CN1837625A - Vortex extension type double-blade sewage pump - Google Patents
Vortex extension type double-blade sewage pump Download PDFInfo
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- CN1837625A CN1837625A CN 200610039756 CN200610039756A CN1837625A CN 1837625 A CN1837625 A CN 1837625A CN 200610039756 CN200610039756 CN 200610039756 CN 200610039756 A CN200610039756 A CN 200610039756A CN 1837625 A CN1837625 A CN 1837625A
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- impeller
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Abstract
The invention relates to a whorl lead dual-blade sewage pump, which is characterized in special blade wheel. Said blade wheel is characterized in that: there are two blade wheels; the center hub at the channel inlet is smaller half of general blade wheel hub; it is the semi-open blade wheel; the front and back cover plates are extended to the inlet direction; the flown line of back cover plate has larger 90-150degrees leading than the inlet of general blade wheel, while the back cover plate is larger 30-60degresss; the wrap angle of blade is larger than 300degrees. The invention can prevent coiling, with high efficiency and stable operation, when transmitting sewage.
Description
Technical field
The present invention relates to a kind of fluid machinery that is used for improving fluid pressure, especially a kind of blade type sewage pump of carrying sewage refers in particular to vortex extension type double-blade sewage pump.
Background technique
At present, known blade type sewage pump structure has: flow channel type (single channel, double flow channel), rotary flow type, spiral is centrifugal and some widen runner and the sewage pump that forms on the clear water centrifugal pump basis.These sewage pumps all have the ability of certain conveying sewage, but also come with some shortcomings.Though have passing capacity and higher running efficiency preferably as flow channel type, spiral centrifugal sewage pump, the bad shortcoming of smoothness of operation is arranged, its noise and vibration are relatively large; Rotary flow type sewage pump passing capacity is strong, and operational efficiency is but very low; Though it is higher relatively to widen the sewage pump operational efficiency that runner forms by general clean waterpump, it is poorer than the sewage pump of other structure by performance.In a word, high operational efficiency, good performance, the good smoothness of operation passed through are difficult to obtain unified in existing sewage pump.
Summary of the invention
Be difficult to both have high operational efficiency in order to overcome existing sewage pump, the good performance of passing through, the shortcoming that has good running stability again, the invention provides a kind of vortex extension type double-blade sewage pump, this type sewage pump had both had high operational efficiency, the good performance of passing through, and had good running stability again.
The present invention realizes that the technological scheme of above-mentioned purpose is:
This type sewage pump adopts the impeller that remarkable difference is arranged with other sewage pump, and it is characterized in that: impeller is two blades, about the general impeller hub of runner inlet center hub is half as large; Impeller is a half-opened impeller; The forward and backward cover plate streamline of blade all protracts to the inlet side direction, about 90 °-150 ° of the angle that the back shroud streamline extends forward than general impeller inlet, and the front shroud streamline has extended about 30 °-60 ° forward than the import of general impeller; And subtended angle of blade is greater than 300 °.
The invention has the beneficial effects as follows and adopt few number of blade, blade to protract, reduce the passing capacity that method such as impeller hub improves impeller.The blade suction port center pressure that can make impeller that protracts improves, because the raising of center pressure, solid material can be to border movement, thereby makes it unlikely winding the by impeller smoothly.
Compare with helico-centrifugal pump, the present invention has some similarity, and for example its blade all protracts, and mode is different but both blades protract.Helico-centrifugal pump is to extend before the centrifugal blade screw, and ductility is big, and blade front shroud streamline extends many forward than the back shroud streamline; Vortex extension type double-blade sewage pump impeller blade degree of protracting is big not as helico-centrifugal pump, and blade back shroud streamline extends many forward than the front shroud streamline.The sewage of two kinds of pumps is all better by performance, but the vortex extension type double-blade sewage pump operation is more stable, the bigger problem of vibrating noise that no helico-centrifugal pump has when the off-design operating point.Simultaneously owing to be double blade structure, stressed harmony is more far better than single channel sewage pump, so the shaft strength state also is improved, and has improved the service life of unit.
The present invention is because therefore the impeller of particular design has higher running efficiency, and its operational efficiency can be near the efficient of general clean waterpump, and the sewage pump height than adopting general structural type impeller helps energy saving.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the axial plane figure of impeller of the present invention.
Fig. 3 is the transversal figure of impeller blade of the present invention.
Among Fig. 1: 1. 6. 7. bearing supports of the pump housing 2. front shrouds, 3. impeller 4. mechanical seals, 5. pump covers, 8. bearings, 9. coupling, 10. motors
Among Fig. 2: 11. general inlet edge of impeller blade 12. inlet edge of impeller blade 13. general impeller hub 14. impeller hubs of the present invention of the present invention
Among Fig. 3: 17. subtended angle of blades of 16. inlet edge of impeller blade of the present invention positions, 15. general inlet edge of impeller blade positions
Embodiment
The present invention is further described below in conjunction with accompanying drawing.
As shown in Figure 1, under the drive of motor (10), impeller (3) high speed rotating in the import formation low pressure of the pump housing (1), thereby sucks sewage.Sewage obtains energy under the further effect of impeller, discharge from the outlet of the pump housing.The effect of mechanical seal (4) is the liquid of sealed high pressure, makes it not leak from the between centers gap.
What obvious difference is arranged with general sewage pump is its impeller, and the axial plane figure of impeller and the transversal figure of blade are respectively as shown in Figures 2 and 3.Impeller is two blades, blade extends more to the inlet side direction, the angle of its back shroud streamline cornerite has been extended about 90 °-150 ° forward than the import of general impeller, and the angle of front shroud streamline cornerite has been extended about 30 °-60 ° forward than the import of general impeller.Though existing general impeller inlet limit not have clear and definite consistent value, is at dotted line position shown in Figure 2 basically, by 3,4 contrast among Fig. 2 as can be seen, impeller channel of the present invention inlet center hub than general impeller hub half as large about.It can also be seen that from Fig. 3 impeller blade cornerite of the present invention is greater than 300 °.
The vertical major axis sewage pump of LWZ120-6 type that adopts the impeller of the present invention's description and design, make, on test installation of pump, test with B class precision, its pump efficiency is 74.3%, and this just shows the general sewage pump high about 8% of this type sewage pump efficient than same model.The long pond of precipitation that is installed on the waterworks is arranged driving and is gone up operation, and runnability shows, this type pump has that passing capacity is strong, the characteristics of good operation stability.
Claims (1)
1. vortex extension type double-blade sewage pump, feature is that its impeller is two blades, about the general impeller hub of runner inlet center hub is half as large; Impeller is a half-opened impeller; The forward and backward cover plate streamline of blade all protracts to the inlet side direction, about 90 °-150 ° of the angle that the back shroud streamline extends forward than the import of general impeller, and the front shroud streamline extends about 30 °-60 ° forward than the import of general impeller, subtended angle of blade is greater than 300 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610039756 CN1837625A (en) | 2006-04-21 | 2006-04-21 | Vortex extension type double-blade sewage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610039756 CN1837625A (en) | 2006-04-21 | 2006-04-21 | Vortex extension type double-blade sewage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1837625A true CN1837625A (en) | 2006-09-27 |
Family
ID=37015109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610039756 Pending CN1837625A (en) | 2006-04-21 | 2006-04-21 | Vortex extension type double-blade sewage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1837625A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696982A (en) * | 2013-12-06 | 2014-04-02 | 江苏大学 | Sewage axial-flow pump impeller structure capable of automatically cutting fibers |
| CN104613002A (en) * | 2013-11-04 | 2015-05-13 | 江苏大学 | Vortex forward-extended double blade impeller sewage pump |
-
2006
- 2006-04-21 CN CN 200610039756 patent/CN1837625A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613002A (en) * | 2013-11-04 | 2015-05-13 | 江苏大学 | Vortex forward-extended double blade impeller sewage pump |
| CN103696982A (en) * | 2013-12-06 | 2014-04-02 | 江苏大学 | Sewage axial-flow pump impeller structure capable of automatically cutting fibers |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20060927 |