CN111167031B - Baffle filtering respirator - Google Patents
Baffle filtering respirator Download PDFInfo
- Publication number
- CN111167031B CN111167031B CN201911379056.1A CN201911379056A CN111167031B CN 111167031 B CN111167031 B CN 111167031B CN 201911379056 A CN201911379056 A CN 201911379056A CN 111167031 B CN111167031 B CN 111167031B
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- Prior art keywords
- plate
- filter screen
- annular
- periphery
- elastic filter
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/10—Respiratory apparatus with filter elements
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
Abstract
The invention discloses a baffle filtering type respirator, which comprises a shell, a closed telescopic pipe, an elastic filtering net, an adjusting component, a partition plate and a baffle ring plate, wherein the shell is provided with a plurality of baffle rings; the baffle ring plates are additionally arranged, the baffle ring plates are in a tapered ring body structure with a small top and a large bottom, the plurality of baffle ring plates are uniformly connected to the outer sides of the periphery of the elastic filter screen from top to bottom, and the air circulation grooves are formed among the baffle ring plates, so that air flow needs to be filtered by the baffles of the baffle ring plates before entering the elastic filter screen, large-particle impurities can flow downwards along the baffle ring plates of the tapered ring bodies after impacting the baffle ring plates, the impact of the large-particle impurities on the elastic filter screen is greatly reduced, the filtering burden of the elastic filter screen is reduced, and the filtering effect is further improved.
Description
Technical Field
The invention relates to a barrier filtering respirator.
Background
The respirator is generally installed on the crushing chamber or the pipeline of rubbing crusher for discharge gas, filter the dust, reduce the dust pollution of external environment, but current respirator generally is at the internally mounted cylindricality filter body of casing, reaches filterable purpose behind the cylindricality filter body through the air current, but the filterable precision can not generally be adjusted to foretell filtration, need adjust different filtration pores according to the impurity particle size of difference, reach the filterable purpose of efficient, it is inconvenient in addition to filter the body and change, influences the operating efficiency.
Disclosure of Invention
Aiming at the defects of the prior art, the invention solves the problems that: the baffle filtering type respirator is good in filtering effect, convenient to disassemble and replace and high in filtering efficiency.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a baffle filtering respirator comprises a shell, a closed telescopic pipe, an elastic filter screen, an adjusting component, a partition plate and a baffle ring plate; an air inlet pipe is arranged at the upper end of the shell; a filter cavity is arranged inside the shell; the partition plate is arranged at the upper end of the inside of the shell; the upper end of the partition plate is provided with an air inlet cavity; the periphery of the partition plate is provided with upper annular air vents; the adjusting component comprises a sliding plate, a guide thread cylinder, a guide thread column, a positioning plate and a lower sealing telescopic pipe; the sliding plate and the positioning plate are respectively arranged in the shell up and down; the sliding plate is positioned below the partition plate; a telescopic cavity is arranged between the partition plate and the sliding plate; the air inlet cavity is communicated with the telescopic cavity through an upper annular air vent of the partition plate; a closed telescopic pipe is arranged in the middle between the partition plate and the sliding plate; the outer sides of the periphery of the sliding plate are arranged on the inner wall of the shell in a vertically sliding mode; the outer sides of the periphery of the positioning plate are fixedly arranged at the lower end in the shell; an elastic filter screen is arranged in the middle between the sliding plate and the positioning plate; the lower sealing telescopic pipe is arranged on the outer side of the periphery of the elastic filter screen and is positioned between the sliding plate and the positioning plate; an annular vent groove is arranged between the lower sealing telescopic pipe and the elastic filter screen; the sliding plate is provided with a lower annular vent hole which is positioned around the upper end of the annular vent groove; the telescopic cavity is communicated with the annular vent groove through a lower annular vent hole on the sliding plate; an annular adjusting groove is arranged between the lower sealing telescopic pipe and the inner wall of the shell; two sides of the annular adjusting groove are respectively provided with a guide thread cylinder and a guide thread column; the upper end of the guide threaded cylinder is arranged on the lower end surface of the sliding plate, and the lower end of the guide threaded column is arranged on the upper end surface of the positioning plate; the upper end of the guide threaded column is in threaded connection with the inner part of the lower end of the guide threaded cylinder; the lower end of the guide threaded column is rotationally clamped on the upper end surface of the positioning plate; an exhaust pipe is arranged in the middle of the lower end of the positioning plate; the upper end of the exhaust pipe is communicated with the interior of the elastic filter screen, and the lower end of the exhaust pipe extends to the outer side of the lower end of the shell; the upper end of the elastic filter screen is provided with a sealing plate, and the lower end of the elastic filter screen is provided with a porous plate; the upper end of the sealing plate and the two sides of the lower end of the porous plate are respectively provided with an inserting tooth; inserting grooves are formed in both sides of the lower end of the sliding plate and both sides of the upper end of the positioning plate; the elastic filter screen is respectively inserted into the insertion grooves of the sliding plate and the positioning plate through the insertion teeth on the two sides of the closing plate at the upper end and the perforated plate at the lower end; the periphery of the lower end of the porous plate is hermetically connected with the upper end surface of the exhaust pipe through a sealing ring; the baffle ring plate is of a conical ring structure with a small upper part and a big lower part; the outer sides of the periphery of the elastic filter screen are uniformly connected with a plurality of baffle ring plates from top to bottom; and an air-communicating ring groove is arranged between the baffle ring plates.
Furthermore, the upper end surface of the partition plate is of an upward-bulging arc-shaped structure.
Furthermore, two sides of the annular adjusting groove are provided with adjusting gaps.
Furthermore, the elastic filter screen is of an annular cylinder structure.
Furthermore, sliding grooves are formed in the periphery of the inner wall of the shell; the outer sides of the periphery of the sliding plate are in sliding contact with the sliding groove of the shell.
Furthermore, the closed extension tube is made of a corrugated tube material.
Further, the device also comprises an upper sealing telescopic pipe; the upper sealing telescopic pipe is arranged at the outer side of the periphery of the closed telescopic pipe; the upper end of the upper sealing telescopic pipe is connected to the periphery of the lower end face of the partition plate, and the upper end of the upper sealing telescopic pipe is positioned on the outer side of the periphery of the upper annular air vent; the lower end of the upper sealing telescopic pipe is connected to the periphery of the upper end face of the sliding plate, and the lower end of the upper sealing telescopic pipe is positioned on the outer side of the periphery of the lower annular air vent.
Furthermore, an annular discharge groove is formed in the positioning plate; the annular discharge groove is positioned below the annular vent groove between the lower sealing telescopic pipe and the elastic filter screen; the annular discharge groove is provided with an opening and closing ring body.
Furthermore, the elastic filter screen is spandex filter screen yarn.
The invention has the advantages of
1. The baffle ring plates are additionally arranged, the baffle ring plates are in a tapered ring body structure with a small top and a large bottom, the plurality of baffle ring plates are uniformly connected to the outer sides of the periphery of the elastic filter screen from top to bottom, and the air circulation grooves are formed among the baffle ring plates, so that air flow needs to be filtered by the baffles of the baffle ring plates before entering the elastic filter screen, large-particle impurities can flow downwards along the baffle ring plates of the tapered ring bodies after impacting the baffle ring plates, the impact of the large-particle impurities on the elastic filter screen is greatly reduced, the filtering burden of the elastic filter screen is reduced, and the filtering effect is further improved.
2. The elastic filter screen is respectively inserted into the insertion grooves of the sliding plate and the positioning plate through the insertion teeth on the two sides of the sealing plate at the upper end and the perforated plate at the lower end, so that a connecting structure in sliding and clamping connection is formed, and the elastic filter screen is very fast and convenient to mount and dismount.
3. The structure of the traditional respirator is changed, the guide threaded cylinder is rotated on the guide threaded cylinder through the guide threaded column, so that the guide threaded cylinder is driven to stretch and move up and down, the sliding plate is driven to move up and down, the elastic filter screen is driven to stretch up and down through the sliding plate, and when the upper end of the elastic filter screen is driven to move up through the sliding plate, the elastic filter screen is stretched, so that the pores on the elastic filter screen are enlarged, the air flow is accelerated, and the diameter of filterable particles is increased; when the upper end of the elastic filter screen is moved downwards by the sliding plate, the elastic filter screen can be compressed, so that the pores on the elastic filter screen are reduced, the flow rate of air flow is reduced, the diameter of filterable particles is reduced, the adjustment of adaptation can be carried out, and the operation efficiency is higher.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged schematic view of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 2, a barrier filtering respirator comprises a shell 1, a closed extension tube 2, an elastic filter screen 6, an adjusting component 4, a partition plate 3 and a barrier ring plate 8; an air inlet pipe 11 is arranged at the upper end of the shell 1; a filter cavity is arranged in the shell 1; the partition plate 3 is arranged at the upper end of the interior of the shell 1; the upper end of the partition plate 3 is provided with an air inlet cavity 12; the periphery of the partition plate 3 is provided with an upper annular vent 31; the adjusting component 4 comprises a sliding plate 41, a guide threaded cylinder 44, a guide threaded column 45, a positioning plate 43 and a lower sealing telescopic pipe 42; the sliding plate 41 and the positioning plate 43 are respectively arranged in the shell 1 from top to bottom; the sliding plate 41 is positioned below the partition plate 3; a telescopic cavity 13 is arranged between the partition plate 41 and the sliding plate; the air inlet cavity 12 is communicated with the telescopic cavity 13 through an upper annular vent 31 of the partition plate 3; a closed extension tube 2 is arranged in the middle between the partition plate 3 and the sliding plate 41; the outer sides of the periphery of the sliding plate 41 are arranged on the inner wall of the shell 1 in a vertically sliding mode; the outer sides of the periphery of the positioning plate 43 are fixedly arranged at the lower end in the shell 1; the elastic filter screen 6 is arranged in the middle between the sliding plate 41 and the positioning plate 43; the lower sealing telescopic pipe 42 is arranged on the outer side of the periphery of the elastic filter screen 6 and is positioned between the sliding plate 41 and the positioning plate 43; an annular vent groove 14 is arranged between the lower sealing extension tube 42 and the elastic filter screen 6; the sliding plate 41 is provided with a lower annular vent 411, and the lower annular vent 411 is positioned around the upper end of the annular vent groove 14; the telescopic cavity 13 is communicated with the annular vent groove 14 through a lower annular vent hole 411 on the sliding plate 41; an annular adjusting groove 15 is arranged between the lower sealing telescopic pipe 42 and the inner wall of the shell 1; a guide thread cylinder 44 and a guide thread column 45 are respectively arranged on two sides of the annular adjusting groove 15; the upper end of the guide screw cylinder 44 is arranged on the lower end surface of the sliding plate 41, and the lower end of the guide screw column 45 is arranged on the upper end surface of the positioning plate 43; the upper end of the guide thread column 45 is in threaded connection with the inner part of the lower end of the guide thread cylinder 44; the lower end of the guide threaded column 45 is rotationally clamped on the upper end surface of the positioning plate 43; the middle of the lower end of the positioning plate 43 is provided with an exhaust pipe 16; the upper end of the exhaust pipe 16 is communicated with the interior of the elastic filter screen 6, and the lower end of the exhaust pipe 16 extends to the outer side of the lower end of the shell 1. The upper end of the elastic filter screen 6 is provided with a closing plate 61, and the lower end is provided with a perforated plate 62; the upper end of the closing plate 61 and the two sides of the lower end of the porous plate 62 are respectively provided with an inserting tooth 63; the two sides of the lower end of the sliding plate 41 and the two sides of the upper end of the positioning plate 43 are both provided with inserting grooves 7; the elastic filter screen 6 is respectively inserted into the insertion grooves 7 of the sliding plate 41 and the positioning plate 43 through the insertion teeth 63 on the two sides of the closing plate 61 at the upper end and the perforated plate 62 at the lower end; the periphery of the lower end of the porous plate 62 is hermetically connected with the upper end surface of the exhaust pipe 16 by a sealing ring 621. The baffle ring plate 8 is in a conical ring structure with a small upper part and a big lower part; the outer sides of the periphery of the elastic filter screen 6 are uniformly connected with a plurality of baffle ring plates 8 from top to bottom; and an air-through ring groove 81 is arranged between the baffle ring plates 8. The lower part of the positioning plate 43 forms a material collecting cavity with the shell and the outer side of the periphery of the exhaust pipe 16.
As shown in fig. 1 to 2, it is further preferable that the upper end surface of the partition plate 3 has an upwardly-bulged arc structure. Further, two sides of the annular adjusting groove 15 are provided with adjusting notches 151. Furthermore, the elastic filter screen 6 is in an annular cylinder structure. Furthermore, sliding grooves 17 are formed in the periphery of the inner wall of the shell 1; the outer sides of the four sides of the slide plate 41 are in slide contact with the slide groove 17 of the housing 1. Further, the closed extension tube 2 is made of a corrugated tube material. Further, the device also comprises an upper sealing telescopic pipe 5; the upper sealing telescopic pipe 5 is arranged at the outer side of the periphery of the closed telescopic pipe 2; the upper end of the upper sealing telescopic pipe 5 is connected to the periphery of the lower end face of the partition plate 3, and the upper end of the upper sealing telescopic pipe 5 is positioned on the outer side of the periphery of the upper annular vent 31; the lower end of the upper sealing telescopic pipe 5 is connected to the periphery of the upper end face of the sliding plate 41, and the lower end of the upper sealing telescopic pipe 5 is positioned at the outer side of the periphery of the lower annular air vent 411. Further, an annular discharge groove 431 is formed in the positioning plate 43; the annular discharge groove 431 is positioned below the annular vent groove 14 between the lower sealing extension tube 42 and the elastic filter screen 6; an opening and closing ring body 431 is arranged on the annular discharge groove 431, and the opening and closing ring body 431 can be made of rubber materials. Furthermore, the elastic filter screen 6 is spandex filter screen yarn.
The air flow path of the invention is as follows: the air inlet pipe 11, the air inlet cavity 12, the upper annular air vent 31, the telescopic cavity 13, the lower annular air vent 411, the annular air vent groove 14, the elastic filter screen 6 and the exhaust pipe 16.
The baffle ring plate 8 is additionally arranged, the baffle ring plate 8 is of a conical ring body structure with a small top and a large bottom, the plurality of baffle ring plates 8 are uniformly connected to the outer side of the periphery of the elastic filter screen 6 from top to bottom, and the air through ring grooves 81 are formed between the baffle ring plates 8, so that air flow needs to be filtered by the baffles of the baffle ring plates 8 before entering the elastic filter screen 6, large-particle impurities can flow downwards along the baffle ring plates 8 of the conical ring body after impacting the baffle ring plates 8, the impact of the large-particle impurities on the elastic filter screen 6 is greatly reduced, the filtering burden of the elastic filter screen 6 is reduced, and the filtering effect is further improved; the elastic filter screen 6 is respectively inserted into the insertion grooves 7 of the sliding plate 41 and the positioning plate 43 through the insertion teeth 63 at two sides of the closing plate 61 at the upper end and the perforated plate 62 at the lower end, so that a connection structure of sliding clamping is formed, and the elastic filter screen 6 is very fast and convenient to mount and dismount; the structure of the traditional respirator is changed, the guide threaded cylinder 44 is driven to stretch and move up and down by the rotation of the guide threaded column 45 on the guide threaded cylinder 44, so that the sliding plate 41 is driven to move up and down, the elastic filter screen 6 is driven to stretch up and down by the sliding plate 41, and when the sliding plate 41 drives the upper end of the elastic filter screen 6 to move up, the elastic filter screen 6 is stretched, so that the pores on the elastic filter screen 6 are enlarged, the flow of air flow is accelerated, and the diameter of filterable particles is increased; when the sliding plate 41 drives the upper end of the elastic filter screen 6 to move downwards, the elastic filter screen 6 is compressed, so that the pores on the elastic filter screen 6 become smaller, the flow rate of the air flow is reduced, the diameter of the filterable particles is reduced, the adjustment can be performed adaptively, and the operation efficiency is higher.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A baffle filtering respirator is characterized by comprising a shell, a closed telescopic pipe, an elastic filter screen, an adjusting assembly, a partition plate and a baffle ring plate; an air inlet pipe is arranged at the upper end of the shell; a filter cavity is arranged inside the shell; the partition plate is arranged at the upper end of the inside of the shell; the upper end of the partition plate is provided with an air inlet cavity; the periphery of the partition plate is provided with upper annular air vents; the adjusting component comprises a sliding plate, a guide thread cylinder, a guide thread column, a positioning plate and a lower sealing telescopic pipe; the sliding plate and the positioning plate are respectively arranged in the shell up and down; the sliding plate is positioned below the partition plate; a telescopic cavity is arranged between the partition plate and the sliding plate; the air inlet cavity is communicated with the telescopic cavity through an upper annular air vent of the partition plate; a closed telescopic pipe is arranged in the middle between the partition plate and the sliding plate; the outer sides of the periphery of the sliding plate are arranged on the inner wall of the shell in a vertically sliding mode; the outer sides of the periphery of the positioning plate are fixedly arranged at the lower end in the shell; an elastic filter screen is arranged in the middle between the sliding plate and the positioning plate; the lower sealing telescopic pipe is arranged on the outer side of the periphery of the elastic filter screen and is positioned between the sliding plate and the positioning plate; an annular vent groove is arranged between the lower sealing telescopic pipe and the elastic filter screen; the sliding plate is provided with a lower annular vent hole which is positioned around the upper end of the annular vent groove; the telescopic cavity is communicated with the annular vent groove through a lower annular vent hole on the sliding plate; an annular adjusting groove is arranged between the lower sealing telescopic pipe and the inner wall of the shell; two sides of the annular adjusting groove are respectively provided with a guide thread cylinder and a guide thread column; the upper end of the guide threaded cylinder is arranged on the lower end surface of the sliding plate, and the lower end of the guide threaded column is arranged on the upper end surface of the positioning plate; the upper end of the guide threaded column is in threaded connection with the inner part of the lower end of the guide threaded cylinder; the lower end of the guide threaded column is rotationally clamped on the upper end surface of the positioning plate; an exhaust pipe is arranged in the middle of the lower end of the positioning plate; the upper end of the exhaust pipe is communicated with the interior of the elastic filter screen, and the lower end of the exhaust pipe extends to the outer side of the lower end of the shell; the upper end of the elastic filter screen is provided with a sealing plate, and the lower end of the elastic filter screen is provided with a porous plate; the upper end of the sealing plate and the two sides of the lower end of the porous plate are respectively provided with an inserting tooth; inserting grooves are formed in both sides of the lower end of the sliding plate and both sides of the upper end of the positioning plate; the elastic filter screen is respectively inserted into the insertion grooves of the sliding plate and the positioning plate through the insertion teeth on the two sides of the closing plate at the upper end and the perforated plate at the lower end; the periphery of the lower end of the porous plate is hermetically connected with the upper end surface of the exhaust pipe through a sealing ring; the baffle ring plate is of a conical ring structure with a small upper part and a big lower part; the outer sides of the periphery of the elastic filter screen are uniformly connected with a plurality of baffle ring plates from top to bottom; an air-through ring groove is arranged between the baffle ring plates; the device also comprises an upper sealing telescopic pipe; the upper sealing telescopic pipe is arranged at the outer side of the periphery of the closed telescopic pipe; the upper end of the upper sealing telescopic pipe is connected to the periphery of the lower end face of the partition plate, and the upper end of the upper sealing telescopic pipe is positioned on the outer side of the periphery of the upper annular air vent; the lower end of the upper sealing telescopic pipe is connected to the periphery of the upper end face of the sliding plate, and the lower end of the upper sealing telescopic pipe is positioned on the outer side of the periphery of the lower annular air vent.
2. The barrier filtering respirator of claim 1, wherein the upper end surface of the divider panel is an upwardly crowned arcuate structure.
3. The barrier filtering respirator of claim 1 wherein the annular adjustment slot is provided with adjustment notches on both sides.
4. The barrier filtering respirator of claim 1, wherein the resilient filter web is an annular cylinder structure.
5. The barrier filtering respirator of claim 1 wherein the inner wall of the housing has a sliding channel around it; the outer sides of the periphery of the sliding plate are in sliding contact with the sliding groove of the shell.
6. The barrier filtering respirator of claim 1 wherein the closed bellows is made of a bellows material.
7. The barrier filtering respirator of claim 1, wherein the positioning plate is provided with an annular discharge groove; the annular discharge groove is positioned below the annular vent groove between the lower sealing telescopic pipe and the elastic filter screen; the annular discharge groove is provided with an opening and closing ring body.
8. The barrier filtering respirator of claim 1 wherein the elastic filter web is a spandex filter screen gauze.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911379056.1A CN111167031B (en) | 2019-12-27 | 2019-12-27 | Baffle filtering respirator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911379056.1A CN111167031B (en) | 2019-12-27 | 2019-12-27 | Baffle filtering respirator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111167031A CN111167031A (en) | 2020-05-19 |
| CN111167031B true CN111167031B (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911379056.1A Active CN111167031B (en) | 2019-12-27 | 2019-12-27 | Baffle filtering respirator |
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| CN (1) | CN111167031B (en) |
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| CN105999889A (en) * | 2016-06-29 | 2016-10-12 | 合肥天翔环境工程有限公司 | Flow guide device of cloth bag type dust remover |
| CN206121377U (en) * | 2016-10-26 | 2017-04-26 | 粉瑞得制药设备（上海）有限公司 | Respirator |
| CN109579521A (en) * | 2018-11-22 | 2019-04-05 | 东台市高科技术创业园有限公司 | A kind of plug-in type metal melting appartus |
| CN109579520A (en) * | 2018-11-22 | 2019-04-05 | 东台市高科技术创业园有限公司 | A kind of overflow adjustable type metal melting appartus |
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| GB864148A (en) * | 1958-07-16 | 1961-03-29 | Davco Proprietary Ltd | An improved pressure filter |
| JP2003293729A (en) * | 2002-04-02 | 2003-10-15 | Purearth Inc | Carbon particle reducing device |
| JP3906185B2 (en) * | 2003-06-19 | 2007-04-18 | 多摩エンジニアリング株式会社 | Structure support equipment |
| CN106731203B (en) * | 2016-12-27 | 2018-09-07 | 李允杰 | A kind of configurating filtered device of solid-liquid reagent |
| CN108355810B (en) * | 2018-05-14 | 2020-09-15 | 贵州大学 | Mechanical automation is with reducing mechanism convenient to screening |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2340972A1 (en) * | 1973-08-13 | 1975-02-27 | Happle & Sohn Kg Maschf | Removing dust from tubular filter bag - by axially moving annular suction head fitting inside bag to prevent dust dispersal |
| CN201912864U (en) * | 2010-12-22 | 2011-08-03 | 佳木斯大学 | Device for filtering dust-containing flue gas and collecting dust particles |
| CN203162496U (en) * | 2013-03-14 | 2013-08-28 | 温州市博凡实业有限公司 | Condensation nozzle for fog lubrication device |
| CN203750706U (en) * | 2014-04-16 | 2014-08-06 | 河北科技大学 | Quick separating dehydrator |
| CN105999889A (en) * | 2016-06-29 | 2016-10-12 | 合肥天翔环境工程有限公司 | Flow guide device of cloth bag type dust remover |
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| CN111167031A (en) | 2020-05-19 |
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