CN2303116Y - Spiral sealing device of centrifugal pump - Google Patents
Spiral sealing device of centrifugal pump Download PDFInfo
- Publication number
- CN2303116Y CN2303116Y CN 97207539 CN97207539U CN2303116Y CN 2303116 Y CN2303116 Y CN 2303116Y CN 97207539 CN97207539 CN 97207539 CN 97207539 U CN97207539 U CN 97207539U CN 2303116 Y CN2303116 Y CN 2303116Y
- Authority
- CN
- China
- Prior art keywords
- sealing device
- pump
- cover
- centrifugal pump
- stopping seal
- 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 - Fee Related
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- Sealing Devices (AREA)
Abstract
The utility model relates to a spiral sealing device of a centrifugal pump, which comprises a spiral mechanism and stopping seal. The utility model is characterized in that an axial moving mechanism is arranged on the stopping seal. When the pump works, the axial moving mechanism is manipulated, and thus the sealing filler of the stopping seal can be slack to disengage from a moving sleeve, so that abrasion is reduced to extend the service time of the stopping seal; when the pump stops, the axial moving mechanism is moved in a reverse direction, and the sealing filler of the stopping seal wraps tightly the moving sleeve, so that the stopping seal is axially compressed and radially expanded, and accordingly, the liquid at the intervals of shaft holes can be prevented from leaking. The utility model has the advantages of long service life, simple structure, convenient operation, etc.
Description
The utility model relates to centrifugal pump seal arrangement, especially spiral sealing device.
A kind of spiral sealing device of centrifugal pump employing at present is made of screw mechanism and parking sealer usually.Screw mechanism places near pump chamber one end, and parking sealer is then away from pump chamber one end.Screw mechanism is made up of quiet cover and moving cover, quiet cover is fixed on the pump housing, and moving cover is fixed on the axle, rotates with axle, be processed with spiral grooves on moving cover or quiet cover a certain, it carries the direction of liquid opposite with the direction that liquid leaks in moving cover, quiet cover gap.When pump work, spiral oppositely carries amount of liquid to equate substantially with moving cover, quiet cover gap leakage liquid amount, so pump shaft envelope leakage rate is zero, thereby reaches sealing purpose.Parking sealer is made up of gland and stuffing box packing usually, and during parking, pressured lid compresses stuffing box packing and stops leak of liquid in the pump chamber, to realize sealing.This kind spiral sealing device, during owing to pump work, the parking sealer filler contacts with moving cover all the time and rubs, thereby serious wear, and the parking sealer life-span is low, and pump power consumption is big, and efficient is low.
The purpose of this utility model is to propose a kind of when pump work, and the parking sealer filler does not rub with moving cover, thereby reduces wear, and improves the parking sealer life-span, reduces the seal arrangement that pump power consumes.
For achieving the above object, the utility model by the following technical solutions:
This seal arrangement comprises screw mechanism and parking sealer.Screw mechanism is made up of moving cover (3) and quiet cover (2), be processed with spiral grooves on a certain of moving cover (3) or quiet cover (2), parking sealer comprises stuffing box packing (5) and gland (6), it is characterized in that, parking sealer also is provided with axial moving mechanism, and stuffing box packing (5) has adopted the rubber-like flexible material to make.When pump work, axial moving mechanism makes parking sealer filler (5) break away from the moving cover (3) that rotates with rotating shaft, thereby reduces friction; When pump quit work, axial moving mechanism made parking sealer filler (5) axial compression, because it has elasticity, thus radial dilatation, thus stem shaft interporal lacuna leak of liquid.
Compared with prior art, the utility model has the advantages that: because parking sealer is provided with axial moving mechanism, and the filler that has adopted the rubber-like flexible material to make, when pump work, the parking sealer filler does not contact with moving cover, do not produce friction, thereby improved greatly the parking sealer life-span, reduced pump power consumption simultaneously yet.
Fig. 1 is this seal arrangement schematic representation.
Below in conjunction with description of drawings embodiment of the present utility model.
Referring to Fig. 1, this seal arrangement comprises screw mechanism and parking sealer, and parking sealer is provided with axial moving mechanism.Screw mechanism is made up of moving cover (3) and quiet cover (2), moves on the outer garden cylinder that overlaps (3) and is processed with spiral grooves, and moving cover (3) is fixed in the rotating shaft (1), and rotates synchronously with rotating shaft (1), and quiet cover (2) is fixed on the pump housing (4).Parking sealer comprises rubber-like stuffing box packing (5) and gland (6), and gland (6) is screwed on the pump housing (4), compresses quiet cover (2), prevents its axial float.Axial moving mechanism comprises sealing plug (9), handle (8) and support (7), sealing plug (9) can be taper or garden cylindricality, the one end has groove (10), the other end endoporus is processed with packing groove (11), in packing groove (11), embeds stuffing box packing (5), sealing plug (9) is packed in the endoporus of gland (6), and its matching gap should guarantee that sealing plug (9) can move axially; Support (7) be fixed on that gland (6) is gone up or the pump housing (4) on; Handle (8) is hinged with support (7), one end of handle (8) stretches in the groove (10) of sealing plug (9), in the other end application of force of handle (8), just can drive sealing plug (9) and in gland (6), move axially, thereby compress stuffing box packing (5) or loosen stuffing box packing (5).
When pump work, rely on screw mechanism oppositely to carry liquid to realize sealing, at this moment, move handle (8), make it drive sealing plug (9) and break away from gland (6), rubber-like stuffing box packing (5) breaks away from moving cover (3), is in relaxed state; When pump quits work, oppositely move handle (8), drive sealing plug (9), make it compress stuffing box packing (5), stuffing box packing (5) axial compression, radial dilatation, thereby stem shaft interporal lacuna leak of liquid.
Axial moving mechanism also can adopt other form, for example directly push-and-pull or adopt that spiral moves etc.
Claims (3)
1. centrifugal pump spiral sealing device, comprise screw mechanism and parking sealer, screw mechanism is made up of moving cover (3) and quiet cover (2), be processed with spiral grooves on a certain of moving cover (3) or quiet cover (2), parking sealer comprises stuffing box packing (5) and gland (6), it is characterized in that parking sealer also is provided with axial moving mechanism.
2. centrifugal pump spiral sealing device according to claim 1 is characterized in that, axial moving mechanism includes the sealing plug (9) that can move vertically, and one end endoporus is processed with packing groove (11), in packing groove (11), embeds stuffing box packing (5).
3. centrifugal pump spiral sealing device according to claim 1 and 2 is characterized in that, stuffing box packing (5) is to be made by the rubber-like flexible material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97207539 CN2303116Y (en) | 1997-01-24 | 1997-01-24 | Spiral sealing device of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97207539 CN2303116Y (en) | 1997-01-24 | 1997-01-24 | Spiral sealing device of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2303116Y true CN2303116Y (en) | 1999-01-06 |
Family
ID=33927278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97207539 Expired - Fee Related CN2303116Y (en) | 1997-01-24 | 1997-01-24 | Spiral sealing device of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2303116Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481914A (en) * | 2014-10-29 | 2015-04-01 | 郭学文 | Dynamic sealing device and centrifugal pump |
| CN109026821A (en) * | 2018-09-13 | 2018-12-18 | 湖南山水节能科技股份有限公司 | Has the pump of adjustable sealing structure |
-
1997
- 1997-01-24 CN CN 97207539 patent/CN2303116Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481914A (en) * | 2014-10-29 | 2015-04-01 | 郭学文 | Dynamic sealing device and centrifugal pump |
| CN109026821A (en) * | 2018-09-13 | 2018-12-18 | 湖南山水节能科技股份有限公司 | Has the pump of adjustable sealing structure |
| CN109026821B (en) * | 2018-09-13 | 2020-05-26 | 湖南山水节能科技股份有限公司 | Pump with adjustable sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |