CN207814033U - A kind of impeller of efficient exteenal reflux submersible sewage pump - Google Patents
A kind of impeller of efficient exteenal reflux submersible sewage pump Download PDFInfo
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- CN207814033U CN207814033U CN201721617990.9U CN201721617990U CN207814033U CN 207814033 U CN207814033 U CN 207814033U CN 201721617990 U CN201721617990 U CN 201721617990U CN 207814033 U CN207814033 U CN 207814033U
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- impeller
- blade
- front shroud
- efficient
- pump
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Abstract
The utility model discloses a kind of impellers of efficient exteenal reflux submersible sewage pump, it is characterised in that the motor shaft of impeller and submersible motor（5）Using taper fit and it is equipped with impeller nut and fixes；The impeller includes two blades and front shroud, the front end of the blade, the front end of front shroud are identical as the interior loop-shaped of the pedestal, and form impeller clearance, the impeller uses the wide blade impeller of double helix of band part front shroud, the blade of the import axial direction part of the impeller is open type blade, and the front end of blade is stretched out except the front shroud.The utility model effectively improves the blocking of blade passage, and the turn fractions and entrance edge of blade improved in flowing generate winding, improve the working efficiency of pump.
Description
Technical field
The utility model is related to pump equipment field, specifically a kind of impeller of efficient exteenal reflux submersible sewage pump.
Background technology
Sewage disposal exteenal reflux technique in tradition generally uses proof submersible sand discharging pump, submersible mixed-flow pump and submersible axial flow pump
Deng.Proof submersible sand discharging pump is used in big flow, low lift, and efficiency is very low, and vibrates big, unit operation poor reliability；Submersible mixed-flow
Pump and submersible axial flow pump have the characteristics of big flow, low lift, but its Hydraulic Design is to be based on water medium, does not account for dirt
The dielectric properties such as water, sludge, therefore the efficiency of pump is relatively low.Meanwhile most fatal disadvantage is, and when these pumps convey mud mixed liquids, stream
Amount can significantly decline, and according to general statistics, fall is up to 40%, and reflux ratio requirement is not achieved, and seriously affects sewage disposal effect
Fruit.
The characteristic of returnedactivatedsludge is that solid-liquid mixes and with certain viscosity, the blade passage of the existing pump housing is easy to be blocked up
It fills in, the impurity in returnedactivatedsludge is easy to happen generation winding in the turn fractions and entrance edge of blade of flowing, influences pump
Working efficiency.
General double-channel impeller blade is thick and solid, heavy, when lift is higher（Ns is small）With it is relatively low（Ns is big）When blade profile it is inadequate
Rationally, less efficient；Though the inside Impeller in Screw Centrifugal Pump of the N pumps and the production of Hai Site companies of external some companies power production like flying
The conveying of activated sludge can so be met to a certain degree, but because casting and processing request are higher, price, and safeguard inconvenience.
Invention content
The purpose of this utility model is to provide a kind of impeller of efficient exteenal reflux submersible sewage pump.
The utility model will solve in existing sewage disposal exteenal reflux technique, and the blade design of pump is unreasonable, blade flow
The problem of road is easy to block, and working efficiency is low, unit operation poor reliability.
The technical solution of the utility model is:A kind of impeller of efficient exteenal reflux submersible sewage pump, including pedestal, impeller with it is latent
The motor shaft 5 of hydroelectric machine uses taper fit and is equipped with impeller nut and fixes；The impeller includes two blades and front shroud,
The front end of the blade, the front end of front shroud are identical as the interior loop-shaped of the pedestal, and form impeller clearance, described
Impeller uses the wide blade impeller of double helix of band part front shroud, and the blade of the import axial direction part of the impeller is open type blade,
The front end of blade is stretched out except the front shroud.
The beneficial effects of the utility model are：Spy of the utility model with double-channel impeller and screw centrifugal
Point, exit width is big, and handling capacity is big, and impeller inlet is flow conductivity good, and it is thick and solid, bulky to overcome double-channel impeller blade
The difficult disadvantage of insufficient and single-screw centrifugal impeller manufacture, impeller balance is good, and pump performance curve is steeper, and flow becomes lift
Change (or SEA LEVEL VARIATION) is less sensitive, is fully able to be suitble to the conveying of activated sludge.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the utility model.
Fig. 2 is efficient exteenal reflux submersible sewage pump structural schematic diagram.
Fig. 3 is the sectional view of the utility model.
Fig. 4 is the left view of the utility model.
Fig. 5 is the side structure schematic diagram of double shrouded wheel.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
As shown, in the utility model, impeller 1 and the motor shaft 6 of submersible motor 2 using taper fit and are equipped with impeller
Nut 4 is fixed；The impeller 1 includes two blade 1-1 and front shroud 1-2, the front end of the blade 1-1, front shroud 1-2
Front end it is identical as the interior loop-shaped of pedestal 5, and form impeller clearance 3, the impeller 1 is using band part front shroud 1-2's
The blade 1-1 of the wide blade impeller of double helix, the import axial direction part of the impeller 1 is open type blade, and institute is stretched out in the front end of blade 1-1
Except the front shroud 1-2 stated.
Impeller 1 and the cooperation of motor shaft 6 use taper fit so that dismounting impeller is convenient.
Using the double helix blade impeller of band part front shroud 1-2, the casting of double shrouded wheel 6, the leaf of double shrouded wheel 6 can be pressed
Piece 6-1 does not stretch out in front shroud 6-2 outside front shroud 6-2, and then vehicle removes inducer front shroud 6-2（Technique cover board）, from
And reduce casting and difficulty of processing.The open type blade of import axial direction part is beneficial to improve the blocking of blade 1-1 runners, improves
Winding is generated in the turn fractions and blade 1-1 inlet sides of flowing.Using this wide blade impeller structure, can both solve simultaneously
The problem of instability of flow and blade passage block is compared with flow channel type pump and improves unit efficiency, alleviates impeller weight
Amount.
Claims (1)
1. a kind of impeller of efficient exteenal reflux submersible sewage pump, including pedestal, it is characterised in that the motor shaft (5) of impeller and submersible motor
Using taper fit and it is equipped with impeller nut and fixes；The impeller includes two blades and front shroud, before the blade
End, the front end of front shroud are identical as the interior loop-shaped of the pedestal, and form impeller clearance, and the impeller uses band part
The blade of the wide blade impeller of double helix of front shroud, the import axial direction part of the impeller is open type blade, and the front end of blade is stretched out
Except the front shroud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721617990.9U CN207814033U (en) | 2017-11-28 | 2017-11-28 | A kind of impeller of efficient exteenal reflux submersible sewage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721617990.9U CN207814033U (en) | 2017-11-28 | 2017-11-28 | A kind of impeller of efficient exteenal reflux submersible sewage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207814033U true CN207814033U (en) | 2018-09-04 |
Family
ID=63335118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721617990.9U Active CN207814033U (en) | 2017-11-28 | 2017-11-28 | A kind of impeller of efficient exteenal reflux submersible sewage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207814033U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377419A (en) * | 2020-11-13 | 2021-02-19 | 兰州理工大学 | Spiral centrifugal pump with combined runner |
-
2017
- 2017-11-28 CN CN201721617990.9U patent/CN207814033U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377419A (en) * | 2020-11-13 | 2021-02-19 | 兰州理工大学 | Spiral centrifugal pump with combined runner |
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