CN101602438B - Spiral powder conveying device - Google Patents
Spiral powder conveying device Download PDFInfo
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- CN101602438B CN101602438B CN2009101037784A CN200910103778A CN101602438B CN 101602438 B CN101602438 B CN 101602438B CN 2009101037784 A CN2009101037784 A CN 2009101037784A CN 200910103778 A CN200910103778 A CN 200910103778A CN 101602438 B CN101602438 B CN 101602438B
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Abstract
The invention relates to a spiral powder conveying device, which comprises a driving device (1), a conveying device shell (2), a coupling (5), a rotating shaft (4), spiral blades (6), a powder feeding port (7), a powder discharging port (8), an end bearing (9) and a tail bearing (10). The spiral powder conveying device is characterized in that the bottom of the conveying device shell (2) is provided with an air chamber (3) which is provided with an air inlet pipe (12); and an air inlet small hole (11) is reserved between the conveying device shell (2) and the air chamber (3). The device of the invention can reduce the starting current, reduce the equipment running electric consumption, and reduce the requirement on the strength of the rotating shaft during long-distance conveying; and the service life of the powder conveying device can be improved. After the powder conveying device stops feeding powder, the air entering the conveying device shell from the air inlet pipe and the air inlet small hole can totally discharge the powder stored in the device; therefore, the self-ignition possibility for conveying the combustible powder is avoided, and the safety of the device is improved.
Description
Technical field
The invention belongs to powder conveying device, especially for the helix transporting device of fine particle or powder.
Background technology
Spiral powder conveying device can be used for the conveying of fine particle or powder, in middle bunker formula pulverized coal preparation system, often spiral powder conveying device is used for the conveying and the scheduling of coal dust.Existing spiral powder conveying device does not have flexible traction organ, its utilize have helicallobe axle in the sealing casing rotation and promote the coal dust motion, reach the purpose of transportation coal dust.As a kind of continuous conveyor, the quality of its performance, the height of serviceability will directly influence the stable and economical operation of unit and even whole production line.
Existing spiral powder conveying device exists following problems:
1, starting current is excessive even be difficult to start.When being full of coal dust in the spiral powder conveying device, because the static friction force of coal dust and spiral powder conveying device casing is very big, can causing starting current excessive, even be difficult to start;
2, the operation power consumption is high.In the process of spiral powder conveying device operation; Still exist very big force of sliding friction between the casing of coal dust and spiral powder conveying device; Overcome this lasting force of sliding friction, spiral powder conveying device must provide enough mechanical energy, promptly will consume corresponding electric energy;
3, fed distance is limited, and the plant maintenance work capacity is big.Along with the increase of spiral powder conveying device fed distance, rotational resistance increases, and the intensity that the spiral powder conveying device axle needs increases; Often carry the flow of powder to be difficult to accuracy control; Add powder hardening after making moist, the rotational force that the spiral powder conveying device bearing is received increases, and causes shaft distortion to damage;
4, dieseling happens occasionally.Particularly the coal dust of bituminous coal class belongs to intense explosion property coal, when the spiral powder conveying device pulverized coal conveying finishes shutdown, is stockpiled at lower curtate by few part coal dust all the time, stockpiles the spontaneous combustion that causes coal dust easily for a long time.
Summary of the invention
The object of the present invention is to provide a kind of spiral powder conveying device that reduces Transport resistance.
The technical scheme that the present invention takes for the existing middle problem that exists of solution is: a kind of spiral powder conveying device comprises actuating device, the feedway housing; Coupler, rotating shaft, the helicallobe in the rotating shaft; Powder inlet on the feedway housing and meal outlet; Near the end bearing of powder inlet with near the tail bearing of meal outlet, it is characterized in that: the feedway housing bottom is provided with air compartment, and air compartment is provided with blast pipe; Be provided with the air intake aperture between feedway housing and the air compartment.
Said feedway housing is cylindrical; Said air compartment is the arc air compartment; Said blast pipe is arranged on an end of said arc air compartment segmental arc.
Above-mentioned air compartment is connected with high-pressure air source through blast pipe.Lead to high pressure gas by blast pipe to air compartment during use.High pressure gas can be the gas of heating or the unreactable gas of unreactable gas or heating.When particularly working as the powder of being carried and be combustible powder such as coal dust, preferably adopt the unreactable gas of heating.
The invention has the beneficial effects as follows:
When adopting helix transporting device of the present invention; High pressure gas can be close to the very thin air film of inner walls formation one deck after the air intake aperture sprays into cylindrical delivery device case inside; Thereby reduce the friction force between powdered granule and the powder conveying device casing greatly, better effects if when with gas heating.Thereby the requirement of countershaft intensity in the time of can reducing starting current, reduction equipment operation power consumption, reduction length distances, the service life of improving powder conveying device.In addition, after powder conveying device stopped into powder, the gas of feeding can all be got rid of the powder that stockpiles in the device to device, thereby had avoided carrying the spontaneous combustion possibility of combustible powder, had improved the safety of device.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the A-A section-drawing of Fig. 1.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, lift following examples, and the conjunction with figs. explanation is as follows at present:
See also Fig. 1, Fig. 2, a kind of spiral powder conveying device comprises actuating device 1; Cylindrical delivery device case 2, coupler 5, rotating shaft 4; Helicallobe 6 in the rotating shaft 4; Powder inlet 7 on the cylindrical delivery device case 2 and meal outlet 8, near the end bearing 9 of powder inlet 7 with near the tail bearing 10 of meal outlet 8, it is characterized in that: cylindrical delivery device case 2 bottoms are provided with arc air compartment 3; Arc air compartment 3 is provided with blast pipe 12, is provided with air intake aperture 11 between cylindrical delivery device case 2 and the arc air compartment 3.In this example, blast pipe 12 is arranged on an end of arc air compartment 3 segmental arcs, makes air inlet even.To arc air compartment 3 logical high pressure gas, high pressure gas can be the gas of heating by blast pipe 12.When the powder of being carried was combustible powder such as coal dust, gas was used unreactable gas, and unreactable gas can be the gas of heating.During work, actuating device 1 drives rotating shaft 4 rotations of spiral powder conveying device, and powdered granule gets in the cylindrical delivery device case 2 through powder inlet 7, under the promotion of helicallobe 6, moves forward, and discharges from meal outlet 8 at last.In rotating shaft 4 rotating process, high pressure gas get into arc air compartment 3 from blast pipe 12, and the air intake aperture 11 through cylindrical delivery device case 2 bottoms sprays into cylindrical delivery device case 2 inside.Because the air intake aperture of cylindrical delivery device case 2 bottoms is close and many, high pressure gas can be being close to the very thin air film of its inwall formation one deck after spraying into cylindrical delivery device case 2 inside from air intake aperture 11, if with gas heating, air film more is prone to form.The formation of this air film can reduce the friction force between powdered granule and the cylindrical delivery device case 2 greatly; Not only can reduce starting current, the reduction equipment operation power consumption of powder conveying device; And the requirement of countershaft intensity can reduce long distances the time, prolong service life of equipment.In addition, after powder conveying device stopped into powder, the gas of feeding can all be got rid of the powder that stockpiles in the device to device, thereby had avoided carrying the spontaneous combustion possibility of combustible powder, had improved the safety of device.
Claims (5)
1. a spiral powder conveying device comprises actuating device (1), feedway housing (2); Coupler (5), rotating shaft (4), the helicallobe (6) in the rotating shaft (4); Powder inlet (7) on the feedway housing (2) and meal outlet (8); Near the end bearing (9) of powder inlet (7) with near the tail bearing (10) of meal outlet (8), it is characterized in that: feedway housing (2) bottom is provided with air compartment (3), and air compartment (3) is provided with blast pipe (12); Be provided with air intake aperture (11) between feedway housing (2) and the air compartment (3); Said feedway housing (2) is cylindrical; Said air compartment (3) is the arc air compartment; Said blast pipe (12) is arranged on an end of said arc air compartment segmental arc.
2. spiral powder conveying device according to claim 1 is characterized in that: said air compartment (3) is connected with high-pressure air source through blast pipe (12).
3. spiral powder conveying device according to claim 2 is characterized in that: high-pressure air source is the gas of heating.
4. spiral powder conveying device according to claim 2 is characterized in that: high-pressure air source is a unreactable gas.
5. spiral powder conveying device according to claim 2 is characterized in that: high-pressure air source is the unreactable gas of heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101037784A CN101602438B (en) | 2009-05-05 | 2009-05-05 | Spiral powder conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101037784A CN101602438B (en) | 2009-05-05 | 2009-05-05 | Spiral powder conveying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101602438A CN101602438A (en) | 2009-12-16 |
| CN101602438B true CN101602438B (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101037784A Active CN101602438B (en) | 2009-05-05 | 2009-05-05 | Spiral powder conveying device |
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| CN (1) | CN101602438B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950694A (en) * | 2014-04-22 | 2014-07-30 | 蚌埠市兄弟粮油食品科技有限公司 | Flour conveying equipment |
| CN104528293B (en) * | 2014-11-26 | 2017-01-25 | 成都贝发信息技术有限公司 | Air-cooled drug delivery system supporting rapid production |
| CN106586460B (en) * | 2015-10-15 | 2019-02-01 | 中联重科股份有限公司 | A kind of screw conveyor, control device and feeding method |
| CN108163473B (en) * | 2017-12-28 | 2020-05-12 | 胜帮科技股份有限公司 | Powder material conveying device |
| CN112193744B (en) * | 2020-09-17 | 2022-04-08 | 江苏东南植保有限公司 | A carry hoist mechanism for pesticide processing production |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1810612A (en) * | 2005-01-26 | 2006-08-02 | 兰爱克谢斯德国有限责任公司 | Method and device for dosing and pneumatic conveyance of low flowability bulk material |
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2009
- 2009-05-05 CN CN2009101037784A patent/CN101602438B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1810612A (en) * | 2005-01-26 | 2006-08-02 | 兰爱克谢斯德国有限责任公司 | Method and device for dosing and pneumatic conveyance of low flowability bulk material |
Non-Patent Citations (6)
| Title |
|---|
| JP昭56-65724A 1981.06.03 |
| JP昭59-182115A 1984.10.16 |
| JP特开2003-2428A 2003.01.08 |
| JP特开2008-155165A 2008.07.10 |
| JP特开2009-82852A 2009.04.23 |
| JP特开平9-40184A 1997.02.10 |
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| CN101602438A (en) | 2009-12-16 |
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