CN105396242A - Pipeline system of fire engine - Google Patents
Pipeline system of fire engine Download PDFInfo
- Publication number
- CN105396242A CN105396242A CN201510963387.5A CN201510963387A CN105396242A CN 105396242 A CN105396242 A CN 105396242A CN 201510963387 A CN201510963387 A CN 201510963387A CN 105396242 A CN105396242 A CN 105396242A
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- pipe
- foam
- fire
- siphunculus
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C27/00—Fire-fighting land vehicles
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a pipeline system of a fire engine, relating to the technical field of fire engines. The pipeline system structurally comprises a fire pump, at least two water inlet pipes and at least two water outlet pipes, wherein the at least two water inlet pipes are arranged at a water inlet of the fire pump; the at least two water outlet pipes are arranged at a water outlet of the fire pump; the water inlet of the fire pump is communicated with the water inlet pipes through a first multi-way pipe; the water outlet of the fire pump is communicated with the water outlet pipes through a second multi-way pipe; the plurality of water inlet pipes, the fire pump and the plurality of water outlet pipes can be assembled into a water pipeline system by only arranging the first multi-way pipe and the second multi-way pipe; a foam mixer is arranged between the water outlet of the fire pump and the second multi-way pipe, and furthermore the water pipeline system and a foam pipeline system are integrated; and foam can be automatically guided into the pipeline system of the fire engine, so that the whole pipeline system of the fire engine is more compact in structure, small in occupied space and capable of conveniently realizing vehicle-mounted transportation and firefighting operation, and furthermore the firefighting performance of the fire engine is improved.
Description
Technical field
The present invention relates to fire fighting truck technical field, be specifically related to a kind of fire fighting truck pipe-line system.
Background technology
The pipe-line system of fire fighting truck generally comprises fire pump, be arranged on the water inlet pipe of the water inlet of fire pump and be arranged on the outlet pipe of delivery port of fire pump, water source enters fire pump by water inlet pipe, after the pressurization of fire pump, water under high pressure enters hydraulic giant or fire monitor through outlet pipe, and then is got by water for fire extinguishing.
Existing fire fighting truck, for strengthening its fire-fighting performance and extinguishing ability, multiple water inlet pipe and multiple outlet pipe is generally provided with at the water inlet of fire pump and delivery port, and be for burning things which may cause a fire disaster of different nature, also in original water piping system, adds additional foam pipeline system, so just need to adopt multiple three-way connection, the whole pipe-line system of fire fighting truck assembles by elbow and complicated welding procedure, not only the packaging efficiency of whole pipe-line system is lower, and make the topology layout of whole pipe-line system compact not, take up room large, be not easy to vehicle-mounted transport and drill, when the fire extinguishing such as water or foam mixing liquid solvent flows through existing pipe-line system in addition, larger along stroke pressure loss, affect the fire-fighting performance of fire fighting truck.
In addition, fire fighting truck, after use foam mixing liquid is put out a fire, needs to rinse the pipe-line system that foam mixing liquid flows through in time, in case the blocking of pipe-line system.Existing pipe-line system is rinsed and is utilized ambient pressure to be pressed in pipe-line system by external source more, and then rinses pipe-line system, is not easy to so very much the operation of flushing, and when can not rinse pipe-line system in time without when external source.
Summary of the invention
The object of the invention is to for deficiency of the prior art, and a kind of compact conformation, convenient operation, fire fighting truck pipe-line system that fire-fighting performance is good are provided.
Object of the present invention is achieved through the following technical solutions:
A kind of fire fighting truck pipe-line system is provided, comprise fire pump, be located at least two water inlet pipes of the water inlet of described fire pump and be located at least two outlet pipes of delivery port of described fire pump, the water inlet of described fire pump is communicated with each water inlet pipe by siphunculus more than first, the delivery port of described fire pump is communicated with each outlet pipe by siphunculus more than second, delivery port and the described pipeline more than second between siphunculus of described fire pump are provided with foam mixer, and described foam mixer includes the foam be communicated with the water inlet of described fire pump and is automatically imported system.
Wherein, described foam is automatically imported system and comprises foam ingress pipe, Venturi tube and for carrying the foam main of foam, described foam ingress pipe is communicated with the delivery port of described siphunculus more than first and described Venturi tube, the water inlet of described Venturi tube is communicated with the delivery port of described fire pump, and the foam mouth of described Venturi tube is communicated with described foam main.
Wherein, described foam ingress pipe is provided with and stops the foam of its conducting to import valve.
Wherein, described foam main is provided with and controls the flow control valve of flow, described flow control valve be located at described in state in foam mixer.
Wherein, described fire fighting truck pipe-line system also comprises auto-flushing pipe, and described auto-flushing pipe is communicated with water inlet pipe and described foam main.
Wherein, described siphunculus more than first is cast aluminium three-way pipe, first mouth of pipe of described siphunculus more than first is communicated with the water inlet of described fire pump, second mouth of pipe, the 3rd mouth of pipe of described siphunculus more than first are communicated with corresponding water inlet pipe respectively, and the circulating face that described siphunculus more than first is transitioned into described first mouth of pipe respectively from described second mouth of pipe and described 3rd mouth of pipe is all smoothly arranged in ellipse arc.
Wherein, described siphunculus more than first is also provided with the 4th mouth of pipe, and described 4th mouth of pipe is communicated with described foam ingress pipe.
Wherein, described water inlet pipe comprises the outer suction hose that can absorb water from external water source and the tank suction hose that can absorb water in water pot.
Wherein, described siphunculus more than second is cast aluminium six siphunculus, the first interface of described siphunculus more than second is communicated with the delivery port of described foam mixer, other interfaces of described siphunculus more than second are communicated with corresponding outlet pipe respectively, and described siphunculus more than second is transitioned into other interfaces of described siphunculus more than second respectively circulating face from described first interface is all smoothly arranged in ellipse arc.
Wherein, described outlet pipe comprise be communicated with fire-extinguishing apparatus pressure water pipe, for self-insurance self-insurance outlet pipe, be communicated with fire monitor fire monitor outlet pipe and for toward the tank water injection pipe of water pot water filling.
Beneficial effect of the present invention:
A kind of fire fighting truck pipe-line system of the present invention, by means of only arranging siphunculus more than first and the siphunculus more than two of siphunculus more than second can by multiple water inlet pipe, fire pump and multiple outlet pipe are assembled into water piping system, easy to assembly, and by arranging foam mixer at the delivery port of fire pump and the pipeline more than second between siphunculus, and then water piping system and foam pipeline system are integrated, and automatically foam can be imported fire fighting truck pipe-line system, this makes whole fire fighting truck pipe-line system structure more compact, take up room little, be convenient to vehicle-mounted transport and drill, and then strengthen the fire-fighting performance of fire fighting truck.
Accompanying drawing explanation
The invention will be further described to utilize accompanying drawing, but the embodiment in accompanying drawing does not form any limitation of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, can also obtain other accompanying drawing according to the following drawings.
Fig. 1 is the structural representation at a visual angle of a kind of fire fighting truck pipe-line system of the present invention.
Fig. 2 is the structural representation at another visual angle of a kind of fire fighting truck pipe-line system of the present invention.
Fig. 3 is the structural representation at a visual angle of the foam pipeline system of a kind of fire fighting truck pipe-line system of the present invention.
Fig. 4 is the structural representation at another visual angle of the foam pipeline system of a kind of fire fighting truck pipe-line system of the present invention.
Fig. 5 is the structural representation of the cast aluminium three-way pipe of a kind of fire fighting truck pipe-line system of the present invention.
Fig. 6 is the structural representation of cast aluminium six siphunculus of a kind of fire fighting truck pipe-line system of the present invention.
Fig. 7 is the fundamental diagram of a kind of fire fighting truck pipe-line system of the present invention.
Include in Fig. 1 to Fig. 7:
1-fire pump;
2-cast aluminium three-way pipe, 21-first mouth of pipe, 22-second mouth of pipe, 23-the 3rd mouth of pipe, 24-the 4th mouth of pipe;
3-cast aluminium six siphunculus, 31-first interface, 32-second interface, 33-the 3rd interface, 34-the 4th interface, 35-the 5th interface;
The outer suction hose of 4-first;
The outer suction hose of 5-second;
6-tank suction hose;
7-foam mixer;
8-foam ingress pipe, 81-foam import valve;
9-foam main;
Foamed pipe inhaled by 10-tank;
11-inhales foamed pipe outward;
12-auto-flushing pipe;
13-first pressure water pipe;
14-second pressure water pipe;
15-fire monitor outlet pipe;
16-self-insurance outlet pipe;
17-tank water injection pipe.
Detailed description of the invention
The invention will be further described with the following Examples.
The detailed description of the invention of a kind of fire fighting truck pipe-line system of the present invention, as depicted in figs. 1 and 2, comprise fire pump 1, cast aluminium six siphunculus 3 of the cast aluminium three-way pipe 2 being located at the water inlet of fire pump 1 and the delivery port being located at fire pump 1, wherein, first mouth of pipe 21 of cast aluminium three-way pipe 2 is communicated with the water inlet of fire pump 1, second mouth of pipe 22 of cast aluminium three-way pipe 2 is communicated with the first outer suction hose 4, 3rd mouth of pipe 23 of cast aluminium three-way pipe 2 is communicated with the second outer suction hose 5, the end of the first outer suction hose 4 and the second outer suction hose 5 is equipped with outer water suction interface, outer water suction interface is communicated with external source by soft suction hose, as shown in Figure 7 (in figure, arrow indicates the flow direction of water), open the outer suction valve be located on the first outer suction hose 4 and the second outer suction hose 5, start fire pump 1, namely fire pump 1 can absorb water from external source.First outer suction hose 4 is also communicated with the tank suction hose 6 that can absorb water in water pot, and the end of tank suction hose 6 is communicated with water pot, and tank suction hose 6 is provided with tank suction valve, opens tank suction valve, and start fire pump 1, namely fire pump 1 can absorb water from water pot.
As shown in Figure 5, the circulating face that cast aluminium three-way pipe 2 is transitioned into first mouth of pipe 21 respectively from second mouth of pipe 22 and the 3rd mouth of pipe 23 is that ellipse arc is smoothly arranged, the pressure loss of current when cast aluminium three-way pipe 2 can be effectively reduced like this, and then make hydraulic performance good, strengthen the fire-fighting performance of fire fighting truck.
As shown in Figure 3 and Figure 4, foam mixer 7 is also provided with between cast aluminium six siphunculus 3 and the water inlet of fire pump 1, foam mixer 7 includes the foam be communicated with the water inlet of fire pump 1 and is automatically imported system, concrete, as shown in Figure 7 (in figure, arrow indicates the flow direction of water or foam or foam mixing liquid), foam mixer 7 is built-in with Venturi tube, foam ingress pipe 8 is provided with between the delivery port of Venturi tube and the 4th mouth of pipe 24 of cast aluminium three-way pipe 2, foam ingress pipe 8 is provided with and stops the foam of its conducting to import valve 81, the water inlet of Venturi tube is communicated with the delivery port of fire pump 1, the foam mouth of Venturi tube is communicated with the foam main 9 for carrying foam, open foam and import valve 81, start fire pump 1, the partial high pressure water of the delivery port of fire pump 1 is back to the water inlet of fire pump 1 through Venturi tube and foam ingress pipe 8, and then vacuum is formed in Venturi tube, the foam in foam main 9 is made automatically to be drawn onto the water inlet of fire pump 1, foam enters fire pump 1 together with water, fully mix through the vane rotary of fire pump 1 and become foam mixing liquid, foam mixing liquid enters cast aluminium six siphunculus 3 through foam mixer 7, and then flow into the multiple pressure water pipes be communicated with cast aluminium six siphunculus 3.
As shown in Figure 7, foam main 9 is provided with the flow control valve and check valve that control flow, this flow control valve is located in foam mixer 7, the opening degree of this flow control valve is controlled by the water yield flowing through foam mixer 7, when the water yield flowing through foam mixer 7 is larger, the aperture of flow control valve is larger, and then make more foams be inhaled into the water inlet of fire pump 1, when the water yield flowing through foam mixer 7 is less, the aperture of flow control valve is less, like this by automatically regulating foam flow to make foam mixing liquid remain in certain concentration range, guarantee extinguishing effect.Check valve flows backwards for the foam placed in foam main 9.
As shown in Figure 3 and Figure 4, the end of foam main 9 is inhaled foamed pipe 10 by tank and is communicated with foam tank, and the end of foam main 9 also connects extraneous Foam Container by outer suction foamed pipe 11, as shown in Figure 7, tank is inhaled foamed pipe 10 and is provided with tank suction foam valve, and outer suction foamed pipe 11 is provided with outer suction foam valve.When using the foam in foam tank, open foam and import valve 81 and tank suction foam valve, foam valve is inhaled outside closing, because the partial high pressure water of the delivery port of fire pump 1 to be back to the water inlet of fire pump 1 through Venturi tube and foam ingress pipe 8, and then vacuum is formed in Venturi tube, make the foam in foam tank be drawn onto the water inlet of fire pump 1 by tank suction foamed pipe 10 and foam main 9, and then enter foam mixer 7 after foam is mixed with water.When using the foam in extraneous Foam Container, the outer suction foam interface inhaling foamed pipe 11 outside connects one end of pipette, and the other end of pipette is inserted in extraneous Foam Container, open foam and import valve 81 and outer suction foam valve, close tank and inhale foam valve, the same partial high pressure water due to the delivery port of fire pump 1 is back to the water inlet of fire pump 1 through Venturi tube and foam ingress pipe 8, and then vacuum is formed in Venturi tube, the foam in extraneous Foam Container is made to be drawn onto the water inlet of fire pump 1 by outer suction foamed pipe 11 and foam main 9, and then enter foam mixer 7 after foam is mixed with water.
As shown in Figures 2 and 3, fire fighting truck pipe-line system also comprises auto-flushing pipe 12, auto-flushing pipe 12 is communicated with the first outer suction hose 4 and outer suction foamed pipe 11, and the connectivity part of auto-flushing pipe 12 and outer suction foamed pipe 11 is near the outer suction foam interface of outer suction foamed pipe 11, to rinse whole outer suction foamed pipe 11.As shown in Figure 7, auto-flushing pipe 12 is provided with automatic flush valve, when needs flushing line system, close outer suction foam valve and tank suction foam valve, open automatic flush valve and foam importing valve 81, because the partial high pressure water of the delivery port of fire pump 1 to be back to the water inlet of fire pump 1 through Venturi tube and foam ingress pipe 8, and then vacuum is formed in Venturi tube, clean water in first outer suction hose 4 will by auto-flushing pipe 12, outer suction foamed pipe 11 and foam main 9 are drawn onto in Venturi tube, and then be back to the water inlet of fire pump 1, each pressure water pipe is flow to from foam mixer 7 and cast aluminium six siphunculus 3 after fire pump 1 pressurizes, thus automatically, in time the residual foam in whole pipe-line system is all rinsed well, that not only rinses is effective, and it is simple to operate, convenient.
As Fig. 1, shown in Fig. 2 and Fig. 6, the first interface 31 of cast aluminium six siphunculus 3 is communicated with the delivery port of foam mixer 7, second interface 32 and the first pressure water pipe 13 of cast aluminium six siphunculus 3, 3rd interface 33 and the second pressure water pipe 14 of cast aluminium six siphunculus 3, the equal chain of end of the first pressure water pipe 13 and the second pressure water pipe 14 is connected to pressure water interface, a pressure water pipe can be connected to multiple pressure water interface, pressure water interface is communicated with the fire-extinguishing apparatus such as hydraulic giant by water-band, first pressure water pipe 13 and the second pressure water pipe 14 are equipped with manual pressure water valve, open whole pressure water valve, from the first interface 31 of foam mixer 7 water under high pressure out through cast aluminium six siphunculus 3, second interface 32 and the 3rd interface 33 arrive the first pressure water pipe 13 and the second pressure water pipe 14 respectively, spray through water-band and then from the fire-extinguishing apparatus such as hydraulic giant again.4th interface 34 of cast aluminium six siphunculus 3 is communicated with fire monitor outlet pipe 15, fire monitor outlet pipe 15 is provided with fire monitor outlet valve, open fire monitor outlet valve, water under high pressure arrives fire monitor outlet pipe 15 through the first interface 31 of cast aluminium six siphunculus 3 and the 4th interface 34, and then arriving the fire monitor be communicated with fire monitor outlet pipe 15, water under high pressure is got through fire monitor.5th interface 35 of cast aluminium six siphunculus 3 is communicated with self-insurance outlet pipe 16 and tank water injection pipe 17, and self-insurance outlet pipe 16 is provided with self-insurance outlet valve, and tank water injection pipe 17 is provided with tank water injection valve.Open self-insurance outlet valve, water under high pressure sprays through self-insurance outlet pipe 16 and carries out self-insurance to whole fire fighting truck.Open tank water injection valve, the water drawn from external source flows into cast aluminium six siphunculus 3 after fire pump 1 pressurizes, and is injected in water pot through water by tank water injection pipe 17.
Cast aluminium six siphunculus 3 is also provided with the 6th interface, and the 6th interface is standby interface, at normal state, 6th interface is closed state, when needing to increase extra pressure water pipe, directly pressure water pipe can be connected on the 6th interface, and then strengthen the extinguishing property of fire fighting truck.
As shown in Figure 6, cast aluminium six siphunculus 3 from first interface 31 be transitioned into respectively the second interface 32, the 3rd interface 33, the 4th interface 34, the 5th interface 35 circulating face all smoothly arrange in ellipse arc, the pressure loss of current when cast aluminium six siphunculus 3 can be effectively reduced like this, and then make hydraulic performance good, strengthen the fire-fighting performance of fire fighting truck.
In the present embodiment, the present invention enters by arranging cast aluminium three-way pipe 2 and cast aluminium six siphunculus siphunculus more than 3 two can by multiple outer suction hose, fire pump 1 and multiple pressure water pipe are assembled into water piping system, and foam mixer 7 is set by the pipeline between the delivery port and cast aluminium six siphunculus 3 of fire pump 1, and then water piping system and foam pipeline system are integrated, and can realize automatically foam being imported fire fighting truck pipe-line system, this not only makes whole fire fighting truck pipe-line system structure more compact, take up room little, be convenient to vehicle-mounted transport and drill, and the flow process flowing through whole pipe-line system due to fire extinguishing solvent shortens and cast aluminium six siphunculus 3, the circulating face of cast aluminium six siphunculus 3 is that ellipse arc is smoothly arranged, make fire extinguishing solvent less along the pressure loss of journey, strengthen the fire-fighting performance of fire fighting truck, in addition, the present invention can be automatic by auto-flushing pipe 12, in time the residual foam in whole pipe-line system is all rinsed well, that not only rinses is effective, and it is simple to operate, convenient.
Finally should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; although done to explain to the present invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to technical scheme of the present invention or equivalent replacement, and not depart from essence and the scope of technical solution of the present invention.
Claims (10)
1. a fire fighting truck pipe-line system, comprise fire pump, be located at least two water inlet pipes of the water inlet of described fire pump and be located at least two outlet pipes of delivery port of described fire pump, it is characterized in that: the water inlet of described fire pump is communicated with each water inlet pipe by siphunculus more than first, the delivery port of described fire pump is communicated with each outlet pipe by siphunculus more than second, delivery port and the described pipeline more than second between siphunculus of described fire pump are provided with foam mixer, and described foam mixer includes the foam be communicated with the water inlet of described fire pump and is automatically imported system.
2. a kind of fire fighting truck pipe-line system according to claim 1, it is characterized in that: described foam is automatically imported system and comprises foam ingress pipe, Venturi tube and for carrying the foam main of foam, described foam ingress pipe is communicated with the delivery port of described siphunculus more than first and described Venturi tube, the water inlet of described Venturi tube is communicated with the delivery port of described fire pump, and the foam mouth of described Venturi tube is communicated with described foam main.
3. a kind of fire fighting truck pipe-line system according to claim 2, is characterized in that: described foam ingress pipe is provided with and stops the foam of its conducting to import valve.
4. a kind of fire fighting truck pipe-line system according to claim 2, is characterized in that: described foam main is provided with and controls the flow control valve of flow, described flow control valve be located at described in state in foam mixer.
5. a kind of fire fighting truck pipe-line system according to claim 2, is characterized in that: described fire fighting truck pipe-line system also comprises auto-flushing pipe, and described auto-flushing pipe is communicated with water inlet pipe and described foam main.
6. a kind of fire fighting truck pipe-line system according to claim 1, it is characterized in that: described siphunculus more than first is cast aluminium three-way pipe, first mouth of pipe of described siphunculus more than first is communicated with the water inlet of described fire pump, second mouth of pipe, the 3rd mouth of pipe of described siphunculus more than first are communicated with corresponding water inlet pipe respectively, and the circulating face that described siphunculus more than first is transitioned into described first mouth of pipe respectively from described second mouth of pipe and described 3rd mouth of pipe is all smoothly arranged in ellipse arc.
7. a kind of fire fighting truck pipe-line system according to claim 2, is characterized in that: described siphunculus more than first is provided with the 4th mouth of pipe, described 4th mouth of pipe is communicated with described foam ingress pipe.
8. a kind of fire fighting truck pipe-line system according to claim 1, is characterized in that: described water inlet pipe comprises can from the outer suction hose of external water source water suction and the tank suction hose that can absorb water in water pot.
9. a kind of fire fighting truck pipe-line system according to claim 1, it is characterized in that: described siphunculus more than second is cast aluminium six siphunculus, the first interface of described siphunculus more than second is communicated with the delivery port of described foam mixer, other interfaces of described siphunculus more than second are communicated with corresponding outlet pipe respectively, and described siphunculus more than second is transitioned into other interfaces of described siphunculus more than second respectively circulating face from described first interface is all smoothly arranged in ellipse arc.
10. a kind of fire fighting truck pipe-line system according to claim 1, is characterized in that: described outlet pipe comprise be communicated with fire-extinguishing apparatus pressure water pipe, for self-insurance self-insurance outlet pipe, be communicated with fire monitor fire monitor outlet pipe and for toward the tank water injection pipe of water pot water filling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510963387.5A CN105396242A (en) | 2015-12-21 | 2015-12-21 | Pipeline system of fire engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510963387.5A CN105396242A (en) | 2015-12-21 | 2015-12-21 | Pipeline system of fire engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105396242A true CN105396242A (en) | 2016-03-16 |
Family
ID=55462207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510963387.5A Pending CN105396242A (en) | 2015-12-21 | 2015-12-21 | Pipeline system of fire engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105396242A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331701A (en) * | 2018-04-10 | 2018-07-27 | 浙江华佑机械科技有限公司 | Fire fighting extinguisher with the hydraulic turbine and foam pump |
| CN108619645A (en) * | 2018-05-04 | 2018-10-09 | 捷达消防科技（苏州）股份有限公司 | Foam truck with uninterrupted feed flow function |
| CN110152227A (en) * | 2019-05-25 | 2019-08-23 | 浙江华球机械制造有限公司 | Intelligent mobile fire extinguishing system |
| CN110683223A (en) * | 2019-10-31 | 2020-01-14 | 安徽省国发石化设备有限责任公司 | Multi-channel connecting valve for tank body of central drainage system of floating roof storage tank |
| CN113509676A (en) * | 2021-05-09 | 2021-10-19 | 鞍山衡业专用汽车制造有限公司 | Water pipeline for fire-fighting robot capable of reducing water inlet pressure loss and improving chassis strength |
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| CN108331701A (en) * | 2018-04-10 | 2018-07-27 | 浙江华佑机械科技有限公司 | Fire fighting extinguisher with the hydraulic turbine and foam pump |
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| CN110683223A (en) * | 2019-10-31 | 2020-01-14 | 安徽省国发石化设备有限责任公司 | Multi-channel connecting valve for tank body of central drainage system of floating roof storage tank |
| CN110683223B (en) * | 2019-10-31 | 2021-11-16 | 安徽省国发石化设备有限责任公司 | Multi-channel connecting valve for tank body of central drainage system of floating roof storage tank |
| CN113509676A (en) * | 2021-05-09 | 2021-10-19 | 鞍山衡业专用汽车制造有限公司 | Water pipeline for fire-fighting robot capable of reducing water inlet pressure loss and improving chassis strength |
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Application publication date: 20160316 |
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| RJ01 | Rejection of invention patent application after publication |