CN208809693U - A kind of oil flue waste gas pretreatment system - Google Patents
A kind of oil flue waste gas pretreatment system Download PDFInfo
- Publication number
- CN208809693U CN208809693U CN201821061837.7U CN201821061837U CN208809693U CN 208809693 U CN208809693 U CN 208809693U CN 201821061837 U CN201821061837 U CN 201821061837U CN 208809693 U CN208809693 U CN 208809693U
- Authority
- CN
- China
- Prior art keywords
- oil
- wire mesh
- waste gas
- oil removing
- flue waste
- 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.)
- Active
Links
Landscapes
- Filtering Materials (AREA)
Abstract
The utility model provides a kind of oil flue waste gas pretreatment system, and oil flue waste gas pretreatment system includes the sprayer unit and oil removing unit set gradually along oil flue waste gas flow direction to be processed；Oil removing unit includes the first metal filtration oil removing module set gradually along exhaust gas flow direction to be processed and the second metal filtration oil removing module, and the first metal filtration oil removing module includes the first wire mesh；Second metal filtration oil removing module includes the second wire mesh；It further include power unit, for driving the first wire mesh and the rotation of the second wire mesh；And regeneration unit.The oil flue waste gas pretreatment system can efficiently, continuously handle oil flue waste gas, water consumption is lower, wastewater flow rate is small, it is not high to the component requirements of exhaust gas, handle it is large-minded, can on-line regeneration continuous operation, be not necessarily to artificial cleaning, especially suitable for various concentration oil composition exhaust gas, it is also applied for dust-laden exhaust gas.
Description
Technical field
The utility model belongs to technical field of environmental purification, is related to a kind of oil flue waste gas pretreatment system.
Background technique
Kitchen fume contains there are many substance for having serious harm to human body, will increase the probability that people suffer from lung cancer.In city
Many middle-size and small-size restaurants directly will affect beauty and the city in city for outside exhaust removal chamber, oil smoke condensation deposits the grease to be formed
Hold, oil smoke discharges meeting severe exacerbation surrounding enviroment without processing, endangers human health.
Oil flue waste gas is carried out in removal operation technology, processing method type is relatively more, such as: physics intercepts oil removal, bag
Shape filters oil removal, washing oil removing etc..
It is not high to the removal effect of oil that physics intercepts oil removal operation, and needs regularly to carry out manually to clean behaviour
Make.
Pocket type oil removal is obvious to oil removal effect, but uses for a long time, and the oil in oil smoke can be aggregated blocking sack, increases
Gas flow resistance, it may have some potential safety problems.
Washing oil removing such as 204373021 U of CN discloses a kind of air oil smoke purifier, comprising: an oil strain slot,
Inside is equipped with a transverse slat, and the transverse slat is equipped with a hole, and oil strain slot lower part cell wall is equipped with a discharge outlet；One washing head, if
Inside the oil strain slot, the washing head has an inlet pipeline；One blast pipe and a discharge pipe, the blast pipe and institute
The lower part for stating oil strain slot communicates, and the discharge pipe is communicated with the top of the oil strain slot；One exhaust blower, be set to the discharge pipe with
The path that the oil strain slot communicates；One catch basin, bottom wall are located at below the horizontal plane of the oil strain groove bottom wall, the catch basin
It is inside equipped with one to draw water unit, the inlet pipeline of the washing head is connected to the unit that draws water；One staving, bottom wall are located at described
Below the horizontal plane of oil strain groove bottom wall, the staving is connected to the discharge outlet, and its underpart is connected to the catch basin, upper section portion
Side wall is equipped with an oil exit pipe.Its for oil smoke with washing separation, make by air become cleaner air.Simultaneously by one
The waste oil washed down is concentrated on the staving by the setting of discharge outlet and a staving, and using the characteristic on oil swims on water upper layer,
Centralized recovery then is flowed out via an oil exit pipe when waste oil accumulation is to certain altitude, to reach purification air and waste recovery simultaneously
The purpose utilized.Although washing oil removing have the effect of it is certain, it is more demanding to gas-liquid contact in water-washing process, need to consume
A large amount of water, treated, and wastewater flow rate is also big, in the lower situation of oil content, the additional increase use cost of meeting.
Therefore, treating apparatus for exhaust gas of oil smoke need further to improve, to improve its efficiency for handling oil smoke.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of oil flue waste gas pretreatment systems
System, the oil flue waste gas pretreatment system can efficiently, continuously handle oil flue waste gas, water consumption is lower, and wastewater flow rate is small, to useless
The component requirements of gas are not high, handle it is large-minded, can on-line regeneration continuous operation, be not necessarily to artificial cleaning, especially suitable for not
With concentration oil composition exhaust gas, it is also applied for dust-laden exhaust gas.
For this purpose, the utility model uses following technical scheme:
One of the purpose of this utility model is to provide a kind of oil flue waste gas pretreatment system, the oil flue waste gas pretreatment
System includes the sprayer unit and oil removing unit set gradually along oil flue waste gas flow direction to be processed；
Sprayer unit, for spraying into oil flue waste gas to be processed；
Oil removing unit, including the first metal filtration oil removing module and second set gradually along exhaust gas flow direction to be processed
Metal filtration oil removing module, the first metal filtration oil removing module include the first wire mesh；Second metal filtration oil removing module packet
Include the second wire mesh；
The oil flue waste gas pretreatment system further include:
Power unit, for drive the first wire mesh and the second wire mesh rotation, rotation direction not with oil to be processed
Smoke waste gas flow direction is parallel；With,
Regeneration unit, for cleaning oil removing unit.
Oil flue waste gas pretreatment system provided by the utility model first uses sprayer unit to pre-process oil flue waste gas,
Increase the liquid-solid contact ability of exhaust gas, and remove the big partial size oil of the small part in oil flue waste gas, passes through dynamic oil removing later
Unit removes most oils in oil flue waste gas；The dynamic cell of oil is adhered to through the regeneration of regeneration unit, again
For oil removing.The movement of the first wire mesh and the second wire mesh is mutually tied in the pretreatment of sprayer unit and dynamic oil removing unit
It closes, so that the oil removal efficiency of the oil flue waste gas pretreatment unit greatly improves.
The oil flue waste gas pretreatment system can continuously handle oil flue waste gas, and water consumption is lower, and wastewater flow rate is small, to useless
The component requirements of gas are not high, handle it is large-minded, can on-line regeneration continuous operation, be not necessarily to artificial cleaning, especially suitable for not
With concentration oil composition exhaust gas, it is also applied for dust-laden exhaust gas.
The sprayer unit includes atomizing sprayer.Oil flue waste gas is sprayed as long as the sprayer unit can play
The purpose of mist, the device that this purpose may be implemented in others can also use herein.
Preferably, the atomizing sprayer includes atomizer and water inlet pipe, and atomizer and water inlet pipe pass through screw thread
Fastening means connection.
Preferably, the atomizer is line style arrangement.
The average pore size of first wire mesh be 0.1-10mm, as 0.2mm, 0.5mm, 0.8mm, 1.0mm, 1.5mm,
2.5mm, 3.8mm, 4.6mm, 5.8mm, 6.2mm, 7.0mm, 8.4mm or 9.2mm etc..
Preferably, the average pore size of second wire mesh is 0.2-0.6 times of the first wire mesh average pore size, such as
0.25 times, 0.3 times, 0.4 times, 0.5 times, 0.54 times or 0.58 times etc..Second wire mesh and the first wire mesh it is flat
Within the above range, the oil removing ability of the oil flue waste gas pretreatment system is most strong, can reach 90% or more in equal aperture.
Preferably, the wire that first wire mesh and the second wire mesh are independently 0.1-1.0mm by diameter
It is made, the diameter of the wire such as 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm or 0.9mm etc..
Preferably, the wire is in copper wire, aluminum-alloy wire, aluminium wire, stainless steel 304 silk or Stainless steel 316 silk
Any one or at least two combination, typical but non-limiting combination is such as copper wire and aluminium wire, aluminum-alloy wire and copper wire, aluminium
Silk, stainless steel 304 silk and Stainless steel 316 silk.
The power unit includes the first power device and the first rotating member being respectively connected with the first power device and
Two rotating members, the first rotating member drive the rotation of the first wire mesh, and the second rotating member drives the rotation of the second wire mesh.
Preferably, first power device includes motor.First power device can be a power device
It can be multiple power devices, such as 2,4 or 6.Those skilled in the art can select according to the actual needs.
Preferably, first rotating member and the second rotating member independently include gear.First rotating member and second
The purpose of setting of rotating member be in order to which the first wire mesh and the second wire mesh are had certain movement velocity respectively, thus
It rotates, as long as can play the role of this, other components in addition to gear can also use herein.
Preferably, the power unit further includes matching with the first transmission parts of the first rotating member cooperation and with the second rotating member
The second transmission parts closed, the first wire mesh are fixed on the first transmission parts, and the second wire mesh is fixed on the second transmission parts.
Preferably, the first supporting element, the first supporting element are additionally provided between first wire mesh and the first transmission parts
2-10 times with a thickness of the first wire mesh average pore size, such as 2.5 times, 3.0 times, 3.5 times, 3.8 times, 4.6 times, 5.8 times,
6.5 times, 6.9 times, 7.8 times, 8.2 times or 9.5 times etc..The first metal filtration removes the thickness of first supporting element within this range
The deoiling effect of oily module is best, and longest-lived, cost is minimum, and the load of power device is minimum.
Preferably, the second supporting element, the second supporting element are additionally provided between second wire mesh and the second transmission parts
2-10 times with a thickness of the second wire mesh average pore size, such as 2.5 times, 3.0 times, 3.5 times, 3.8 times, 4.6 times, 5.8 times,
6.5 times, 6.9 times, 7.8 times, 8.2 times or 9.5 times etc..The second metal filtration removes the thickness of second supporting element within this range
The deoiling effect of oily module is best, and longest-lived, cost is minimum, and the load of power device is minimum.
Preferably, first supporting element and the second supporting element independently include stainless steel cloth, first supporting element
Effect with the second supporting element be in order to the first wire mesh and the second wire mesh are separately fixed on the first transmission parts and
On second transmission parts, and gas is enabled to flow through, not only includes that stainless steel cloth can also be and can be realized the function
Other objects.
Preferably, first transmission parts and the second transmission parts independently include chain.First transmission parts and second
The purpose of transmission parts setting is that the first transmission parts and the are respectively attached to for the ease of the first wire mesh and the second wire mesh
It is rotated on two transmission parts, not only includes the chain, can also be that can be realized the function enables to gas to flow through
Gas object.
The regeneration unit is used to have adsorbed the oil in the oil removing unit of oil and removes, in order to adsorb oil again
Point.
The regeneration unit includes the first rinse bath, the second rinse bath, cleaning solution supplying device, aerator, frizing dress
It sets and is located at the first oil removing module lower part with the second power device, the first rinse bath, the second rinse bath is located under the second oil removing module
Portion, the first rinse bath and the second rinse bath are equipped with the part-structure of inlet tube, the part-structure of aerator and oil-scraping device,
Inlet tube is connected with cleaning solution supplying device, and aerator and oil-scraping device are connected with the second power device.
The regenerated process of regeneration unit are as follows: the first wire mesh and the second wire mesh turn to fill cleaning respectively
In the first rinse bath and the second rinse bath of liquid, under the aeration effect of cleaning solution and aerator, the first wire mesh and
The oil adsorbed on two wire meshes is transferred in cleaning solution, is regenerated, and the oil in cleaning solution is utilized floating to liquid surface
Oil-scraping device strikes off the oil on surface.
Preferably, second power device includes motor.Second power device can be a device can also be with
It is multiple devices, such as 2 or 5, those skilled in the art can select as needed.
Preferably, the mounting height of the inlet tube is the 1/2-3/4 of oil extraction open height, such as 5/8.The oil discharge outlet is
The outlet for the oil that rinse bath washes down.
Preferably, the aerator is that general pipeline-is in charge of aeration structure.The aerator includes blower and air hose
Aeration opening is arranged on the air pipe line in road.
Preferably, the aeration opening spacing of the aerator is 0.1-1 times of total pipe range, as 0.2 times, 0.3 times, 0.4 times,
0.5 times, 0.6 times, 0.7 times, 0.8 times or 0.9 times etc..
Preferably, the aeration opening of the aerator and horizontal plane tilt angle are 10 ° -45 °, such as 15 °, 18 °, 20 °,
25 °, 30 °, 32 ° or 38 ° etc..
Preferably, the aeration opening of the aerator and the spacing of the first wire mesh or the second wire mesh are 5-
20mm, such as 6mm, 8mm, 10mm, 12mm, 15mm, 18mm or 19mm.
Preferably, the rotation in aeration opening outlet the bubble direction and the first rotating member and the second rotating member of the aerator
It is contrary.
It is arranged between the aeration opening of aerator and horizontal plane tilt angle and the first wire mesh or the second wire mesh
Away from and aeration opening outlet bubble direction and the first rotating member and the second rotating member rotation direction on the contrary, enabling to the first gold medal
The regeneration effect for belonging to silk screen and the second wire mesh is best, can all remove the oil adsorbed in oil removing unit.
Preferably, the oil-scraping device includes scraper plate, third transmission parts and third rotating member, and scraper plate is fixed on third transmission
On part, third rotating member is connected with the second power device, drives the rotation of third transmission parts.The oil-scraping device can continuously by
Oil in cleaning solution strikes off, so that the oil removing unit of the oil flue waste gas pretreatment unit can continuously adsorb oil
Point.
Preferably, the third transmission parts include chain.
The sprayer unit and oil removing unit are located in same housing, so that the knot of the oil flue waste gas pretreatment unit
Structure is compact.
Preferably, bottom is provided with the first liquid islocation plate between the sprayer unit and oil removing unit.Due to sprayer unit meeting
Water mist is generated, and then liquid generation is arranged at bottom, therefore liquid islocation plate is arranged between oil removing unit in it.
Preferably, bottom is provided between the first metal filtration oil removing module and the second metal filtration oil removing module
Two liquid islocation plates.
Preferably, the height of the first liquid islocation plate of height and the second liquid islocation plate of first liquid islocation plate and the second liquid islocation plate is only
It is on the spot 1.2-1.5 times of tank liquor height in the first rinse bath, such as 1.3 times or 1.4 times.First liquid islocation plate and second every
Cleaning effect is best within this range for the height of liquid plate.
Preferably, partition, partition and the first gold medal are provided between the first metal filtration oil removing module top and shell
Belong to filtering oil removing block motion tangent line angular region be 0-45 °, such as 2 °, 5 °, 8 °, 10 °, 15 °, 18 °, 20 °, 25 °, 28 °, 30 °,
35 °, 38 ° or 42 ° etc., the partition can be avoided oil flue waste gas directly from the first metal filtration oil removing module top and shell it
Between flow through, and do not remove oil.
Preferably, partition, partition and the second gold medal are provided between the second metal filtration oil removing module top and shell
Belong to filtering oil removing block motion tangent line angular region be 0-45 °, such as 2 °, 5 °, 8 °, 10 °, 15 °, 18 °, 20 °, 25 °, 28 °, 30 °,
35 °, 38 ° or 42 ° etc., the partition can be avoided oil flue waste gas directly from the first metal filtration oil removing module top and shell it
Between flow through, and do not remove oil.
Preferably, oil discharge outlet is set on the shell, and the oil that the oil scraping plate scrapes can be discharged from oil discharge outlet.
The two of the purpose of this utility model are to provide a kind of pretreated using system as described above progress oil flue waste gas
Method, described method includes following steps:
(1) spraying treatment is carried out to oil flue waste gas to be processed；
(2) oil in the oil flue waste gas for using the first wire mesh adsorption step (1) of movement to obtain；
(3) oil in the oil flue waste gas for using the second wire mesh adsorption step (2) of movement to obtain, is purified cigarette
Gas；
(4) the first wire mesh and the second wire mesh are cleaned, regenerated first wire mesh and the second wire are obtained
Net is respectively used to step (2) and step (3).
Oil flue waste gas preprocess method provided by the utility model first pre-processes oil flue waste gas, increases the liquid of exhaust gas
Gu engagement capacity, and the small part oil in oil flue waste gas is removed, pretreated oil flue waste gas is dynamically inhaled later
It is attached, most oils in oil flue waste gas are removed；The material for having adsorbed oil is regenerated again, is reused for absorption oil
Point.Spraying pretreatment and dynamic oil removing combine, so that the oil removal efficiency of the oil flue waste gas preprocess method greatly improves.
The oil flue waste gas preprocess method can continuously handle oil flue waste gas, and water consumption is lower, and wastewater flow rate is small, to useless
The component requirements of gas are not high, handle it is large-minded, can on-line regeneration continuous operation, be not necessarily to artificial cleaning, especially suitable for not
With concentration oil composition exhaust gas, it is also applied for dust-laden exhaust gas.
Numberical range described in the utility model not only includes enumerated point value, further include do not include it is above-mentioned
Arbitrary point value between numberical range, as space is limited and for concise consideration, described in the utility model no longer exclusive list
The specific point value that range includes.
Compared with prior art, the utility model has the following beneficial effects:
Oil flue waste gas pretreatment system provided by the utility model can efficiently, continuously handle oil flue waste gas, water consumption
Lower, wastewater flow rate is small, and oil removal rate can achieve 90% or more, such as handles 5000m3Oil-containing exhaust gas (the oil concentration 2g/ of/h
m3), oil removal efficiency be 93% or more, water consumption and wastewater flow rate are about 0.5L/h, can on-line regeneration continuous operation, be not necessarily to people
Work cleaning；
Oil smoke pretreatment system provided by the utility model is not high to the component requirements of exhaust gas, handles its large-minded processing
Oil flue waste gas flow can reach 10000m3/ h, oil content can be 0.1-5g/m in oil flue waste gas3；
Oil flue waste gas pretreatment system provided by the utility model is also fitted especially suitable for various concentration oil composition exhaust gas
For dust-laden exhaust gas, oil content range can be 0.1-5g/m3, dust content can be 0-0.5g/m3。
Detailed description of the invention
Fig. 1 is the side view for the oil flue waste gas pretreatment system that embodiment 1 provides.
Fig. 2 is the main view for the oil flue waste gas pretreatment system that embodiment 1 provides, wherein the first wire mesh and the second gold medal
Belong to silk screen not mark.
Fig. 3 is the connection schematic diagram of the first wire mesh and power unit that embodiment 1 provides.
Fig. 4 is the schematic diagram of embodiment 1 partition provided and the first metal filtration oil removing block motion angle of contingence.
Wherein: 1, suction flange；2, atomizer；3, shell；4, partition；5, the first metal filtration oil removing module；6,
Two metal filtration oil removing modules；7, variable diameter；8, outlet(discharge) flange；9, motor hold-down support；10, motor；11, third liquid islocation plate；12,
Aeration opening；13, air pipe line；14, blower；15, inlet tube；16, oleophylic agent filling opening；17, water inlet pipe；18, water pump；19, electric
Machine protective cover；20, driving motor；21, Bearing gear；22, rolling bearing gear；23, liquid inlet electromagnetic valve；24, scraper plate；25, chain
Band；26, liquid outlet electromagnetic valve；27, outlet；28, the first wire mesh；29, stainless steel cloth backing material；30, STAINLESS STEEL CHAINS
Item.
Arrow indicates the direction of gas flowing in figure.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
Embodiment 1
A kind of oil flue waste gas pretreatment system, side view and main view difference are as depicted in figs. 1 and 2, including along wait locate
The sprayer unit and oil removing unit that reason oil flue waste gas flow direction is set gradually；Further include: power unit and regeneration unit；
Sprayer unit is used for into oil flue waste gas to be processed by spraying, including atomizing sprayer, atomizing sprayer include
Atomizer 2 and water inlet pipe 17, water inlet pipe 17 connect water pump 18, and atomizer 2 and water inlet pipe 17 connect；
Oil removing unit, including the first metal filtration oil removing module 5 set gradually along exhaust gas flow direction to be processed and
Two metal filtration oil removing modules 6, the first metal filtration oil removing module 5 include the first wire mesh 28；Second metal filtration oil removing
Module 6 includes the second wire mesh；The average pore size of first wire mesh 28 is 0.1-10mm；The average hole of second wire mesh
Diameter is 0.2-0.6 times of 28 net average pore size of the first wire；First wire mesh 28 and the second wire mesh are independently by straight
Diameter is made of the wire of 0.1-1.0mm；Wire is selected from copper wire, aluminum-alloy wire, aluminium wire, stainless steel 304 silk or Stainless steel 316
Silk in any one or at least two combination；
Power unit includes the first power device and the first rotating member being respectively connected with the first power device and second turn
Moving part further includes the second transmission parts with the first transmission parts of the first rotating member cooperation and with the cooperation of the second rotating member, the first gold medal
Belong to silk screen 28 to be fixed on the first transmission parts, the second wire mesh is fixed on the second transmission parts；First rotating member drives first
Wire mesh 28 rotates, and the second rotating member drives the rotation of the second wire mesh；Between first wire mesh 28 and the first transmission parts
It is additionally provided with the first supporting element, 2-10 times with a thickness of 28 average pore size of the first wire mesh of the first supporting element；Second metal
Be additionally provided with the second supporting element between silk screen and the second transmission parts, the second supporting element with a thickness of the second wire mesh average pore size
2-10 times；First power device is driving motor 20, and motor protecting cover 19 is provided with outside driving motor 20；First rotating member and
Second rotating member includes Bearing gear 21 and rolling bearing gear 22 coupled thereto；First supporting element and the second supporting element are equal
For stainless steel cloth backing material 29；First transmission parts and the second transmission parts are stainless steel chain 30, power unit and first
The connection schematic diagram of wire mesh 28 is as shown in Figure 3: the first wire mesh 28, stainless steel cloth backing material 29 and STAINLESS STEEL CHAINS
The fixation of item 30 is integral；
Regeneration unit include the first rinse bath, the second rinse bath, cleaning solution supplying device, aerator, oil-scraping device and
Second power device, the first rinse bath are located at the first oil removing module lower part, and the second rinse bath is located at the second oil removing module lower part, the
One rinse bath and the second rinse bath are equipped with the part-structure of aerator and the part-structure of oil-scraping device, aerator and scrape
Oily device is connected with the second power device；Second power device includes motor 10, and motor 10 is fixed by motor hold-down support 9；
Aerator includes blower 14 and air pipe line 13, is in charge of aeration structure for general pipeline-, aeration opening 12 is arranged on air pipe line 13,
12 spacing of aeration opening is 0.1-1 times of total pipe range；The aeration opening 12 and horizontal plane tilt angle of aerator are 10 ° -45 °；It exposes
The aeration opening 12 of device of air and the spacing of the first wire mesh or the second wire mesh are 5-20mm, and aeration opening 12 exports bubble side
To opposite with the rotation direction of the first rotating member and the second rotating member；Cleaning solution supplying device includes oleophylic agent feeding hopper, supplies
Liquid inlet electromagnetic valve 23 is arranged on water inlet pipe 15 for water installations and the water inlet pipe 15 being connected with water supply device, and water supply device includes water pump
18, water inlet pipe 15 is respectively arranged in the first rinse bath and the second rinse bath, and cleaning solution supplying device is connected with inlet tube 15, into
The mounting height of liquid pipe 15 is the 1/2-3/4 of oil extraction open height；Oil-scraping device includes scraper plate 24, third transmission parts and third rotation
Part, scraper plate 24 are fixed on third transmission parts, and third rotating member is connected with the second power device, drive the rotation of third transmission parts,
Third transmission parts are chain belt 25；
The sprayer unit and oil removing unit are located in same housing 3, and air inlet, the other side is arranged in 3 side of shell
Gas outlet is set, and suction flange 1 is arranged in air inlet, and outlet(discharge) flange 8 is arranged in gas outlet, between the sprayer unit and oil removing unit
Bottom is provided with the first liquid islocation plate；Bottom is arranged between first metal filtration oil removing module 5 and the second metal filtration oil removing module 6
There is the second liquid islocation plate；Third liquid islocation plate 11, the first liquid islocation plate, the is arranged in bottom between second metal filtration oil removing module and shell
The height of two liquid islocation plates and third liquid islocation plate 11 independently is 1.2-1.5 times of tank liquor height in the first rinse bath；First metal
Partition 4 is provided between 5 top of filtering oil removing module and shell 3, partition 4 and the first metal filtration oil removing module 5 move tangent line
Angle α range is 0-45 °, as shown in Figure 4；Partition 4, partition are provided between second metal filtration oil removing module, 6 top and shell 3
4 and second metal filtration oil removing module 6 move tangent line angular region be 0-45 °；Oil discharge outlet, the oil extraction are set on the shell 3
Liquid outlet electromagnetic valve 26 is arranged on outlet 27 in mouthful connection outlet pipe 27, and scraper plate 24 is contacted with liquid level, strikes off cleaning solution surface oil
Point, and oil is scraped to outlet 27；The driving motor 20 is arranged outside shell 3.
The pretreated method of oil flue waste gas is carried out using above system, is included the following steps:
(1) oil flue waste gas to be processed is sprayed；
(2) oil in the oil flue waste gas for using the first wire mesh adsorption step (1) of movement to obtain；
(3) oil in the oil flue waste gas for using the second wire mesh adsorption step (2) of movement to obtain, is purified cigarette
Gas；
(4) the first wire mesh and the second wire mesh are cleaned, regenerated first wire mesh and the second wire are obtained
Net is respectively used to step (2) and step (3).
In above-described embodiment 1, the sprayer unit and oil removing unit of the oil flue waste gas pretreatment system be can also be provided at
In different shells, the first oil removing module and the second oil removing module in oil removing unit be may also be arranged in different shells, this
When no setting is required liquid islocation plate；The water inlet pipe 17 of sprayer unit can connect identical water pump with the inlet tube 15 of regeneration unit with simplification
Piping connection, can also connect different water supply devices, and oleophylic agent filling opening 16 can be also directly connected to the first rinse bath and second
In rinse bath, but the first rinse bath and the second rinse bath are entered back into after preferably first mixing with water.
Embodiment 2
A kind of oil flue waste gas pretreatment system, including the sprayer unit set gradually along oil flue waste gas flow direction to be processed
With oil removing unit；Further include: power unit and regeneration unit；
Sprayer unit is used for into oil flue waste gas to be processed by spraying, including atomizing sprayer, atomizing sprayer include
Atomizer 2 and water inlet pipe 17, water inlet pipe 17 connect water pump 18, and it is 0.5mm, atomizer 2 that atomizer 2, which is discharged average pore size,
It is connected with water inlet pipe 17 by screw threads for fastening mode, atomizer 2 is line style arrangement；
Oil removing unit, including the first metal filtration oil removing module 5 set gradually along exhaust gas flow direction to be processed and
Two metal filtration oil removing modules 6, the first metal filtration oil removing module 5 include the first wire mesh 28；Second metal filtration oil removing
Module 6 includes the second wire mesh；The average pore size of first wire mesh 28 is 0.2mm；The average pore size of second wire mesh
It is 0.6 times of 28 net average pore size of the first wire；First wire mesh 28 and the second wire mesh are independently by diameter
The wire of 0.1mm is made；Wire appointing in copper wire, aluminum-alloy wire, aluminium wire, stainless steel 304 silk or Stainless steel 316 silk
It anticipates a kind of or at least two combinations；
Power unit includes the first power device and the first rotating member being respectively connected with the first power device and second turn
Moving part further includes the second transmission parts with the first transmission parts of the first rotating member cooperation and with the cooperation of the second rotating member, the first gold medal
Belong to silk screen 28 to be fixed on the first transmission parts, the second wire mesh is fixed on the second transmission parts；First rotating member drives first
Wire mesh 28 rotates, and the second rotating member drives the rotation of the second wire mesh；Between first wire mesh 28 and the first transmission parts
It is additionally provided with the first supporting element；The second supporting element, the second supporting element are additionally provided between second wire mesh and the second transmission parts
2 times with a thickness of the second wire mesh average pore size；First power device is driving motor 20, is provided with outside driving motor 20
Motor protecting cover 19；First rotating member and the second rotating member include Bearing gear 21 and rolling bearing gear coupled thereto
22；First supporting element and the second supporting element are stainless steel cloth backing material 29；First transmission parts and the second transmission parts are
Stainless steel chain 30 (material is 304 materials), the connection schematic diagram of power unit and the first wire mesh 28 is as shown in Figure 3: the
One wire mesh 28 is fixed on the stainless steel cloth backing material 29 that average pore size is 0.5mm, and the two is fixed on STAINLESS STEEL CHAINS
On item 30, fixation uses diameter for the stainless steel 304 silk of 0.5mm；
Regeneration unit include the first rinse bath, the second rinse bath, cleaning solution supplying device, aerator, oil-scraping device and
Second power device, the first rinse bath are located at the first oil removing module lower part, and the second rinse bath is located at the second oil removing module lower part, the
One rinse bath and the second rinse bath are equipped with the part-structure of aerator and the part-structure of oil-scraping device, aerator and scrape
Oily device is connected with the second power device；Second power device includes motor 10, and motor 10 is fixed by motor hold-down support 9；
Aerator includes blower 14 and air pipe line 13, is in charge of aeration structure for general pipeline-, aeration opening 12 is arranged on air pipe line 13,
12 spacing of aeration opening is 0.1 times of total pipe range；The aeration opening 12 and horizontal plane tilt angle of aerator are 45 °；Aerator
Aeration opening 12 and the spacing of the first wire mesh or the second wire mesh be 5mm, aeration opening 12 exports bubble direction and first
The rotation direction of rotating member and the second rotating member is opposite；Cleaning solution supplying device include oleophylic agent feeding hopper, water supply device and
Liquid inlet electromagnetic valve 23 is arranged on water inlet pipe 15 for the water inlet pipe 15 being connected with water supply device, and water supply device includes water pump 18, water inlet pipe
15 are respectively arranged in the first rinse bath and the second rinse bath, and cleaning solution supplying device is connected with inlet tube 15, inlet tube 15
Mounting height is 2/3 of cleaning solution height in the first rinse bath or the second rinse bath, and close finish composition is polyacrylamide, with oneself
The volumetric mixture ratio of water is 1:100；Oil-scraping device includes scraper plate 24, third transmission parts and third rotating member, and scraper plate 24 is fixed
On third transmission parts, third rotating member is connected with the second power device, drives the rotation of third transmission parts, and third transmission parts are chain
Band 25；
The sprayer unit and oil removing unit are located in same housing 3, and air inlet, the other side is arranged in 3 side of shell
Gas outlet is set, and suction flange 1 is arranged in air inlet, and outlet(discharge) flange 8 is arranged in gas outlet, between the sprayer unit and oil removing unit
Bottom is provided with the first liquid islocation plate；Bottom is arranged between first metal filtration oil removing module 5 and the second metal filtration oil removing module 6
There is the second liquid islocation plate；Third liquid islocation plate 11, the first liquid islocation plate, the is arranged in bottom between second metal filtration oil removing module and shell
The height of two liquid islocation plates and third liquid islocation plate 11 is 1.2 times of tank liquor height in rinse bath；First metal filtration oil removing module 5 top
The stainless steel plate with a thickness of 3mm is provided between portion and shell 3 --- partition 4, in mounting height size with a minor metal mistake
It filters out there are the gap of 2mm between oily module 5, partition 4 is with the first metal filtration oil removing module 5 movement angle of contingence α range
45 °, as shown in Figure 4；Partition 4, partition 4 and the second metal are provided between second metal filtration oil removing module, 6 top and shell 3
Filtering oil removing module 6 and moving tangent line angular region is 45 °；Oil discharge outlet, the oil discharge outlet connection outlet pipe are also set up on the shell 3
27,27 height of outlet is set as 1.1 times of liquid level, and liquid outlet electromagnetic valve 26, liquid outlet electromagnetic valve 26 is arranged on outlet 27
Open frequency be 3 times/per hour；The driving motor 20 is arranged outside shell 3.
Embodiment 3
A kind of oil flue waste gas pretreatment system, including the sprayer unit set gradually along oil flue waste gas flow direction to be processed
With oil removing unit；Further include: power unit and regeneration unit；
Sprayer unit is used for into oil flue waste gas to be processed by spraying, including atomizing sprayer, atomizing sprayer include
Atomizer 2 and water inlet pipe 17, water inlet pipe 17 connect water pump 18, and it is 0.2mm, atomizer 2 that atomizer 2, which is discharged average pore size,
It is connected by way of 90 ° of PVC elbow undertakings with water inlet pipe 17, the arrangement of atomizer 2 is square arrangement, every side arrangement atomization spray
First 2 numbers are 6；
Oil removing unit, including the first metal filtration oil removing module 5 set gradually along exhaust gas flow direction to be processed and
Two metal filtration oil removing modules 6, the first metal filtration oil removing module 5 include the first wire mesh 28；Second metal filtration oil removing
Module 6 includes the second wire mesh；The average pore size of first wire mesh 28 is 0.5mm；The average pore size of second wire mesh
It is 0.2 times of 28 net average pore size of the first wire；First wire mesh 28 and the second wire mesh are independently by diameter
The wire of 0.5mm is made；Wire appointing in copper wire, aluminum-alloy wire, aluminium wire, stainless steel 304 silk or Stainless steel 316 silk
It anticipates a kind of or at least two combinations；
Power unit includes the first power device and the first rotating member being respectively connected with the first power device and second turn
Moving part further includes the second transmission parts with the first transmission parts of the first rotating member cooperation and with the cooperation of the second rotating member, the first gold medal
Belong to silk screen 28 to be fixed on the first transmission parts, the second wire mesh is fixed on the second transmission parts；First rotating member drives first
Wire mesh 28 rotates, and the second rotating member drives the rotation of the second wire mesh；Between first wire mesh 28 and the first transmission parts
It is additionally provided with the first supporting element；The second supporting element is additionally provided between second wire mesh and the second transmission parts；First power dress
It is set to driving motor 20, motor protecting cover 19 is provided with outside driving motor 20；First rotating member and the second rotating member include axis
Hold gear 21 and rolling bearing gear 22 coupled thereto；First supporting element and the second supporting element are stainless steel cloth fid
Material 29；First transmission parts and the second transmission parts are stainless steel chain 30 (material is 316L material), power unit and the first gold medal
The connection schematic diagram for belonging to silk screen 28 is as shown in Figure 3: the first wire mesh 28 is fixed on the stainless steel cloth that average pore size is 2.5mm
On backing material 29, the two is fixed on stainless steel chain 30, and fixation uses diameter for the stainless steel 304 silk of 0.5mm；
Regeneration unit include the first rinse bath, the second rinse bath, cleaning solution supplying device, aerator, oil-scraping device and
Second power device, the first rinse bath are located at the first oil removing module lower part, and the second rinse bath is located at the second oil removing module lower part, the
One rinse bath and the second rinse bath are equipped with the part-structure of aerator and the part-structure of oil-scraping device, aerator and scrape
Oily device is connected with the second power device；Second power device includes motor 10, and motor 10 is fixed by motor hold-down support 9；
Aerator includes blower 14 and air pipe line 13, is in charge of aeration structure for general pipeline-, aeration opening 12 is arranged on air pipe line 13,
12 spacing of aeration opening is 0.1 times of total pipe range；The aeration opening 12 and horizontal plane tilt angle of aerator are 45 °；Aerator
Aeration opening 12 and the spacing of the first wire mesh or the second wire mesh be 5mm, aeration opening 12 exports bubble direction and first
The rotation direction of rotating member and the second rotating member is opposite；Cleaning solution supplying device include oleophylic agent feeding hopper, water supply device and
Liquid inlet electromagnetic valve 23 is arranged on water inlet pipe 15 for the water inlet pipe 15 being connected with water supply device, and water supply device includes water pump 18, water inlet pipe
15 are respectively arranged in the first rinse bath and the second rinse bath, and cleaning solution supplying device is connected with inlet tube 15, inlet tube 15
Mounting height is 3/4 of cleaning solution height in the first rinse bath or the second rinse bath, and close finish composition is polyacrylamide and ten
The mixed liquor of eight alkyl amine acetates, between match 1:2, mixed liquor and tap water mixing ratio are 1:50, aeration opening tilt angle
It is 10 °, with a 28 vertical interval gap 5mm of plate net metal pompon material；Oil-scraping device includes scraper plate 24, third transmission
Part and third rotating member, scraper plate 24 are fixed on third transmission parts, and third rotating member is connected with the second power device, drive third
Transmission parts rotation, third transmission parts are chain belt 25, and scraper plate 24 is securely connected with chain belt 25 by the stainless steel wire stranded mode of 1mm
It connects, wherein 24 structure of scraper plate is T-shape structure.Scraper plate 24 and 25 material of chain belt are Stainless steel 316 L material, scraper plate 24 and chain
Band 25 is fixed on 10 bearing of driving motor, passes through gear coupling；
The sprayer unit and oil removing unit are located in same housing 3, and air inlet, the other side is arranged in 3 side of shell
Gas outlet is set, and suction flange 1 is arranged in air inlet, and outlet(discharge) flange 8 is arranged in gas outlet, between the sprayer unit and oil removing unit
Bottom is provided with the first liquid islocation plate；Bottom is arranged between first metal filtration oil removing module 5 and the second metal filtration oil removing module 6
There is the second liquid islocation plate；Third liquid islocation plate 11, the first liquid islocation plate, the is arranged in bottom between second metal filtration oil removing module and shell
The height of two liquid islocation plates and third liquid islocation plate 11 is 1.2 times of tank liquor height in rinse bath；First metal filtration oil removing module 5 top
The stainless steel plate with a thickness of 3mm is provided between portion and shell 3 --- partition 4, in mounting height size with a minor metal mistake
It filtering out between oily module 5 there are the gap of 2mm, partition 4 and the first metal filtration oil removing module 5 movement angle of contingence α range are 0 °,
As shown in figure 4, partition 4 and enclosure interior are fixed by screw nut, partition shape is T-shape structure, partition installation center position
It sets and moves 10mm away from a 5 vertical centred position left avertence of metal filtration oil removing module, removed on height dimension with a metal filtration
There are the gaps of 10mm between oily module 5；It is also equipped with partition 4 between second metal filtration oil removing module, 6 top and shell 3,
It is identical as the first filtering partition of oil removing module that form is arranged in it；Oil discharge outlet, the oil discharge outlet connection are also set up on the shell 3
Outlet 27,27 height of outlet are set as 1.3 times of liquid level, liquid outlet electromagnetic valve 26 are arranged on outlet 27, out liquid electricity
26 open frequency of magnet valve be 6 times/per hour；The driving motor 20 is arranged outside shell 3.
Embodiment 4
The pretreatment that oil flue waste gas is carried out using device as described in example 2, is included the following steps:
(1) to oil flue waste gas to be processed, (temperature is 25 DEG C, exhausted air quantity 5000m3/ h, dust content 100mg/m3, oil-containing
Concentration is 500mg/m3) spraying treatment is carried out, flowing to for spray direction and oil flue waste gas is identical；
(2) using the oil in the obtained oil flue waste gas of the first wire mesh adsorption step (1) of movement, the direction of motion with
The flow direction of oil flue waste gas to be processed is vertical；
(3) oil in the oil flue waste gas for using the second wire mesh adsorption step (2) of movement to obtain, is purified cigarette
Gas, the direction of motion are vertical with the flow direction of oil flue waste gas to be processed；
(4) under aeration state, the first wire mesh and the second wire mesh are cleaned using cleaning solution, obtain regenerated the
One wire mesh and the second wire mesh are respectively used to step (2) and step (3).
Treated, and fuel gas and dust concentration is reduced to 10mg/m3, oil amount is reduced to 10mg/m3, dust removal rate 90%,
95% or more oil removal rate, water consumption and wastewater flow rate are about 0.5L/h.
Embodiment 5
The pretreatment that oil flue waste gas is carried out using device as described in example 2, is included the following steps:
(1) to oil flue waste gas to be processed, (temperature is 30 DEG C, exhausted air quantity 10000m3/ h, dust content 0.1g/m3, oil-containing
Concentration is 1.0g/m3) spraying treatment is carried out, flowing to for spray direction and oil flue waste gas is identical；
(2) using the oil in the obtained oil flue waste gas of the first wire mesh adsorption step (1) of movement, the direction of motion with
The flow direction of oil flue waste gas to be processed is vertical；
(3) oil in the oil flue waste gas for using the second wire mesh adsorption step (2) of movement to obtain, is purified cigarette
Gas, the direction of motion are vertical with the flow direction of oil flue waste gas to be processed；
(4) under aeration state, the first wire mesh and the second wire mesh are cleaned using cleaning solution, obtain regenerated the
One wire mesh and the second wire mesh are respectively used to step (2) and step (3), wherein the quality hundred of water in the cleaning agent
Dividing content is 50%.
Treated, and fuel gas and dust concentration is reduced to 10mg/m3, oil amount is reduced to 5mg/m3, dust removal rate 90%, oil
Dividing removal rate is 90% or more.
The Applicant declares that the foregoing is merely specific embodiment of the present utility model, but the protection model of the utility model
It encloses and is not limited thereto, it should be clear to those skilled in the art, any to belong to those skilled in the art and exist
In the technical scope that the utility model discloses, any changes or substitutions that can be easily thought of, all falls within the protection scope of the utility model
Within the open scope.
Claims (9)
1. a kind of oil flue waste gas pretreatment system, which is characterized in that the oil flue waste gas pretreatment system includes along oil to be processed
The sprayer unit and oil removing unit that smoke waste gas flow direction is set gradually；
Sprayer unit, for spraying into oil flue waste gas to be processed；
The sprayer unit includes atomizing sprayer；The atomizing sprayer includes atomizer and water inlet pipe, atomization spray
Head is connected with water inlet pipe by screw threads for fastening mode, and the atomizer is line style arrangement；
Oil removing unit, including the first metal filtration oil removing module set gradually along exhaust gas flow direction to be processed and the second metal
Oil removing module is filtered, the first metal filtration oil removing module includes the first wire mesh；Second metal filtration oil removing module includes the
Two wire meshes；
The oil flue waste gas pretreatment system further include:
Power unit, for driving the first wire mesh and the rotation of the second wire mesh, rotation direction is not useless with oil smoke to be processed
Flow of air direction is parallel；With,
Regeneration unit, for cleaning oil removing unit.
2. oil flue waste gas pretreatment system according to claim 1, which is characterized in that first wire mesh is averaged
Aperture is 0.1-10mm；The average pore size of second wire mesh is 0.2-0.6 times of the first wire mesh average pore size.
3. oil flue waste gas pretreatment system according to claim 1 or 2, which is characterized in that the power unit includes the
One power device and the first rotating member and the second rotating member being respectively connected with the first power device, the first rotating member drive first
Wire mesh rotation, the second rotating member drive the rotation of the second wire mesh；The power unit further includes matching with the first rotating member
The first transmission parts closed and the second transmission parts with the cooperation of the second rotating member, the first wire mesh are fixed on the first transmission parts,
Second wire mesh is fixed on the second transmission parts；First transmission parts and the second transmission parts independently include chain.
4. oil flue waste gas pretreatment system according to claim 3, which is characterized in that first wire mesh and first
The first supporting element, 2-10 times with a thickness of the first wire mesh average pore size of the first supporting element are additionally provided between transmission parts；
Be additionally provided with the second supporting element between second wire mesh and the second transmission parts, the second supporting element with a thickness of the second metal
2-10 times of silk screen average pore size；First supporting element and the second supporting element independently include stainless steel cloth.
5. oil flue waste gas pretreatment system according to claim 1, which is characterized in that the regeneration unit includes first clear
Washing trough, the second rinse bath, cleaning solution supplying device, aerator, oil-scraping device and the second power device, the first rinse bath are located at
First oil removing module lower part, the second rinse bath are located at the second oil removing module lower part, and the first rinse bath and the second rinse bath are equipped with
The part-structure of inlet tube, the part-structure of aerator and oil-scraping device, inlet tube are connected with cleaning solution supplying device, feed liquor
The mounting height of pipe is the 1/2-3/4 of oil extraction open height；Aerator and oil-scraping device are connected with the second power device.
6. oil flue waste gas pretreatment system according to claim 5, which is characterized in that the aerator is general pipeline-points
Pipe aeration structure；The aeration opening spacing of the aerator is 0.1-1 times of total pipe range；The aeration opening and water of the aerator
Flat inclination is 10 ° -45 °；The spacing of the aeration opening of the aerator and the first wire mesh or the second wire mesh
For 5-20mm；The rotation direction phase in aeration opening outlet the bubble direction and the first rotating member and the second rotating member of the aerator
Instead.
7. oil flue waste gas pretreatment system according to claim 5, which is characterized in that the oil-scraping device include scraper plate,
Third transmission parts and third rotating member, scraper plate are fixed on third transmission parts, and third rotating member is connected with the second power device, band
Dynamic third transmission parts rotation；The third transmission parts include chain.
8. oil flue waste gas pretreatment system according to claim 5, which is characterized in that the sprayer unit and oil removing unit
In same housing；Bottom is provided with the first liquid islocation plate between the sprayer unit and oil removing unit；The first metal mistake
It filters out bottom between oily module and the second metal filtration oil removing module and is provided with the second liquid islocation plate；First liquid islocation plate and second is every liquid
The height of plate independently is 1.2-1.5 times of tank liquor height in the first rinse bath.
9. oil flue waste gas pretreatment system according to claim 8, which is characterized in that the first metal filtration oil removing mould
Partition is provided at the top of block between shell, partition and the first metal filtration oil removing block motion tangent line angular region are 0-45 °；Institute
It states and is provided with partition between the second metal filtration oil removing module top and shell, partition and the second metal filtration oil removing block motion
Tangent line angular region is 0-45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821061837.7U CN208809693U (en) | 2018-07-05 | 2018-07-05 | A kind of oil flue waste gas pretreatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821061837.7U CN208809693U (en) | 2018-07-05 | 2018-07-05 | A kind of oil flue waste gas pretreatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208809693U true CN208809693U (en) | 2019-05-03 |
Family
ID=66270569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821061837.7U Active CN208809693U (en) | 2018-07-05 | 2018-07-05 | A kind of oil flue waste gas pretreatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208809693U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108579309A (en) * | 2018-07-05 | 2018-09-28 | 江苏中科睿赛污染控制工程有限公司 | A kind of oil flue waste gas pretreatment system and method |
-
2018
- 2018-07-05 CN CN201821061837.7U patent/CN208809693U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108579309A (en) * | 2018-07-05 | 2018-09-28 | 江苏中科睿赛污染控制工程有限公司 | A kind of oil flue waste gas pretreatment system and method |
| CN108579309B (en) * | 2018-07-05 | 2024-04-16 | 江苏中科睿赛污染控制工程有限公司 | Oil smoke waste gas pretreatment system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2006226605B2 (en) | Device for removing wet paint overspray | |
| CN102421535B (en) | Paint booth equipped with purification device | |
| KR101601246B1 (en) | A air cleaner | |
| JP5795977B2 (en) | Polishing equipment | |
| WO2012111949A2 (en) | Centrifugal wet type cleaner | |
| CN104764102B (en) | A kind of indoor air-purification device | |
| CN207913445U (en) | A kind of purification of chemical waste gas processing unit | |
| CN208323100U (en) | A kind of oil fog purification plant in roller process of lapping | |
| JP6749146B2 (en) | Wet gaseous substance treatment equipment | |
| JP2014121682A (en) | Gas liquid separator and polisher | |
| CN208809693U (en) | A kind of oil flue waste gas pretreatment system | |
| CN102698557A (en) | Electrostatic spraying and dust-removing system | |
| CN208809692U (en) | A kind of oil flue waste gas processing system | |
| CN208852594U (en) | A kind of spray deduster | |
| CN108579309A (en) | A kind of oil flue waste gas pretreatment system and method | |
| CN211987803U (en) | Waste rubber recycling and dust removing device | |
| KR100287970B1 (en) | Composite cleaning and water treatment apparatus for purifying contaminated gas | |
| CN110577296B (en) | Water purifier by membrane filtration method | |
| RU34397U1 (en) | Inertial vortex dust collector for wet cleaning of dusty gas | |
| CN209952474U (en) | Liquid washing air purifier | |
| CN113332834A (en) | Water circulation air purification device without filter element | |
| CN209348398U (en) | A kind of absorption denitrogenation flue gas purification device with anti-dust effect | |
| CN207462876U (en) | Water curtain machine and sewage disposal device | |
| RU153348U1 (en) | WASTE WATER TREATMENT CLEANERS | |
| CN213314151U (en) | PM2.5 air purifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |