CN220360904U - Anti-blocking cloth bag dust remover - Google Patents
Anti-blocking cloth bag dust remover Download PDFInfo
- Publication number
- CN220360904U CN220360904U CN202321634386.2U CN202321634386U CN220360904U CN 220360904 U CN220360904 U CN 220360904U CN 202321634386 U CN202321634386 U CN 202321634386U CN 220360904 U CN220360904 U CN 220360904U
- Authority
- CN
- China
- Prior art keywords
- dust
- inner cavity
- chamber
- outer side
- dust removing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000428 dust Substances 0.000 title claims abstract description 171
- 239000004744 fabric Substances 0.000 title claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract description 34
- 238000000605 extraction Methods 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims description 13
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims 3
- 241001330002 Bambuseae Species 0.000 claims 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 3
- 239000011425 bamboo Substances 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 3
- 229920000742 Cotton Polymers 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model discloses an anti-blocking cloth bag dust remover, which belongs to the technical field of dust removers and comprises an inner barrel, wherein a filter screen is arranged on the outer side of the inner barrel, an extraction chamber is arranged in the inner barrel, a filter chamber is arranged in the inner barrel, a plurality of dust removing bags are arranged at the top of an inner cavity of the filter chamber, the top ends of the dust removing bags are communicated with the inner cavity of the extraction chamber, an outer barrel is arranged on the outer side of the inner barrel, and an outer dust removing mechanism is arranged on the outer barrel. According to the utility model, the dust-containing gas is filtered once through the filter screen, the dust-containing gas is filtered twice by the dust removal bag, the dust removal effect is protected, the first motor drives the spur gear to rotate, the rotating ring, the cleaning rod and the cleaning brush are driven to rotate through the cooperation between the spur gear and the gear tooth ring, the dust on the outer side of the filter screen is cleaned by the cleaning brush, the dust remover is prevented from being blocked, and the practicability is improved.
Description
Technical Field
The utility model relates to the technical field of dust collectors, in particular to an anti-blocking cloth bag dust collector.
Background
The bag type dust collector is a dry dust filtering device, which is suitable for capturing fine, dry and non-fibrous dust, a filter bag is made of woven filter cloth or non-woven felt, dust-containing gas is filtered by utilizing the filtering effect of the fiber fabric, and when the dust-containing gas enters the bag type dust collector, dust with large particles and large specific gravity falls down into a dust hopper due to the action of gravity, the dust is blocked when the gas containing the finer dust passes through the filter material, so that the gas is purified, but the outer side of the cloth bag of the conventional bag type dust collector is easy to be blocked and difficult to clean, thereby influencing the normal operation of the dust collector. Therefore, we propose an anti-blocking cloth bag dust remover.
Disclosure of Invention
The utility model aims to solve the problems in the background art and provides an anti-blocking cloth bag dust remover.
In order to solve the problems, the utility model adopts the following technical scheme:
the utility model provides an anti-blocking type sack cleaner, includes the inner tube, the outside of inner tube is provided with the filter screen, the inside of inner tube is provided with the extraction chamber, the inside of inner tube is provided with the filter chamber, the top of filter chamber inner chamber is provided with a plurality of dust removal bags, the top of dust removal bag is linked together with the inner chamber of extraction chamber, the outside of inner tube is provided with the urceolus, be provided with outer dust removal mechanism on the urceolus, the bottom of urceolus inner chamber is provided with two dust collection boxes, be provided with interior dust removal mechanism on the inner tube, the outside of urceolus is fixed to be cup jointed the intake pipe, the top fixed mounting of inner tube has the aspiration pump, the input of aspiration pump extends to the inner chamber of extraction chamber, the output fixedly connected with outlet duct of aspiration pump.
As a preferred scheme of the utility model, the inner dust removing mechanism comprises a dust collecting box fixedly connected to the top of the inner cylinder, and a sliding rod and a supporting seat fixedly connected to the inner cavity of the filtering chamber, wherein a reciprocating screw rod is rotatably connected between the supporting seat and the top of the inner cavity of the filtering chamber, a driving block is sleeved on the outer side thread of the reciprocating screw rod, a sliding seat is slidably connected to the outer side of the sliding rod, a dust removing box is fixedly connected to the end parts of the sliding seat and the driving block, a plurality of sliding holes are formed in the dust removing box, a dust removing groove is formed in the inner wall of the sliding holes, the dust removing bag is sleeved in the inner cavity of the sliding holes, a plurality of hoses are fixedly sleeved on the top of the dust removing box, the top of each hose extends to the inner cavity of the dust collecting box, a filter cotton is arranged in the inner cavity of the dust collecting box, a sealing door is hinged to the side surface of the dust collecting box, a dust collecting pump is fixedly arranged at the top of the dust collecting box, and the input end of the dust collecting pump extends to the inner cavity of the dust collecting box.
As a preferable scheme of the utility model, the outer dust removing mechanism comprises a rotating base fixedly connected to the top of the inner cavity of the outer cylinder and a first motor fixedly installed at the top of the outer cylinder, the bottom of the rotating base is rotatably connected with a rotating ring, the outer side of the rotating ring is provided with a gear ring, an output shaft of the first motor extends to the inner cavity of the outer cylinder and is fixedly sleeved with a spur gear, the spur gear is meshed with the gear ring, the bottom of the rotating ring is fixedly connected with a plurality of cleaning rods, the side parts of the cleaning rods are provided with cleaning brushes, and the end parts of the cleaning brushes are contacted with the outer side surfaces of the inner cylinder and the filter screen.
As a preferable scheme of the utility model, the dust exhaust valve is fixedly arranged at the bottom of the inner cylinder.
As a preferable scheme of the utility model, the top surface and the bottom surface of the driving block are fixedly connected with elastic cylinders, the end parts of the two elastic cylinders are respectively connected with the top surface of the supporting seat and the top surface of the inner cavity of the filtering chamber, and the elastic cylinders are sleeved on the outer side of the reciprocating screw rod.
As a preferable scheme of the utility model, the inner cavity of the extraction chamber is fixedly provided with a second motor, and an output shaft of the second motor is connected with the top end of the reciprocating screw rod.
As a preferable scheme of the utility model, the inner wall of the sliding hole is attached to the outer side surface of the dust removing bag.
The utility model has the advantages that:
(1) In the utility model, the dust-containing gas is filtered once through the filter screen, the dust-containing gas is filtered twice by the dust removal bag, the dust removal effect is protected, in addition, the first motor drives the spur gear to rotate, the rotating ring, the cleaning rod and the cleaning brush are driven to rotate through the cooperation between the spur gear and the gear tooth ring, and the dust on the outer side of the filter screen is cleaned by the cleaning brush, so that the blockage of the dust remover is avoided.
(2) In the utility model, the dust cleaning tank generates suction force by using the dust suction pump, dust outside the dust bag is collected into the inner cavity of the dust collection box by using the suction force of the dust cleaning tank, in addition, the second motor is used for driving the reciprocating screw rod to rotate, and the dust cleaning box is driven to move up and down by the cooperation between the reciprocating screw rod and the driving block, so that the dust outside the dust bag can be completely cleaned by the suction force of the dust cleaning tank, and the dust collection box has good practicability.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
FIG. 3 is a schematic cross-sectional view of an inner barrel of the present utility model;
FIG. 4 is a schematic view of the dust cleaning box of the present utility model;
FIG. 5 is a schematic cross-sectional view of a dust bin of the present utility model;
FIG. 6 is a schematic view of the structure of the external dust removing mechanism of the present utility model;
fig. 7 is an enlarged schematic view of the utility model at a in fig. 6.
The reference numerals in the figures illustrate:
1. an inner cylinder; 2. an outer cylinder; 3. a dust collection box; 4. a filter screen; 5. an extraction chamber; 6. a filtering chamber; 7. a dust removal bag; 8. an outer dust removing mechanism; 9. an inner dust removing mechanism; 10. a support base; 11. a reciprocating screw rod; 12. a slide bar; 13. a slide; 14. a driving block; 15. a dust cleaning box; 16. a slide hole; 17. a dust removal tank; 18. a hose; 19. a dust collection box; 20. filtering cotton; 21. sealing the door; 22. a dust collection pump; 23. rotating the base; 24. a rotating ring; 25. a wheel ring gear; 26. cleaning a rod; 27. a cleaning brush; 28. a first motor; 29. spur gears; 30. a second motor; 31. an air extracting pump; 32. an air outlet pipe; 33. an air inlet pipe; 34. an elastic cylinder; 35. a dust exhaust valve.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.
In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Examples:
referring to fig. 1-7, an anti-blocking cloth bag dust collector comprises an inner barrel 1, a filter screen 4 is arranged on the outer side of the inner barrel 1, an extraction chamber 5 is arranged in the inner barrel 1, a filter chamber 6 is arranged in the inner barrel 1, a plurality of dust removing bags 7 are arranged at the top of the inner cavity of the filter chamber 6, the top ends of the dust removing bags 7 are communicated with the inner cavity of the extraction chamber 5, an outer barrel 2 is arranged on the outer side of the inner barrel 1, an outer dust removing mechanism 8 is arranged on the outer barrel 2, two dust collecting boxes 3 are arranged at the bottom of the inner cavity of the outer barrel 2, an inner dust removing mechanism 9 is arranged on the inner barrel 1, an air inlet pipe 33 is fixedly sleeved on the outer side of the outer barrel 2, an extraction pump 31 is fixedly arranged at the top of the inner barrel 1, the input end of the extraction pump 31 extends to the inner cavity of the extraction chamber 5, and the output end of the extraction pump 31 is fixedly connected with an air outlet pipe 32.
Specifically, please refer to fig. 1-5, the inner dust removing mechanism 9 includes a dust collecting box 19 fixedly connected to the top of the inner cylinder 1, a slide bar 12 fixedly connected to the inner cavity of the filtering chamber 6, and a supporting seat 10, wherein a reciprocating screw rod 11 is rotatably connected between the supporting seat 10 and the top of the inner cavity of the filtering chamber 6, a driving block 14 is sleeved on the outer side of the reciprocating screw rod 11, a sliding seat 13 is slidably connected to the outer side of the slide bar 12, a dust collecting box 15 is fixedly connected to the ends of the sliding seat 13 and the driving block 14, a plurality of sliding holes 16 are arranged on the dust collecting box 15, a dust collecting groove 17 is arranged on the inner wall of the sliding holes 16, a dust collecting bag 7 is sleeved in the inner cavity of the sliding holes 16, a plurality of hoses 18 are fixedly sleeved on the top of the dust collecting box 15, the top ends of the hoses 18 extend to the inner cavity of the dust collecting box 19, the hoses 18 are fixedly sleeved with the inner cavity of the inner cylinder 1, a filter cotton 20 is arranged in the inner cavity of the dust collecting box 19, a sealing door 21 is hinged to the side of the dust collecting box 19, a dust collecting pump 22 is fixedly mounted on the top of the dust collecting box 19, and the input end of the dust collecting pump 22 extends to the inner cavity of the dust collecting box 19.
In this embodiment, the dust cleaning box 15 is limited by the cooperation between the slide bar 12 and the slide base 13, so that the dust cleaning box 15 can only move along the axial direction of the reciprocating screw 11.
Specifically, referring to fig. 2, 6 and 7, the outer dust removing mechanism 8 includes a rotating base 23 fixedly connected to the top of the inner cavity of the outer cylinder 2 and a first motor 28 fixedly installed at the top of the outer cylinder 2, the bottom of the rotating base 23 is rotatably connected with a rotating ring 24, a gear ring 25 is arranged on the outer side of the rotating ring 24, an output shaft of the first motor 28 extends to the inner cavity of the outer cylinder 2 and is fixedly sleeved with a spur gear 29, the spur gear 29 is meshed with the gear ring 25, a plurality of cleaning rods 26 are fixedly connected to the bottom of the rotating ring 24, cleaning brushes 27 are arranged on the side portions of the cleaning rods 26, and the end portions of the cleaning brushes 27 are contacted with the outer side surfaces of the inner cylinder 1 and the filter screen 4.
In this embodiment, the end of the cleaning brush 27 is used to scrape the outside of the filter screen 4, thereby cleaning the dust on the filter screen 4.
Specifically, referring to fig. 2, a dust discharge valve 35 is fixedly installed at the bottom of the inner cylinder 1.
In this embodiment, the dust in the inner cavity of the filtering chamber 6 is discharged through the dust discharge valve 35.
Specifically, referring to fig. 2 and 3, the top surface and the bottom surface of the driving block 14 are fixedly connected with elastic cylinders 34, the end portions of the two elastic cylinders 34 are respectively connected with the top surface of the supporting seat 10 and the top surface of the inner cavity of the filtering chamber 6, and the elastic cylinders 34 are sleeved on the outer side of the reciprocating screw rod 11.
In this embodiment, the outer side of the reciprocating screw 11 is protected by the elastic tube 34, and dust is prevented from falling on the outer side of the reciprocating screw 11.
Specifically, referring to fig. 3, a second motor 30 is fixedly installed in the inner cavity of the pumping chamber 5, and an output shaft of the second motor 30 is connected with the top end of the reciprocating screw rod 11.
In this embodiment, the second motor 30 is used to drive the reciprocating screw 11 to rotate, and the cooperation between the reciprocating screw 11 and the driving block 14 is used to drive the dust cleaning box 15 to move up and down.
Specifically, referring to fig. 2 and 4, the inner wall of the slide hole 16 is attached to the outer side of the dust bag 7.
In this embodiment, the inner wall of the slide hole 16 is guaranteed to be attached to the outer side of the dust removing bag 7, so that the dust removing groove 17 can only pump air from the outer side of the dust removing bag 7.
Working principle: when the dust collector is used, firstly, the gas to be dedusted is guided into the inner cavity of the outer cylinder 2 from the air inlet pipe 33, dust in the gas is filtered for the first time through the filter screen 4, the filtered gas enters the inner cavity of the filter chamber 6, the sucking pump 31 is started to suck air from the inner cavity of the sucking chamber 5, so that the dust collection bag 7 is sucked from the inner cavity of the dust collection box 7, the gas in the inner cavity of the filter chamber 6 is discharged from the top end of the dust collection box 7, the gas in the sucking chamber 5 is discharged from the air outlet pipe 32, the dust collection bag 7 is utilized to intercept the dust, then the first motor 28 is started to drive the spur gear 29 to rotate, the rotating ring 24 is driven to rotate through the cooperation between the spur gear 29 and the gear tooth ring 25, the cleaning rod 26 and the cleaning brush 27 are driven to rotate through the rotating ring 24, the cleaned dust on the filter screen 4 by the cleaning brush 27, the cleaned dust is collected by the dust collection box 3, and finally the dust collection pump 22 is started from the inner cavity of the dust collection box 19, the inner cavity of the dust collection box 19 is sucked from the dust collection box 15 through the hose 18, the dust collection box 17 is sucked from the outer side of the dust collection box 7, the dust collection box 7 is sucked from the air outlet pipe 32, the dust collection box 19 is driven to intercept the dust collection box 19 on the outer side, the dust collection box 19 is driven to move the dust collection box 19 to the inner cavity through the inner cavity of the dust collection box, and the dust collection box is driven to move the dust collection box 11 to the dust collector 11, and the dust collector 11 is driven to move to the dust collector 11 completely through the reciprocating box, and the dust collector 11 is driven to rotate, and the dust collector to be completely and the dust collector 11.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical solution and the modified concept thereof, within the scope of the present utility model.
Claims (6)
1. The utility model provides an anti-blocking type sack cleaner, includes inner tube (1), its characterized in that: the dust removing device comprises an inner cylinder (1), wherein a filter screen (4) is arranged on the outer side of the inner cylinder (1), an extraction chamber (5) is arranged in the inner cylinder (1), a filter chamber (6) is arranged in the inner cylinder (1), a plurality of dust removing bags (7) are arranged at the top of the inner cavity of the filter chamber (6), the top ends of the dust removing bags (7) are communicated with the inner cavity of the extraction chamber (5), an outer cylinder (2) is arranged on the outer side of the inner cylinder (1), an outer dust removing mechanism (8) is arranged on the outer cylinder (2), two dust collecting boxes (3) are arranged at the bottom of the inner cavity of the outer cylinder (2), an inner dust removing mechanism (9) is arranged on the inner cylinder (1), an air inlet pipe (33) is fixedly sleeved on the outer side of the outer cylinder (2), an air extracting pump (31) is fixedly arranged at the top of the inner cylinder (1), and the input end of the air extracting pump (31) extends to the inner cavity of the extraction chamber (5), and the output end of the air outlet pipe (32) is fixedly connected with the air outlet pipe (32).
The inner dust removing mechanism (9) comprises a dust collecting box (19) fixedly connected to the top of the inner cylinder (1) and a sliding rod (12) and a supporting seat (10) fixedly connected to the inner cavity of the filtering chamber (6), a reciprocating screw rod (11) is rotatably connected between the supporting seat (10) and the top of the inner cavity of the filtering chamber (6), a driving block (14) is sleeved on the outer side thread of the reciprocating screw rod (11), a sliding seat (13) is fixedly connected to the outer side of the sliding rod (12), a dust removing box (15) is fixedly connected to the end parts of the sliding seat (13) and the driving block (14), a plurality of sliding holes (16) are formed in the dust removing box (15), a dust removing groove (17) is formed in the inner wall of the sliding hole (16), a plurality of hoses (18) are fixedly sleeved on the top of the dust removing box (15), the top of each hose (18) extends to the inner cavity of the dust collecting box (19), a dust collecting box (19) is fixedly sleeved on the outer side of the inner cylinder (1), a dust collecting box (19) is provided with a dust collecting pump (21), a dust collecting door (22) is fixedly arranged on the inner wall of the dust collecting box (15), the input end of the dust collection pump (22) extends to the inner cavity of the dust collection box (19).
2. The anti-blocking cloth bag dust remover according to claim 1, wherein: the utility model provides an outer dust removal mechanism (8) including fixed connection at the rotation base (23) at urceolus (2) inner chamber top and fixed mounting first motor (28) at urceolus (2) top, the bottom rotation of rotation base (23) is connected with rotor ring (24), the outside of rotor ring (24) is provided with round ring gear (25), the output shaft of first motor (28) extends to the inner chamber of urceolus (2) and fixed sleeve has spur gear (29), spur gear (29) and tooth ring (25) intermeshing, the bottom fixedly connected with of rotor ring (24) a plurality of cleaning rod (26), the lateral part of cleaning rod (26) is provided with cleaning brush (27), the tip of cleaning brush (27) contacts with the lateral surface of inner tube (1), filter screen (4).
3. The anti-blocking cloth bag dust remover according to claim 1, wherein: the bottom of the inner cylinder (1) is fixedly provided with a dust discharge valve (35).
4. The anti-blocking cloth bag dust remover according to claim 1, wherein: the top surface and the bottom surface of drive piece (14) are all fixedly connected with elasticity section of thick bamboo (34), and two the tip of elasticity section of thick bamboo (34) are connected with the top surface of supporting seat (10) and the top surface of filter chamber (6) inner chamber respectively, elasticity section of thick bamboo (34) cover is established in the outside of reciprocating lead screw (11).
5. The anti-blocking cloth bag dust remover according to claim 1, wherein: the inner cavity of the extraction chamber (5) is fixedly provided with a second motor (30), and an output shaft of the second motor (30) is connected with the top end of the reciprocating screw rod (11).
6. The anti-blocking cloth bag dust remover according to claim 1, wherein: the inner wall of the sliding hole (16) is attached to the outer side surface of the dust removing bag (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321634386.2U CN220360904U (en) | 2023-06-26 | 2023-06-26 | Anti-blocking cloth bag dust remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321634386.2U CN220360904U (en) | 2023-06-26 | 2023-06-26 | Anti-blocking cloth bag dust remover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220360904U true CN220360904U (en) | 2024-01-19 |
Family
ID=89518567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321634386.2U Active CN220360904U (en) | 2023-06-26 | 2023-06-26 | Anti-blocking cloth bag dust remover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220360904U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118179159A (en) * | 2024-05-16 | 2024-06-14 | 四川鸿图实业有限公司 | Back-suction ash-cleaning dust remover |
-
2023
- 2023-06-26 CN CN202321634386.2U patent/CN220360904U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118179159A (en) * | 2024-05-16 | 2024-06-14 | 四川鸿图实业有限公司 | Back-suction ash-cleaning dust remover |
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