. The existing oil-water separation devices can be generally divided into two types, namely standing separation type oil-water separation devices and active separation type oil-water separation devices according to the principle of oil-water separation. The standing separation type oil-water separation device has the advantages that oil density is lower than that of water, grease can float on the surface of water in a standing state, degreasing tank liquid is placed in a container and is in a static state, and an oil scraping plate is adopted to scrape the grease floating on the water surface to separate oil from water. However, in the static separation type oil-water separation device, a certain amount of degreasing bath solution is usually added into a container, oil-water separation is performed in a static state, a certain amount of degreasing bath solution is added for separation after separation is completed, the oil-water separation process is usually a discontinuous process, and the oil-water separation speed is relatively low. The flowing degreasing bath solution is easy to form irregular liquid flow, and the floating of the grease is influenced. In addition, the flowing state of the degreasing bath liquid is easy to cause grease floating in the floating process and on the liquid surface to gather in the flowing direction along with the flowing of the degreasing bath liquid, and even the grease flows out of the oil-water separation device, so that the oil-water separation effect is influenced. Forming an insurmountable obstacle to oil-water separation in a flowing state.
Disclosure of Invention
The invention aims to solve the technical problem of providing an oil-water separation device which can continuously and dynamically remove oil in the flowing process of oil-containing liquid and has good oil-water separation effect.
The invention further aims to provide an oil-water separation method which can improve the oil-water separation effect of flowing liquid.
In order to solve the above technical problems, an aspect of the present invention provides an oil-water separation device, including an oil-water separation tank having a liquid inlet and a liquid return port, wherein a tank cavity of the oil-water separation tank is partitioned into at least a liquid inlet accumulation region and an oil removal accumulation region by a liquid inlet partition unit, so that in a working state, a liquid input from the liquid inlet can enter the liquid inlet accumulation region, and flow into the oil removal accumulation region via the liquid inlet partition unit to remove oil, and then flow out via the liquid return port; wherein, feed liquor baffle unit forms to have feed liquor accumulation barrier structure and feed liquor route distribution and turns to the structure to make the liquid of inlet input pass through the blocking of feed liquor accumulation barrier structure and can be in feed liquor accumulation district is accumulated, and can pass through after accumulating to the target position the distribution diffusion guide of feed liquor route distribution turning to structure, and follow this deoiling accumulation district is got into to the bottom in deoiling feed liquor accumulation district.
Preferably, the feed liquid partition plate unit comprises a feed liquid forward partition plate and a feed liquid backward partition plate which are arranged in a vertically staggered manner and spaced front and back, wherein the feed liquid forward partition plate is arranged on one side adjacent to the feed liquid accumulation region, and the bottom of the feed liquid forward partition plate is in contact with the bottom of the tank cavity, so that the feed liquid accumulation blocking structure is formed by the feed liquid forward partition plate; the top of back feed liquor baffle is higher than the top of liquid baffle advances, the bottom with through-flow clearance has between the tank bottom of vallecular cavity, and is less than the top of preceding feed liquor baffle, with liquid accumulation district accumulates to the back liquid can via the top of preceding liquid baffle advance the interval between liquid baffle and the back liquid baffle and the through-flow clearance is followed the bottom of deoiling accumulation district gets into deoiling accumulation district, thereby forms feed liquor route distribution turns to the structure. In this preferred technical scheme, dislocation arrangement and front and back spaced liquid baffle and back liquid baffle advance from top to bottom, on the one hand constituted and blocked the oily liquid that gets into through the inlet for liquid is in the liquid inlet accumulation district accumulational barrier structure of liquid, on the other hand constituted by the liquid inlet route distribution that the through-flow clearance of the through-flow clearance constitution of advancing liquid baffle top, the region between liquid baffle and the back liquid baffle bottom of advancing liquid baffle turned to the structure, the liquid inlet accumulation barrier structure turned to simple structure with the liquid inlet route distribution, the liquid flow distributes rationally, it is effectual to slow down.
Preferably, the oil-water separation device further comprises a liquid return partition plate unit, the tank cavity is divided into the liquid inlet accumulation area, the oil removal accumulation area and the liquid return area by the liquid inlet partition plate unit and the liquid return partition plate unit, and a fluid communication damping structure is arranged on the liquid return partition plate unit, so that liquid in the oil removal accumulation area can enter the liquid return area through the fluid communication damping structure in a working state and further flow out through the liquid return port. Through this preferred technical scheme, return liquid baffle unit can block the liquid in the deoiling accumulation area for liquid in the deoiling accumulation area can slowly flow into the liquid return district through the fluid intercommunication damping structure on returning liquid baffle unit, and flow out through returning the liquid mouth. After the oil is blocked by the liquid return partition plate unit, the liquid in the oil removal accumulation area flows more uniformly, and the liquid flow distribution is more reasonable.
Further preferably, the liquid return partition plate unit comprises a front liquid return partition plate, the bottom of the front liquid return partition plate is in contact with the bottom of the groove cavity, and the fluid communication damping structure is arranged at the lower part of the front liquid return partition plate. In the preferred technical scheme, the fluid communication damping structure arranged at the lower part of the front liquid return partition plate can enable liquid in the oil removal accumulation area to slowly flow out from the lower part of the tank cavity, so that the liquid in the whole oil removal accumulation area has the advantages of high liquid flow speed at the lower part and low liquid flow speed at the upper part, and liquid flow distribution is more favorable for floating and separating grease in the liquid.
Further, the fluid communication damping structure comprises a plurality of fluid damping communication holes arranged at the lower part of the front liquid return partition plate. In the preferred technical scheme, the fluid damping connecting through hole can increase the resistance of the liquid in the oil removing accumulation area when the liquid flows through the connecting through hole and slow down the flowing speed of the liquid. The setting of a plurality of fluid damping connect the through-hole has increased the scope that liquid flows out on the one hand for liquid in the deoiling accumulation area flows out more evenly, and on the other hand has increased the total flow area of fluid damping intercommunication hole, when guaranteeing the interior liquid total output of deoiling accumulation area, has slowed down the outflow velocity of the liquid through every fluid damping intercommunication hole, makes the outflow of liquid more gentle.
Preferably, the liquid return partition plate unit further comprises a rear liquid return partition plate arranged at an interval with the front liquid return partition plate, and the rear liquid return partition plate is arranged at one side adjacent to the liquid return area; the bottom of the back liquid return partition plate is in contact with the bottom of the groove cavity, and the top of the back liquid return partition plate is lower than the top of the front liquid return partition plate. Through this preferred technical scheme, preceding liquid baffle that returns can form to block the higher liquid of oil content in the upper strata of the oily liquid in the deoiling accumulation area, reduces the volume of the grease that gets into in the liquid return district, improves the oil-water separation effect. Meanwhile, the rear liquid return partition plate can shield liquid flowing in through the fluid communication damping structure, so that the liquid changes the flow direction and enters the liquid return area from the top of the rear liquid return partition plate, the accumulation of the oil-containing liquid in the oil removal accumulation area is further ensured, the outflow speed of the liquid in the oil removal accumulation area can be reduced, the flow of the liquid in the oil removal accumulation area is more uniform, the flow speed of the liquid in the oil removal area is further reduced, and the floating and separation of grease in the oil-containing liquid are facilitated.
Preferably, the oil-water separation device further comprises a liquid inlet pipe, a liquid return pipe and a waste discharge pipe, wherein the liquid inlet pipe is connected to the liquid inlet, the liquid return pipe is connected to the liquid return port, and the waste discharge pipe is respectively connected with the bottoms of the liquid inlet accumulation area, the accumulated oil removal area and the liquid return area. In this preferred technical scheme, can be through feed liquor pipe to the input oiliness liquid of feed liquor accumulation district, through the liquid that returns the liquid pipe output through oil-water separation to can be when needing through the liquid evacuation of waste discharge pipe in with the oil-water separation groove, be convenient for wash and maintain oil-water separation groove.
Preferably, an oil scraping device is disposed above the oil removal accumulation area, and an oil collecting tank is disposed on one side of the oil removal accumulation area, so that floating oil on the surface of the oil removal accumulation area can be scraped into the oil collecting tank by the oil scraping operation of the oil scraping device. In the preferable technical scheme, the oil scraping device can scrape floating oil floating on the liquid surface in the oil-containing liquid in the oil removal accumulation area into the oil collecting tank, so that the oil in the oil-containing liquid is removed. The oil collecting tank can collect the grease scraped from the oil removing accumulation area, so that the grease can be conveniently recovered and treated.
Preferably, a moving direction of a scraping member of the oil scraping device is set to be perpendicular to a flowing direction of the liquid in the oil removal accumulation area to enable a scraping action perpendicular to the flowing direction. Through this preferred technical scheme, the frizing action of frizing part perpendicular to the liquid flow direction in the district that deoils can reduce the interference of liquid stream to the oil slick gathering, better with the grease scraping that floats on deoiling district liquid level to can make oil water separator's overall arrangement compacter.
Further preferably, the oil scraping device comprises a guide rail, an oil scraping plate and a driving device, the guide rail is arranged perpendicular to the flowing direction of the liquid in the oil removing accumulation area, and the oil scraping plate is mounted on the guide rail and can move along the guide rail under the driving of the driving device. According to the preferable technical scheme, the oil scraping plate is used as the oil scraping component and moves along the direction of the guide rail, the oil scraping action perpendicular to the flowing direction of liquid in the accumulated oil removing area is formed, the stability of the oil scraping action is higher, grease floating on the liquid surface of the oil removing area can be better scraped, and the layout of the oil-water separation device can be more compact.
Further preferably, the driving device comprises a driving motor and a screw rod, the screw rod is connected to a rotating shaft of the driving motor, and the oil scraping plate is provided with a driving screw hole matched with the screw rod and screwed on the screw rod through the driving screw hole. In the preferred technical scheme, when the driving motor rotates, the screw rod can be driven to rotate, and the oil scraping plate is driven to do linear motion on the screw rod and the guide rail, so that oil scraping action is formed. When the driving motor rotates reversely, the oil scraping plate can be driven to return to the initial position. The driving is convenient, and the positioning precision of the oil scraping plate is high.
Further, the bottom of the oil scraping plate is provided with an adjustable scraping plate, and the adjustable scraping plate is suitable for adjusting the installation position of the adjustable scraping plate on the oil scraping plate. In the preferred technical scheme, the installation position of the adjustable oil scraping plate on the oil scraping plate is adjusted, so that the depth of the bottom of the adjustable oil scraping plate inserted into the liquid level can be adjusted, and the oil scraping effect is better achieved.
Preferably, the bottom of the oil collecting tank is connected to a waste oil tank through a waste oil pipeline, and a waste oil pump is arranged on the waste oil pipeline. In this preferred technical scheme, the oil drain pump can in time take out the grease that the frizing device scraped the oil trap, send to the waste oil jar and store, prevents that the grease in the oil trap is too much, influences the oil slick in the deoiling accumulation area and scrapes out, also can prevent that the grease in the oil trap from overflowing.
Preferably, the oil-water separation device further comprises an oil pushing device, the oil pushing device is arranged on the other side, opposite to the oil collecting tank, of the oil removing accumulation area, and the oil scraping device is arranged between the oil pushing device and the oil collecting tank; the oil pushing device includes a fluid ejecting section to be able to eject fluid therethrough to form a fluid jet flow for pushing floating oil toward the oil sump at the oil removal accumulation area liquid surface layer. In the preferred technical scheme, the oil pushing device can eject fluid through the fluid ejecting part to push grease floating on the liquid level to the direction of the oil collecting tank, so that the oil pushing device can be matched with the oil scraping device to improve the oil removing effect of the oil scraping device.
Further preferably, the oil pushing device comprises a water jet, a circulating pump and a circulating water pipe, an inlet of the circulating pump is connected with the middle part of the groove cavity so as to be capable of pumping liquid, and an outlet of the circulating pump is connected with the water jet through the circulating water pipe. Through this preferred technical scheme, the circulating pump can be taken out the less liquid of cell cavity intermediate level oil content to through the water jet cutter blowout, form the water film that sprays, play the impetus to the grease on the liquid level.
Preferably, an oil baffle plate is arranged between the oil collecting tank and the oil removal accumulation area, an adjustable baffle plate is arranged at the top of the oil baffle plate, and the adjustable baffle plate is suitable for adjusting the installation position of the adjustable baffle plate on the oil baffle plate. In this preferred technical scheme, can adjust the height of keeping off the oil board top apart from deoiling district liquid level through adjustable gear version for grease on the deoiling district liquid level can conveniently get into the oil trap more, realizes oil-water separation better.
The second aspect of the invention provides an oil-water separation method, which comprises the following steps: s10: liquid to be subjected to oil-water separation is diffused to flow respectively to reduce the flow velocity, and enters the oil removal accumulation area from the lower part of the oil removal accumulation area; s20: reducing the discharge speed of the liquid entering the oil removal accumulation area, thereby prolonging the accumulation time in the oil removal accumulation area and forming a floating oil layer of a liquid surface layer by utilizing the difference of specific gravity of oil and water; s30: removing the floating oil layer in the oil removal accumulation area.
Preferably, in step S30: the oil scraping part of the oil scraping device moves on the surface layer of the liquid, so that the floating oil layer is scraped. In this preferred technical scheme, can get rid of the oil slick on the liquid level automatically in a great scope through the frizing part of frizing device, it is more convenient to get rid of the oil slick, and the deoiling effect is also better.
It is further preferred that the scraper member of the scraper device is caused to move in a direction perpendicular to the flow of the liquid. Through this preferred technical scheme, can reduce the influence that the grease that scrapes the oil action and flow to the liquid level that flows, make things convenient for the scraping of the oil component to the floating grease on the liquid level, improve the frizing effect of frizing component.
Preferably, before the oil scraping member of the oil scraping device is activated, a fluid jet is formed at the liquid surface jet body to push the floating oil layer toward the side of the oil removal accumulation area, and after the oil pushing operation, the oil scraping member of the oil scraping device is activated to move toward the side at the liquid surface to scrape the floating oil layer. In the preferred technical scheme, the grease on the liquid surface is pushed to one side of the oil removal accumulation area through the fluid jet flow to form an oil pushing operation, and the grease on the liquid surface is scraped through the oil scraping device after the oil pushing operation, so that the grease on the liquid surface can be more conveniently scraped, and the scraping effect on the grease on the liquid surface is better.
Further preferably, the movement of the oil scraping member includes movement of the oil scraping member in a direction away from the oil pushing device and movement of the oil scraping member in a direction toward the oil pushing device, the oil pushing device jets a fluid jet flow when the oil scraping member moves in the direction toward the oil pushing device, and the oil pushing device stops jetting when the oil scraping member moves in the direction away from the oil pushing device. Through this preferred technical scheme, can strike off when floating at the liquid level grease at the frizing part, stop the work of thrust unit, reduce the energy consumption of pushing away the oily device to can prevent at the in-process of frizing part frizing, the fluid jet leads to the fact the interference to the oil slick on the liquid level, influences the frizing effect of frizing board.
The oil-water separation device provided by the invention can divide the cavity of the oil-water separation tank into a liquid inlet accumulation area and an oil removal accumulation area by using the liquid inlet partition plate unit. Moreover, the liquid inlet accumulation blocking structure of the liquid inlet partition plate unit can block oily liquid which rapidly enters the liquid inlet accumulation area through the liquid inlet, so that the oily liquid is accumulated in the oil inlet accumulation area; the liquid inlet path distribution and steering structure of the liquid inlet partition plate unit can guide oil-containing liquid in the oil inlet accumulation area to enter the oil removal accumulation area from the bottom of the oil removal accumulation area after steering, and guide liquid flow to be distributed and diffused in the oil removal accumulation area, so that liquid flow path distribution with slow flow rate and different upper and lower flow rates is formed, and the liquid in the oil removal accumulation area slowly flows at a reduced speed, the flow rate of the liquid in the lower layer is fast, and the flow rate of the liquid in the upper layer is slow. Therefore, the grease in the oil-containing liquid slowly floats in the slow flowing process of the liquid because the specific gravity of the grease is lower than that of water, the liquid flow speed is slower in the floating process of the grease, the floating time of the grease is prolonged, the gathering of the grease on the upper layer of the liquid is facilitated, and the oil-water separation effect is improved. The oil-water separation device can ensure that liquid entering the oil removal accumulation area flows uniformly and slowly according to the set liquid flow distribution under the condition of high liquid inlet speed, so that grease in the liquid floats to the liquid surface in the oil removal accumulation area, and oil-water separation is realized. Therefore, the oil-water separation device can be used in a coating production line to carry out dynamic oil removal treatment on degreasing bath solution. The oil-water separation device provided by the invention utilizes a physical mode to remove oil, does not need any disposable material, and has good oil-water separation effect and low operation cost.
The oil-water separation method of the invention forms liquid flow with slower flow speed and different upper and lower flow speed distribution in the oil removal accumulation area by the diffusion distribution flow of the oil-containing liquid, improves the retention time of the oil-containing liquid in the oil removal accumulation area, facilitates the oil with smaller specific gravity to float from the liquid, leads the oil in the liquid to be gathered on the liquid surface to form a floating oil layer, and removes the floating oil layer to realize the oil-water separation, and has simple oil-water separation process and good separation effect.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
FIG. 1 is a plan view of an embodiment of the oil-water separator of the present invention;
FIG. 2 is a perspective view of an oil-water separator according to an embodiment of the present invention;
FIG. 3 is an exploded view of the components of an embodiment of the oil-water separator of the present invention;
FIG. 4 is a schematic diagram showing the position of a partition plate according to an embodiment of the oil-water separation device of the present invention;
FIG. 5 is a schematic view of another embodiment of the oil-water separator according to the present invention;
FIG. 6 is a schematic side view of an oil-water separator according to an embodiment of the present invention;
FIG. 7 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 6;
FIG. 8 is a partial enlarged view of portion B of FIG. 7;
FIG. 9 is an enlarged view of a portion C of FIG. 7;
fig. 10 is a partially enlarged view of a portion D in fig. 1.
Description of the reference numerals:
1. liquid inlet pipe 2 oil-water separation tank
21. Oil removal zone of the intake zone 22
23. 24 oil collecting grooves in liquid return area
241. Adjustable baffle of oil baffle 242
3. First front partition of liquid return pipe 41
42. First rear partition 43 and second front partition
431. Water through hole 44 second rear partition plate
441. Oil pushing device of return valve 5
51. Water jet 52 circulating pump
53. Circulating water pipe 6 oil scraping device
61. Oil scraper 611 adjustable oil scraper
62. Guide rail 63 driving device
631. Screw rod of driving motor 632
7. Support frame 8 waste oil pump
81. 9-row waste pipe of waste oil tank
Detailed Description
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "disposed," and "connected" are to be construed broadly, and for example, the term "connected" may be a fixed connection, a detachable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise specified, the orientation or positional relationship indicated by the use of the terms of orientation such as "front, rear, upper, and lower" is based on the orientation or positional relationship of the oil-water separator of the present invention when it is actually used. The terms "front and rear" are relative to the direction of the water flow, wherein the direction indicated by the term "front" is the direction of the liquid inlet, i.e. the direction in which the liquid inlet pipe is located. The description of the orientation or positional relationship of the oil-water separator and its components of the present invention is consistent with the installation orientation in actual use.
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, and it is to be understood that the detailed description is provided for purposes of illustration and explanation and is not intended to limit the scope of the invention.
An embodiment of the oil-water separation device of the present invention, as shown in fig. 1 to 10, includes an oil-water separation tank 2 having a liquid inlet and a liquid return port. The groove body of the oil-water separation groove 2 is usually set to be in a cuboid shape, and may also be in other shapes, such as a cylindrical shape, a conical shape, a square shape, a bent cuboid shape, etc., and a groove cavity corresponding to the shape of the groove body is arranged in the groove body. The liquid inlet and the liquid return port are arranged at two ends which are far away from each other in the groove cavity of the oil-water separation groove 2, and for the groove body in the shape of a cuboid, the liquid inlet and the liquid return port are arranged at two ends of the oil-water separation groove 2 in the length direction. A liquid inlet partition plate unit is arranged in a groove cavity of the oil-water separation groove 2, stretches across the groove body of the oil-water separation groove 2, and divides the groove cavity of the oil-water separation groove 2 into a liquid inlet accumulation area 21 located on one side, adjacent to the liquid inlet, of the liquid inlet partition plate unit and an oil removal accumulation area 22 located on the other side of the liquid inlet partition plate unit. In an operating state, after the oil-containing liquid flowing in from the liquid inlet is accumulated in the liquid inlet accumulation region 21, the oil-containing liquid can flow into the oil removal accumulation region 22 through the liquid inlet partition plate unit, oil-water separation is performed in the oil removal accumulation region 22, grease in the oil-containing liquid is removed, and the oil-containing liquid flows out through the liquid return port and is reused. The liquid inlet partition unit is provided with a liquid inlet accumulation blocking structure and a liquid inlet path distribution and diversion structure, and the liquid inlet accumulation blocking structure can block liquid flow entering the liquid inlet accumulation area 21, so that the liquid flow changes the flow direction and is accumulated in the liquid inlet accumulation area 21. The feed path distribution diverting structure is capable of directing the liquid in the feed accumulation zone 21 to form a distributed diffused stream, i.e., directing the stream to diffuse to a greater extent and to form a smooth stream distribution over a greater extent. The oil-containing liquid guided by the liquid inlet partition unit is blocked and distributed and diffused enters the oil removal accumulation area 22 from the bottom of the oil removal accumulation area 22, and is further distributed and diffused in the oil removal accumulation area 22, so that the speed of the liquid flow is further greatly reduced, and meanwhile, in the distributed fluid paths in the oil removal accumulation area 22, the flow speed of the upper fluid path is lower than that of the lower fluid path. Since the specific gravity of oil is smaller than that of water, during the process that the oil-containing liquid slowly flows in the oil removal accumulation area 22, the grease in the liquid can float upwards and gather, and gather on the liquid surface to form a grease layer with an oil-water interface. Therefore, the oil on the liquid surface can be removed by an oil scraping device, a surface layer oil guide device or a manual skimming method and the like, and the oil-water separation is realized. The liquid flow in the oil removal accumulation area 22 is very smooth, so that the impact of the liquid flow on the grease in the floating process can be reduced, and the floating of the grease in the oil-containing liquid is facilitated. In addition, the upper fluid path has a lower flow velocity than the lower fluid path, so that the flow velocity of the liquid on the fluid path where the grease is located is lower and lower in the floating process of the grease, the retention time of the liquid in the oil removal accumulation area 22 is prolonged, the grease has longer floating time, and the grease is more favorably accumulated on the liquid surface. And the flowing speed of the liquid surface is minimum, the flowing of the floating oil on the liquid surface can be reduced, the floating oil is prevented from gathering towards the direction of the liquid return port, the amount of the floating oil flowing out through the liquid return port is reduced, and the oil removing effect is ensured.
In some embodiments of the oil-water separation device of the present invention, as shown in fig. 1 to 5, the liquid inlet partition unit includes a liquid inlet partition 41 and a liquid outlet partition 42. The front liquid inlet partition plate 41 and the rear liquid inlet partition plate 42 are arranged in a vertically staggered manner, and a certain distance is reserved between the front liquid inlet partition plate and the rear liquid inlet partition plate. Wherein the liquid advancing partition 41 is provided on the side adjacent to the liquid inlet accumulation zone 21. The liquid inlet on the oil-water separation tank 2 is arranged at the position, close to the bottom of the tank cavity, of the side wall of the oil-water separation tank 2, and the liquid advancing partition plate 41 is also arranged with the bottom in contact with the bottom of the tank cavity. Front feed-liquid partition 41 is formed into a feed-liquid accumulation blocking structure of a feed-liquid partition unit, so as to block liquid entering the feed-liquid accumulation area from a feed liquid inlet and enable the blocked liquid to change the flow direction and accumulate in feed-liquid accumulation area 21. The top of the front liquid partition plate 41 is lower than the upper edge of the tank body of the oil-water separation tank 2, and when the liquid in the liquid inlet accumulation area 21 is accumulated to a liquid level higher than the top of the front liquid partition plate 41, the liquid changes the flow direction to cross the top of the front liquid partition plate 41 and enters the gap between the front liquid partition plate 41 and the rear liquid partition plate 42. The top of the rear liquid-feeding partition plate 42 is higher than that of the front liquid-feeding partition plate 41, a through-flow gap is arranged between the bottom of the rear liquid-feeding partition plate 42 and the bottom of the cavity of the oil-water separation tank 2, and the bottom of the rear liquid-feeding partition plate 42 is lower than that of the front liquid-feeding partition plate 41. In this way, the rear liquid-intake partition 42 can block the liquid entering from the top of the front liquid-intake partition 41, so that the liquid turns downward and turns again at the bottom of the gap between the front liquid-intake partition 41 and the rear liquid-intake partition 42, and enters the oil-removing accumulation area 22 through the through-flow gap between the bottom of the rear liquid-intake partition 42 and the bottom of the cavity of the oil-water separation tank 2. In this way, the forward liquid partition plate 41 and the backward liquid partition plate 42 are mutually matched, and by utilizing the matching between the forward liquid partition plate 41 and the backward liquid partition plate 42 and the oil-water separation tank 2, a liquid inlet path distribution turning structure is formed, and the liquid inlet path distribution turning structure performs distribution, diffusion and guidance on the liquid in the liquid inlet accumulation zone 21, so that the liquid is turned for multiple times through the top of the forward liquid partition plate 41, the gap between the forward liquid partition plate 41 and the backward liquid partition plate 42 and the through-flow gap at the bottom of the backward liquid partition plate 42, and generates a diffusion and guidance effect on the liquid flow distribution, so that the liquid flow rate entering the oil removal accumulation zone 22 is slower, and a distributed fluid path with a slower lower flow rate and a slower upper flow rate is formed.
Of course, the liquid inlet partition plate unit may also adopt other structural forms, specifically, a partition plate with a curved shape such as a parabola-like shape may be adopted, the top position of the parabola-like shape is used as a liquid inlet accumulation blocking structure, and after the other positions of the parabola are adaptively adjusted, the liquid inlet partition plate unit is opened at the bottom of the oil removing accumulation area 22 to be used as a liquid inlet path distribution turning structure. Or a bent partition plate or a plurality of partition plates are combined to form a bent or zigzag liquid flow channel with gradually increased flow area, and the outlet of the liquid flow channel is positioned at the bottom of the oil removing accumulation area 22 to form a liquid inlet accumulation blocking structure and a liquid inlet path distribution turning structure, so that the liquid flow entering the oil removing accumulation area 22 is subjected to distribution, diffusion and guide effects.
In some embodiments of the oil-water separation device of the present invention, as shown in fig. 1 to 5, the oil-water separation device of the present invention further comprises a liquid-returning partition unit. The liquid return partition plate unit is arranged in a groove cavity of the oil-water separation groove 2 and is adjacent to the liquid return port, and the groove cavity of the oil-water separation groove 2 is divided into a liquid inlet accumulation area 21, an oil removal accumulation area 22 and a liquid return area 23 which are arranged from the liquid inlet to the liquid return port by the liquid inlet partition plate unit and the liquid return partition plate unit. The liquid return partition board unit is provided with a fluid communication damping structure, and liquid entering the oil removal accumulation area 22 from the liquid inlet accumulation area 21 enters the liquid return area 23 through the fluid communication damping structure on the liquid return partition board unit after being blocked by the liquid return partition board unit. The fluid communication damping structure is a structure which allows liquid to pass through but can generate certain resistance to the liquid flowing through, such as a small hole passage, a narrow slit passage, a damping valve and the like. The fluid communication damping structure is capable of blocking the liquid flowing therethrough such that the liquid accumulates in the oil accumulation zone 22 and slowly flows out of the oil accumulation zone 22, into the liquid return zone 23, and out through the liquid return port. The damping effect of the fluid communicating damping structure on the liquid further slows down the flow rate of the liquid in the degreasing accumulation area 22, so that the grease in the liquid has longer time to rise and float from the liquid, more grease in the liquid can be gathered on the surface of the liquid, and the effect of oil-water separation is better.
As an embodiment of the oil-water separator of the present invention, as shown in fig. 1 to 5, the liquid-returning partition unit includes a front liquid-returning partition 43, the front liquid-returning partition 43 intersects the cavity of the oil-water separation tank 2, and the bottom of the front liquid-returning partition 43 contacts the bottom of the cavity of the oil-water separation tank 2, the fluid communication damping structure is disposed at the lower part of the front liquid-returning partition 43, and the liquid in the oil removal accumulation region 22 can only flow out through the fluid communication damping structure at the lower part of the front liquid-returning partition 43 under the block of the front liquid-returning partition 43. The fluid communication dampening structure also enables the routing of nearby fluid streams such that the lower portion of the deoiling pooling portion 22 has a slightly faster fluid flow rate and the upper portion has a slower fluid flow rate, thereby maintaining the fluid routing of the fluid throughout the deoiling pooling portion 22.
In some embodiments of the oil-water separator of the present invention, as shown in fig. 1 to 5, the fluid communication damping structure may be a plurality of fluid damping communication holes 431 provided at a lower portion of the front liquid return partition 43. The fluid damping communication hole 431 is a small-diameter through hole provided on the front liquid return partition plate 43, and since the diameter of a single through hole is small, the resistance when the fluid passes is large, thereby performing a damping function. The fluid damping communication holes 431 may be distributed at the lower portion of the front liquid-returning partition plate 43 or may be arranged in an array at the lower portion of the front liquid-returning partition plate 43. The arrangement of the plurality of fluid damping communication holes 431 can generate damping effect on the liquid in the oil removing accumulation area 22, and simultaneously can improve the total flow rate of the liquid passing through the fluid communication damping structure, and make the liquid in the oil removing accumulation area 22 flow through the front liquid return partition plate 43 in a larger range, thereby improving the uniformity of liquid outflow.
As a specific embodiment of the oil-water separator of the present invention, as shown in fig. 1 to 5, the liquid-returning partition unit further includes a rear liquid-returning partition 44, and the rear liquid-returning partition 44 is spaced from the front liquid-returning partition 43. The rear liquid return partition 44 is disposed at a side adjacent to the liquid return area 23, and the bottom of the rear liquid return partition 44 is in contact with the bottom of the oil-water separation tank chamber, so that the liquid flowing out through the fluid damping communication hole 431 is deflected by the barrier of the rear liquid return partition 44, and is accumulated at the space between the rear liquid return partition 44 and the front liquid return partition 43. The top of the back liquid-returning partition plate 44 is lower than the top of the front liquid-returning partition plate 43, and when the liquid level of the liquid which is separated and accumulated between the back liquid-returning partition plate 44 and the front liquid-returning partition plate 43 is higher than the height of the top of the back liquid-returning partition plate 44, the liquid overflows from the top of the back liquid-returning partition plate 44, turns to flow into the liquid-returning area 23, and flows out through a liquid-returning port which is positioned at the lower part of the side wall of the liquid-returning area 23. Generally, the height of the top of the rear return partition 44 determines the height of the liquid level of the liquid accumulated in the space between the rear return partition 44 and the front return partition 43, and also determines the height of the liquid level of the liquid accumulated in the oil removal accumulation area 22. And the higher the liquid level in the degreasing accumulation zone 22, the lower the average flow rate of the liquid in the degreasing accumulation zone 22. A return valve 441 can be arranged on the rear liquid return partition 44 at a proper height from the bottom of the cavity of the oil-water separation tank 2, and the liquid level in the oil removal accumulation region 22 can be adjusted by adjusting the opening degree of the valve port of the return valve 441 and adjusting the flow rate of the liquid flowing into the liquid return region 23 through the rear liquid return partition 44.
In some embodiments of the oil-water separation device of the present invention, as shown in fig. 1 to 3, the oil-water separation device further includes a liquid inlet pipe 1, a liquid return pipe 3, and a waste discharge pipe 9. The liquid inlet pipe 1 and the liquid return pipe 3 are respectively arranged at two ends of the oil-water separation tank 2, and the liquid inlet pipe 1 is connected with the liquid inlet and used for conveying oil-containing liquid to the oil-water separation tank 2 and entering the oil-water separation tank through the liquid inlet; the liquid return pipe 3 is connected with the liquid return port and used for conveying the liquid after oil-water separation to a proper place for recycling. The waste discharge pipe 9 is provided at one side of the oil-water separation tank 2 and connected to a plurality of positions at the bottom of the liquid inlet accumulation region 21, the oil removal accumulation region 22, and the liquid return region 23, respectively. The waste discharge pipe 9 can be provided with a waste discharge valve and a pipe plug, so that liquid in the oil-water separation tank 2 can be emptied through the waste discharge pipe 9 when needed, and the oil-water separation tank 2 is convenient to clean and maintain.
In some embodiments of the oil-water separation device of the present invention, as shown in fig. 1 to 5, an oil scraping device is disposed above the oil removal accumulation region 22, and the oil scraping device may be any mechanical device capable of scraping off grease floating on a liquid surface, and the oil scraping device is capable of reciprocating within the oil removal region 22. An oil sump 24 is provided in the oil-water separation tank 2 on one side of the oil removal accumulation region 22, and the oil sump 24 is a container capable of temporarily containing waste oil. In general, the oil sump 24 may be provided as an elongated oil waste containment area of equal length as the oil removal accumulation area 22, with the oil sump 24 isolated from the oil-water separator tank 2. The oil collecting tank 24 may be disposed inside the oil-water separating tank 2 or outside the oil-water separating tank 2, and the arrangement of the oil collecting tank 24 in the oil-water separating tank 2 may make the layout of the oil-water separating device of the present invention more compact. The scraping device is capable of producing a scraping action in a direction toward sump 24, which scraping action is capable of scraping grease floating on the surface of the liquid toward sump 24 and over the separation between grease accumulation region 22 and sump 24 into sump 24, thereby removing grease from the oily liquid.
In some embodiments of the oil-water separation device of the present invention, as shown in fig. 1 to 5, an oil scraping member is provided on the oil scraping device, and the oil scraping member moves back and forth on the liquid surface of the oil removing accumulation region 22. The oil scraping component is arranged at the position opposite to the oil collecting groove 24, and when the oil scraping component moves towards the oil collecting groove 24, grease on the liquid surface can be scraped towards the oil collecting groove 24 and enters the oil collecting groove 24, so that oil-water separation is realized. The movement direction of the oil scraping component is perpendicular to the flowing direction of the liquid in the oil removing accumulation area 22, so that the direction of the oil scraping component for pushing the grease to move is perpendicular to the movement direction of the grease formed by the flowing of the liquid, and the influence of the flowing of the liquid on the oil scraping effect is reduced.
In some embodiments of the oil-water separating device of the present invention, as shown in fig. 1 to 5, the oil scraping device includes a guide rail 62, an oil scraping plate 61, and a driving device 63. The guide rail 62 is provided above the deoiling accumulation area 22 across the oil-water separation tank 2, and is provided perpendicular to the flow direction of the liquid in the deoiling accumulation area 22. The guide rails 62 are typically provided in two, but are not limited to two. When two guide rails 62 are provided, the two guide rails 62 are respectively provided on the front and rear sides of the degreasing reservoir 22, and are arranged in parallel with each other. A scraper 61 is arranged in the oil removing and accumulating area 22 and is parallel to the flowing direction of the liquid, the scraper 61 is movably arranged on a guide rail 62 and can move along the guide rail 62 under the driving of a driving device 63, and the oil removing and accumulating area 22 produces the oil scraping action perpendicular to the flowing direction of the liquid in the oil removing and accumulating area 22. The lower edge of the oil scraping plate 61 is inserted into the liquid surface of the oil-containing liquid, when the oil scraping plate 61 moves to the side of the oil collecting groove 24 of the oil removing accumulation area 22, the grease on the liquid surface can be scraped to the side of the oil removing accumulation area 22, and can pass through the isolation structure between the oil removing accumulation area 22 and the oil collecting groove 24 under the pushing of the oil scraping plate 61 to enter the oil collecting groove 24, so that the grease in the oil-containing liquid can be removed.
As one embodiment of the oil-water separator of the present invention, as shown in fig. 1 to 5, the driving device 63 includes a driving motor 631 and a lead screw 632. The screw rod 632 crosses the middle of the oil removing accumulation area 22 and is arranged parallel to the guide rail 62, the driving motor 631 is arranged at the end of the screw rod 632, and the rotating shaft of the driving motor 631 is connected with the end of the screw rod 632. The middle of the oil scraping plate 61 is provided with a driving screw hole matched with the screw rod 632, the screw rod 632 is screwed in the driving screw hole, and when the screw rod 632 rotates, the oil scraping plate 61 is pushed to move on the screw rod 632 along the rail 62. By changing the rotation direction of the driving motor 631, the movement direction of the oil scraping plate 61 can be changed, and the oil scraping plate 61 can be moved back and forth on the guide rail 62. Of course, the driving device 63 may use other driving structures such as a cylinder, a hydraulic push rod, an electric push rod, a chain, and a belt.
As shown in fig. 1 to 7, a support frame 7 may be further provided outside the oil-water separation tank 2, and both the driving motor 631 and one end of the guide rail 62 may be mounted on the support frame 7. Thus, the oil scraping plate 61 can be ensured to have a larger moving range under the driving of the screw rod 632, a stable mounting position can be provided for the driving motor 631, and the stable connection between the driving motor 631 and the screw rod 632 is ensured.
As a specific embodiment of the oil-water separator of the present invention, as shown in fig. 7 and 8, an adjustable scraper 611 is attached to the bottom of the oil scraper 61 such that the lower edge of the adjustable scraper 611 is lower than the lower edge of the oil scraper. The mounting position of the adjustable scraper 611 on the oil scraping plate 61 can be adjusted. Specifically, a mounting screw hole may be provided at the lower portion of the oil scraping plate 61, a bar-shaped mounting groove in the up-down direction may be provided at a corresponding position on the adjustable scraper 611, the adjustable scraper 611 is fixed on the oil scraping plate 61 by using a bolt to pass through the mounting screw hole and the bar-shaped mounting groove, and the fixing position of the bolt in the bar-shaped mounting groove is adjusted, so that the mounting position of the adjustable scraper 611 on the oil scraping plate 61 may be adjusted, and the depth of the lower edge of the adjustable scraper 611 inserted below the liquid level of the oil-containing liquid in the oil removing accumulation area 22 is also adjusted, thereby enabling the movement of the oil scraping plate 61 to produce a better oil scraping effect. Further, the liquid level in the degreasing accumulation area 22 varies depending on the amount of the liquid containing oil flowing into the oil-water separation tank 2 through the liquid inlet. When the liquid level in the oil removal accumulation area 22 changes, the installation position of the adjustable scraper 611 on the oil scraping plate 61 can be adjusted, the lower edge of the adjustable scraper 611 is ensured to be inserted into the oil-containing liquid at a certain depth below the liquid level, and a good oil-water separation effect can be realized under the condition of different actual oil-containing liquid flow rates.
As shown in fig. 1 to 6, a waste oil pump 8 may be provided outside the oil sump 24 of the oil-water separation tank 2. The waste oil pump 8 may be a pneumatic diaphragm pump, an electric centrifugal pump, an electric plunger pump, or the like. The inlet of the waste oil pump 8 is connected to the bottom of the oil collecting tank 24, and the waste oil scraped into the oil collecting tank 24 from the liquid level of the oil-containing liquid can be pumped out and sent into the waste oil tank 81 to be treated as dangerous waste in a centralized manner. The waste oil pump 8 and the waste oil tank 81 are arranged to discharge waste oil scraped into the oil collecting tank 24 in time, so that the oil collecting tank 24 can always contain grease scraped by the oil scraping plate 61. This allows a smaller volume of sump 24 to be provided to contain the grease scraped from the grease accumulation area 22, resulting in a smaller size oil water separator device of the present invention.
In some embodiments of the oil-water separation device of the present invention, as shown in fig. 1 to 5, an oil pushing device 5 is provided on the other side of the oil removal accumulation area 22 opposite to the oil sump 24, and an oil scraping device is provided between the oil pushing device 5 and the oil sump 24. The oil pusher 5 is provided with a fluid ejecting means, and is capable of ejecting fluid toward the liquid surface of the degreasing reservoir 22, forming a fluid jet flow toward the oil sump 24 on the surface layer of the liquid, and pushing the grease floating on the liquid surface to move toward the oil sump 24. The oil scraping device is arranged between the oil pushing device 5 and the oil collecting groove 24, and when the oil scraping plate 61 moves towards the oil collecting groove 24 to form an oil scraping action, grease on the liquid surface can be scraped towards the oil collecting groove 24 and enters the oil collecting groove 24 through the isolation structure between the oil removing accumulation area 22 and the oil collecting groove 24, so that the grease in the oil-containing liquid can be removed. When the oil scraping plate 61 moves towards the oil pushing device 5 to form a return action, the oil pushing device 5 can push the grease on the liquid surface to move towards the oil collecting groove 24 and pass through the oil scraping plate 61 to enter the side, adjacent to the oil collecting groove 24, of the oil scraping plate 61, so that the grease can be scraped in the next oil scraping action of the oil scraping plate 61. Therefore, grease can be prevented from being accumulated on one side of the oil pushing device 5 under the pushing of the return action of the oil scraping plate 61, and the oil removing efficiency of the oil scraping device is effectively improved.
In some embodiments of the oil-water separating device of the present invention, as shown in fig. 1 to 7 and 10, the oil pushing device 5 includes a water knife 51, a circulation pump 52, and a circulation water pipe 53. The circulating pump 52 may use an air operated diaphragm pump, an electric centrifugal pump, an electric plunger pump, etc., and an inlet of the circulating pump 52 is connected to a middle position of the cavity of the oil-water separation tank 2 so as to be able to pump a relatively clean liquid having a small oil content from the middle of the cavity. The outlet of the circulating pump 52 is connected to the water jet 51 through the circulating water pipe 53, and the liquid is jetted from the water jet 51 toward the other side of the oil removing accumulation area 22 along a small angle to form a water film which is jetted toward the liquid level of the oil-containing liquid in the oil removing accumulation area 22, and the grease floating on the liquid level is pushed toward the other side of the oil collecting groove 24 of the oil removing accumulation area 22. A water knife 51 is a pipeline with one closed end, a plurality of water outlet seams are arranged on the pipe wall of one side of the pipeline at intervals, and when high-pressure water is injected from the open end of the pipeline, the water is sprayed out from the water outlet seams at the same time to form an integral water film. Because the water film sprayed by the water jet 51 of the invention is the liquid pumped from the oil-water separation tank 2 by the circulating pump 52, an external water source is not needed, and the water in the external water source can be prevented from being mixed into the original oil-containing liquid to cause the change of the chemical parameters of the original oil-containing liquid. In addition, since a special water source does not need to be provided for the water jet 51, the structure of the oil pushing device 5 is simplified, so that the structure of the oil-water separation device of the present invention can be more compact. Of course, the oil pushing device 5 may be an air knife capable of jetting air flow to the liquid surface in the degreasing accumulation area 22. The water jet 51 can jet a water film to push the grease floating on the liquid surface to move towards the oil collecting groove 24 of the oil removing accumulation area 22. When the oil scraping plate 61 returns to the direction of the water knife 51, the grease on the liquid surface on one side (back side) of the oil scraping plate 61 close to the water knife 51 passes over and/or bypasses the oil scraping plate 61 under the pushing of the water film, enters the side of the oil collecting groove 24 of the oil scraping plate 61, and can be scraped in the next oil scraping action of the oil scraping plate 61. This prevents the grease from accumulating on the back side of the oil scraping plate 61 and failing to be scraped by the oil scraping operation of the oil scraping plate 61, and improves the efficiency of removing the grease from the oil-containing liquid. The control device can also control the oil pushing device 5 to work only when the oil scraping plate 61 moves towards the oil pushing device 5 and stop when the oil scraping plate 61 stops or moves towards the oil collecting groove 24, so that the energy consumption of the oil pushing device 5 can be reduced, and the phenomenon that when the oil scraping plate 61 moves towards the oil collecting groove 24 to scrape oil, the water film sprayed by the water knife 51 pushes grease on the liquid surface into the liquid surface to influence the oil scraping effect can be prevented.
As one embodiment of the oil-water separation device of the present invention, as shown in fig. 7 and 9, the separation structure provided between the deoiling accumulation area 22 and the oil sump 24 is an oil baffle 241. An adjustable baffle 242 is installed at the top region of the oil baffle 241, the length of the adjustable baffle 242 is the same as that of the oil baffle 241, and the oil baffle 241 and the adjustable baffle 242 installed on the oil baffle 241 can completely separate the oil removing region 22 and the oil collecting groove 24. The upper edge of the adjustable shift plate 242 is higher than the upper edge of the oil baffle 241, and the installation position of the adjustable shift plate 242 on the oil baffle 241 can be adjusted. Specifically, be provided with the installation screw on the upper portion of oil baffle 241, the bar mounting groove of direction about corresponding position on adjustable baffle 242 is provided with, use the bolt to pass installation screw and bar mounting groove and fix adjustable baffle 242 on oil baffle 241, adjusting bolt is the fixed position in the bar mounting groove, just can adjust the mounted position of adjustable baffle 242 on oil baffle 241, just also adjusted the last border of adjustable baffle 242 for the height of liquid level in deoiling accumulation area 22, thereby can make things convenient for frizing 61 to promote to float in the liquid level grease and cross the last border entering sump 24 of adjustable baffle 242, reach better deoiling effect. Similarly, the installation position of the adjustable baffle 242 on the oil baffle 241 can be adjusted to adapt the height of the isolation structure between the oil collecting tank 24 and the oil removing area 22 to different liquid level heights in the oil removing accumulation area 22, so as to meet the requirement of oil-water separation for oil-containing liquid with different flow rates.
The operation of a preferred embodiment of the oil-water separator of the present invention will be described below by taking as an example the case where the oil-water separator of the present invention is used in an automobile body coating line and a degreasing bath solution used in a degreasing step is subjected to dynamic circulation treatment. In the degreasing treatment process, degreasing bath solution after cleaning the workpiece/body-in-white is conveyed to the oil-water separation tank 2 through the liquid inlet pipe 1, and rapidly flows into the liquid inlet accumulation area 21 from a liquid inlet at the lower part of the oil-water separation tank 2. Because the liquid-feeding partition plate 41 is arranged near the liquid inlet, and the bottom of the liquid-feeding partition plate is in contact with the bottom of the cavity of the oil-water separation tank 2, the degreasing tank liquid entering the liquid-feeding accumulation area 21 turns at the lower part of the liquid-feeding accumulation area 21 under the blocking of the liquid-feeding partition plate 41, and is accumulated in the liquid-feeding accumulation area 21, so that the flow velocity of the degreasing tank liquid is rapidly reduced, and the degreasing tank liquid turns upwards to form a new fluid path distribution. Because the top of the liquid advancing partition plate 41 is lower than the upper edge of the tank body of the oil-water separation tank 2, along with the increase of the liquid amount of the degreasing tank in the liquid inlet accumulation area 21, the degreasing tank liquid can cross the top of the liquid advancing partition plate 41 and enter the area between the liquid advancing partition plate 41 and the liquid backing partition plate 42. The flow area above the forward liquid partition 41 is larger than the flow area of the inlet pipe 1, and therefore the flow velocity of the liquid flow across the top of the forward liquid partition 41 is significantly reduced. Since the top of the rear liquid-feeding partition plate 42 is higher than the top of the front liquid-feeding partition plate 41, the rear liquid-feeding partition plate 42 blocks the liquid flow passing over the top of the front liquid-feeding partition plate 41, the distribution path of the degreasing bath liquid is expanded in the area between the front liquid-feeding partition plate 41 and the rear liquid-feeding partition plate 42, and under the action of the internal pressure of the liquid, the degreasing bath liquid turns downward again at the bottom of the rear liquid-feeding partition plate 42, enters the degreasing accumulation area 22 from the lower part of the degreasing accumulation area 22 through the through-flow gap at the bottom of the rear liquid-feeding partition plate 42, and expands the distribution path of the liquid flow again in the degreasing accumulation area 22, so that stable fluid path distribution with slower flow speed and different flow speeds is formed at different positions above and below the degreasing accumulation area 22. The degreasing bath solution slowly flows towards the liquid return area 23 in the degreasing accumulation area 22, and the arrangement of the liquid return partition plate further ensures that the degreasing bath solution slowly and stably flows in the degreasing accumulation area 22. In the slow flowing process of the degreasing tank liquid, the grease with lower specific gravity in the degreasing tank liquid slowly floats to the liquid surface and is finally gathered to the liquid surface of the degreasing tank liquid. Since the fluid damping communication hole 431 of the front liquid return partition plate 43 is arranged at the lower part of the front liquid return partition plate 43, the degreasing bath solution in the degreasing accumulation area 22 also flows out of the degreasing accumulation area 22 from the lower part of the degreasing accumulation area 22, and thus the degreasing bath solution in the degreasing accumulation area 22 is formed, and the bottom layer has a relatively high flow speed, and the flow path distribution is such that the flow speed is slower as the bottom layer approaches the surface layer. Therefore, in the floating process of the grease, the flow velocity of the degreasing tank liquid is lower and lower, so that the grease can have longer floating time, and the grease in the degreasing tank liquid can be more floating to the liquid level. In addition, because the flow velocity of the surface layer of the degreasing bath solution is the lowest, the grease on the surface layer of the degreasing bath solution can be slowed down to be gathered towards the direction of the liquid return partition plate, the grease is prevented from entering the liquid return area 23 through the liquid return partition plate, and the oil-water separation effect is ensured. Above the degreasing accumulation area 22, the oil scraping plate 61 slides back and forth on the guide rail in the direction perpendicular to the liquid flow under the driving of the driving motor 631, the lower side of the oil scraping plate 61 is inserted under the liquid surface, and when the oil scraping plate 61 moves toward the oil collecting tank 24, the floating oil on the liquid surface is scraped toward the oil collecting tank 24 and passes over the oil baffle 241 to enter the oil collecting tank 24, thereby removing the grease in the degreasing tank liquid. The height of the top of the oil baffle 241 can be adjusted by adjusting the mounting position of the adjustable baffle 242 at the top of the oil baffle 241, so that the oil scraper 61 scrapes floating oil on liquid surfaces with different heights into the oil collecting tank 24. The installation position of the adjustable scraper 611 on the oil scraping plate 61 is adjusted, so that the oil scraping plate 61 can scrape the floating oil on the liquid surfaces with different heights. When the oil scraping plate 61 moves towards the oil pushing device 5, the degreasing bath liquid pumped by the circulating pump 52 from the middle part of the oil-water separation tank 2 is conveyed to the water jet cutter 51 through the circulating water pipe 53, and forms a water film through the water jet cutter 51 to be sprayed towards the liquid level of the degreasing bath liquid in the direction of the oil scraping plate 61, so that the grease on the liquid level at the back side of the oil scraping plate 61 is pushed to pass over and/or bypass the oil scraping plate 61 and enter the side, close to the oil collecting tank 24, of the oil scraping plate 61. When the oil scraping plate 61 moves towards the oil collecting groove 24, the water jet stops spraying, and the oil scraping plate 61 scrapes grease on the liquid level of the degreasing groove liquid, so that the oil scraping effect of the oil scraping plate 61 is improved. The degreased tank liquid after being degreased flows to the liquid return partition area, passes through the fluid damping communication water through hole 431 at the lower part of the front liquid return partition 43 and flows out of the degreasing accumulation area 22. Because the number of the fluid damping communication water through holes 431 is large, the total through flow area is large, and the arrangement of the plurality of fluid damping communication water through holes 431 is uniform, the outflow speed of the degreasing bath solution is slow and uniform, and the slow and stable flow of the degreasing bath solution in the accumulated oil removal area 22 is ensured. Meanwhile, the degreasing bath solution flows out of the degreasing accumulation area 22 from the lower part of the front liquid return partition plate 43, and the degreasing bath solution with higher oil content in the upper layer of the degreasing accumulation area 22 can be prevented from flowing out of the degreasing accumulation area, so that the oil content of the degreasing bath solution in the liquid return area 23 is lower, and the degreasing effect of the oil-water separation device is improved. Because the bottom of the back liquid return partition plate 44 is in contact with the bottom of the cavity of the oil-water separation tank 2, the degreasing tank liquid flowing in through the front liquid return partition plate 43 turns upwards under the blocking of the back liquid return partition plate 44, and the outflow speed of the degreasing tank liquid is slowed down. The degreasing bath solution is accumulated in the area between the front liquid return partition plate 43 and the rear liquid return partition plate 44, and because the top of the rear liquid return partition plate 44 is lower than the upper edge of the bath body of the oil-water separation bath 2, when the degreasing bath solution accumulated in the area between the front liquid return partition plate 43 and the rear liquid return partition plate 44 is accumulated to a certain amount, the degreasing bath solution overflows from the upper edge of the rear liquid return partition plate 44 and enters the liquid return area 23. The back liquid return partition plate 44 is opened, and the degreasing bath solution can also flow through the back liquid return partition plate 44 through the back liquid return valve 441 and enter the liquid return area 23. By adjusting the size of the valve port of the return valve 441, the flow rate of the degreasing bath solution passing through the rear partition 44 can be adjusted, and the liquid level height in the degreasing accumulation area 22 can be adjusted. The degreasing tank liquid with small oil content in the liquid return area 23 flows out rapidly through the liquid return port, and is conveyed to a degreasing treatment process through the liquid return pipe 3, so that the workpiece/body-in-white can be degreased and cleaned. Therefore, the oil-water separation device can ensure that the oil content in the degreasing bath solution is kept within the range of the process requirement through the circular treatment of the degreasing bath solution.
One embodiment of the oil-water separation method of the present invention comprises the steps of:
s10: the oil-containing liquid to be subjected to oil-water separation flows in a diffusion distribution manner, and the liquid flows in a wider range in a diffusion distribution manner, so that the flowing speed of the liquid is reduced, and the flowing of the liquid is more stable. For dynamically and continuously separating oil from water in the oil-containing liquid, the oil and water must be separated in the flowing state of the oil-containing liquid, and the stable liquid flow does not interfere the rising process of the oil and can ensure the effective floating of the oil and water. The diffusion-distributed flow of the oil-containing liquid can be achieved by providing a baffle adjacent to the inlet for the oil-containing liquid. Specifically, a liquid inlet partition plate unit may be disposed in a position adjacent to the liquid inlet in the cavity of the oil-water separation tank 2, so as to partition the oil-water separation tank 2 into a liquid inlet accumulation region 21 adjacent to the liquid inlet and an oil removal accumulation region 22 on the other side of the liquid inlet partition plate unit. Liquid containing is blocked by a liquid inlet accumulation blocking structure on the liquid inlet partition plate unit, so that oil-containing liquid is accumulated in the liquid inlet accumulation area 21, and liquid in the liquid inlet accumulation area 21 is subjected to distribution, diffusion and guide by a liquid inlet path distribution and turning structure on the liquid inlet partition plate unit, so that the liquid is distributed, diffused and flows, and enters the oil removal accumulation area 22 from the bottom of the oil removal accumulation area 22. The oil-containing liquid entering the oil removal accumulation area 22 from the bottom further diffuses and flows in the oil removal accumulation area 22, so that the smooth flow of the oil-containing liquid flow entering the oil removal accumulation area 22 is ensured, the flowing speed of the liquid is further reduced, and the oil in the oil-containing liquid can float up to the liquid level of the liquid due to the lower specific gravity. Meanwhile, as the position of the liquid entering the oil removal accumulation area 22 is positioned at the bottom of the cavity of the oil-water separation tank 2, the liquid in the oil removal accumulation area 22 flows and is distributed to be lower than the flow speed of the liquid at the upper layer than the flow speed of the liquid at the lower layer, so that the flow speed of the liquid layer where the oil is positioned is lower and lower in the oil-containing liquid during the floating process, the oil floats for a longer time, the flow speed of the oil floating on the liquid surface is slowed down to the greatest extent, and the floating oil gathered on the liquid surface is removed conveniently.
S20: so that the liquid in the oil removal accumulation area 22 slowly flows out at a low flow rate, thereby ensuring that the liquid slowly flows in the oil removal accumulation area 22. In the process of slow flowing of the liquid, the oil and fat in the liquid have small specific gravity, the liquid (the main component is water) has large specific gravity, and the oil and the water are not mutually dissolved, so the oil and the fat can slowly float in the liquid, and an oil-floating layer is formed on the liquid surface. The slow flow of the liquid can make the flow of the liquid more stable, reduce the impact of the liquid flow on the grease in the floating process and the floating oil layer on the liquid surface, and increase the retention time of the liquid in the oil removing accumulation area 22, so that the grease in the liquid can float for a longer time. These cause more grease in the liquid to float up to the liquid surface and to accumulate on the liquid surface to form a floating layer, and therefore the amount of grease inside the liquid is greatly reduced, so that the oil and water in the oil-containing liquid in the oil removal accumulation region 22 are no longer mixed together.
S30: the floating oil layer floating on the liquid surface is removed in the oil removing accumulation region 22. The floating oil layer floating on the liquid surface can be removed by using various suitable methods, such as scraping the floating oil layer on the liquid surface by using an oil scraping device, guiding the floating oil layer on the liquid surface out of the oil removal accumulation area 22 by using a drainage structure, and removing the floating oil layer on the liquid surface by adopting a manual skimming method. The removal of the floating oil layer on the liquid surface in the oil removal accumulation region 22 allows the oil in the oil-containing liquid to be removed from the aqueous liquid, thereby achieving oil-water separation.
In some embodiments of the oil-water separation method of the present invention, in step S30, the floating oil layer floating on the liquid surface in the oil accumulation region 22 is removed by scraping the floating oil layer floating on the liquid surface by a method in which the oil scraping member of the oil scraping device moves on the liquid surface. Specifically, a scraper may be disposed above the oil removal accumulation area 22, an oil sump 24 may be disposed on one side of the oil removal accumulation area 22, and a scraper of the scraper may be inserted under the liquid level of the liquid in the oil removal accumulation area 22 and may move toward the oil sump 24 at the surface layer of the liquid, so as to scrape the floating oil layer on the liquid level into the oil sump 24 and remove the floating oil layer in the oil removal accumulation area 22. The scraping member may be moved repeatedly back and forth across the surface of the liquid to scrape a portion of the floating oil layer into the oil sump 24 each time the scraping member is moved in the direction of the oil sump 24, thereby removing the floating oil from the surface of the liquid.
In one embodiment of the oil-water separation method according to the present invention, the movement direction of the oil scraping member is perpendicular to the flow direction of the liquid. The direction of motion of frizing part is mutually perpendicular with the flow direction of liquid, and the motion that can avoid the frizing part on the one hand promotes the oil slick on the liquid level and produces the ascending removal of liquid flow direction, leads to the oil slick to gather at the outflow end of liquid, influences the oil slick effect of frizing device, and on the other hand can be in the oil slick gradually with the oil slick to the in-process that the liquid outflow end slowly drifted, guarantees the effect of scraping of oil slick on the liquid surface layer.
In some embodiments of the oil-water separation method of the present invention, fluid is ejected to the surface layer of liquid in the deoiling reservoir 22 to form a fluid jet before initiating the movement of the oil scraping means of the oil scraping device. Specifically, the oil pushing device 5 may be disposed on the other side of the oil removing accumulation area 22 opposite to the oil collecting tank 24, and before the oil scraping component is started to move, the oil pushing device 5 is started to operate to eject a fluid jet flow to the liquid surface to push the grease floating on the liquid surface to the side of the oil removing accumulation area 22 where the oil collecting tank 24 is located. The oil pushing device 5 comprises a water knife 51 arranged at the other side of the oil removing accumulation area 22, a circulating pump 52 sucks the liquid in the middle of the oil removing accumulation area 22, conveys the liquid to the water knife 51, forms a water film through the water knife 51, sprays the water film to one side of the liquid level in the oil removing accumulation area 22, pushes the oil ester floating on the liquid level to move towards the oil collecting tank 24 at one side of the oil removing accumulation area 22, and forms oil pushing operation. After the oil pushing operation is started, the oil scraping device is started, and when the oil scraping part moves towards the direction of the oil pushing device 5, the floating oil on the liquid surface is pushed by the water film sprayed by the water knife 51, moves towards the oil scraping part, passes over and/or bypasses the oil scraping part, enters the side, close to the oil collecting groove 24, of the oil scraping part more, and the accumulation of the floating oil on the side, close to the oil pushing device 5, of the oil scraping part is reduced. When the oil scraping component moves towards the oil collecting groove 24, floating oil on the liquid surface can be scraped into the oil collecting groove 24 more, so that grease in the liquid can be removed.
In some embodiments of the oil-water separation method of the present invention, the oil scraping member of the oil scraping device is capable of moving back and forth within the oil removal accumulation zone 22 in a direction perpendicular to the flow of the liquid. Specifically, the movement of the oil scraping member includes both the movement in the direction away from the oil pushing device 5, that is, in the direction toward the oil sump 24, and the movement in the direction toward the oil pushing device 5. When the oil scraping component moves towards the oil pushing device 5, the oil pushing device 5 is controlled to spray a water film onto the liquid surface through the water knife 51, so that floating oil on the liquid surface is pushed to move towards the oil scraping component, and passes over and/or bypasses the oil scraping component to enter the side, close to the oil collecting groove 24, of the oil scraping component more, and the floating oil is prevented from being accumulated on the side, close to the oil pushing device 5, of the oil scraping component. When the oil scraping component moves towards the oil collecting groove 24, the oil pushing device 5 is controlled to stop spraying the water film onto the liquid surface, so that the water film is prevented from impacting floating oil on the liquid surface, the gathering of the floating oil under the action of the oil scraping component is influenced, the oil scraping effect of the oil scraping device is further improved, in addition, the working time of the oil pushing device 5 can be reduced, and the energy consumption of the oil pushing device 5 is reduced.
In the description of the present invention, reference to the description of "one embodiment," "some embodiments," "an implementation," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present disclosure, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the specific features in any suitable way, and the invention will not be further described in relation to the various possible combinations in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (21)
1. An oil-water separation device comprises an oil-water separation tank (2) provided with a liquid inlet and a liquid return port, and is characterized in that a tank cavity of the oil-water separation tank (2) is at least divided into a liquid inlet accumulation area (21) and an oil removal accumulation area (22) through a liquid inlet partition plate unit, so that liquid input from the liquid inlet can enter the liquid inlet accumulation area (21) in a working state, flows into the oil removal accumulation area (22) through the liquid inlet partition plate unit for oil removal, and then flows out through the liquid return port; the liquid inlet partition board unit is formed to have a liquid inlet accumulation blocking structure and a liquid inlet path distribution turning structure, so that liquid input by the liquid inlet can be accumulated in the liquid inlet accumulation area (21) through blocking of the liquid inlet accumulation blocking structure, and can be guided by distribution diffusion of the liquid inlet path distribution turning structure after being accumulated in place, and enters the oil removal accumulation area (22) from the bottom of the oil removal accumulation area (22).
2. The oil-water separator according to claim 1, wherein the feed liquid partition unit comprises a feed liquid partition (41) and a feed liquid partition (42) which are arranged in a staggered manner and spaced back and forth, wherein the feed liquid partition (41) is arranged at one side adjacent to the feed liquid accumulation zone (21) and the bottom of the feed liquid partition is in contact with the bottom of the tank cavity so as to form the feed liquid accumulation blocking structure through the feed liquid partition (41); the top of the rear liquid inlet partition plate (42) is higher than the top of the front liquid inlet partition plate (41), a through-flow gap is formed between the bottom of the front liquid inlet partition plate and the bottom of the tank cavity and is lower than the top of the front liquid inlet partition plate (41), so that liquid can enter the oil removal accumulation area (22) from the bottom of the oil removal accumulation area (22) through the top of the front liquid inlet partition plate (41), the interval between the front liquid inlet partition plate (41) and the rear liquid inlet partition plate (42) and the through-flow gap after the liquid inlet accumulation area (21) is accumulated to a certain position, and the liquid inlet path distribution and diversion structure is formed.
3. The oil-water separation device according to claim 1, further comprising a liquid return partition unit, wherein the tank cavity is partitioned into the liquid inlet accumulation area (21), the oil removal accumulation area (22) and the liquid return area (23) by the liquid inlet partition unit and the liquid return partition unit, and a fluid communication damping structure is arranged on the liquid return partition unit, so that the liquid in the oil removal accumulation area (22) can enter the liquid return area (23) through the fluid communication damping structure and further flow out through the liquid return port in an operating state.
4. The oil-water separator according to claim 3, wherein the liquid return partition unit comprises a front liquid return partition (43), the bottom of the front liquid return partition (43) is in contact with the bottom of the tank cavity, and the fluid communication damping structure is arranged at the lower part of the front liquid return partition (43).
5. The oil-water separator according to claim 4, wherein the fluid communication damper structure comprises a plurality of fluid damper communication holes (431) provided at a lower portion of the front liquid return partition (43).
6. The oil-water separator according to claim 4, wherein the liquid return partition unit further comprises a rear liquid return partition (44) disposed at a distance from the front liquid return partition (43), the rear liquid return partition (44) being disposed at a side adjacent to the liquid return area (23); the bottom of the rear liquid return partition plate (44) is in contact with the bottom of the groove cavity, and the top of the rear liquid return partition plate is lower than the top of the front liquid return partition plate (43).
7. The oil-water separator according to claim 3, further comprising a liquid inlet pipe (1), a liquid return pipe (3), and a waste discharge pipe (9), wherein the liquid inlet pipe (1) is connected to the liquid inlet, the liquid return pipe (3) is connected to the liquid return port, and the waste discharge pipe (9) is connected to bottoms of the liquid inlet accumulation area (21), the oil removal accumulation area (22), and the liquid return area (23), respectively.
8. The oil-water separator according to any one of claims 1 to 7, wherein an oil scraping device is disposed above the oil removing accumulation area (22), and an oil collecting tank (24) is disposed on one side of the oil removing accumulation area (22) so that the oil on the surface of the oil removing accumulation area (22) can be scraped into the oil collecting tank (24) by the oil scraping action of the oil scraping device.
9. The oil-water separator according to claim 8, wherein the direction of movement of the oil scraping member of the oil scraping device is set perpendicular to the flow direction of the liquid in the oil removing accumulation area (22) to enable the oil scraping action perpendicular to the flow direction.
10. The oil-water separation device according to claim 9, characterized in that the oil scraping device comprises a guide rail (62), an oil scraping plate (61) and a driving device (63), the guide rail (62) is arranged perpendicular to the flow direction of the liquid in the oil removing accumulation area (22), and the oil scraping plate (61) is mounted on the guide rail (62) and can move along the guide rail (62) under the driving of the driving device (63).
11. The oil-water separator according to claim 10, wherein the driving device (63) comprises a driving motor (631) and a screw rod (632), the screw rod (632) is connected to a rotating shaft of the driving motor (631), and the oil scraper (61) is provided with a driving screw hole matched with the screw rod (632) and screwed on the screw rod (632) through the driving screw hole.
12. The oil-water separator according to claim 10, characterized in that the bottom of the oil scraping plate (61) is provided with an adjustable scraper (611), and the adjustable scraper (611) is adapted to adjust its mounting position on the oil scraping plate (61).
13. The oil-water separator according to claim 8, wherein the bottom of the oil sump (24) is connected to a waste oil tank (81) through a waste oil line, and a waste oil pump (8) is provided on the waste oil line.
14. The oil-water separation device according to claim 8, further comprising an oil pushing device (5), wherein the oil pushing device (5) is arranged at the other side of the oil removing accumulation area (22) opposite to the oil collecting tank (24), and the oil scraping device is arranged between the oil pushing device (5) and the oil collecting tank (24); the oil pushing device (5) comprises a fluid jetting part, so that fluid can be jetted through the fluid jetting part, and therefore a fluid jet flow for pushing floating oil towards the oil collecting groove (24) is formed on the liquid surface layer of the oil removing accumulation area (22).
15. The oil-water separator according to claim 14, characterized in that the oil pushing device (5) comprises a water jet (51), a circulating pump (52) and a circulating water pipe (53), wherein the inlet of the circulating pump (52) is connected with the middle part of the tank cavity to be capable of pumping fluid, and the outlet of the circulating pump (52) is connected with the water jet (51) through the circulating water pipe (53).
16. The oil-water separation device according to claim 14, wherein an oil baffle plate (241) is disposed between the oil collecting tank (24) and the oil removing accumulation area (22), an adjustable baffle plate (242) is disposed on the top of the oil baffle plate (241), and the adjustable baffle plate (242) is adapted to adjust the installation position of the adjustable baffle plate (241).
17. An oil-water separation method is characterized by comprising the following steps:
s10: the liquid to be subjected to oil-water separation is made to flow in a diffusion distribution manner to reduce the flow speed, and enters the oil removal accumulation area from the lower part of the oil removal accumulation area;
s20: reducing the outflow speed of the liquid entering the oil removal accumulation area, prolonging the accumulation time in the oil removal accumulation area, and forming a floating oil layer of a liquid surface layer by utilizing the difference of specific gravity of oil and water;
s30: removing the floating oil layer in the oil removal accumulation area.
18. The oil-water separation method according to claim 17, wherein in step S30, the floating oil layer is scraped off by moving an oil scraping member of an oil scraping device on a surface layer of the liquid.
19. The oil-water separation method according to claim 18, wherein the oil scraping member of the oil scraping device is moved in a direction perpendicular to a flow of the liquid.
20. The method of claim 18, wherein prior to activating the oil scraping member of the oil scraping device, a fluid jet is formed at the liquid surface jet to urge the oil-floating layer toward the side of the oil removal accumulation area, and after the oil pushing operation, the oil scraping member activating the oil scraping device is moved at the liquid surface toward the side to scrape off the oil-floating layer.
21. The method of claim 20, wherein the moving the scraper member includes moving the scraper member away from the oil pusher and moving the scraper member toward the oil pusher, the oil pusher ejecting the fluid jet when the scraper member moves toward the oil pusher, and the oil pusher stopping the ejection when the scraper member moves away from the oil pusher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111011249.9A CN115721969A (en) | 2021-08-31 | 2021-08-31 | Oil-water separation device and oil-water separation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111011249.9A CN115721969A (en) | 2021-08-31 | 2021-08-31 | Oil-water separation device and oil-water separation method |
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| CN115721969A true CN115721969A (en) | 2023-03-03 |
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| CN202111011249.9A Pending CN115721969A (en) | 2021-08-31 | 2021-08-31 | Oil-water separation device and oil-water separation method |
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