CN104923416B - A kind of dust arrester for heat pump grain drying system - Google Patents

A kind of dust arrester for heat pump grain drying system Download PDF

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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
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dust
spiral case
air duct
main air
heat pump
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CN104923416A (en
Inventor
孙椰望
杨鲁伟
张振涛
杨俊玲
魏娟
张冲
王超
李博
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Technical Institute of Physics and Chemistry of CAS
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Technical Institute of Physics and Chemistry of CAS
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/90Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/85Food storage or conservation, e.g. cooling or drying

Abstract

The present invention relates to a kind of dust arrester for heat pump grain drying system, 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, diagonal flow fan lower section is provided with lower spiral case, and 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 on the side wall of lower spiral case by pipeline.Dust arrester proposed by the present invention, by the rotating centrifugal airflow function of diagonal flow fan, lower spiral case near wall is focused on by the grain miscellany in main air duct;Separated and collected by cyclone dust collectors again, reached grain dedusting purpose;Meanwhile, the main air quantity of main air duct is sieved by final dusting and enters heat pump, so as to realize the dedusting and efficiently utilization of heat pump grain drying system circulation wind.

Description

A kind of dust arrester for heat pump grain drying system
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.
CN201510307282.4A 2015-06-05 2015-06-05 A kind of dust arrester for heat pump grain drying system Active CN104923416B (en)

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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-based grain-drying dust-removing device

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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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