CN100432445C - Fire Fighting water pump and operating method thereof - Google Patents
Fire Fighting water pump and operating method thereof Download PDFInfo
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- CN100432445C CN100432445C CNB2006100366386A CN200610036638A CN100432445C CN 100432445 C CN100432445 C CN 100432445C CN B2006100366386 A CNB2006100366386 A CN B2006100366386A CN 200610036638 A CN200610036638 A CN 200610036638A CN 100432445 C CN100432445 C CN 100432445C
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Abstract
The present invention relates to a fire service pump and its operation method. Said fire service pump includes pump shell, motor mounted in the pump shell interior and two-stage or more than two-stage series-connected impeller group. On the pump shell between motor and impeller group a water inlet is set, said impeller group is coaxially series-connected and mounted on the impeller shaft, the impeller shaft is fixed on the motor shaft or coaxial with motor shaft. The impeller group includes successively-mounted propeller, impeller and end cover. Said invention also provides the concrete structure of said propeller and impeller, and also provides the working principle of said fire service pump, and its operation method and concrete steps.
Description
Technical field
The present invention relates to the movement technique of a kind of water pump and this water pump, particularly relate to the movement technique of this water pump of submersible pump that a kind of forest fire prevention and control uses.
Background technique
For the mountain topography landforms, the forest zone is with a varied topography, physical features is precipitous and perilous, grass irritates in great numbers, vegetation abundant, in case generation woods fire, fire intensity greatly, fast at top speed, with Pneumatic extinguisher, No. two woods fires of directly putting out a fire to save life and property such as instrument, grenade and backpack Fire water syringe 34, its difficulty is very big, dangerous high, particularly controls crown fire, goes up mountain fire duration and degree of heating, high strength live wire, above conventional fire suppression instrument is powerless especially, can only hope fire heave a sigh.
Water can restrain fire, and is the most general, the most cheap, the most effective natural extinguishing agent, is the forest fires saving method of current a lot of forestry developed country first-selection with the water fire extinguishing.More existing economic conditions place have preferably taken the lead in using water pump, waterwheel, 34 fire extinguishings of backpack hydraulic giant.But the water source of water fire extinguishing is subjected to the restriction that high slope, mountain, the scene of a fire is steep and distance is far away.The restriction that backpack hydraulic giant 34 is put out a fire and loaded heavily and do not have follow-up water source supply on the scene of a fire generally only is used to mop up, and can't be used for effectively controlling live wire, particularly high-intensity live wire.Waterwheel cost height is limited by landform, and is to some vehicles place that is beyond one's reach, inapplicable.
Existing fire service pump carries out work with the driven by motor belt pulley usually, and lift is little, in order to realize the lift of certain altitude, normally places a water pump at certain altitude, by multistage water pump polyphone, step by step water is extracted into the height that needs." multistage refute connect, unlimited water delivery " application model of current this water pump fire extinguishing on the one hand, because of the pressure imbalance that draws water between pump and the pump, often occurs finding time water band 33 and the phenomenon that crashes, generally can't water delivery to live wire, can not effectively bring into play effect with the water fire extinguishing; On the other hand, increase cost and transportation difficulty, particularly owing to need to install the different places of a plurality of water pumps at different heights, installation time is long, to the occasion of some landform more complicated, also possibly can't install, because the prolongation of installation time, postponing of flame extinction time increases the fire extinguishing difficulty greatly.
Woods fire occurs in the forest mountain region, and high slope, mountain is steep, and road is obstructed, water source difficulty, and woods fire does not need big flow with the water fire extinguishing, but needs remote high-lift water delivery.Therefore, the forest fire prevention and control water pump should adopt than low discharge, more high-lift, than the equipment of light weight, smaller size smaller so that carry and in the mountain region operation, and the urban fire protection pump equipment that directly application traffic is bigger than normal, lift is on the low side, size and weight are not easy to go up a hill.
Existing this fire service pump, the one, not enough with water fire extinguishing understanding to forest, not walking to get out of the wood on concept also needs big flow, high hydraulic pressure and long-range mistaken ideas with the water fire extinguishing; The 2nd, not enough to forest with the application theory and the model study of water fire extinguishing, the characteristics that woods fire spreads have determined the dynamic of live wire, thereby form that scene of a fire area constantly enlarges, live wire constantly extends, to this, lack targetedly and effectively implement the application model of " divide forces surround, multiple penetration "; The 3rd, water is not to be available anywhere, under the specified conditions of forest zone, to use and put out a fire with water, must at first solve the water source and obtain, carry and ensure, and present water pump can not satisfy forest extinguishing need high-lift, remote water delivery and high pressure resistant, lay fast, divide water needs such as handline 33 flexibly.
Also has a kind of submersible pump that is used for heavy duty service now, as the patent No. 01271640.5, submersible pump comprises casing, is installed in the multi-stage impeller in motor, sleeve and the sleeve in the casing, an end cap is established in the motor upper end, a bearing support is established in the lower end, impeller serial is on impeller shaft, and impeller shaft is connected with motor shaft through coupling, is provided with water intake etc. on the casing between motor and the impeller.The submersible pump of this structure, with respect to the submersible pump that carries out work with the driven by motor belt pulley, volume is little, pressure is big, the lift height, simple advantage is installed.But existing this submersible pump, owing to just utilize the centrifugal force of multi-stage impeller to come supercharging, supercharging is limited, lift can't satisfy the needs of fire-fighting, therefore generally is used for heavy duty service, also is not used as fire service pump.The movement technique of existing this water pump, has only wheel rotation, and there is not propulsion device, thereby this movement technique of existing this submersible pump can not form the propulsion mode that spiral isolates and further increases hydraulic pressure, thereby lift and water delivery distance also is difficult to satisfy the needs of fire-fighting, thereby existing submersible pump also is not applied in the fire-fighting, particularly on the forest fire prevention and control.
Summary of the invention
First purpose of the present invention is to provide a kind of and improves lift to satisfy the fire service pump of fire-fighting needs by the pressure that increases between the submersible pump impeller group.
Second purpose of the present invention is to provide the movement technique of a kind of distance, lift height, withstand voltage strong fire service pump.
Realize a kind of fire service pump of the present invention, comprise pump case, be installed in the motor in the pump case and be installed in secondary in the cylindrical cavity or the above impeller sets of connecting of secondary in the pump case, on the pump case between motor and the impeller sets, be provided with water intake, impeller sets is coaxial to be installed in series on impeller shaft or coaxial with motor shaft, impeller shaft is fixed on the motor shaft, impeller sets comprises propulsion device, impeller, end cap, back-up ring, is provided with first through hole at the center of end cap; Propulsion device comprises central shaft, first blade more than three or three, first wheel and second wheel hub, first blade places between the first wheel and second wheel hub, form first guiding gutter more than three or three between first wheel, first blade, second wheel hub, be provided with second through hole that cooperates with impeller shaft in central shaft, propulsion device is fixed on the impeller shaft by second through hole; Impeller comprises second blade, third round hub and the four-wheel hub identical with the first blade number, the position of second blade is corresponding with the position of first blade, second blade places between third round hub and the four-wheel hub, form second guiding gutter identical between third round hub, second blade, the four-wheel hub, be provided with the third through-hole that cooperates with angle of rake central shaft at the center of impeller with the first guiding gutter number; The third round hub of impeller is supported on angle of rake second wheel hub, and angle of rake central shaft is articulated in the third through-hole of impeller, and back-up ring is installed on impeller and the angle of rake outer border, and end cap is installed on the impeller; Form the flow channel of periphery sealing between second guiding gutter of the through hole of end cap, angle of rake first guiding gutter, impeller and back-up ring; End cap and propulsion device between two adjacent impeller sets are installed together, and form the flow channel of periphery sealing between the impeller sets.The technical program and the existing structure that is not both impeller sets that is used for the submersible pump maximum of heavy duty service.When drawing water, impeller shaft is along with motor shaft rotates together, impeller shaft drives the propulsion device that is fixed on the impeller shaft and rotates, impeller shaft drives the propulsion device that is fixed on the impeller shaft and rotates, the impeller of impeller sets, back-up ring, end cap is irregular rotation under angle of rake effect, thereby the propulsion mode of formation spiral isolation, increased hydraulic pressure, made the water supply distance, the lift height, and volume is little, do not need again certain altitude that a fire service pump is installed, only need to move water pipe to need position and get final product, install fast, convenient, not limited by landform, applied widely, can satisfy the needs of fire-fighting.
As improvement, the direction that deviates from first wheel along the outer periphery of angle of rake first wheel small end is provided with first positioning ring, and first positioning ring is installed in first through hole of end cap and with first through hole and cooperates, and makes easy to assembly.
As improvement, big end along the outer periphery of the four-wheel hub of impeller is provided with second positioning ring towards the direction of four-wheel hub small end, be provided with first step portion on second positioning ring, the inner periphery of back-up ring cooperates with the outer periphery of first step portion, is convenient to assembling and sealing flow channel.
As improvement, on end cap, be provided with the 3rd stepped part and the 4th stepped part, the outer periphery of the 3rd stepped part cooperates with the inner periphery of back-up ring, and the outer periphery of the 4th stepped part cooperates with the inner periphery of second positioning ring, is convenient to assembling and sealing flow channel.
As improvement, the maximum outside diameter of end cap, back-up ring, second positioning ring equates, is convenient to be seated in the pump case.
As improvement, the progression of described impeller sets is 30 grades to 74 grades, propulsion device first blade number be 3 to 12, make single pump water delivery distance/lift can reach 2500m/100m～1500m/200m.
The angle of rake first wheel and second wheel hub are opening umbrella in the same way, and first wheel is parallel with second wheel hub.The third round hub of impeller and four-wheel hub are opening umbrella in the same way, and third round hub four-wheel hub is parallel, and this shape helps increasing hydraulic pressure.Between the third through-hole of impeller and angle of rake central shaft, rubber washer is installed, can reduces friction and collision mutually between angle of rake central shaft and the impeller, make fire service pump durable.
As improvement, the maximum of first wheel is greater than the maximum outside diameter of second wheel hub, and the maximum outside diameter of four-wheel hub is greater than the maximum outside diameter of third round hub, and the maximum outside diameter of second wheel hub and third round hub is basic identical, it is smooth and easy to be convenient to current, thereby increases the water delivery distance of fire service pump and increased lift; The Hand of spiral of first blade is opposite with the Hand of spiral of second blade.
As further improvement, pump case is cylindrical, is convenient to make; Propulsion device, impeller, end cap, back-up ring are stainless steel material, pump case is cylindrical, wear resistance and sealing have been increased, not high to water quality requirement, because stainless steel material is when high speed rotating, can be not the same with plastic material, can produce bigger distortion, but thereby thereby pump housing traverse, tiltedly put, place vertically and adapt to various water quality.
A kind of movement technique of fire service pump, fire service pump comprises pump case, be installed in motor and secondary or the above impeller sets of connecting of secondary in the pump case, on the pump case between motor and the impeller sets, be provided with water intake, impeller sets is coaxial to be installed in series on impeller shaft, impeller shaft is fixed on the motor shaft or is coaxial with motor shaft, impeller sets comprises the propulsion device of installing successively, impeller, end cap, border at propulsion device and impeller is provided with back-up ring, on propulsion device, be provided with first blade, on impeller, be provided with second blade identical with the first blade number and that the position is corresponding, propulsion device is fixed on the impeller shaft, and impeller is articulated on the impeller shaft, and end cap passes impeller shaft; Movement process when drawing water comprises that impeller shaft is along with motor shaft rotates together, impeller shaft drives the propulsion device that is fixed on the impeller shaft and rotates, impeller shaft drives the propulsion device that is fixed on the impeller shaft and rotates the irregular rotation under angle of rake effect of the impeller of impeller sets, back-up ring, end cap.This movement technique of fire service pump forms the propulsion mode that spiral is isolated, and has increased hydraulic pressure, makes the water supply distance, and the lift height can satisfy the needs of fire-fighting.
The invention has the beneficial effects as follows owing to adopted the submersible pump structure of similar heavy duty service, and increased propulsion device, thereby form the propulsion mode that spiral is isolated, increased propelling hydraulic pressure, make the water supply distance, the lift height draws water easily; Single pump water delivery distance/lift can reach 2500m/50m～1000m/200m, and the per hour effective water delivery flow/lift of water pump can reach 6.0m/50m～3.0m/2000m; And volume is little, installation is quick, convenience, is not subjected to landform restriction, applied widely; Propulsion device, impeller adopt stainless steel material, have increased wear resistance and sealing, and be not high to water quality requirement, because stainless steel material is when high speed rotating, can be not the same with plastic material, can produce bigger distortion, but thereby pump housing traverse, tiltedly put, place vertically and adapt to various water quality.
Description of drawings
Fig. 1 is the schematic representation that submersible pump of the present invention is connected with its external equipment.
Fig. 2 cuts out the schematic representation that part impeller sets structure is dissectd along the central position for submersible pump of the present invention.
Fig. 3 is the perspective exploded view of impeller sets Rotate 180 of the present invention °.
Embodiment
As shown in Figure 1 to Figure 3, a kind of fire service pump 29, comprise columniform stainless steel metal pump case 1, be installed in the motor (not shown) in the pump case 1 and the impeller sets 30 of 52 grades of series connection, on the pump case 1 between motor and the impeller sets 30, be provided with water intake 31, impeller sets 30 coaxial being installed in series on impeller shaft 2, impeller shaft 2 is the metal shaft of outer-hexagonal type, impeller shaft 2 be fixed on the motor shaft (not shown) by coupling and with the coaxial interlock of motor shaft.
Be provided with at the center of end cap 3 in first through hole 22 that first through hole, 22, the first positioning rings 13 are installed in end cap 3 and and cooperate with first through hole 22; The outer periphery that is provided with the 3rd stepped part 23 and the 4th stepped part 24, the three stepped part 23 on end cap 3 cooperates with the inner periphery of back-up ring 6, and the outer periphery of the 4th stepped part 24 cooperates with the inner periphery of second positioning ring 20.
The maximum outside diameter of end cap 3, back-up ring 6, second positioning ring 20 equates that second wheel hub 10 is basic identical with the maximum outside diameter of third round hub 15; The Hand of spiral of first blade 8 is opposite with the Hand of spiral of second blade 14.
The motor of submersible pump is connected with generator 32, and the end that submersible pump is installed impeller sets 30 is connected with water band 33, water band 33 with establish hydraulic giant 34 and be connected.The number of first blade is 3, and submersible pump adopts 52 grades of impeller sets, adopts the long fire-extinguisher water hose of 1.5 cun 1200m to make conduit pipe, and 3 on water band, spray gun port diameter are 15mm, and the spray gun port number is one.Measured by global positioning system, the lift of dried up position, last water outlet position is 200 meters, and water-outlet quantity is 3.2 cubic metres/hour, and the water-jet journey of ejection can satisfy the needs of fire-fighting at 10 meters.
The movement process of fire service pump 29 comprises:
Motor shaft rotates under the drive of motor, impeller shaft 2 is along with motor shaft rotates together, the propulsion device 4 that impeller shaft 2 is fixed on the impeller shaft 2 rotates, irregular rotation under the effect of the impeller 5 of impeller sets 30, back-up ring 6, end cap 3 propulsion devices 4, thereby the propulsion mode of formation spiral isolation, increased hydraulic pressure, make the water supply distance, the lift height, and volume is little, do not need certain altitude that a fire service pump 29 is installed again, and only needs to move water pipe to need position and gets final product, install fast, conveniently, not limited by landform, applied widely, can satisfy the needs of fire-fighting.
After having scouted landform, long-range water pump operating method comprises:
(1) placement devices: connect generator 32 and pump power line, the pump outlet water band 33 of plugging into is put into water body with water pump; (2) start: key starter-generator 32, the out-put supply switch that closes connects controller, and operation control starts water pump, and the synchronous output water that draws water is put out the fire; (3) shutdown: the operation control termination of pumping, close down the out-put supply switch and disconnect controller, key is turned off generator 32; (4) recovery plant: open the sluicing reduction valve and discharge water with pressure, remove water pump water outlet saliva band 33, order is taken out water body with water pump, and it is own with the pump power line to remove generator 32, recycle-water band 33.
Long-range water pump operation notice: (1) checks whether power line is damaged, with anticreep; (2) should explore the way earlier before the hose laying 33 and open and repair the lay passage, to reach smooth shop band; (3) strict follow procedure is started shooting, is shut down, otherwise can influence the life-span of this equipment; (4) must open the pumping hole drain valve before the recycle-water band 33, treat that water in the water band 33 racks up after, could disconnect.
Embodiment 2
As different from Example 1, the number of first blade is 6, and submersible pump adopts 52 grades of impeller sets, adopts the long fire-extinguisher water hose of 1.5 cun 1200m to make conduit pipe, and 3 on water band, spray gun port diameter are 15mm, and the spray gun port number is one.Measured by global positioning system, the lift of dried up position, last water outlet position is 170 meters, and water-outlet quantity is 3.2 cubic metres/hour, and the water-jet journey of ejection can satisfy the needs of fire-fighting at 7.5 meters.
Embodiment 3
As different from Example 2, the number of first blade is 5, adopts the long fire-extinguisher water hose of 1.5 cun 1200m to make conduit pipe, and 1 on water band, spray gun port diameter are 5mm, and the spray gun port number is one.Measured by global positioning system, the lift of dried up position, last water outlet position is 200 meters, and water-outlet quantity is 3.0 cubic metres/hour, and the water-jet journey of ejection can satisfy the needs of fire-fighting at 10 meters.
As different from Example 2, the number of first blade is 7, adopts the long fire-extinguisher water hose 33 of 1.0 cun 140m to make conduit pipe, and 3 on water band, spray gun port diameter are 3mm, and the spray gun port number is 2.Measured by global positioning system, the lift of dried up position, last water outlet position is 200 meters, and water-outlet quantity is 3.0 cubic metres/hour, and the water-jet journey of ejection can satisfy the needs of fire-fighting at 10 meters.
As different from Example 2, the number of first blade is 9, and submersible pump adopts 30 grades of impeller sets, adopts the long fire-extinguisher water hose of 1.5 cun 1200m to make conduit pipe, and 1 on water band, spray gun port diameter are 15mm, and the spray gun port number is one.Measured by global positioning system, the lift of dried up position, last water outlet position is 50 meters, and water-outlet quantity is 2.2 cubic metres/hour, and the water-jet journey of ejection can satisfy the needs of fire-fighting at 4.0 meters.
Embodiment 6
As different from Example 2, impeller sets 30 comprises the end cap 3 of plastics, the propulsion device 4 of plastics, the impeller 5 of plastics, the back-up ring 6 of plastics.The number of first blade is 12, and submersible pump adopts 75 grades of impeller sets, adopts the long fire-extinguisher water hose of 1.0 cun 1250m to make conduit pipe, and 2 on water band, spray gun port diameter are 15mm, and the spray gun port number is one.Measured by global positioning system, the lift of dried up position, last water outlet position is 50 meters, and water-outlet quantity is 2.2 cubic metres/hour, and the water-jet journey of ejection can satisfy the needs of fire-fighting at 4.0 meters.
Claims (10)
1, a kind of fire service pump, comprise pump case, be installed in the motor in the pump case and be installed in secondary in the cylindrical cavity or the above impeller sets of connecting of secondary in the pump case, on the pump case between motor and the impeller sets, be provided with water intake, impeller sets is coaxial to be installed in series on impeller shaft, impeller shaft is fixed on the motor shaft or is coaxial with motor shaft, it is characterized in that: impeller sets comprises end cap, propulsion device, impeller, back-up ring, is provided with first through hole at the center of end cap; Propulsion device comprises central shaft, first blade more than three or three, first wheel and second wheel hub, first blade places between the first wheel and second wheel hub, form first guiding gutter more than three or three between first wheel, first blade, second wheel hub, be provided with second through hole that cooperates with impeller shaft in central shaft, propulsion device is fixed on the impeller shaft by second through hole; Impeller comprises second blade, third round hub and the four-wheel hub identical with the first blade number, the position of second blade is corresponding with the position of first blade, second blade places between third round hub and the four-wheel hub, form second guiding gutter identical between third round hub, second blade, the four-wheel hub, be provided with the third through-hole that cooperates with angle of rake central shaft at the center of impeller with the first guiding gutter number; The third round hub of impeller is supported on angle of rake second wheel hub, and angle of rake central shaft is articulated in the third through-hole of impeller, and back-up ring is installed on impeller and the angle of rake outer border, and end cap is installed on the impeller; Form the flow channel of periphery sealing between second guiding gutter of the through hole of end cap, angle of rake first guiding gutter, impeller and back-up ring; End cap and propulsion device between two adjacent impeller sets are installed together, and form the flow channel of periphery sealing between the impeller sets.
2, a kind of fire service pump as claimed in claim 1 is characterized in that: the direction that deviates from first wheel along the outer periphery of angle of rake first wheel small end is provided with first positioning ring, and first positioning ring is installed in first through hole of end cap and with first through hole and cooperates.
3, a kind of fire service pump as claimed in claim 2, it is characterized in that: the big end along the outer periphery of the four-wheel hub of impeller is provided with second positioning ring towards the direction of four-wheel hub small end, be provided with first step portion on second positioning ring, the inner periphery of back-up ring cooperates with the outer periphery of first step portion.
4, a kind of fire service pump as claimed in claim 3, it is characterized in that: on end cap, be provided with the 3rd stepped part and the 4th stepped part, the outer periphery of the 3rd stepped part cooperates with the inner periphery of back-up ring, and the outer periphery of the 4th stepped part cooperates with the inner periphery of second positioning ring.
5, a kind of fire service pump as claimed in claim 4 is characterized in that: the maximum outside diameter of end cap, back-up ring, second positioning ring equates.
6, a kind of fire service pump as claimed in claim 5 is characterized in that: the progression of described impeller sets is 30 grades to 74 grades, and the number of described propulsion device first blade is 3 to 12.
7, a kind of fire service pump as claimed in claim 6 is characterized in that: the angle of rake first wheel and second wheel hub are opening umbrella in the same way, and first wheel is parallel with second wheel hub; The third round hub of impeller and four-wheel hub are opening umbrella in the same way, and the third round hub is parallel with the four-wheel hub; Between the third through-hole of impeller and angle of rake central shaft, rubber washer is installed.
8, a kind of fire service pump as claimed in claim 7, it is characterized in that: the maximum outside diameter of first wheel is greater than the maximum outside diameter of second wheel hub, the maximum outside diameter of four-wheel hub is greater than the maximum outside diameter of third round hub, and the maximum outside diameter of second wheel hub and third round hub is basic identical; The Hand of spiral of first blade is opposite with the Hand of spiral of second blade.
9, as the described a kind of fire service pump of the arbitrary claim of claim 1 to 8, it is characterized in that: described pump case is cylindrical, and described end cap, propulsion device, impeller, back-up ring are stainless steel material.
10, a kind of movement technique of fire service pump, fire service pump comprises pump case, be installed in the motor in the pump case and be installed in secondary in the cylindrical cavity of pump case or the impeller sets of the above series connection of secondary, on the pump case between motor and the impeller sets, be provided with water intake, impeller sets is coaxial to be installed in series on impeller shaft, impeller shaft is fixed on the motor shaft or is coaxial with motor shaft, it is characterized in that: described impeller sets comprises the propulsion device of installing successively, impeller, end cap, border at propulsion device and impeller is provided with back-up ring, on propulsion device, be provided with first blade, on impeller, be provided with second blade identical with the first blade number and that the position is corresponding, propulsion device is fixed on the impeller shaft, impeller is articulated on the impeller shaft, and end cap passes impeller shaft; Movement process when drawing water comprises impeller shaft along with motor shaft rotates together, and impeller shaft drives the propulsion device that is fixed on the impeller shaft and rotates the irregular rotation under angle of rake effect of the impeller of impeller sets, back-up ring, end cap.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100366386A CN100432445C (en) | 2006-07-21 | 2006-07-21 | Fire Fighting water pump and operating method thereof |
| US12/374,313 US20090246022A1 (en) | 2006-07-21 | 2007-03-14 | Fire fighting pump and its operating methods |
| PCT/CN2007/000811 WO2008011769A1 (en) | 2006-07-21 | 2007-03-14 | Fire fighting pump and operation thereof and fire fighting system and fire engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100366386A CN100432445C (en) | 2006-07-21 | 2006-07-21 | Fire Fighting water pump and operating method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101021216A CN101021216A (en) | 2007-08-22 |
| CN100432445C true CN100432445C (en) | 2008-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100366386A Expired - Fee Related CN100432445C (en) | 2006-07-21 | 2006-07-21 | Fire Fighting water pump and operating method thereof |
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| CN (1) | CN100432445C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893449A (en) * | 2017-11-07 | 2018-04-10 | 肇庆高新区虎鲨电子技术有限公司 | Water delivery device |
| IT201900000637A1 (en) * | 2019-01-15 | 2020-07-15 | Nuovo Pignone Tecnologie Srl | A PUMP WITH A CUSHION LUBRICATION SYSTEM |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3788764A (en) * | 1972-11-06 | 1974-01-29 | Borg Warner | Multi-stage centrifugal pump with means for pulse cancellation |
| US4511307A (en) * | 1983-09-02 | 1985-04-16 | Dresser Industries, Inc. | Centrifugal pump |
| JPH10205491A (en) * | 1997-01-22 | 1998-08-04 | Hitachi Ltd | Three-stage moving blade variable pitch type axial flow fan |
| US5885058A (en) * | 1995-12-28 | 1999-03-23 | Institute Francais Du Petrole | Multiphase fluid pumping or compression device with blades of tandem design |
| CN2580155Y (en) * | 2002-10-15 | 2003-10-15 | 叶丽玲 | Submersible pump impeller group |
| US6676366B2 (en) * | 2002-03-05 | 2004-01-13 | Baker Hughes Incorporated | Submersible pump impeller design for lifting gaseous fluid |
| CN1786479A (en) * | 2005-12-13 | 2006-06-14 | 江苏大学 | Centrifugal pump for deep well |
-
2006
- 2006-07-21 CN CNB2006100366386A patent/CN100432445C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3788764A (en) * | 1972-11-06 | 1974-01-29 | Borg Warner | Multi-stage centrifugal pump with means for pulse cancellation |
| US4511307A (en) * | 1983-09-02 | 1985-04-16 | Dresser Industries, Inc. | Centrifugal pump |
| US5885058A (en) * | 1995-12-28 | 1999-03-23 | Institute Francais Du Petrole | Multiphase fluid pumping or compression device with blades of tandem design |
| JPH10205491A (en) * | 1997-01-22 | 1998-08-04 | Hitachi Ltd | Three-stage moving blade variable pitch type axial flow fan |
| US6676366B2 (en) * | 2002-03-05 | 2004-01-13 | Baker Hughes Incorporated | Submersible pump impeller design for lifting gaseous fluid |
| CN2580155Y (en) * | 2002-10-15 | 2003-10-15 | 叶丽玲 | Submersible pump impeller group |
| CN1786479A (en) * | 2005-12-13 | 2006-06-14 | 江苏大学 | Centrifugal pump for deep well |
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| Publication number | Publication date |
|---|---|
| CN101021216A (en) | 2007-08-22 |
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Assignee: Xiehong Forest Fire-Fighting Equipment Co., Ltd., Guangzhou Assignor: Huadongnanfang Forestry Fire Fighting Tools Factory, Huadu District, Guangzhou Contract record no.: 2011440000765 Denomination of invention: Fire Fighting water pump and operating method thereof Granted publication date: 20081112 License type: Exclusive License Open date: 20070822 Record date: 20110727 |
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