CN101865154A - Lower support structure of long shaft pump - Google Patents
Lower support structure of long shaft pump Download PDFInfo
- Publication number
- CN101865154A CN101865154A CN 201010195426 CN201010195426A CN101865154A CN 101865154 A CN101865154 A CN 101865154A CN 201010195426 CN201010195426 CN 201010195426 CN 201010195426 A CN201010195426 A CN 201010195426A CN 101865154 A CN101865154 A CN 101865154A
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- China
- Prior art keywords
- impeller
- pump
- bearing
- long shaft
- support structure
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- 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.)
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Abstract
The invention 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 of the long shaft pump comprises a pump body and an impeller arranged in the pump body, wherein a sliding bearing is arranged above an impeller shaft; the lower end of the impeller shaft is arranged on a bearing seat through a lower bearing, and the bearing seat is connected with the pump body through a section of barrel body; and a suction port which runs through inside and outside is arranged on the barrel wall of the barrel body. Compared with the traditional structure, the lower bearing device is additionally arranged, which makes the upper part and the lower part of the impeller obtain positioning support, ensures that the radial runout of the impeller is smaller in the running process and simultaneously reduces the axial force of the impeller in the running process, the abrasion of the sliding bearing and a shaft sleeve and the maintenance cost; meanwhile, the suction port setting requirement is solved by arranging the suction port on the barrel wall of the barrel body; the vortex phenomenon can be prevented by arranging a separating tongue so as to improve the anti-blocking performance of an inlet; and the inlet is in a negative pressure state in the running process of the pump, therefore, the impact to a lower bearing sealing device from liquid stream is reduced, and the sealing performance of a bearing body is improved.
Description
Technical field
The present invention 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 by this invention 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 invention 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 present invention compares 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 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 invention;
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 (1) 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 (1) outer wall is surrounded by filter screen (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010195426 CN101865154A (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 |
|---|---|---|---|
| CN201010117916.7 | 2010-03-05 | ||
| CN201010117916 | 2010-03-05 | ||
| CN 201010195426 CN101865154A (en) | 2010-03-05 | 2010-05-24 | Lower support structure of long shaft pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101865154A true CN101865154A (en) | 2010-10-20 |
Family
ID=42957019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010195426 Pending CN101865154A (en) | 2010-03-05 | 2010-05-24 | Lower support structure of long shaft pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101865154A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2230838Y (en) * | 1995-04-25 | 1996-07-10 | 曾明海 | Moveable filtering net of water pump bottom valve |
| CN1186533C (en) * | 2002-09-29 | 2005-01-26 | 株洲市自强油气储运设备制造有限公司 | Multistage high-lift submerged oil pump |
| CN201090513Y (en) * | 2007-09-29 | 2008-07-23 | 上海凯士比泵有限公司 | Stream intake path without swirl of water pump |
| CN201836090U (en) * | 2010-03-05 | 2011-05-18 | 江苏长凯机械设备有限公司 | Lower support structure of long-shaft pump |
-
2010
- 2010-05-24 CN CN 201010195426 patent/CN101865154A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2230838Y (en) * | 1995-04-25 | 1996-07-10 | 曾明海 | Moveable filtering net of water pump bottom valve |
| CN1186533C (en) * | 2002-09-29 | 2005-01-26 | 株洲市自强油气储运设备制造有限公司 | Multistage high-lift submerged oil pump |
| CN201090513Y (en) * | 2007-09-29 | 2008-07-23 | 上海凯士比泵有限公司 | Stream intake path without swirl of water pump |
| CN201836090U (en) * | 2010-03-05 | 2011-05-18 | 江苏长凯机械设备有限公司 | Lower support structure of long-shaft pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20101020 |