CN208734611U - A kind of two-way air extractor - Google Patents
A kind of two-way air extractor Download PDFInfo
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- CN208734611U CN208734611U CN201821068707.6U CN201821068707U CN208734611U CN 208734611 U CN208734611 U CN 208734611U CN 201821068707 U CN201821068707 U CN 201821068707U CN 208734611 U CN208734611 U CN 208734611U
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- spray orifice
- inner sleeve
- plenum chamber
- outer tube
- annular plenum
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Abstract
The utility model provides a kind of two-way air extractor, including compressed air line, the inner tube set and outer tube sleeve being arranged inside and outside, two mutually independent annular sealed spaces are formed between inner tube set and outer tube sleeve, respectively first annular plenum chamber and the second annular plenum chamber, be equipped in inner tube set axially through injection airflow channel, the tube wall of inner tube set is equipped with the first spray orifice group and the second spray orifice group, first spray orifice group includes multiple first spray orifices, multiple first spray orifices are connected to first annular plenum chamber and injection airflow channel, second spray orifice group includes multiple second spray orifices, the annular plenum chamber of multiple second spray orifice connections second and injection airflow channel, compressed air line includes the first pipeline and the second pipeline, it is connected to respectively with first annular plenum chamber and the second annular plenum chamber.The utility model is set there are two annular plenum chamber, need to only control a compressed air stream annular plenum chamber thereto, and under the conditions of same gas consumption, the utility model suction force is bigger, and injection ratio is higher.
Description
Technical field
The utility model relates to a kind of air extractor more particularly to a kind of two-way air extractors.
Background technique
Under normal circumstances, the not smokable flammable explosive gas of the blower with impeller, inconvenient gas-solid of the suction containing particulate matter are mixed
It closes object, cannot be used in high temperature applicationss, unsuitable two-way ventilating ventilation, especially containing the flammable explosive gas of particulate matter.
The patent of Publication No. CN101592169A proposes a kind of Pneumatic suction fan, can solve the blower of electronic impeller
Indeterminable problem, because of the design in design and structure, there are the following problems in specific application: 1) not being suitable for containing
There is the flammable explosive gas of particulate matter to aspirate, because the compressed gas of jet flow groove injection, close to velocity of sound, the high speed cyclone of formation turns
Speed is exceedingly fast, and the particulate matter in suction airstream reaches vortex chamber wall surface, in this way, high speed rotation in the effect of cyclone centrifugal force quickly
Large particle and wall friction be easy to produce spark, easy igniting gas；2) unsuitable two-way suction, if two-way suction,
It needs to install two opposite Pneumatic suction fans of inspiratory direction, but also needs two valves, increase operation difficulty, pneumatic operated valve
Door is not closed completely in dusty circumstances, reduces the reliability of pneumatic fan application；If 3) docked using two Pneumatic suction fans,
Because there are the abrupt change of cross-section (inlet chamber outlet with vortex chamber entrance), not only resulted in structure particulate matter to abrupt-change cross section at
It hits, and causes flow field unsmooth, substantially reduce the performance of exhaust fan, energy consumption is multiplied.
The patent of Chinese Publication No. CN101592169 proposes a kind of Pneumatic air pump, the pumping mechanism and China
The patent document of CN101592169A is identical, is intended merely to increase sucking rate, increases annular partition, forms two stage jet.According to
It can carry out law of conservation, the sucking rate of Pneumatic air pump increases, and suction force (negative pressure of formation) accordingly declines, in some specific fields
It closes not applicable.
Therefore, the flammable explosive gas containing particulate matter is aspirated and is taken a breath, need new structural injection of calming the anger two-way
Extract system device.
Utility model content
In response to the deficiencies in the existing technology, the utility model provides a kind of two-way air extractor, is particularly suitable for containing
The suction and ventilation of the flammable explosive gas of particulate matter.
The utility model is to realize above-mentioned technical purpose by following technological means.
A kind of two-way air extractor, including compressed air line, the inner sleeve and outer tube that are arranged inside and outside；
Two mutually independent annular sealed spaces are formed between the outer wall of the inner sleeve and the inner wall of outer tube, respectively
For first annular plenum chamber and the second annular plenum chamber, be equipped in the inner sleeve axially through injection airflow channel, institute
State injection airflow channel and air communication, the tube wall of the inner sleeve is equipped with the first spray orifice group and the second spray orifice group, and described the
One spray orifice group includes multiple first spray orifices, and multiple first spray orifices are connected to first annular plenum chamber and injection airflow channel, institute
Stating the second spray orifice group includes multiple second spray orifices, and the annular plenum chamber of multiple second spray orifice connections second and injection air-flow are logical
Road；
The compressed air line includes the first pipeline and the second pipeline, and first pipeline and first annular plenum chamber connect
Logical, second pipeline is connected to the second annular plenum chamber.
Preferably, first pipeline is equipped with the first valve, and second pipeline is equipped with the second valve.
Preferably, the spray orifice number in the first spray orifice group and the second spray orifice group is no less than 3.
Preferably, multiple first spray orifices are uniformly distributed circumferentially centered on the axis of inner sleeve, and multiple described
Two spray orifices are uniformly distributed circumferentially centered on the axis of inner sleeve.
Preferably, the axis of first spray orifice and inner sleeve forms the first injection angle, second spray orifice and inner sleeve
The injection direction of axis formation the second injection angle of pipe, first spray orifice and the second spray orifice is towards the interposition of inner sleeve
It sets.
Preferably, first spray orifice and the second spray orifice are straight hole.
Preferably, it is equipped with jet pipe in first spray orifice and the second spray orifice, the jet pipe is gradual shrinkage or diffused
Or scaling type.
Preferably, the outer tube include the first outer tube and the second outer tube, one end of first outer tube with it is interior
One end of casing is mutually screwed on, and one end of the second outer tube is mutually screwed on the other end of inner sleeve, the inner wall of first outer tube
First annular plenum chamber is formed with inner sleeve pipe outer wall, forms second between the inner wall of second outer tube and the outer wall of inner sleeve
Annular plenum chamber, the first outer tube other end are equipped with the first cavity of connection injection airflow channel and air, the second housing
The other end of pipe is equipped with the second cavity of connection injection airflow channel and air.
Preferably, the diameter at injection airflow channel both ends is gradually increased, and is in diffusion type.
The utility model has the beneficial effects that
1) the utility model sets that there are two annular plenum chambers, and only need to controlling compressed air stream, an annular is calmed the anger thereto
Room can obtain selected pumping direction；
2) the utility model uses the annular plenum chamber of large volume, is arranged between annular plenum chamber and injection airflow channel
The first spray orifice and the second spray orifice of tilting, significantly reduce the frictional resistance of air-flow.
3) jet pipe is set in the spray orifice of the utility model, and jet pipe can be contraction type or diffusion type or pantographic, pass through
The form for changing jet pipe, realizes various pumping functions.
4) the utility model injection airflow channel is unobstructed, and under the conditions of same gas consumption, suction force is bigger, and injection ratio is higher, makes
It is more excellent to obtain suction performance.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram one of two-way air extractor described in the utility model.
Fig. 2 is a kind of structural schematic diagram two of two-way air extractor described in the utility model.
In figure: the first outer tube of 1-, the first air inlet of 101-, 2- inner sleeve, the first spray orifice of 201-, the second spray orifice of 202-,
The second outer tube of 3-, the second air inlet of 301-, 4- gasket, 5- compressed air, 6- compressed air pipe, the first valve of 7-, 8-
The first annular plenum chamber of two valves, 9-, 10- second annular plenum chamber, the first cavity of 11-, the second cavity of 12-, 13- jet pipe.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is further described the utility model, but the guarantor of the utility model
Shield range is not limited to this.
As shown in Figure 1, a kind of two-way air extractor described in the utility model, including compressed air line 6, it is arranged inside and outside
Inner sleeve 2 and outer tube.
Outer tube includes the first outer tube 1 and the second outer tube 3, and the first outer tube 1 and the second outer tube 3 are multi-diameter shaft
Shape, one end of the first outer tube 1 are mutually screwed on one end of inner sleeve 2, one end of the second outer tube 3 and the other end of inner sleeve 2
Mutually it is screwed on, the annular sealed space formed between 2 outer wall of inner wall and inner sleeve of the first outer tube 1 is first annular plenum chamber 9,
Annular sealed space between the inner wall of second outer tube 3 and the outer wall of inner sleeve 2 forms the second annular plenum chamber 10.Inner sleeve
It is equipped with the gasket 4 of circular ring shape between 2 two end faces and the first outer tube 1 and the step surface of the second outer tube 3, makes the first ring
Shape plenum chamber 9 and the second annular plenum chamber 10 are more closed.
Be equipped in inner sleeve 2 axially through injection airflow channel, injection airflow channel interlude is straight pipe, diameter
The diameter of 50mm, injection airflow channel both ends are gradually increased, and are in diffusion type.The other end of the other end of first outer tube 1 is all provided with
There is the first cavity 11 of connection injection airflow channel and air, the other end of the second outer tube 3 is equipped with connection injection airflow channel
With the second cavity 12 of air, the diameter of the first cavity 11 and the second cavity 12 and the diameter of corresponding injection airflow channel end
It is identical.
The tube wall of inner sleeve 2 is equipped with the first spray orifice group and the second spray orifice group, and the first spray orifice group includes multiple first spray orifices
101, the first spray orifice 201 is connected to first annular plenum chamber 9 and injection airflow channel, and multiple first spray orifices 201 are with the axis of inner sleeve 2
It is uniformly distributed circumferentially centered on line, the second spray orifice group includes multiple second spray orifices 301, the second annular of the second spray orifice 301 connection
Plenum chamber 10 and injection airflow channel, multiple second spray orifices 301 are uniformly distributed circumferentially centered on the axis of inner sleeve 2.
The axis of first spray orifice 201 and inner sleeve 2 forms the first injection angle, and first sprays angle towards inner sleeve 2
The axis of one end, the second spray orifice 202 and inner sleeve 2 forms the second injection angle, and second sprays angle towards the another of inner sleeve 2
End, so that the injection direction of the first spray orifice 201 and the second spray orifice 202 is towards the middle position of inner sleeve 2.
As shown in Fig. 2, the first spray orifice 201 and the second spray orifice 202 are straight hole, in the first spray orifice 201 and the second spray orifice 202
It is equipped with jet pipe 13, jet pipe 13 is gradual shrinkage or diffused or scaling type, according to the spray of pumping effect selection suitable type
Pipe 13 realizes various pumping functions.
The first air inlet 101 is equipped at the corresponding outer tube 1 of first annular plenum chamber 9, the second annular plenum chamber 10 is corresponding
Outer tube 1 at be equipped with the second air inlet 301, compressed air line 6 includes the first pipeline and the second pipeline, the first pipeline and the
One annular plenum chamber 9 is connected to, and the second pipeline is connected to the second annular plenum chamber 10, and the first pipeline is equipped with the first valve 7, and second
Pipeline is equipped with the second valve 8.
The utility model is a kind of course of work of two-way air exhauster device:
Valve 7 is opened, valve 8 is closed, first pipeline of the compressed air 5 through compressed air line 6 passes through valve 7, air inlet
Mouth 101 enters annular plenum chamber 9, is then sprayed by the first spray orifice 201 on inner sleeve 2 to the intermediate direction of injection airflow channel
It penetrates, due to the injection effect of high speed jet-stream wind, the air-flow at the first cavity 11 is aspirated by jet-stream wind, to the second cavity 12
Place's flowing, suction time are determined according to technique concrete condition.
Similarly, valve 7 is closed, valve 8 is opened, compressed air 5 is entered through pipe-line system 6 by valve 8, air inlet 301
Air-flow at annular second cavity 12 is aspirated by jet-stream wind, to the first cavity 11 at flow.By making to spray in the first spray orifice group
The number in hole is different with the number of the second spray orifice group internal spray hole, can satisfy different pumping requirements.
In the present embodiment, the number of the first spray orifice 201 is 5, diameter 3mm, and the number of the second spray orifice 301 is 7, directly
Diameter is 3mm, and the pressure 0.2MPa of compressed air 5, the sucking rate of the first spray orifice group is 510m3/h, the sucking rate of the second spray orifice group
For 630m3/h.
The utility model is particularly suitable for the suction and ventilation of the flammable explosive gas containing particulate matter, and the gas of the prior art
Dynamic exhaust fan can not directly cope with the suction and ventilation of flammable explosive gas.
Embodiment is the preferred embodiment of the utility model, but the utility model is not limited to the above embodiment,
Without departing substantially from the substantive content of the utility model, what those skilled in the art can make any obviously changes
The protection scope of the utility model is belonged into, replacement or modification.
Claims (9)
1. a kind of two-way air extractor, which is characterized in that including compressed air line (6), the inner sleeve (2) being arranged inside and outside and outer
Casing；
Two mutually independent annular sealed spaces are formed between the outer wall of the inner sleeve (2) and the inner wall of outer tube (1), point
Not Wei first annular plenum chamber (9) and the second annular plenum chamber (10), be equipped in the inner sleeve (2) axially through injection
Airflow channel, the tube wall of the inner sleeve (2) are equipped with the first spray orifice group and the second spray orifice group, and the first spray orifice group includes more
A first spray orifice (201), multiple first spray orifices (201) are connected to first annular plenum chamber (9) and injection airflow channel, described
Second spray orifice group includes multiple second spray orifices (202), the annular plenum chambers (10) of multiple second spray orifices (202) connections second and
Injection airflow channel；
The compressed air line (6) includes the first pipeline and the second pipeline, first pipeline and first annular plenum chamber (9)
Connection, second pipeline are connected to the second annular plenum chamber (10).
2. two-way air extractor according to claim 1, which is characterized in that first pipeline is equipped with the first valve
(7), second pipeline is equipped with the second valve (8).
3. two-way air extractor according to claim 1, which is characterized in that in the first spray orifice group and the second spray orifice group
Spray orifice number be no less than 3.
4. two-way air extractor according to claim 1, which is characterized in that multiple first spray orifices (201) are with inner sleeve
It is uniformly distributed circumferentially centered on the axis of pipe (2), multiple second spray orifices (202) are centered on the axis of inner sleeve (2)
It is uniformly distributed circumferentially.
5. two-way air extractor according to claim 4, which is characterized in that first spray orifice (201) and inner sleeve (2)
Axis form the first injection angle, the axis of second spray orifice (202) and inner sleeve (2) forms the second injection angle, institute
The injection direction of the first spray orifice (201) and the second spray orifice (202) is stated towards the middle position of inner sleeve (2).
6. two-way air extractor according to claim 1, which is characterized in that first spray orifice (201) and the second spray orifice
It (202) is straight hole.
7. two-way air extractor according to claim 6, which is characterized in that first spray orifice (201) and the second spray orifice
(202) it is equipped with jet pipe (13) in, the jet pipe (13) is gradual shrinkage or diffused or scaling type.
8. two-way air extractor according to claim 1, which is characterized in that the outer tube includes the first outer tube (1)
With the second outer tube (3), one end of first outer tube (1) and one end of inner sleeve (2) are mutually screwed on, the second outer tube (3)
One end and the other end of inner sleeve (2) be mutually screwed on, the inner wall and inner sleeve (2) outer wall of first outer tube (1) form the
One annular plenum chamber (9), forms the second annular between the inner wall of second outer tube (3) and the outer wall of inner sleeve (2) and calms the anger
Room (10), the first outer tube (1) other end is equipped with the first cavity (11) of connection injection airflow channel and air, outside second
The other end of casing (3) is equipped with the second cavity (12) of connection injection airflow channel and air.
9. two-way air extractor according to claim 1, which is characterized in that the diameter at injection airflow channel both ends by
It is cumulative big, it is in diffusion type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821068707.6U CN208734611U (en) | 2018-07-06 | 2018-07-06 | A kind of two-way air extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821068707.6U CN208734611U (en) | 2018-07-06 | 2018-07-06 | A kind of two-way air extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208734611U true CN208734611U (en) | 2019-04-12 |
Family
ID=66026697
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821068707.6U Active CN208734611U (en) | 2018-07-06 | 2018-07-06 | A kind of two-way air extractor |
Country Status (1)
| Country | Link |
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| CN (1) | CN208734611U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799210A (en) * | 2018-07-06 | 2018-11-13 | 江苏大学 | A kind of two-way air extractor |
-
2018
- 2018-07-06 CN CN201821068707.6U patent/CN208734611U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799210A (en) * | 2018-07-06 | 2018-11-13 | 江苏大学 | A kind of two-way air extractor |
| CN108799210B (en) * | 2018-07-06 | 2024-05-14 | 江苏大学 | Two-way air extractor |
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