CN110668587A - Separation device for immiscible liquid - Google Patents
Separation device for immiscible liquid Download PDFInfo
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- CN110668587A CN110668587A CN201910907776.4A CN201910907776A CN110668587A CN 110668587 A CN110668587 A CN 110668587A CN 201910907776 A CN201910907776 A CN 201910907776A CN 110668587 A CN110668587 A CN 110668587A
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- immiscible liquids
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
Abstract
The invention provides a separation device for immiscible liquids, which comprises a closed container, a first separation device and a second separation device, wherein the closed container is provided with a first inlet, a second inlet, a first outlet and a second outlet; the fan is connected with the switching unit; the switching unit is provided with a first port, a second port, a third port and a fourth port; the buoyancy piece seals the second inlet when rising in the container, and opens the second inlet when falling; the buoyancy piece moves up and down along the guide rail along with the change of the liquid level in the container; a valve controls opening and closing of the first inlet. The invention has the advantages of high separation efficiency and the like.
Description
Technical Field
The invention relates to liquid separation, in particular to a separation device for immiscible liquids.
Background
The cutting fluid is a metal working fluid used for cooling and lubricating metal in cutting, grinding and other processes. They are of various kinds and complicated in composition, and usually contain a base oil, an emulsifier, a rust preventive, and the like. Cutting fluids (mainly water-based cutting fluids) often have problems of miscellaneous oil, particles and the like in use. The miscellaneous oil is mainly brought by a workpiece or leaked from hydraulic oil and guide rail oil of a machine tool. The traditional machine tool is operated by self-carrying oil-water separation, a steel belt oil remover is used for separating oil from used cutting fluid, but the treatment speed is low and the effect is limited, so that a thick oil layer is suspended on the surface of the liquid, and the performance of the cutting fluid is influenced by breeding microorganisms for a long time.
The release agent is an essential auxiliary material in the die-casting production, in the die-casting production process, in order to prolong the service life of a die cavity and enable the die-casting piece to be smoothly demoulded, the surface of the die-casting piece is smooth and clean, the outline is clear and complete, the release agent is required to be sprayed on the die, a large amount of release agent is sprayed on the die in the die-casting production, part of the release agent is evaporated at high temperature and 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 become oil-containing waste liquid, and the oil-containing waste liquid is generally collected.
The degreasing process is a basic process of an automobile coating pretreatment process, and after a white automobile body is welded, a lot of dirty oil including cooling oil, stretch-proofing oil, antirust oil and the like exists on the inner surface, the outer surface and the inner cavity of the automobile body. Problems occur in the degreasing process, which can affect the quality of the electrophoretic paint and further affect the adhesive force and corrosion resistance of the paint film. Along with the increasing of the vehicle passing amount on a production line, the oil content of degreasing fluid is increased, an electrophoresis tank which is not cleaned by dirty oil treatment is polluted, and even a coating workshop stops production and stops working, so that the degreasing tank fluid needs to be taken out for oil-water separation operation.
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 separate the mixed oil mixed in the oil, and common oil-water separation methods include a physical separation method and a chemical separation method, wherein the physical method is to remove the oil mixed in the water by the density difference or adsorption and filtration of the oil and the water, and the main methods include 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.
The following are currently common separation methods:
the disadvantages of the above separation methods are:
1. 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;
2. 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;
3. 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;
4. 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;
5. 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;
6. 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.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the multifunctional separating device for the immiscible liquid, which has the advantages of good separating effect, automation, accurate separation and multiple functions.
The purpose of the invention is realized by the following technical scheme:
the separation device for the immiscible liquid comprises a closed container, wherein the container is provided with a first inlet, a second inlet, a first outlet and a second outlet, and the second inlet, the first outlet and the second outlet are sequentially arranged from top to bottom;
the separation device of immiscible liquids further comprises:
the fan is connected with the switching unit;
a switching unit having a first port, a second port, a third port, and a fourth port; the first port is in selective communication with the second port and the fourth port, and the third port is in selective communication with the second port and the fourth port; the input end of the fan is communicated with the fourth port, and the output end of the fan is communicated with the second port; the first port is communicated with the outside, and the third port is communicated with the second inlet;
the buoyancy piece is used for plugging the second inlet when rising in the container and opening the second inlet when falling;
a guide rail along which the buoyant member moves up and down as the liquid level in the container changes;
a valve controlling opening and closing of the first inlet: when the first port is communicated with the fourth port, and the second port is communicated with the third port, the first inlet is closed; when the first port is communicated with the second port, and the third port is communicated with the fourth port, the first inlet is opened.
Compared with the prior art, the invention has the beneficial effects that:
1. the separation is quick and the effect is good;
the combination of the fan and the switching unit is creatively utilized, so that the pressure in the closed container is adjusted according to the requirement:
when the first port of the switching unit is communicated with the second port and the third port is communicated with the fourth port, the second inlet is in an open state, the valve is automatically opened, the waste liquid enters the closed container through the first inlet, immiscible liquid in the waste liquid is quickly separated, the liquid with lower density floats to the upper layer, the liquid with higher density sinks to the lower layer, the immiscible liquid is quickly separated, and the separation effect is good;
2. automation;
the combination of the buoyancy piece and the second inlet is creatively utilized, so that when the first port of the switching unit is communicated with the second port and the third port is communicated with the fourth port, the valve automatically opens the first inlet, the liquid level in the container rises, the buoyancy piece automatically blocks the second inlet along with the rise of the liquid level in the closed container, the second inlet does not need to be manually closed, and automatic control is realized;
in addition, when the first port of the switching unit is communicated with the fourth port and the third port is communicated with the second port, the buoyancy piece is separated from the second inlet, the valve automatically closes the first inlet, the liquid level in the container descends, so that liquid with higher density at the lower layer in the container is discharged, the liquid can be discharged to a higher position (the position higher than the liquid level), the second inlet does not need to be manually opened, and automatic control is realized;
3. the separation is accurate;
observing the rising of the liquid level in the container and the layering effect of the liquid in real time by using an observation window, wherein when the liquid level does not rise any more and the separation of the immiscible liquid is finished, the first outlet is basically positioned at the boundary of the upper layer liquid and the lower layer liquid, and the upper layer liquid above the first outlet in the container is discharged by using the first outlet;
then, the first port of the switching unit is communicated with the fourth port, the third port is communicated with the second port, the buoyancy piece is separated from the second inlet, and the lower-layer liquid is discharged through the second outlet;
4. the multifunctional function is achieved;
the container can be moved by using the roller; utilize the filter unit, realized the filtration to the waste liquid, held back the particulate matter, guaranteed the cleanliness factor of liquid after the separation.
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 for illustrating the technical solutions 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 device for separating immiscible liquids in accordance with 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. Some conventional aspects have been simplified or omitted for the purpose of teaching the present invention. Those skilled in the art will appreciate that variations or substitutions from these embodiments 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. Thus, 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 schematically shows a schematic configuration of an immiscible liquid separating apparatus according to an embodiment of the present invention, which includes, as shown in fig. 1:
a closed container 11 having a first inlet 21, a second inlet 22, a first outlet and a second outlet, the second inlet, the first outlet and the second outlet being arranged in sequence from top to bottom; the first inlet 21 and the second inlet 22 may be provided in a top wall of the container;
the fan 31, the said fan 31 connects the switching unit 32;
a switching unit 32, the switching unit 32 having a first port, a second port, a third port and a fourth port; the first port is in selective communication with the second port and the fourth port, and the third port is in selective communication with the second port and the fourth port; the input end of the fan is communicated with the fourth port, and the output end of the fan is communicated with the second port; the first port is communicated with the outside, and the third port is communicated with the second inlet;
a buoyancy member 51, such as a floating ball, wherein the buoyancy member 51 blocks the second inlet 22 when ascending in the container and opens the second inlet 22 when descending;
a guide rail 52, along which the buoyancy member 51 moves up and down as the liquid level in the container 11 changes;
a valve 41, said valve 41 controlling the opening and closing of said first inlet 21: when the first port and the fourth port are communicated, and the second port and the third port are communicated, the first inlet 21 is closed; when the first port and the second port are communicated, and the third port and the fourth port are communicated, the first inlet 21 is opened.
In order to achieve the automatic opening and automatic closing of the first inlet, further, the first valve includes:
the closing plate, the closing plate is used for the shutoff first import, sets up in the container, just the one end of closing plate with the container is connected.
To improve the seal between the sealing plate and the first inlet, the sealing plate is further made of a flexible material at the portion contacting the first inlet.
In order to control the discharge of the separated upper layer liquid and lower layer liquid in the container, further, the separation device for immiscible liquids further comprises:
additional valves 42-43 communicating with the first and second outlets, respectively.
In order to retain the particulate matter in the waste liquid, further, the separation device for immiscible liquid further comprises:
and the inlet of the filtering unit 81 is suitable for being communicated with waste liquid, and the outlet of the filtering unit 81 is communicated with the first inlet 21.
In order to restrict the up-and-down movement and the left-and-right movement of the buoyancy piece, further, from top to bottom, the inner diameter R of the area enclosed by the guide rail 51 is not changed or gradually increased, and R is more than or equal to R0，R0Is the outer diameter of the buoyancy member 51.
In order to improve the moving convenience of the separation device, further, the separation device for immiscible liquid further comprises:
a roller 71, the roller 71 being disposed at a bottom of the container 11.
In order to observe the separation effect of the immiscible liquid in real time, further, the separation device of the immiscible liquid further comprises:
and an observation window 61, wherein the observation window 61 is made of a material which can transmit visible light and is arranged on the side wall of the container 11.
Example 2:
examples of applications of the device for separating immiscible liquids according to the embodiment of the present invention include oil-water separation in the treatment of cutting fluid, release agent, and degreasing bath solution.
In the present application example, as shown in fig. 1, the filter unit 81 is disposed at the upper part of the container 11, and a stainless steel filter screen is used, and the filter diameter is not less than 0.1 μm; the waste liquid passes through a filter screen and a first inlet 21 in sequence and then enters the container 11 for separation; a valve 41 is arranged inside said container 11, at the lower side of the first inlet 21; the outer edge of the sealing plate is sleeved with a flexible sealing material, one side of the sealing plate is connected with the inner wall of the container, and in a free state, an included angle between the sealing plate and the first inlet is an acute angle, such as 30 degrees, 45 degrees and 60 degrees, and preferably an acute angle smaller than 45 degrees; the guide rail 52 is of a cylindrical structure with a through hole, so that the inside and the outside of the cylinder are communicated, the inner diameter R is unchanged or gradually increased, and R is more than or equal to R0If R is 1.1R0，R0Is the outer diameter of the buoyancy member, R0≥R1，R1Is the inner diameter of the second inlet; the first outlet and the second outlet are respectively communicated with valves 42-43, and the roller 71 is arranged at the bottom of the container; a transparent observation window 61 is arranged on the side wall of the container near the boundary of the upper layer liquid and the lower layer liquid in the conventional container; the buoyancy member 51 is a float ball.
The operation mode of the separation device for immiscible liquid in the embodiment is as follows:
a liquid inlet step:
the first port of the switching unit 32 is communicated with the second port, the third port is communicated with the fourth port, the fan 31 works, and the second inlet is in an open state; meanwhile, the closing plate descends, the included angle between the closing plate and the first inlet is increased, the valve 41 automatically opens the first inlet 21, and the pressure in the container 11 is smaller than the pressure outside the container;
the waste liquid passes through the filtering unit 81 and then enters the closed container 11 through the first inlet 21, the immiscible liquid in the waste liquid is quickly separated, the liquid with lower density floats to the upper layer, the liquid with higher density sinks to the lower layer, the immiscible liquid is quickly separated, and the separation effect is good;
as the liquid level in the container rises, the floating ball rising in the area enclosed by the guide rail 52 blocks the second inlet 22;
liquid drainage step:
the observation window 61 is used for checking the liquid separation condition and the liquid level rising condition in the container 11 in real time, and after the separation is finished; opening the valve 42 and discharging the supernatant liquid in the container above the first outlet through the first outlet; determining the certainty of the liquid level position in the container, namely the certainty of a boundary between upper-layer liquid and lower-layer liquid, in view of the fact that the liquid inlet amount is basically consistent every time, wherein the first outlet is arranged at the boundary;
after the upper layer liquid is discharged, the first port of the switching unit 32 is communicated with the fourth port, the third port is communicated with the second port, the fan 31 works, the buoyancy piece 51 is separated from the second inlet 22, the sealing plate moves upwards, the included angle between the sealing plate and the first inlet is gradually reduced, the valve automatically closes the first inlet, and the pressure in the container is greater than the pressure outside the container;
the valve 43 is opened, and the second outlet is communicated with the outside; the liquid level in the container 11 is lowered, so that the liquid with higher density in the lower layer in the container is discharged, and the liquid can be discharged to a higher position (a position higher than the liquid level);
the movement of the separating apparatus is effected by means of the rollers 71;
when maintenance is required, the filter unit 81 is opened to clean the particulate matter accumulated on one side of the filter screen.
The benefits achieved according to the application example of the invention are: by using the combination of the fan and the switching unit, the first inlet and the second inlet, the pressure in the container is lower than the external pressure, so that the separation speed and the separation effect of the immiscible liquid in the container are improved; the automatic opening and closing of the first inlet and the second inlet are realized; the position of the first inlet is based on the boundary position of upper layer liquid and lower layer liquid in the container, and the separated upper layer liquid in the container is accurately discharged.
Claims (10)
1. Separation device of immiscible liquids, comprising a closed container, characterized in that: the container is provided with a first inlet, a second inlet, a first outlet and a second outlet, and the second inlet, the first outlet and the second outlet are sequentially arranged from top to bottom;
the separation device of immiscible liquids further comprises:
the fan is connected with the switching unit;
a switching unit having a first port, a second port, a third port, and a fourth port; the first port is in selective communication with the second port and the fourth port, and the third port is in selective communication with the second port and the fourth port; the input end of the fan is communicated with the fourth port, and the output end of the fan is communicated with the second port; the first port is communicated with the outside, and the third port is communicated with the second inlet;
the buoyancy piece is used for plugging the second inlet when rising in the container and opening the second inlet when falling;
a guide rail along which the buoyant member moves up and down as the liquid level in the container changes;
a valve controlling opening and closing of the first inlet: when the first port is communicated with the fourth port, and the second port is communicated with the third port, the first inlet is closed; when the first port is communicated with the second port, and the third port is communicated with the fourth port, the first inlet is opened.
2. The apparatus for separating immiscible liquids as claimed in claim 1, wherein: the first valve includes:
the closing plate, the closing plate is used for the shutoff first import, sets up in the container, just the one end of closing plate with the container is connected.
3. The apparatus for separating immiscible liquids as claimed in claim 2, wherein: the portion of the sealing plate in contact with the first inlet is made of a flexible material.
4. The apparatus for separating immiscible liquids as claimed in claim 1, wherein: the first inlet is provided in a top wall of the container.
5. The apparatus for separating immiscible liquids as claimed in claim 1, wherein: the separation device of immiscible liquids further comprises:
and the additional valve is respectively communicated with the first outlet and the second outlet.
6. The apparatus for separating immiscible liquids as claimed in claim 1, wherein: the separation device of immiscible liquids further comprises:
and the inlet of the filtering unit is suitable for being communicated with waste liquid, and the outlet of the filtering unit is communicated with the first inlet.
7. The apparatus for separating immiscible liquids as claimed in claim 1, wherein: from top to bottom, the inner diameter R of the area enclosed by the guide rail is unchanged or gradually increased, and R is more than or equal to R0，R0Is the outer diameter of the buoyancy member.
8. The apparatus for separating immiscible liquids as claimed in claim 1, wherein: the separation device of immiscible liquids further comprises:
a roller disposed at a bottom of the container.
9. The apparatus for separating immiscible liquids as claimed in claim 1, wherein: the separation device of immiscible liquids further comprises:
and the observation window is made of a material which can transmit visible light and is arranged on the side wall of the container.
10. The apparatus for separating immiscible liquids as claimed in claim 1, wherein: the immiscible liquid is cutting fluid, release agent or degreasing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910907776.4A CN110668587A (en) | 2019-09-24 | 2019-09-24 | Separation device for immiscible liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910907776.4A CN110668587A (en) | 2019-09-24 | 2019-09-24 | Separation device for immiscible liquid |
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| CN110668587A true CN110668587A (en) | 2020-01-10 |
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| CN201910907776.4A Pending CN110668587A (en) | 2019-09-24 | 2019-09-24 | Separation device for immiscible liquid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111825233A (en) * | 2020-08-24 | 2020-10-27 | 兰州交通大学 | Centrifugal water purification and supply device |
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2019
- 2019-09-24 CN CN201910907776.4A patent/CN110668587A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111825233A (en) * | 2020-08-24 | 2020-10-27 | 兰州交通大学 | Centrifugal water purification and supply device |
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