CN2031466U - Centrifugal impeller - Google Patents
Centrifugal impeller Download PDFInfo
- Publication number
- CN2031466U CN2031466U CN 88210323 CN88210323U CN2031466U CN 2031466 U CN2031466 U CN 2031466U CN 88210323 CN88210323 CN 88210323 CN 88210323 U CN88210323 U CN 88210323U CN 2031466 U CN2031466 U CN 2031466U
- Authority
- CN
- China
- Prior art keywords
- attached
- blade
- helps
- cover plate
- back shroud
- 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.)
- Pending
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a centrifugal impeller, which is used for the rotor of the centrifugal pump, and the centrifugal pump is especially suitable for the centrifugal pump of the corrosive liquid. The back of the rear end plate of the impeller is connected with an accessory vane which is connected with an accessory cover plate; the centrifugal impeller is arranged on the centrifugal pump; the accessory vane which is arranged near the pump shaft and the bearing can generate the negative pressure, and accordingly, the external leakage of the liquid can be reduced.
Description
Receded disk impeller is the rotor that is exclusively used in centrifugal pump, is specially adapted to the centrifugal pump of corrosive liquids, and the attached blade that helps is equipped with at the back shroud of impeller back side, and the centrifugal pump that this impeller is formed can reduce liquid from the leakage between axle and the housing bearing.
All by wheel hub hub Zhou Lianyou back shroud, the blade side is connected and forms with the one side of cover plate impeller.Impeller is loaded in the housing chamber, and the back shroud back side and cavity wall are adjacent, and back shroud and cavity wall relatively rotate, and both doors are gapped, and then liquid passes through the gap between axle and the bearing, to external leakage again through this gap.Prevent that liquid is to external leakage.Then adopt various shaft sealings, as seal ring, packing seal etc., some sealing configuration is a more complicated, and Sealing is more fragile.
For the leaked liquid that reduces the pump shaft place leaks, simplify axle sealing structure, and designed receded disk impeller of the present utility model.
Receded disk impeller is made up of wheel hub, cover plate, blade, wheel hub hub Zhou Lianyou back shroud, and the blade side is connected with the one side of cover plate, and the structural feature of this receded disk impeller is: the another side of back shroud (back side) is connected with the attached blade side that helps.Attached another side of blade that helps can be connected with the attached cover plate that helps, and the attached cover plate middle part of helping has suction inlet, attached help blade preferably and blade (also claiming primary blades) with circumferential bending.The receded disk impeller of Gou Chenging is assembled into centrifugal pump like this, and attached blade side or the attached cover plate back side that helps of helping is adjacent with the pump case inner chamber, preferably attached blade side or the attached cover plate back side and the approximate coplane of pump case internal chamber wall of helping of helping.During impeller operation, primary blades sucks liquid from suction inlet, boost pressure is discharged to outlet again, the attached blade that helps also takes out attached blade side or the attached wheel hub of flowing through between the cover plate back side and the housing internal chamber wall, axle, near the liquid of bearing of helping of helping to outlet, and produce negative pressure near helping blade suction inlet and wheel hub, axle, bearing attached, force the wheel hub of flowing through, axle, near the attached blade suction inlet that helps of flow direction of bearing, not to external leakage.
The back shroud of ining succession in the wheel hub hub week of this receded disk impeller, wheel hub, cover plate coaxial line, the blade side is connected with the one side of cover plate, and front shroud is not essential.The multi-disc blade is along circumferentially evenly distributing, and generally to the direction bending of rotation, the end that blade is positioned at the impeller middle part can be connected with wheel hub blade, also can directly not be connected with wheel hub.General wheel hub, blade, cover plate are made one.The one side of back shroud with blade wide to side fuse, and the another side of back shroud is connected with the attached blade that helps, the attached side of blade that helps is connected with back shroud.The attached blade that helps circumferentially evenly distributes along the back shroud face, and the attached blade that helps can be prismatic blade, also can be curved vane, preferably with attached the help blade of primary blades with circumferential skewing.The attached same primary blades of blade, wheel hub, the cover plate of helping can be made into one, as casting, be swaged into one, also can help the blade welding or be bonded in the back shroud face attached.The attached width of blade that helps is much narrower than primary blades, and the one end can be positioned at back shroud face excircle place, and the other end can also can be positioned at outside wheel hub hub week as for hub.Attached another side of blade that helps can be connected with the attached cover plate that helps, and the attached blade that helps is back shroud and attached helping between the cover plate, attached help blade along wide to two side ends be connected with the back shroud back side, the attached cover plate that helps respectively.Back shroud is parallel with the attached cover plate that helps, and the attached cover plate middle part of helping has suction inlet, and the radius of suction inlet is preferably greater than the hub spindle pore radius, and attached to help the cover plate external diameter to be similar to identical or be slightly less than the back shroud external diameter with back shroud.Receded disk impeller is loaded on pump shaft by the hub spindle borehole jack and is loaded on the pump case inner chamber.The back shroud back side is no longer adjacent with internal chamber wall, but attached blade or the attached cover plate that helps of helping is adjacent with internal chamber wall, attached help the blade side or attached help the cover plate back side preferably with the approximate coplane of internal chamber wall.When receded disk impeller work is rotated, primary blades sucks working liquid body from suction inlet, supercharging is discharged into outlet, and the attached blade that helps is axle, bearing, near the wheel hub liquid is taken out to the wheel outer rim, the pump discharge place, a spot of liquid helps under the blade effect attached, help blade or attached helping between cover plate and the internal chamber wall attached, attached blade passage and the attached suction inlet that helps blade of helping, row's mouthful circulation, the attached blade that helps flogs a dead horse, but the attached blade that helps is at axle, produce negative pressure near the bearing, force liquid not to external leakage, axle sealing structure just can be simplified greatly, as long as simple shaft sealing is arranged, utilize axle, near the bearing negative pressure just can significantly reduce the leakage quantity that leaks.
Accompanying drawing has been represented a kind of structure principal section figure of receded disk impeller.Below in conjunction with this receded disk impeller of description of drawings.Wheel hub (1) hub Zhou Lianyou taper back shroud (2) is connected with the back shroud bi-side respectively with the primary blades (3) of circumferential skewing, the attached blade (4) that helps.Primary blades is wide simultaneously to fuse to a side and back shroud, primary blades wide to another side be connected with front shroud (5), front shroud middle part is cylindric suction inlet (6).Primary blades one end warp-wise is positioned at the suction inlet edge of front shroud, and the other end warp-wise is positioned at cover plate face excircle.Attached help blade wide to a side and back shroud face fuse, and attached help blade wide to another side be connected with the attached cover plate (7) that helps of taper, the attached cover plate middle part of helping is for narrow cylindric, the cylinder radius is slightly larger than the external diameter of wheel hub, form the attached suction inlet (8) that helps of annular, attached blade one end that helps radially is positioned at cover plate face periphery circle, and the other end is positioned at the wheel hub periphery.Front shroud, back shroud, the attached cover plate exradius that helps are approximate identical.The wheel hub middle part has axis hole.Axis hole by wheel hub is loaded on centrifugal pump with receded disk impeller.
Claims (3)
1, receded disk impeller is made up of wheel hub, cover plate, blade, wheel hub hub Zhou Lianyou back shroud, and the blade side is connected with the one side of cover plate, it is characterized in that the another side of back shroud is connected with attached blade one side that helps.
2, as the said receded disk impeller of claim 1, it is characterized in that: attached another side of blade that helps is connected with the attached cover plate that helps, and the attached cover plate middle part that helps has suction inlet.
3,, it is characterized in that attached blade and the same circumferential skewing of blade of helping as claim 1 or 2 said receded disk impellers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88210323 CN2031466U (en) | 1988-03-19 | 1988-03-19 | Centrifugal impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88210323 CN2031466U (en) | 1988-03-19 | 1988-03-19 | Centrifugal impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2031466U true CN2031466U (en) | 1989-01-25 |
Family
ID=4843825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88210323 Pending CN2031466U (en) | 1988-03-19 | 1988-03-19 | Centrifugal impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2031466U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050881C (en) * | 1992-12-29 | 2000-03-29 | 沃尔特克斯澳大利亚有限公司 | Pump impeller and centrifugal slurry pump incorporating same |
| CN109538523A (en) * | 2019-01-10 | 2019-03-29 | 浙江理工大学 | A kind of current stabilization centrifugal impeller reducing circumfluence |
-
1988
- 1988-03-19 CN CN 88210323 patent/CN2031466U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050881C (en) * | 1992-12-29 | 2000-03-29 | 沃尔特克斯澳大利亚有限公司 | Pump impeller and centrifugal slurry pump incorporating same |
| CN109538523A (en) * | 2019-01-10 | 2019-03-29 | 浙江理工大学 | A kind of current stabilization centrifugal impeller reducing circumfluence |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned | ||
| WD01 | Invention patent application deemed withdrawn after publication |