CN204082647U - A kind of vertical constant-pressure fire-fighting pump - Google Patents
A kind of vertical constant-pressure fire-fighting pump Download PDFInfo
- Publication number
- CN204082647U CN204082647U CN201420541423.XU CN201420541423U CN204082647U CN 204082647 U CN204082647 U CN 204082647U CN 201420541423 U CN201420541423 U CN 201420541423U CN 204082647 U CN204082647 U CN 204082647U
- Authority
- CN
- China
- Prior art keywords
- pump
- prime mover
- impeller
- fire
- unshrouded impeller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a kind of vertical constant-pressure fire-fighting pump, the fire water pump pump head comprising prime mover and be connected with prime mover, described fire water pump pump head is made up of pump cover and the pump housing, pump cover and the pump housing are connected to form a pumping chamber, described pump housing both sides are provided with Pump Suction Nozzle and pump discharge, described Pump Suction Nozzle and pump discharge form first-class water route, one unshrouded impeller is set in described pumping chamber, described unshrouded impeller is connected with the extension shaft of prime mover, unshrouded impeller is arranged on the extension shaft of prime mover, and fastening by impeller nut.Drive unshrouded impeller to rotate by prime mover by extension shaft, impeller makes pump performance curve more flat, and within the scope of certain flow, lift has the feature of accurate constant voltage, realizes the object of constant voltage; By adopting unshrouded impeller, when not using for a long time, unshrouded impeller and the pump housing can not become rusty extremely, improve Safety performance.
Description
Technical field
The utility model relates to fire water pump technical field, particularly relates to the vertical constant-pressure fire-fighting pump that a kind of pressure surge that can prevent causing greatly because of changes in flow rate is large.
Background technique
Fire water pump is mainly arranged on fire-fighting truck, fixed fire extinguishing system or other fire fighting device, is used as the fire water pump use of liquid extinguisher such as conveying water or Foam solution etc., can be divided into different kinds according to different mode classifications.It with hermetically sealed, No leakage, corrosion resistantly prevent stuck feature without choma, the departments such as environmental protection, water treatment, fire-fighting that can be widely used in are used for pumping each class I liquid I, are the ideal pumps creating No leakage, pollution-free civilized workshop, civilized factory.For reply fire water pump market is to the requirement of constant voltage, mainly contain two class constant pressure fire pumps in the market.One class is tangent fire pumps, belongs to the category of partial emission pump, and because blade exit laying angle is close to 90 degree, within the scope of certain flow, lift has the feature of accurate constant voltage; Another kind of is at Ordinary Centrifugal Pumps outlet dress hydraulic control valve, setting rated pressure, when centrifugal pump is under the operating mode that flow is less, when pump discharge pressure exceedes setting value, hydraulic control valve is opened, part water gets back to pump inlet through the relief port of valve, reaches the feature of accurate constant voltage.
The distinguishing feature of constant pressure fire pump is flow--head curve very smooth (lift change is very little within the scope of full flow, particularly the not superpressure when small flow), a pressure surge difficult problem greatly when solving the change of fire supply flow in process.Mainly be applicable at present the feedwater that fire-fighting system (fire hydrant suppression system, from spraying fire-extinguishing system and water spray fire extinguish system) fixed by industry and civil building, especially use and tall building zoned fire detection water supply system.According to a kind of constant pressure fire pump that Chinese Patent Application No. is 201220462396.8 announcements, what adopt is receded disk impeller, inefficiency, and during water flow change, pressure change obviously, particularly easy superpressure during small flow, do not use for a long time impeller easily and pump housing rust extremely.
Model utility content
The utility model, in order to overcome deficiency of the prior art, provides a kind of vertical constant-pressure fire-fighting pump, adopts unshrouded impeller, prevents rust dead, improves Safety performance.
The utility model is achieved through the following technical solutions:
A kind of vertical constant-pressure fire-fighting pump, the fire water pump pump head comprising prime mover and be connected with prime mover, described fire water pump pump head is made up of pump cover and the pump housing, pump cover and the pump housing are connected to form a pumping chamber, and described pump housing both sides are provided with Pump Suction Nozzle and pump discharge, and described Pump Suction Nozzle and pump discharge form first-class water route, one unshrouded impeller is set in described pumping chamber, described unshrouded impeller is connected with the extension shaft of prime mover, and unshrouded impeller is arranged on the extension shaft of prime mover, and fastening by impeller nut.
As optimal technical scheme of the present utility model, be equipped with for preventing liquid to the mechanical sealing assembly of seepage outside the described pump housing in the middle of described unshrouded impeller and pump cover.
As optimal technical scheme of the present utility model, described mechanical sealing assembly comprises moving ring assembly and static components, and moving ring assembly is arranged on rotating seat, and static components is arranged on stationary seat.
Compared with prior art, the beneficial effects of the utility model are:
1, drive unshrouded impeller to rotate by prime mover by extension shaft, impeller makes pump performance curve more flat, and within the scope of certain flow, lift has the feature of accurate constant voltage, realizes the object of constant voltage;
2, by adopting unshrouded impeller, when not using for a long time, unshrouded impeller and the pump housing can not become rusty extremely, improve Safety performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A portion enlarged view in Fig. 1,
Fig. 3 is the structural representation of the utility model middle open type impeller.
In figure: 1-prime mover; 2-pump cover; The 3-pump housing; 4-Pump Suction Nozzle; 5-pump discharge; 6-unshrouded impeller; 7-extension shaft; 8-impeller nut; 9-mechanical sealing assembly; 10-moving ring assembly; 11-static components.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, Fig. 2 and Fig. 3, Fig. 1 is structural representation of the present utility model, and Fig. 2 is the A portion enlarged view in Fig. 1, and Fig. 3 is the structural representation of the utility model middle open type impeller.
Described a kind of vertical constant-pressure fire-fighting pump, the fire water pump pump head comprising prime mover 1 and be connected with prime mover 1, described fire water pump pump head is made up of pump cover 2 and the pump housing 3, and pump cover 2 and the pump housing 3 adopt HT200 material to make.Pump cover 2 and the pump housing 3 are connected to form a pumping chamber, the described pump housing 3 both sides are provided with Pump Suction Nozzle 4 and pump discharge 5, described Pump Suction Nozzle 4 forms first-class water route with pump discharge 5, one unshrouded impeller 6 is set in described pumping chamber, described unshrouded impeller 6 is connected with the extension shaft 7 of prime mover 1, unshrouded impeller 6 is arranged on the extension shaft 7 of prime mover 1, and fastening by impeller nut 8.
Be equipped with for preventing liquid to the mechanical sealing assembly 9 of the outer seepage of the described pump housing 3 in the middle of described unshrouded impeller 6 and pump cover 2, mechanical sealing assembly 9 comprises moving ring assembly 10 and static components 11, moving ring assembly 10 is arranged on rotating seat, and static components 11 is arranged on stationary seat.Moving ring assembly 10 does High Rotation Speed with constant voltage unshrouded impeller 6, described static components 11 is fixed on pump cover 2, moving ring assembly 10 and static components 11 form end face seal by friction pair, reach and to stop in the pump housing fluid leakage and prevent the pump housing outer air from leaking in pump.
In use, start prime mover 1, unshrouded impeller 6 is High Rotation Speed under prime mover 1 drives, the liquid work done of carrying from Pump Suction Nozzle 4 is produced to the lift (pressure) of accurate constant voltage, discharge through pump discharge 5, complete the mechanical energy of prime mover the overall process of the energy (kinetic energy, pressure energy, potential energy) being liquid, to realize liquid by low pressure to high pressure simultaneously; By lower position to high position; And the object of long distance delivery.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. a vertical constant-pressure fire-fighting pump, the fire water pump pump head comprising prime mover (1) and be connected with prime mover (1), described fire water pump pump head is made up of pump cover (2) and the pump housing (3), pump cover (2) and the pump housing (3) are connected to form a pumping chamber, the described pump housing (3) both sides are provided with Pump Suction Nozzle (4) and pump discharge (5), described Pump Suction Nozzle (4) and pump discharge (5) form first-class water route, it is characterized in that: a unshrouded impeller (6) is set in described pumping chamber, described unshrouded impeller (6) is connected with the extension shaft (7) of prime mover (1), unshrouded impeller (6) is arranged on the extension shaft (7) of prime mover (1), and it is fastening by impeller nut (8).
2. a kind of vertical constant-pressure fire-fighting pump according to claim 1, is characterized in that: be equipped with for preventing liquid to the mechanical sealing assembly (9) of the described pump housing (3) outer seepage in the middle of described unshrouded impeller (6) and pump cover (2).
3. a kind of vertical constant-pressure fire-fighting pump according to claim 2, it is characterized in that: described mechanical sealing assembly (9) comprises moving ring assembly (10) and static components (11), moving ring assembly (10) is arranged on rotating seat, and static components (11) is arranged on stationary seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420541423.XU CN204082647U (en) | 2014-09-19 | 2014-09-19 | A kind of vertical constant-pressure fire-fighting pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420541423.XU CN204082647U (en) | 2014-09-19 | 2014-09-19 | A kind of vertical constant-pressure fire-fighting pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082647U true CN204082647U (en) | 2015-01-07 |
Family
ID=52175370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420541423.XU Expired - Fee Related CN204082647U (en) | 2014-09-19 | 2014-09-19 | A kind of vertical constant-pressure fire-fighting pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204082647U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864103A (en) * | 2016-03-30 | 2016-08-17 | 上海卫星工程研究所 | Diffusion pipe structure |
-
2014
- 2014-09-19 CN CN201420541423.XU patent/CN204082647U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864103A (en) * | 2016-03-30 | 2016-08-17 | 上海卫星工程研究所 | Diffusion pipe structure |
| CN105864103B (en) * | 2016-03-30 | 2019-06-07 | 上海卫星工程研究所 | Diffuser structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201671823U (en) | Single-stage and single-suction centrifugal pump | |
| CN204082647U (en) | A kind of vertical constant-pressure fire-fighting pump | |
| CN210845063U (en) | Actuating mechanism for adding water-based polymer fire extinguishing additive | |
| CN205503478U (en) | Energy -efficient water pump | |
| CN205779850U (en) | A kind of water pump of band self-priming water storage function | |
| CN205401147U (en) | Steerable outlet pressure fire pump | |
| CN205243923U (en) | Open double suction centrifugal pump in level | |
| CN204458380U (en) | A kind of twin-stage is without sealing self-controlling self-priming pump | |
| CN202971217U (en) | Vertical type volute double suction pipeline pump | |
| CN202833310U (en) | Constant-voltage fire pump | |
| CN207647843U (en) | Energy-efficient high cavitation performance double entry pump | |
| CN206917865U (en) | A kind of vertical no-sealed self-sucking pump | |
| CN206290448U (en) | A kind of novel constant-pressure pump | |
| CN206268125U (en) | A kind of anti-occlusion sealing ring of centrifugal multistage pump multiple centrifugal pump | |
| CN204572472U (en) | A kind of rotational flow self-priming pump | |
| CN210660548U (en) | Plunger pump | |
| CN205277893U (en) | Centrifugal pump pump priming device | |
| CN211082287U (en) | Self-priming pump | |
| CN205446089U (en) | Adjustable fire pump of flow | |
| CN103032335B (en) | Dual-purpose self-priming pump for sprinkler irrigation and drip irrigation | |
| CN212838422U (en) | Vacuum pump is used in thermos flask courage production | |
| CN215505268U (en) | Hand-lift motor-driven fire pump | |
| CN202883393U (en) | Centrifugal pump with overpressure protection device | |
| CN210769500U (en) | Quick self-suction efficient horizontal self-suction pump with suction port at rear end | |
| CN206874569U (en) | Pump cavitation suppresses injection booster |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: SHANGHAI DANBO PUMP CO., LTD. Document name: Notification to Pay the Fees |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20150919 |
|
| EXPY | Termination of patent right or utility model |