CN207152915U - A kind of self-priming air foam rifle - Google Patents
A kind of self-priming air foam rifle Download PDFInfo
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- CN207152915U CN207152915U CN201721053155.7U CN201721053155U CN207152915U CN 207152915 U CN207152915 U CN 207152915U CN 201721053155 U CN201721053155 U CN 201721053155U CN 207152915 U CN207152915 U CN 207152915U
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- foam
- ejector
- self
- air
- chamber
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Abstract
The utility model discloses a kind of self-priming air foam rifle, its foam injection chamber is located between air entry and foaming cylinder, and current inlet is located at immediately below air entry and relative air entry is obliquely installed；An ejector is provided with above gun body exocoel, ejector is provided with ejector ejecting port, foam dope suction inlet, ejector diffusing opening；Current inlet is connected with the annular water flow chamber being arranged on the outside of foam injection chamber, and annular water flow chamber is connected by bypass waterway with ejector ejecting port；Ring uniform intervals are laid with multiple hand-holes in the middle part of foam injection cavity wall, and hand-hole is connected by mixing liquid pipeline with ejector diffusing opening.The utility model can mix water, air, fire foam by a certain percentage, injection low power number, far firing range, stable air foam agent, and because the utility model kick is small, it is easier to operational control, accuracy of spray are high.
Description
Technical field
The utility model belongs to fire-fighting machinery design and manufacturing technology field, especially belongs to a kind of fire-fighting extinguishing chemical spray gun
Design and manufacture, more particularly to a kind of self-priming air foam rifle.
Background technology
Fire extinguishing spray gun is the major function equipment of fire extinguishing system, and existing air foam spray gun, coefficient of foaming is low, bubble
Foam mixing can not meet needs.In air, froth fire extinguishing system, gas-liquid mixed, the abundant Degree of Accord Relation of liquid liquid mixing are to foam
The coefficient of foaming of extinguishing chemical, coefficient of foaming are the important indicators of system fire extinguishing effectiveness, and the jet length of the mixed liquor after foaming
It is the important performance indexes of system fire suppression applications ability.
Coefficient of foaming, mixing efficiency, jet length are designed with pass with fire extinguishing spray gun, particularly by gas-liquid mixed, foam
Mixed function is concentrated and is designed in spray gun structure, while can also meet the needs of jet length, the structure design ten for spray gun of putting out a fire
Divide important.
The content of the invention
The purpose of this utility model is to be directed to coefficient of foaming existing for prior art is low, range is near, foam stability is poor etc.
Problem, there is provided a kind of self-priming air foam rifle, the foam-making branch are that one kind can be by water, air, fire foam
Three mixes by a certain percentage, and injection low power number, the foam-making branch of the good air foam agent of stability, kick is small, more
Easily operated control, accuracy of spray are higher.
To achieve the above object, the technical solution adopted in the utility model is：A kind of self-priming air foam rifle, bag
Current inlet, gun body exocoel and foaming cylinder are included, the outer intracavitary of the gun body is provided with air entry, foam injection chamber, the air-breathing
With foaming cylinder on the same axis, the foam injection chamber is located between air entry and foaming cylinder mouth, the current inlet position
Immediately below air entry and relative air entry is obliquely installed；An ejector is provided with above the gun body exocoel, on the ejector
Provided with ejector ejecting port, foam dope suction inlet, ejector diffusing opening；The current inlet is with being arranged at foam injection chamber
The annular water flow chamber connection in outside, the annular water flow chamber are connected by bypass waterway with ejector ejecting port；The foam note
Enter ring uniform intervals in the middle part of cavity wall and be laid with multiple hand-holes, the hand-hole is by mixing liquid pipeline and ejector diffusing opening
Connection.
Preferably, the current inlet axis and air entry axis angle α=50 °.
Preferably, the hand-hole has 6.
Further, water injection angle is provided between the current inlet and annular water flow chamber, the water sprays angle
Formed for tilting ring chamber or by multiple uniform rings around the inclination injection channel that foam injection chamber is set.
Further, the axial centre extended line of the water injection angle intersects at axis centre and the position of foam injection chamber
In the front end of foam injection chamber.
Further, it is provided with the current inlet into water polo valve.
Preferably, the water injection angle axis and air entry axis angle β are 15~35 °.
Preferably, the inclination injection channel has 10.
Further, the foaming cylinder nozzle is arranged with foaming cylinder sheath.
Further, gun barrel sheath is arranged with the middle part of the foaming cylinder, gun handle is provided with below the gun barrel sheath.
Further, the pressure that supplied water outside at the current inlet is 0.4Mpa~1.2Mpa.
Compared with prior art, the beneficial effects of the utility model are：1st, the utility model utilizes ejector and multiple notes
Enter hole and form negative pressure Mixed Zone at the middle part of foam injection chamber, can be fully mixed by a certain percentage by water, air, fire foam
Close, eject the fire extinguishing air foam of coefficient of foaming >=15 times, and foam stabilization, far firing range, fire-fighting efficiency are higher；2nd, this practicality
New design current inlet is obliquely installed with respect to air entry, can slow down hydraulically-formed kick significantly, reduces fire extinguishing person's
Labor intensity so that accuracy of spray is higher；3rd, it is again negative pressuren zone that the utility model is injected in chamber in foam so that spray gun uses model
Enclose that wider, mixed proportion error is small, outer water supply is pressed in 0.4Mpa~1.2Mpa can normal use；4th, the utility model mixing dress
It is more succinct to put structure, it is easier to operate, control, while installation cost is reduced so that fire gun performance is more stable reliable.
Brief description of the drawings
Fig. 1 is the structural representation of the self-priming air foam rifle of the utility model；
Fig. 2 is the cross section structure diagram of the self-priming air foam rifle of the utility model；
Fig. 3 is the top view of the self-priming air foam rifle of the utility model；
Fig. 4 is the left view of the self-priming air foam rifle of the utility model；
In figure：1st, current inlet；2nd, gun body exocoel；3rd, foam cylinder；4th, air entry；5th, foam injection chamber；6th, ejector；
610th, ejector ejecting port；611st, foam dope suction inlet；612nd, ejector diffusing opening；7th, annular water flow chamber；8th, bypass waterway；
9th, hand-hole；10th, liquid pipeline is mixed；11st, water injection angle；12nd, water polo valve；13rd, foam cylinder sheath；14th, gun barrel sheath；15、
Gun handle.
Embodiment
Below in conjunction with the accompanying drawing in the utility model, the technical solution of the utility model is clearly and completely retouched
State, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole embodiments.Based on this
Embodiment in utility model, those of ordinary skill in the art obtained under the conditions of creative work is not made it is all its
Its embodiment, belong to the scope of the utility model protection.
As shown in figures 1-4, a kind of self-priming air foam rifle, including current inlet 1, gun body exocoel 2 and hair
Cylinder 3 is steeped, air entry 4, foam injection chamber 5 are provided with the gun body exocoel 2, the air entry 4 is with foaming cylinder 3 in same axis
On, the foam injection chamber 5 is located between air entry 4 and foaming cylinder 3, and the current inlet 1 is located at immediately below air entry 4
And relative air entry 4 is obliquely installed, and can so slow down hydraulically-formed kick, reduces the labor intensity of fire extinguishing person；It is described
The top of gun body exocoel 2 is provided with an ejector 6, and the ejector 6 is provided with ejector ejecting port 610, foam dope suction inlet
611st, ejector diffusing opening 612；The current inlet 1 connects with being arranged at the annular water flow chamber 7 in the outside of foam injection chamber 5,
The annular water flow chamber 7 is connected by bypass waterway 8 with ejector ejecting port 610；Ring is equal in the middle part of the foam injection wall of chamber 5
Even interval is laid with multiple hand-holes 9, and the hand-hole 9 is connected by mixing liquid pipeline 10 with ejector ejecting port 610.It is described
The uniform hand-hole 9 of ring, can obtain foams mix more uniform.The utility model utilizes ejector 6 and multiple hand-holes 9
Negative pressure Mixed Zone is formed at the middle part of foam injection chamber 5, water, air, fire foam are sufficiently mixed by a certain percentage, sprayed
Go out the fire extinguishing air foam of coefficient of foaming >=15 times, and foam stabilization, far firing range, fire-fighting efficiency are higher, solve existing air-breathing
The technical barriers such as type fixed froth installation coefficient of foaming is low, foam is unstable, range is near；Other the utility model mixing arrangement knot
Structure is more succinct, and is physically easier to perform, controls, can be while installation cost is reduced so that fire gun performance is more stable can
Lean on, the mixed proportion error between water air foam agent three is small.
Operation principle of the present utility model：High-velocity flow is from current inlet 1 successively by annular water flow chamber 7, bypass water
Road 8 flows through ejector 6, inhalation flow adjustably fire foam, then mixed liquor is ejected into foam by multiple hand-holes 9
Inject in chamber 5 so that foam injects 5 annular water jet of chamber and forms negative pressure Mixed Zone with gun body exocoel 2, and substantial amounts of air is inhaled
Enter, the multiply pressure mixed at high speed liquid that air sprays with hand-hole 9 sprays after foaming is hit in intersection along foaming cylinder 3
Put out a fire to ignition point.
As the preferred scheme of the utility model embodiment, the axis of current inlet 1 and the axis angle of air entry 4
α=50 °, hydraulically-formed kick is so greatly decomposed, reduced the labor intensity of fire extinguishing person.
As the preferred scheme of the utility model embodiment, the hand-hole 9 has 6, can be in negative pressure Mixed Zone
Form six strands of pressure mixed at high speed liquid so that fire foam is mixed evenly with water, air, and foaming is more rapidly stablized.
As the preferred scheme of the utility model embodiment, it is provided with into water polo valve 12, coordinates at the current inlet 1
Foam dope suction inlet 611 so that injection form dry and wet foam is adjustable manually.
As the further improvement of the utility model embodiment, set between the current inlet 1 and annular water flow chamber 7
There is water to spray angle 11, the water injection angle 11 is tilting ring chamber or injects what chamber 5 was set around foam by multiple uniform rings
Injection channel is tilted to form.It can so make bubbling efficiency higher.
As the further improvement of the utility model embodiment, the axial centre extended line phase of the water injection angle 11
Meet at the axis centre of foam injection chamber 5 and positioned at the front end of foam injection chamber 5.
As the preferred scheme of the utility model embodiment, the water injection axis of angle 11 presss from both sides with the axis of air entry 4
Angle beta is 15~35 °.
As the preferred scheme of the utility model embodiment, the inclination injection channel has 10.
As the further improvement of the utility model embodiment, the foaming nozzle of cylinder 3 is arranged with foaming cylinder sheath
13, for protecting spout, improve the service life of fire gun.
As the further improvement of the utility model embodiment, the middle part of foaming cylinder 3 is arranged with gun barrel sheath 14, institute
State the lower section of gun barrel sheath 14 and be provided with gun handle 15.Fire gun is set to be physically easier to perform, control.
The pressure that supplied water outside at the current inlet 1 is 0.4Mpa~1.2Mpa.
The utility model is mixed water with fire foam using bypass current combination ejector in proportion, and structure is simpler
It is clean, more convenient operation so that device use range is wider, and mixed proportion error is smaller, and extinguishing property is more stable reliable and puts out a fire
Efficiency high.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (10)
1. a kind of self-priming air foam rifle, including current inlet (1), gun body exocoel (2) and foaming cylinder (3), institute
State and air entry (4), foam injection chamber (5) are provided with gun body exocoel (2), the air entry (4) is with foaming cylinder (3) in same axis
On, the foam injection chamber (5) is located between air entry (4) and foaming cylinder (3), it is characterised in that the current inlet (1)
Immediately below air entry (4) and relative air entry (4) is obliquely installed；An ejector is provided with above the gun body exocoel (2)
(6), the ejector (6) is provided with ejector ejecting port (610), foam dope suction inlet (611), ejector diffusing opening
(612)；The current inlet (1) connects with the annular water flow chamber (7) being arranged on the outside of foam injection chamber (5), the annular
Current chamber (7) is connected by bypass waterway (8) with ejector ejecting port (610)；Ring is equal in the middle part of described foam injection chamber (5) wall
Even interval is laid with multiple hand-holes (9), and the hand-hole (9) is by mixing liquid pipeline (10) and ejector ejecting port (610)
Connection.
A kind of 2. self-priming air foam rifle according to claim 1, it is characterised in that the current inlet
(1) axis and air entry (4) axis angle α=50 °.
3. a kind of self-priming air foam rifle according to claim 1, it is characterised in that the hand-hole (9) has 6
It is individual.
A kind of 4. self-priming air foam rifle according to claim 1, it is characterised in that the current inlet
(1) water injection angle (11) is provided between annular water flow chamber (7), the water injection angle (11) is for tilting ring chamber or by more
Individual uniform ring is formed around the inclination injection channel that foam injection chamber (5) is set.
A kind of 5. self-priming air foam rifle according to claim 1, it is characterised in that the current inlet
(1) place is provided with into water polo valve (12).
6. a kind of self-priming air foam rifle according to claim 4, it is characterised in that the water sprays angle
(11) axial centre extended line intersects at the axis centre of foam injection chamber (5) and positioned at the front end of foam injection chamber (5).
7. a kind of self-priming air foam rifle according to claim 4, it is characterised in that the water sprays angle
(11) axis and air entry (4) axis angle β are 15~35 °.
A kind of 8. self-priming air foam rifle according to claim 4, it is characterised in that the inclination injection channel
There are 10.
A kind of 9. self-priming air foam rifle according to claim 1, it is characterised in that foaming cylinder (3) spray
Foaming cylinder sheath (13) is arranged with mouthful.
10. a kind of self-priming air foam rifle according to claim 1, it is characterised in that in the foaming cylinder (3)
Portion is arranged with gun barrel sheath (14), and gun handle (15) is provided with below the gun barrel sheath (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721053155.7U CN207152915U (en) | 2017-08-22 | 2017-08-22 | A kind of self-priming air foam rifle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721053155.7U CN207152915U (en) | 2017-08-22 | 2017-08-22 | A kind of self-priming air foam rifle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207152915U true CN207152915U (en) | 2018-03-30 |
Family
ID=61717493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721053155.7U Expired - Fee Related CN207152915U (en) | 2017-08-22 | 2017-08-22 | A kind of self-priming air foam rifle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207152915U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108635702A (en) * | 2018-05-16 | 2018-10-12 | 东华大学 | Foam solution mixing generating means in a kind of compressed air foam fire-extinguishing system |
| WO2024027293A1 (en) * | 2022-08-05 | 2024-02-08 | 绿友机械集团股份有限公司 | Dual-layer jet fire-fighting foam producing and spraying device |
-
2017
- 2017-08-22 CN CN201721053155.7U patent/CN207152915U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108635702A (en) * | 2018-05-16 | 2018-10-12 | 东华大学 | Foam solution mixing generating means in a kind of compressed air foam fire-extinguishing system |
| WO2024027293A1 (en) * | 2022-08-05 | 2024-02-08 | 绿友机械集团股份有限公司 | Dual-layer jet fire-fighting foam producing and spraying device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180330 Termination date: 20210822 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |