CN112982573B - Self-draining fire hydrant structure and fire well comprising same - Google Patents
Self-draining fire hydrant structure and fire well comprising same Download PDFInfo
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- CN112982573B CN112982573B CN202110257622.2A CN202110257622A CN112982573B CN 112982573 B CN112982573 B CN 112982573B CN 202110257622 A CN202110257622 A CN 202110257622A CN 112982573 B CN112982573 B CN 112982573B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 160
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 230000008014 freezing Effects 0.000 claims description 4
- 238000007710 freezing Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B9/00—Methods or installations for drawing-off water
- E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B9/00—Methods or installations for drawing-off water
- E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
- E03B9/14—Draining devices for hydrants
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Domestic Plumbing Installations (AREA)
- Sink And Installation For Waste Water (AREA)
Abstract
The invention relates to a self-draining fire hydrant structure which comprises a water outlet vertical pipe and a side water outlet connector arranged on the side part of the water outlet vertical pipe, wherein a one-way air inlet valve is arranged at the top of the water outlet vertical pipe, a water outlet switch is arranged at the bottom of the water outlet vertical pipe or on a horizontal water conveying pipeline connected with the water outlet vertical pipe, a horizontal water draining pipe is arranged at the bottom of the water outlet vertical pipe, a vertical water draining pipe is upwards connected with the other end of the horizontal water draining pipe, and the outlet end of the vertical water draining pipe is connected with a water draining mechanism. When the fire hydrant is not in operation, the water outlet switch is closed, the water discharging mechanism is started, the one-way air inlet valve at the top of the water outlet vertical pipe starts to inlet air, accumulated water in the water outlet vertical pipe can be emptied in time, and the water outlet vertical pipe is prevented from being frozen. The invention also provides a fire well comprising the self-draining fire hydrant structure.
Description
Technical Field
The invention relates to the technical field of fire control, in particular to a self-drainage type fire hydrant structure and a fire well comprising the same.
Background
In northern weather, a large number of fire hydrants are arranged in large-scale oil refineries and large-scale industrial enterprises, residual water exists in the water outlet vertical pipe of the fire hydrants after the fire hydrants are used, and the water outlet vertical pipe of the fire hydrants is frozen out due to the existence of the residual water.
The normal use of the hydrant can be affected after the water outlet vertical pipe is frozen.
Disclosure of Invention
The invention aims to solve the technical problems that: the invention provides a drainage mechanism of a fire well, which can timely drain residual water in a water outlet vertical pipe after a fire hydrant is used, so as to avoid the frost damage of the fire hydrant.
The utility model provides a from drainage formula fire hydrant structure, includes out water riser and sets up in the side water outlet connector of play water riser lateral part, and the top of play water riser is provided with one-way admission valve, is provided with out water switch on the bottom of play water riser or the horizontal conduit who is connected with play water riser, and the bottom of play water riser is provided with horizontal drain pipe, and the other end of horizontal drain pipe upwards is connected with vertical drain pipe, and drainage mechanism is connected to the exit end of vertical drain pipe.
Preferably, a check valve is provided in the middle of the lateral drain pipe.
Preferably, the inlet of the transverse drain pipe is provided with a dreg filter screen.
Preferably, the water outlet switch is an electromagnetic switch, and when the water draining mechanism drains water, the electromagnetic switch is controlled by an electromagnetic signal to close the water outlet switch; the water draining mechanism is controlled by electromagnetic signals, and the water outlet vertical pipe is controlled by electromagnetic signals; after the fire-fighting water is discharged through the water outlet vertical pipe, the water outlet switch is closed, and the water draining mechanism starts water draining.
Preferably, the bottom of the water outlet vertical pipe is provided with a pressure sensor, and the pressure sensor and the transverse water discharge pipe are arranged at the level position in the horizontal direction.
Preferably, the side part of the water outlet vertical pipe is provided with a water discharge connecting pipe, and the water discharge connecting pipe is used for connecting an air pump, a liquid nitrogen tank or a hot air pipe; the hot air pipe generates hot air when the drainage mechanism drains water, so that water in the water outlet vertical pipe is prevented from freezing.
Preferably, the drainage mechanism comprises a main cavity, a crank, a gear driving mechanism and fan blades, and a water suction pipe interface is arranged at the bottom of the main cavity; the water suction pipe interface is connected with a vertical drain pipe;
the side part or the upper part of the main cavity is provided with a water outlet pipe interface, and the peripheral side of the main cavity is provided with a supporting structure;
The crank drives the fan blade to rotate through the gear driving mechanism, the fan blade forms negative pressure on one side of the water suction pipe interface, and the fan blade forms positive pressure on one side of the water outlet pipe interface.
Preferably, the device also comprises an eccentric wheel, a rear end cover and a front bracket, wherein the gear driving mechanism comprises a first driving shaft, a main driving large gear and a driven small gear;
the eccentric wheel comprises a rear supporting rod, a main rotating disc and a front supporting rod which are fixedly connected, and a fan blade passing groove is formed in the middle of the main rotating disc;
The fan blade comprises two blade plates connected in the same direction, and the two blade plates are connected through an elastic structure; the fan blade passes through the fan blade passing groove;
The rear end cover is fixed at the rear part of the main cavity, the rear supporting rod is rotatably supported on the rear end cover, the front supporting rod is rotatably supported on the front bracket, and the front bracket is arranged at the front part of the main cavity;
the first driving shaft is arranged on one side of the front bracket, and the main driving large gear is sleeved on the first driving shaft; the driven pinion is sleeved on the front support rod, and the main driving large gear is meshed with the driven pinion.
Preferably, the crank is arranged on the first driving shaft;
The crank drives the first driving shaft to rotate, the first driving shaft drives the main driving large gear to rotate, and the main driving large gear drives the driven small gear to rotate; the driven pinion drives the main turntable to rotate through the front support rod; the main turntable drives the fan blades to rotate; in the rotation process of the main turntable;
the main turntable takes the first driving shaft as the shaft to generate eccentric rotation eccentric relative to the main cavity, and the distance between two ends of two blade plates at two sides and the inner wall of the main cavity is 1-20 mm;
Under the action of the fan blades and the main rotary disk, negative pressure is formed at one side of the water suction pipe interface, and positive pressure is formed at one side of the water outlet pipe interface.
A fire well comprises the self-draining fire hydrant structure.
The beneficial effects of the invention are as follows: the utility model provides a from drainage formula fire hydrant structure, includes out water riser and sets up in the side water outlet connector of play water riser lateral part, and the top of play water riser is provided with one-way admission valve, is provided with out water switch on the bottom of play water riser or the horizontal conduit who is connected with play water riser, and the bottom of play water riser is provided with horizontal drain pipe, and the other end of horizontal drain pipe upwards is connected with vertical drain pipe, and drainage mechanism is connected to the exit end of vertical drain pipe. When the fire hydrant is not in operation, the water outlet switch is closed, the water discharging mechanism is started, the one-way air inlet valve at the top of the water outlet vertical pipe starts to inlet air, accumulated water in the water outlet vertical pipe can be emptied in time, and the water outlet vertical pipe is prevented from being frozen. The invention also provides a fire well comprising the self-draining fire hydrant structure.
Drawings
The drainage mechanism of the fire well of the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a fire well including a self-draining hydrant structure according to the present invention.
Fig. 2 is a schematic view of a fire well removal well body incorporating a self-draining hydrant structure according to the present invention.
Fig. 3 is an exploded view of a drainage structure of the self-draining hydrant structure of the present invention.
Fig. 4 is a schematic structural view of an eccentric wheel of a drainage structure of the self-drainage hydrant structure of the present invention.
Fig. 5 is a schematic structural view of a front bracket of a drainage structure of the self-drainage hydrant structure of the present invention.
In the figure:
1-a water outlet vertical pipe; 11-side water outlet interface; 12-one-way intake valve; 13-a drain connection; 2-a water outlet switch; 3-a transverse drain pipe; 4-a vertical drain pipe; 5-a drainage mechanism; 51-a main cavity; 511-a suction tube interface; 512-outlet pipe interface; 513-a support structure; 52-crank; 53-a gear drive mechanism; 531-main drive bull gear; 532—passive pinion; 533-a first drive shaft; 54-fan blades; 541-blade plate; 55-eccentric wheel; 551-rear struts; 552-a main carousel; 5521-passing through the groove; 553, a front strut; 56-a rear end cap; 57-front rack; 6-check valve; 7-dreg filtering net; 8-a pressure sensor; 00-automatic water filling valve; 01-well body.
Detailed Description
The drainage mechanism of the fire-fighting well according to the present invention will be further described with reference to fig. 1 to 5.
The utility model provides a self-draining fire hydrant structure, includes water riser 1 and sets up in the side water outlet interface 11 of water riser 1 lateral part, and the top of water riser 1 is provided with one-way admission valve 12, is provided with out water switch 2 on the bottom of water riser 1 or the horizontal conduit who is connected with water riser 1, and the bottom of water riser 1 is provided with horizontal drain pipe 3, and the other end of horizontal drain pipe 3 upwards is connected with vertical drain pipe 4, and drainage mechanism 5 is connected to the exit end of vertical drain pipe 4.
In this embodiment, the middle part of the lateral drain pipe 3 is provided with a check valve 6.
After the hydrant is used, accumulated water in the water outlet vertical pipe 1 is discharged through the drainage mechanism 5, so that residual water in the water outlet vertical pipe 1 is avoided, the frost damage phenomenon of the water outlet vertical pipe 1 is avoided, and the safety of the hydrant is ensured.
In this embodiment, the inlet of the lateral drain pipe 3 is provided with a dreg filter screen 7. When the hydrant has corrosive impurities, the fire hydrant is filtered through the dreg filter screen 7.
In this embodiment, the water outlet switch 2 is an electromagnetic switch, and when the water draining mechanism 5 drains water, the electromagnetic switch is controlled by an electromagnetic signal to close the water outlet switch 2; the water draining mechanism 5 is controlled by electromagnetic signals, and the water outlet vertical pipe 1 is controlled by electromagnetic signals; after the fire-fighting water is discharged by closing the water outlet vertical pipe 1, the water outlet switch 2 is closed, and the water discharging mechanism 5 starts water discharging.
The water outlet switch 2 can also be set to be in a normally open mode, an automatic water filling valve 00 is arranged at the upper part of the water outlet switch, and after the fire water faucet of the water outlet vertical pipe 1 is connected, pressurized water filling is started.
Through electromagnetic signal, realize the initiative from the drainage, after the fire hydrant stops using, initiatively close water switch 2, start drainage mechanism 5 simultaneously and begin the drainage, avoid the freezing icing of the residual water of water riser 1 the inside.
In this embodiment, the bottom of the water outlet riser 1 is provided with a pressure sensor 8, and the pressure sensor 8 and the lateral drain pipe 3 are arranged at a level position in the horizontal direction. With this design, we ensure that the drainage of the drainage mechanism 5 reaches a level with the lateral drain pipe 3.
In another case, the pressure sensor 8 can be arranged on one side of the water outlet switch 2 before water outlet, so that the pressure in the pipeline can be conveniently detected, and the remote monitoring of fire control is convenient.
In the embodiment, the side part of the water outlet vertical pipe 1 is provided with a water discharge connecting pipe 13, and the water discharge connecting pipe 13 is used for connecting an air pump, a liquid nitrogen tank or a hot air pipe; the hot air pipe generates hot air when the water drainage mechanism 5 drains water, so that water in the water outlet vertical pipe 1 is prevented from freezing.
The hot air pipe is of a single heating type, and can generate steam, so that water in the water outlet vertical pipe 1 can be discharged cleanly.
In this embodiment, the drainage mechanism 5 includes a main cavity 51, a crank 52, a gear driving mechanism 53 and fan blades 54, and a water suction pipe connector 511 is arranged at the bottom of the main cavity 51; the suction pipe connector 511 is connected with a vertical drain pipe 4;
A water outlet pipe interface 512 is arranged on the side part or the upper part of the main cavity 51, and a supporting structure 513 is arranged on the periphery side of the main cavity 51;
the crank 52 drives the fan blade 54 to rotate through the gear driving mechanism 53, the fan blade 54 forms negative pressure on one side of the water suction pipe interface 511, and the fan blade 54 forms positive pressure on one side of the water outlet pipe interface 512.
In this embodiment, further comprising an eccentric 55, a rear end cap 56 and a front bracket 57, the gear drive mechanism 53 comprises a first drive shaft 533, a main drive gearwheel 531 and a passive pinion 532;
The eccentric wheel 55 comprises a rear supporting rod 551, a main rotating disc 552 and a front supporting rod 553 which are fixedly connected, and a fan blade passing groove 5521 is formed in the middle of the main rotating disc 552;
The fan 54 comprises two blade plates 541 connected in the same direction, and the two blade plates 541 are connected by an elastic structure; the fan blade 54 passes through the fan blade passing groove 5521;
The rear end cover 56 is fixed at the rear part of the main cavity 51, the rear supporting rod 551 is rotatably supported on the rear end cover 56, the front supporting rod 553 is rotatably supported on the front bracket 57, and the front bracket 57 is arranged at the front part of the main cavity 51;
the first driving shaft 533 is disposed at one side of the front bracket 57, and the main driving gearwheel 531 is sleeved on the first driving shaft 533; the passive pinion 532 is sleeved on the front strut 553, and the main driving large gear 531 is meshed with the passive pinion 532.
In this embodiment, the crank 52 is disposed on the first drive shaft 533;
The crank 52 drives the first driving shaft 533 to rotate, the first driving shaft 533 drives the main driving large gear 531 to rotate, and the main driving large gear 531 drives the driven small gear 532 to rotate; the driven pinion 532 drives the main turntable 552 to rotate through the front support rod 553; the main turntable 552 drives the fan blades 54 to rotate; during rotation of the main dial 552;
the main turntable 552 generates eccentric rotation with respect to the main cavity 51 by taking the first driving shaft 533 as an axis, and the distance between two ends of the two blade plates 541 on two sides and the inner wall of the main cavity 51 is 1-20 mm;
the fan blade 54 and the main rotary disk 552 are operated to form negative pressure on one side of the suction pipe interface 511 and positive pressure on one side of the discharge pipe interface 512.
In the present embodiment, the front bracket 57 includes a gear box 571 and a gear cover 572, the gear box 571 being fixed to the front side of the main cavity 51; the front side of the gear box 571 extends out of the gear cavity, and the main driving large gear 531 and the driven small gear 532 are arranged in the gear cavity;
the gear cover 572 is disposed at a front side of the gear chamber;
the gear cover 572 is provided with a shaft hole 5721 and a front strut support blind hole 5722; first drive shaft 533 is rotatably supported within shaft bore 5721 and front strut 553 is rotatably supported within front strut support blind bore 5722.
A fire-fighting well, comprising a well body 01 and the self-draining fire hydrant structure. Through the self-draining fire hydrant structure, safe and effective operation of the fire well can be realized.
The technical solutions of the above embodiments of the present invention can be cross-combined with each other to form a new technical solution, and in addition, all technical solutions formed by equivalent substitution fall within the scope of protection claimed by the present invention.
Claims (7)
1. The utility model provides a self-draining fire hydrant structure, includes play water riser (1) and sets up in the side water outlet connector (11) of play water riser (1) lateral part, a serial communication port, the top of play water riser (1) is provided with one-way admission valve (12), be provided with out water switch (2) on the bottom of play water riser (1) or the horizontal conduit who is connected with play water riser (1), the bottom of play water riser (1) is provided with horizontal drain pipe (3), the other end of horizontal drain pipe (3) upwards is connected with vertical drain pipe (4), drainage mechanism (5) are connected to the exit end of vertical drain pipe (4); a drainage connecting pipe (13) is arranged at the side part of the water outlet vertical pipe (1), and the drainage connecting pipe (13) is used for connecting an air pump, a liquid nitrogen tank or a hot air pipe;
The hot air pipe generates hot air when the drainage mechanism (5) drains water, so that water in the water outlet vertical pipe (1) is prevented from freezing; the drainage mechanism (5) comprises a main cavity (51), a crank (52), a gear driving mechanism (53) and fan blades (54), and a water suction pipe interface (511) is arranged at the bottom of the main cavity (51); the water suction pipe connector (511) is connected with the vertical water discharge pipe (4);
A water outlet pipe interface (512) is arranged on the side part or the upper part of the main cavity (51), and a supporting structure (513) is arranged on the periphery side of the main cavity (51);
the crank (52) drives the fan blades (54) to rotate through the gear driving mechanism (53), the fan blades (54) form negative pressure on one side of the water suction pipe interface (511), and the fan blades (54) form positive pressure on one side of the water outlet pipe interface (512);
the novel gear driving device further comprises an eccentric wheel (55), a rear end cover (56) and a front support (57), wherein the gear driving mechanism (53) comprises a first driving shaft (533), a main driving large gear (531) and a driven pinion (532);
The eccentric wheel (55) comprises a rear supporting rod (551), a main rotating disc (552) and a front supporting rod (553) which are fixedly connected, and a fan blade passing groove (5521) is formed in the middle of the main rotating disc (552);
The fan blade (54) comprises two blade plates (541) connected in the same direction, and the two blade plates (541) are connected through an elastic structure; the fan blade (54) passes through the fan blade passing groove (5521);
the rear end cover (56) is fixed at the rear part of the main cavity (51), the rear supporting rod (551) is rotatably supported on the rear end cover (56), the front supporting rod (553) is rotatably supported on the front bracket (57), and the front bracket (57) is arranged at the front part of the main cavity (51);
The first driving shaft (533) is arranged at one side of the front support (57), and the main driving large gear (531) is sleeved on the first driving shaft (533); the driven pinion (532) is sleeved on the front supporting rod (553), and the main driving large gear (531) is meshed with the driven pinion (532).
2. A self-draining hydrant structure according to claim 1, characterized in that the middle part of the lateral drain pipe (3) of the water outlet riser (1) is provided with a non-return valve (6).
3. A self-draining hydrant structure according to claim 2, characterized in that the inlet of the lateral drain pipe (3) is provided with a chaff filter screen (7).
4. The self-draining hydrant structure according to claim 1, characterized in that the water outlet switch (2) is an electromagnetic switch, and the electromagnetic switch is controlled by an electromagnetic signal to close the water outlet switch (2) when the drainage mechanism (5) drains water; the water draining mechanism (5) is controlled by an electromagnetic signal, and the water outlet vertical pipe (1) is controlled by the electromagnetic signal; after the fire-fighting water outlet is closed by the water outlet vertical pipe (1), the water outlet switch (2) is closed, and the water draining mechanism (5) starts water draining.
5. A self-draining hydrant structure according to claim 4, characterized in that the bottom of the water outlet riser (1) is provided with a pressure sensor (8), said pressure sensor (8) being arranged in a horizontal flush position with the lateral drain pipe (3).
6. The self-draining hydrant structure according to claim 1, characterized in that said crank (52) is provided on said first driving shaft (533);
the crank (52) drives the first driving shaft (533) to rotate, the first driving shaft (533) drives the main driving large gear (531) to rotate, and the main driving large gear (531) drives the driven small gear (532) to rotate; the driven pinion (532) drives the main turntable (552) to rotate through the front supporting rod (553); the main turntable (552) drives the fan blades (54) to rotate; during rotation of the main turntable (552);
The main turntable (552) generates eccentric rotation relative to the main cavity (51) by taking the first driving shaft (533) as an axis, and the distance between two ends of the two blade plates (541) on two sides and the inner wall of the main cavity (51) is 1-20 mm;
The fan blades (54) and the main rotary disc (552) form negative pressure on one side of the water suction pipe interface (511) and positive pressure on one side of the water outlet pipe interface (512) under the action of the fan blades.
7. A fire well comprising the self-draining hydrant structure of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110257622.2A CN112982573B (en) | 2021-03-09 | 2021-03-09 | Self-draining fire hydrant structure and fire well comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110257622.2A CN112982573B (en) | 2021-03-09 | 2021-03-09 | Self-draining fire hydrant structure and fire well comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112982573A CN112982573A (en) | 2021-06-18 |
| CN112982573B true CN112982573B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110257622.2A Active CN112982573B (en) | 2021-03-09 | 2021-03-09 | Self-draining fire hydrant structure and fire well comprising same |
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| Country | Link |
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| CN (1) | CN112982573B (en) |
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|---|---|---|---|---|
| EP0078792A1 (en) * | 1981-11-04 | 1983-05-11 | Tiroler Röhren- und Metallwerke Aktiengesellschaft | Hydrant stand-pipe |
| CN2769362Y (en) * | 2005-03-02 | 2006-04-05 | 郑传红 | Antifreezing fire hydrant |
| CN103061079A (en) * | 2012-11-06 | 2013-04-24 | 南通芯迎设计服务有限公司 | Washing machine capable of improving cleaning rate |
| CN103807159A (en) * | 2012-11-06 | 2014-05-21 | 贵阳铝镁设计研究院有限公司 | Drainage structure for water pump maintenance |
| CN105971069A (en) * | 2016-07-01 | 2016-09-28 | 种炜东 | Anti-freezing fire hydrant |
| CN107604975A (en) * | 2017-10-31 | 2018-01-19 | 河南工程学院 | Outdoor anti-freezing fire hydrant |
| CN207959360U (en) * | 2018-01-23 | 2018-10-12 | 福建省金扇消防设备有限公司 | A kind of outdoor fire hydrant |
| EP3399112A1 (en) * | 2017-05-02 | 2018-11-07 | Hinni AG | Hydrant with back flow preventer in the upper part |
| CN210482464U (en) * | 2019-07-23 | 2020-05-08 | 京安工程有限公司 | Outdoor fire hydrant with anticollision function |
| CN211285825U (en) * | 2019-11-20 | 2020-08-18 | 沪航科技集团有限公司 | Intelligent outdoor fire hydrant |
| CN211650752U (en) * | 2019-12-21 | 2020-10-09 | 泉州市开顺网络科技有限公司 | Fire water anti-freezing device for fire truck |
| CN112081111A (en) * | 2020-08-22 | 2020-12-15 | 安徽同方工程咨询有限公司 | Underground waterproof engineering supervision system is built in room |
-
2021
- 2021-03-09 CN CN202110257622.2A patent/CN112982573B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0078792A1 (en) * | 1981-11-04 | 1983-05-11 | Tiroler Röhren- und Metallwerke Aktiengesellschaft | Hydrant stand-pipe |
| CN2769362Y (en) * | 2005-03-02 | 2006-04-05 | 郑传红 | Antifreezing fire hydrant |
| CN103061079A (en) * | 2012-11-06 | 2013-04-24 | 南通芯迎设计服务有限公司 | Washing machine capable of improving cleaning rate |
| CN103807159A (en) * | 2012-11-06 | 2014-05-21 | 贵阳铝镁设计研究院有限公司 | Drainage structure for water pump maintenance |
| CN105971069A (en) * | 2016-07-01 | 2016-09-28 | 种炜东 | Anti-freezing fire hydrant |
| EP3399112A1 (en) * | 2017-05-02 | 2018-11-07 | Hinni AG | Hydrant with back flow preventer in the upper part |
| CN107604975A (en) * | 2017-10-31 | 2018-01-19 | 河南工程学院 | Outdoor anti-freezing fire hydrant |
| CN207959360U (en) * | 2018-01-23 | 2018-10-12 | 福建省金扇消防设备有限公司 | A kind of outdoor fire hydrant |
| CN210482464U (en) * | 2019-07-23 | 2020-05-08 | 京安工程有限公司 | Outdoor fire hydrant with anticollision function |
| CN211285825U (en) * | 2019-11-20 | 2020-08-18 | 沪航科技集团有限公司 | Intelligent outdoor fire hydrant |
| CN211650752U (en) * | 2019-12-21 | 2020-10-09 | 泉州市开顺网络科技有限公司 | Fire water anti-freezing device for fire truck |
| CN112081111A (en) * | 2020-08-22 | 2020-12-15 | 安徽同方工程咨询有限公司 | Underground waterproof engineering supervision system is built in room |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112982573A (en) | 2021-06-18 |
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