CN203342396U - Efficient hot-air-source evaporator - Google Patents
Efficient hot-air-source evaporator Download PDFInfo
- Publication number
- CN203342396U CN203342396U CN 201320296560 CN201320296560U CN203342396U CN 203342396 U CN203342396 U CN 203342396U CN 201320296560 CN201320296560 CN 201320296560 CN 201320296560 U CN201320296560 U CN 201320296560U CN 203342396 U CN203342396 U CN 203342396U
- Authority
- CN
- China
- Prior art keywords
- evaporator
- hot air
- evaporator shell
- long pulse
- hot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model relates to an efficient hot-air-source evaporator used for treating different fluid materials such as sewage and flowing sludge which are required to be concentrated, evaporated, or dried. The efficient hot-air-source evaporator comprises an energy transmitter and a material ejector which are mounted in an evaporator housing, wherein a material inlet is formed in the evaporator; a hot air guide ring and material guide hoppers are mounted below the material ejector in the evaporator housing; longitudinal long-pulse high-power wall material vibration exciters are mounted outside the evaporator housing; the longitudinal long-pulse high-power wall material vibration exciters and the material ejector are in connection control with a long-pulse control generator; a port of the hot air guide ring is connected with hot air pipelines outside the evaporator housing; a material outlet is formed at the lower end of the evaporator housing; and material transmission equipment is arranged at the lower end of the material outlet. The evaporator can continuously convert a flowing material required to be dried into a required result once (a procedure), is simple in structure, small in standalone size, small in floor area, maintenance-free during operation, very low in energy dissipation, high in evaporation efficiency, high in speed, large in drying quantity and wide in application field, and has no requirement on media required to be dried.
Description
Technical field
The utility model relates to evaporimeter, particularly a kind of hot air source high efficiency evaporimeter.
Background technology
Sewage and kind of waste water are various, and characteristic is ever-changing, and sewage and method of wastewater treatment are varied.Some waste water, owing to containing the high concentration salinity, can't biochemical treatment or other way process, can only adopt the evaporation desalination to process; Also some waste water can pass through evaporation and concentration, and the material in waste water is turned waste into wealth.For example biochemical industry, chemical industry of inorganic salt, food industry, the useful resources such as the cellulose contained in the industrial wastewaters such as meat packing, paper-making industry, alcohol, sugar, albumen, the acid of nitrogen base, inorganic salts, it is harmful throwing away, taking-up is precious, administering waste water will be by Resource Access useful in waste water out, waste water becomes steam condensate (SC) by evaporation, is that waste water is not useless, realizes cleaner production and zero discharge of industrial waste water truly.Adopt in practice at present multiple-effect evaporation technique, multiple-effect evaporation+drying process or multiple-effect evaporation+crystallization processes to dispose of sewage or waste water, make water after evaporation process reach the discharge standard of national regulation.According to the characteristics of brine waste, tube-type down-flow evaporator and forced circulation crystallizing evaporator etc. is used widely, and tube-type down-flow evaporator is mainly used in the concentrated of waste water, and crystallizing evaporator is mainly used in the crystallization of brine waste.
The problem that above-mentioned existing equipment exists:
1, heat exchange efficiency is low, and above-mentioned evaporation equipment heat exchange is all wall-type heat exchange, is evaporated medium and heat source-contacting surface long-pending little, has caused heat exchange efficiency low, and this is that the device structure problem determines, the heat transfer effect problem can't solve at all.
2, the problem of fouling can't solve, and above-mentioned evaporation equipment is a global difficult problem in the problem of running fouling, can't be resolved always, and this is also that the device structure problem causes.Dirt is hot non-conductor, at the script heat exchange efficiency, on not high equipment, ties the athermanous dirt of one deck again, and the heat exchange efficiency of visible the said equipment is just lower, and the waste of the energy is just self-evident.Yet, on market, also do not have the equipment of fouling never to occur at present, above-mentioned evaporation equipment still evaporates the main product of industry.
3, must stop production process incrustation scale, according to the difference of vapo(u)rization system technique be evaporated the difference of medium, some evaporation equipment operations cleaning that must stop production in several hours, what have is no more than several days and must stops production cleaning.In cleaning, having part evaporimeter water to rinse just can deal with problems, but mostly is just can deal with problems by the method for pickling, this not only the wasting manpower and material resources, affect the production quality and quantity, and caused great environmental pollution and personal safety hidden danger.
The utility model content
The purpose of this utility model is to provide a kind of hot air source high efficiency evaporimeter, mainly solve the existing technical problem of above-mentioned prior art, the utility model can change the flowable materials of needs drying disposable (i.e. a flow process) into need result continuously; The utility model device structure is simple, the unit volume is little, and floor space is little, in service non-maintaining, power consumption is extremely low, evaporation efficiency is high, speed is fast, dry amount is large, to the medium no requirement (NR) of needs drying, application is extensive.
For achieving the above object, the technical solution of the utility model is:
A kind of hot air source high-efficiency evaporator, for the treatment of sewage, mobile mud etc. need the various fluid foods of concentrated or evaporation drying, it is characterized in that, it is included in inner energy transmitter and the material injector of installing of evaporator shell, charging aperture is installed on evaporimeter, hot blast guide ring and material diversion bucket are installed below the material injector in evaporator shell, the high-power wall material of vertical long pulse vibrator is installed in the outside of evaporator shell, vertically the high-power wall material of long pulse vibrator is connected control with the material injector with the long pulse control generator, the interface of hot blast guide ring is connected with the hot air duct of evaporator shell outside, there is discharging opening the evaporator shell lower end, there is material transferring equipment the discharging opening lower end.
Described hot air source high-efficiency evaporator is characterized in that: by described parts, form the following functions unit:
The material spraying system: this system consists of control cables, energy transmitter, energy amplifier, material injector; Wherein: the signal of telecommunication that the energy transmitter provides the long pulse control generator by control cables changes the extensional vibration of high frequency machinery into, by energy amplifier, mechanical vibrational energy is amplified, the high-frequency resonant that finally keeps the material injector, be about to the mechanical energy that electric energy is converted to high frequency extensional vibration;
Material activating system: at least comprise vertical long pulse high-power wall material vibrator and long pulse control generator, vertically the high-power wall material of long pulse vibrator is arranged on the outer appropriate location of evaporator shell, and weld with evaporator shell, its effect is to guarantee evaporator shell and material diversion bucket, and the hardware be connected with evaporator shell keeps the dither state when normal operation;
The material diversion system: the material diversion bucket by several tapers forms, cone mouth and the welding of evaporator shell inwall on the material diversion bucket, and the shell outer wall at weld bond place is equipped with the high-power wall material of vertical long pulse vibrator;
Hot-air system: formed by hot blast guide ring and hot air duct;
Material-transporting system: material-transporting system is belt conveyor or conveying worm.
Described hot air source high-efficiency evaporator, it is characterized in that: in described material diversion system, the material diversion bucket has several ventilation slots on the wall of cone bucket, and ventilation slot is provided with striker plate, can guarantee to ventilate, can prevent that again material from directly falling in ventilation slot.
Described hot air source high-efficiency evaporator is characterized in that: in described hot-air system, have several upwards ventilating openings of 45 degree on the hot blast guide ring, radially have a certain degree, guarantee that the hot blast field in shell is rotation and the wind field that larger buoyancy is arranged.
Described hot air source high-efficiency evaporator is characterized in that: have multistage material injector and hot blast guide ring, multistage material diversion bucket in described evaporator shell, at the high-power wall material of the multistage vertical long pulse of evaporator shell peripheral hardware vibrator.
Described hot air source high-efficiency evaporator is characterized in that: on described hot air duct and evaporator shell, be provided with insulation material.
The utlity model has following advantage:
The one, guarantee that evaporimeter is in running fouling never.
The 2nd, the surface area of guaranteeing to be evaporated medium improves hot blast and is evaporated the area contacted enlarge 300 times (even more) in being evaporated process more than, realizes the effect of efficient rapid evaporation.
The 3rd, equipment of the present utility model is in operation non-maintaining, does not have the problem of stopping production, can preserve for a long time the steady and continuous operation.
The 4th, the utility model simple in equipment, floor space is little, energy consumption is extremely low.
The 5th, evaporation technology is simple, can control hot blast rate and inlet amount, can obtain the medium that is evaporated of different moisture content, also can disposablely just become dry powder or dry material to the medium entered from charging aperture be evaporated to outlet.
The 6th, the medium that can evaporate is in extensive range, not only can evaporate various sewage, various waste water, also can evaporate mud and evaporation of seawater, simultaneously also can be used for making various dry powder.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of material spraying system in the utility model.
Fig. 3 is the structural representation of material diversion bucket in the utility model.
Fig. 4 is the structural representation of the ventilating opening of material diversion bucket in the utility model.
Fig. 5 is the structural representation of hot blast guide ring in the utility model.
In figure: the 1-evaporator shell, the 2-charging aperture, 3-energy transmitter, 4-material injector, 5-long pulse control generator, the high-power wall material of the vertical long pulse of 6-vibrator, 7-material diversion bucket, 8-hot air duct, 9-hot blast guide ring, 10-material transferring equipment, 31-control cables, 32-energy amplifier.
The specific embodiment
The utility model relates to a kind of evaporimeter of hot blast as thermal source of applying, and it comprises a series of parts of assembling inside and outside evaporator shell according to certain process sequence.As shown in Figure 1, in the inner appropriate location of evaporator shell 1, being equipped with can transmitter 3 and material injector 4, and charging aperture 2 is installed on uppermost evaporimeter, in the middle of material injector 4 and hot blast guide ring 9 and material diversion bucket 7 be installed bottom.Several are installed in the appropriate location, outside of evaporator shell 1 the high-power wall material of vertical long pulse vibrator 6, and vertically the control of the high-power wall material of long pulse vibrator 6 and material injector 4 is provided by the long pulse control generator 5 of connected special use.In the inner appropriate location of evaporator shell 1, hot-air system is installed, hot-air system is comprised of hot blast guide ring 9 and hot air duct 8, and the interface of hot blast guide ring 9 is connected with the hot air duct 8 of evaporator shell 1 outside.There is discharging opening evaporator shell 1 lower end, and there is material transferring equipment 10 the discharging opening lower end.Suitable insulation material all on the parts such as hot air duct 8 and evaporator shell 1.
In the utility model can transmitter 3 be electric energy to be transformed into to the equipment of mechanical energy, and material commonly used is piezoceramic material and magnetostriction materials at present.Above-mentioned material, under the high frequency power signal function, can synchronously change the signal of telecommunication into the mechanical oscillation signal of same frequency.Material injector 4 is a kind of special conical structures, be connected with energy converter by ultrasonic transformer, under the effect of transmitter, producing high-frequency mechanical vibration, the sewage or the material that drop on taper seat upspring, because the acceleration of upspringing is larger, similar spray regime.Long pulse control generator 5 can adopt utility model patent " full-automatic ultrahigh-power ultrasonic antiscale, the apparatus for eliminating sludge " (patent No.: ZL201110077881.3) of Shanghai Xingquan Electric Power Technology Co., Ltd.Vertically the high-power wall material of long pulse vibrator 6 is to take magnetostriction materials closely to be connected as the wall of core by ultrasonic transformer and evaporimeter, form a vibration whole, under the control of long pulse control generator 5, this vibrator sends the very dither energy of high acceleration, this energy passes to the wall of evaporimeter, the vibration that makes wall produce the high frequency short arc, with any material that can not bond on the wall of guaranteeing evaporimeter.Hot blast guide ring 9 is made by general iron pipe, is installed with the standby inwall that is processed into annular and evaporimeter by volume and links together, and on ring, has air vent.Energy amplifier 32 refers to a kind of equipment that energy that can transmitter is amplified, and also is called ultrasonic transformer, requires the ultrasonic transformer material to answer that acoustic resistance is little, thermal losses is low, fatigue resistance is high.Ultrasonic transformer material commonly used is 45 steel and tool steel at present.
By above-mentioned parts, the utility model product formation following functions unit:
The material spraying system: as shown in Figure 2, this system consists of Special control cable 31, energy transmitter 3, energy amplifier 32, material injector 4.Wherein: the signal of telecommunication that energy transmitter 3 provides long pulse control generator 5 by Special control cable 31 changes the extensional vibration of high frequency machinery into, by energy amplifier 32, mechanical vibrational energy is amplified, the high-frequency resonant that finally keeps material injector 4, be about to the mechanical energy that electric energy is converted to high frequency extensional vibration.Purpose makes to flow to material moment generation atomization or the injection under the effect of high frequency mechanical energy on material injector 4, and moment enlarges the surface area that is dried or evaporates material, improves heat exchange efficiency.
The material activating system: at least comprise the high-power wall material of vertical long pulse vibrator 6 and long pulse control generator 5, vertically the high-power wall material of long pulse vibrator 6 is arranged on the outer appropriate location of evaporator shell 1, and and evaporator shell 1 welding.Its effect is to guarantee evaporator shell 1 and material diversion bucket 7, and the hardware be connected with evaporator shell 1 keeps the dither state when normal operation, purpose make to fall on evaporator shell 1 shell wall and material diversion bucket 7 on material can not adhere to above, the cleaning that keeps wall, more crucial is to carry out secondary excitation to material, the contact area of raising and hot blast, improve evaporation efficiency.
The material diversion system: the material diversion bucket 7 by several tapers forms (as shown in Figure 3), according to position difference in evaporimeter, and its length difference, upper cone mouth and evaporator shell 1 inwall welding.The shell outer wall at weld bond place is equipped with the high-power wall material of vertical long pulse vibrator 6.As Fig. 4, have several ventilation slots on the wall of cone bucket, ventilation slot is provided with striker plate, can guarantee to ventilate, and can prevent that again material from directly falling in ventilation slot.Its effect is that the material dropped on material diversion bucket 7 is inspired secondly again, under the hot blast effect come in bottom, carries out redrying and evaporation, improves evaporation efficiency.
Hot-air system: by hot blast guide ring 9(as shown in Figure 5) and hot air duct 8 form, have several upwards ventilating openings of 45 degree on hot blast guide ring 9, radially have a certain degree, guarantee that the hot blast field in shell is rotation and the wind field that larger buoyancy is arranged.Its effect is the different material of disintegrate-quality and is increased in the time that space suspends, improves evaporation efficiency.
Material-transporting system: material-transporting system 10 can be the equipment such as belt conveyor or conveying worm, and its effect is that dry material is transported to other places in time, guarantees the normal operation continuously of this evaporimeter.
Evaporimeter of the present utility model material injector 4 when normal operation all is in normal duty with the vertical high-power wall material of long pulse vibrator 6, is in a kind of high-frequency resonant state, has very high kinetic energy.
Be evaporated material and flow into material injector 4 from charging aperture 2, upspring by the energy of dither, similar injected the same, because kinetic energy is very large, being evaporated material moment is atomized or is crashed to pieces, and is suspended in internal tank, also has partial material to be excited on evaporator shell 1 inwall.Because evaporator shell 1 inside has been full of the high wind with certain wind speed.The water vapour be atomized or the material be crashed to pieces, its surface area is very large, and running into can flash evapn after high warm air.For example, when 10 microns of drop diameters, evaporation time is about 0.23 second.So just determined that this evaporimeter has extraordinary evaporation efficiency and evaporation rate.
In the situation that inlet amount is more, if only have a stage material injector, being not enough to a charging all evaporates or material is become to dry powder, these just need to be according to actual conditions, the multistage material injector 4 of design and hot blast guide ring 9, multistage material diversion bucket 7 in shell, at the high-power wall material of the multistage vertical long pulse of shell peripheral hardware vibrator 6.
The material be not evaporated after first order material injector 4 is processed, can drop on the material diversion bucket 7 of the first order, due to this material diversion bucket 7 in the hot blast environment, its temperature is higher, also has ventilating opening on material diversion bucket 7 cone bucket faces, hot blast can pass through, and the cone bucket also has the mechanical oscillation of high frequency simultaneously.The material dropped like this on the cone bucket can be upspring, be excited, then heats and evaporate, and due to the cone bucket, all the time at the dither state, guarantees that the cone bucket can any medium of adhesion.While on the cone bucket, moving to the position of outlet, be again the entrance of second level material injector 4, be injected into again space, evaporate for the second time in hot blast.If do not reach requirement, can carry out third level evaporation.
In evaporation process, the air quantity of hot blast guide ring 9 can be regulated and be kept at an angle and carry out the tangent line air-out along center, its purpose increases suspending power, maintains the material that is atomized or excites long in the time of space suspension, is conducive to the time of contact of material and hot blast.
In evaporation process, because moisture is heavier, material is easy to be bonded on the shell inwall, and this is the insurmountable problem of general evaporimeter, and the material activating system in the utility model can be guaranteed can not glue any material on the evaporator shell inwall.
The hot blast source of using in the utility model can be hot air boiler, can be also waste heat of boiler tail gas, and wind-warm syndrome is preferably in 150 ℃～200 ℃, and air quantity is controlled according to inlet amount.
Be only preferred embodiment of the present utility model in sum, not be used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modify, all should be technology category of the present utility model.
Claims (6)
1. a hot air source high-efficiency evaporator, for the treatment of sewage, mobile mud etc. need the various fluid foods of concentrated or evaporation drying, it is characterized in that, it is included in inner energy transmitter (3) and the material injector (4) of installing of evaporator shell (1), charging aperture (2) is installed on evaporimeter, in evaporator shell (1), material injector (4) below is equipped with hot blast guide ring (9) and material diversion bucket (7), in the outside of evaporator shell (1), the high-power wall material of vertical long pulse vibrator (6) is installed, vertically the high-power wall material of long pulse vibrator (6) is connected control with material injector (4) with long pulse control generator (5), the interface of hot blast guide ring (9) is connected with the hot air duct (8) of evaporator shell (1) outside, there is discharging opening evaporator shell (1) lower end, there is material transferring equipment (10) the discharging opening lower end.
2. hot air source high-efficiency evaporator according to claim 1 is characterized in that: by described parts, form the following functions unit:
The material spraying system: this system consists of control cables (31), energy transmitter (3), energy amplifier (32), material injector (4); Wherein: the signal of telecommunication that energy transmitter (3) provides long pulse control generator (5) by control cables (31) changes the extensional vibration of high frequency machinery into, by energy amplifier (32), mechanical vibrational energy is amplified, the high-frequency resonant that finally keeps material injector (4), be about to the mechanical energy that electric energy is converted to high frequency extensional vibration;
Material activating system: at least comprise the high-power wall material of vertical long pulse vibrator (6) and long pulse control generator (5), vertically the high-power wall material of long pulse vibrator (6) is arranged on the outer appropriate location of evaporator shell (1), and and evaporator shell (1) welding, its effect is to guarantee evaporator shell (1) and material diversion bucket (7), and the hardware be connected with evaporator shell (1) keeps the dither state when normal operation;
The material diversion system: the material diversion bucket (7) by several tapers forms, the upper cone mouth of material diversion bucket (7) and the welding of evaporator shell (1) inwall, and the shell outer wall at weld bond place is equipped with the high-power wall material of vertical long pulse vibrator (6);
Hot-air system: formed by hot blast guide ring (9) and hot air duct (8);
Material-transporting system: material-transporting system (10) is belt conveyor or conveying worm.
3. hot air source high-efficiency evaporator according to claim 2, it is characterized in that: in described material diversion system, material diversion bucket (7) has several ventilation slots on the wall of cone bucket, ventilation slot is provided with striker plate, can guarantee to ventilate, can prevent that again material from directly falling in ventilation slot.
4. hot air source high-efficiency evaporator according to claim 2, it is characterized in that: in described hot-air system, have several upwards ventilating openings of 45 degree on hot blast guide ring (9), radially have a certain degree, guarantee that the hot blast field in shell is rotation and the wind field that larger buoyancy is arranged.
5. according to claim 1 or 2 or 3 or 4 described hot air source high-efficiency evaporators, it is characterized in that: there is multistage material injector (4) and hot blast guide ring (9), multistage material diversion bucket (7) in described evaporator shell (1), at evaporator shell (1) peripheral hardware multistage vertical long pulse high-power wall material vibrator (6).
6. according to claim 1 or 2 or 3 or 4 described hot air source high-efficiency evaporators, it is characterized in that: on described hot air duct (8) and evaporator shell (1), be provided with insulation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320296560 CN203342396U (en) | 2013-05-27 | 2013-05-27 | Efficient hot-air-source evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320296560 CN203342396U (en) | 2013-05-27 | 2013-05-27 | Efficient hot-air-source evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203342396U true CN203342396U (en) | 2013-12-18 |
Family
ID=49742338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320296560 Withdrawn - After Issue CN203342396U (en) | 2013-05-27 | 2013-05-27 | Efficient hot-air-source evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203342396U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103239877A (en) * | 2013-05-27 | 2013-08-14 | 上海兴全电力技术有限公司 | High-efficiency hot air source evaporator |
-
2013
- 2013-05-27 CN CN 201320296560 patent/CN203342396U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103239877A (en) * | 2013-05-27 | 2013-08-14 | 上海兴全电力技术有限公司 | High-efficiency hot air source evaporator |
| CN103239877B (en) * | 2013-05-27 | 2015-05-13 | 上海兴全电力技术有限公司 | High-efficiency hot air source evaporator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102059070B (en) | Hydraulic/ultrasonic coupling cavitation device | |
| NO171539B (en) | PROCEDURE FOR SEPARATION OF SUBSTANCES CONTAINED IN A FLUID, AND APPARATUS FOR EXECUTION OF THE PROCEDURE | |
| CN107555698B (en) | Rapid evaporation system and method for high-concentration concentrated solution | |
| CN107555699B (en) | Rapid evaporation system and method for high-salinity wastewater | |
| CN102423640B (en) | Integrated membrane module including on-line ultrasonic monitoring and cleaning | |
| CN103239877B (en) | High-efficiency hot air source evaporator | |
| CN203342396U (en) | Efficient hot-air-source evaporator | |
| CN204624698U (en) | A kind of negative-pressure vacuum feedway | |
| CN206747150U (en) | A kind of hinge type ultrasound wave descaling and sound composite cleaning system | |
| CN206897161U (en) | A kind of flue gas waste heat recovery system and a kind of high-efficiency desulfurization Tower System | |
| CN112759017A (en) | Efficient anti-scaling and heat exchange plate-enhanced falling film evaporation system and application method thereof | |
| CN103239879B (en) | High-efficiency evaporator with hot vapor source | |
| CN104241610A (en) | Surface acidification method and device for lead-acid storage battery pole plates | |
| CN104645916A (en) | Near sound field ultrasonic reactor | |
| CN102773021A (en) | Method for prolonging cleaning period of immersed ultra filtration membrane | |
| CN114526621B (en) | Heat pipe heat exchange device for flue gas temperature control music early warning | |
| CN108392997A (en) | A kind of list Cavity bubble generation device and manufacturing method | |
| CN201880527U (en) | Hydraulic power/ ultrasonic coupling cavitation device | |
| CN107716480A (en) | A kind of device and its operation method cleaned online for food industry pipeline | |
| CN104944515B (en) | A kind of highly effective continuous frequency mixing ultrasonic breaking-wall cell processing unit | |
| CN110411272B (en) | Natural ventilation cooling tower with continuous cleaning function for thermal power plant and cleaning method | |
| CN210065437U (en) | Desulfurization waste water is concentrated, evaporation and modulation all-in-one | |
| CN215136903U (en) | Submerged combustion evaporator | |
| CN205892957U (en) | Ammonia nitrogen blows and takes off sewage treatment plant | |
| CN202574582U (en) | Sea creature preventing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131218 Effective date of abandoning: 20150513 |
|
| RGAV | Abandon patent right to avoid regrant |