CN201170213Y - Vertical type self-suction centrifugal pump with liquid leakage drain pipe - Google Patents
Vertical type self-suction centrifugal pump with liquid leakage drain pipe Download PDFInfo
- Publication number
- CN201170213Y CN201170213Y CNU2007200584906U CN200720058490U CN201170213Y CN 201170213 Y CN201170213 Y CN 201170213Y CN U2007200584906 U CNU2007200584906 U CN U2007200584906U CN 200720058490 U CN200720058490 U CN 200720058490U CN 201170213 Y CN201170213 Y CN 201170213Y
- Authority
- CN
- China
- Prior art keywords
- pump
- centrifugal pump
- discharge opeing
- priming centrifugal
- vertical self
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a vertical self-priming centrifugal pump provided with a weeping drain pipe, comprising a pump, a pump cover, a guide vane arranged between the pump and the pump cover, wherein the guide vane is provided with an impeller; the pump cover is provided with a mounting cavity of a bearing of a pump shaft, and a drain connection which is communicated with the mounting cavity of the bearing; and the drain connection is provided with a drain duct which is communicated with the outside of the pump. When the mechanical seal of the pump leaks, weeping is discharged out of the pump through the inner hole of the drain duct. The vertical self-priming centrifugal pump can effectively prevent the weeping from accumulating in the mounting cavity of the bearing parts on the pump cover, avoid the failure of bearing damage, and improve the service life of the whole pump.
Description
Technical field
The utility model relates to self-priming centrifugal pump, is a kind of vertical self-priming centrifugal pump with the leakage escape pipe specifically.
Background technique
Marine vertical type self-suction centrifugal pump is the product of just developing and putting goods on the market in recent years in shipbuilding industry.The marine vertical type self-suction centrifugal pump of domestic marine pump manufacturer, its structure does not have the leakage escape pipe.Because the pump housing is a shape that is drum, for the proportioning pump shape and rational liquid storage must be arranged and the gas-liquid separation volume, the exocoel of pump cover must be designed to be similar to the shape of funnel, constitutes a semi-enclosed cavity with pump shaft.Because the center of gravity of pump should not design too highly, the lower bearing of pump can not be long from the axial distance (i.e. Zhou cantilever) of impeller, so the Lower Half of bearing support have to extend to the exocoel of funnel shape pump cover.This structure exists following defective: pump is in running when if mechanical seal leakage takes place, leakage fluid accumulates in the exocoel of pump cover gradually, the leakage fluid liquid level is to a certain degree and when being higher than lower bearing, leakage fluid can enter bearing bore along the gap between each fitting surface, soak bearing and corrosion bearing, very easily cause the fault of damage of bearings.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of leakage fluid that prevents to accumulate in the exocoel of pump cover and enter bearing bore, avoids taking place the vertical self-priming centrifugal pump of band leakage escape pipe of the fault of damage of bearings.
Goal of the invention of the present utility model is to realize like this, a kind of vertical self-priming centrifugal pump with the leakage escape pipe, comprise the pump housing, pump cover and be located at the pump housing and pump cover between diffuser, impeller is installed in the diffuser, pump cover is provided with the installation cavity of the bearing body part of pump shaft, it is characterized in that: have the discharge opeing interface that is communicated with the installation cavity of bearing body part on the described pump cover, the discharge opeing interface is provided with draining pipe.
Described draining pipe is communicated with the external world of the pump housing.
The described pump housing is provided with the through hole that can be passed by draining pipe, and through hole is provided with the Sealing that matches with draining pipe.
Through hole coaxial arrangement on the described discharge opeing interface and the pump housing.
Described discharge opeing interface is provided with the seal ring that matches with draining pipe.
Described discharge opeing interface is located at the installation cavity sidewall lower edge of the bearing body part of pump cover.
Described discharge opeing interface and draining pipe are for being threaded.
The utility model is by improving existing self-priming centrifugal pump, have the discharge opeing interface that is communicated with the bearing body part installation cavity on the pump cover, the discharge opeing interface is provided with draining pipe, on the pump housing, be provided with the through hole that can pass by draining pipe, draining pipe is connected with the discharge opeing interface and passes pump housing through hole and leads to outside the pump, and the sealing of draining pipe and zone of high pressure realizes by pad, rubber seal and soft packing.When pump generation mechanical seal leakage, leakage fluid will prevent that leakage fluid from accumulating in the bearing body part installation cavity on the pump cover by outside the draining pipe endoporus excavationg pump, avoids taking place the fault of damage of bearings, improves the working life of whole pump.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model most preferred embodiment.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing.
According to shown in Figure 1, the vertical self-priming centrifugal pump of band leakage escape pipe of the present utility model comprises the pump housing 1, pump cover 3, is located at the diffuser 8 between the pump housing 1 and the pump cover 3 and is installed in impeller 2 in the diffuser 8.Pump cover 3 is provided with the installation cavity 4 of the bearing body part 9 of pump shaft.Have the discharge opeing interface 5 that is communicated with the installation cavity 4 of bearing body part 9 on the pump cover 3, discharge opeing interface 5 is provided with draining pipe 6.Draining pipe 6 is communicated with the external world of the pump housing 1, and the pump housing 1 is provided with the through hole that can be passed by draining pipe 6.Through hole is provided with the Sealing 7 that matches with draining pipe 6, also be provided with the seal ring 10 that matches with draining pipe 6 on the discharge opeing interface 5, sealing part 7 can be pad or rubber seal or soft packing with seal ring 10, by part, realize that the pump housing 1 inner high voltage district and pump reach the sealing between the installation cavity 4 outward at draining pipe 6.Through hole on the discharge opeing interface 5 and the pump housing 1 can pass through coaxial arrangement, saves the material of draining pipe 6.Discharge opeing interface 5 is located at the sidewall lower edge of installation cavity 4 of the bearing body part 9 of pump cover 3, and discharge opeing interface 5 and draining pipe 6 are for being threaded.Drain catheter 6 is connected with discharge opeing interface 5 and the through hole that passes the pump housing 1 leads to outside the pump.This drain catheter 6 also can be communicated with the pump housing 1 bottom simultaneously, and leakage fluid is discharged to outside the pump by the corresponding outage in the pump housing 1 bottom.When pump generation mechanical seal leakage, leakage fluid prevents that by outside draining pipe 6 excavationg pumps leakage fluid from accumulating in the installation cavity 4 of the bearing body part 9 on the pump cover 3, avoids taking place the fault of damage of bearings, improves the working life of whole pump.Because the direction design of the drainage mouth of pipe is in the outside of pump, convenient monitoring to the mechanical seal state is convenient to find early fault and eliminating in time, prevents that leakage fluid from gathering the corrosion that increases the weight of pump cover 3, these major parts of pump shaft.
Claims (7)
1. vertical self-priming centrifugal pump with the leakage escape pipe, comprise the pump housing (1), pump cover (3) and be located at the pump housing (1) and pump cover (3) between diffuser (8), impeller (2) is installed in the diffuser (8), pump cover (3) is provided with the installation cavity (4) of the bearing body part (9) of pump shaft, it is characterized in that: have the discharge opeing interface (5) that is communicated with the installation cavity (4) of bearing body part (9) on the described pump cover (3), discharge opeing interface (5) is provided with draining pipe (6).
2. the vertical self-priming centrifugal pump of band leakage escape pipe according to claim 1 is characterized in that: described draining pipe (6) is communicated with the external world of the pump housing (1).
3. the vertical self-priming centrifugal pump of band leakage escape pipe according to claim 1 is characterized in that: the described pump housing (1) is provided with the through hole that can be passed by draining pipe (6), and through hole is provided with the Sealing (7) that matches with draining pipe (6).
4. the vertical self-priming centrifugal pump of band leakage escape pipe according to claim 1 is characterized in that: the through hole coaxial arrangement on the described discharge opeing interface (5) and the pump housing (1).
5. the vertical self-priming centrifugal pump of band leakage escape pipe according to claim 1 is characterized in that: described discharge opeing interface (5) is provided with the seal ring (10) that matches with draining pipe (6).
6. the vertical self-priming centrifugal pump of band leakage escape pipe according to claim 1 is characterized in that: described discharge opeing interface (5) is located at installation cavity (4) the sidewall lower edge of the bearing body part (9) of pump cover (3).
7. the vertical self-priming centrifugal pump of band leakage escape pipe according to claim 1 is characterized in that: described discharge opeing interface (5) and draining pipe (6) are for being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200584906U CN201170213Y (en) | 2007-10-22 | 2007-10-22 | Vertical type self-suction centrifugal pump with liquid leakage drain pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200584906U CN201170213Y (en) | 2007-10-22 | 2007-10-22 | Vertical type self-suction centrifugal pump with liquid leakage drain pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201170213Y true CN201170213Y (en) | 2008-12-24 |
Family
ID=40209266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200584906U Expired - Lifetime CN201170213Y (en) | 2007-10-22 | 2007-10-22 | Vertical type self-suction centrifugal pump with liquid leakage drain pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201170213Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102686885A (en) * | 2009-12-28 | 2012-09-19 | 株式会社荏原制作所 | Impeller for pump, and submersible pump provided with same |
| CN102840416A (en) * | 2011-06-20 | 2012-12-26 | 江苏美诚生物科技有限公司 | Leakage protection device |
-
2007
- 2007-10-22 CN CNU2007200584906U patent/CN201170213Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102686885A (en) * | 2009-12-28 | 2012-09-19 | 株式会社荏原制作所 | Impeller for pump, and submersible pump provided with same |
| CN102686885B (en) * | 2009-12-28 | 2015-09-02 | 株式会社荏原制作所 | Impeller of pump and there is the submersible pump of this impeller of pump |
| CN102840416A (en) * | 2011-06-20 | 2012-12-26 | 江苏美诚生物科技有限公司 | Leakage protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG SHUNDA MARINE ENGINEERING CO., LTD. Free format text: FORMER NAME: FOSHAN SHUNDE SHUNDA SHIP ENGINEERING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 528322 Guangdong Province, Foshan city Shunde District Leliu Town West Road No. 9 Shunda Ship Engineering Co. Ltd. Patentee after: GUANGDONG SHUNDA MARINE ENGINEERING CO., LTD. Address before: 528322 Guangdong Province, Foshan city Shunde District Leliu Town West Road No. 9 Shunda Ship Engineering Co. Ltd. Patentee before: Foshan Shunde Shunda Ship Engineering Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20081224 |
|
| CX01 | Expiry of patent term |