CN202833310U - Constant-voltage fire pump - Google Patents
Constant-voltage fire pump Download PDFInfo
- Publication number
- CN202833310U CN202833310U CN 201220462396 CN201220462396U CN202833310U CN 202833310 U CN202833310 U CN 202833310U CN 201220462396 CN201220462396 CN 201220462396 CN 201220462396 U CN201220462396 U CN 201220462396U CN 202833310 U CN202833310 U CN 202833310U
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- Prior art keywords
- pump
- constant
- prime mover
- constant voltage
- fire
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Abstract
The utility model discloses a constant-voltage fire pump which comprises a prime motor and a fire pump head connected with the prime motor. The fire pump head comprises a pump cover connected with the prime motor, and a seal cavity is formed by connecting the pump cover and a pump body. A pump inlet and a pump outlet are arranged at two sides of the pump body, and a running water way is formed by the pump inlet and the pump outlet. A constant-voltage centrifugal impeller is arranged in the running water way, the constant-voltage centrifugal impeller is connected with the prime motor through a pump shaft, and the prime motor drives the centrifugal impeller to rotate through the pump shaft. The constant-voltage centrifugal impeller is formed by a plurality of arc-shaped blades, and an exit setting angle of each blade is 90 degrees. A performance curve of the pump can be flat by utilizing the constant-voltage centrifugal impeller with a special blade structure, quasi constant pressure delivery lift within a certain flow range is achieved, and the purpose of quasi constant pressure is achieved; moreover, the purposes of constant pressure and high efficiency can be achieved in no need of external equipment, and working efficiency and performance of the constant-voltage fire pump are improved.
Description
Technical field
The utility model relates to the fire water pump field, is specifically related to a kind of constant pressure fire pump.
Background technique
For the requirement of reply fire water pump market to constant voltage, mainly contain in the market two class constant pressure fire pumps.One class is tangent fire pumps, belongs to the category of partial emission pump, because of the blade exit laying angle near 90 degree, lift has the characteristics of accurate constant voltage in the certain flow scope, but such pump efficiency is low, to compare match power bigger than normal with conventional pumps, has high input; Another kind of is at Ordinary Centrifugal Pumps outlet dress hydraulic control valve, set rated pressure, when centrifugal pump under the less operating mode of flow, hydraulic control valve was opened when pump discharge pressure surpassed setting value, part water is got back to pump inlet through the relief port of valve, reaches the characteristics of accurate constant voltage, and such is actual to be the pump group, damage such as hydraulic control valve, the pump group will lose pressure-keeping functions.
The model utility content
The technical problems to be solved in the utility model provides a kind of constant pressure fire pump, need not to utilize external equipment just can reach constant voltage, efficient purpose, has improved working efficiency and the performance of constant pressure fire pump.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of constant pressure fire pump, the fire water pump pump head that comprises prime mover and be connected with prime mover, described fire water pump pump head comprises the pump cover that is connected with prime mover, pump cover and the pump housing are connected to form an airtight cavity, described pump housing both sides arrange Pump Suction Nozzle and pump discharge, described Pump Suction Nozzle and pump discharge form first-class water route, described flowing water is provided with the constant voltage receded disk impeller in the path, described constant voltage receded disk impeller links to each other with prime mover by pump shaft, and prime mover drives the constant voltage receded disk impeller by pump shaft and rotates.
Preferably, described constant voltage receded disk impeller is made of some arc shaped blades, and the outlet laying angle of described arc shaped blade is 90 °.
Preferably, the connection part of described pump cover and pump shaft also is provided with shaft seal assembly, shaft seal assembly comprises rotating ring and stationary ring, described rotating ring is done High Rotation Speed with the constant voltage receded disk impeller, described stationary ring is fixed on the pump cover, rotating ring and stationary ring form end face seal by friction pair, reach to stop the interior liquid leakage of the pump housing and prevent that the pump housing outer air from leaking in the pump.
Preferably, described prime mover is motor.
By technique scheme, the beneficial effects of the utility model are:
The utility model makes the pump performance curve more flat by the constant voltage receded disk impeller that adopts the special vane structure, lift has the characteristics of accurate constant voltage in the certain flow scope, reach the purpose of accurate constant voltage, and need not to utilize external equipment just can reach constant voltage, efficient purpose, improved working efficiency and the performance of constant pressure fire pump.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of impeller of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
With reference to Fig. 1, a kind of constant pressure fire pump, comprise prime mover 1 and the fire water pump pump head that is connected with prime mover 1, described fire water pump pump head comprises the pump cover 2 that is connected with prime mover, pump cover 2 is connected to form an airtight cavity with the pump housing 3, the described pump housing 2 both sides arrange Pump Suction Nozzle 4 and pump discharge 5, described Pump Suction Nozzle 4 forms first-class water route with pump discharge 5, described flowing water is provided with constant voltage receded disk impeller 6 in the path, described constant voltage receded disk impeller 6 links to each other with prime mover 1 by pump shaft 7, and prime mover 1 drives constant voltage receded disk impeller 6 by pump shaft 7 and rotates.
Preferably, described constant voltage receded disk impeller 6 is made of some arc shaped blades, and the outlet laying angle of described arc shaped blade is 90 °.
Preferably, described pump cover 2 also is provided with shaft seal assembly 8 with the connection part of pump shaft 7, shaft seal assembly 8 comprises rotating ring 9 and stationary ring 10, described rotating ring 9 is done High Rotation Speed with constant voltage receded disk impeller 6, described stationary ring 10 is fixed on the pump cover 2, rotating ring 9 and stationary ring 10 form end face seal by friction pair, reach to stop the interior liquid leakage of the pump housing and prevent that the pump housing outer air from leaking in the pump.
Preferably, described prime mover 1 is motor.
The below does simple declaration to working principle of the present utility model:
Actuating motor 1, constant voltage receded disk impeller 6 is High Rotation Speed under motor 1 drives, and the liquid work done of carrying from Pump Suction Nozzle 4 is produced the lift (pressure) of accurate constant voltage, discharges through pump discharge 5.Finish the overall process that the mechanical energy of prime mover is changed into the energy (kinetic energy, pressure energy, potential energy) of liquid, realize simultaneously liquid by low pressure to high pressure; By lower position to the high position; Purpose with long distance conveying.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. constant pressure fire pump, it is characterized in that: the fire water pump pump head that comprises prime mover and be connected with prime mover, described fire water pump pump head comprises the pump cover that is connected with prime mover, pump cover and the pump housing are connected to form an airtight cavity, described pump housing both sides arrange Pump Suction Nozzle and pump discharge, described Pump Suction Nozzle and pump discharge form first-class water route, described flowing water is provided with the constant voltage receded disk impeller in the path, described constant voltage receded disk impeller links to each other with prime mover by pump shaft, and prime mover drives the constant voltage receded disk impeller by pump shaft and rotates.
2. a kind of constant pressure fire pump according to claim 1, it is characterized in that: described constant voltage receded disk impeller is made of some arc shaped blades, and the outlet laying angle of described arc shaped blade is 90 °.
3. a kind of constant pressure fire pump according to claim 1, it is characterized in that: the connection part of described pump cover and pump shaft also is provided with shaft seal assembly, shaft seal assembly comprises rotating ring and stationary ring, described rotating ring is done High Rotation Speed with the constant voltage receded disk impeller, described stationary ring is fixed on the pump cover, rotating ring and stationary ring form end face seal by friction pair, reach to stop the interior liquid leakage of the pump housing and prevent that the pump housing outer air from leaking in the pump.
4. a kind of constant pressure fire pump according to claim 1, it is characterized in that: described prime mover is motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220462396 CN202833310U (en) | 2012-09-12 | 2012-09-12 | Constant-voltage fire pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220462396 CN202833310U (en) | 2012-09-12 | 2012-09-12 | Constant-voltage fire pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202833310U true CN202833310U (en) | 2013-03-27 |
Family
ID=47945027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220462396 Expired - Fee Related CN202833310U (en) | 2012-09-12 | 2012-09-12 | Constant-voltage fire pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202833310U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438389A (en) * | 2016-12-13 | 2017-02-22 | 荆门市召铭液压科技有限公司 | Constant pressure vertical type fire pump |
-
2012
- 2012-09-12 CN CN 201220462396 patent/CN202833310U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438389A (en) * | 2016-12-13 | 2017-02-22 | 荆门市召铭液压科技有限公司 | Constant pressure vertical type fire pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20150912 |
|
| EXPY | Termination of patent right or utility model |