CN202789699U - Centrifugal pump for firefighting - Google Patents
Centrifugal pump for firefighting Download PDFInfo
- Publication number
- CN202789699U CN202789699U CN 201220511923 CN201220511923U CN202789699U CN 202789699 U CN202789699 U CN 202789699U CN 201220511923 CN201220511923 CN 201220511923 CN 201220511923 U CN201220511923 U CN 201220511923U CN 202789699 U CN202789699 U CN 202789699U
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- CN
- China
- Prior art keywords
- inducer
- pump
- pump cover
- rotating shaft
- fire
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- Expired - Fee Related
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Abstract
The utility model provides a novel centrifugal pump for firefighting. The centrifugal pump comprises a pump body, an impeller and a rotation shaft, the pump body is composed of a front pump cover, a rear pump cover and a hanging frame, the rotation shaft is sequentially sleeved on the front pump cover, the impeller, the rear pump cover and the hanging frame, a guide bearing is arranged between the rotation shaft and the front pump cover, a rear bearing is arranged between the rotation shaft and the hanging frame, a rear bearing gland is installed at the outer end of the rear bearing, an inducer is installed in the pump body, sleeved on the rotation shaft and located between a front pump body and the impeller, by means of the inducer, the suction stroke of the centrifugal pump is increased, and the requirement of low water levels of a water supply source is met during firefighting water taking.
Description
Technical field
The utility model relates to a kind of Far Range centrifugal pump, belongs to the centrifugal pump technical field.
Background technique
At present, the existing centrifugal pump suction degree of depth generally can reach about 3 meters, the centrifugal pump that fire-fighting fire extinguishing is used, 3 meters the suction degree of depth often can't meet the demands, when water level lower season, the suction degree of depth will reach 3-5 rice, and the requirement of family stranger water intaking in the time of could well satisfying fire extinguishing is so be necessary existing centrifugal pump is improved.
Summary of the invention
The utility model provides a kind of novel centrifugal pump, and this fire-fighting is darker with the centrifugal pump suction degree of depth, can satisfy the requirement of fire-fighting suction.
The purpose of this utility model realizes by following measures:
A kind of fire-fighting centrifugal pump, this pump comprises the pump housing, impeller and rotating shaft, the pump housing is assembled by front pump cover, rear pump cover and suspension, rotating shaft is sleeved on front pump cover, impeller, rear pump cover and the suspension successively, is provided with guide bearing between rotating shaft and the front pump cover, is provided with rear bearing between rotating shaft and the suspension, the rear bearing gland is equipped with in the rear bearing outer end, it is characterized in that: inducer also is housed in the pump housing, and this inducer is sleeved in the rotating shaft, and between the front pump housing and impeller.
Further design of the present utility model is: inducer is a double helix, and the inducer middle part is provided with axis hole, and this axis hole and described rotating shaft are suitable, and double-helical external diameter and the described front pump cover of inducer are suitable.
The double-spiral structure of described this inducer, its length adopts a pitch.
The head end of described inducer is towards front pump cover, and head end is provided with lead angle, and this lead angle adopts spirality asymptote to seamlessly transit.
Inducer sees that from head end the double helix direction is for counterclockwise.
Double-helical two spiral initial positions differ 180 degree.
The utility model has following advantage compared to existing technology:
Fire-fighting centrifugal pump of the present utility model has designed inducer on its structure, thereby has increased the suction degree of depth of centrifugal pump.This pump is reasonable in design, compact structure.
Fire-fighting centrifugal pump of the present utility model, the suction degree of depth is darker, can satisfy low water level season, the needs of outdoor water intaking fire extinguishing.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is inducer and rotating shaft assembling schematic representation.
Fig. 3 is the right elevation of Fig. 2.
Among the figure: the 1-pump housing; The 2-front pump cover; The 3-seal ring; The 4-inducer; 4-1 the first spiral; 4-2 the second spiral; 4-3 head end lead angle; The 5-guide bearing; The 6-impeller; Seal ring; 9-O type circle; The 10-hex head bolt; The 11-spring washer; The 12-support; The 13-hex head bolt; The 14-plug; 15-rear bearing gland; The 16-nut; The 17-double-screw bolt; The 18-hex head bolt; The 19-bearing; The 20-suspension; The 21-rear pump cover; The 22-rotating shaft.
Embodiment
As shown in Figure 1, fire-fighting centrifugal pump of the present utility model, this pump comprises the pump housing, impeller and rotating shaft, and the pump housing is assembled by front pump cover, rear pump cover and suspension, and rotating shaft is sleeved on front pump cover, impeller, rear pump cover and the suspension successively, be provided with guide bearing between rotating shaft and the front pump cover, be provided with rear bearing between rotating shaft and the suspension, the rear bearing gland is equipped with in the rear bearing outer end, and inducer also is housed in the pump housing, this inducer is sleeved in the rotating shaft, and between the front pump housing and impeller.Impeller and inducer and front pump cover fitting surface are provided with seal ring 3; Impeller and rear pump cover fitting surface are provided with seal ring 8.Also be provided with the filler Gland between rear pump cover and the suspension.Pump housing bottom is provided with support 12 and supports.
Such as Fig. 2, shown in Figure 3, inducer of the present utility model is a double helix, and the inducer middle part is provided with axis hole, and this axis hole and described rotating shaft are suitable, and double-helical external diameter and the described front pump cover of inducer are suitable.The double-spiral structure of this inducer, its length adopts a pitch.The head end of inducer is towards front pump cover, and head end is provided with lead angle, and double-helical lead angle adopts the spirality asymptote to seamlessly transit.Inducer is seen the double helix direction for counterclockwise from head end, and rear carbonyl sees that double helix is clockwise direction.The initial position of double-helical the first spiral 4-1 and the second spiral 4-2 spiral differs 180 degree.
Fire-fighting of the present utility model can be as follows with the Centrifugal Pump Design parameter:
When 1, inhaling dark 5 meters, flow is 700M3/h, head pressure 1.3MPa, and maximum shaft power is no more than 320kW, rotating speed 1800rpm.
When 2, inhaling dark 5 meters, flow is 490M3/h, head pressure 1.7MPa.
Claims (6)
1. fire-fighting centrifugal pump, this pump comprises the pump housing, impeller and rotating shaft, the pump housing is assembled by front pump cover, rear pump cover and suspension, rotating shaft is sleeved on front pump cover, impeller, rear pump cover and the suspension successively, is provided with guide bearing between rotating shaft and the front pump cover, is provided with rear bearing between rotating shaft and the suspension, the rear bearing gland is equipped with in the rear bearing outer end, it is characterized in that: inducer also is housed in the pump housing, and this inducer is sleeved in the rotating shaft, and between the front pump housing and impeller.
2. fire-fighting centrifugal pump according to claim 1, it is characterized in that: described inducer is a double helix, and the inducer middle part is provided with axis hole, and this axis hole and described rotating shaft are suitable, and double-helical external diameter and the described front pump cover of inducer are suitable.
3. fire-fighting centrifugal pump according to claim 1 and 2 is characterized in that: the double-spiral structure of described this inducer, pitch of its length employing.
4. fire-fighting centrifugal pump according to claim 3 is characterized in that: the head end of described inducer is towards front pump cover, and head end is provided with lead angle, and this lead angle adopts spirality asymptote to seamlessly transit.
5. fire-fighting centrifugal pump according to claim 4 is characterized in that: described inducer sees that from head end the double helix direction is for counterclockwise.
6. fire-fighting centrifugal pump according to claim 4 is characterized in that: described double-helical two spiral initial positions differ 180 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220511923 CN202789699U (en) | 2012-10-08 | 2012-10-08 | Centrifugal pump for firefighting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220511923 CN202789699U (en) | 2012-10-08 | 2012-10-08 | Centrifugal pump for firefighting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202789699U true CN202789699U (en) | 2013-03-13 |
Family
ID=47816968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220511923 Expired - Fee Related CN202789699U (en) | 2012-10-08 | 2012-10-08 | Centrifugal pump for firefighting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202789699U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410742A (en) * | 2013-08-15 | 2013-11-27 | 陈彦朗 | Compound pump |
-
2012
- 2012-10-08 CN CN 201220511923 patent/CN202789699U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410742A (en) * | 2013-08-15 | 2013-11-27 | 陈彦朗 | Compound 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20161008 |