CN207756591U - Speed governing cover mouth for gas collection - Google Patents
Speed governing cover mouth for gas collection Download PDFInfo
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- CN207756591U CN207756591U CN201721769972.2U CN201721769972U CN207756591U CN 207756591 U CN207756591 U CN 207756591U CN 201721769972 U CN201721769972 U CN 201721769972U CN 207756591 U CN207756591 U CN 207756591U
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- China
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- orifice plate
- cover mouth
- hole
- ventilation hole
- speed governing
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Abstract
The utility model discloses a kind of speed governing cover mouths for gas collection, including cover mouth skeleton, fixed orifice plate and removable orifice plate；The fixed orifice plate is fixed on the cover mouth skeleton, has the first ventilation hole；Being set on cover mouth skeleton for the removable orifice plate sliding, has the second ventilation hole that can be overlapped with first ventilation hole.The utility model is easy to use, can effectively adjust the speed of exhaust gas trapping, improves the efficiency of exhaust gas trapping；It is acted under complicated operating mode more prominent.
Description
Technical field
The utility model is related to gas collection cap vocal imitation skill fields, and in particular to a kind of speed governing cover for gas collection
Mouthful.
Background technology
Gas collection cap is the collection device of waste gas cleaning system pollution sources, can dust and gaseous contamination source be imported purification
System, while preventing it to workshop and Atmospheric Diffusion, it pollutes.Its performance has the technical-economic index of purification system
Directly influence.Due to the form of the difference of pollution sources device structure and production operation technique, gas gathering mask mouth be it is diversified,
But the cover mouth of gas flow rate can be changed and adjust at present by having no.
Invention content
For the defects in the prior art, the purpose of this utility model is to provide one kind capable of adjusting exhaust gas trapping one's intention as revealed in what one says
Speed improves the speed governing cover mouth for gas collection of exhaust gas arresting efficiency.
To achieve the above object, the utility model uses following technical scheme：
A kind of speed governing cover mouth for gas collection, it is characterised in that：Including cover mouth skeleton, fixed orifice plate and movable span
Plate；The fixed orifice plate is fixed on the cover mouth skeleton, has the first ventilation hole；The removable orifice plate sliding is set to cover
On mouth skeleton, there is the second ventilation hole that can be overlapped with first ventilation hole.
The speed governing cover mouth for gas collection, wherein：The removable orifice plate is equipped with the first limit hole and second
Limit hole, sets that there are one mounting holes in the fixed orifice plate；First limit hole can divulge information in the first ventilation hole and second
It is overlapped with the mounting hole when hole is completely superposed；Second limit hole can be in the first ventilation hole and the second ventilation hole dislocation weight
It is overlapped with the mounting hole when conjunction；First limit hole can mutually be fixed with mounting hole by the first active connection；It is described
Second limit hole can mutually be fixed with mounting hole by the second active connection.
The speed governing cover mouth for gas collection, wherein：Adjustment knob there are one being set in the removable orifice plate.
The speed governing cover mouth for gas collection, wherein：The both sides of the cover mouth skeleton are equipped with ring flange.
The speed governing cover mouth for gas collection, wherein：The gross area of first ventilation hole accounts for the fixed orifice plate gross area
Half, the gross area of the second ventilation hole accounts for the half of the removable orifice plate gross area.
The speed governing cover mouth for gas collection, wherein：The cover mouth skeleton is in square tube shape or cylindrical shape.
Compared with prior art, the beneficial benefit of the utility model is：It is easy to use, it can effectively adjust exhaust gas trapping
Speed, improve exhaust gas trapping efficiency；It is acted under complicated operating mode more prominent.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the usage state diagram of removable orifice plate and fixed orifice plate.
Fig. 3 is removable orifice plate and fixed orifice plate structural schematic diagram.
Fig. 4 is cover mouth flange arrangement figure.
Reference sign：1- gas gathering masks；2- speed governing cover mouths；3- ring flanges；4- cover mouth skeletons；5- fixed orifice plates；6- lives
Dynamic orifice plate；7- fixed orifice plate fixing ends；8- mounting holes；9- removable orifice plate fixing ends；10- adjustment knobs；The first limit holes of 11-；12-
First active connection；The second limit holes of 13-；The second active connections of 14-；The first ventilation holes of 15-；The second ventilation holes of 16-.
Specific implementation mode
As shown in Figure 1, being mounted on gas gathering mask 1 by ring flange 3 when speed governing cover mouth 2 uses comprising one section of cover mouth bone
Frame 4, fixed orifice plate 5 and removable orifice plate 6；Fixed orifice plate 5 is fixed on a flange side of cover mouth skeleton 4, and removable orifice plate 6 is installed
In the slideway (not drawn in figure) for being close to fixed orifice plate 5；Cover mouth skeleton 4 is in square tube shape or cylindrical shape；Fixed orifice plate 5 and work
Dynamic orifice plate 6 is parallel and sets, and size is identical.
As shown in Fig. 2, fixed orifice plate 5 has the first ventilation hole 15；Removable orifice plate 6 has the second ventilation hole 16；Movable span
When plate 6 slides, the second ventilation hole 16 can be completely overlapped with the first ventilation hole 15, or dislocation overlapping；First ventilation hole 15 it is total
Area accounts for the half of 5 gross area of fixed orifice plate, the gross area of the second ventilation hole 16 account for 6 gross area of removable orifice plate two/
One.Two orifice plates are completely overlapped, and draught area is the half of hole plate suqare；Two orifice plate dislocation overlappings, draught area will
Less than the gross area in the hole of orifice plate, at this moment the wind speed of speed governing cover mouth can improve.
As shown in figure 3, removable orifice plate fixing end 9 is equipped with the first limit hole 11 and the second limit hole 13, fixed orifice plate is solid
Mounting hole 8 there are one being set on fixed end 7；First limit hole 11 can be when the first ventilation hole 15 and the second ventilation hole 16 be completely superposed
It is overlapped with mounting hole 8；Second limit hole 13 can be when the dislocation of the first ventilation hole 15 and the second ventilation hole 16 overlaps and mounting hole 8
It overlaps；First limit hole 11 can be fixed with mounting hole 8 by 12 phase of the first active connection；Second limit hole 13 and mounting hole
8 can be fixed by 14 phase of the second active connection.It is set in removable orifice plate 6 there are one adjustment knob 10, operator can be by adjusting
Button is finely tuned to adjust the position of removable orifice plate 6.
First active connection 12 and the second active connection 14 can be threaded connectors.
Applicating example：The generation point of exhaust gas point in order to control, in the case of the flow of cover mouth and location determination, according to speed governing
The distance at mouth plane to control point determines the wind speed of speed governing mouth.For example distance is 2000mm, then the wind speed of speed governing mouth is not less than 2m/
S, it is ensured that exhaust gas is completed from generating to being collected in one second, and arresting efficiency is improved.
The speed calculation formula of speed governing mouth is as follows：
V=S/K*Q/ (3600S)
Wherein S：Speed governing open area；K：The gross area in the hole of orifice plate；Q：The flow of cover mouth.
Claims (6)
1. a kind of speed governing cover mouth for gas collection, it is characterised in that：
Including cover mouth skeleton, fixed orifice plate and removable orifice plate；The fixed orifice plate is fixed on the cover mouth skeleton, has the
One ventilation hole；Being set on cover mouth skeleton for the removable orifice plate sliding, has can be overlapped with first ventilation hole second
Ventilation hole.
2. the speed governing cover mouth according to claim 1 for gas collection, it is characterised in that：
The removable orifice plate is equipped with the first limit hole and the second limit hole, sets that there are one mounting holes in the fixed orifice plate；Institute
Stating the first limit hole can overlap when the first ventilation hole is completely superposed with the second ventilation hole with the mounting hole；Second limit
Position hole can be overlapped when the first ventilation hole is overlapped with the dislocation of the second ventilation hole with the mounting hole；First limit hole with it is solid
Determining hole can mutually be fixed by the first active connection；Second limit hole can pass through the second active connection with mounting hole
It is mutually fixed.
3. the speed governing cover mouth according to claim 1 for gas collection, it is characterised in that：
Adjustment knob there are one being set in the removable orifice plate.
4. the speed governing cover mouth according to claim 1 for gas collection, it is characterised in that：
The both sides of the cover mouth skeleton are equipped with ring flange.
5. the speed governing cover mouth according to claim 1 for gas collection, it is characterised in that：
The gross area of first ventilation hole accounts for the half of the fixed orifice plate gross area, and the gross area of the second ventilation hole accounts for removable orifice plate
The half of the gross area.
6. the speed governing cover mouth according to claim 1 for gas collection, it is characterised in that：
The cover mouth skeleton is in square tube shape or cylindrical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721769972.2U CN207756591U (en) | 2017-12-18 | 2017-12-18 | Speed governing cover mouth for gas collection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721769972.2U CN207756591U (en) | 2017-12-18 | 2017-12-18 | Speed governing cover mouth for gas collection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207756591U true CN207756591U (en) | 2018-08-24 |
Family
ID=63186896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721769972.2U Active CN207756591U (en) | 2017-12-18 | 2017-12-18 | Speed governing cover mouth for gas collection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207756591U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115289538A (en) * | 2022-08-23 | 2022-11-04 | 曼胡默尔生命科学与环境控股新加坡私人有限公司 | Air conditioning system and air supply outlet assembly for same |
-
2017
- 2017-12-18 CN CN201721769972.2U patent/CN207756591U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115289538A (en) * | 2022-08-23 | 2022-11-04 | 曼胡默尔生命科学与环境控股新加坡私人有限公司 | Air conditioning system and air supply outlet assembly for same |
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