CN104923416B - Dust removal device for heat pump grain drying system - Google Patents
Dust removal device for heat pump grain drying system Download PDFInfo
- Publication number
- CN104923416B CN104923416B CN201510307282.4A CN201510307282A CN104923416B CN 104923416 B CN104923416 B CN 104923416B CN 201510307282 A CN201510307282 A CN 201510307282A CN 104923416 B CN104923416 B CN 104923416B
- Authority
- CN
- China
- Prior art keywords
- air duct
- main air
- dust
- heat pump
- wind
- 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.)
- Active
Links
- 239000000428 dust Substances 0.000 title claims abstract description 72
- 238000001035 drying Methods 0.000 title claims abstract description 31
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 238000010410 dusting Methods 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 241000237858 Gastropoda Species 0.000 claims description 4
- 239000012141 concentrate Substances 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification 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
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/85—Food storage or conservation, e.g. cooling or drying
Landscapes
- Cyclones (AREA)
Abstract
The invention relates to a dust removal device for a heat pump grain drying system, which comprises a cylindrical main air duct and a cyclone dust collector, wherein the cylindrical main air duct is connected with the cyclone dust collector; an upper volute is arranged at the top of the main air duct, an oblique flow fan is connected below the upper volute, a lower volute is arranged below the oblique flow fan, and an air outlet pipe is connected below the lower volute through an air outlet pipe joint; and a gas outlet at the top of the cyclone dust collector is connected with the upper volute, and a gas inlet pipe of the cyclone dust collector is connected on the side wall of the lower volute through a pipeline. The dust removal device provided by the invention concentrates the grain impurities in the main air duct to the near wall surface of the lower volute through the rotating centrifugal airflow action of the oblique flow fan; then the grains are separated and collected by a cyclone dust collector, so that the aim of removing dust of the grains is fulfilled; meanwhile, the main air volume of the main air duct enters the heat pump system through the secondary dust removal screen, so that the dust removal and the efficient utilization of the circulating air of the heat pump grain drying system are realized.
Description
Technical field
The invention belongs to gas-solid separation equipment field, and in particular to a kind of gas cleaning plant of drying grain.
Background technology
Extreme degradation and an urgent demand of energy-saving and emission-reduction with environment situation, heat pump drying technology have become replacement
The inexorable trend of traditional fire coal drying system.The outstanding advantage of heat pump is energy saving and the no pollution discharge of circulated air；
But the clean circulated air condition of heat pump grain heat-drying requirement, so the circulated air dedusting of heat pump grain drying turns into important
Hold.At present, deduster mainly includes electric precipitation and bag-type dust, its role is to remove the particulate matter in air；Both are removed
Dirt mode differs from one another, and can reach the purpose for removing air pollution particulate matter.But the use environment of electric precipitation requirement is harsh,
Power supply and complex structure；Sack cleaner service life is short, and windage is big；So electric precipitation and sack cleaner are inadaptable
In heat pump cycle wind effective utilization system.
It is conventional separation means to be separated solid particle in fluid using centrifugal force.By the dust-laden wind of drying grain
Centrifugal separating device is sent directly into, it is necessary to separator is distinguished and admirable with dust-laden flux matched.But heat pump grain heat-drying is to the energy of circulated air
The matching feature requirement for consuming clean level of becoming estranged is very high, and general dirt pocket does not reach heat pump grain drying circulated air dedusting
It is required that, so more effective technique scheme must be proposed to the purification of heat pump cycle wind.
The content of the invention
(1) technical problem to be solved
The purpose of the present invention is directed to the weak point of this area presence, there is provided a kind of for heat pump grain drying system
Dust arrester.
Application it is another object of the present invention to propose the dust arrester.
(2) technical scheme
The purpose of the present invention is achieved through the following technical solutions：
A kind of dust arrester for heat pump grain drying system, the heat pump grain drying system includes heat pump and drying
The hothouse of grain, the dust-laden wind pipeline of hothouse is connected with dust arrester；
The dust arrester includes the main air duct and cyclone dust collectors of cylinder；
The main air duct top is provided with upper volute, and the upper volute lower section connection diagonal flow fan connects below diagonal flow fan
Lower spiral case is connect, the lower spiral case lower section connects discharge pipe by air-out pipe joint；
The cyclone dust collectors top gas outlet connection upper volute, the air inlet pipe of cyclone dust collectors is connected by pipeline
It is connected on the side wall of lower spiral case, lower spiral case is connected side-walls and is provided with connector with cyclone dust collectors, its connector size and whirlwind
Deduster air inlet pipe size is identical,
Further, in the main air duct, dedusting sieve is provided with below diagonal flow fan, the dedusting sieve is cone shape
Shape, raised one upwardly, and the outer rim of dedusting sieve is bolted with the lower end of lower volute outer wall.
Wherein, the cyclone dust collectors top gas outlet connects the upper volute by de-dusting cycle airduct, and dedusting is followed
Dedusting wind regulating valve is provided with bostle pipe.
Inventor is groped and is compared repeatedly to the outlet of cyclone dust collectors top gas with the link position of upper volute, is
Influence of the dedusting wind of upper volute to main air duct is reduced, proposes to be preferably designed as：The cyclone dust collectors top gas go out
Mouth is located at 2/5 to 3/5 place of the upper volute height with the upper volute link position (in terms of link position central point).
It is further preferred that the main air duct that is sufficiently separated in order to realize solid impurity, the height of lower spiral case is 300mm；On
The height of spiral case is 500mm.
It is highly preferred that cyclone dust collectors top gas outlet connection upper volute air inlet (in terms of air inlet central point) away from
250mm is respectively with a distance from upper and lower port.
Wherein, it is provided with the support for fixing main air duct on the ground on the outer wall of the main air duct.
Wherein, main wind regulating valve is provided with the discharge pipe.
Wherein, the air inlet pipe of the cyclone dust collectors is connected on the side wall of lower spiral case by pipeline.Because dedusting air quantity
The too high effective utilization that can reduce main wind, the too low dedusting for being unfavorable for main wind of dedusting air quantity, so air inlet pipe diameter and main air duct
The ratio of diameter is 1:9-11.
Using the method that dust arrester proposed by the present invention is dried to the recyclegas of heat pump grain drying system, tool
Body is：
Dust-laden air temperature into main air duct is 30-60 DEG C, and the flow velocity that dust-laden wind enters main air duct is 4~6m/s, is passed through
In tangential flowing after diagonal flow fan, make the near wall area of spiral case under the most solid impurities in dust-laden wind, and by lower snail
Shell side wall enters cyclone dust collectors, and remaining a small amount of impurity screens out dirt by dedusting；Main wind after dedusting continues to move downward, and leads to
Cross discharge pipe and return to heat pump.
Inventor gropes and optimizes through practice, proposes the matching relationship of dust-laden wind and diagonal flow fan model, specially：If containing
The flow that dirt wind enters main air duct is 11000~13000m3/ h, diagonal flow fan (3) power of configuration is 7.5kW；If dust-laden wind
Flow into main air duct is 7000~11000m3/ h, diagonal flow fan (3) power of configuration is 5.5kW.
(3) beneficial effect
The dust arrester of heat pump grain drying system proposed by the present invention, is made by the rotating centrifugal air-flow of diagonal flow fan
With the grain miscellany in main air duct is focused on into lower spiral case near wall；The debris of lower spiral case near wall are by the cyclone dust removal
Device is separated and collected, and reaches grain dedusting purpose；Meanwhile, the main air quantity of main air duct is sieved by final dusting and enters heat pump system
System, so as to realize the dedusting and efficiently utilization of heat pump grain drying system circulation wind, and to realize the energy-saving and emission-reduction of grain drying
Technical guarantee is provided.
Brief description of the drawings
Fig. 1 is the dust arrester schematic diagram of heat pump grain drying system of the invention；
Numbering and component names corresponding relation are in figure：1 main wind air inlet, 2 upper volutes, 3 diagonal flow fans, 4 dedustings sieve, 5
Lower spiral case, 6 air-out pipe joints, 7 main wind regulating valves, 8 main wind air outlets, 9 main air ducts, 10 cyclone dust collectors air inlets, 11 supports,
12 dust mouths, 13 cyclone dust collectors, 14 hothouses, 15 circulation air paths, 16 de-dusting cycle airducts, 17 dedusting wind regulating valves, 18 heat
Pumping system.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the invention is described in further detail.
Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
Embodiment 1
See Fig. 1, a kind of dust arrester for heat pump grain drying system, the heat pump grain drying system includes heat pump
With the hothouse 14 of drying grain, the dust-laden wind pipeline of hothouse 14 is connected with dust arrester.The dust arrester includes cylinder
Main air duct 9 and cyclone dust collectors 13.
The top of main air duct 9 is provided with upper volute 2, and it is main wind air inlet 1 that the axially open of the upper volute 2 is；Under upper volute 2
Side's connection diagonal flow fan 3, the lower spiral case 5 of the lower section of diagonal flow fan 3 connection, it is main wind air outlet 8 that the axially open of the lower spiral case is；Under
The lower section of spiral case 5 connects discharge pipe by air-out pipe joint 6, and main wind regulating valve 7 is provided with discharge pipe.
In main air duct 9, the dedusting sieve 4 of cone shape is provided with below diagonal flow fan 3, raised one upwardly, removes
The outer rim of dirt sieve 4 is bolted with the lower end of the lower outer wall of spiral case 5.It is provided with the outer wall of main air duct 9 and fixes main air duct
Support 11 on the ground.
The outlet of the top gas of cyclone dust collectors 13 connects the upper volute 2, de-dusting cycle wind by de-dusting cycle airduct 16
Dedusting wind regulating valve 17 is provided with pipe 16.Upper volute 500mm high, in the air inlet of the connection upper volute 2 of de-dusting cycle airduct 16
Heart line is highly located positioned at upper volute 250mm.The air inlet pipe of cyclone dust collectors 13 is connected on the side wall of lower spiral case 5 by pipeline,
The ratio of air inlet pipe diameter and the diameter of main air duct 9 is 1:10.Lower spiral case 5 is connected side-walls and is provided with connection with cyclone dust collectors 13
Mouthful, its connector size is identical with cyclone dust collectors air inlet pipe size.
Using the method that the dust arrester of the present embodiment is dried to the recyclegas of heat pump grain drying system, specifically
For：
Dust-laden air temperature into main air duct is 30-60 DEG C, and the flow that dust-laden wind enters main air duct is 12000m3/ h, warp
Diagonal flow fan 3 (power 7.5kW) is crossed afterwards in tangential flowing, the most solid impurities in dust-laden wind is reached lower spiral case 5
Near wall area, and cyclone dust collectors 13 are entered by lower snail shell side wall, remaining a small amount of impurity sieves 4 by final dusting by dedusting；
Wind after dedusting continues to move downward, and heat pump is returned to by discharge pipe.
The flow velocity that dust-laden wind enters main air duct is 5m/s, and 97% or so is reached by efficiency of dust collection after dust arrester.
Embodiment 2
The present embodiment is used for the dust arrester of heat pump grain drying system, and structure is with embodiment 1.Difference is：Cause
The heat pump grain drying system dimension for being connected is smaller, and in the present embodiment dust arrester, diagonal flow fan power is 5.5KW.
Using the method that the dust arrester of the present embodiment is dried to the recyclegas of heat pump grain drying system, specifically
For：
Dust-laden air temperature into main air duct is 40 DEG C, and the flow that dust-laden wind enters main air duct is 10500m3/ h, by oblique
In tangential flowing after flow fan, the most solid impurities in dust-laden wind are made to reach the near wall area of lower spiral case 5, and under passing through
Snail shell side wall enters cyclone dust collectors 13, and remaining a small amount of impurity sieves 4 by final dusting by dedusting；Wind after dedusting continue to
Lower motion, heat pump is returned to by discharge pipe.
The flow velocity that dust-laden wind enters main air duct is 4.5m/s, and 97% or so is reached by efficiency of dust collection after dust arrester.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although reference
Preferred embodiment has been described in detail to the present invention, it will be appreciated by those skilled in the art that can be to technical side of the invention
Case is modified or equivalent, and without deviating from the spirit and scope of technical solution of the present invention, it should cover in this hair
In the middle of bright right.
Claims (9)
1. a kind of dust arrester for heat pump grain drying system, the heat pump grain drying system includes heat pump and dries grain
The hothouse of food, the dust-laden wind pipeline of hothouse is connected with dust arrester；Characterized in that,
The dust arrester includes the main air duct of cylinder（9）And cyclone dust collectors（13）；
The main air duct（9）Top is provided with upper volute（2）, the upper volute（2）Lower section connects diagonal flow fan（3）, oblique flow wind
Machine（3）The lower spiral case of lower section connection（5）, the lower spiral case（5）Lower section passes through air-out pipe joint（6）Connection discharge pipe；
The cyclone dust collectors（13）The top gas outlet connection upper volute（2）, cyclone dust collectors（13）Air inlet pipe lead to
Piping is connected to lower spiral case（5）Side wall on, lower spiral case（5）With cyclone dust collectors（13）Connection side-walls are provided with connector,
Its connector size is identical with cyclone dust collectors air inlet pipe size；
Wherein, the main air duct（9）It is interior, in diagonal flow fan（3）Lower section is provided with dedusting sieve（4）, the dedusting sieve（4）It is circular cone
Shape, raised one upwardly, dedusting sieve（4）Outer rim and lower spiral case（5）The lower end of outer wall is bolted.
2. dust arrester according to claim 1, it is characterised in that the cyclone dust collectors（13）Top gas outlet is logical
Cross de-dusting cycle airduct（16）Connect the upper volute（2）, de-dusting cycle airduct（16）On be provided with dedusting wind regulating valve（17）.
3. dust arrester according to claim 1 and 2, it is characterised in that the cyclone dust collectors（13）Top gas go out
Mouth and the upper volute（2）Link position is located at the upper volute（2）2/5 to 3/5 place of height.
4. dust arrester according to claim 1 and 2, it is characterised in that the lower spiral case（5）Height be 300mm；On
Spiral case（2）Height be 500mm.
5. dust arrester according to claim 1, it is characterised in that the main air duct（9）Outer wall on be provided with master
The support that air channel fixes on the ground.
6. dust arrester according to claim 1, it is characterised in that main wind regulating valve is provided with the discharge pipe（7）.
7. dust arrester according to claim 1, it is characterised in that the cyclone dust collectors（13）Air inlet pipe by pipe
Road is connected to lower spiral case（5）Side wall on；Air inlet pipe diameter and main air duct（9）The ratio of diameter is 1:9~11.
8. the recyclegas of heat pump grain drying system is dried using claim 1 ~ 7 any described dust arrester
Method, it is characterised in that
Dust-laden air temperature into main air duct is 30 ~ 60 DEG C, and the flow velocity that dust-laden wind enters main air duct is 4 ~ 6m/s, by oblique flow wind
Machine（3）Afterwards in tangential flowing, the most solid impurities in dust-laden wind are made to reach lower spiral case（5）Near wall area, and pass through
Lower snail shell side wall enters cyclone dust collectors（13）, remaining a small amount of impurity is by dedusting sieve（4）Dedusting；Main wind after dedusting continues
Move downward, heat pump is returned to by discharge pipe.
9. method according to claim 8, it is characterised in that if dust-laden wind enter the flow of main air duct for 11000 ~
13000 m3/ h, the diagonal flow fan of configuration（3）Power is 7.5kW；If dust-laden wind enter the flow of main air duct for 7000 ~
11000m3/ h, the diagonal flow fan of configuration（3）Power is 5.5kW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510307282.4A CN104923416B (en) | 2015-06-05 | 2015-06-05 | Dust removal device for heat pump grain drying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510307282.4A CN104923416B (en) | 2015-06-05 | 2015-06-05 | Dust removal device for heat pump grain drying system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104923416A CN104923416A (en) | 2015-09-23 |
| CN104923416B true CN104923416B (en) | 2017-06-16 |
Family
ID=54111027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510307282.4A Active CN104923416B (en) | 2015-06-05 | 2015-06-05 | Dust removal device for heat pump grain drying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104923416B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106512623A (en) * | 2016-12-16 | 2017-03-22 | 中国科学院理化技术研究所 | Heat pump grain drying and dust removing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2282451Y (en) * | 1997-03-21 | 1998-05-27 | 曹训仁 | Vertical Venturi water dust scrubber made of steel |
| CN1478585A (en) * | 2003-07-19 | 2004-03-03 | 重庆正和生物能源有限公司 | Smoke desucfuration denitrification dedust process and device |
| CN1719170A (en) * | 2005-07-26 | 2006-01-11 | 北京科技大学 | Internal combustion engine driving heat pump fluidized bed drying device capable of recovering used heat |
| CN101189980A (en) * | 2006-11-20 | 2008-06-04 | 李胜 | Method for using heat pump atmospheric freeze drying to prepare dehydrating fruits and vegetables |
| CN201170684Y (en) * | 2007-11-09 | 2008-12-24 | 杨兰钦 | Equipment for drying material using hot pipe and heat pump |
| CN101526302A (en) * | 2009-04-17 | 2009-09-09 | 常州恒诚富士特干燥设备有限公司 | Low temperature cyclone type material drying system |
| CN204134673U (en) * | 2014-10-11 | 2015-02-04 | 湖北叶威（集团）粮油机械有限公司 | With the grain cleaning production line of online oven dry, dust arrester |
-
2015
- 2015-06-05 CN CN201510307282.4A patent/CN104923416B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2282451Y (en) * | 1997-03-21 | 1998-05-27 | 曹训仁 | Vertical Venturi water dust scrubber made of steel |
| CN1478585A (en) * | 2003-07-19 | 2004-03-03 | 重庆正和生物能源有限公司 | Smoke desucfuration denitrification dedust process and device |
| CN1719170A (en) * | 2005-07-26 | 2006-01-11 | 北京科技大学 | Internal combustion engine driving heat pump fluidized bed drying device capable of recovering used heat |
| CN101189980A (en) * | 2006-11-20 | 2008-06-04 | 李胜 | Method for using heat pump atmospheric freeze drying to prepare dehydrating fruits and vegetables |
| CN201170684Y (en) * | 2007-11-09 | 2008-12-24 | 杨兰钦 | Equipment for drying material using hot pipe and heat pump |
| CN101526302A (en) * | 2009-04-17 | 2009-09-09 | 常州恒诚富士特干燥设备有限公司 | Low temperature cyclone type material drying system |
| CN204134673U (en) * | 2014-10-11 | 2015-02-04 | 湖北叶威（集团）粮油机械有限公司 | With the grain cleaning production line of online oven dry, dust arrester |
Non-Patent Citations (1)
| Title |
|---|
| 粮食烘干塔除尘装置中离心式除尘器的优化;尹协镇等;《粮食与饲料工业》;20141031(第10期);第16-18页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104923416A (en) | 2015-09-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107940559B (en) | Active combination dust collecting equipment and remove haze formula air conditioning unit | |
| CN206229606U (en) | A kind of classification colouring dry dust removal device for Art Design | |
| CN104923416B (en) | Dust removal device for heat pump grain drying system | |
| CN206206290U (en) | Tilting inertia air filter | |
| CN107511273A (en) | Dust collector and long-acting haze removal combined air conditioning unit with dust accumulation | |
| CN104001630A (en) | Low-resistance cyclone separator of coal bed gas air blower | |
| CN208458453U (en) | Feed Manufacturing send cooling system with wind | |
| CN2138525Y (en) | Multi-stage vortex duster | |
| CN203886311U (en) | Device for removing coal ash from coal bed gas | |
| KR200465998Y1 (en) | Gathering apparatus for grain drier | |
| CN207628112U (en) | A kind of air intake guiding unit of sack cleaner | |
| CN206215389U (en) | Rotoclone collector | |
| CN213725691U (en) | Centrifugal hot back-blowing dehumidification mechanism of oxygenerator | |
| CN201791605U (en) | Two-stage high-efficiency cyclone dust collector | |
| CN107626166A (en) | A kind of sack cleaner with dust classification feature | |
| WO2016201652A1 (en) | Cement dust removal system | |
| CN207287803U (en) | Dust collector and long-acting haze removal combined air conditioning unit with dust accumulation | |
| CN208124458U (en) | A kind of air inlet system and its purification device of fan coil | |
| CN206082867U (en) | Dedicated ke long of stopping that can remove dust once more of feed processing | |
| CN208320317U (en) | Combined pneumatic dust-precipitating system | |
| CN208244976U (en) | A kind of cyclone separator with active carbon layer | |
| CN201537597U (en) | Combined type dry coal preparation apparatus | |
| CN206652619U (en) | A kind of rotoclone collector | |
| CN207887367U (en) | A kind of Multi-tube cyclone duster | |
| CN109909077A (en) | A kind of multicyclone for large dust particle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |