CN213049504U - Demulsification oil-water separation system - Google Patents
Demulsification oil-water separation system Download PDFInfo
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- CN213049504U CN213049504U CN201922459460.1U CN201922459460U CN213049504U CN 213049504 U CN213049504 U CN 213049504U CN 201922459460 U CN201922459460 U CN 201922459460U CN 213049504 U CN213049504 U CN 213049504U
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Abstract
The utility model provides a demulsification oil-water separation system, which comprises a liquid inlet pipe, a demulsification tank and an oil-water separation tank; the overflow port is arranged between the demulsification tank and the oil-water separation tank; the oil absorption unit is arranged in the oil-water separation tank and is positioned at the lower side of the overflow port; the oil absorption unit is arranged on the frame; the first guide rail is arranged in the oil-water separation tank and extends to the collecting tank; the frame is arranged on the first guide rail and moves along the guide rail; the driving unit drives the moving piece; the moving member presses the oil suction unit; the collecting tank is provided with an oil discharge port and is isolated from the oil-water separation tank. The utility model has the advantages of high separation efficiency, low cost, long service life and the like.
Description
Technical Field
The utility model relates to a liquid separation, in particular to breakdown of emulsion formula oil water analytic system.
Background
The industrial oily wastewater contains organic substances harmful to the environment, such as oil, surfactant, organic additive and the like, so that the industrial oily wastewater cannot be discharged randomly without being treated. The industrial oily wastewater is recycled after oil-water separation or discharged after reaching the standard after treatment, which are environmental-friendly measures for treating the industrial oily wastewater. The machining cutting fluid is used for cooling and lubricating metal in cutting, grinding and other machining processes. They are of various kinds and complicated in composition, and usually contain a base oil, an emulsifier, a rust preventive, and the like. The cutting fluid has the functions of cooling, lubricating, cleaning and rust prevention in the processing process of metals and alloys thereof, and the problems of miscellaneous oil, particles, odor and the like frequently appear in the waste cutting fluid after being used in the machining process.
In the process of die casting production, a large amount of release agent is sprayed on a die, part of the release agent is evaporated at high temperature, part of the release agent is adsorbed on the die for consumption, and most of the release agent directly flows into the lower part of the die after being used once to form the oily waste liquid. The cleaning agent is mainly used for degreasing and cleaning various metal workpieces in the electroplating industry, cleaning stubborn heavy oil stains on the surfaces of mechanical equipment and machine tools, degreasing and cleaning in the automobile industry and the like so as to ensure normal use of parts and prevent environmental pollution and subsequent fouling of the parts.
The purification and reuse treatment of the cutting fluid, the release agent and the degreasing agent can save the production and processing cost on one hand, and can reduce the discharge amount of dangerous wastes on the other hand, thereby realizing green and clean production. The main purpose of the purification and reuse treatment is to remove the mixed oil, particles and the bred microorganisms, the common oil-water separation method comprises a physical separation method and a chemical separation method, the physical method is to remove the oil mixed in the water by the density difference or the adsorption and filtration of the oil and the water, and the main methods comprise a heating separation method, a filtration separation method, an air flotation separation method, an ultrafiltration membrane separation method, a reverse osmosis separation method, a coalescence separation method, a centrifugal separation method and the like; the chemical separation method is to realize demulsification through a demulsifier, and the chemical separation method is not generally adopted because the chemical can influence the components of the liquid to be treated and increase the separation difficulty.
Several common oil-water separation methods
In the oil-water separation process, separated oil is generally removed in an overflow mode, in order to avoid that the treated waste liquid overflows along with the oil, the liquid level height of the oil-water separator is generally manually regulated through a U-shaped pipe, when the U-shaped pipe is regulated to be low, water in the oil-water separator is discharged from the U-shaped pipe at the bottom of the pool, the liquid level in the oil-water separator is low, and the floating oil at the upper layer cannot overflow to an oil discharge pipe; when the liquid level of the U-shaped pipe is adjusted to be high, the liquid level in the oil-water separator rises, the upper layer floating oil overflows into the oil discharge pipe to realize oil-water separation, after the oil-water separation is finished, the liquid level of the U-shaped pipe is manually adjusted to be low, and the liquid in the oil-water separator is discharged from the lower part of the oil-water separator through the U-shaped pipe to finish one-time oil discharge operation. (in practice this is the principle of a communicating vessel). At present, a steel belt deoiling machine is provided, oil in an oil-water separator can be carried out through a steel belt, and then the oil is scraped through a scraper on the steel belt deoiling machine.
The industrial oily wastewater has the characteristics of high dispersion stability, complex chemical components, high pollutant concentration, high treatment difficulty and the like. The heating separation method adopts steam or a heating device for demulsification, has simple equipment and less investment, but has poor oil removal effect and large energy consumption; the gravity or air flotation separation is based on different oil-water densities or buoyancy, the method is simple, the oil removal effect is stable, but the required time is long; the coalescence separation increases the oil content dispersed in water through the coarse grained material until the buoyancy is larger than the adhesion force to float, the equipment is simple, the investment is low, the service cycle of the coalescence material is long, but the coalescence filler which is not used is selected according to different oil-containing waste liquid, so the adaptability of the method is greatly reduced; by utilizing the selective permeability principle of the hollow fiber membrane, the oil-water separation effect is good, but part of effective components can be removed simultaneously, the cost is high, the investment is large, and the equipment is complex and difficult to operate; the oil in the solution is absorbed by a lipophilic material for filtration and separation, the effluent has good quality, the equipment is miniaturized and is simple to operate, but the equipment investment is high, and the filter bag of the filter material is difficult to regenerate; the centrifugal separation method utilizes centrifugal force generated by rapid rotation to enable water with high density to flow outwards along a circular path, and oil with low density is thrown to an inner ring and gathers into large oil droplets to float and separate, but the daily maintenance is difficult, and the effective components of the liquid to be treated can be damaged.
Some oil-water separation equipment commonly used in the market at present need to be added with a filtering and sterilizing module besides removing miscellaneous oil, and the number of treatment pools is increased, so that the equipment volume is larger and larger, and the transportation and the mobile treatment of the device are not facilitated. Furthermore, the method is simple. When the miscellaneous oil is removed, the mode of manually adjusting the liquid level of the U-shaped pipe is adopted, the equipment needs to be attended by workers when in operation, the oil-water separator can be conveniently removed from the oil in time, time and labor are wasted, and the discharged oil carries more or less waste liquid due to the fact that the liquid level of the oil-water separator is manually judged and adjusted. The steel belt deoiling machine is adopted, although automatic deoiling can be realized, the steel belt deoiling machine is poor in deoiling effect and low in treatment efficiency, and meanwhile, discharged oil also carries excessive treatment waste liquid.
SUMMERY OF THE UTILITY MODEL
For solving the not enough among the above-mentioned prior art scheme, the utility model provides a demulsification oil-water separation method that processing cost is low, water-oil separation is efficient.
The utility model aims at realizing through the following technical scheme:
the demulsification oil-water separation system comprises a liquid inlet pipe, a demulsification tank and an oil-water separation tank; the demulsification oil-water separation system further comprises:
the overflow port is arranged between the demulsification tank and the oil-water separation tank;
the oil absorption unit is arranged in the oil-water separation tank and is positioned on the lower side of the overflow port;
a frame on which the oil suction unit is disposed;
the first guide rail is arranged in the oil-water separation tank and extends to the collecting tank; the frame is arranged on the first guide rail and moves along the guide rail;
a driving unit driving the moving member;
a moving member that moves to press the oil suction unit;
and the collecting tank is provided with an oil discharge port and is isolated from the oil-water separation tank.
Compared with the prior art, the utility model discloses the beneficial effect who has does:
1. the oil-water separation efficiency is high;
firstly, oil-water separation is realized by using a demulsification technology; furthermore, the oil absorption unit is used for absorbing oil mixed with a small amount of water overflowing after demulsification, and the water flows downwards to gather after passing through the oil absorption unit; in addition, a small amount of oil in the gathered water floats upwards, and the oil layer which rises along with the liquid level finally contacts the oil absorption unit, so that oil-water separation is better realized;
optionally, a bubble generating device is arranged in the oil-water separation tank, bubbles carry oil drops to float upwards, and the oil-water separation effect is further improved;
optionally, a packing layer is arranged at the lower part of the oil absorption unit in the oil-water separation tank, so that floating oil drops gather medium and large oil drops to float upwards, and the oil-water separation effect is further improved;
2. the cost is low, and the service life is long;
after the oil absorption unit is saturated, the oil absorption unit is pushed into the collecting tank, the absorption unit is extruded, the separated oil is collected, and the oil absorption unit such as sponge can be repeatedly used, so that the operation cost is reduced, and the service life is prolonged;
3. the functions are multiple;
the parallel use of the first pipeline with larger inner diameter and the second pipeline with smaller inner diameter effectively adjusts the flow entering the demulsification tank; when a small flow enters, the liquid level in the emulsion breaking tank slowly rises, and oil floating on the upper layer of the liquid level slowly passes through the overflow port, so that excessive water is prevented from entering the oil-water separation tank along with the overflow of the oil, and the oil-water separation efficiency is guaranteed;
the overflow flow is adjusted by utilizing the rotating plate;
the mode adjustment of oil squeezing and oil collecting is realized by utilizing the up-and-down adjustment of the top end position of the part of the communicating pipe, which is positioned outside the oil-water separation tank.
Drawings
The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. As is readily understood by those skilled in the art: these drawings are only intended to illustrate the technical solution of the present invention and are not intended to limit the scope of the present invention. In the figure:
fig. 1 is a schematic diagram of a demulsification oil-water separation system according to an embodiment of the present invention.
Detailed Description
Fig. 1 and the following description depict alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. For the purpose of teaching the present invention, some conventional aspects have been simplified or omitted. Those skilled in the art will appreciate variations or substitutions from these embodiments that will be within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. Accordingly, the present invention is not limited to the following alternative embodiments, but is only limited by the claims and their equivalents.
Example 1:
FIG. 1 is a schematic diagram of a demulsification oil-water separation system according to an embodiment of the present invention, and as shown in FIG. 1, the demulsification oil-water analysis system includes
A liquid inlet pipe, a demulsification tank 21 and an oil-water separation tank 22; these components are prior art in this field, and the detailed structure and operation are not described herein;
an overflow port 41, wherein the overflow port 41 is arranged between the emulsion breaking tank 21 and the oil-water separation tank 22;
an oil suction unit 36, such as an oil suction sponge, wherein the oil suction unit 36 is arranged in the oil-water separation tank 22 and is positioned at the lower side of the overflow port 41;
a frame on which the oil suction unit is disposed;
the first guide rail is arranged in the oil-water separation tank and extends to the collecting tank; the frame is arranged on the first guide rail and moves along the guide rail;
a driving unit driving the moving member;
the moving piece presses the oil suction unit so that the oil absorbed by the oil suction unit is separated and discharged;
and the collecting tank is provided with an oil discharge port and is isolated from the oil-water separation tank.
In order to push and press the oil suction unit, further, the demulsification oil-water separation system further comprises:
the moving piece is connected with the adapter plate, and the adapter plate moving along with the moving piece pushes the oil absorption unit.
For regular movement, further, the demulsification oil-water separation system further comprises:
the second guide rail is arranged on the frame, and the adapter plate is arranged on the second guide rail and moves along the second guide rail.
In order to adjust the flow of the liquid passing through the overflow port, the demulsification oil-water separation system further comprises:
and a rotating plate 35, wherein the rotating plate 35 is rotatably arranged at the overflow port 41, and the flow rate of the liquid passing through the overflow port 41 is adjusted by adjusting the angle of the rotating plate 35 relative to the horizontal plane.
In order to adjust the working mode of the oil-water separation tank, further, the demulsification oil-water separation system further comprises:
and one end of the communication pipe 34 is communicated with the lower part of the oil-water separation tank 22, the other end of the communication pipe is positioned outside the oil-water separation tank 22, and the top end position of the other end is adjustable up and down.
In order to prevent the oil sucking unit from excessively protruding in a direction perpendicular to the moving direction, further, the oil sucking unit is sandwiched between the first portion and the second portion of the frame.
In order to promote the floating of a small amount of oil in the water on the lower side of the oil absorption unit in the oil-water separation tank, the lower part of the oil absorption unit is provided with the packing layer 32, so that small oil drops penetrating through the packing layer 32 are gathered into large oil drops, and the oil-water separation efficiency is improved.
In order to adjust the flow rate of the wastewater entering the emulsion breaking tank, further, the liquid inlet pipe comprises a first pipeline 11 with a larger inner diameter and a second pipeline 15 with a smaller inner diameter which are connected in parallel, and when the wastewater enters the emulsion breaking tank 21, only the first pipeline 11 is opened (or the first pipeline and the second pipeline are opened together); after the demulsification is finished in the demulsification tank 21, only the wastewater with a small flow is introduced into the demulsification tank 21 through the second pipeline 15, and the liquid level in the demulsification tank 21 slowly rises, so that the oil on the upper layer slowly enters the oil-water separation tank 22 through the overflow port 41, and the excessive water is prevented from entering the oil-water separation tank 22 along with the oil.
In order to increase the oil-water separation efficiency in the liquid in the lower part of the oil-water separation tank, further, an air bubble generating device 33 is provided at the bottom of the oil-water separation tank.
Example 2:
according to the utility model discloses breakdown of emulsion formula oil-water separation system's application example, oil-water separation in cutting fluid, release agent, the processing of degreasing bath liquid.
In this application example, as shown in fig. 1, the liquid inlet pipe includes a first pipe 11 with a larger inner diameter and a second pipe 15 with a smaller inner diameter, which are connected in parallel, valves 12 and 14 are respectively disposed on the first pipe 11 and the second pipe 15 to control the on-off of the flow path, and a pump 13 is further disposed on the first pipe 11; the output ends of the first channel 11 and the second pipeline 15 are communicated with the bottom in the demulsification tank;
in the emulsion breaking tank 21: the heater 31 is arranged inside the demulsification tank 21 and below the liquid level; the upper part of the clapboard between the demulsification tank 21 and the oil-water separation tank 22 is provided with an overflow port 41; the overflow mouth 41 department sets up rotatable rotating plate 35, and the contained angle between the relative horizontal plane is variable: the smaller the included angle is, the larger the flow rate through the overflow port 41 is;
in the oil-water separation tank: an oil absorption unit 36 is arranged on the lower side of an overflow port 41 in the oil-water separation tank 22, and oil absorption sponge is adopted in the application example; the oil absorbing sponge is sandwiched between the first and second portions of the frame, the oil and water being able to pass through the frame and the oil absorbing sponge; the frame is arranged on the first guide rail, and the first guide rail extends into the collecting groove from the oil-water separation groove; the adapter plate is vertically arranged between the first part and the second part, and two opposite ends of the adapter plate are arranged on the second guide rail, so that the adapter plate can move along the second guide rail in the forward direction or the reverse direction under the drive of the screw rod to extrude or loosen the oil absorption sponge; the motor drives the screw rod, and the screw rod is connected with the adapter plate so as to convert the rotation of the motor into the translation of the adapter plate; the lower side of the second part is provided with a filler layer 32, and pall rings are filled inside the filler layer; a micro-bubble generating device 33 is arranged at the lower side of the packing layer; one end of the communication pipe 34 communicates with the lower portion of the oil-water separation tank 22, and the other end extends into the liquid return tank 23 outside the oil-water separation tank 22.
The demulsification oil-water separation system of the application example has the working mode that:
the oily wastewater enters the demulsification tank from the bottom at a large flow rate through a first pipeline of the liquid inlet pipe, and then the first pipeline is closed;
a heater in the demulsification tank works to increase the temperature, and the wastewater is demulsified in the demulsification tank to separate oil from water; adjusting the angle of the rotating plate relative to the horizontal plane to zero; only the second pipeline is opened, the oily wastewater enters the emulsion breaking tank at a small flow rate, the liquid level in the emulsion breaking tank slowly rises, and the oil and a small amount of water floating on the liquid level pass through the overflow port and enter the oil-water separation tank;
the oil entering the oil-water separation tank is absorbed by the oil absorption unit, a small amount of water flows downwards through the oil absorption unit, passes through the packing layer and then enters the bottom of the oil-water separation tank, and the liquid level is lower than the oil absorption sponge but higher than the packing layer;
the micro-bubbles generated by the micro-bubble generating device rise in the oil-water separation tank, carry a small amount of small oil drops to rise, and after passing through the filler layer, the small oil drops are gathered into large oil drops and float on the liquid surface;
the top end position of the part of the communicating pipe in the liquid return tank is increased to be higher than the liquid level in the oil-water separation tank, the liquid level in the oil-water separation tank gradually rises and finally contacts with the oil absorption sponge, and the oil on the upper layer of the liquid level contacts with the oil absorption sponge to be absorbed;
then, the top end position is adjusted to be lower than the oil absorption sponge, water at the bottom in the oil-water separation tank enters the liquid return tank through the communicating pipe, and the liquid level in the oil-water separation tank is lower than the oil absorption sponge;
then, pushing the frame, and enabling the frame to enter the collecting groove along the first guide rail; when the motor works, the screw rod is driven to push the adapter plate forward, the oil absorption sponge between the first part and the second part is extruded, and oil is separated from the oil absorption sponge and flows into the collecting tank; then, the motor rotates reversely, the adapter plate moves reversely along the second guide rail, and the oil absorption sponge is restored to the original state.
Example 3:
according to the utility model discloses breakdown of emulsion formula oil-water separation system's application example is different with embodiment 2:
a screw is not used, and a first pulley and a second pulley are respectively arranged on one side of the adapter plate facing the oil absorption unit and one side of the adapter plate backing the oil absorption unit; one end of a first rope is fixed, and the other end of the first rope winds on a rotating shaft of a first motor after winding on a first pulley; one end of a second rope is fixed, and the other end of the second rope winds on a rotating shaft of a second motor after winding on a second pulley;
the working modes of the motor and the rope are as follows:
the second motor rotates in the positive direction, the length of a second rope between the second motor and the fixed point is shortened, and the second rope drags the adapter plate to move in the positive direction along the second guide rail to extrude the oil absorption unit; at the moment, the first motor rotates reversely, and the first rope between the first motor and the fixed point is lengthened;
the first motor rotates forwards, the length of a first rope between the first motor and the fixed point is shortened, the first rope drags the adapter plate to move reversely along the second guide rail, and the absorption unit restores to the original state; at this time, the second motor rotates in the reverse direction, and the second rope between the second motor and the fixed point lengthens.
Claims (5)
1. The demulsification oil-water separation system comprises a liquid inlet pipe, a demulsification tank and an oil-water separation tank; the method is characterized in that: the demulsification oil-water separation system further comprises:
the overflow port is arranged between the demulsification tank and the oil-water separation tank;
the oil absorption unit is arranged in the oil-water separation tank and is positioned on the lower side of the overflow port;
a frame on which the oil suction unit is disposed;
the first guide rail is arranged in the oil-water separation tank and extends to the collecting tank; the frame is arranged on the first guide rail and moves along the guide rail;
a driving unit driving the moving member;
a moving member that moves to press the oil suction unit;
and the collecting tank is provided with an oil discharge port and is isolated from the oil-water separation tank.
2. The demulsification oil-water separation system as claimed in claim 1, wherein: the demulsification oil-water separation system further comprises:
the moving piece is connected with the adapter plate, and the adapter plate moving along with the moving piece pushes the oil absorption unit.
3. The demulsification oil-water separation system as claimed in claim 2, wherein: the demulsification oil-water separation system further comprises:
the second guide rail is arranged on the frame, and the adapter plate is arranged on the second guide rail and moves along the second guide rail.
4. The demulsification oil-water separation system as claimed in claim 1, wherein: the demulsification oil-water separation system further comprises:
the rotating plate is rotatably arranged at the overflow port.
5. The demulsification oil-water separation system as claimed in claim 1, wherein: the demulsification oil-water separation system further comprises:
and one end of the communicating pipe is communicated with the lower part of the oil-water separation tank, the other end of the communicating pipe is positioned outside the oil-water separation tank, and the top end position of the other end of the communicating pipe is adjustable up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922459460.1U CN213049504U (en) | 2019-12-30 | 2019-12-30 | Demulsification oil-water separation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922459460.1U CN213049504U (en) | 2019-12-30 | 2019-12-30 | Demulsification oil-water separation system |
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| Publication Number | Publication Date |
|---|---|
| CN213049504U true CN213049504U (en) | 2021-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922459460.1U Active CN213049504U (en) | 2019-12-30 | 2019-12-30 | Demulsification oil-water separation system |
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| CN (1) | CN213049504U (en) |
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- 2019-12-30 CN CN201922459460.1U patent/CN213049504U/en active Active
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