CN109879368B - Oil-water separation device - Google Patents
Oil-water separation device Download PDFInfo
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- CN109879368B CN109879368B CN201910226149.4A CN201910226149A CN109879368B CN 109879368 B CN109879368 B CN 109879368B CN 201910226149 A CN201910226149 A CN 201910226149A CN 109879368 B CN109879368 B CN 109879368B
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Abstract
The invention discloses an oil-water separation device, which solves the problems of low oil-water separation efficiency, poor separation effect and inconvenient cleaning in the use process in the prior art. The invention comprises a separation box body, an oil-water mixed liquid conveying pipe, a liquid discharge pipe, a buffer area, an oil-water separation area, a buffer baffle, an oil-water separator and a separator liquid discharge pipe; a slow flow channel is formed between the bottom end of the buffer baffle and the inner bottom surface of the separation box body, oil-water mixed liquid in the oil-water mixed liquid conveying pipe sequentially passes through the buffer zone and the slow flow channel to enter the oil-water separation zone and is separated into two parts through the oil-water separator, one part enters the oil-water separator and is discharged outside through a liquid discharge pipe of the separator, and the other part is retained in the oil-water separation zone and is discharged outside through the liquid discharge pipe. The oil-water separator has the advantages of simple structure, scientific and reasonable design, convenience in use, capability of effectively improving the oil-water separation quality and efficiency, good separation effect, detachability and convenience in cleaning.
Description
Technical Field
The invention belongs to the field of sewage treatment, and particularly relates to an oil-water separation device.
Background
With the development of social economy, the oil exploitation industry is rapidly developed, and the frequent oil leakage events follow the development, so that the ecological environment is seriously damaged. In addition, the discharge of a large amount of oily industrial wastewater and domestic sewage brings great trouble to the sewage treatment aspect. Oily wastewater discharged into a water environment can not only pollute water bodies and influence the normal activities of related organisms, but also cause harm to human health. For the treatment of oily wastewater, the oily wastewater is mostly discharged after oil-water separation. At present, the existing oil-water separator has more equipment, but most of the oil-water separator has complex structural design, large occupied area, higher cost and weak practicability, and can cause resource waste to a certain extent. Therefore, it is very important to design an economical and efficient oil-water separation device.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides an oil-water separation device, solves prior art oil-water separation inefficiency, separation effect poor and the inconvenient problem of clearance in the use.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an oil-water separation device comprises a separation box body, an oil-water mixed liquid conveying pipe, a liquid discharge pipe, a buffer baffle plate, an oil-water separator and a separator liquid discharge pipe, wherein the oil-water mixed liquid conveying pipe is connected to the left side wall of the separation box body and used for conveying oil-water mixed liquid into the separation box body;
the top end of the buffer baffle is higher than the liquid level of the oil-water mixed liquid in the separation box, a slow flow channel communicated with the buffer zone and the oil-water separation zone is formed between the bottom end of the buffer baffle and the inner bottom surface of the separation box, the liquid outlet of the oil-water mixed liquid conveying pipe is positioned in the buffer zone and is opposite to the buffer baffle, and the liquid inlet of the liquid discharge pipe is positioned in the oil-water separation zone and is opposite to the buffer baffle; the oil-water mixed liquid in the oil-water mixed liquid conveying pipe sequentially passes through the buffer zone and the slow flow channel to reach the oil-water separation zone and is separated into two parts by the oil-water separator, one part enters the oil-water separator and is discharged outside by the separator liquid discharge pipe, and the other part is retained in the oil-water separation zone and is discharged outside by the liquid discharge pipe.
Furthermore, the oil-water separator comprises a liquid outlet funnel welded on the inner bottom surface of the separation box body, a clamping groove circumferentially arranged at the top of the liquid outlet funnel and used for clamping the oil-water separation membrane, an umbrella rib-shaped support arranged on the clamping groove, and a first oil-water separation membrane fixedly clamped on the clamping groove; the utility model discloses a liquid level separator, including first oil water separating membrane, first rib form support, liquid outlet funnel, separator flowing back pipe, first oil water separating membrane, the joint groove is last equidistance distribute have more than two be used for fixed mounting the mounting hole of first oil water separating membrane, first oil water separating membrane through with mounting hole assorted screw demountable installation be in the joint inslot, rib form support is whole to be the round platform shape, its big diameter end with the joint groove is connected, first oil water separating membrane encircles rib form support a week distributes in order to rib form support with form first separation chamber in the liquid outlet funnel, rib form support's top is higher than the liquid level of the interior oil water mixed liquid of separator box, the separator flowing back pipe with the liquid outlet of liquid outlet funnel is linked together.
Furthermore, the umbrella rib-shaped support comprises a plurality of movable umbrella ribs, the longitudinal section of the umbrella ribs passing through the axial lead is in an equilateral trapezoid shape, and the included angle between any inclined edge of the equilateral trapezoid and the bottom edge changes between 0 and 90 degrees along with the movement of the umbrella ribs; the bottom of the separation box body is provided with an installation opening, the outer wall of the bottom of the liquid outlet funnel is welded with the installation opening, and the two inclined edges of the axial center longitudinal section of the upper opening of the liquid outlet funnel respectively form an included angle of 10-85 degrees with the horizontal plane.
Further, the first oil-water separation membrane is an oleophylic hydrophobic oil-water separation membrane or a hydrophilic oleophobic oil-water separation membrane, when the first oil-water separation membrane is the oleophylic hydrophobic oil-water separation membrane, oil with density smaller than that of water is collected in the oil-water separator, and water and oil with density larger than that of water are retained in the oil-water separation zone; when the first oil-water separation membrane is a hydrophilic oleophobic oil-water separation membrane, water is collected in the oil-water separator, and oil with density smaller than that of water and oil with density larger than that of water are both retained in the oil-water separation zone; the liquid discharge pipe is connected to the upper part of the right side wall of the separation box body and used for discharging water or oil with density smaller than that of water in the oil-water separation area, and the liquid discharge pipe is lower than the top ends of the buffer baffle and the first oil-water separation membrane in the vertical direction.
Further, the oil-water separator is of a hollow structure and comprises a straight-barrel-shaped second oil-water separation membrane, an upper sealing cover and a lower sealing cover, wherein the upper sealing cover is arranged at an opening at the upper end of the second oil-water separation membrane and used for sealing an opening at the upper end of the second oil-water separation membrane, the lower sealing cover is arranged at an opening at the lower end of the second oil-water separation membrane and used for sealing an opening at the lower end of the second oil-water separation membrane, and a second separation cavity is formed among the second oil-water separation membrane, the upper sealing cover and the lower sealing cover;
a liquid outlet through hole is formed in the center of the upper sealing cover, the bottom end of the separator liquid discharge pipe extends into the second separation cavity through the liquid outlet through hole, the bottom end of the separator liquid discharge pipe is close to the top surface of the lower sealing cover, and a water pump for pumping liquid in the second separation cavity outwards is arranged on the separator liquid discharge pipe.
Furthermore, the second oil-water separation membrane is a hydrophilic oleophobic oil-water separation membrane, and is used for filtering water in the oil-water mixed liquid in the oil-water separation zone into the second separation cavity, and oils with densities lower than water and greater than water in the oil-water separation zone are retained in the oil-water separation zone; the pipe diameter of the liquid discharge pipe is 1/2 times of the thickness of the upper sealing cover, and the top end of the liquid discharge pipe is flush with the top surface of the upper sealing cover and is used for discharging oil with density smaller than that of water in the oil-water separation zone; the cross section of the second oil-water separation membrane is circular, oval or square, and the upper sealing cover and the lower sealing cover are both made of polytetrafluoroethylene oleophobic materials.
Further, the right side wall bottom of separator box is equipped with the spill oil groove, the interior bottom surface of separator box with the department that is connected of spill oil groove is equipped with the draw-in groove, the top of spill oil groove is equipped with the baffle that is horizontal distribution, the joint is fixed with can dismantle hydrophobic oleophilic type filter net membrane in the draw-in groove, the top of hydrophobic oleophilic type filter net membrane with the baffle is connected, the spill oil groove passes through hydrophobic oleophilic type filter net membrane with oil water separating zone is linked together, hydrophobic oleophilic type filter net membrane will oil that density ratio water is big is strained in the oil water separating zone is in the spill oil groove.
Further, the bottom of the concave oil groove is communicated with an oil discharge pipe used for discharging oil in the concave oil groove outwards, and the oil discharge pipe is provided with a first stop valve; a liquid collecting box is arranged under the liquid outlet of the liquid discharging pipe, a liquid collecting box liquid discharging pipe is arranged at the lower part of the liquid collecting box, and a second stop valve is arranged on the liquid collecting box liquid discharging pipe.
Furthermore, a liquid level meter is arranged in the separation box body, and an electromagnetic valve connected with the liquid level meter is arranged on the liquid discharge pipe.
Further, the liquid outlet of the oil-water mixed liquid conveying pipe is lower than the top end of the buffer baffle, the hydrophobic oleophilic type filter net film is distributed in an inclined mode, the included angle between the hydrophobic oleophilic type filter net film and the horizontal plane is 30-75 degrees, and the separation box body is made of organic transparent glass or stainless steel materials.
Compared with the prior art, the invention has the following beneficial effects:
the oil-water separator has the advantages of simple structure, scientific and reasonable design, convenience in use, capability of effectively improving the oil-water separation quality and efficiency, good separation effect, detachability and convenience in cleaning.
The oil-water separation device comprises a separation box body, an oil-water separator and a concave oil groove, wherein a buffer baffle is arranged in the separation box body, after oil-water mixed liquid enters a buffer area of the separation box body through an oil-water mixed liquid conveying pipe, the speed and the direction of the oil-water mixed liquid conveyed into an oil-water separation area are changed through the buffer action and the direction changing action of the buffer baffle, the flow speed of the oil-water mixed liquid is slower, the flow direction is perpendicular to the filtering direction, the damage of impact of water flow to a net film is reduced, meanwhile, oil beads or water is prevented from entering the inside of the filter screen due to overlarge water flow, the contact time of the oil beads or the water is prolonged, and the filtering efficiency is improved.
The invention is characterized in that the oil-water mixed liquid entering the oil-water separation zone is separated by an oil-water separator, water or light oil enters the oil-water separator (the oil-water separator uses an oleophylic hydrophobic filter net film, the light oil enters the oil-water separator, the oil-water separator uses a hydrophilic oleophobic filter net film, the water enters the oil-water separator) and is discharged outside, heavy oil and water or light oil are gathered in the oil-water separation zone (the oil-water separator uses an oleophylic hydrophobic filter net film, the heavy oil and water are gathered in the oil-water separation zone, the oil-water separator uses a hydrophilic oleophobic filter net film, the heavy oil and light oil are gathered in the oil-water separation zone), the heavy oil gathered at the bottom of the oil-water separation zone enters a concave oil groove through a hydrophobic oleophylic filter net film and is discharged outside through an oil discharge pipe, thus the oil (light oil) with the density smaller than water and the oil (heavy oil) with the density larger than water can be separated at the same time, has more practical effect.
The oil-water separator comprises a liquid outlet funnel, a clamping groove, an umbrella-shaped support and a first oil-water separation membrane, wherein the umbrella-shaped support is movable, the included angle of the umbrella-shaped support changes between 0 and 90 degrees along with the movement of umbrella ribs, the umbrella-shaped support can be adjusted according to the size of a net membrane, oil-water separation net membranes with different infiltration properties can be installed in the clamping groove, different functions can be given to the device according to different water-oil ratios, and the oil-water separation membrane can be replaced and is convenient to clean; the umbrella-shaped support provides the support for oil-water separation net membranes made of different materials, widens the usable net membrane materials of the device (except that a stainless steel net type shapeable net membrane can be installed, and also can be installed with paper type, fiber type, plastic type and other unshaped net membranes), and widens the application range. The water treatment device has the advantages of low energy consumption, convenient operation and low maintenance cost, realizes the recovery of water, does not need other medicaments in the treatment process, effectively reduces the subsequent water treatment difficulty and cost, and can realize industrial application.
The other oil-water separator comprises a second oil-water separation membrane, an upper sealing cover, a lower sealing cover, a liquid outlet through hole and a water pump, wherein polytetrafluoroethylene sealing covers are arranged at the upper end and the lower end of the second oil-water separation membrane (a hydrophilic and oleophobic oil-water separation membrane), so that oil pollution is reduced, oil is stored at the upper end by arranging an oil outlet and the relative position of the oil outlet, a liquid level meter transmits an electric signal representing the liquid level in a separation box body to an electromagnetic valve, the electromagnetic valve triggers the electromagnetic valve to open and close by depending on the electric signal, automatic oil discharge is realized, the water pump runs at low power, water in the filter can be pumped out, and an oil-water mixture which is not separated can not be pressed into the oil-water separator.
The invention has low energy consumption, convenient operation and low maintenance cost, the first oil-water separation membrane and the second oil-water separation membrane can select a hydrophilic oleophobic oil-water separation membrane or a hydrophobic oleophilic type filter net membrane according to actual conditions, and the invention can be provided with a stainless steel net type shapeable net membrane and paper, fiber and plastic type shapeable net membranes, and the like, and the hydrophobic oleophilic type filter net membrane positioned at the concave oil groove can be detached, thereby effectively enlarging the application range, having no need of other medicaments in the treatment process, effectively reducing the difficulty and cost of subsequent water treatment and realizing industrialized application.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of another embodiment of the present invention (in the figure, two oblique sides of an axial longitudinal section of an upper opening of a liquid outlet funnel respectively form an angle of 30 degrees with a horizontal plane, and an equilateral trapezoidal oblique side of an umbrella frame passing through the axial longitudinal section forms an angle of 50 degrees with a bottom side).
Fig. 3 is a schematic structural view of another embodiment of the present invention (in the figure, two oblique sides of the axial longitudinal section of the upper opening of the liquid outlet funnel respectively form an angle of 30 degrees with the horizontal plane, and an equilateral trapezoidal oblique side of the longitudinal section of the umbrella frame passing through the axial line forms an angle of 70 degrees with the bottom side).
Wherein, the names corresponding to the reference numbers are:
1-separation box body, 2-oil-water mixed liquid conveying pipe, 3-liquid discharging pipe, 4-buffer area, 5-oil-water separation area, 6-buffer baffle, 7-oil-water separator, 8-separator liquid discharging pipe, 9-slow flow channel, 10-liquid discharging funnel, 11-clamping groove, 12-umbrella-shaped bracket, 13-first oil-water separation membrane, 14-mounting hole, 15-concave oil groove, 16-clamping groove, 17-partition plate, 18-hydrophobic oleophilic filter net membrane, 19-oil discharging pipe, 20-first stop valve, 21-liquid level meter, 22-electromagnetic valve, 23-liquid collecting box, 24-liquid collecting box liquid discharging pipe, 25-second stop valve, 26-mounting opening, 71-second oil-water separation membrane, 72-upper sealing cover, 73-lower sealing cover, 74-liquid outlet through hole and 75-water pump.
Detailed Description
The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.
As shown in fig. 1 to 3, the oil-water separation device provided by the invention has the advantages of simple structure, scientific and reasonable design, convenience in use, capability of effectively improving the oil-water separation quality and efficiency, good separation effect, detachability and convenience in cleaning. The oil-water separator comprises a separation box body 1, an oil-water mixed liquid conveying pipe 2 connected to the left side wall of the separation box body 1 to convey oil-water mixed liquid into the separation box body 1, a liquid discharge pipe 3 horizontally connected to the right side wall of the separation box body 1 to discharge liquid in the separation box body 1, a buffer baffle 6 vertically arranged in the separation box body 1 to divide the separation box body 1 into a buffer area 4 and an oil-water separation area 5, an oil-water separator 7 arranged in the separation box body 1 and positioned in the oil-water separation area 5 to separate the oil-water mixed liquid in the oil-water separation area 5, and a separator liquid discharge pipe 8 connected with the oil-water separator 7 to discharge the liquid in the oil-water separator 7.
The top end of the buffer baffle 6 is higher than the liquid level of the oil-water mixed liquid in the separation box body 1, a slow flow channel 9 for communicating the buffer zone 4 with the oil-water separation zone 5 is formed between the bottom end of the buffer baffle 6 and the inner bottom surface of the separation box body 1, the liquid outlet of the oil-water mixed liquid conveying pipe 2 is positioned in the buffer zone 4 and is opposite to the buffer baffle 6, and the liquid inlet of the liquid discharge pipe 3 is positioned in the oil-water separation zone 5 and is opposite to the buffer baffle 6; the oil-water mixed liquid in the oil-water mixed liquid conveying pipe 2 sequentially passes through the buffer zone 4 and the slow flow channel 9 to enter the oil-water separation zone 5 and is separated into two parts by the oil-water separator 7, one part enters the oil-water separator 7 and is discharged outside by the separator liquid discharge pipe 8, and the other part is retained in the oil-water separation zone 5 and is discharged outside by the liquid discharge pipe 3.
The bottom of the right side wall of the separation box body 1 is provided with a concave oil groove 15, a clamping groove 16 is arranged at the connecting part of the inner bottom surface of the separation box body 1 and the concave oil groove 15, a partition plate 17 which is horizontally distributed is arranged at the top of the concave oil groove 15, a detachable hydrophobic oleophilic filter net film 18 is clamped and fixed in the clamping groove 16, the top end of the hydrophobic oleophilic filter net film 18 is connected with the partition plate 17, the concave oil groove 15 is communicated with the oil-water separation zone 5 through the hydrophobic oleophilic filter net film 18, and the hydrophobic oleophilic filter net film 18 filters oil with the density larger than that of water in the oil-water separation zone 5 into the concave oil groove 15.
The bottom of the concave oil groove 15 is communicated with an oil discharge pipe 19 for discharging oil in the concave oil groove 15 outside, and the oil discharge pipe 19 is provided with a first stop valve 20; a liquid collecting box 23 is arranged under the liquid outlet of the liquid discharging pipe 3, a liquid collecting box liquid discharging pipe 24 is arranged at the lower part of the liquid collecting box 23, and a second stop valve 25 is arranged on the liquid collecting box liquid discharging pipe 24. A liquid level meter 21 is arranged in the separation box body 1, and an electromagnetic valve 22 connected with the liquid level meter 21 is arranged on the liquid discharge pipe 3. The liquid outlet of the oil-water mixed liquid conveying pipe 2 is lower than the top end of the buffer baffle 6, the hydrophobic oleophilic filter net film 18 is distributed in an inclined mode, and an included angle between the hydrophobic oleophilic filter net film and the horizontal plane is 30-75 degrees, so that hydraulic pressure can be effectively reduced, the hydrophobic oleophilic filter net film is guaranteed to run safely, and the separation box body 1 is made of organic transparent glass or stainless steel materials.
The oil-water separation device comprises a separation box body, an oil-water separator and a concave oil groove, wherein a buffer baffle is arranged in the separation box body, after oil-water mixed liquid enters a buffer area of the separation box body through an oil-water mixed liquid conveying pipe, the speed and the direction of the oil-water mixed liquid conveyed into an oil-water separation area are changed through the buffer action and the direction changing action of the buffer baffle, the flow speed of the oil-water mixed liquid is slower, the flow direction is perpendicular to the filtering direction, the damage of impact of water flow to a net film is reduced, meanwhile, oil beads or water is prevented from entering the inside of the filter screen due to overlarge water flow, the contact time of the oil beads or the water is prolonged, and the filtering efficiency is improved.
The invention is characterized in that the oil-water mixed liquid entering the oil-water separation zone is separated by an oil-water separator, water or light oil enters the oil-water separator (the oil-water separator uses an oleophylic hydrophobic filter net film, the light oil enters the oil-water separator, the oil-water separator uses a hydrophilic oleophobic filter net film, the water enters the oil-water separator) and is discharged outside, heavy oil and water or light oil are gathered in the oil-water separation zone (the oil-water separator uses an oleophylic hydrophobic filter net film, the heavy oil and water are gathered in the oil-water separation zone, the oil-water separator uses a hydrophilic oleophobic filter net film, the heavy oil and light oil are gathered in the oil-water separation zone), the heavy oil gathered at the bottom of the oil-water separation zone enters a concave oil groove through a hydrophobic oleophylic filter net film and is discharged outside through an oil discharge pipe, thus the oil (light oil) with the density smaller than water and the oil (heavy oil) with the density larger than water can be separated at the same time, has more practical effect.
The oil-water separator 7 comprises a liquid outlet funnel 10 welded on the inner bottom surface of the separation box body 1, a clamping groove 11 circumferentially arranged at the top of the liquid outlet funnel 10 and used for clamping an oil-water separation membrane, an umbrella-shaped bracket 12 arranged on the clamping groove 11, and a first oil-water separation membrane 13 fixedly clamped on the clamping groove 11; the utility model discloses a separation box, including joint groove 11, first oil-water separation membrane 13, rib form support 12, first oil-water separation membrane 13 is used for fixed mounting more than two equidistant distribution more than two mounting holes 14 of first oil-water separation membrane 13, first oil-water separation membrane 13 through with mounting holes 14 assorted screw demountable installation in joint groove 11, rib form support 12 is whole to be the round platform shape, its big diameter end with joint groove 11 is connected, first oil-water separation membrane 13 encircles rib form support 12 a week distributes in order to form first separation chamber in rib form support 12 with play liquid funnel 10, the top of rib form support 12 is higher than the liquid level of the mixed liquid of oil-water in the separation box 1, separator fluid-discharge tube 8 with the liquid outlet of play liquid funnel 10 is linked together.
The umbrella rib-shaped support 12 comprises a plurality of movable umbrella ribs, the longitudinal section of the umbrella ribs passing through the axial lead is in an equilateral trapezoid, and the included angle between any inclined edge of the trapezoid of the equilateral trapezoid and the bottom edge changes between 0 and 90 degrees along with the movement of the umbrella ribs; the bottom of the separation box body 1 is provided with an installation opening 26, the outer wall of the bottom of the liquid outlet funnel 10 is welded with the installation opening 26, and the two inclined edges of the axial center longitudinal section of the upper opening of the liquid outlet funnel 10 respectively form an included angle of 10-85 degrees with the horizontal plane. The first oil-water separation membrane 13 is an oleophylic hydrophobic oil-water separation membrane or a hydrophilic oleophobic oil-water separation membrane, when the first oil-water separation membrane 13 is the oleophylic hydrophobic oil-water separation membrane, oil with density smaller than that of water is collected in the oil-water separator 7, and water and oil with density larger than that of water are retained in the oil-water separation zone 5; when the first oil-water separation membrane 13 is a hydrophilic and oleophobic oil-water separation membrane, water is collected in the oil-water separator 7, and oil with density smaller than that of water and oil with density larger than that of water are both retained in the oil-water separation zone 5; the liquid discharge pipe 3 is connected to the upper part of the right side wall of the separation box 1 and is used for discharging water or oil with density smaller than that of water in the oil-water separation zone 5, and the liquid discharge pipe 3 is lower than the top ends of the buffer baffle 6 and the first oil-water separation membrane 13 in the vertical direction.
The oil-water separator comprises a liquid outlet funnel, a clamping groove, an umbrella rib-shaped support and a first oil-water separation membrane, as shown in figures 2 and 3, the umbrella rib-shaped support is movable, the included angle of the umbrella rib-shaped support changes between 0-90 degrees along with the movement of the umbrella rib, the umbrella rib-shaped support can be adjusted according to the size of a net membrane, oil-water separation net membranes with different infiltration properties can be installed in the clamping groove, different functions can be given to the device according to different water-oil ratios, the oil-water separation membrane can be replaced, and the cleaning is convenient; the umbrella-shaped support provides the support for oil-water separation net membranes made of different materials, widens the usable net membrane materials of the device (except that a stainless steel net type shapeable net membrane can be installed, and also can be installed with paper type, fiber type, plastic type and other unshaped net membranes), and widens the application range. The water treatment device has the advantages of low energy consumption, convenient operation and low maintenance cost, realizes the recovery of water, does not need other medicaments in the treatment process, effectively reduces the subsequent water treatment difficulty and cost, and can realize industrial application.
The oil-water separator 7 is of a hollow structure and comprises a straight cylindrical second oil-water separation membrane 71, an upper sealing cover 72 arranged at an upper end opening of the second oil-water separation membrane 71 and used for sealing an upper end opening of the second oil-water separation membrane 71, and a lower sealing cover 73 arranged at a lower end opening of the second oil-water separation membrane 71 and used for sealing a lower end opening of the second oil-water separation membrane 71, wherein a second separation cavity is formed among the second oil-water separation membrane 71, the upper sealing cover 72 and the lower sealing cover 73. A liquid outlet hole 74 is formed in the center of the upper sealing cover 72, the bottom end of the separator liquid outlet pipe 8 extends into the second separation cavity through the liquid outlet hole 74, the bottom end of the separator liquid outlet pipe 8 is close to the top surface of the lower sealing cover 73, and a water pump 75 for pumping liquid in the second separation cavity to the outside is arranged on the separator liquid outlet pipe 8.
The second oil-water separation membrane 71 is a hydrophilic and oleophobic oil-water separation membrane, the second oil-water separation membrane 71 is used for filtering water in the oil-water mixed liquid in the oil-water separation zone 5 into the second separation cavity, and oils with density lower than that of water and density higher than that of water in the oil-water separation zone 5 are retained in the oil-water separation zone 5; the pipe diameter of the liquid discharge pipe 3 is 1/2 times of the thickness of the upper sealing cover 72, and the top end of the liquid discharge pipe 3 is flush with the top surface of the upper sealing cover 72 and is used for discharging oil with density smaller than that of water in the oil-water separation zone 5; the cross section of the second oil-water separation membrane 71 is circular, oval or square, and the upper cover 72 and the lower cover 73 are both made of polytetrafluoroethylene oleophobic materials.
When oil-water mixture passes through oil-water mixture conveyer pipe and gets into the separation box, effect through buffer baffle, reduce the velocity of flow and change the rivers direction, oil-water mixture stretches to separation box upper portion, the hydrophilic oleophobic oil-water separation membrane of flowing through, inside water got into oil-water separation membrane along the horizontal direction, and the oil (edible oil, lubricating oil etc.) that density ratio water is little were held back in the separation membrane outside and constantly accumulated on separation box upper portion, until level gauge signal trigger solenoid valve, the solenoid valve is opened, oil passes through the fluid-discharge tube and gets into the collection liquid tank, get into the inside water of separation membrane and take out by the water pump. Oil (such as phenyl silicone oil, sulfonated diesel oil and the like) with density higher than that of water is gathered at the bottom of the box body due to gravity, when the oil flows to the oleophylic and hydrophobic net film at the right side of the box body, the oil with density higher than that of the water can permeate the net film, the water is trapped, and the oil permeating the net film enters the concave oil groove and is discharged through the oil discharge pipe.
Another oil-water separator of the invention comprises a second oil-water separation membrane, an upper seal cover, a lower seal cover, a liquid outlet through hole and a water pump, as shown in figure 1, polytetrafluoroethylene seal covers are arranged at the upper end and the lower end of the second oil-water separation membrane (a hydrophilic and oleophobic oil-water separation membrane), oil pollution is reduced, oil is stored at the upper end by arranging an oil outlet and the relative position of the oil outlet, a liquid level meter transmits an electric signal representing the liquid level in a separation box body to an electromagnetic valve, the electromagnetic valve triggers the opening and closing of the electromagnetic valve by the electric signal to realize automatic oil discharge, the water pump runs at low power, water in the filter can be pumped out, and an oil-water mixture which is not separated can be pressed into the oil-water separator.
The invention has low energy consumption, convenient operation and low maintenance cost, the first oil-water separation membrane and the second oil-water separation membrane can select a hydrophilic oleophobic oil-water separation membrane or a hydrophobic oleophilic type filter net membrane according to actual conditions, and the invention can be provided with a stainless steel net type shapeable net membrane, paper type, fiber type, plastic type and other irregular type net membranes, and the hydrophobic oleophilic type filter net membrane positioned at the concave oil groove can be detached, thereby effectively enlarging the application range, having no need of other medicaments in the treatment process, effectively reducing the difficulty and cost of subsequent water treatment and realizing industrialized application.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, but all the insubstantial modifications or changes made within the spirit and scope of the main design of the present invention, which still solve the technical problems consistent with the present invention, should be included in the scope of the present invention.
Claims (6)
1. An oil-water separation device, which is characterized in that: comprises a separation box body (1), an oil-water mixed liquid conveying pipe (2) which is connected on the left side wall of the separation box body (1) and is used for conveying oil-water mixed liquid into the separation box body (1), a liquid discharge pipe (3) which is horizontally connected on the right side wall of the separation box body (1) and is used for discharging liquid in the separation box body (1) outwards, a buffer baffle plate (6) which is vertically arranged in the separation box body (1) and is used for separating the separation box body (1) into a buffer area (4) and an oil-water separation area (5), and an oil-water separator (7) which is arranged in the separation box body (1) and is positioned in the oil-water separation area (5) and is used for separating the oil-water mixed liquid in the oil-water separation area (5), and a separator drain pipe (8) connected with the oil-water separator (7) for discharging the liquid in the oil-water separator (7) to the outside;
the top end of the buffer baffle (6) is higher than the liquid level of the oil-water mixed liquid in the separation box body (1), a slow flow channel (9) communicated with the buffer zone (4) and the oil-water separation zone (5) is formed between the bottom end of the buffer baffle (6) and the inner bottom surface of the separation box body (1), the liquid outlet of the oil-water mixed liquid conveying pipe (2) is located in the buffer zone (4) and is opposite to the buffer baffle (6), and the liquid inlet of the liquid discharge pipe (3) is located in the oil-water separation zone (5) and is opposite to the buffer baffle (6); the oil-water mixed liquid in the oil-water mixed liquid conveying pipe (2) sequentially passes through the buffer zone (4) and the slow flow channel (9) to enter the oil-water separation zone (5) and is separated into two parts by the oil-water separator (7), one part of the oil-water mixed liquid enters the oil-water separator (7) and is discharged outside by the separator liquid discharge pipe (8), and the other part of the oil-water mixed liquid is retained in the oil-water separation zone (5) and is discharged outside by the liquid discharge pipe (3);
the oil-water separator (7) comprises a liquid outlet funnel (10) welded on the inner bottom surface of the separation box body (1), a clamping groove (11) circumferentially formed in the top of the liquid outlet funnel (10) and used for clamping an oil-water separation membrane, a rib-shaped support (12) arranged on the clamping groove (11), and a first oil-water separation membrane (13) fixedly clamped on the clamping groove (11); the oil-water separator is characterized in that more than two mounting holes (14) for fixedly mounting the first oil-water separation membrane (13) are equidistantly distributed in the clamping groove (11), the first oil-water separation membrane (13) is detachably mounted in the clamping groove (11) through screws matched with the mounting holes (14), the rib-shaped support (12) is integrally in a circular truncated cone shape, the large-diameter end of the rib-shaped support is connected with the clamping groove (11), the first oil-water separation membrane (13) is distributed around the rib-shaped support (12) for one circle to form a first separation cavity in the rib-shaped support (12) and the liquid outlet funnel (10), the top end of the rib-shaped support (12) is higher than the liquid level of oil-water mixed liquid in the separation box body (1), and the separator liquid outlet pipe (8) is communicated with the liquid outlet of the liquid outlet funnel (10);
the umbrella rib-shaped support (12) comprises a plurality of movable umbrella ribs, the longitudinal section of the umbrella ribs passing through the axial lead is in an equilateral trapezoid shape, and the included angle between any inclined edge of the equilateral trapezoid shape and the bottom edge changes between 0 and 90 degrees along with the movement of the umbrella ribs; the bottom of the separation box body (1) is provided with an installation opening (26), the outer wall of the bottom of the liquid outlet funnel (10) is welded with the installation opening (26), and the two inclined edges of the axial center longitudinal section of the upper opening of the liquid outlet funnel (10) respectively form an included angle of 10-85 degrees with the horizontal plane.
2. The oil-water separator according to claim 1, wherein: the first oil-water separation membrane (13) is an oleophylic hydrophobic oil-water separation membrane or a hydrophilic oleophobic oil-water separation membrane, when the first oil-water separation membrane (13) is the oleophylic hydrophobic oil-water separation membrane, oil with the density smaller than that of water is collected in the oil-water separator (7), and the water and the oil with the density larger than that of the water are retained in the oil-water separation zone (5); when the first oil-water separation membrane (13) is a hydrophilic and oleophobic oil-water separation membrane, water is collected in the oil-water separator (7), and oil with density smaller than that of water and oil with density larger than that of water are both retained in the oil-water separation zone (5); the liquid discharge pipe (3) is connected to the upper portion of the right side wall of the separation box body (1) and used for discharging water or oil with density smaller than that of the water in the oil-water separation area (5), and the liquid discharge pipe (3) is lower than the top ends of the buffer baffle plate (6) and the first oil-water separation membrane (13) in the vertical direction.
3. The oil-water separator according to claim 1 or 2, wherein: the right side wall bottom of separator box body (1) is equipped with spill oil groove (15), the interior bottom surface of separator box body (1) with spill oil groove (15) department of being connected is equipped with draw-in groove (16), the top of spill oil groove (15) is equipped with baffle (17) that are horizontal distribution, the joint is fixed with in draw-in groove (16) can dismantle hydrophobic oleophilic type filter nethike embrane (18), the top of hydrophobic oleophilic type filter nethike embrane (18) with baffle (17) are connected, spill oil groove (15) are passed through hydrophobic oleophilic type filter nethike embrane (18) with oil water separating zone (5) are linked together, hydrophobic oleophilic type filter nethike embrane (18) will oil that oil water density ratio is big filters in oil water separating zone (5) is gone into in spill oil groove (15).
4. The oil-water separator according to claim 3, wherein: the bottom of the concave oil groove (15) is communicated with an oil discharge pipe (19) for discharging oil in the concave oil groove (15) outwards, and the oil discharge pipe (19) is provided with a first stop valve (20); a liquid collecting box (23) is arranged under the liquid outlet of the liquid discharging pipe (3), a liquid collecting box liquid discharging pipe (24) is arranged on the lower portion of the liquid collecting box (23), and a second stop valve (25) is arranged on the liquid collecting box liquid discharging pipe (24).
5. The oil-water separator according to claim 4, wherein: a liquid level meter (21) is arranged in the separation box body (1), and an electromagnetic valve (22) connected with the liquid level meter (21) is arranged on the liquid discharge pipe (3).
6. The oil-water separator according to claim 5, wherein: the liquid outlet of the oil-water mixed liquid conveying pipe (2) is lower than the top end of the buffer baffle (6), the hydrophobic oleophilic type filter net film (18) is distributed in an inclined mode, the included angle between the hydrophobic oleophilic type filter net film and the horizontal plane is 30-75 degrees, and the separation box body (1) is made of organic transparent glass or stainless steel materials.
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| CN112973191B (en) * | 2021-02-19 | 2022-06-07 | 华侨大学 | Energy-saving continuous automatic oil-water separation device based on single super-hydrophobic metal net |
| CN113003749B (en) * | 2021-03-26 | 2022-08-02 | 郑州科技学院 | Waste water pretreatment device for food processing industry |
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