CN203972442U - A kind of negative-pressure air-suction cover - Google Patents
A kind of negative-pressure air-suction cover Download PDFInfo
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- CN203972442U CN203972442U CN201420383610.XU CN201420383610U CN203972442U CN 203972442 U CN203972442 U CN 203972442U CN 201420383610 U CN201420383610 U CN 201420383610U CN 203972442 U CN203972442 U CN 203972442U
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- orifice plate
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- pressure air
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Abstract
The utility model discloses a kind of negative-pressure air-suction cover, and negative-pressure air-suction cover can be used for negative pressure wind system end.Negative-pressure air-suction cover its be a upper end be round platform to fade to lower end be square hollow cover, described suspended hood inside center region division has upper and lower two sphere hole plate integrated structures, by two airfoil structures, is fixed on suspended hood inwall.The utility model when the negative-pressure air-suction, is positioned at upper and lower two sphere hole plate integrated structures and realizes that the wind speed of place, inlet scoop horizontal section of suspended hood is even, blast is constant.
Description
Technical field
The utility model relates to a kind of negative-pressure air-suction cover.Particularly an equipment for the even air quantity of energy and dust suction efficiency, belongs to humidity discharging, dust pelletizing system technical field.
Background technology
In industrial production, industrial environment dedusting, ventilatory applications are very extensive at present.What its system end often adopted is that a kind of upper end is that round platform fades to the suspended hood that lower end is square body.This kind of suspended hood claims again umbrella hood, tip section for circular to lower end, fade to square.This kind of its shape of suspended hood determines that its air draught wind speed is in the inhomogeneities of section, and centre wind speed is larger, and the space wind speed of four wall lower semisection intersections is minimum, and forms air turbulence, thereby affects the effect of dedusting.
Summary of the invention
The utility model is for the technical deficiency of above-mentioned existence, aim to provide a kind of in humidity discharging, dust pelletizing system, the negative-pressure dust suction hood that dust absorbing efficiency is high.
For solving the problems of the technologies described above, the utility model negative-pressure air-suction cover adopts following technical scheme: it is characterized in that: air draught cover body (1) is that to be the round table-like lower end that fades to be square hollow cover body in a upper end, two spherical structures of one are fixed in the inner central area of air draught cover body (1) by two aerofoil profiles in left and right (4), described in it, two spherical structures are mutually fastened and form by top sphere orifice plate (2) and bottom sphere orifice plate (3), and the sphere orifice plate of top sphere orifice plate (2) or bottom sphere orifice plate (3) has several through holes.
The main apparent direction of sphere of described top sphere orifice plate (2) be protruding to, the main apparent direction of sphere of bottom sphere orifice plate (3) be recessed to, the two is combined into inside is two spherical structures of hollow.
The radius of the radian of described middle and upper part sphere orifice plate (2) or each sphere orifice plate of bottom sphere orifice plate (3) is to become gradually from top to bottom large.
In described two spherical structures, the diameter dimension of sphere orifice plate is installed 1/3～2/3 of air draught cover body (1) cross section inside dimension for it.
Through-hole diameter on described each sphere orifice plate is 0.5mm～30mm.
The through hole on the spherical cambered surface plate surface of described pair of spherical structure is asymmetric shape, and the through-hole diameter on upper and lower spherical cambered surface surface is relative and unequal, and the upper lower through-hole center on spherical cambered surface surface is not on same vertical line.
Operation principle: the two spherical structures that are arranged on air draught cover body 1 inside center region can increase to a certain extent the resistance in air draught cover body 1 inside center region but not block the intake of central area, go back the air quantity in region, shunt centre to the two side portion of air draught cover body 1 inside simultaneously, thereby make the air quantity that carries out in the same cross section of air draught cover body 1 inside keep evenly, greatly strengthening the effect of humidity discharging, dedusting.
The utility model beneficial effect: can effectively improve the practical application effect that due to air turbulence affect of existing suspended hood in dust pelletizing system; There is the air quantity at place, the inner inlet scoop of pair sphere hole plate integrated structure energy uniform air sucking covers up and down, effectively strengthen the effect of dedusting.
Accompanying drawing explanation
Fig. 1 is the front view of the utility model negative-pressure air-suction cover;
Fig. 2 is the upward view of the utility model negative-pressure air-suction cover;
Fig. 3 is the enlarged drawing of two main apparent directions of spherical structure.
In figure: 1-air draught cover body; 2-top sphere orifice plate; 3-bottom sphere orifice plate; 4-aerofoil profile; 5-through hole; 6-circle is outputed air port; 7-square air inlet.
The specific embodiment
Below in conjunction with embodiment shown in the drawings, the utility model is once described in detail, wherein described in this description " on ", D score position relationship respectively the upper and lower shown in respective figure 1 to.
Shown in accompanying drawing 1,2, the utility model discloses a kind of humidity discharging, dedusting suspended hood, comprise: air draught cover body 1 upper end is round platform, air draught cover body 1 lower end is square body, in the middle of round platform and square body, be gradual change, air draught cover body 1 bosom region a two spherical structure is housed; Connect air draught cover body 1 and top sphere orifice plate 2 or bottom sphere orifice plate 2 wing former 3, be arranged at the through hole 5 of top sphere orifice plate 2 or bottom sphere orifice plate 2, connect the airduct of air draught cover body 1 upper circular air outlet and outside air draft system.
Two spherical structure diameters at utility model top sphere orifice plate 2 or bottom sphere orifice plate 2 compositions are 1/2 of installation air draught cover body 1 bottom square air inlet cross section inwall size.
The radius of the radian of each sphere orifice plate is to become gradually from top to bottom large.
On each sphere orifice plate, through-hole diameter is along with the radius of the radian of sphere orifice plate becomes large from top to bottom gradually, in each sphere orifice plate, through-hole diameter layering fades to 30mm from 0.5mm, reason is that the centre of arcuation sphere orifice plate is over against air port, wind-force is larger, and through-hole diameter is a little bit smaller, favourable minimizing intake, more approach the periphery of arcuation sphere hole plate, wind-force is tangentially and slips into, through-hole diameter more greatly, favourable increase intake.The through-hole diameter on upper and lower spherical cambered surface surface is relative and unequal, the upper lower through-hole center on its upper and lower spherical cambered surface surface is not on same vertical line, and object is also to make way for upper and lower two sphere hole plate integrated structures to realize that the wind speed of place, inlet scoop horizontal section of suspended hood is even, blast is constant.
When negative-pressure air-suction, wind first enters the inside of air draught cover body 1 from the air draught cover body 1 square air inlet in bottom, the bottom sphere orifice plate 3 of two spherical structures that wind is mounted blocks, wherein a part of wind enters two spherical structure internal cavities from bottom sphere orifice plate 3 through holes, again from top sphere orifice plate 2 sphere through holes equably out, finally from air draught cover body 1 upper circular exit; Another part wind is blocked by the sphere orifice plate of bottom sphere orifice plate 3, along bottom sphere orifice plate 3, is distributed to equably spherical plate surrounding, then along the spherical plate surrounding surrounding sidewall of air draught cover body 1 inside (from), flows to the round exit on air draught cover body 1 top.Thereby guarantee the goal of the invention that wind speed is even, blast is constant in every layer of cross section of level, place, the inner inlet scoop of air draught cover body 1.
Above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model spirit change or modify, within all should being encompassed in protection domain of the present utility model.
Claims (6)
1. a negative-pressure air-suction cover, is characterized in that: air draught cover body (1) is that to be the round table-like lower end that fades to be square hollow cover body in a upper end, and the inner central area of air draught cover body (1) is fixed one by two aerofoil profiles in left and right (4)
'stwo spherical structures, described in it, two spherical structures are mutually fastened and form by top sphere orifice plate (2) and bottom sphere orifice plate (3), and the sphere orifice plate of top sphere orifice plate (2) or bottom sphere orifice plate (3) has several through holes.
2. negative-pressure air-suction cover according to claim 1, is characterized in that: the sphere of described top sphere orifice plate (2) be protruding to, the sphere of bottom sphere orifice plate (3) be recessed to, the two is combined into inside is two spherical structures of hollow.
3. negative-pressure air-suction cover according to claim 1, is characterized in that: in described top sphere orifice plate (2) or bottom sphere orifice plate (3), the radius of the radian of each sphere orifice plate is to become gradually from top to bottom large.
4. negative-pressure air-suction cover according to claim 1, is characterized in that: in described two spherical structures, the diameter dimension of sphere orifice plate is installed 1/3～2/3 of air draught cover body (1) cross section inside dimension for it.
5. a kind of negative-pressure air-suction cover according to claim 1, is characterized in that: the through-hole diameter on described each sphere orifice plate is 0.5mm～30mm.
6. a kind of negative-pressure air-suction cover according to claim 1, it is characterized in that: the through hole on the spherical cambered surface plate surface of described pair of spherical structure is asymmetric shape, the through-hole diameter that is upper and lower spherical cambered surface surface is relative and unequal, and the upper lower through-hole center on spherical cambered surface surface is not on same vertical line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420383610.XU CN203972442U (en) | 2014-07-13 | 2014-07-13 | A kind of negative-pressure air-suction cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420383610.XU CN203972442U (en) | 2014-07-13 | 2014-07-13 | A kind of negative-pressure air-suction cover |
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| Publication Number | Publication Date |
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| CN203972442U true CN203972442U (en) | 2014-12-03 |
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| CN201420383610.XU Active CN203972442U (en) | 2014-07-13 | 2014-07-13 | A kind of negative-pressure air-suction cover |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104056838A (en) * | 2014-07-13 | 2014-09-24 | 红塔烟草(集团)有限责任公司 | Negative pressure air drafting hood |
-
2014
- 2014-07-13 CN CN201420383610.XU patent/CN203972442U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104056838A (en) * | 2014-07-13 | 2014-09-24 | 红塔烟草(集团)有限责任公司 | Negative pressure air drafting hood |
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