CN104056838B - Negative pressure air drafting hood - Google Patents
Negative pressure air drafting hood Download PDFInfo
- Publication number
- CN104056838B CN104056838B CN201410330251.6A CN201410330251A CN104056838B CN 104056838 B CN104056838 B CN 104056838B CN 201410330251 A CN201410330251 A CN 201410330251A CN 104056838 B CN104056838 B CN 104056838B
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- sphere
- spherical
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- pressure air
- air
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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- Air-Flow Control Members (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a negative pressure air drafting hood. The negative pressure air drafting hood can be used at the tail end of a negative pressure air system. The negative pressure air drafting hood is a hollow hood which gradually changes from a circular truncated cone to a square from the upper end to the lower end, and an upper and lower bi-spherical pore plate combination structure is arranged in a center region in the air drafting hood and is fixed onto the inner wall of the air drafting hood through two wing-shaped structures. When the negative pressure air drafting hood is used for negative presusre air drafting, the upper and lower bi-spherical pore plate combination structure realizes even air speed and constant air pressure of the horizontal cross section at the air drafting opening position of the air drafting hood.
Description
Technical field
The present invention relates to a kind of negative-pressure air-suction cover, especially energy uniformly air quantity and dust suction efficiency equipment, belong to humidity discharging, remove
Dirt systems technology field.
Background technology
At present in commercial production, industrial environment dedusting, ventilatory applications are very extensive.Its system end frequently be in one kind
Hold and fade to, for round platform, the suspended hood that lower end is square body.Also known as umbrella hood, tip section is circular to lower end to this kind of suspended hood
Fade to square.Its shape of this kind of suspended hood determines the inhomogeneities in section for its air draught wind speed, and centre wind speed is larger, four
The space wind speed of individual wall lower semisection intersection is minimum, and forms air turbulence, thus affecting the effect of dedusting.
Content of the invention
The present invention is directed to above-mentioned technical deficiency, it is desirable to provide one kind in humidity discharging, dust pelletizing system, imitate by dust absorbing
The high negative-pressure dust suction hood of rate.
For solve above-mentioned technical problem, negative-pressure air-suction cover of the present invention adopt the following technical scheme that it is characterized in that: suspended hood
Body (1) is a upper end is square hollow cover body in the round table-like lower end that fades to, and the internal central area of air draught cover body (1) leads to
Cross double spherical structures that left and right two aerofoil profile (4) fixes, its described pair of spherical structure is by top sphere hole plate (2) and bottom
Sphere orifice plate (3) mutually fastens and forms, and the sphere orifice plate of top sphere hole plate (2) and lower spherical orifice plate (3) has several leading to
Hole.
The sphere main view direction of described top sphere hole plate (2) is to be convex to, the sphere main view direction of lower spherical orifice plate (3)
For concaving towards, the two is combined into internal double spherical structures for hollow.
The radius of the radian of described middle and upper part sphere orifice plate (2) or lower spherical orifice plate (3) each sphere orifice plate is from upper
To under become larger.
In described double spherical structures, the diameter dimension of sphere orifice plate is installed air draught cover body (1) cross section inside dimension by it
1/3～2/3.
Through-hole diameter on described each sphere orifice plate is 0.5mm～30mm.
The through hole of the spherical cambered surface plate surface of described pair of spherical structure is in asymmetric shape, i.e. the through hole of upper and lower spherical cambered surface plate surface
Diameter is relatively and unequal, and the upper lower through-hole center of spherical cambered surface plate surface is not on same vertical line.
Operation principle: the double spherical structures being arranged on air draught cover body 1 interior central area can increase suction to a certain extent
The resistance of fan housing body 1 interior central area but do not block the intake of central area, the air quantity in also shunt centre region arrives simultaneously
Both sides wall portion within air draught cover body 1, so that the air quantity that carries out in the same cross section within air draught cover body 1 keeps all
Even, greatly strengthen humidity discharging, the effect of dedusting.
The invention has the advantages that: existing suspended hood affecting due to air turbulence in dust pelletizing system can be effectively improved
Practical application effect；There is the air quantity at the internal inlet scoop of double sphere hole plate integrated structure energy uniform air sucking covers up and down, effectively strengthen
The effect of dedusting.
Brief description
Fig. 1 is the front view of negative-pressure air-suction cover of the present invention；
Fig. 2 is the upward view of negative-pressure air-suction cover of the present invention；
Fig. 3 is the enlarged drawing in double spherical structure main view directions.
In figure: 1 air draught cover body；2 top sphere hole plates；3 lower spherical orifice plates；4 aerofoil profiles；5 through holes；6—
Circle outputs air port；7 square air inlets.
Specific embodiment
Shown embodiment once describes in detail to the present invention below in conjunction with the accompanying drawings, wherein described in this specification
" on ", D score position relationship respectively the upper and lower shown in respective figure 1 to.
Referring to shown in accompanying drawing 1,2, the present invention discloses a kind of humidity discharging, dedusting suspended hood, comprising: air draught cover body 1 upper end is circle
Platform, air draught cover body 1 lower end be square body, in the middle of round platform and square body be gradual change, air draught cover body 1 bosom region equipped with
One double spherical structure；Connect the wing former 3 of air draught cover body 1 and top sphere hole plate 2 or lower spherical orifice plate 2, be arranged at
Top sphere hole plate 2 and the through hole 5 of lower spherical orifice plate 3, connect air draught cover body 1 upper circular air outlet and outside air draft system
Airduct.
Double spherical structures a diameter of installation suspended hood in invention top sphere hole plate 2 or lower spherical orifice plate 2 composition
The 1/2 of body 1 bottom square air inlet cross section inner wall size.
The radius of the radian of each sphere orifice plate is to become larger from top to bottom.
On each sphere orifice plate, through-hole diameter becomes larger from top to bottom with the radius of the radian of sphere orifice plate, then each sphere hole
In plate through-hole diameter layering fade to 30mm from 0.5mm, reason be the centre of arcuation sphere orifice plate just to air port, wind-force is relatively
Greatly, through-hole diameter is a little bit smaller, favorably reduces intake, and closer to the periphery of arcuation sphere orifice plate, wind-force is in tangentially to slip into, through hole
Diameter is a little big, favorably increases intake.Up and down the through-hole diameter of spherical cambered surface plate surface is relatively and unequal, its upper and lower spherical cambered surface
Not on same vertical line, purpose is also to make way for double sphere hole plate integrated structures realities up and down at the upper lower through-hole center of plate surface
At the inlet scoop of existing suspended hood, the wind speed of horizontal section is uniform, blast is constant.
When negative-pressure air-suction, wind first enters the inside of air draught cover body 1 from the square air inlet in air draught cover body 1 bottom, and wind is pacified
The lower spherical orifice plate 3 of double spherical structures of dress blocks, and wherein a part of wind enters double sphere knots from lower spherical orifice plate 3 through hole
Structure internal cavities, then from top sphere hole plate 2 sphere through hole equably out, finally from air draught cover body 1 upper circular exit；
Another part wind is blocked by the sphere orifice plate of lower spherical orifice plate 3, is evenly dispersed into spherical plate four along lower spherical orifice plate 3
In week, flow to the round exit on air draught cover body 1 top further along spherical plate surrounding (four the week side of boss walls within then from air draught cover body 1)
Place.Thus ensureing the goal of the invention that wind speed is uniform, blast is constant of every layer of transverse section of level at the internal inlet scoop of air draught cover body 1.
Above-described embodiment only technology design to illustrate the invention and feature, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implements according to this, can not be limited the scope of the invention with this.All according to the present invention
Equivalence changes or modification that spirit is made, all should be included within the scope of the present invention.
Claims (6)
1. a kind of negative-pressure air-suction cover it is characterised in that: air draught cover body (1) be a upper end be in round table-like fade to lower end be square
Hollow cover body, the internal central area of air draught cover body (1) fixes double spherical structures of by left and right two aerofoil profile (4),
Its described pair of spherical structure is mutually fastened by top sphere hole plate (2) and lower spherical orifice plate (3) and forms, top sphere hole plate
And the sphere orifice plate of lower spherical orifice plate (3) has several through holes (2)；
The through hole of the spherical cambered surface plate surface of described pair of spherical structure is in asymmetric shape, i.e. the through-hole diameter of upper and lower spherical cambered surface plate surface
Relatively and unequal.
2. negative-pressure air-suction cover according to claim 1 it is characterised in that: the sphere of described top sphere hole plate (2) be convex
To the sphere of lower spherical orifice plate (3) is to concave towards, and the two is combined into internal double spherical structures for hollow.
3. negative-pressure air-suction cover according to claim 1 it is characterised in that: described top sphere hole plate (2) or lower ball
In face plate (3), the radius of the radian of each sphere orifice plate is to become larger from top to bottom.
4. negative-pressure air-suction cover according to claim 1 it is characterised in that: in described double spherical structures, sphere orifice plate is straight
The 1/3～2/3 of footpath a size of its installed air draught cover body (1) cross section inside dimension.
5. a kind of negative-pressure air-suction cover according to claim 1 it is characterised in that: the through-hole diameter on each described sphere orifice plate
For 0.5mm～30mm.
6. a kind of negative-pressure air-suction cover according to claim 1 it is characterised in that: the upper lower through-hole of described spherical cambered surface plate surface
Center is not on same vertical line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410330251.6A CN104056838B (en) | 2014-07-13 | 2014-07-13 | Negative pressure air drafting hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410330251.6A CN104056838B (en) | 2014-07-13 | 2014-07-13 | Negative pressure air drafting hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104056838A CN104056838A (en) | 2014-09-24 |
| CN104056838B true CN104056838B (en) | 2017-01-25 |
Family
ID=51544934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410330251.6A Active CN104056838B (en) | 2014-07-13 | 2014-07-13 | Negative pressure air drafting hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104056838B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151107A (en) * | 2016-08-02 | 2016-11-23 | 南通白云环保工程设备有限公司 | A kind of band speed reducer type wind-collecting cover |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2948041B1 (en) * | 2009-07-20 | 2013-01-04 | Inst Nat Rech Securite | DEVICE FOR RECOVERING PARTICLES AND DEBRIS EJECTED BY MACHINING AND MACHINE FOR CORRESPONDING MACHINING |
| CN202220181U (en) * | 2011-08-02 | 2012-05-16 | 姚立猛 | Air draft cover device |
| CN203356164U (en) * | 2013-05-16 | 2013-12-25 | 溧阳市正翔精密机械有限公司 | Peripheral dust suction hood and dust collector provided with same |
| CN203370799U (en) * | 2013-06-14 | 2014-01-01 | 鞍钢集团工程技术有限公司 | Uniform air suction cover |
| CN203343150U (en) * | 2013-06-23 | 2013-12-18 | 江苏苏亚机电制造有限公司 | Grating type dust hood |
| CN203972442U (en) * | 2014-07-13 | 2014-12-03 | 红塔烟草(集团)有限责任公司 | A kind of negative-pressure air-suction cover |
-
2014
- 2014-07-13 CN CN201410330251.6A patent/CN104056838B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104056838A (en) | 2014-09-24 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190212 Address after: 650051 No. 118 Hongta Avenue, Hongta District, Yuxi City, Yunnan Province Co-patentee after: Yunnan Jetion Technology Co., Ltd. Patentee after: Hongta Tobacco (Group) Co., Ltd. Address before: 653100 No. 118 Hongta Avenue, Yuxi City, Yunnan Province Co-patentee before: Yuxi Jixing Deyi Industry & Trade Co., Ltd. Patentee before: Hongta Tobacco (Group) Co., Ltd. |
|
| TR01 | Transfer of patent right |