CN106139786B - A kind of deep cooling vacuum filter - Google Patents
A kind of deep cooling vacuum filter Download PDFInfo
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- CN106139786B CN106139786B CN201510111533.1A CN201510111533A CN106139786B CN 106139786 B CN106139786 B CN 106139786B CN 201510111533 A CN201510111533 A CN 201510111533A CN 106139786 B CN106139786 B CN 106139786B
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Abstract
The present invention is to be used to protect the filter device of vaccum-pumping equipment in a kind of equipment of operated under vacuum; it is a kind of deep cooling vacuum filter; it is in traditional strainer filtering front end; utilize annular air-flow path between the can body of metal can and trumpet type circular arc isolated tube; make to vacuumize air-flow when passing through annular air-flow path; generation is rotated down operating on centrifugal force and increases gas channel space; attenuating air-flow pressure upstream is isolated granule dust and is fallen into the useless machinery oil of tank bottom disk; reentrainment of dust is prevented, metal filter screen is made to extend usage time.The airflow diversion blade of tower-like fan-shaped superposition; upward 90 degree of every blade lower edge is turned up; form diversion trench; the liquid fallen above airflow diversion blade can be imported in fluid storage slot; simultaneously but also with cold-trap effect, then in traditional strainer filtering rear end deepen cold refrigerator pipes, moisture, the toxic, corrosive substance in vacuum pneumatic are solidified; centralized processing achievees the purpose that protect vaccum-pumping equipment.
Description
Technical field
The invention belongs to vacuum filter fields, are related in a kind of equipment to work under vacuum protecting mechanical vacuumizing
The filter plant of equipment.
Background technology
With the development of the aerospace cause in China, country is increasingly ripe to the use of new material to be increased, vacuum work
Make equipment gradually to popularize, vacuum metallurgy smelting equipment becomes development trend.Vacuum metallurgy smelting equipment is chiefly used in infusibility and rare
Metal material.And the mode of production of infusibility and rare metal raw material uses chemical leaching test substantially, the sponge produced such as chloridising
Titanium occupies most of share.
Titanium occupies 90% share in vacuum metallurgy melting, due to raw material titanium sponge remain in process of production it is certain
Chlorine is extracted out by vacuum equipment after being evaporated in melting and reacted with the water in air, and generation hypochlorous acid and hydrogen chloride Cl2+H2O →
HCL+HCLO has stronger corrosivity.In addition the moisture in the dust and air that are sucked when vacuumizing moistens with vacuum equipment
Lubricating oil mixes, and heavy corrosion is caused to wear mechanical vacuumizing apparatus system in production.Mechanical vacuumizing apparatus system is just
Often the use of lower General Life is 3 to 5 years, and the damage that is just corroded in basic three months can not use in titanium sponge smelting, true
It is always the problem that can not be overcome in empty metallurgical smelting industry.
Conventionally known vacuum strainer filtering, splashing that can only be in filtering vacuum metallurgical smelting furnace and vacuum production equipment
Grain object and dust, can not filter moisture, toxic, corrosive substance.
In being produced the present invention be directed to current metallurgical industry, vacuum metallurgy melting and vacuum production equipment filter when vacuumizing
Moisture and chlorine in the dust and vacuum pneumatic of sucking play a protective role to mechanical vacuumizing apparatus what design was completed.
Invention content
A kind of deep cooling vacuum filter, it is characterised in that：In a vacuum metal tank body, a trumpet type circle is installed
Arc isolated tube makes to form annular air-flow path, vacuum pneumatic between the can body of vacuum metal tank body and trumpet type circular arc isolated tube
The centrifugal gravity for circularizing rotational flow downwards separates the granule dust in vacuum pneumatic, falls into vacuum metal tank body
Tank bottom disk gives up in machinery oil, and granular dust prevents reentrainment of dust after immersing useless machinery oil；
Metal filter screen is arranged in the middle part of can body, and the diameter of metal filter screen is less than the internal diameter of can body, can body and metal mistake
There are the gap of annular between strainer, the position where gap is provided with fluid storage slot, and gas is provided with above metal filter screen
Splitterr vanes are flowed, cryogenic refrigeration pipe is mounted in cover, and cover top is provided with defrosting gas outlet, from metal filter screen to cover
Space where top forms deep cooling filtering refrigeration area；
The vacuum pneumatic of metal filter screen is using metal screen secondary filter, and air-flow after secondary filter is using having
The airflow diversion blade of the tower-like fan-shaped superposition of cold-trap effect, the oil molecule to gasify in vacuum pneumatic attachment is isolated；Gas
Stream splitterr vanes make vacuum pneumatic filter refrigeration area uniformly through deep cooling, and the liquid parts in air-flow will condense upon deep cooling filtering system
On the cryogenic refrigeration pipe of cold-zone；
The condensation product on cryogenic refrigeration pipe is condensed upon, is fallen on after being passed through compressed air or hot wind ablation by the air inlet that defrosts
Above airflow diversion blade, liquid fluid storage slot is imported into, then receive through liquid through the liquid guide flow slot on airflow diversion blade
The liquid emission valve discharge centralized processing of tank bottom, the compressed air being passed through or hot wind are discharged by gas outlet of defrosting.
Trumpet type circular arc isolated tube in vacuum metal tank body is installed, makes to be divided into inside and outside two layers in vacuum metal tank body
Form annular air-flow path between the can body of gas channel, outer layer and vacuum metal tank body, the air inlet at can body is arranged on tank
On the side wall of body, opposite angle is formed with tubaeform circular arc isolated tube, vacuum pneumatic is made to be isolated along can body with tubaeform circular arc
Around downlink between pipe；Horn mouth gradually widened uplink vacuum pneumatic channel is gone up among trumpet type circular arc isolated tube, makes vacuum
Air-flow can gradually be evenly distributed in metal screen bottom.
The airflow diversion blade of tower-like fan-shaped superposition is provided simultaneously with cold-trap effect, the oil molecule of attachment isolation gasification；It is tower-like
The airflow diversion blade of sector superposition is divided into inner ring blade and outer ring blade, and the quantity of inner ring blade only has outer ring blade quantity
Half is the space in order to ensure vacuum pneumatic channel between inner ring blade；Into the blade lower edge upward 90 of sector superposition
Degree is turned up to form diversion trench, and aperture on steel plate is isolated between inner ring blade and outer ring blade by inner ring blade diversion trench and outer ring
Blade diversion trench penetrates through.
Along one week setting fluid storage slot of can body inner wall, metal screen, top installation air-flow are installed among fluid storage slot
Splitterr vanes, by the liquid guide flow above airflow diversion blade to fluid storage slot, the drain valve row through fluid storage trench bottom
Go out to concentrate environmental protection treatment.
Cover center of top is provided with the bleeding point of the circular entire cover of perforation, is evacuated in airflow diversion blade and cover
Mouthful between deep cooling filtering refrigeration area be uniformly distributed cryogenic refrigeration pipe, by deep cooling trap pump refrigeration, by vacuum pneumatic moisture,
Toxic, corrosive substance solidifies.
Deep cooling vacuum filter main body is a Cylinder vacuum metal can, and vacuum metal tank body is divided into tank bottom disk,
Can body, cover three parts.
A kind of deep cooling vacuum filter is that tubaeform circular arc isolated tube is installed in a vacuum metal tank body, in loudspeaker
Below shape circular arc isolated tube, vacuum inlet is opened at the can body of vacuum metal tank body, air inlet side deviates at can body, makes vacuum gas
Stream is along gas channel between can body and tubaeform circular arc isolated tube around downlink.It is packed into the tank bottom disk of vacuum metal tank body
The useless machinery oil of 5cm thickness, for adsorbing dust.Useless machinery oil pasta is seen by the inspection glass for oil level that vacuum metal pot bottom is installed
Examine pasta situation.Fuel outlet valve replaces useless machinery oil and adjustment oil level for clearing up.With the vacuum pneumatic around downlink from tubaeform
The base opening of circular arc isolated tube, through uplink among tubaeform circular arc isolated tube.
Along the setting fluid storage slot of can body inner wall one week above tubaeform circular arc isolated tube, in the fluid storage slot of can body
Between metal screen is installed.
Airflow diversion blade is installed above fluid storage slot, the tower-like fan-shaped airflow diversion blade being superimposed is provided simultaneously with cold
The tectonism of trap, upward 90 degree of the every blade lower edge of tower-like fan-shaped superposition are turned up to form diversion trench, can be by air-flow point
The liquid that ablation is fallen above stream blade is imported in fluid storage slot, and the airflow diversion blade of tower-like fan-shaped superposition is divided into inner ring leaf
Piece and outer ring blade, the quantity of inner ring blade only has the half of outer ring blade quantity, is the sky in order to ensure inner ring gas channel
Between.The aperture that inner ring blade is isolated with outer ring blade on steel plate penetrates through inner ring blade diversion trench and outer ring blade diversion trench.Liquid
The condensed matter liquid of the drain valve discharge ablation of body receiving trench bottom.
Can body side installation ablation defrosting air inlet pipe and valve, the installation ablation of cover upper end below airflow diversion blade are removed
White exhaust pipe and valve are for cryogenic refrigeration pipe ablation defrosting, drying.
It is cold that deep cooling filtering refrigeration area between airflow diversion blade and cover bleeding point in can body is evenly arranged two layer depths
Refrigerator pipes are that cryogenic refrigeration pipe carries out providing cryogenic refrigeration source, currently used deep cooling trapping pump by external deep cooling trapping pump
Lowest refrigerating temperature can reach subzero 220 degrees Celsius, and chlorine is significantly condensed into crystallization when less than subzero 120 degrees Celsius
Body.Other elemental compositions can also require adjustment cryogenic refrigeration temperature according to condensation temperature in vacuum pneumatic, be condensed into knot
Crystal, achieve the effect that filtering vacuum air-flow, protect the purpose of mechanical vacuumizing apparatus.Peephole at cover upper end installation three,
Observation deep cooling cohesion layer thickness from different perspectives.
Description of the drawings
Fig. 1 is deep cooling vacuum filter structure diagram.
Fig. 2 is the airflow diversion blade construction figure of tower-like fan-shaped superposition.
Wherein 1 is can body, is the main body of entire vacuum metal tank body, for installing other assembly of elements.2 be tank bottom disk,
Mounted on can body in the following, for filling useless machinery oil.3 be useless machinery oil, for adsorbing dust.4 be inspection glass for oil level, for observing
Pasta situation.5 be fuel outlet valve, and useless machinery oil and adjustment oil level are replaced for clearing up.6 be air inlet, with setting for operated under vacuum
Standby vacuum-pumping tube road junction connects.7 be tubaeform circular arc isolated tube, makes to be divided into inside and outside two layers of gas channel in vacuum metal tank body.
8 be metal screen, for secondary filter dust.9 be fluid storage slot, for collecting the condensed matter liquid of ablation.10 be row
Valve is put, for discharging the condensed matter liquid of ablation.11 be airflow diversion blade, there is cold-trap effect, for will disappear above blade
Melt the liquid fallen to import in fluid storage slot, shunt vacuum pneumatic.12 be ablation defrosting air inlet pipe and valve, is removed for melting
White air inlet.13 be cover, is cryogenic refrigeration pipe installing zone.14 be bleeding point, the vacuum-pumping tube road junction with mechanical vacuumizing apparatus
Connection.15 be cryogenic refrigeration pipe, for cryogenic refrigeration.16 be ablation defrosting exhaust pipe and valve, for melting defrosting exhaust.17
For peephole, layer thickness is agglomerated for observing deep cooling.18 be deep cooling trapping pump, for providing cryogenic refrigeration source.19 be inner ring leaf
Piece, 20 are outer ring blade, there is cold-trap effect, for importing in fluid storage slot, shunting by the liquid that ablation is fallen above blade
Vacuum pneumatic.21 be isolation steel plate, for connecting inner ring blade and outer ring blade.22 be aperture, for by inner ring blade water conservancy diversion
The diversion trench of slot and outer ring blade penetrates through.
Specific embodiment
A kind of deep cooling vacuum filter of the present invention is melted according to the electron beam cold hearth that our unit introduces from foreign countries
Equipment production technology Demand Design is refined, suitable for being used in the equipment of any operated under vacuum.
A kind of deep cooling vacuum filter, it is characterised in that：In a vacuum metal tank body, a trumpet type circle is installed
Arc isolated tube makes to form annular air-flow path, vacuum pneumatic between the can body of vacuum metal tank body and trumpet type circular arc isolated tube
The centrifugal gravity for circularizing rotational flow downwards separates the granule dust in vacuum pneumatic, falls into vacuum metal tank body
Tank bottom disk gives up in machinery oil, and granular dust prevents reentrainment of dust after immersing useless machinery oil；
Metal filter screen is arranged in the middle part of can body, and the diameter of metal filter screen is less than the internal diameter of can body, can body and metal mistake
There are the gap of annular between strainer, the position where gap is provided with fluid storage slot, and gas is provided with above metal filter screen
Splitterr vanes are flowed, cryogenic refrigeration pipe is mounted in cover, and cover top is provided with defrosting gas outlet, from metal filter screen to cover
Space where top forms deep cooling filtering refrigeration area；
The vacuum pneumatic of metal filter screen is using metal screen secondary filter, and air-flow after secondary filter is using having
The airflow diversion blade of the tower-like fan-shaped superposition of cold-trap effect, the oil molecule to gasify in vacuum pneumatic attachment is isolated；Gas
Stream splitterr vanes make vacuum pneumatic filter refrigeration area uniformly through deep cooling, and the liquid parts in air-flow will condense upon deep cooling filtering system
On the cryogenic refrigeration pipe of cold-zone；
The condensation product on cryogenic refrigeration pipe is condensed upon, is fallen on after being passed through compressed air or hot wind ablation by the air inlet that defrosts
Above airflow diversion blade, liquid fluid storage slot is imported into, then receive through liquid through the liquid guide flow slot on airflow diversion blade
The liquid emission valve discharge centralized processing of tank bottom, the compressed air being passed through or hot wind are discharged by gas outlet of defrosting.
Trumpet type circular arc isolated tube in vacuum metal tank body is installed, makes to be divided into inside and outside two layers in vacuum metal tank body
Form annular air-flow path between the can body of gas channel, outer layer and vacuum metal tank body, the air inlet at can body is arranged on tank
On the side wall of body, opposite angle is formed with tubaeform circular arc isolated tube, vacuum pneumatic is made to be isolated along can body with tubaeform circular arc
Around downlink between pipe；Horn mouth gradually widened uplink vacuum pneumatic channel is gone up among trumpet type circular arc isolated tube, makes vacuum
Air-flow can gradually be evenly distributed in metal screen bottom.
The airflow diversion blade of tower-like fan-shaped superposition is provided simultaneously with cold-trap effect, the oil molecule of attachment isolation gasification；It is tower-like
The airflow diversion blade of sector superposition is divided into inner ring blade and outer ring blade, and the quantity of inner ring blade only has outer ring blade quantity
Half is the space in order to ensure vacuum pneumatic channel between inner ring blade；Into the blade lower edge upward 90 of sector superposition
Degree is turned up to form diversion trench, and aperture on steel plate is isolated between inner ring blade and outer ring blade by inner ring blade diversion trench and outer ring
Blade diversion trench penetrates through.
Along one week setting fluid storage slot of can body inner wall, metal screen, top installation air-flow are installed among fluid storage slot
Splitterr vanes, by the liquid guide flow above airflow diversion blade to fluid storage slot, the drain valve row through fluid storage trench bottom
Go out to concentrate environmental protection treatment.
Cover center of top is provided with the bleeding point of the circular entire cover of perforation, is evacuated in airflow diversion blade and cover
Mouthful between deep cooling filtering refrigeration area be uniformly distributed cryogenic refrigeration pipe, by deep cooling trap pump refrigeration, by vacuum pneumatic moisture,
Toxic, corrosive substance solidifies.
The deep cooling vacuum filter is mounted in the equipment of operated under vacuum and the pump-line of mechanical vacuumizing apparatus
Between, pipeline will be taken out and disconnected, air inlet 6 is connected to the equipment vacuum-pumping tube road junction of operated under vacuum, metal screen 8 is installed to liquid
Among 9 border of body container, airflow diversion blade 11 installed above, cover 13 is mounted on above can body 1, bleeding point 14 and machinery
The vacuum-pumping tube road junction connection of vaccum-pumping equipment, deep cooling trapping pump 18 are connect with cryogenic refrigeration pipe 15, and tank bottom disk 2 is packed into useless machinery
Oil 3 closes fuel outlet valve 5, drain valve 10, ablation defrosting air inlet pipe valve 12, ablation defrosting exhaust valve 16.
By 18 refrigeration of deep cooling trapping pump to the cryogenic temperature value of setting, vacuum pneumatic is through air inlet 6, into can body 1 and loudspeaker
Gas channel between shape circular arc isolated tube 7, around coming downwards on useless 3 pasta of machinery oil, centrifugal gravity is by partial particulate, powder
Dirt separation is immersed in useless machinery oil 3, and vacuum pneumatic passes through tubaeform circular arc isolated tube 7 from tubaeform 7 times mouths of circular arc isolated tube again
Intermediate gas flow path uplink, during the upper horn mouth of the vacuum pneumatic of uplink to tubaeform circular arc isolated tube 7 dispersion filtered by metal
Net 8 filters, and the vacuum pneumatic after filtering leads to after 11 uniform divided flows of airflow diversion blade around two layers of cryogenic refrigeration pipe 15
It crosses, cryogenic refrigeration pipe 15 will need the moisture agglomerated and other liquefaction, liquid ingredient to condense upon deep cooling system in vacuum pneumatic
On cold pipe, clean vacuum pneumatic is extracted out by bleeding point 14 by mechanical vacuumizing apparatus.
It is observed by peephole 17 and agglomerates layer thickness on cryogenic refrigeration pipe 15, need to melt coacervate on cryogenic refrigeration pipe 15
When, close the equipment of operated under vacuum connected on air inlet 6 and 14 both ends pipeline of bleeding point and the valve of mechanical vacuumizing apparatus
Door, deep cooling trapping pump 18 are closed, and open ablation defrosting air inlet pipe valve 12 and ablation defrosting exhaust valve 16.It is empty to be passed through compression
Gas or hot wind, coacervate melts 20 top diversion trench of the inner ring blade 19 for falling on airflow diversion blade and outer ring blade quickly, interior
Liquid on circle blade 19 is by being isolated on aperture 22 water conservancy diversion to outer ring blade 20 on steel plate 21, then liquid is imported liquid and is received
In tank 9, then environmental protection treatment is concentrated in the discharge of the liquid emission valve 10 through fluid storage trench bottom, after coacervate melts, is opened
The equipment of operated under vacuum and the valve of mechanical vacuumizing apparatus connected on air inlet 6 and 14 both ends pipeline of bleeding point, from new
Start deep cooling trapping pump 18, close drain valve 10, ablation defrosting air inlet pipe valve 12, ablation defrosting exhaust valve 16, continue
Into working condition.
Claims (5)
1. a kind of deep cooling vacuum filter, it is characterised in that：In a vacuum metal tank body, a tubaeform circle is installed
Arc isolated tube makes to form annular air-flow path, vacuum pneumatic between the can body of vacuum metal tank body and tubaeform circular arc isolated tube
The centrifugal gravity for circularizing rotational flow downwards separates the granule dust in vacuum pneumatic, falls into vacuum metal tank body
Tank bottom disk gives up in machinery oil, and granular dust prevents reentrainment of dust after immersing useless machinery oil；
Metal filter screen is arranged in the middle part of can body, and the diameter of metal filter screen is less than the internal diameter of can body, can body and metal filter screen
Between there are annular gap, the position where gap is provided with fluid storage slot, air-flow point is provided with above metal filter screen
Blade is flowed, cryogenic refrigeration pipe is mounted in cover, and cover top is provided with defrosting gas outlet, from metal filter screen to cover top
The space at place forms deep cooling filtering refrigeration area；
The vacuum pneumatic of metal filter screen is using metal screen secondary filter, and air-flow after secondary filter is using having cold-trap
The airflow diversion blade of the tower-like fan-shaped superposition of effect, the oil molecule to gasify in vacuum pneumatic attachment is isolated；Air-flow point
Stream blade makes vacuum pneumatic filter refrigeration area uniformly through deep cooling, and the liquid parts in air-flow will condense upon deep cooling filtering refrigeration area
Cryogenic refrigeration pipe on；
The condensation product on cryogenic refrigeration pipe is condensed upon, air-flow is fallen on after being passed through compressed air or hot wind ablation by the air inlet that defrosts
Above splitterr vanes, liquid is imported into fluid storage slot, then through fluid storage slot through the liquid guide flow slot on airflow diversion blade
The liquid emission valve discharge centralized processing of bottom, the compressed air being passed through or hot wind are discharged by gas outlet of defrosting.
2. a kind of deep cooling vacuum filter according to claim 1, it is characterised in that：It is installed in vacuum metal tank body
Tubaeform circular arc isolated tube makes to be divided into inside and outside two layers of gas channel in vacuum metal tank body, outer layer and vacuum metal tank body
Can body between form annular air-flow path, the air inlet at can body is arranged on the side wall of can body, is isolated with tubaeform circular arc
It is tubular in pairs to angle, make vacuum pneumatic along between can body and tubaeform circular arc isolated tube around downlink；Tubaeform circular arc every
From horn mouth gradually widened uplink vacuum pneumatic channel is gone up among pipe, vacuum pneumatic is enable gradually to be evenly distributed in metal filter
Sieve bottom.
3. a kind of deep cooling vacuum filter according to claim 1, it is characterised in that：The airflow diversion of tower-like fan-shaped superposition
Blade is provided simultaneously with cold-trap effect, the oil molecule of attachment isolation gasification；The airflow diversion blade of tower-like fan-shaped superposition is divided into inner ring
Blade and outer ring blade, the quantity of inner ring blade only have the half of outer ring blade quantity, are true between inner ring blade in order to ensure
The space of airflow path；Into sector superposition upward 90 degree of blade lower edge turn up to form diversion trench, inner ring blade with outside
The aperture being isolated on steel plate between blade is enclosed to penetrate through inner ring blade diversion trench and outer ring blade diversion trench.
4. according to a kind of deep cooling vacuum filter of claim 1 or 3, it is characterised in that：It is set within one week along can body inner wall
Fluid storage slot, fluid storage slot centre installation metal screen, top installation airflow diversion blade will airflow diversion blade top
Liquid guide flow to fluid storage slot, environmental protection treatment is concentrated in the drain valve discharge through fluid storage trench bottom.
5. a kind of deep cooling vacuum filter according to claim 1, it is characterised in that：Cover center of top is provided with circle
The entire cover of perforation bleeding point, the deep cooling filtering refrigeration area between airflow diversion blade and cover bleeding point is uniformly distributed
Cryogenic refrigeration pipe traps pump refrigeration by deep cooling, moisture, the toxic, corrosive substance in vacuum pneumatic is solidified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510111533.1A CN106139786B (en) | 2015-03-16 | 2015-03-16 | A kind of deep cooling vacuum filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510111533.1A CN106139786B (en) | 2015-03-16 | 2015-03-16 | A kind of deep cooling vacuum filter |
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| Publication Number | Publication Date |
|---|---|
| CN106139786A CN106139786A (en) | 2016-11-23 |
| CN106139786B true CN106139786B (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510111533.1A Active CN106139786B (en) | 2015-03-16 | 2015-03-16 | A kind of deep cooling vacuum filter |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6562329B1 (en) * | 2018-10-01 | 2019-08-21 | Ｆｔｂ研究所株式会社 | Vacuum pipe trap device, vacuum pipe trap system and pipe cleaning method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226052A (en) * | 2013-06-07 | 2014-12-24 | 林兆钧 | Small air filter |
| CN204193748U (en) * | 2014-11-02 | 2015-03-11 | 湖南净源环境工程有限公司 | A kind of integrated apparatus administering printing, advertising organic exhaust gas |
| CN204710016U (en) * | 2015-03-16 | 2015-10-21 | 青海聚能钛业有限公司 | A kind of deep cooling vacuum filter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2581022B1 (en) * | 2011-10-12 | 2014-05-21 | Black & Decker Inc. | A motor, fan and cyclonic seperation apparatus arrangement |
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2015
- 2015-03-16 CN CN201510111533.1A patent/CN106139786B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226052A (en) * | 2013-06-07 | 2014-12-24 | 林兆钧 | Small air filter |
| CN204193748U (en) * | 2014-11-02 | 2015-03-11 | 湖南净源环境工程有限公司 | A kind of integrated apparatus administering printing, advertising organic exhaust gas |
| CN204710016U (en) * | 2015-03-16 | 2015-10-21 | 青海聚能钛业有限公司 | A kind of deep cooling vacuum filter |
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| CN106139786A (en) | 2016-11-23 |
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Address after: 810007 Jin Xin Road, Qinghai, Xining, No. 6 Applicant after: Qinghai Juneng titanium industry Limited by Share Ltd Address before: 810007 Jin Xin Road, Qinghai, Xining, No. 6 Applicant before: Qinghai Supower Titanium Co., Ltd. |
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