CN208574346U - A kind of the gas-solid separator double-deck filter disc and gas-solid separator - Google Patents
A kind of the gas-solid separator double-deck filter disc and gas-solid separator Download PDFInfo
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- CN208574346U CN208574346U CN201820357060.2U CN201820357060U CN208574346U CN 208574346 U CN208574346 U CN 208574346U CN 201820357060 U CN201820357060 U CN 201820357060U CN 208574346 U CN208574346 U CN 208574346U
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Abstract
The utility model relates to a kind of filter devices, especially with the aerial inertia motion characteristic of solid particle, solid and pure air in air are made to separate gas solid separation bilayer filter plate and gas-solid separator.A kind of gas-solid separator of the utility model double-deck filter disc, including punching blinds filter plate and punched-plate.The punching blinds filter plate and the punched-plate cooperate up and down, hole on the punched-plate is corresponding with the blinds hole on the punching blinds filter plate and forms clean wind passage, the air outlet sectional area of the clean wind passage is less than the air inlet sectional area of the clean wind passage, the clean wind passage is air inlet by the punching blinds filter plate side, and the clean wind passage is air outlet by the punched-plate side.The utility model has structure simple, and manufacturing cost is low, and ventilation quantity is big, the good advantage of filter sand effect.
Description
Technical field
The utility model relates to a kind of filter device, especially with the aerial inertia motion characteristic of solid particle,
Solid and pure air in air is set to separate gas solid separation bilayer filter plate and gas-solid separator.
Background technique
Currently, the gas-solid separator (sand-filtering machine or separator) of the prior art is all using principle of inertia.It is such as most common
Cyclone separator.When sand and air mixture enter gas-solid separator simultaneously, and pass through the filter core of gas-solid separator, due to
The bigger quality of dust and natural motional inertia, air will be separated with sand, and dust continues to specially designed track cloud
Movement, until enter the container for collecting dust, and air can change the direction of motion, export through filter core.
Except the separation of the most common cyclone gas-solid is outer, there are mainly two types of existing gas-solid separators, a kind of for shown in Fig. 1, interior
The filter core of portion's filter sand is made of monolithic blinds.This structure drafting efficiency is high but filter sand effect is excessively poor；Another kind is Fig. 2 institute
Show, be to there is the filter plate of multiple bendings to be welded using V-structure, air duct compared with the first complexity, filter sand effect compared with
Good, single-pass air quantity is lower, and manufacturing cost is higher, and manufacture difficulty is big.
Thus, it is good how to provide a kind of filter sand effect, and ventilation quantity is big, the gas-solid separator of easy making process becomes industry urgently
Technical problem to be solved.
Summary of the invention
The goal of the invention of the utility model is, provides a kind of easy making process, and structure is simple, and manufacturing cost is low, and divulges information
Amount is big, the good double-deck filter plate of filter sand effect.
One of goal of the invention of the utility model is achieved in that
A kind of the gas-solid separator double-deck filter disc, including punching blinds filter plate and punched-plate.The punching blinds filter plate and
The punched-plate cooperates up and down, and the hole on the punched-plate is corresponding with the blinds hole on the punching blinds filter plate and forms net wind
Channel, the air outlet sectional area of the clean wind passage are less than the air inlet sectional area of the clean wind passage, and the clean wind passage leans on
The punching blinds filter plate side is air inlet, and the clean wind passage is air outlet by the punched-plate side.
Further, the punching blinds filter plate and the punched-plate are superimposed and fix.It can be the punching blinds filter
Plate is directly superimposed with the punched-plate and mutually fixes.
Further, the hole on the punched-plate and the blinds hole on the punching blinds filter plate correspond；It can also be
Hole on the punched-plate is corresponding with the blinds hole interval on the punching blinds filter plate.
The another object invention of the utility model is that provide a kind of easy making process, structure is simple, and manufacturing cost is low, and
Ventilation quantity is big, the good gas-solid separator of filter sand effect.
One of goal of the invention of the utility model is achieved in that
A kind of gas-solid separator, including cabinet, the cabinet two sides are equipped with opening；The double-deck filter plate is placed in the cabinet simultaneously
It is fixed with the cabinet, the cabinet is divided into mixing air duct and net wind air duct two parts by the bilayer filter plate；The mixing
The tail portion in air duct connects sand output line；Wherein, the double-deck filter plate forms with punching blinds filter plate and punched-plate, the punching
Hole on plate is corresponding with the blinds hole on the punching blinds filter plate and forms clean wind passage, and the air inlet of the clean wind passage is cut
Area is greater than the air outlet sectional area of the clean wind passage.Wherein, the circulation of mixing air duct is the mixing of air and solid particle
Object, net wind air duct circulation is pure air；Mix the tail portion, that is, particulate matter outlet in air duct.
In above scheme, the punching blinds filter plate and the punched-plate are directly superimposed fixation.The punching blinds filter plate
Connector can also be set between the punched-plate.
In above scheme, the angle of the center line of the punched-plate and the cabinet is not less than 5 ° and is not more than 30 °.
In above scheme, the blinds hole on hole and the punching blinds filter plate on the punched-plate is corresponded；It can also
It is that hole on the punched-plate is corresponding with the blinds hole interval on the punching blinds filter plate.
In above scheme, it is set to bending on the punched-plate, is fixed by the bending and the cabinet.
In the utility model, because the air outlet sectional area of clean wind passage (channel of pure air) is less than the clean wind passage
Air inlet sectional area, to reduce clean air in the air velocity of air outlet, and then make clean air in air outlet
Air velocity is far below speed of the solid particle in hybrid channel overdraught, relative low speeds of the final cleaning air in clean wind passage
Air-flow can not reverse particulate matter export direction air high speed particulate matter the direction of motion and realize filtering.
The beneficial effects of the utility model are as follows:
1, efficient gas solid separation can be carried out to 5 microns of diameter and the above solid particulate matter.
2, complexity is processed compared with punched-plate due to punching blinds filter plate, the utility model is more complex using punched-plate to be made into
Bending part, and punching blinds filter plate is then made into the stamping parts that can directly process, by rivet by punching blinds filter plate
It is fixed on punched-plate.Cost of goods manufactured is greatly reduced.
3, the utility model while ventilation quantity greatly improved, also greatly improved using the double-deck superposition filter-plate structure
Filter sand effect.
Detailed description of the invention
Fig. 1 is the schematic diagram -1 of prior art sand filter.
Fig. 2 is the schematic diagram -2 of prior art sand filter.
Fig. 3 is the punching blinds filter plate schematic diagram of an embodiment of the present invention.
Fig. 4 is the punched-plate schematic diagram of an embodiment of the present invention.
Fig. 5 is an embodiment of the present invention bilayer filter-plate structure schematic diagram.
Fig. 6 is an embodiment of the present invention bilayer filter plate front schematic view.
Fig. 7 is an embodiment of the present invention bilayer filter plate reverse side schematic diagram.
Fig. 8 is the schematic diagram of an embodiment of the present invention sand filter.
Fig. 9 is the schematic diagram -1 of an embodiment of the present invention sand filter.
Figure 10 is the schematic diagram -2 of an embodiment of the present invention sand filter.
Figure 11 is the schematic diagram -3 of an embodiment of the present invention sand filter.
Figure 12 is the schematic diagram -4 of an embodiment of the present invention sand filter.
Figure 13 is the schematic diagram -5 of an embodiment of the present invention sand filter.
Figure 14 is the schematic diagram -6 of an embodiment of the present invention sand filter.
In figure:
1 cabinet, 10 left plates, 12 epipleurals, 13 lower side panels, 14 sand output lines, 15 right side plates,
22 superposition filter disc partitions, 2a bilayer filter plate, 2b bilayer filter plate,
3 punching blinds filter plates, 31a1 blinds hole, 31b1 blinds hole,
4 punched-plates, 41 holes, the hole 41a, the hole 41b,
5a ventilation air port, 5b ventilation air port, 8a mixing air duct, 8b mixing air duct
9a clean wind passage, 91a air inlet, 92a air outlet, 9b clean wind passage, 91b air inlet,
92b air outlet, 91a1 air inlet, 92a1 air outlet, 91a2 air inlet, 92a2 air outlet,
The angle of the center line of A1 punched-plate and cabinet；The angle of the center line of A2 punched-plate and cabinet.
Specific embodiment
The utility model is described further with reference to the accompanying drawing, following embodiment is only preference, is not pair
The scope of the utility model limits, on the contrary, the purpose is to wish to cover various changes and have being arranged in for equality
The utility model is intended in the scope of the scope of the patents applied.
Embodiment 1:
The utility model is described further below with reference to Fig. 3 to Fig. 7, Fig. 9:
A kind of the gas-solid separator double-deck filter disc, including punching blinds filter plate 3 and punched-plate 4.
Blinds filter plate 3 is equipped with multiple rows of parallel blinds hole 31.
Punched-plate 4 is equipped with multiple rows of parallel hole 41.
Punching blinds filter plate 3 and about 4 punched-plate are directly superimposed, and punched-plate 4 is fixed on punching blinds filter plate 3 by rivet
4 on punched-plate.The hole 41 on blinds hole 31 and punched-plate 4 on blinds filter plate 3 corresponds.Blinds hole 31 and 4 shape of punched-plate
At clean wind passage 9, clean wind passage 9 includes air inlet 91 and air outlet 92；91 sectional area of air inlet of clean wind passage 9 is greater than net wind
The sectional area of the air outlet 92 in channel 9.
Embodiment 2:
The utility model is described further below with reference to Fig. 3 to Fig. 9:
A kind of gas-solid separator, including cabinet 1.1 two sides of cabinet are equipped with opening；Including for the mixed of air and solid particle
It closes object and enters ventilation air port；And pure air outlet and solid particulate matter collection port.
Cabinet 1 forms one by rivet interlacement respectively by left plate 10 and right side plate 15 and epipleural 12 and lower side panel 13
Outline border.
The double-deck filter plate (2a, 2b) is placed in cabinet 1 and fixes with cabinet 1.Superposition filter disc partition 2 is placed in cabinet 1, can root
According to demand setting 1 to N number of superposition filter disc partition, multiple units will be divided into cabinet, N is natural number.Each unit is equipped with
Mix air duct and ventilation air port and clean wind passage.
Superposition filter disc partition 2 passes through and forms unit first with left plate 10 and right side plate 15 after rivet is connect with epipleural 12；
Unit first is equipped with ventilation air port 5a and mixing air duct 8a.Air duct 8a is mixed by superposition filter disc partition 2 and left plate 10 and right side plate
15 and bilayer filter plate 2a is formed.Mix the channel for the mixture that air duct 8a is air and solid particle.Mix the tail of air duct 8a
Portion connects sand output line 14.
Superposition filter disc partition 2 passes through and forms unit second with left plate 10 and right side plate 15 after rivet is connect with lower side panel 13；
Unit first and second is equipped with ventilation air port 5b and mixing air duct 8b.Air duct 8b is mixed by superposition filter disc partition 2 and left plate 10 and right side
Plate 15 and bilayer filter plate 2b are formed.Mix the channel for the mixture that air duct 8b is air and solid particle.Mix air duct 8b's
Tail portion connects sand output line 14.
The double-deck filter plate 2a is directly superimposed by punching blinds filter plate 3a and punched-plate 4a and is formed by rivet fixation.Blinds filter plate
3a is equipped with multiple rows of parallel blinds hole 31a.Punched-plate 4a is equipped with multiple rows of parallel hole 41a.The hundred of punching blinds filter plate 3a
Hole 41a on leaf hole 31a and punched-plate 4a corresponds to form clean wind passage 9a, and clean wind passage 9a includes air inlet 91a and goes out
Air port 92a；And the sectional area of air outlet 92a of the air inlet 91a sectional area of clean wind passage 9a greater than clean wind passage 9a.
The double-deck filter plate 2b is directly superimposed by punching blinds filter plate 3b and punched-plate 4b and is formed by rivet fixation.Blinds filter plate
3b is equipped with multiple rows of parallel blinds hole 31b.Punched-plate 4b is equipped with multiple rows of parallel hole 41b.The hundred of punching blinds filter plate 3b
Hole 41b on leaf hole 31b and punched-plate 4b corresponds to form clean wind passage 9b, and clean wind passage 9b includes air inlet 91b and goes out
Air port 92b；And the sectional area of air outlet 92b of the air inlet 91b sectional area of clean wind passage 9b greater than clean wind passage 9b.
Superposition filter disc partition 2 and bilayer filter plate 2a and left plate 10 and right side plate 15 constitute the mixing wind of a V type
Road 8a and ventilation air port 5a.The mixture self-ventilation air port 5a of air and solid particle enters mixing air duct 8a, then passes through
Clean wind passage 9a carries out gas solid separation, and the solid particles such as sand enter the mixing tail portion air duct 8a with flow inertance, eventually enter into
Sand output line 14.Pure air then passes through the air outlet 92a discharge of clean wind passage 9a.
Superposition filter disc partition 2 and bilayer filter plate 2b and left plate 10 and right side plate 15 constitute the mixing wind of a V type
Road 8b and ventilation air port 5b.The mixture self-ventilation air port 5b of air and solid particle enters mixing air duct 8b, then passes through
Clean wind passage 9b carries out gas solid separation, and the solid particles such as sand enter the mixing tail portion air duct 8b with flow inertance, eventually enter into
Sand output line 14.Pure air then passes through the air outlet 92b discharge of clean wind passage 9b.
The included angle A 1 of the center line of punched-plate 4a and cabinet is 20 °.The included angle A 2 of the center line of punched-plate 4b and cabinet is
20°。
Because the area in clean air outlet channel is less than the area of clean air intake channel, to reduce clean air
The air velocity of exit passageway, and then make the speed of clean air outlet air-flow far below solid particle export direction overdraught
Speed, the air-flow of the relative low speeds of final cleaning air outlet slit can not reverse the air high speed particulate matter of particulate matter export direction
Direction and realize filtering.
Embodiment 3:
The utility model is described further below with reference to Fig. 8, Figure 10:
A kind of gas-solid separator, including cabinet 1.1 two sides of cabinet are equipped with opening；Including for the mixed of air and solid particle
It closes object and enters ventilation air port；And pure air outlet and solid particulate matter collection port.
Cabinet 1 forms one by rivet interlacement respectively by left plate 10 and right side plate 15 and epipleural 12 and lower side panel 13
Outline border.
The double-deck filter plate (2a, 2b) is placed in cabinet 1 and fixes with cabinet 1.Superposition filter disc partition 2 is placed in cabinet 1, can root
According to demand setting 1 to N number of superposition filter disc partition, multiple units will be divided into cabinet, N is natural number.Each unit is equipped with
Mix air duct and ventilation air port and clean wind passage.
Superposition filter disc partition 2 passes through and forms unit first with left plate 10 and right side plate 15 after rivet is connect with epipleural 12；
Unit first is equipped with ventilation air port 5a and mixing air duct 8a.Air duct 8a is mixed by superposition filter disc partition 2 and left plate 10 and right side plate
15 and bilayer filter plate 2a is formed.Mix the channel for the mixture that air duct 8a is air and solid particle.Mix the tail of air duct 8a
Portion connects sand output line 14.
Superposition filter disc partition 2 passes through and forms unit second with left plate 10 and right side plate 15 after rivet is connect with lower side panel 13；
Unit second is equipped with ventilation air port 5b and mixing air duct 8b.Air duct 8b is mixed by superposition filter disc partition 2 and left plate 10 and right side plate
15 and bilayer filter plate 2b is formed.Mix the channel for the mixture that air duct 8b is air and solid particle.Mix the tail of air duct 8b
Portion connects sand output line 14.
The double-deck filter plate 2a is directly superimposed by punching blinds filter plate 3a and punched-plate 4a and is formed by rivet fixation.Blinds filter plate
3a is equipped with multiple rows of parallel equally distributed blinds hole.Punched-plate 4a is equipped with multiple rows of parallel equally distributed hole.Punching hundred
Hole interval on the blinds hole and punched-plate 4a of leaf filter plate 3a is correspondingly formed clean wind passage.
Hole 41a on the blinds hole 31a1 and punched-plate 4a of punching blinds filter plate 3a is correspondingly formed clean wind passage 9a1.Only
Wind channel 9a1 includes air inlet 91a1 and air outlet 92a1；And the air inlet 91a1 sectional area of clean wind passage 9a1 is greater than net wind
The sectional area of the air outlet 92a1 of channel 9a1.
Hole 41a on the blinds hole 31a2 and punched-plate 4a of punching blinds filter plate 3a is correspondingly formed clean wind passage 9a2.Punching
It is logical to be correspondingly formed net wind with the hole 41a on punched-plate 4a by adjacent blinds hole 31a1 and blinds hole 31a2 on the blinds filter plate 3a of hole
Road.
The double-deck filter plate 2b is directly superimposed by punching blinds filter plate 3b and punched-plate 4b and is formed by rivet fixation.Blinds filter plate
3b is equipped with multiple rows of parallel blinds hole.Punched-plate 4b is equipped with multiple rows of parallel hole.The blinds hole of punching blinds filter plate 3b and
Hole interval on punched-plate 4b is correspondingly formed clean wind passage.
Hole 41b on the blinds hole 31b1 and punched-plate 4b of punching blinds filter plate 3b is correspondingly formed clean wind passage 9b1.Only
Wind channel 9b1 includes air inlet 91b1 and air outlet 92b1；And the air inlet 91b1 sectional area of clean wind passage 9b1 is greater than net wind
The sectional area of the air outlet 92b1 of channel 9b1.
Hole 41b on the blinds hole 31b2 and punched-plate 4b of punching blinds filter plate 3b is correspondingly formed clean wind passage 9b2.Punching
It is logical to be correspondingly formed net wind with the hole 41b on punched-plate 4b by adjacent blinds hole 31b1 and blinds hole 31b2 on the blinds filter plate 3b of hole
Road.
Superposition filter disc partition 2 and bilayer filter plate 2a and left plate 10 and right side plate 15 constitute the mixing wind of a V type
Road 8a and ventilation air port 5a.The mixture self-ventilation air port 5a of air and solid particle enters mixing air duct 8a, then passes through
Clean wind passage 9a carries out gas solid separation, and the solid particles such as sand enter the mixing tail portion air duct 8a with flow inertance, eventually enter into
Sand output line 14.Pure air then passes through the air outlet 92a discharge of clean wind passage 9a.
Superposition filter disc partition 2 and bilayer filter plate 2b and left plate 10 and right side plate 15 constitute the mixing wind of a V type
Road 8b and ventilation air port 5b.The mixture self-ventilation air port 5b of air and solid particle enters mixing air duct 8b, then passes through
Clean wind passage 9b carries out gas solid separation, and the solid particles such as sand enter the mixing tail portion air duct 8b with flow inertance, eventually enter into
Sand output line 14.Pure air then passes through the air outlet 92b discharge of clean wind passage 9b.
The included angle A 1 of the center line of punched-plate 4a and cabinet is 20 °.The included angle A 2 of the center line of punched-plate 4b and cabinet is
20°。
Because the area in clean air outlet channel is less than the area of clean air intake channel, to reduce clean air
The air velocity of exit passageway, and then make the speed of clean air outlet air-flow far below solid particle export direction overdraught
Speed, the air-flow of the relative low speeds of final cleaning air outlet slit can not reverse the air high speed particulate matter of particulate matter export direction
Direction and realize filtering.
In above scheme, the double-deck filter plate 2a of gas-solid separator can also be as shown in Figure 11 to 14.Wherein, blinds filter plate
3a is equipped with multiple rows of parallel blinds hole 31a.Punched-plate 4a is equipped with multiple rows of parallel hole 41a.The hundred of punching blinds filter plate 3a
Hole 41a on leaf hole 31a and punched-plate 4a corresponds to form clean wind passage 9a.
Comparative experiments example:
1, the utility model compared with the existing technology (gas-solid separator as shown in Figure 1), the utility model ventilation quantity and
Filter sand effect is greatly improved compared with the prior art.
2, the utility model compared with the existing technology (gas-solid separator as shown in Figure 2), the utility model ventilation quantity and
Filter sand effect is greatly improved compared with the prior art.
3, the utility model is compared compared with the existing technology (gas-solid separator as shown in Figure 2), the utility model processing
Technique is simpler, and high yield rate, process time is short, and at low cost.
Claims (10)
1. a kind of gas-solid separator double-deck filter disc, including punching blinds filter plate, it is characterised in that: it further include punched-plate, it is described
Punching blinds filter plate and the punched-plate cooperate, and the hole on the punched-plate is corresponding with the blinds hole on the punching blinds filter plate
And clean wind passage is formed, the air outlet sectional area of the clean wind passage is less than the air inlet sectional area of the clean wind passage, described
Clean wind passage is air inlet by the punching blinds filter plate side, and the clean wind passage is outlet air by the punched-plate side
Mouthful.
2. a kind of double-deck filter disc of gas-solid separator according to claim 1, it is characterised in that: the punching blinds filter plate
It is directly superimposed with the punched-plate and fixed.
3. a kind of double-deck filter disc of gas-solid separator according to claim 1 or 2, it is characterised in that: on the punched-plate
Hole and the punching blinds filter plate on blinds hole correspond.
4. a kind of double-deck filter disc of gas-solid separator according to claim 1 or 2, it is characterised in that: on the punched-plate
Hole it is corresponding with the blinds hole interval on the punching blinds filter plate.
5. a kind of gas-solid separator, including cabinet, the cabinet two sides are equipped with opening；It is characterized by: the double-deck filter plate is placed in institute
It states in cabinet and is fixed with the cabinet, the cabinet is divided into mixing air duct and two, net wind air duct by the bilayer filter plate
Point；The tail portion in the mixing air duct connects sand output line；Wherein, the double-deck filter plate with punching blinds filter plate and punched-plate and
At the hole on the punched-plate is corresponding with the blinds hole on the punching blinds filter plate and forms clean wind passage, and the net wind is logical
The air inlet sectional area in road is greater than the air outlet sectional area of the clean wind passage.
6. a kind of gas-solid separator according to claim 5, it is characterised in that: the punching blinds filter plate and the punching
Plate is directly superimposed fixation.
7. a kind of gas-solid separator according to claim 5 or 6, it is characterised in that: the punched-plate and the cabinet
The angle of center line is not less than 5 ° and is not more than 30 °.
8. a kind of gas-solid separator according to claim 7, it is characterised in that: hole and the punching on the punched-plate
Blinds hole on blinds filter plate corresponds.
9. a kind of gas-solid separator according to claim 7, it is characterised in that: hole and the punching on the punched-plate
Blinds hole interval on blinds filter plate is corresponding.
10. a kind of gas-solid separator according to claim 7, it is characterised in that: be set to bending on the punched-plate, pass through
The bending is fixed with the cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820357060.2U CN208574346U (en) | 2018-03-15 | 2018-03-15 | A kind of the gas-solid separator double-deck filter disc and gas-solid separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820357060.2U CN208574346U (en) | 2018-03-15 | 2018-03-15 | A kind of the gas-solid separator double-deck filter disc and gas-solid separator |
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| CN208574346U true CN208574346U (en) | 2019-03-05 |
Family
ID=65503192
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| CN201820357060.2U Active CN208574346U (en) | 2018-03-15 | 2018-03-15 | A kind of the gas-solid separator double-deck filter disc and gas-solid separator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019174619A1 (en) * | 2018-03-15 | 2019-09-19 | 无锡斐冠工业设备有限公司 | Double-layer filter for gas-solid separator and gas-solid separator |
| KR102221335B1 (en) * | 2020-09-25 | 2021-03-02 | 한국철도공사 | Inertial Filter for Outdoor Air Purification of Subway Station |
| CN113236452A (en) * | 2021-06-08 | 2021-08-10 | 中车（天津）轨道交通设备有限公司 | Filter screen with flow equalizing function |
| US11406926B2 (en) * | 2020-02-07 | 2022-08-09 | Tunghai University | Air filtration system |
-
2018
- 2018-03-15 CN CN201820357060.2U patent/CN208574346U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019174619A1 (en) * | 2018-03-15 | 2019-09-19 | 无锡斐冠工业设备有限公司 | Double-layer filter for gas-solid separator and gas-solid separator |
| CN110270163A (en) * | 2018-03-15 | 2019-09-24 | 无锡斐冠工业设备有限公司 | A kind of the gas-solid separator double-deck filter disc and gas-solid separator |
| US11406926B2 (en) * | 2020-02-07 | 2022-08-09 | Tunghai University | Air filtration system |
| KR102221335B1 (en) * | 2020-09-25 | 2021-03-02 | 한국철도공사 | Inertial Filter for Outdoor Air Purification of Subway Station |
| CN113236452A (en) * | 2021-06-08 | 2021-08-10 | 中车（天津）轨道交通设备有限公司 | Filter screen with flow equalizing function |
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