CN201836090U - Lower support structure of long-shaft pump - Google Patents
Lower support structure of long-shaft pump Download PDFInfo
- Publication number
- CN201836090U CN201836090U CN2010202141660U CN201020214166U CN201836090U CN 201836090 U CN201836090 U CN 201836090U CN 2010202141660 U CN2010202141660 U CN 2010202141660U CN 201020214166 U CN201020214166 U CN 201020214166U CN 201836090 U CN201836090 U CN 201836090U
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- bearing
- impeller
- pump
- support structure
- shaft
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- Expired - Fee Related
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Abstract
The utility model relates to a component structure of a long-shaft pump, in particular to a lower support structure of a long-shaft pump. The lower support structure comprises a pump body and an impeller mounted in the pump body. A sliding bearing is arranged above an impeller shaft, the lower end of the impeller shaft is mounted on a bearing seat through a lower bearing, the bearing seat is connected with the pump body through a section of a cylinder, and a through suction port is arranged in the wall of the cylinder. Compared with the conventional structure, the lower support structure is provided with the additional lower bearing device, so that the upper side and the lower side of the impeller can be positioned and supported, the radial runout of the impeller during running is slighter, axial force of the impeller during running is reduced simultaneously, abrasion of the sliding bearing and a shaft sleeve is reduced, and maintenance cost is reduced. Simultaneously, since the suction port is arranged in the wall of the cylinder, requirements to the suction port are met; cyclone can be avoided by the aid of the arrangement of a spacer, so that anti-blocking performance of an inlet is improved. Furthermore, as the inlet of the pump is in negative pressure state during running, impact of liquid flow to a sealing device of the lower bearing is reduced, and sealing performance of the bearing is improved.
Description
Technical field
The utility model relates to a kind of modular construction of major axis pump, specifically is a kind of lower support structure of long shaft pump.
Background technique
The major axis pump is generally used for the occasion that the degree of depth is dark under the liquid, flow is big, lift is high, is widely used in industries such as electric power, petrochemical industry iron and steel.There is following problem in the tradition major axis pump operation: under big liquid during the degree of depth, the coaxality of major axis pump operation can not get guaranteeing, dynamic balancing is poor, because the impeller below is a suction inlet, therefore only above impeller, be provided with sliding bearing and axle sleeve usually and cooperate supporting, serious wear, matching gap is poor because of the stability that wearing and tearing increase the back pump operation, sliding bearing and axle sleeve must often be changed, the cost that has improved operation and safeguarded.
Summary of the invention
Technical problem to be solved in the utility model is a kind of operation stability height to be provided, can to improve the parts lower support structure of long shaft pump in working life.
Lower support structure of long shaft pump of the present utility model includes the pump housing and is installed in the interior impeller of the pump housing, and the impeller shaft top is provided with sliding bearing; The lower end of impeller shaft is installed on the bearing support by a lower bearing, and this bearing support is connected with the pump housing by one section cylindrical shell; Have the inside and outside suction inlet that connects on the barrel of described cylindrical shell.
The inwall of described cylindrical shell also is provided with the cut water of at least one projection.
Described cylinder body outer wall is surrounded by filter screen.
The utility model is compared with conventional construction, has set up lower bearing equipment, makes impeller all obtain positioning support up and down, guarantees that its when operation circular runout is less, reduces the operating axial force of impeller simultaneously, reduces the wearing and tearing of sliding bearing and axle sleeve, reduces the cost of overhaul; Simultaneously by on the barrel of cylindrical shell, suction inlet being set, solved the requirement that is provided with of suction inlet, and the setting of cut water, can avoid the eddy flow phenomenon that becomes a mandarin and produce owing to the side, to improve the import block resistance, import is negative pressure state in the pump operation, has reduced the impact of liquid stream to the lower bearing seal arrangement, improves the sealability of bearing support.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is 1 A cross section structure schematic representation.
Embodiment
As shown in the figure, this lower support structure of long shaft pump includes the pump housing 1 and is installed in the interior impeller 2 of the pump housing, and the impeller shaft top is provided with sliding bearing 3; The lower end of impeller shaft is installed on the bearing support 5 by a lower bearing 4, and this bearing support 5 is connected with the pump housing 1 by one section cylindrical shell 6; Have the inside and outside suction inlet 7 that connects on the barrel of cylindrical shell 6; The inwall of cylindrical shell is provided with the cut water 8 of several projections; Cylinder body outer wall is surrounded by filter screen 9.
Claims (3)
1. a lower support structure of long shaft pump includes the pump housing (1) and is installed in the interior impeller (2) of the pump housing, and the impeller shaft top is provided with sliding bearing (3); It is characterized in that: the lower end of impeller shaft is installed on the bearing support (5) by a lower bearing (4), and this bearing support is connected with the pump housing by one section cylindrical shell (6); Have the inside and outside suction inlet (7) that connects on the barrel of cylindrical shell.
2. lower support structure of long shaft pump according to claim 1 is characterized in that: the inwall of described cylindrical shell (6) also is provided with the cut water (8) of at least one projection.
3. lower support structure of long shaft pump according to claim 1 and 2 is characterized in that: described cylindrical shell (6) outer wall is surrounded by filter screen (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202141660U CN201836090U (en) | 2010-03-05 | 2010-05-24 | Lower support structure of long-shaft pump |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020123668.2 | 2010-03-05 | ||
| CN201020123668 | 2010-03-05 | ||
| CN2010202141660U CN201836090U (en) | 2010-03-05 | 2010-05-24 | Lower support structure of long-shaft pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201836090U true CN201836090U (en) | 2011-05-18 |
Family
ID=44006195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202141660U Expired - Fee Related CN201836090U (en) | 2010-03-05 | 2010-05-24 | Lower support structure of long-shaft pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201836090U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865154A (en) * | 2010-03-05 | 2010-10-20 | 江苏长凯机械设备有限公司 | Lower support structure of long shaft pump |
| CN107941562A (en) * | 2017-12-04 | 2018-04-20 | 李广素 | A kind of hydraulic engineering water quality silt content sampler |
-
2010
- 2010-05-24 CN CN2010202141660U patent/CN201836090U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865154A (en) * | 2010-03-05 | 2010-10-20 | 江苏长凯机械设备有限公司 | Lower support structure of long shaft pump |
| CN107941562A (en) * | 2017-12-04 | 2018-04-20 | 李广素 | A kind of hydraulic engineering water quality silt content sampler |
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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: 20110518 Termination date: 20180524 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |