CN205025592U - Air filtration system that makes an uproar falls in multistage high efficiency of integrated form - Google Patents
Air filtration system that makes an uproar falls in multistage high efficiency of integrated form Download PDFInfo
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- CN205025592U CN205025592U CN201520648924.2U CN201520648924U CN205025592U CN 205025592 U CN205025592 U CN 205025592U CN 201520648924 U CN201520648924 U CN 201520648924U CN 205025592 U CN205025592 U CN 205025592U
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- noise elimination
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Abstract
The utility model belongs to the technical field of gas turbine, a air filtration system that makes an uproar falls in multistage high efficiency of integrated form is disclosed. The utility model discloses a filter the room and set up thick effect filter equipment, medium effeciency filter and the high efficiency filter in filtering the room, slightly imitating filter equipment and including connecting rod and the polylith thick effect filter of range from top to bottom, each upper end of slightly imitating the filter articulates in filtering the room, and each other end of slightly imitating the filter all articulates on same connecting rod, and the bottom surface that is located thick effect filter bottom articulates has the cylinder or the pneumatic cylinder that can stretch out and draw back, the other end of cylinder or pneumatic cylinder articulates in filtering the room, be provided with noise reduction module in the filtration room, noise reduction module sets up at the inlet end of slightly imitating filter equipment.
Description
Technical field
The utility model belongs to gas turbine technology field, is specifically related to a kind of integrated type multi-stage high-efficient noise-reducing air filtering system for air purification, for carrying out purification filtering to the air inlet of gas turbine.The utility model also can be used for the air purification of other field.
Background technique
Gas turbine be a kind of using the gas of continuous-flow as working medium the thermal power transfer rotary power machinery that is mechanical work.In the main flow of air and combustion gas, primarily of this three large parts composition gas turbine cycle of gas compressor, firing chamber and combustion gas turbine.
Gas compressor sucks air from ambient atmosphere environment, and compresses step by step through axial-flow compressor and make it supercharging, simultaneously humidity of the air also corresponding raising; Pressurized air is pressed to firing chamber and the combustion gas of fuel mix production High Temperature High Pressure sprayed into; And then enter into turbine expansion work, promote turbine and drive gas compressor High Rotation Speed together with outer load rotor, the chemical energy achieving gas and liquid fuel is mechanical energy, and exports electric work.
The inlet stream of gas turbine blower and the combustion air of gas turbine must carry out purified treatment before being introduced into gas compressor.Modal is adopt the fabric filter of machinery to purify above-mentioned air inlet, and the corrosive and dirty particle of preventing belt enters gas compressor and turbine, thus prevents corrosion and the breakage of equipment, and the workload reducing cleaning and keep in repair.Gas turbine for the production of the energy needs a large amount of combustion airs, therefore, even the impurity of trace all can cause in use producing a large amount of sediments, so require filtration combustion air as far as possible effectively.
The air draught entering gas turbine adopts air filtering system to filter, because the air requirements amount of gas turbine is larger, therefore filtration system is generally all set to the structure of filtering room, such as application number be 201110448766.2 patent of invention disclose a kind of air filter, first order filter, second level filter and third level filter, in described first order filter, described second level filter and the spaced gas-entered passageway being sequentially arranged in gas turbine generator group of described third level filter.Air filter also comprises interval and is fixed on multiple filter frames in the gas-entered passageway of described gas turbine generator group, and described second level filter and described third level filter are separately positioned on described filter frame.Air filter also comprises embedded part, and filter frame described in each is fixedly installed in the gas-entered passageway of described gas turbine generator group by described embedded part.Described in each, the periphery of filter frame is provided with mounting hole, and described filter frame is fixedly mounted in the gas-entered passageway of gas turbine generator group by described mounting hole and described embedded part.Described in each, filter frame is provided with square hole, and described in each, the periphery of square hole is provided with a unit frame, and described second level filter or described third level filter operable are arranged on corresponding described unit frame.The periphery of second level filter and third level filter and the periphery of described unit frame leave gap, and described gap is sealed by filter seal pad.Filter frame described in each is provided with some fastening pieces, fastening piece comprises pressing plate and the screw of band through hole, described pressing plate backstop is in the periphery edge place of the described third level filter of the described second level filter of correspondence or correspondence, and screw to be crossed described second level filter or described third level filter backstop after the through hole of described pressing plate in unit frame.Third level filter is bag filter; First order filter is venetian blind inertial filter, and second level filter is folded metal filtration web filter.
But existing filtration system also exists the problem of soundproof effect difference.
Model utility content
The utility model also exists the problem of soundproof effect difference in order to solve existing filtration system, and provides a kind of integrated type multi-stage high-efficient noise-reducing air filtering system, can carry out noise reduction process, reduce the pollution to environment to air-flow.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts is:
A kind of integrated type multi-stage high-efficient noise-reducing air filtering system, comprise and filter room and be arranged on the thick effect filtrating equipment, medium efficient filter and the high efficiency particulate air filter that filter in room, described high efficiency particulate air filter, medium efficient filter are connected for detachable entirety with thick effect filtrating equipment through mounting fixture successively, are provided with access path between described thick effect filtrating equipment and filtration room, described thick effect filtrating equipment comprises the low efficient filter that connecting rod and polylith are arranged above and below, the upper end thereof of each low efficient filter is in filtration room, the other end of each low efficient filter is all hinged on same connecting rod, the bottom surface being positioned at low efficient filter is bottom hinged with the cylinder or oil hydraulic cylinder that can stretch, the other end of described cylinder or oil hydraulic cylinder is hinged on and filters in room, it is characterized in that, noise reduction module is provided with in described filtration room, described noise reduction module is arranged on the inlet end of thick effect filtrating equipment, described noise reduction module comprises cylindrical shell, the inlet end of described cylindrical shell is provided with air induction mast, the outer race of described air induction mast is provided with fiber acoustic tube, the barrel of described air induction mast and fiber acoustic tube all offers some through holes, the interlaced layout of through hole in the through hole of described air induction mast and fiber acoustic tube, the rear end of described air induction mast is provided with noise elimination module, described noise elimination module comprises two the first noise elimination modules and at least one second noise elimination module, described second noise elimination modular spacing be arranged between two first noise elimination modules, described first noise elimination module comprises two piece of first plumbous fiber sound absorption plate, is provided with the first glass wool layer between two first plumbous fiber sound absorption plate.
Described second noise elimination module comprises two piece of second plumbous fiber sound absorption plate, is provided with the second glass wool layer and layer of polystyrene foam between two second plumbous fiber sound absorption plate.
Described first plumbous fiber sound absorption plate and the second plumbous fiber sound absorption plate evenly offer some through holes.
Described first noise elimination module and the second noise elimination module are S shape.
Also be provided with spiral deflector in described air induction mast, the through hole on air induction mast barrel is opened between adjacent spiral deflector.
The outer race of described fiber acoustic tube is provided with arc plate.
Described low efficient filter through connecting rod rotating shaft together with rod hinge connection.
The periphery of described low efficient filter is coated with sealed frame.
Sealing gasket is provided with between described low efficient filter and sealed frame.
Described connecting rod offers pin shaft hole, and described connecting rod rotating shaft, through described pin shaft hole and rod hinge connection, is provided with rubber elasticity block between pin shaft hole and connecting rod rotating shaft.
The front end of described thick effect filtrating equipment is equipped with water mist separator.
The front end of described water mist separator is provided with the air intake device be arranged above and below of at least two, and described air intake device comprises the baffle plate and the base plate through with the external world that are obliquely installed.
Described mounting fixture comprises the mounting plate be set between the adjacent high efficiency particulate air filter in left and right, described mounting plate is connected with jig plate, described jig plate is hinged with the first articulated slab and the second articulated slab, described first articulated slab and the second articulated slab are hinged with handle, described first articulated slab extends dunnage, described dunnage is connected with the adjusting screw rod for clamping low efficient filter, and described first articulated slab, the second articulated slab, dunnage, adjusting screw rod and handle composition is used for the self-locking mechanism of fastening thick effect filtrating equipment, medium efficient filter and high efficiency particulate air filter.
Be provided with sealing gasket between described thick effect filtrating equipment and medium efficient filter, between described medium efficient filter and high efficiency particulate air filter, be provided with sealing gasket.
Described medium efficient filter is set in quad seal lining.
Compared with prior art, the utility model has following beneficial effect:
Integrated type multi-stage high-efficient noise-reducing air filtering system of the present utility model, comprise and filter room and be arranged on the thick effect filtrating equipment, medium efficient filter and the high efficiency particulate air filter that filter in room, described high efficiency particulate air filter, medium efficient filter are connected for detachable entirety with thick effect filtrating equipment through mounting fixture successively, are provided with access path between described thick effect filtrating equipment and filtration room, described thick effect filtrating equipment comprises the low efficient filter that connecting rod and polylith are arranged above and below, the upper end thereof of each low efficient filter is in filtration room, the other end of each low efficient filter is all hinged on same connecting rod, the bottom surface being positioned at gas-entered passageway low efficient filter is bottom hinged with the cylinder or oil hydraulic cylinder that can stretch, and the other end of described cylinder or oil hydraulic cylinder is hinged on the bottom in gas-entered passageway, noise reduction module is provided with in described filtration room, described noise reduction module is arranged on the inlet end of thick effect filtrating equipment, described noise reduction module comprises cylindrical shell, the inlet end of described cylindrical shell is provided with air induction mast, the outer race of described air induction mast is provided with fiber acoustic tube, the barrel of described air induction mast and fiber acoustic tube all offers some through holes, the interlaced layout of through hole in the through hole of described air induction mast and fiber acoustic tube, the rear end of described air induction mast is provided with noise elimination module, described noise elimination module comprises two the first noise elimination modules and at least one second noise elimination module, described second noise elimination modular spacing be arranged between two first noise elimination modules, described first noise elimination module comprises two piece of first plumbous fiber sound absorption plate, is provided with the first glass wool layer between two first plumbous fiber sound absorption plate, the utility model, by arranging noise reduction module, carries out repeatedly noise reduction process, thus plays the effect of noise reduction, reduces the pollution of NOISE ON ENVIRONMENT.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model, and wherein the direction of arrow represents the flow direction of air;
Fig. 2 is the structural representation of the thick effect filtrating equipment of the utility model one embodiment, and wherein the direction of arrow represents the flow direction of air;
Plan view structural representation when Fig. 3 is thick effect filtrating equipment unlatching (low efficient filter work) of the present utility model;
Side view structural representation when Fig. 4 is thick effect filtrating equipment unlatching (low efficient filter work) of the present utility model;
Structural representation when Fig. 5 is thick effect filtrating equipment closedown (low efficient filter does not work) of the present utility model;
Fig. 6 is the connection diagram of connecting rod of the present utility model and connection rotating shaft;
Fig. 7 is the plan view mounting structure schematic diagram of the utility model tertiary filter (namely slightly imitating filtrating equipment, medium efficient filter and high efficiency particulate air filter);
Fig. 8 is the structural representation of noise reduction module of the present utility model;
Fig. 9 is the structural representation of the first noise elimination module of the present utility model;
Figure 10 is the structural representation of the second noise elimination module of the present utility model;
Mark in figure: 1, filter room, 2, thick effect filtrating equipment, 3, medium efficient filter, 4, high efficiency particulate air filter, 5, access path, 6, low efficient filter, 7, water mist separator, 8, baffle plate, 9, base plate, 10, cylinder, 11, connecting rod, 12, sealed frame, 13, rubber elasticity block, 14, connecting rod rotating shaft, 15, mounting plate, 16, jig plate, 17, quad seal lining, 18, adjusting screw rod, 19, dunnage, 20, first articulated slab, 21, handle, 22, second articulated slab, 23, noise reduction module, 24, cylindrical shell, 25, air induction mast, 26, spiral deflector, 27, fiber acoustic tube, 28, arc plate, 29, first noise elimination module, 30, second noise elimination module, 31, first plumbous fiber sound absorption plate, 32, first glass wool layer, 33, through hole, 34, second plumbous fiber sound absorption plate, 35, second glass wool layer, 36, layer of polystyrene foam.
Embodiment
Below in conjunction with embodiment, the utility model will be further described, and described embodiment is only the utility model part embodiment, is not whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art, not making other embodiments used obtained under creative work prerequisite, belongs to protection domain of the present utility model.
Integrated type multi-stage high-efficient noise-reducing air filtering system of the present utility model, comprise and filter room 1 and be arranged on the thick effect filtrating equipment 2, medium efficient filter 3 and the high efficiency particulate air filter 4 that filter in room 1, described high efficiency particulate air filter 4, medium efficient filter 3 are connected for detachable entirety with thick effect filtrating equipment 2 through mounting fixture successively, are provided with access path 5 between described thick effect filtrating equipment 2 and filtration room 1, described thick effect filtrating equipment 2 comprises the low efficient filter 6 that connecting rod 11 and polylith are arranged above and below, the upper end thereof of each low efficient filter 6 is in filtration room 1, the other end of each low efficient filter 6 is all hinged on same connecting rod 11, the bottom surface being positioned at low efficient filter 6 is bottom hinged with the cylinder 10 or oil hydraulic cylinder that can stretch, and the other end of described cylinder 10 or oil hydraulic cylinder is hinged on and filters in room 1, noise reduction module 23 is provided with in described filtration room 1, described noise reduction module 23 is arranged on the inlet end of thick effect filtrating equipment 2, described noise reduction module 23 comprises cylindrical shell 24, the inlet end of described cylindrical shell 24 is provided with air induction mast 25, the outer race of described air induction mast 25 is provided with fiber acoustic tube 27, the barrel of described air induction mast 25 and fiber acoustic tube 27 all offers some through holes, the interlaced layout of through hole in the through hole of described air induction mast 25 and fiber acoustic tube 27, the rear end of described air induction mast 25 is provided with noise elimination module, described noise elimination module comprises two first noise elimination modules 29 and at least one second noise elimination module 30, described second noise elimination module 30 interval be arranged between two first noise elimination modules 29, described first noise elimination module 29 comprises two piece of first plumbous fiber sound absorption plate 31, is provided with the first glass wool layer 32 between two first plumbous fiber sound absorption plate 31, the utility model, by arranging noise reduction module, carries out repeatedly noise reduction process, thus plays the effect of noise reduction, reduces the pollution of NOISE ON ENVIRONMENT.
Described second noise elimination module 30 comprises two piece of second plumbous fiber sound absorption plate 34, is provided with the second glass wool layer 35 and layer of polystyrene foam 36 between two second plumbous fiber sound absorption plate 34.
Described first plumbous fiber sound absorption plate 31 and the second plumbous fiber sound absorption plate 34 evenly offer some through holes 33.
As a kind of preferred mode of the utility model, described first noise elimination module 29 and the second noise elimination module 30 are in S shape.
Also be provided with spiral deflector 26 in described air induction mast 25, the through hole on air induction mast 25 barrel is opened between adjacent spiral deflector 26.By arranging spiral deflector, air-flow can be distributed uniformly in air induction mast 25, improve the effect of noise elimination noise reduction further.
The outer race of fiber acoustic tube 27 of the present utility model is provided with arc plate 28, by arc plate 28, air-flow is delivered to stably the noise elimination module of rear end, improves flow distribution evenness, ensures the effect of the noise elimination noise reduction of follow-up noise elimination module.
Of the present utility modelly to be concentrated in together slightly imitating filtrating equipment, medium efficient filter and high efficiency particulate air filter by mounting fixture, realizing clamping and the dismounting of tertiary filter fast, improve the convenience of staff's repair and maintenance.The utility model is due to integrated by tertiary filter, therefore one access path is set when room is filtered in construction, thus decrease the cost built and filter room, improve the working efficiency that staff safeguards tertiary filter simultaneously, reduce the cost safeguarded.Owing to filtering the width in room and highly all higher, therefore compare the width of access path together with decreasing with prior art, thus greatly reduce the cost filtering room construction.
Therefore, compared to prior art, the utility model reduces the cost manufactured and safeguard.
When air quality poor (haze, catkin weather etc.) time, under each low efficient filter 6 is all tilted to be arranged above and below filtration room 1 in, low efficient filter 6 is started working, coarse filtration is carried out to the air entered, filter out large particle thus protect self-cleaning filter (medium efficient filter 3), improving the working life of self-cleaning filter; When air quality is good time, under the effect of cylinder 10 or oil hydraulic cylinder, make each low efficient filter 6 turn to horizontal position, low efficient filter 6 is closed can not carry out work, is directly filtered by medium efficient filter and high efficiency particulate air filter.Thus realize to decide opening and closing low efficient filter 6 according to weather, solve the impact not using low efficient filter 6 on automatically cleaning filter core, avoid the impact of Long-Time Service low efficient filter 6 on gas handling system crushing simultaneously.
The utility model controls the opening and closing of low efficient filter by cylinder 10 or oil hydraulic cylinder simultaneously, without the need to artificial unloading and installation, reduces labour cost.The utility model by manually carrying out the flexible of control cylinder 10 or oil hydraulic cylinder, also can arrange air quality probe and detecting air quality, and the SC sigmal control cylinder 10 of air quality probe or the flexible of oil hydraulic cylinder, improve practicability of the present utility model.Cylinder 10 of the present utility model or oil hydraulic cylinder also can be replaced with the shrinking structure of mechanical structure, as long as can realize Telescopic, all belong to protection domain of the present utility model.
As the mode of a kind of selection of the utility model, low efficient filter 3 is hinged through connecting rod rotating shaft 14 and connecting rod 11.Connecting rod 11 offers pin shaft hole, connecting rod rotating shaft 14 through described pin shaft hole and connecting rod 11 hinged, be provided with rubber elasticity block 13 between pin shaft hole and connecting rod rotating shaft 14, thus realize the sealing between connecting rod 11 and connecting rod rotating shaft 14.
The periphery of described low efficient filter 6 is coated with sealed frame 12, improves the effect of sealing, thus improves airfiltering efficiency.
Further, sealing gasket is provided with between low efficient filter 6 and sealed frame 12.
The front end of thick effect filtrating equipment of the present utility model is equipped with water mist separator 7, for carrying out water smoke separation to the air entered, ensures the humidity of filtered air.Wherein water mist separator belongs to prior art products, and those skilled in the art understands and understands, and does not repeat them here.
The front end of described water mist separator 7 is provided with the air intake device be arranged above and below of at least two, described air intake device comprises the baffle plate 8 and the base plate 9 through with the external world that are obliquely installed, extraneous air enters through base plate, enter under the effect of baffle plate and filter in room, ensure the uniformity that air enters, improve the effect of filtering.
As a kind of preferred mode of the utility model, mounting fixture comprises the mounting plate 15 be set between the adjacent high efficiency particulate air filter in left and right 4, described mounting plate 15 is connected with jig plate 16, described jig plate 16 is hinged with the first articulated slab 20 and the second articulated slab 22, described first articulated slab 20 and the second articulated slab 22 are hinged with handle 21, described first articulated slab 20 extends dunnage 19, described dunnage 19 is connected with the adjusting screw rod 18 for clamping thick effect filtrating equipment 2, described first articulated slab 20, second articulated slab 22, dunnage 19, adjusting screw rod 918 and handle 21 form and are used for fastening thick effect filtrating equipment 2, the self-locking mechanism of medium efficient filter 3 and high efficiency particulate air filter 4.Wherein the first articulated slab 20 is connected substantially L-shaped structure with dunnage 19, and the first articulated slab 20 and dunnage 19 can form by overall processing.
Adjusting screw rod 18 of the present utility model also has the effect of adjustment, when filtrating equipment, medium efficient filter and high efficiency particulate air filter are slightly imitated in installation time, due to the existence of error, adjusting screw rod 18 can regulate according to different situations, ensure that mounting fixture can self-locking, thus improve practicability of the present utility model.
In order to improve filtration effect, prevent gas leakage, improve practicability of the present utility model, be provided with sealing gasket between thick effect filtrating equipment 2 and medium efficient filter 3, between described medium efficient filter 3 and high efficiency particulate air filter 4, be provided with sealing gasket.
In order to improve the filtering effect of medium efficient filter, described medium efficient filter 3 to be set in quad seal lining 17.
Claims (10)
1. an integrated type multi-stage high-efficient noise-reducing air filtering system, comprise and filter room and be arranged on the thick effect filtrating equipment, medium efficient filter and the high efficiency particulate air filter that filter in room, described high efficiency particulate air filter, medium efficient filter are connected for detachable entirety with thick effect filtrating equipment through mounting fixture successively, are provided with access path between described thick effect filtrating equipment and filtration room, described thick effect filtrating equipment comprises the low efficient filter that connecting rod and polylith are arranged above and below, the upper end thereof of each low efficient filter is in filtration room, the other end of each low efficient filter is all hinged on same connecting rod, the bottom surface being positioned at low efficient filter is bottom hinged with the cylinder or oil hydraulic cylinder that can stretch, the other end of described cylinder or oil hydraulic cylinder is hinged on and filters in room, it is characterized in that, noise reduction module is provided with in described filtration room, described noise reduction module is arranged on the inlet end of thick effect filtrating equipment, described noise reduction module comprises cylindrical shell, the inlet end of described cylindrical shell is provided with air induction mast, the outer race of described air induction mast is provided with fiber acoustic tube, the barrel of described air induction mast and fiber acoustic tube all offers some through holes, the interlaced layout of through hole in the through hole of described air induction mast and fiber acoustic tube, the rear end of described air induction mast is provided with noise elimination module, described noise elimination module comprises two the first noise elimination modules and at least one second noise elimination module, described second noise elimination modular spacing be arranged between two first noise elimination modules, described first noise elimination module comprises two piece of first plumbous fiber sound absorption plate, is provided with the first glass wool layer between two first plumbous fiber sound absorption plate.
2. integrated type multi-stage high-efficient noise-reducing air filtering system according to claim 1, it is characterized in that, described second noise elimination module comprises two piece of second plumbous fiber sound absorption plate, is provided with the second glass wool layer and layer of polystyrene foam between two second plumbous fiber sound absorption plate.
3. integrated type multi-stage high-efficient noise-reducing air filtering system according to claim 2, is characterized in that, described first plumbous fiber sound absorption plate and the second plumbous fiber sound absorption plate evenly offer some through holes.
4. integrated type multi-stage high-efficient noise-reducing air filtering system according to claim 3, it is characterized in that, described first noise elimination module and the second noise elimination module are S shape.
5., according to the arbitrary described integrated type multi-stage high-efficient noise-reducing air filtering system of claim 1-4, it is characterized in that, be also provided with spiral deflector in described air induction mast, the through hole on air induction mast barrel is opened between adjacent spiral deflector.
6. integrated type multi-stage high-efficient noise-reducing air filtering system according to claim 5, it is characterized in that, the outer race of described fiber acoustic tube is provided with arc plate.
7. integrated type multi-stage high-efficient noise-reducing air filtering system according to claim 6, is characterized in that, described low efficient filter through connecting rod rotating shaft together with rod hinge connection.
8. integrated type multi-stage high-efficient noise-reducing air filtering system according to claim 7, it is characterized in that, the periphery of described low efficient filter is coated with sealed frame.
9. integrated type multi-stage high-efficient noise-reducing air filtering system according to claim 8, is characterized in that, be provided with sealing gasket between described low efficient filter and sealed frame.
10. integrated type multi-stage high-efficient noise-reducing air filtering system according to claim 9, is characterized in that, described connecting rod offers pin shaft hole, and described connecting rod rotating shaft, through described pin shaft hole and rod hinge connection, is provided with rubber elasticity block between pin shaft hole and connecting rod rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520648924.2U CN205025592U (en) | 2015-08-26 | 2015-08-26 | Air filtration system that makes an uproar falls in multistage high efficiency of integrated form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520648924.2U CN205025592U (en) | 2015-08-26 | 2015-08-26 | Air filtration system that makes an uproar falls in multistage high efficiency of integrated form |
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| Publication Number | Publication Date |
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| CN205025592U true CN205025592U (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520648924.2U Expired - Fee Related CN205025592U (en) | 2015-08-26 | 2015-08-26 | Air filtration system that makes an uproar falls in multistage high efficiency of integrated form |
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| CN (1) | CN205025592U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089801A (en) * | 2015-08-26 | 2015-11-25 | 成都博世德能源科技股份有限公司 | Integrated multi-stage efficient noise-reduction air filtering system |
-
2015
- 2015-08-26 CN CN201520648924.2U patent/CN205025592U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089801A (en) * | 2015-08-26 | 2015-11-25 | 成都博世德能源科技股份有限公司 | Integrated multi-stage efficient noise-reduction air filtering system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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