CN203146426U - Novel axial flow pump - Google Patents
Novel axial flow pump Download PDFInfo
- Publication number
- CN203146426U CN203146426U CN 201320065977 CN201320065977U CN203146426U CN 203146426 U CN203146426 U CN 203146426U CN 201320065977 CN201320065977 CN 201320065977 CN 201320065977 U CN201320065977 U CN 201320065977U CN 203146426 U CN203146426 U CN 203146426U
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- horn mouth
- water
- flow
- pump
- blade
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Abstract
The utility model relates to a novel axial flow pump and belongs to the technical field of water pumps. The novel axial flow pump comprises a horn mouth and an impeller chamber, a guide vane body and an elbow which are connected with the horn mouth successively. The novel axial flow pump is characterized in that an inlet and an outlet of the horn mouth are circular, the diameter of the horn mouth is decreased gradually along the water flow direction, and the inlet diameter is 1.35 times to 1.50 times of the outlet diameter. Four to eight partition blades are uniformly arranged on the inner wall of the horn mouth, a flange is arranged at the outlet of the horn mouth, and the horn mouth is connected with the impeller chamber through the flange. The novel axial flow pump is reasonable and simple in structure and easy to manufacture. The partition blades are arranged on the inner wall of the horn mouth, so that the circumferential flow speed of the water flow of the inlet of the horn mouth can be effective inhibited, the water inlet condition of the water pump is improved, the backflow continuity of an impeller inlet can be effectively interrupted under the small flow, the water pump lift can be improved by 1.5% to 2.5% under the small flow, and the safety and the stability of the operation of the water pump are improved.
Description
Technical field
The utility model relates to the structural type of water pump, especially relates to the makeup of the imports of axial-flow pump, belongs to the pump technology field.
Background technique
In low lift water supply and sewage engineering, axial-flow pump is the pump type that often adopts, and has the advantage that flow is big, efficient is high.But the efficient district of axial-flow pump is narrower, the performance of the circumferential flow rate effect pump performance of import; At low flow rate condition, since the off-design point, the water inlet condition variation of water pump, and refluxing appears in impeller inlet, hinders water inlet, causes lift of pump to reduce mis-behave.
The model utility content
The purpose of this utility model is exactly to improve design at the shortcoming of existing axial-flow pump performance, and a kind of novel axial-flow pump is provided.Based on fluid mechanics principle and axial-flow pump design theory, to reach: make the circumferential flow velocity of horn mouth import current be reduced to minimum; Cut off the continuity that impeller inlet refluxes under the low flow rate condition; Guarantee axially water inlet, satisfy the design water inlet condition of axial-flow pump.
The purpose of this utility model is to realize like this, a kind of novel axial-flow pump, comprise horn mouth and the blade wheel chamber, diffuser, the elbow that are connected successively with horn mouth, it is characterized in that described bell-mouthed import and outlet are circle, horn mouth progressively dwindles along the diameter of water (flow) direction, inlet diameter is 1.35～1.50 times of outlet diameter, the horn mouth inwall is evenly arranged 4～8 partition blades, and the horn mouth outlet is provided with flange, and horn mouth is connected with blade wheel chamber by flange.
Described partition blade is blade-like, and is wide behind the paracone, and Extreme breadth is 0.20～0.30 times of impeller diameter, progressively increases along radial direction thickness, reaches maximum when arriving the horn mouth inwall, and the side projection of cutting off blade is streamlined along water (flow) direction.
The utility model is rational in infrastructure simple, manufacture easily, arrange the partition blade at the horn mouth inwall, the circumferential flow velocity that can suppress horn mouth import current effectively, improve the water inlet condition of water pump, can cut off the continuity that impeller inlet refluxes under low flow rate condition effectively, the pump head under the low flow rate condition can improve 1.5～2.5%, improves Security and the stability of water pump operation.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is partition blade structure schematic representation of the present utility model.
Fig. 3 be among Fig. 2 A to structural representation.
Fig. 4 is B-B sectional structure schematic representation among Fig. 2.
Among the figure: 1. horn mouth, 2. cut off blade, 3. blade wheel chamber, 4. impeller, 5. diffuser, 6. elbow, 7. pump shaft.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
A kind of novel axial-flow pump, formed with the blade wheel chamber 3 that is connected successively with horn mouth, diffuser 5, elbow 6 etc. by horn mouth 1, bell-mouthed import and outlet are circle, horn mouth progressively dwindles along the diameter of water (flow) direction, inlet diameter is 1.35～1.50 times of outlet diameter, the horn mouth inwall is evenly arranged 4～8 partition blades, and the horn mouth outlet is provided with flange, and horn mouth is connected with blade wheel chamber by flange.Cut off blade and be blade-like, wide behind the paracone, Extreme breadth is 0.20～0.30 times of impeller diameter, progressively increases along radial direction thickness, reaches maximum when arriving the horn mouth inwall, and the side projection of cutting off blade is streamlined along water (flow) direction.
The utility model is by evenly arranging the partition blade at novel horn mouth inwall, the circumferential flow velocity that has suppressed horn mouth import current effectively, under low flow rate condition, can cut off the continuity that impeller inlet refluxes effectively, reach the water inlet condition of improving water pump, improve the purpose of the pump head under the low flow rate condition.Current enter from novel horn mouth 1, through cutting off blade 2, enter blade wheel chamber 3, and impeller 4 rotates under the driving of pump shaft 7, obtain the current of energy through diffuser 5, flow out from the outlet of elbow 6.
Each concrete technical characteristics described in above-mentioned embodiment can carry out combination in any by any suitable manner, and it falls within the scope disclosed in the utility model equally.Simultaneously, also can carry out combination in any between the various mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.In addition; the utility model is not limited to the detail in the above-mentioned mode of execution; in technical conceive scope of the present utility model, can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.Protection domain of the present utility model is defined by the claims.
Claims (2)
1. novel axial-flow pump, comprise horn mouth and the blade wheel chamber, diffuser, the elbow that are connected successively with horn mouth, it is characterized in that, described bell-mouthed import and outlet are circle, horn mouth progressively dwindles along the diameter of water (flow) direction, and inlet diameter is 1.35～1.50 times of outlet diameter, and the horn mouth inwall is evenly arranged 4～8 and cut off blade, the horn mouth outlet is provided with flange, and horn mouth is connected with blade wheel chamber by flange.
2. a kind of novel axial-flow pump according to claim 1, it is characterized in that, described partition blade is blade-like, wide behind the paracone, Extreme breadth is 0.20～0.3 times of impeller diameter, progressively increase along radial direction thickness, reach maximum when arriving the horn mouth inwall, the side projection of cutting off blade is streamlined along water (flow) direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320065977 CN203146426U (en) | 2013-02-05 | 2013-02-05 | Novel axial flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320065977 CN203146426U (en) | 2013-02-05 | 2013-02-05 | Novel axial flow pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203146426U true CN203146426U (en) | 2013-08-21 |
Family
ID=48973953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320065977 Expired - Fee Related CN203146426U (en) | 2013-02-05 | 2013-02-05 | Novel axial flow pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203146426U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640769A (en) * | 2016-12-01 | 2017-05-10 | 河海大学 | Conical water inflow device for improving instability hydraulic characteristic of axial flow pump |
| CN113339318A (en) * | 2021-06-21 | 2021-09-03 | 江苏大学 | Stall-resistant double-layer pump inlet structure |
| WO2022042025A1 (en) * | 2020-08-27 | 2022-03-03 | 三星（温岭）水泵有限公司 | Pump head of deep-well pump |
-
2013
- 2013-02-05 CN CN 201320065977 patent/CN203146426U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640769A (en) * | 2016-12-01 | 2017-05-10 | 河海大学 | Conical water inflow device for improving instability hydraulic characteristic of axial flow pump |
| WO2022042025A1 (en) * | 2020-08-27 | 2022-03-03 | 三星（温岭）水泵有限公司 | Pump head of deep-well pump |
| CN113339318A (en) * | 2021-06-21 | 2021-09-03 | 江苏大学 | Stall-resistant double-layer pump inlet structure |
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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: 20130821 Termination date: 20160205 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |