CN104923416A - Dust removal device for heat pump grain drying system - Google Patents
Dust removal device for heat pump grain drying system Download PDFInfo
- Publication number
- CN104923416A CN104923416A CN201510307282.4A CN201510307282A CN104923416A CN 104923416 A CN104923416 A CN 104923416A CN 201510307282 A CN201510307282 A CN 201510307282A CN 104923416 A CN104923416 A CN 104923416A
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- China
- Prior art keywords
- main air
- air duct
- dust
- heat pump
- spiral case
- Prior art date
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- 239000000428 dust Substances 0.000 title claims abstract description 74
- 238000001035 drying Methods 0.000 title claims abstract description 32
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 238000010410 dusting Methods 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 239000012141 concentrate Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000005516 engineering process 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
- 230000004087 circulation Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 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
- 239000000463 material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001839 systemic circulation Effects 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, be specifically related to a kind of gas cleaning plant of drying grain.
Background technology
Along with the extreme degradation of environment situation and an urgent demand of energy-saving and emission-reduction, heat pump drying technology has become the inexorable trend of alternative traditional coal-fired drying system.The outstanding advantage of heat pump is energy saving and the no pollution discharge of circulated air; But heat pump grain heat-drying requires clean circulated air condition, so the circulated air dedusting of heat pump grain drying becomes important content.At present, deduster mainly comprises electric precipitation and bag-type dust, its role is to remove the particle in air; These two kinds of dedusting methods differ from one another, and can reach the object of removing air pollution particle.But the environment for use that electric precipitation requires is harsh, Energy control and complex structure; Sack cleaner is short for service life, and windage is large; So electric precipitation and sack cleaner are not suitable for heat pump cycle wind effective utilization system.
Utilizing centrifugal force to be separated by solid particle in fluid is conventional separation means.The dust-laden wind of drying grain is directly sent into centrifugal separating device, needs separator to mate with dust-laden wind flow.But the coupling feature of heat pump grain heat-drying to the energy loss of circulated air and clean level requires very high, and general dirt pocket does not reach the requirement of heat pump grain drying circulated air dedusting, so must propose more effective technical scheme to the purification of heat pump cycle wind.
Summary of the invention
(1) technical problem that will solve
The object of the invention is the weak point existed for this area, a kind of dust arrester for heat pump grain drying system is provided.
Another object of the present invention is the application proposing described dust arrester.
(2) technical scheme
Object of the present invention is achieved through the following technical solutions:
For a dust arrester for heat pump grain drying system, described heat pump grain drying system comprises the hothouse of heat pump and drying grain, and the dust-laden wind pipeline of hothouse is connected with dust arrester;
Described dust arrester comprises columniform main air duct and cyclone dust collectors;
Described main air duct top is provided with upper volute, connects diagonal flow fan below described upper volute, connects lower spiral case, connect discharge pipe below described lower spiral case by discharge pipe joint below diagonal flow fan;
Described cyclone dust collectors top gas outlet connects described upper volute, the air inlet pipe of cyclone dust collectors is connected to by pipeline on the sidewall of lower spiral case, lower spiral case is connected side-walls with cyclone dust collectors and has connector, its connector size and cyclone dust collectors air inlet pipe measure-alike
Further, in described main air duct, be provided with dedusting sieve below diagonal flow fan, described dedusting sieve is cone shape, and upwards, the outer rim of dedusting sieve and the lower end of lower volute outer wall are bolted protruding one side.
Wherein, described cyclone dust collectors top gas outlet connects described upper volute by de-dusting cycle airduct, de-dusting cycle airduct is provided with dedusting wind control valve.
Inventor repeatedly gropes the outlet of cyclone dust collectors top gas with the link position of upper volute and compares, in order to reduce the dedusting wind of upper volute to the impact of main air duct, propose preferably to be designed to: described cyclone dust collectors top gas outlet and described upper volute link position (in link position central point) are positioned at 2/5 to 3/5 place of described upper volute height.
Further preferably, in order to realize the abundant separation main air duct of solid impurity, the height of lower spiral case is 300mm; The height of upper volute is 500mm.
More preferably, the distance of air inlet (in air inlet central point) the distance upper and lower port of cyclone dust collectors top gas outlet connection upper volute is respectively 250mm.
Wherein, the outer wall of described main air duct is provided with the support fixed on the ground by main air duct.
Wherein, described discharge pipe is provided with main air control valve.
Wherein, the air inlet pipe of described cyclone dust collectors is connected on the sidewall of lower spiral case by pipeline.Because the too high effective utilization that can reduce main air of dedusting air quantity, the too low dedusting being unfavorable for main air of dedusting air quantity, so the ratio of air inlet pipe diameter and main air duct diameter is 1:9-11.
The recyclegas of dust arrester to heat pump grain drying system that application the present invention proposes carries out dry method, is specially:
The dust-laden air temperature entering main air duct is 30-60 DEG C, the flow velocity that dust-laden wind enters main air duct is 4 ~ 6m/s, in tangential flowing after diagonal flow fan, make the near wall district of spiral case under the most solid impurities in dust-laden wind, and entering cyclone dust collectors by lower spiral case sidewall, all the other a small amount of impurity screen out dirt by dedusting; Main air after dedusting continues to move downward, and gets back to heat pump by discharge pipe.
Inventor gropes through practice and optimizes, and proposes the matching relationship of dust-laden wind and diagonal flow fan model, is specially: if the flow that dust-laden wind enters main air duct is 11000 ~ 13000m
3/ h, diagonal flow fan (3) power of configuration is 7.5kW; If the flow that dust-laden wind enters main air duct is 7000 ~ 11000m
3/ h, diagonal flow fan (3) power of configuration is 5.5kW.
(3) beneficial effect
The dust arrester of the heat pump grain drying system that the present invention proposes, by the rotating centrifugal airflow function of diagonal flow fan, focuses on lower spiral case near wall by the grain miscellany in main air duct; The foreign material of lower spiral case near wall carry out separated and collected by described cyclone dust collectors, reach grain dedusting object; Meanwhile, the main air quantity of main air duct enters heat pump by final dusting sieve, thus realizes dedusting and the efficiency utilization of heat pump grain drying systemic circulation wind, and provides technical guarantee for the energy-saving and emission-reduction realizing grain drying.
Accompanying drawing explanation
Fig. 1 is the dust arrester schematic diagram of heat pump grain drying system of the present invention;
In figure, numbering and component names corresponding relation are: 1 main air air inlet, 2 upper volutes, 3 diagonal flow fans, 4 dedustings sieve, 5 times spiral cases, 6 discharge pipe joints, 7 main air control valves, 8 main air 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 control valves, 18 heat pumps.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Embodiment 1
See Fig. 1, a kind of dust arrester for heat pump grain drying system, described heat pump grain drying system comprises the hothouse 14 of heat pump and drying grain, and the dust-laden wind pipeline of hothouse 14 is connected with dust arrester.This dust arrester comprises columniform main air duct 9 and cyclone dust collectors 13.
Main air duct 9 top is provided with upper volute 2, and the axially open of this upper volute 2 is main air air inlet 1; Connect diagonal flow fan 3 below upper volute 2, connect lower spiral case 5 below diagonal flow fan 3, the axially open of this lower spiral case is main air air outlet 8; Connect discharge pipe by discharge pipe joint 6 below lower spiral case 5, discharge pipe is provided with main air control valve 7.
In main air duct 9, be provided with the dedusting sieve 4 of cone shape below diagonal flow fan 3, upwards, the dedusting sieve outer rim of 4 and the lower end of lower spiral case 5 outer wall are bolted protruding one side.The outer wall of main air duct 9 is provided with the support 11 fixed on the ground by main air duct.
The outlet of cyclone dust collectors 13 top gas connects described upper volute 2 by de-dusting cycle airduct 16, de-dusting cycle airduct 16 is provided with dedusting wind control valve 17.Upper volute height 500mm, the air inlet center line that de-dusting cycle airduct 16 connects upper volute 2 is positioned at upper volute 250mm At The Height.The air inlet pipe of cyclone dust collectors 13 is connected to by pipeline on the sidewall of lower spiral case 5, and the ratio of air inlet pipe diameter and main air duct 9 diameter is 1:10.Lower spiral case 5 is connected side-walls with cyclone dust collectors 13 and has connector, its connector size and cyclone dust collectors air inlet pipe measure-alike.
The recyclegas of dust arrester to heat pump grain drying system of application the present embodiment carries out dry method, is specially:
The dust-laden air temperature entering main air duct is 30-60 DEG C, and the flow that dust-laden wind enters main air duct is 12000m
3/ h, in tangential flowing after diagonal flow fan 3 (power 7.5kW), make the most solid impurities in dust-laden wind arrive the near wall district of lower spiral case 5, and enter cyclone dust collectors 13 by lower spiral case sidewall, all the other a small amount of impurity sieve 4 by final dusting by dedusting; Wind after dedusting continues to move downward, and gets back to heat pump by discharge pipe.
The flow velocity that dust-laden wind enters main air duct is 5m/s, and after dust arrester, efficiency of dust collection reaches about 97%.
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: because connected heat pump grain drying system dimension is less, in the present embodiment dust arrester, diagonal flow fan power is 5.5KW.
The recyclegas of dust arrester to heat pump grain drying system of application the present embodiment carries out dry method, is specially:
The dust-laden air temperature entering main air duct is 40 DEG C, and the flow that dust-laden wind enters main air duct is 10500m
3/ h is tangential flowing after diagonal flow fan, and make the most solid impurities in dust-laden wind arrive the near wall district of lower spiral case 5, and enter cyclone dust collectors 13 by lower spiral case sidewall, all the other a small amount of impurity sieve 4 by final dusting by dedusting; Wind after dedusting continues to move downward, and gets back to heat pump by discharge pipe.
The flow velocity that dust-laden wind enters main air duct is 4.5m/s, and after dust arrester, efficiency of dust collection reaches about 97%.
Finally it should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those skilled in the art are to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (10)
1. for a dust arrester for heat pump grain drying system, described heat pump grain drying system comprises the hothouse of heat pump and drying grain, and the dust-laden wind pipeline of hothouse is connected with dust arrester; It is characterized in that,
Described dust arrester comprises columniform main air duct (9) and cyclone dust collectors (13);
Described main air duct (9) top is provided with upper volute (2), described upper volute (2) below connects diagonal flow fan (3), diagonal flow fan (3) below connects lower spiral case (5), and described lower spiral case (5) below connects discharge pipe by discharge pipe joint (6);
The outlet of described cyclone dust collectors (13) top gas connects described upper volute (2), the air inlet pipe of cyclone dust collectors (13) is connected to by pipeline on the sidewall of lower spiral case (5), lower spiral case (5) is connected side-walls with cyclone dust collectors (13) and has connector, its connector size and cyclone dust collectors air inlet pipe measure-alike.
2. dust arrester according to claim 1, it is characterized in that, in described main air duct (9), diagonal flow fan (3) below is provided with dedusting sieve (4), described dedusting sieve (4) is cone shape, upwards, the dedusting sieve outer rim of (4) and the lower end of lower spiral case (5) outer wall are bolted protruding one side.
3. dust arrester according to claim 1, it is characterized in that, the outlet of described cyclone dust collectors (13) top gas connects described upper volute (2) by de-dusting cycle airduct (16), de-dusting cycle airduct (16) is provided with dedusting wind control valve (17).
4. according to the arbitrary described dust arrester of claims 1 to 3, it is characterized in that, the outlet of described cyclone dust collectors (13) top gas and described upper volute (2) link position are positioned at 2/5 to 3/5 place of described upper volute (2) height.
5., according to the arbitrary described dust arrester of claims 1 to 3, it is characterized in that, the height of described lower spiral case (5) is 300mm; The height of upper volute (2) is 500mm.
6. dust arrester according to claim 1, is characterized in that, the outer wall of described main air duct (9) is provided with the support fixed on the ground by main air duct.
7. dust arrester according to claim 1, is characterized in that, described discharge pipe is provided with main air control valve (7).
8. dust arrester according to claim 1, is characterized in that, the air inlet pipe of described cyclone dust collectors (13) is connected to by pipeline on the sidewall of lower spiral case (5); The ratio of air inlet pipe diameter and main air duct (9) diameter is 1:9 ~ 11.
9. application rights requires that 1 ~ 8 arbitrary described recyclegas of dust arrester to heat pump grain drying system carries out dry method, it is characterized in that,
The dust-laden air temperature entering main air duct is 30 ~ 60 DEG C, the flow velocity that dust-laden wind enters main air duct is 4 ~ 6m/s, in tangential flowing after diagonal flow fan (3), make the near wall district of spiral case (5) under the most solid impurities in dust-laden wind, and entering cyclone dust collectors (13) by lower spiral case sidewall, all the other a small amount of impurity are by (4) dedusting of dedusting sieve; Main air after dedusting continues to move downward, and gets back to heat pump by discharge pipe.
10. method according to claim 9, is characterized in that, if the flow that dust-laden wind enters main air duct is 11000 ~ 13000m
3/ h, diagonal flow fan (3) power of configuration is 7.5kW; If the flow that dust-laden wind enters main air duct is 7000 ~ 11000m
3/ h, diagonal flow fan (3) power of configuration 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 |
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| Publication Number | Publication Date |
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| CN104923416A true CN104923416A (en) | 2015-09-23 |
| CN104923416B CN104923416B (en) | 2017-06-16 |
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| CN201510307282.4A Active CN104923416B (en) | 2015-06-05 | 2015-06-05 | Dust removal device for heat pump grain drying system |
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Cited By (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 |
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| CN2282451Y (en) * | 1997-03-21 | 1998-05-27 | 曹训仁 | Vertical Venturi water dust scrubber made of steel |
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| 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 |
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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 |
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| Title |
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Cited By (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 |
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