CN101216045A - Fire-fighting truck water pump capable of automatically unloading - Google Patents
Fire-fighting truck water pump capable of automatically unloading Download PDFInfo
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- CN101216045A CN101216045A CNA2008100194266A CN200810019426A CN101216045A CN 101216045 A CN101216045 A CN 101216045A CN A2008100194266 A CNA2008100194266 A CN A2008100194266A CN 200810019426 A CN200810019426 A CN 200810019426A CN 101216045 A CN101216045 A CN 101216045A
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- automatic pressure
- fighting truck
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Abstract
The invention provides a water pump used for a fire engine, which can relieve the pressure, and belongs to the technical field of a fire fighting device. The invention comprises a pump body with an inlet opening and an outlet opening, and a transmission case coupled with the pump body in a transmission way. The power input shaft of the transmission case is coupled with the power output shaft of the fire engine in a transmission way. The invention is characterized in that: an automatic pressure relieving device is arranged between the inlet opening and the outlet opening, and is used to form a water loop arranged between the inlet opening and the outlet opening. The invention has the advantages that: as the automatic pressure relieving device is arranged between the inlet opening and the outlet opening of the pump body, when a valve connected with the outlet pipe of outlet opening is closed suddenly during use, water pumped from the pump body is diverted to the inlet pipe of the inlet opening from the outlet pipe to form a water loop, thus pressure is relieved automatically. Accordingly, the systemic pressure of the pump does not rise suddenly, and the invention plays an effective role in protecting the pump body and sealing elements and preventing the pipes from bursting.
Description
Technical field
The invention belongs to the fire fighting device technical field, be specifically related to a kind of fire-fighting truck water pump of energy automatic pressure-relieving.
Background technique
The fire-fighting truck water pump of known lift-launch on fire-fighting truck is by shown in Figure 1, comprise the pump housing 1 with entery and delivery port 11,12, connect with the pump housing 1 transmission and be installed on gearbox 2 on the support 22, the power input shaft 21 of gearbox 2 connects by the pto transmission of universal joint 211 with fire-fighting truck.The maximum puzzlement of the fire-fighting truck water pump of said structure is: the pipeline explosion frequently that the pump housing 1 damages easily, Sealing often lost efficacy, connect mutually with entery and delivery port 11,12, thereby influence even delay valuable fire fighting opportunity.Through claimant's long-term observation and in-depth analysis, think: the reason that causes above-mentioned fault is because when the pump housing 1 proper functioning and advance, water outlet 11,12 normally advance, during water outlet, because of the fireman adjusts the fire extinguishing position possibly, need close fire-fighting chamber or fire-fighting monitor, when appearance is unusual in the perhaps fire-fighting process, need stop water outlet, close due to the outlet valve on the pipeline that connects mutually with water outlet 12 suddenly, because after closing outlet valve, because the operating rate of the pump housing 1 does not reduce, yet flow is vanishing suddenly but, the system pressure of the whole pump housing 1 and being linked in into, water outlet 11, the pressure of the pipeline on 12 just raises rapidly, when having surpassed when bearing ultimate strength, must cause pipeline and damage, faults such as the seal fails of joint.Present solution has two kinds, and the one, corresponding part is changed in frequent inspection during the utmost point; The 2nd, select with the more excellent object of withstand voltage properties such as Sealing, pipeline or the like.But the claimant thinks that above-mentioned measure all belongs to the passive counter measure of taking stopgap measures and not effecting a permanent cure, and therefore is necessary to be improved.
Summary of the invention
Task of the present invention is that a kind of fire-fighting truck water pump of pump housing Sealing, pipeline being implemented the energy automatic pressure-relieving of protection that in use still can fully play when closing outlet valve suddenly will be provided.
Task of the present invention is finished like this, a kind of fire-fighting truck water pump of energy automatic pressure-relieving, the gearbox that it comprises the pump housing with entery and delivery port, connects with pump housing transmission, the pto transmission of the power input shaft of gearbox and fire-fighting truck connects, and is characterised in that: be provided with an automatic pressure-relieving device that forms water loop between being used for entery and delivery port between the described entery and delivery port.
Automatic pressure-relieving device of the present invention comprises Decompression valves, first, second water service pipe, and an end of first water service pipe is connected with the outlet pipe on described water outlet of continuing and communicates, and an end of the other end of first water service pipe and Decompression valves connects; One end of second water service pipe is connected with the other end of Decompression valves, and the other end of second water service pipe is connected with the intake pipe on described water intake of continuing and communicates.
Decompression valves of the present invention comprises valve pocket, valve seat, valve rod, spring, valve, one end of valve pocket is connected with first water service pipe, the other end is connected with an end of valve seat, the other end of valve seat is connected with second water service pipe, have first liquid outlet on the valve seat, first liquid outlet communicates with the valve pocket of valve pocket, valve rod is located in the valve pocket of valve pocket, spring is nested with on valve rod, and be bearing on the valve, and valve is fixed on the end of valve rod, and is corresponding with the valve port of valve pocket, offers second liquid outlet that communicates with valve pocket on the valve.
Decompression valves of the present invention also includes first and connects nut, and this first connects nut and match with valve pocket, and described first water service pipe connects nut by first and is connected with valve pocket and communicates with described valve port.
Decompression valves of the present invention also includes second and connects nut, and this second connects nut and match with described valve seat, and described second water service pipe connects by second that nut is connected with valve seat and communicates with the valve seat mouth of valve seat.
Valve of the present invention be provided be used for and valve port between form the sealing gasket of sealing.
Valve of the present invention is the end that is fixed on valve rod in the mode that is threaded.
The material of sealing gasket of the present invention is rubber or nylon.
The material of sealing gasket of the present invention is a rubber.
The present invention is owing to be provided with the automatic pressure-relieving device between the entery and delivery port of the pump housing; therefore during the valve in use closing the pipeline of receiving at the outlet pipe of water outlet suddenly; then the water that pumped into by the pump housing can be caused to receive at the intake pipe of water intake and use from outlet pipe and form water loop; realize positive release; thereby can not cause the system pressure of the pump housing to raise suddenly, the effect of having played the protection pump housing and Sealing effectively and having prevented pipelines from bursting.
Description of drawings
Fig. 1 is the structural drawing of the fire-fighting truck water pump of prior art.
Fig. 2 is the structural drawing of the fire-fighting truck water pump of the present invention's energy automatic pressure-relieving.
Fig. 3 is an example structure figure of automatic pressure-relieving device of the present invention.
Embodiment
See also Fig. 1, the pump housing 1 connects with gearbox 2 transmissions, and by the pto drive pump housing 1 work of gearbox 2, gearbox 2 is fixed on the support 22, support 22 is fixed on the fire-fighting truck, and the power input shaft 21 of gearbox 2 connects by the pto transmission of universal joint 211 with fire-fighting truck.According to common practise, the pump housing 1 has certainly existed water intake 11 and water outlet 12, connects intake pipe 111 on the water intake 11, and connects outlet pipe 121 on the water outlet 12.Shown in figure, inlet tube and outlet tube 111,121 all is to realize with the form that flange connects with being connected of entery and delivery port 11,12, and is equipped with sealing gasket.When driving the pump housings 1 work by gearbox 2, just fire-fighting water is introduced water intake 11 and then draw, and cause the fire extinguishing spray gun through outlet pipe 121 from water outlet 12 by intake pipe 111.When valve on the pipeline of in use closing outlet pipe 121 suddenly such as the switch on the spray gun, because the pump housing is in working state as usual, yet the flow of water vanishing suddenly, therefore the system pressure of the pump housing 1 just raises rapidly, if there are not feasible protective measures, then can cause the sealing gasket between inlet tube and outlet tube 111,121 and the entery and delivery port 11,12 to cause damage inevitably, produce and reveal, and can cause the situation that undermines the pump housing 1, explosion outlet pipe 121 and so on.The present invention recommends that an automatic pressure-relieving device 3 is arranged in view of this, is connected between the inlet tube and outlet tube 111,121, communicates with inlet tube and outlet tube 111,121.So it is in running order following at the pump housing 1, even if the valve of cutting out suddenly on the pipeline of outlet pipe 121 is an outlet valve, so because the water that promptly comes from intake pipe 111 that the pump housing 1 pumps into can be guided to intake pipe 111 3 times through the automatic pressure-relieving device from outlet pipe 121, form circulation loop, therefore the system pressure of the pump housing 1 can not raise, thereby just can not cause aforesaid various fault.
Automatic pressure-relieving device 3 comprises Decompression valves 31 and first, second water service pipe 32,33, what first, second water service pipe 32,33 was taken in fact is the effect of pipe coupling, more particularly, first water service pipe 32 plays the transitional function between Decompression valves 31 and the outlet pipe 121, and second water service pipe 33 plays the transitional function between Decompression valves 31 and the intake pipe 111.
See also Fig. 2, the claimant has provided preferably but a kind of concrete structure of the Decompression valves 31 that is not limited to, it mainly comprises valve pocket 311, valve seat 312, valve rod 313, spring 314, valve 315, one end of valve pocket 311 is promptly towards narrow the contracting of an end of first water service pipe 32, further say, valve port 3111 narrow the contracting of valve pocket 311, be used for docking with first water service pipe 32, the inwall of the other end of valve pocket 311 is processed with internal thread, the outside thread that is used for and processes on the outer wall of valve seat 312 1 ends connects, contract and the other end of valve seat 312 is narrow, more particularly, valve seat mouth 3122 narrow the contracting of valve seat 312 are used for docking with second water service pipe 33, first liquid outlet 3121 on the valve seat 312 respectively with the valve pocket 3112 of valve pocket 311, valve seat mouth 3122 communicates, and valve seat mouth 3122 communicates with the tube chamber of second water service pipe 33.Valve rod 313 is arranged in the valve pocket 3112 of valve pocket 311, and spring 314 is nested with on valve rod 313, and is bearing on the valve 315, and valve 315 adopts screw thread to connect with valve rod 313, and corresponding at aforesaid valve port 3111 places.At ordinary times, under the active force of spring 314, valve 315 is closed valve port 3111, make the passageway shuts off of valve port 3111 and valve pocket 3112, and when first the pressure of liquid (water) in can water pipe 32 has surpassed the active force of spring 314, just valve 315 is backed down, spring 314 compression makes valve port 3111 communicate with second liquid outlet 3151 on the valve 315, and vice versa.In order to make 315 pairs of valve ports 3111 of valve have good closing function, therefore on valve 315, be installed with the sealing gasket 3152 that material is preferably rubber.
The automatic pressure-relieving device 3 that the present invention recommended comprises that also first, second connects nut 316,317, connects nut 316 by first valve pocket 311 is reliably docked with first water service pipe 32, connects nut 317 by second valve seat 312 is reliably docked with second water service pipe 33.At valve pocket 311 the narrow end that contracts is that the outer wall of the upper end of location status shown in Figure 2 is processed with and connects thread, confession and first connects nut 316 and connects, and be that the lower end outer wall of location status shown in Figure 2 is processed with equally and connects thread at valve seat 312 the narrow end that contracts, for and second connect nut 317 and connect.As from the foregoing, first water service pipe 32 connects nut 316 by means of first and finishes with valve pocket 311 and be connected, and finishes with valve seat 312 and is connected and second water service pipe 33 connects nut 317 by means of second.
The claimant narrates working principle of the present invention in conjunction with Fig. 1, Fig. 2, when the present invention is come into operation, by the pto of fire-fighting truck or claim transmission shaft to drive the power input shaft 21 of the gearbox 2 that connects mutually by universal joint 211 and pto, drive the pump housing 1 that connects with its transmission by the pto of gearbox 2 and work.Current are introduced from intake pipe 111, water intake 11 successively, draw from water outlet 12, outlet pipe 121.When on the pipeline of in use closing outlet pipe 121 suddenly during valve, no longer water outlet of outlet pipe 121, it is water flow vanishing suddenly, and because the pump housing 1 of this moment still is in normal working, therefore the system pressure of the pump housing 1 raises suddenly, at this moment, current just enter first water service pipe 32, the valve 315 (overcoming the active force of spring 314) of the Decompression valves 31 of automatic pressure-relieving device 3 is opened on the top, enter the valve pocket 3112 of valve pocket 311 from second liquid outlet 3151, and then from first liquid outlet, 3121 introducings, second water service pipe 33, until entering water pipe 111, form depressurized circuit, make the system pressure of the pump housing 1 be in state of equilibrium, can not cause damaging such as sealed department, pipelines from bursting, the pump housing 1 causes the situation of damage and so on.
Claims (9)
1. the fire-fighting truck water pump of an energy automatic pressure-relieving, it comprises the pump housing (1) of (11,12) that has entery and delivery port, the gearbox (2) that connects with the pump housing (1) transmission, the power input shaft of gearbox (2) and the pto transmission of fire-fighting truck connect, and it is characterized in that being provided with an automatic pressure-relieving device (3) that forms water loop between being used for entery and delivery port (11,12) between the described entery and delivery port (11,12).
2. the fire-fighting truck water pump of energy automatic pressure-relieving according to claim 1, it is characterized in that described automatic pressure-relieving device (3) comprises Decompression valves (31), first, second water service pipe (32,33), one end of first water service pipe (32) is connected with the outlet pipe (121) on described water outlet (12) of continuing and communicates, and an end of the other end of first water service pipe (32) and Decompression valves (31) connects; One end of second water service pipe (33) is connected with the other end of Decompression valves (31), and the other end of second water service pipe (33) is connected with the intake pipe (111) on described water intake (11) of continuing and communicates.
3. the fire-fighting truck water pump of energy automatic pressure-relieving according to claim 2, it is characterized in that described Decompression valves (31) comprises valve pocket (311), valve seat (312), valve rod (313), spring (314), valve (315), one end of valve pocket (311) is connected with first water service pipe (32), the other end is connected with an end of valve seat (312), the other end of valve seat (312) is connected with second water service pipe (33), have first liquid outlet (3121) on the valve seat (312), first liquid outlet (3121) communicates with the valve pocket (3112) of valve pocket (311), valve rod (313) is located in the valve pocket (3112) of valve pocket (311), spring (314) is nested with on valve rod (313), and be bearing on the valve (315), and valve (315) is fixed on the end of valve rod (313), corresponding with the valve port (3111) of valve pocket (311), offer second liquid outlet (3151) that communicates with valve pocket (3112) on the valve (315).
4. the fire-fighting truck water pump of energy automatic pressure-relieving according to claim 3, it is characterized in that described Decompression valves (31) also includes first and connects nut (316), this first connects nut (316) and matches with valve pocket (311), and described first water service pipe (32) connects nut (316) by first and is connected with valve pocket (311) and communicates with described valve port (3111).
5. the fire-fighting truck water pump of energy automatic pressure-relieving according to claim 3, it is characterized in that described Decompression valves (3) also includes second and connects nut (317), this second connects nut (317) and matches with described valve seat (312), and described second water service pipe (33) connects nut (317) by second and is connected with valve seat (312) and communicates with the valve seat mouth (3122) of valve seat (312).
6. fire-fighting truck water pump that can automatic pressure-relieving according to claim 3, it is characterized in that described valve (315) be provided be used for valve port (3111) between form the sealing gasket (3152) that seals.
7. fire-fighting truck water pump that can automatic pressure-relieving according to claim 3 is characterized in that described valve (315) is the end that is fixed on valve rod (313) in the mode that is threaded.
8. the fire-fighting truck water pump of energy automatic pressure-relieving according to claim 6, the material that it is characterized in that described sealing gasket (3152) is rubber or nylon.
9. the fire-fighting truck water pump of energy automatic pressure-relieving according to claim 8, the material that it is characterized in that described sealing gasket (3152) is a rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100194266A CN101216045A (en) | 2008-01-07 | 2008-01-07 | Fire-fighting truck water pump capable of automatically unloading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100194266A CN101216045A (en) | 2008-01-07 | 2008-01-07 | Fire-fighting truck water pump capable of automatically unloading |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101216045A true CN101216045A (en) | 2008-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100194266A Pending CN101216045A (en) | 2008-01-07 | 2008-01-07 | Fire-fighting truck water pump capable of automatically unloading |
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| Country | Link |
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| CN (1) | CN101216045A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075598A (en) * | 2013-01-22 | 2013-05-01 | 苏州市捷达消防车辆装备有限公司 | Water outlet joint structure of fire pump |
| CN103736230A (en) * | 2013-10-28 | 2014-04-23 | 长沙中联消防机械有限公司 | Fire fighting truck, and water-fetching control device, system and method thereof |
| CN104373341A (en) * | 2014-11-05 | 2015-02-25 | 广州达意隆包装机械股份有限公司 | Overpressure protection device of positive displacement pump |
| CN109667768A (en) * | 2019-02-16 | 2019-04-23 | 李河 | A kind of automatically unloading formula fire-fighting truck water pump |
| CN109763984A (en) * | 2019-01-28 | 2019-05-17 | 王浩 | A kind of used in fire-fighting fire pump |
| CN113417861A (en) * | 2021-06-23 | 2021-09-21 | 蒋晓红 | Water pump with self-adaptation pressure release mechanism |
| CN113757102A (en) * | 2021-09-23 | 2021-12-07 | 贾小凤 | Anti-burst fire pump |
-
2008
- 2008-01-07 CN CNA2008100194266A patent/CN101216045A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075598A (en) * | 2013-01-22 | 2013-05-01 | 苏州市捷达消防车辆装备有限公司 | Water outlet joint structure of fire pump |
| CN103736230A (en) * | 2013-10-28 | 2014-04-23 | 长沙中联消防机械有限公司 | Fire fighting truck, and water-fetching control device, system and method thereof |
| CN104373341A (en) * | 2014-11-05 | 2015-02-25 | 广州达意隆包装机械股份有限公司 | Overpressure protection device of positive displacement pump |
| CN109763984A (en) * | 2019-01-28 | 2019-05-17 | 王浩 | A kind of used in fire-fighting fire pump |
| CN109667768A (en) * | 2019-02-16 | 2019-04-23 | 李河 | A kind of automatically unloading formula fire-fighting truck water pump |
| CN113417861A (en) * | 2021-06-23 | 2021-09-21 | 蒋晓红 | Water pump with self-adaptation pressure release mechanism |
| CN113417861B (en) * | 2021-06-23 | 2024-01-02 | 蒋晓红 | Water pump with self-adaptive pressure relief mechanism |
| CN113757102A (en) * | 2021-09-23 | 2021-12-07 | 贾小凤 | Anti-burst fire pump |
| CN113757102B (en) * | 2021-09-23 | 2023-09-29 | 山东建晟消防科技有限公司 | Explosion-proof fire pump |
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Open date: 20080709 |