CN205803406U - A kind of emulsion type lubricant double field associating demulsification and dehydration device - Google Patents
A kind of emulsion type lubricant double field associating demulsification and dehydration device Download PDFInfo
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- CN205803406U CN205803406U CN201620746441.0U CN201620746441U CN205803406U CN 205803406 U CN205803406 U CN 205803406U CN 201620746441 U CN201620746441 U CN 201620746441U CN 205803406 U CN205803406 U CN 205803406U
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- underflow
- demulsification
- cyclone
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Abstract
The utility model discloses a kind of emulsion type lubricant double field associating demulsification and dehydration device, including electric field system and cyclone system；Electric field system includes flow inlet, coarse filter I, oil drain pump I, electric emulsion breaker and surge tank；Cyclone system includes single-screw (single screw) pump, cyclone, overflow tank and underflow tank；Flow inlet, coarse filter I, oil drain pump I, electric emulsion breaker, surge tank, single-screw (single screw) pump and cyclone are sequentially communicated by pipeline；The bottom of described cyclone is provided with underflow opening, and this underflow opening is connected with described underflow tank by pipeline, and the top of underflow tank offers overfall, and this overfall is connected with overflow tank by pipeline；The top of underflow tank and overflow tank is provided with air bleeding valve, and the bottom of described underflow tank is provided with drain valve and draining valve, and the bottom of described overflow tank is provided with draining valve.This utility model can not only leach the impurity such as the silt in lubricating oil, iron filings and moisture, also by two kinds of dehydration techniques of associating, it is achieved oil emulsion breaking emulsion and dewatering speed and the raising of efficiency.
Description
Technical field
This utility model belongs to emulsion type lubricant dehydration technique field, is specifically related to the double field of a kind of emulsion type lubricant and combines brokenly
Breast dehydration device.
Background technology
Lubricating oil, as a kind of fluid lubricant reducing abrasion and controlling friction, is widely used in automobile, machinery, electricity
The industries such as power.In recent years, along with the quick growth of China's industrial economy, the demand of lubricating oil is constantly increased by every profession and trade, mesh
Front China has become world's second largest lubricating oil country of consumption.But, lubricating oil is producing, is transporting, is storing, filling and was using
Journey is easily polluted by water, formed oil emulsion, had a strong impact on the physicochemical property of lubricating oil, cause lubrication property drastically under
Fall so that lubricating system cisco unity malfunction and cause various lubrication trouble, thus cause the potential safety hazard and warp being difficult to predict
Massive losses in Ji.Therefore, develop emulsion type lubricant dewatering purifying equipment, improve the technique bar of sump oil breakdown of emulsion purifying regeneration
Part, the waste oil regeneration reuse of emulsifying, to extending the service life of oil product, recovering the serviceability of oil product, minimizing waste oil generation
And guarantee that equipment runs safety and has important function.As can be seen here, lubricant oil dewatered clean is either in resources conservation still
In terms of environmental conservation the most significant.
Conventional emulsion type lubricant dewatered clean method mainly includes Physical, bioanalysis and chemical method, but all has one
Fixed deficiency: (1) Physical includes sedimentation, centrifuging and vacuum method etc., but these methods to there is efficiency low, energy consumption is big,
The defects such as clean-up effect is undesirable；(2) bioanalysis is due to operating cost height, therefore, it is difficult to become main breaking emulsion and dewatering means；
(3) chemical method is owing to employing demulsifier, changes the composition of oil, the most to a certain extent oil product is created pollution.
Above breaking method, at the equal Shortcomings of the aspect such as dewatering efficiency and energy consumption, i.e. applies single means to be difficult to
The most effectively breakdown of emulsion.Only the breakdown of emulsion that two or more unit operation realizes oil emulsion by optimum organization is taken off
Water, thus the breaking emulsion and dewatering efficiency of oil emulsion is substantially improved, it is only the main flow of future technical advances.
Summary of the invention
For deficiencies of the prior art, the purpose of this utility model is to provide a kind of emulsion type lubricant double field
Associating demulsification and dehydration device, this device can not only leach the impurity such as the silt in lubricating oil, iron filings and moisture, also by ingenious
Ground associating two kinds of dehydration techniques, realize oil emulsion breaking emulsion and dewatering speed and the raising of efficiency on the whole, this utility model for
Meet lube oil purification and regeneration has important practical significance.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of emulsion type lubricant double field associating demulsification and dehydration device, including electric field system and cyclone system；Described electric field
System includes flow inlet, coarse filter I, oil drain pump I, electric emulsion breaker and surge tank；Described flow inlet enters with described coarse filter I
Mouth connection, the outlet of this coarse filter I is connected by the entrance of oil drain pump I with described electric emulsion breaker, and the outlet of this electric emulsion breaker is led to
Piping connects with the entrance of described surge tank, and the outlet of this surge tank connects with described cyclone system；Described eddy flow
System includes single-screw (single screw) pump, cyclone, overflow tank and underflow tank；Pipeline and list are passed through in the outlet of described surge tank after inlet valve
The oil-in connection of screw pump, the oil-out of described single-screw (single screw) pump is connected with two entrances of cyclone by pipeline；Described
The bottom of cyclone is provided with underflow opening, and this underflow opening is connected with described underflow tank by pipeline, the top of described underflow tank
Offering overfall, this overfall is connected with overflow tank by pipeline；Described underflow tank and the top of overflow tank are provided with
Air bleeding valve, the bottom of described underflow tank is provided with drain valve and draining valve, and the bottom of described overflow tank is provided with draining valve.
Further, the outlet of described electric emulsion breaker by oil drain pump II and this electric emulsion breaker entrance connect, formation
Circulation line；Fuel outlet valve and sampling valve it is provided with on described circulation line.
Further, the pipeline between described single-screw (single screw) pump and described cyclone is provided with flow meter and Pressure gauge, should
It is communicated with between the oil-out of single-screw (single screw) pump and its oil-in on return duct and this return duct and is provided with gate valve, above-mentioned flow meter,
Pressure gauge, return duct are collectively forming pressure reducing circuit, with the pressure of the oil plant that regulation carries to described cyclone.
Further, it is communicated with underflow recirculation pipe respectively at described underflow tank and the draining valve of overflow tank and overflow follows again
Endless tube, described underflow recirculation pipe connects with the entrance of overflow recirculation pipe with described coarse filter I；Described underflow recirculation
It is provided with valve on pipe and overflow recirculation pipe.
Further, also including coarse filter III, this coarse filter III is in parallel with described coarse filter I；Described underflow recirculation
Pipe connects with the entrance of overflow recirculation pipe with described coarse filter III.
Further, described electric emulsion breaker includes insulating sleeve, electric demulsification tank and n electrode plate, and n is the integer of >=3；Institute
The electric demulsification tank stated is placed in described insulating sleeve, and its two ends are tightly connected with the two ends of described insulating sleeve；Described
Battery lead plate is arranged between described electric demulsification tank and described insulating sleeve；Described battery lead plate is parallel to each other, and above-mentioned electricity
One end of pole plate is embedded on the inwall of described insulating sleeve in the draw-in groove offered, above-mentioned battery lead plate alternately with high-voltage pulse power source
Positive and negative electrode connect, to form n-1 impulse electric field.
Further, the pipeline between surge tank and single-screw (single screw) pump is provided with coarse filter II.
Further, the pipeline between described electric emulsion breaker and surge tank is additionally provided with oil drain pump III, for institute
State delivering oil in surge tank.
Further, described electric field system and cyclone system are installed on same vehicle frame, and the bottom of this vehicle frame is provided with
Several castors.
Further, described vehicle frame being also equipped with hood-shaped vehicle body, this vehicle body is by described electric field system and eddy flow
System covers in wherein.
For the W/O emulsion that drop particle diameter is less, Liquid-Liquid Separation Hydrocyclone dehydrating effect is the most undesirable.In consideration of it,
Before emulsion type lubricant enters cyclone dehydration, in advance it is carried out high-pressure pulse electric breakdown of emulsion, by big for drop knot fusion in oil,
Thus preferably complete oil-water separation.Its basic ideas are: first use high-pressure pulse electric quickly to realize the little water droplet of emulsion
Knot fusion big, then tie poly-big drop and quickly realize settlement separate under the effect of eddy flow centrifugal field, double associatings, and then
Improve emulsion type lubricant breaking emulsion and dewatering speed and efficiency on the whole.
Compared with prior art, this utility model has the advantages that
1, use in the high-pressure pulse electric part in double field associating breaking emulsion and dewatering technology, i.e. electric emulsion breaker and cyclone
Eddy flow centrifugal field part combination carries out breaking emulsion and dewatering, thus the breaking emulsion and dewatering effect of oil emulsion is substantially improved.
2, high-pressure pulse electric demulsification technology is not only able to set up high-voltage-stable breakdown of emulsion electric field, and avoids interelectrode
High voltage short circuit electric current, solves the scattered problem of more droplet produced due to electrical breakdown, reduces making of demulsifier simultaneously
Consumption and energy consumption.Compared with traditional alternating current and direct current electric demulsification, high-pressure pulse electric breakdown of emulsion more saves electric energy.
3, use high-pressure pulse electric quickly to realize the knot fusion of the little water droplet of emulsion greatly, then tie poly-big drop in rotation
Wandering about as a refugee, it is settlement separate quickly to realize under the effect of psychological field, double associatings, and then improves emulsion type lubricant breaking emulsion and dewatering on the whole
Speed and efficiency
4, device structure is simple, and operation easier is low, it is easy to mounting or dismounting, and maintenance workload is less.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is front view of the present utility model；
Fig. 3 is top view of the present utility model.
In accompanying drawing: 1 castor；2 oil drain pumps I；3 underflow tanks；5 coarse filters I；6 single-screw (single screw) pumps；7 vehicle bodies；
8 surge tanks；9 electric emulsion breakers；11 electrical control cabinets；13 gate valves；15 cyclones.
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is described in further detail.
A kind of emulsion type lubricant double field associating demulsification and dehydration device, including electric field system and cyclone system；Described electric field
System includes flow inlet, coarse filter I 5, oil drain pump I 2, electric emulsion breaker 9 and surge tank 8；Described flow inlet and described coarse filter I
The entrance connection of 5, the outlet of this coarse filter I 5 is connected by the entrance of oil drain pump I 2 with described electric emulsion breaker 9, this electric emulsion breaker 9
Outlet connected by the entrance of pipeline with described surge tank 8, the outlet of this surge tank 8 connects with described cyclone system；
Described cyclone system includes single-screw (single screw) pump 6, cyclone 15, overflow tank and underflow tank 3；The outlet of described surge tank 8 is through oil-feed
Being connected with the oil-in of single-screw (single screw) pump 6 by pipeline after valve, the oil-out of described single-screw (single screw) pump 6 is by pipeline and cyclone 15
The connection of two entrances；The bottom of described cyclone 15 is provided with underflow opening, and this underflow opening is by pipeline with described underflow tank 3 even
Logical, the top of described underflow tank 3 offers overfall, and this overfall is connected with overflow tank by pipeline；Described underflow tank 3
Being provided with air bleeding valve with the top of overflow tank, the bottom of described underflow tank 3 is provided with drain valve and draining valve, and described overflows
The bottom of stream tank is provided with draining valve.
As one preferred embodiment, the outlet of described electric emulsion breaker 9 is by oil drain pump II and this electric emulsion breaker 9
Entrance connection, formed circulation line；Fuel outlet valve and sampling valve it is provided with on described circulation line.
As one preferred embodiment, the pipeline between described single-screw (single screw) pump 6 and described cyclone 15 is arranged
There are flow meter and Pressure gauge, are communicated with on return duct and this return duct between oil-out and its oil-in of this single-screw (single screw) pump 6 and set
Being equipped with gate valve 13, above-mentioned flow meter, Pressure gauge, return duct are collectively forming pressure reducing circuit, carry to described cyclone 15 with regulation
The pressure of oil plant.
As one preferred embodiment, underflow it is communicated with respectively at described underflow tank 3 and the draining valve of overflow tank
Recirculation pipe and overflow recirculation pipe, described underflow recirculation pipe and overflow recirculation pipe connect with the entrance of described coarse filter I 5
Logical；It is provided with valve on described underflow recirculation pipe and overflow recirculation pipe.
As a kind of preferred embodiment, also including coarse filter III, this coarse filter III is in parallel with described coarse filter I 5；
Described underflow recirculation pipe connects with the entrance of overflow recirculation pipe with described coarse filter III.
As one preferred embodiment, described electric emulsion breaker 9 includes insulating sleeve, electric demulsification tank and n cube electrode
Plate, n is the integer of >=3；Described electric demulsification tank is placed in described insulating sleeve, its two ends and the two of described insulating sleeve
End is tightly connected；Described battery lead plate is arranged between described electric demulsification tank and described insulating sleeve；Described battery lead plate
Being parallel to each other, and one end of above-mentioned battery lead plate is embedded on the inwall of described insulating sleeve in the draw-in groove offered, above-mentioned battery lead plate is handed over
Wrong ground is connected with the positive and negative electrode of high-voltage pulse power source, to form n-1 impulse electric field.
As one preferred embodiment, the pipeline between surge tank 8 and single-screw (single screw) pump 6 is provided with coarse filter
Ⅱ。
As one preferred embodiment, the pipeline between described electric emulsion breaker 9 and surge tank 8 is additionally provided with
Oil drain pump III, for delivering oil in described surge tank 8.
As one preferred embodiment, described electric field system and cyclone system are installed on same vehicle frame, should
The bottom of vehicle frame is provided with several castors 1.
As preferred embodiment, described vehicle frame being also equipped with hood-shaped vehicle body 7, this vehicle body 7 is by described
Electric field system and cyclone system cover in wherein.
Electrical control cabinet 11 it is additionally provided with, by wired or wireless mode and oil drain pump I 2-III, electric emulsion breaker on this device
9, single-screw (single screw) pump 6, cyclone 15 and each valve connect, for controlling the flow direction of its work and material.
Time specifically used, first pass through the operating of oil drain pump I 2, pending emulsion type lubricant is sucked, suck oil extraction
Before pump, fluid first can be leached solid large granular impurity therein through coarse filter, noted by fluid by oil drain pump I 2
Enter in electric emulsion breaker 9.
Electric emulsion breaker 9 is mainly made up of battery lead plate, insulating sleeve and electric demulsification tank.Select wear-resisting, corrosion-resistant, service life
Long aluminium oxide copper is as electrode, and design battery lead plate thickness is 2mm, is spaced apart 20mm between two electrode plate often organized, and two
Electrode plate connects the both positive and negative polarity of high-voltage pulse power source respectively, thus forms 20 groups of high-pressure pulse electrics.
Being provided with 21 groups of draw-in grooves in insulating sleeve, be respectively used to place 21 electrode plate, bottom portion of groove does not runs through, for propping up
Support battery lead plate.Due to electric emulsion breaker 9 generally tank body, in the range of making tank body internal emulsification liquid fully be in impulse electric field, insulation
The upper and lower two ends of sleeve are set to disc, and its diameter is identical with tank body internal diameter, and are sealed with inner tank wall by sleeve disk
Process.In view of safety, wanting high-insulation between battery lead plate and tank body, therefore insulating sleeve is adopted made of plastic.
Utilize oil drain pump III by the fluid sucking-off after processed in electric emulsion breaker 9, and inject in surge tank 8, electric emulsion breaker 9
And the pipeline between surge tank 8 is provided with sampling valve, is used for sampling detection, in order to understand the demulsification of fluid.Then
Recycle a single-screw (single screw) pump 6 by the fluid sucking-off in surge tank 8, and fluid is injected in cyclone 15 at a high speed.Surge tank 8 with
In pipeline between single-screw (single screw) pump 6, it is provided with a coarse filter II, again leaches the solid large granular impurity in fluid, prevent solid
Body impurity enters in single-screw (single screw) pump 6.The oil-out of single-screw (single screw) pump 6 is connected by a gate valve 13 with oil-in, can be used for regulation single
The output flow of screw pump 6.In pipeline between single-screw (single screw) pump 6 and cyclone 15, it is provided with flow meters and piezometer, with
It is easy to know and control to input flow and the pressure of cyclone 15 fluid.
The main body of cyclone 15 includes entrance, overflow segment, cylindrical section, conical section and underflow section, at this cyclone 15
Reason is the mixed liquor that oily many water is few, thus overflow diameter is greater than underflow tap diameter.When oil emulsion is from entrance height rapid fire
After entering cyclone 15, quickly form eddy current at cylindrical section, through conical section accelerate centrifugal motion, now, heavy phase liquid (water) due to
Migrated formation contour stealth by bigger centrifugal force to wall, move downward simultaneously, finally in underflow pipe flows into underflow tank 3,
And light phase liquid (oily) moves formation inward eddy under the effect of radial force at axle center, move upward, finally through overflow simultaneously
Bank of tubes enters in overflow tank, it is achieved thereby that oil-water cyclone separates.
Between underflow tank 3, overflow tank and cyclone 15, pipeline is both provided with Pressure gauge, and underflow tank 3 and overflow tank
Top be both provided with vent valve, in preventing tank body, pressure is excessive.It is provided with valve bottom underflow tank 3 and overflow pipe, is used for putting
Go out the fluid in tank body and water.
Breaking emulsion and dewatering effect is there is undesirable in view of the fluid in electric emulsion breaker 9, underflow tank 3 and overflow pipe,
Need again to carry out the situation of breaking emulsion and dewatering, so device is provided with closed circuit, by electric emulsion breaker 9, underflow tank 3 and overflow
Fluid in stream tank re-injects in the oil-in of electric emulsion breaker 9.For having prevented bulky grain solid impurity from entering in oil drain pump I 2,
Fluid in underflow tank 3, overflow tank is introduced into coarse filter I 5 or III.
During actual fabrication, also include an electrical control cabinet 11, can be to high-voltage pulse power source, cyclone by this switch board
15, inlet valve, oil drain pump etc. are controlled, thus control the operating of whole dehydration device.
Above-described embodiment of the present utility model is only for this utility model example is described, and is not to this reality
Restriction with novel embodiment.For those of ordinary skill in the field, the most also may be used
To make change and the variation of other multi-forms.Here cannot all of embodiment be given exhaustive.Every belong to this reality
Obviously changed with what novel technical scheme amplified out or change the row still in protection domain of the present utility model.
Claims (10)
1. emulsion type lubricant double field associating demulsification and dehydration device, it is characterised in that include electric field system and cyclone system；
Described electric field system includes flow inlet, coarse filter I, oil drain pump I, electric emulsion breaker and surge tank；Described flow inlet with
The entrance connection of described coarse filter I, the outlet of this coarse filter I is connected by the entrance of oil drain pump I with described electric emulsion breaker, this electricity
The outlet of emulsion breaker is connected by the entrance of pipeline with described surge tank, and the outlet of this surge tank is with described cyclone system even
Logical；
Described cyclone system includes single-screw (single screw) pump, cyclone, overflow tank and underflow tank；The outlet of described surge tank is through inlet valve
Being connected with the oil-in of single-screw (single screw) pump by pipeline afterwards, the oil-out of described single-screw (single screw) pump passes through two of pipeline and cyclone
Entrance connects；The bottom of described cyclone is provided with underflow opening, and this underflow opening is connected with described underflow tank by pipeline, described
The top of underflow tank offers overfall, and this overfall is connected with overflow tank by pipeline；Described underflow tank and overflow tank
Top is provided with air bleeding valve, and the bottom of described underflow tank is provided with drain valve and draining valve, the bottom of described overflow tank
It is provided with draining valve.
Emulsion type lubricant the most according to claim 1 double field associating demulsification and dehydration device, it is characterised in that described electricity breaks
The outlet of breast device by oil drain pump II and this electric emulsion breaker entrance connect, formation circulation line；On described circulation line
It is provided with fuel outlet valve and sampling valve.
Emulsion type lubricant the most according to claim 1 double field associating demulsification and dehydration device, it is characterised in that described single spiral shell
Flow meter and Pressure gauge it is provided with, the oil-out of this single-screw (single screw) pump and its oil-in on pipeline between bar pump and described cyclone
Between be communicated with on return duct and this return duct and be provided with gate valve, above-mentioned flow meter, Pressure gauge, return duct are collectively forming and reduce pressure back
Road, with the pressure of the oil plant that regulation carries to described cyclone.
Emulsion type lubricant the most according to claim 1 double field associating demulsification and dehydration device, it is characterised in that described underflow
Be communicated with underflow recirculation pipe and overflow recirculation pipe at the draining valve of tank and overflow tank respectively, described underflow recirculation pipe and
Overflow recirculation pipe connects with the entrance of described coarse filter I；It is respectively provided with on described underflow recirculation pipe and overflow recirculation pipe
There is valve.
Emulsion type lubricant the most according to claim 4 double field associating demulsification and dehydration device, it is characterised in that also include coarse filtration
Device III, this coarse filter III is in parallel with described coarse filter I；Described underflow recirculation pipe and overflow recirculation pipe and described coarse filter
The entrance connection of III.
Emulsion type lubricant the most according to claim 1 double field associating demulsification and dehydration device, it is characterised in that described electricity breaks
Breast device includes insulating sleeve, electric demulsification tank and n electrode plate, and n is the integer of >=3；Described electric demulsification tank is placed on described exhausted
In edge sleeve, its two ends are tightly connected with the two ends of described insulating sleeve；Described battery lead plate is arranged on described electric demulsification
Between tank and described insulating sleeve；Described battery lead plate is parallel to each other, and one end of above-mentioned battery lead plate is embedded in described insulation sleeve
In the draw-in groove offered on the inwall of cylinder, above-mentioned battery lead plate is connected with the positive and negative electrode of high-voltage pulse power source alternately, to form n-1
Individual impulse electric field.
Emulsion type lubricant the most according to claim 1 double field associating demulsification and dehydration device, it is characterised in that surge tank with
Coarse filter II it is provided with on pipeline between single-screw (single screw) pump.
Emulsion type lubricant the most according to claim 2 double field associating demulsification and dehydration device, it is characterised in that at described electricity
Oil drain pump III it is additionally provided with, for delivering oil in described surge tank on pipeline between emulsion breaker and surge tank.
Emulsion type lubricant the most according to claim 1 double field associating demulsification and dehydration device, it is characterised in that described electric field
System and cyclone system are installed on same vehicle frame, and the bottom of this vehicle frame is provided with several castors.
Emulsion type lubricant the most according to claim 9 double field associating demulsification and dehydration device, it is characterised in that described car
Being also equipped with hood-shaped vehicle body on frame, described electric field system and cyclone system are covered in wherein by this vehicle body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620746441.0U CN205803406U (en) | 2016-07-15 | 2016-07-15 | A kind of emulsion type lubricant double field associating demulsification and dehydration device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620746441.0U CN205803406U (en) | 2016-07-15 | 2016-07-15 | A kind of emulsion type lubricant double field associating demulsification and dehydration device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109868157A (en) * | 2019-03-15 | 2019-06-11 | 重庆工商大学 | A kind of double-field coupled dehydration device and parameter optimization method |
| CN111349457A (en) * | 2020-04-10 | 2020-06-30 | 重庆工商大学 | High-voltage pulse electric field-cyclone centrifugal field combined lubricating oil demulsification dehydration device |
-
2016
- 2016-07-15 CN CN201620746441.0U patent/CN205803406U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109868157A (en) * | 2019-03-15 | 2019-06-11 | 重庆工商大学 | A kind of double-field coupled dehydration device and parameter optimization method |
| CN109868157B (en) * | 2019-03-15 | 2021-05-25 | 重庆工商大学 | Double-field coupling dehydration device and parameter optimization method |
| US11135529B1 (en) | 2019-03-15 | 2021-10-05 | Chongqing Technology And Business University | Parameter optimization method for double-field coupling dehydrator |
| CN111349457A (en) * | 2020-04-10 | 2020-06-30 | 重庆工商大学 | High-voltage pulse electric field-cyclone centrifugal field combined lubricating oil demulsification dehydration device |
| CN111349457B (en) * | 2020-04-10 | 2022-01-28 | 重庆工商大学 | High-voltage pulse electric field-cyclone centrifugal field combined lubricating oil demulsification dehydration device |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161214 Termination date: 20180715 |