CN201026359Y - High-pressure long and short range switch spray gun and spray head thereof - Google Patents
High-pressure long and short range switch spray gun and spray head thereof Download PDFInfo
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- CN201026359Y CN201026359Y CNU2007201039786U CN200720103978U CN201026359Y CN 201026359 Y CN201026359 Y CN 201026359Y CN U2007201039786 U CNU2007201039786 U CN U2007201039786U CN 200720103978 U CN200720103978 U CN 200720103978U CN 201026359 Y CN201026359 Y CN 201026359Y
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Abstract
The utility model which relates to a high pressure far and close pass conversion spray gun and a nozzle, wherein, the spray gun comprises a water supply connector, a water supply switch, a first gun body connecting pipe, a conversion device, a second gun body connecting pipe and a nozzle. The conversion device comprises a connecting pipe which two ends are connecting with the first gun body connecting pipe and the second gun body connecting pipe, a switch that controls the first gun body connecting pipe to communicate with the internal channel or the external channel of the second first gun body connecting pipe. The other end of the first gun body connecting pipe is connected with the water supply switch and the water supply connector, and the other end of the second gun body connecting pipe is connected with the nozzle. The nozzle comprises an external shell body and a core body, and a closed cavity is formed between the external shell body and the core body, and the end part of the external shell body is provided with a close pass water spraying hole which is communicated with the closed cavity, and the end part of the core body is provided with a far pass water spraying hole which is communicated with the internal channel of the second first gun body connecting pipe, and the closed cavity is communicated with the external channel of the second first gun body connecting pipe.
Description
Technical field
The utility model is about a kind of fire-fighting equipment, more specifically, and about the high-pressure spray gun and the shower nozzle of a kind of exportable different shape water and different ranges.
Background technology
Mostly use fine mist fire-fighting in the existing fire fighting truck, and what be used to thin water smoke is provided is the high-pressure spray gun that is connected with the high pressure sump, this high-pressure spray gun includes a rifle body and a shower nozzle, and wherein an end of rifle body connects a shower nozzle, and the other end connects a Water supply switch valve and a water supply jointing successively.Utilize the feed pipe of water supply jointing and high pressure sump to be tightly connected, and control by Water supply switch valve.Because existing high-pressure spray gun all is shower nozzle that can spray different water smokes of a rifle body correspondence, and in order to put out fire in various degree, need the different ranges of output, as: long-range, short range, and the water of flow and shape, the high-pressure spray gun and the corresponding shower nozzle of a plurality of different structures all can be equipped with for this reason, so that when fire extinguishing, use for the different intensity of a fire, existing for this reason fire fighting truck not only needs to be equipped with different high-pressure spray guns, but also need to be equipped with many water-supply-pipes, there is the too high and inconvenient problem with use of cost.
Summary of the invention
The purpose of this utility model is to provide a kind of far and near journey conversion of high pressure spray gun that is used for fire-fighting, utilizes this spray gun can export two kinds of different water smoke states, and a kind of is the thin water smoke of short range, and another kind is long-range direct current water smoke.
The far and near journey conversion of high pressure in the utility model spray gun includes water supply jointing, Water supply switch valve, the first rifle body tube connector, conversion equipment, second rifle body tube connector and the shower nozzle, the two ends of described conversion equipment be tightly connected respectively described first rifle body tube connector and the described second rifle body tube connector, the other end of the described first rifle body tube connector connects described Water supply switch valve and water supply jointing successively, the other end of the described second rifle body tube connector connects described shower nozzle, and the described second rifle body tube connector inside includes twice obstructed internal channel and outer tunnel mutually;
Described shower nozzle is the far and near Cheng Yiti shower nozzle of a high pressure, include a shell body and a core body, between described shell body and described core body, form an airtight chamber, the end of described shell body is provided with at least one short range hole for water spraying that is communicated with described airtight chamber, the end of described core body is provided with at least one long-range hole for water spraying, and the long-range hole for water spraying of described core body is communicated with the internal channel of the described second rifle body tube connector inside, and described airtight chamber is communicated with the outer tunnel of the described second rifle body tube connector inside;
Described conversion equipment includes two ends and is respectively applied for the connecting pipe that connects the first rifle body tube connector and the second rifle body tube connector, and one is used to control the hand switch that the described first rifle body tube connector is communicated with described second rifle body tube connector inside internal channel or outer tunnel.
The end medium position of described shower nozzle core body is provided with a short range hole for water spraying that is communicated with described airtight chamber.
Described conversion equipment is a uniselector, described hand switch include be located at one of described connecting pipe inside under external force can be along the axially movable hollow inner core body of described connecting pipe, and be enclosed within the rotating switch in the described connecting pipe outside; Between described hollow inner core body and described connecting pipe, form a connection channel, be set with one at described inner core-body near an end of the described first rifle body tube connector and be used to stop up or open that first of described inner core-body inner passage or interface channel stops up and second obstruction; Described rotating switch is connected with helicla flute on the inner core-body lateral wall by the interlock pin rod.
Being provided with one between described rotating switch and the described connecting pipe is used to limit described rotating switch axially movable alignment pin takes place.
The outer wall of described connecting pipe is provided with the peripheral groove that is used to be embedded described alignment pin.
Described conversion equipment is a uniselector, described hand switch includes and is located at one of described connecting pipe inside and can makes axially movable inner core-body along described connecting pipe under external force, and being enclosed within the rotating switch in the described connecting pipe outside, this rotating switch is connected with helicla flute on the inner core-body lateral wall by the interlock pin rod; In the inner inner passage that forms of described inner core-body, between described inner core-body and described connecting pipe, form a connection channel, wherein on the wall of described inner core-body, be provided with the through hole that is used to be communicated with described inner passage and described interface channel, the end that described connecting pipe is connected with the described second rifle body tube connector inserts between the interior pipe and outer tube of the described second rifle body tube connector, described connecting pipe insert manage in described and described outer tube between wall on be provided with connecting through hole, in described, be respectively equipped with connecting through hole on pipe and the described outer tube simultaneously, and the midfeather certain distance of described two connecting through holes, the end that described interior pipe stretches into described inner core-body is closed.
The far and near Cheng Yiti shower nozzle of high pressure in the utility model includes a shell body and a core body, between described shell body and described core body, form an airtight chamber, the end of described shell body is provided with at least one short range hole for water spraying that is communicated with described airtight chamber, the end of described core body is provided with at least one long-range hole for water spraying, and the long-range hole for water spraying of described core body is communicated with the internal channel of the described second rifle body tube connector inside, and described airtight chamber is communicated with the outer tunnel of the described second rifle body tube connector inside.
The end medium position of described shower nozzle core body is provided with a short range hole for water spraying that is communicated with described airtight chamber.
The far and near journey conversion of high pressure in the utility model spray gun integrated by to two kinds of atomizes of far and near journey makes and can take the most rational fire-fighting mode according to the concrete condition of burning things which may cause a fire disaster in fire extinguishing procedure; Simultaneously, what the far and near journey conversion equipment of this spray gun was located at armed when fire extinguishing left hand holds the rifle place, and it is extremely convenient that conversion is got up.
Description of drawings
Fig. 1 is the shape assumption diagram of spray gun in the utility model;
Fig. 2 is the part cross-sectional schematic of spray gun in the utility model;
Fig. 3 is the cross-sectional schematic of rotary converter in the utility model, the structure when this there is shown current by internal channel;
Fig. 4 is the cross-sectional schematic of rotary converter in the utility model, the structure when this there is shown current by interface channel;
Fig. 5 is the hole for water spraying distribution schematic diagram of the far and near Cheng Yiti shower nozzle of the utility model mesohigh;
Fig. 6 is the cross-sectional schematic of the far and near Cheng Yiti shower nozzle of the utility model mesohigh, and this there is shown the streamflow regime of current when long-range hole for water spraying flows out;
Fig. 7 is the cross-sectional schematic of shower nozzle shown in Fig. 6 along the A-A line;
Fig. 8 is the cross-sectional schematic of the far and near Cheng Yiti shower nozzle of the utility model mesohigh, and this there is shown the streamflow regime of current when the short range hole for water spraying flows out;
Fig. 9 is the cross-sectional schematic of another embodiment of rotary converter in the utility model, the structure when this there is shown current by internal channel;
Figure 10 is the cross-sectional schematic of rotary converter shown in Fig. 9, the structure when this there is shown current by interface channel.
The specific embodiment
The specific embodiment of the utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment one
As depicted in figs. 1 and 2, the far and near journey conversion of the high pressure in present embodiment spray gun includes the far and near Cheng Yiti shower nozzle 1 of a high pressure, a rotary converter 3, the first rifle body tube connector 4, the second rifle body tube connector 2, a water supply hand switch 5 and a water supply jointing 6.Be tightly connected the respectively other end of the first rifle body tube connector 4 and the second rifle body tube connector, 2, the first rifle body tube connectors 4 of the two ends of rotary converter 3 connects water supply hand switch 5 and water supply jointing 6 successively.The other end of the second rifle body tube connector 2 connects the far and near Cheng Yiti shower nozzle 1 of high pressure.Wherein:
As shown in Figure 6, the far and near Cheng Yiti shower nozzle 1 of high pressure includes a shell body 10 and a core body 11, between shell body 10 and inner core-body 11, form an airtight chamber 12, this airtight chamber 12 directly is communicated with six short range hole for water sprayings 13 that are located at shell body 10 ends, the end of core body 11 is provided with two long-range hole for water sprayings 14 that are not communicated with airtight chamber 12, be provided with a short range hole for water spraying 15 simultaneously at the middle part of core body 11, this short range hole for water spraying 15 is communicated with airtight chamber 12 by one or more passage 16, as shown in Figure 7.So form hole for water spraying distributed architecture as shown in Figure 5, how much quantity of hole for water spraying is not limited in this certainly, can be according to different demands different setting the in addition, and, the short range hole for water spraying 15 at core body 11 middle parts can be set in order to simplify processing technology.
As shown in Figure 2, the second rifle body tube connector 2 is a concentric dual pipeline, promptly includes concentric outer tube 22 and interior pipe 23, and forms the not connected internal channel 21 of twice and around the outer tunnel 20 of this internal channel 21.The shell body 10 of the far and near Cheng Yiti shower nozzle 1 of one end of its middle external tube 22 and high pressure is tightly connected, outer tunnel 20 is connected with airtight chamber 12, in pipe 23 end identical and the core body 11 of high pressure distance Cheng Yiti shower nozzle 1 with outer tube 22 be tightly connected, internal channel 21 directly is communicated with, as shown in Figure 8 with long-range hole for water spraying 14 in the core body 11.The second rifle body tube connector 2 is not tightly connected with an end and the rotary converter 3 that the far and near Cheng Yiti shower nozzle 1 of high pressure is connected.
As shown in Figure 3 and Figure 4, rotary converter 3 includes the connecting pipe 35 that two ends are tightly connected with the first rifle body tube connector 4 and the second rifle body tube connector 2 respectively, is provided with conduit connectable 35 axially movable hollow inner core bodies 33 and be enclosed within the rotating switch 31 in connecting pipe 35 outsides under external force in the inside of this connecting pipe 35.Form an inner passage 37 in the inside of this inner core-body 33, between inner core-body 33 and connecting pipe 35, form a connection channel 36.Connecting pipe 35 inner ends that are connected with the first rifle body tube connector 4 are fixed with one first line clogging 30 and one second and stop up 38, wherein second obstruction 38 and integrally formed projection on connecting pipe 35 inwalls.Rotating switch 31 when rotating switch 31, can make inner core-body 33 axially being moved along connecting pipe 35 by being connected with the helicla flute 330 that is provided with on interlock pin rod 32 and inner core-body 33 outer surfaces.Promptly after rotating switch 31 clockwise (or counterclockwise) rotation, as shown in Figure 3, inner core-body 33 and second stops up 38 sealings, promptly seal being communicated with between the first rifle body tube connector 4 and the interface channel 36, open being communicated with of the first rifle body tube connector 4 and inner passage 37, the current in the first rifle body tube connector 4 are entered in the inner passage 37 of inner core-body 33.As shown in Figure 4, after rotating switch 31 reverse rotations, inner core-body 33 and first stops up 30 sealings, promptly seal being communicated with between the first rifle body tube connector 4 and the inner passage 37, and open being communicated with of the first rifle body tube connector 4 and interface channel 36, current in the first rifle body tube connector 4 are flowed in the interface channel 36 between inner core-body 33 and the connecting pipe 35.
In order to prevent that rotating switch 31 from moving axially along connecting pipe 35, on rotating switch 31, be provided with an alignment pin 34, an end of this alignment pin 34 stretches in the peripheral groove 39 on connecting pipe 35 outer walls, shown in the enlarged diagram of the I among Fig. 3.Leak in addition, between rotating switch 31 and the connecting pipe 35, between connecting pipe 35 and the first rifle body tube connector 4, between connecting pipe 35 and the second rifle body tube connector 2, be provided with sealing ring between connecting pipe 35 and the inner core-body 33 in order to prevent.
The concrete operation principle of the far and near journey conversion of present embodiment mesohigh spray gun is as follows:
In use, after opening moving 5 switches of supply sailor, making current flow into the first rifle body tube connector 4 from water supply jointing 6 always supplies water, after arriving rotary converter, by the rotating switch 31 in counterclockwise manual or the conversion equipment that turns clockwise, drive inner core-body 33 moves backward, make the not end and first of inner core-body 33 stop up 30 butts, the internal channel 37 of sealing inner core-body 33, as shown in Figure 4, make in the water inflow inner core-body 33 and the interface channel 36 between the connecting pipe 35 of the first rifle body tube connector 4, further enter in the outer tunnel 20 of the second rifle body tube connector 2, enter at last in the airtight chamber 12 of shower nozzle 1, from short range hole for water spraying 13, ejection in 15, as shown in Figure 6, form the thin water smoke of short range.
When needs use long-range water smoke, opposite spin rotating switch 31, driving inner core-body 33 moves forward, make first to stop up 30 and separate with inner core-body 33, and the inner core-body 33 and second obstruction 38 are tightly connected, seal being communicated with of the first rifle body tube connector 4 and interface channel 36, open being connected of the first rifle body tube connector 4 and inner passage 37, as shown in Figure 3, water in the first rifle body tube connector 4 is entered in the inner passage 37 of inner core-body 33 inside, and the stepping of going forward side by side is gone in the internal channel 21 of the second rifle body connecting pipe 2, and the long-range hole for water spraying 14 from shower nozzle 1 sprays at last, as shown in Figure 8, form long-range straight current.The purpose that realization is freely changed, thus can not need be equipped with multiple spray gun and feed pipe, have advantage easy to use and that reduce cost.
In addition, because the use of the far and near journey conversion of the utility model mesohigh spray gun, can in the face of different burning things which may cause a fire disaster form the time, need not change the spray gun type, and the spray regime of directly changing spray gun gets final product, thereby improved fire-fighting efficiency greatly.
Embodiment two
The basically identical of describing among far and near journey conversion spray gun of high pressure in the present embodiment and the embodiment one, having identical function uses identical label to illustrate with the parts of structure, therefore the component no longer with same numeral is described in detail separately, wherein difference is the hand switch of the rotary converter inside in the present embodiment, as Fig. 9 and shown in Figure 10, hand switch in the present embodiment includes the rotating switch 31 that an inner core-body 33 and that is located at connecting pipe 35 inside is enclosed within connecting pipe 35 outsides, form an inner passage 37 in the inside of inner core-body 33, between inner core-body 33 and connecting pipe 35, form a connection channel 36, wherein on the wall of inner core-body 33, be provided with the through hole 331 that is used to be communicated with inner passage 37 and interface channel 36, the end that connecting pipe 35 is connected with the second rifle body tube connector 2 inserts between the interior pipe 23 and outer tube 22 of the second rifle body tube connector 2, connecting pipe 35 in inserting, manage 23 and outer tube 22 between wall on be provided with connecting through hole 332, on interior pipe 23 and outer tube 22, be respectively equipped with connecting through hole 230 and 220 simultaneously, and connecting through hole 230,220 midfeather certain distances, promptly not in same vertical plane, after inner core-body 33 moves backward, as shown in figure 10, interface channel 36 is communicated with outer tunnel 20 by connecting through hole 220, after inner core-body 33 moves forward, interface channel 36 is by connecting through hole 220,332,230 are communicated with internal channel 21, as shown in figure 11.Interior pipe 23 ends that stretch into inner core-body 33 are closed, and are provided with the dashpot 231 that is used to cushion current around the outer tube wall upper edge of interior pipe 23 connecting through hole 230.
Embodiment three
Basically identical among far and near journey conversion spray gun of high pressure in the present embodiment and the embodiment two, its difference is that the rotary converter in the present embodiment uses an end of the first rifle body tube connector 4 to replace connecting pipe 35 among the embodiment two, can realize identical functions equally.
In addition, the change-over switch in the utility model is not only several schemes that provide in the foregoing description, can also be valve etc. other as long as can realize that the switch of changing can, because this to one skilled in the art, is easy to realize, therefore describes in detail no longer separately.
In sum, be used for the far and near journey conversion of fire-fighting high pressure spray gun in the utility model and just can eject two kinds of water smokes of thin water smoke of short range and long-range direct current form, thereby in the face of the different condition of a fire time, can take different fire-fighting modes flexibly by conversion equipment.
Claims (10)
1. the far and near journey of high pressure is changed spray gun, include water supply jointing (6), Water supply switch valve (5), the first rifle body tube connector (4), conversion equipment (3), the second rifle body tube connector (2) and shower nozzle (1), the two ends of described conversion equipment (3) be tightly connected respectively described first rifle body tube connector (4) and the described second rifle body tube connector (2), the other end of the described first rifle body tube connector (4) connects described Water supply switch valve (5) and water supply jointing (6) successively, the other end of the described second rifle body tube connector (2) connects described shower nozzle (1), it is characterized in that: described second rifle body tube connector (2) inside includes twice obstructed internal channel (21) and outer tunnel (20) mutually;
Described shower nozzle (1) is the far and near Cheng Yiti shower nozzle of a high pressure, include a shell body (10) and a core body (11), between described shell body (10) and described core body (11), form an airtight chamber (12), the end of described shell body (10) is provided with at least one short range hole for water spraying (13) that is communicated with described airtight chamber (12), the end of described core body (11) is provided with at least one long-range hole for water spraying (14), and the long-range hole for water spraying (14) of described core body (11) is communicated with the internal channel (21) of the described second rifle body tube connector (2) inside, and described airtight chamber (12) is communicated with the outer tunnel (20) of the described second rifle body tube connector (2) inside;
Described conversion equipment (3) includes two ends and is respectively applied for the connecting pipe (35) that connects the first rifle body tube connector (4) and the second rifle body tube connector (2), reaches one and be used to control the hand switch that the described first rifle body tube connector (4) is communicated with described second inner internal channel of rifle body tube connector (2) (21) or outer tunnel (20).
2. according to the far and near journey conversion of the high pressure described in the claim 1 spray gun, it is characterized in that: the end medium position of described shower nozzle core body (11) is provided with a short range hole for water spraying (15) that is communicated with described airtight chamber (12).
3. according to the far and near journey conversion of the high pressure described in claim 1 or 2 spray gun, it is characterized in that: described conversion equipment is a uniselector, described hand switch include be located at described connecting pipe (35) inner one under external force can be along the axially movable hollow inner core body of described connecting pipe (35) (33), and be enclosed within the rotating switch (31) in described connecting pipe (35) outside; Between described hollow inner core body (33) and described connecting pipe (35), form a connection channel (36), be set with one at described inner core-body (33) near an end of the described first rifle body tube connector (4) and be used for stopping up or opening first of described inner core-body (33) inner passage (37) or interface channel (36) and stop up (30) and second obstruction (38); Described rotating switch (31) is connected with helicla flute (330) on inner core-body (33) lateral wall by interlock pin rod (32).
4. according to the far and near journey conversion of the high pressure described in the claim 3 spray gun, it is characterized in that: be provided with one between described rotating switch (31) and the described connecting pipe (35) and be used to limit described rotating switch (31) axially movable alignment pin (34) takes place.
5. according to the far and near journey conversion of the high pressure described in the claim 4 spray gun, it is characterized in that: the outer wall of described connecting pipe (35) is provided with the peripheral groove (39) that is used to be embedded described alignment pin (34).
6. according to the far and near journey conversion of the high pressure described in claim 1 or 2 spray gun, it is characterized in that: described conversion equipment is a uniselector, described hand switch include be located at described connecting pipe (35) inner one can make axially movable inner core-body (33) along described connecting pipe (35) under external force, and being enclosed within the rotating switch (31) in described connecting pipe (35) outside, this rotating switch (31) is connected with helicla flute (330) on inner core-body (33) lateral wall by interlock pin rod (32); In the inner inner passage (37) that forms of described inner core-body (33), between described inner core-body (33) and described connecting pipe (35), form a connection channel (36), wherein on the wall of described inner core-body (33), be provided with the through hole (331) that is used to be communicated with described inner passage (37) and described interface channel (36), the end that described connecting pipe (35) is connected with the described second rifle body tube connector (2) inserts between the interior pipe (23) and outer tube (22) of the described second rifle body tube connector (2), described connecting pipe (35) is provided with connecting through hole (332) on inserting the wall of managing in described between (23) and the described outer tube (22), in described, be respectively equipped with connecting through hole (230 on pipe (23) and the described outer tube (22) simultaneously, 220), and described connecting through hole (230,220) midfeather certain distance, the end that described interior pipe (23) stretches into described inner core-body (33) is closed.
7. according to the far and near journey conversion of the high pressure described in the claim 6 spray gun, it is characterized in that: be provided with one between described rotating switch (31) and the described connecting pipe (35) and be used to limit described rotating switch axially movable alignment pin (34) takes place.
8. according to the far and near journey conversion of the high pressure described in the claim 7 spray gun, it is characterized in that: the outer wall of described connecting pipe (35) is provided with the peripheral groove that is used to be embedded described alignment pin (34).
9. the far and near Cheng Yiti shower nozzle of a high pressure, it is characterized in that: include a shell body (10) and a core body (11), it forms an airtight chamber (12) between described shell body (10) and described core body (11), the end of described shell body is provided with at least one short range hole for water spraying (13) that is communicated with described airtight chamber (12), the end of described core body (11) is provided with at least one long-range hole for water spraying (14), and the long-range hole for water spraying (14) of described core body (11) is communicated with the internal channel (21) of the described second rifle body tube connector (2) inside, and described airtight chamber (12) is communicated with the outer tunnel (20) of the described second rifle body tube connector (2) inside.
10. according to the far and near Cheng Yiti shower nozzle of the high pressure described in the claim 9, it is characterized in that: the end medium position of described shower nozzle core body (11) is provided with a short range hole for water spraying (15) that is communicated with described airtight chamber (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201039786U CN201026359Y (en) | 2007-03-27 | 2007-03-27 | High-pressure long and short range switch spray gun and spray head thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201039786U CN201026359Y (en) | 2007-03-27 | 2007-03-27 | High-pressure long and short range switch spray gun and spray head thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201026359Y true CN201026359Y (en) | 2008-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201039786U Expired - Fee Related CN201026359Y (en) | 2007-03-27 | 2007-03-27 | High-pressure long and short range switch spray gun and spray head thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201026359Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102302832A (en) * | 2011-07-01 | 2012-01-04 | 平阴县公安局 | Internal cubic non-blind-angle water gun |
| CN106581910A (en) * | 2016-11-05 | 2017-04-26 | 合肥辰泰安全设备有限责任公司 | Water spraying fire fighting spray gun |
| CN107320886A (en) * | 2017-07-19 | 2017-11-07 | 集美大学 | A kind of single-phase remote, short range water mists conversion nozzle |
-
2007
- 2007-03-27 CN CNU2007201039786U patent/CN201026359Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102302832A (en) * | 2011-07-01 | 2012-01-04 | 平阴县公安局 | Internal cubic non-blind-angle water gun |
| CN106581910A (en) * | 2016-11-05 | 2017-04-26 | 合肥辰泰安全设备有限责任公司 | Water spraying fire fighting spray gun |
| CN107320886A (en) * | 2017-07-19 | 2017-11-07 | 集美大学 | A kind of single-phase remote, short range water mists conversion nozzle |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 Termination date: 20150327 |
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| EXPY | Termination of patent right or utility model |