CN214713909U - Hand-held water-gas mixed foam fire-extinguishing ejector - Google Patents
Hand-held water-gas mixed foam fire-extinguishing ejector Download PDFInfo
- Publication number
- CN214713909U CN214713909U CN202120796254.4U CN202120796254U CN214713909U CN 214713909 U CN214713909 U CN 214713909U CN 202120796254 U CN202120796254 U CN 202120796254U CN 214713909 U CN214713909 U CN 214713909U
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- Prior art keywords
- ring body
- mixer
- flow passage
- communicated
- wall
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- 239000006260 foam Substances 0.000 title claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 238000002347 injection Methods 0.000 claims abstract description 38
- 239000007924 injection Substances 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000007787 solid Substances 0.000 claims description 26
- 210000001503 joint Anatomy 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000001629 suppression Effects 0.000 claims 9
- 230000000694 effects Effects 0.000 abstract description 13
- 238000005187 foaming Methods 0.000 abstract description 10
- 239000012141 concentrate Substances 0.000 abstract description 4
- 239000003570 air Substances 0.000 abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Abstract
The utility model relates to a hand-held water-gas mixed foam fire-extinguishing ejector, which comprises a mixer and an injection pipe connected with the front end of the mixer, wherein an annular flow passage is arranged at the middle front part in the mixer, a branch passage communicated with the annular flow passage is arranged at the middle rear part of the mixer, and the outlet end of the branch passage is opposite to the injection pipe towards the front end; a plurality of inclined jet holes communicated with the annular channel and the jet pipe are arranged at the front part of the mixer; a water inlet communicated with the annular flow passage is arranged below the outer wall of the mixer; and a liquid inlet pipe communicated with the tail end of the branch channel is also arranged at the side part of the mixer. After the technical scheme is adopted in the utility model, utilize the jet that annular runner, tributary passageway and the slope form that set up in the blender set up, can make foam concentrate and water, air realize mixing, striking foaming many times in the blender, reach better foaming effect, and then reach better fire extinguishing effect.
Description
The technical field is as follows:
the utility model relates to the technical field of fire-fighting equipment, in particular to a hand-held water-gas mixed foam fire-extinguishing ejector.
Background art:
the air foam fire extinguishing device is mainly used for extinguishing oil, alcohol and other flammable liquid fire disasters occurring in oil depots, airports, petrochemical plants, paint plants, alcohol plants and the like, and the basic working principle is as follows: when a fire occurs, the fire extinguishing device is connected to a fire hydrant through a hose, namely, a water source is connected, the proportional mixer pumps out concentrated foam liquid from the fire extinguishing agent barrel by utilizing the pressure of the water source, and then the foam spraying gun automatically sucks air to form air foam for fire extinguishing.
The existing fire extinguishing ejector, such as a foam fire extinguishing gun disclosed by Chinese utility model patent 201720129160.5, a portable foam fire extinguishing gun disclosed by Chinese utility model patent 201520308704.5, a spray gun for fire extinguishing disclosed by Chinese utility model patent 202011545631.3, and the like, directly adopts common tee joints or similar simple structures for mixing foam liquid and water, has poor mixed foaming effect and high consumption, and has defects in the aspects of hand-held convenience and the like.
The utility model has the following contents:
the utility model aims at overcoming the above-mentioned weak point of prior art, provide a hand-held type aqueous vapor mixture foam sprayer of putting out a fire.
The utility model adopts the technical proposal that: a hand-held water-gas mixed foam fire-extinguishing ejector comprises a mixer and an ejection pipe connected with the front end of the mixer, wherein an annular flow passage is arranged at the middle front part in the mixer, and a cavity communicated with the ejection pipe is formed inside the inner side wall of the annular flow passage; a branch passage communicated with the annular flow passage is arranged at the middle rear part of the mixer, and the outlet end of the branch passage is positioned on the axis of the mixer and is opposite to the injection pipe towards the front end; a plurality of injection holes communicated with the annular channel and the injection pipe are formed in the front part of the mixer and the front end wall of the annular flow passage of the mixer, and the injection holes are obliquely arranged towards the axial direction of the injection pipe; a water inlet communicated with the annular flow passage is arranged below the outer wall of the mixer; a liquid inlet pipe communicated with the tail end of the branch channel is further installed on the side part of the mixer, and the liquid inlet pipe penetrates out of the side wall of the mixer; the rear end opening of the mixer is communicated with the cavity and the injection pipe.
Specifically, the mixer comprises an outer ring body, a front ring body, a middle ring body and a rear ring body, wherein,
an annular flange bent towards the front end is formed on the inner wall of the rear end of the outer ring body, the inner end face of the front ring body is in butt joint with the annular flange, the outer wall of the front ring body is in sealing connection with the inner wall of the front end of the outer ring body, the front end of the front ring body is communicated with the injection pipe, an annular flow channel is formed between the outer wall of the middle-rear section of the front ring body and the inner wall of the outer ring body as well as the annular flange, the water inlet is formed in the outer wall below the outer ring body, and the injection hole is formed in the side wall of the front ring body;
the middle ring body is in butt joint with the rear end part of the outer ring body, a first solid part is formed on the inner wall of the middle ring body towards the center, a first flow channel parallel to the axial direction is formed in the first solid part close to the edge, a third flow channel is formed at the lower end of the first solid part along the axial direction of the middle ring body, the first flow channel and the third flow channel respectively penetrate through the front end and the rear end of the first solid part, and a first through hole in butt joint communication with the first flow channel is formed in the flow channel wall of the annular flow channel in the outer ring body;
the rear ring body is in butt joint with the rear end part of the middle ring body, a second solid part is formed on the inner wall of the rear ring body towards the center, and a second flow passage communicated with the first flow passage and the third flow passage in a butt joint mode is formed on the second solid part;
the liquid inlet pipe is arranged at the joint of the middle ring body and the rear ring body, and the inner end part of the liquid inlet pipe is communicated with the joint of the second flow channel and the third flow channel;
the space outside the solid parts of the rear ring body and the middle ring body forms an airflow channel which is communicated with the cavity of the outer ring body, the front ring body and the injection pipe.
Furthermore, on the middle ring body and the rear ring body, a containing cavity is formed at the joint of the third flow passage and the second flow passage of the first solid part and the second solid part, an insert is arranged in the containing cavity, an insert flow passage communicated with the third flow passage and the second flow passage in a butt joint mode is formed in the insert, and the inner end portion of the liquid inlet pipe penetrates through the insert and is vertically communicated with the insert flow passage.
The middle section diameter of the insert runner is smaller than the front section diameter and the rear section diameter, and the front end and the rear end are outwards gradually expanded and are respectively in butt joint communication with the third runner and the second runner.
The middle ring body and the outlet end of the third flow channel are also connected with a small liquid outlet pipe, and the end part of the small liquid outlet pipe is in a contracted shape.
The liquid inlet pipe is also connected with a flow regulating valve, and an adjusting knob of the regulating valve is positioned outside the mixer.
The water inlet is connected with a water inlet pipeline which is used as a handheld grip, and the tail end of the water inlet pipe is provided with a quick connector.
The rear end part of the rear ring body is also connected with a rear cover, the rear cover is provided with an air inlet grid, and the rear cover is also connected with a handle.
The outer wall of the mixer is also provided with a pressure gauge for measuring the water flow pressure in the annular flow passage.
And sealing rings are respectively arranged at the butt joint surfaces of the outer ring body, the middle ring body, the rear ring body, the insert and the insert runner.
The utility model adopts the above technical scheme after, utilize the jet that annular runner, tributary passageway and the slope form that set up in the blender set up, can make foam concentrate and water, air realize mixing, striking foaming many times in the blender, reach better foaming effect, and then reach better fire extinguishing effect, simultaneously, adopt the inlet tube to simplify the structure promptly as the handle and alleviate sprayer weight, can promote the convenience of handheld operation again.
Description of the drawings:
fig. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the embodiment of FIG. 1;
FIGS. 3 and 4 are schematic exploded views of the embodiment of FIG. 1;
fig. 5 is a schematic structural diagram of another embodiment of the present invention.
The specific implementation mode is as follows:
as shown in fig. 1-4, the present invention relates to a handheld water-gas mixed foam fire-extinguishing injector, which includes a mixer 1 and an injection pipe 2 connected to the front end of the mixer 1, wherein an annular flow passage 101 is provided in the mixer 1, the annular flow passage 101 is provided along the periphery of the inner wall of the mixer 1, and is located at the front-middle part of the mixer 1, a cavity 102 communicated with the injection pipe 2 is formed inside the inner wall of the annular flow passage 101, in this embodiment, the cavity 102 is cylindrical; a branch passage 103 communicated with the annular flow passage 101 is arranged at the middle rear part of the mixer 1, and the outlet end of the branch passage 103 is positioned on the axis of the mixer 1 and is opposite to the injection pipe 2 towards the front end; a plurality of injection holes 104 communicated with the annular channel 101 and the injection pipe 2 are formed in the front part of the mixer 1 and the front end wall of the annular flow passage 101 of the mixer 1, and the injection holes 104 are obliquely arranged towards the axial direction of the injection pipe 2; a water inlet 105 communicated with the annular flow passage 101 is arranged below the outer wall of the mixer 1; a liquid inlet pipe 3 communicated with the tail end of the branch passage 102 is also arranged at the side part of the mixer 1, in the embodiment, the liquid inlet pipe 3 is vertically communicated with the branch passage 102, and negative pressure is formed to suck foam liquid from the liquid inlet pipe; and the liquid inlet pipe 3 penetrates out of the side wall of the mixer 1; the rear end opening of the mixer 1 communicates with the cavity 102 and the injection pipe 104 in this order to allow the air flow to enter.
On one hand, high-pressure water flow enters the annular flow channel 101 from the water inlet 105 of the mixer 1, one part of water flow is directly sprayed from the spray holes 104 towards the interior of the spray pipe 2 and is sprayed towards the center from the periphery, and the other part of water flow flows backwards from the branch flow channel 103 at the rear part, then turns back along the radial direction and is also sprayed towards the axial direction of the spray pipe 2 along the axial direction; on the other hand, the water flow ejected from the branch passage 103 forms a negative pressure suction effect at the liquid inlet pipe 3 at the tail end, so that the foam liquid in the liquid supply pipeline connected with the liquid inlet pipe 3 is absorbed and enters the branch passage 103 to be mixed with water, and then is ejected towards the cavity 102 and the ejection pipe 2 along the axial direction, further mixed with the water ejected from the peripheral ejection holes 104 and the air entering from the rear part of the mixer 1, impacted and foamed, and ejected by the ejection pipe 2 after being fully foamed in the ejection pipe 2, thereby achieving a better fire extinguishing effect.
Specifically, the mixer 1 includes an outer ring body 11, a front ring body 12, a middle ring body 13, and a rear ring body 14, wherein,
an annular flange 111 bent towards the front end is formed on the inner wall of the rear end of the outer ring body 11, the inner end face of the front ring body 12 is in butt joint with the annular flange 111, the outer wall of the front ring body 12 is in sealing connection with the inner wall of the front end of the outer ring body 11, the front end of the front ring body 12 is in butt joint communication with the injection pipe 2, the annular flow channel 101 is formed between the outer wall of the middle-rear section of the front ring body 12 and the inner wall of the outer ring body 11 and the annular flange 111, the water inlet 105 is arranged on the outer wall below the outer ring body 11, the injection holes 104 are arranged on the side wall of the front ring body 11, the diameter of the side wall is reduced to form an inclined step surface, the injection holes 104 are arranged on the inclined step surface and penetrate through the side wall of the front ring body 11, and the number of the injection holes is 6 in the embodiment and the injection holes are uniformly arranged on the periphery of the front ring body 11;
the middle ring body 13 is butted with the rear end part of the outer ring body 11, a first solid part 131 is formed towards the center on the inner wall of the middle ring body 13, a first flow channel 132 parallel to the axial direction is formed on the edge of the first solid part 131, a third flow channel 133 is formed at the lower end of the first solid part 131 along the axial direction of the middle ring body 13, the first flow channel 132 and the third flow channel 133 respectively penetrate through the front end and the rear end of the first solid part 131, and a first through hole 112 communicated with the first flow channel 132 in a butting way is formed in the flow channel wall of the annular flow channel 101 in the outer ring body 11;
the rear ring body 14 is butted with the rear end of the middle ring body 13, a second solid part 141 is formed towards the center on the inner wall of the rear ring body 14, and a second flow passage 142 formed on the second solid part 141 and in butt communication with the first flow passage 132 and the third flow passage 133; in this embodiment, the second flow channel 142 is a "U" shaped structure; (the machining holes formed for machining the U-shaped structures are also shown in the figures and are blocked by screws or other objects after the U-shaped structures are assembled.)
The liquid inlet pipe 3 is arranged at the joint of the middle ring body 13 and the rear ring body 14, and the inner end part of the liquid inlet pipe 3 is communicated with the joint of the second flow passage 142 and the third flow passage 133;
the space outside the solid parts of the rear ring body 14 and the middle ring body 13 forms an airflow channel which is communicated with the cavity 102 of the outer ring body 11, the front ring body 12 and the injection pipe 2, so that air is automatically sucked to participate in the foaming and mixing of water and foam concentrate in the injection process, and a better fire extinguishing effect is achieved.
Further, on the middle ring body 13 and the rear ring body 14, a containing cavity 106 is formed at the joint of the third flow channel 133 and the second flow channel 142 of the first solid part 131 and the second solid part 141, an insert 4 is arranged in the containing cavity 106, an insert flow channel 401 in butt communication with the third flow channel 133 and the second flow channel 142 is formed in the insert 4, and the inner end of the liquid inlet pipe 3 penetrates through the insert 4 and is vertically communicated with the insert flow channel 401 in the radial direction;
the diameter of the middle section of the insert runner 401 is smaller than the diameters of the front section and the rear section, and the front end and the rear end of the insert runner are outward in gradually expanding type and are respectively in butt joint communication with the third runner 133 and the second runner 142. By using the insert 4 and the insert flow passage 401 with a special shape inside, the water and the foam liquid delivered from the second flow passage 142 and the liquid inlet pipe 3 are mixed in a narrow space and then quickly diffused into a wider space, so that a better mixed foaming effect is achieved.
Sealing rings are respectively arranged on the abutting surfaces of the outer ring body 11, the middle ring body 12, the rear ring body 13, the insert 4 and the insert runner 401 so as to realize sealing abutting and avoid leakage, and in the embodiment, the outer ring body and the middle ring body can be stably abutted by a sealant or a welding mode during assembly; and positioning holes and positioning columns are arranged or accurate positioning and assembly are realized through screw holes, screws and the like.
The outlet ends of the third flow channel 133 and the middle ring body 13 are further connected with a small liquid outlet pipe 134, and the end part of the small liquid outlet pipe 134 is in a contracted shape, so that the pressure and the speed of liquid outlet can be maintained, and part of the mixed liquid can be ejected axially in a columnar shape and is collided and mixed with the water ejected from the ejection hole 104 again, and the mixing and foaming effects are further improved.
The water inlet 105 is connected with a water inlet pipe 5, and the water inlet pipe 5 is used as a handheld grip, so that the spraying direction of the sprayer can be conveniently held and controlled by a hand when the sprayer is used. The end of the water inlet pipe 5 is provided with a quick coupling 51 to facilitate quick connection of the water supply pipeline.
The rear end of the rear ring body 14 is also connected with a rear cover 15, the rear cover 15 is provided with an air inlet grid 151, the rear cover 15 is also connected with a handle 152, the rear cover 15 is arranged to enable the ejector to be more attractive and complete, and the handle 152 is arranged to facilitate carrying.
The outer wall of the mixer 1 is further provided with a pressure gauge 16 for measuring the pressure of the water flow in the annular flow passage 101, so that an operator can master the injection pressure at any time, and the injection state can be adjusted better according to the pressure.
Referring to fig. 5, in another embodiment, a flow control valve 31 is further connected to the liquid inlet pipe 3, and an adjusting knob of the flow control valve 31 is located outside the mixer 1, so as to adjust the amount of the foam liquid transmitted by the liquid inlet pipe 3, thereby controlling the mixing ratio of the water and the foam liquid, and achieving the best ratio and the best fire extinguishing effect as required. The outer end part of the liquid inlet pipe 3 is also provided with a quick joint structure so as to be convenient for quickly connecting or dismantling the foam liquid supply pipeline.
The utility model adopts the above technical scheme after, the injection mouth 105 that utilizes annular runner 101, tributary passageway 103 and the slope form setting that set up in the blender 1 can make foam concentrate and water, air realize mixing, striking foaming many times in blender 1, reaches better foaming effect, and then reaches better fire extinguishing effect, simultaneously, adopts inlet channel 4 to simplify the structure promptly as the handle and alleviates sprayer weight, can promote the convenience of handheld operation again.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A hand-held water-gas mixed foam fire-extinguishing sprayer comprises a mixer and a spray pipe connected with the front end of the mixer, and is characterized in that: an annular flow passage is arranged at the middle front part in the mixer, and a cavity communicated with the injection pipe is formed inside the inner side wall of the annular flow passage; a branch passage communicated with the annular flow passage is arranged at the middle rear part of the mixer, and the outlet end of the branch passage is positioned on the axis of the mixer and is opposite to the injection pipe towards the front end; a plurality of injection holes communicated with the annular channel and the injection pipe are formed in the front part of the mixer and the front end wall of the annular flow passage of the mixer, and the injection holes are obliquely arranged towards the axial direction of the injection pipe; a water inlet communicated with the annular flow passage is arranged below the outer wall of the mixer; a liquid inlet pipe communicated with the tail end of the branch channel is further installed on the side part of the mixer, and the liquid inlet pipe penetrates out of the side wall of the mixer; the rear end opening of the mixer is communicated with the cavity and the injection pipe.
2. The hand-held water-air hybrid foam fire suppression sprinkler according to claim 1, wherein: the mixer comprises an outer ring body, a front ring body, a middle ring body and a rear ring body, wherein,
an annular flange bent towards the front end is formed on the inner wall of the rear end of the outer ring body, the inner end face of the front ring body is in butt joint with the annular flange, the outer wall of the front ring body is in sealing connection with the inner wall of the front end of the outer ring body, the front end of the front ring body is communicated with the injection pipe, an annular flow channel is formed between the outer wall of the middle-rear section of the front ring body and the inner wall of the outer ring body as well as the annular flange, the water inlet is formed in the outer wall below the outer ring body, and the injection hole is formed in the side wall of the front ring body;
the middle ring body is in butt joint with the rear end part of the outer ring body, a first solid part is formed on the inner wall of the middle ring body towards the center, a first flow channel parallel to the axial direction is formed in the first solid part close to the edge, a third flow channel is formed at the lower end of the first solid part along the axial direction of the middle ring body, the first flow channel and the third flow channel respectively penetrate through the front end and the rear end of the first solid part, and a first through hole in butt joint communication with the first flow channel is formed in the flow channel wall of the annular flow channel in the outer ring body;
the rear ring body is in butt joint with the rear end part of the middle ring body, a second solid part is formed on the inner wall of the rear ring body towards the center, and a second flow passage communicated with the first flow passage and the third flow passage in a butt joint mode is formed on the second solid part;
the liquid inlet pipe is arranged at the joint of the middle ring body and the rear ring body, and the inner end part of the liquid inlet pipe is communicated with the joint of the second flow passage and the third flow passage.
3. The hand-held water-air hybrid foam fire suppression sprinkler according to claim 2, wherein: and on the middle ring body and the rear ring body, a containing cavity is formed at the joint of the third flow passage and the second flow passage of the first solid part and the second solid part, an insert is arranged in the containing cavity, an insert flow passage which is in butt joint communication with the third flow passage and the second flow passage is formed in the insert, and the inner end part of the liquid inlet pipe penetrates into the insert and is vertically communicated with the insert flow passage.
4. The hand-held water-air hybrid foam fire suppression sprinkler according to claim 3, wherein: the middle section diameter of the insert runner is smaller than the front section diameter and the rear section diameter, and the front end and the rear end are outwards gradually expanded and are respectively in butt joint communication with the third runner and the second runner.
5. The hand-held water-air hybrid foam fire suppression sprinkler according to claim 2 or 3, wherein: the middle ring body and the outlet end of the third flow channel are also connected with a small liquid outlet pipe, and the end part of the small liquid outlet pipe is in a contracted shape.
6. The hand-held water-air hybrid foam fire suppression sprinkler according to claim 1, 2 or 3, wherein: the liquid inlet pipe is also connected with a flow regulating valve, and an adjusting knob of the regulating valve is positioned outside the mixer.
7. The hand-held water-air hybrid foam fire suppression sprinkler according to claim 2, wherein: the water inlet is connected with a water inlet pipeline as a handheld grip, and the tail end of the water inlet pipeline is provided with a quick connector.
8. The hand-held water-air hybrid foam fire suppression sprinkler according to claim 2, wherein: the rear end part of the rear ring body is also connected with a rear cover, the rear cover is provided with an air inlet grid, and the rear cover is also connected with a handle.
9. The hand-held water-air hybrid foam fire suppression sprinkler according to claim 1, 2 or 3, wherein: the outer wall of the mixer is also provided with a pressure gauge for measuring the water flow pressure in the annular flow passage.
10. The hand-held water-air hybrid foam fire suppression sprinkler according to claim 2, wherein: and sealing rings are respectively arranged at the butt joint surfaces of the outer ring body, the middle ring body, the rear ring body, the insert and the insert runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120796254.4U CN214713909U (en) | 2021-04-16 | 2021-04-16 | Hand-held water-gas mixed foam fire-extinguishing ejector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120796254.4U CN214713909U (en) | 2021-04-16 | 2021-04-16 | Hand-held water-gas mixed foam fire-extinguishing ejector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214713909U true CN214713909U (en) | 2021-11-16 |
Family
ID=78604039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120796254.4U Withdrawn - After Issue CN214713909U (en) | 2021-04-16 | 2021-04-16 | Hand-held water-gas mixed foam fire-extinguishing ejector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214713909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112972945A (en) * | 2021-04-16 | 2021-06-18 | 东莞市顶迅科技有限公司 | Hand-held water-gas mixed foam fire-extinguishing ejector |
-
2021
- 2021-04-16 CN CN202120796254.4U patent/CN214713909U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112972945A (en) * | 2021-04-16 | 2021-06-18 | 东莞市顶迅科技有限公司 | Hand-held water-gas mixed foam fire-extinguishing ejector |
| CN112972945B (en) * | 2021-04-16 | 2023-11-21 | 东莞市顶迅科技有限公司 | Hand-held type water gas mixing foam fire extinguishing sprayer |
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Granted publication date: 20211116 Effective date of abandoning: 20231121 |
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Granted publication date: 20211116 Effective date of abandoning: 20231121 |