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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- CN
- China
- Prior art keywords
- bell mouth
- inlet
- diameter
- pump
- outlet
- 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
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000005192 partition Methods 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 abstract 1
- 230000008676 import Effects 0.000 description 7
- 238000010992 reflux Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
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Abstract
一种新型的轴流泵，属于水泵技术领域。包括喇叭口和与喇叭口依次连接的叶轮室、导叶体、弯头，其特征是，所述喇叭口的进口与出口均为圆形，喇叭口沿水流方向的直径逐步缩小，进口直径为出口直径的1.35～1.50倍，喇叭口内壁均匀布置4～8片隔断叶片，喇叭口出口设有法兰，喇叭口通过法兰与叶轮室连接。本实用新型结构合理简单，生产制造容易，在喇叭口内壁布置隔断叶片，能有效地抑制喇叭口进口水流的周向流速，改善水泵的进水条件，能在小流量工况下有效地隔断叶轮进口回流的连续性，小流量工况下的水泵扬程可提高1.5～2.5%，提高水泵运行的安全性和稳定性。
A novel axial flow pump belongs to the technical field of water pumps. It includes a bell mouth and an impeller chamber, a guide vane body, and an elbow connected to the bell mouth in sequence. It is characterized in that the inlet and outlet of the bell mouth are circular, and the diameter of the bell mouth along the water flow direction gradually decreases. The diameter of the inlet is The diameter of the outlet is 1.35-1.50 times, and the inner wall of the bell mouth is evenly arranged with 4-8 pieces of partition blades. The outlet of the bell mouth is provided with a flange, and the bell mouth is connected to the impeller chamber through the flange. The utility model has a reasonable and simple structure, and is easy to manufacture. Partition blades are arranged on the inner wall of the bell mouth, which can effectively suppress the circumferential flow velocity of the water flow at the bell mouth inlet, improve the water inlet conditions of the water pump, and effectively block the impeller under small flow conditions. The continuity of the inlet return flow, the pump lift under small flow conditions can be increased by 1.5-2.5%, and the safety and stability of the pump operation can be 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)
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20160205 |