CN2823611Y - Mechanical sealer for desulfurizing circulation pump - Google Patents
Mechanical sealer for desulfurizing circulation pump Download PDFInfo
- Publication number
- CN2823611Y CN2823611Y CN 200520035840 CN200520035840U CN2823611Y CN 2823611 Y CN2823611 Y CN 2823611Y CN 200520035840 CN200520035840 CN 200520035840 CN 200520035840 U CN200520035840 U CN 200520035840U CN 2823611 Y CN2823611 Y CN 2823611Y
- Authority
- CN
- China
- Prior art keywords
- ring
- axle sleeve
- driving seat
- stationary ring
- seat
- 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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- Structures Of Non-Positive Displacement Pumps (AREA)
- Mechanical Sealing (AREA)
Abstract
The utility model discloses a mechanical sealing device for a desulfurizing circulation pump, which comprises a pump shaft, a moving ring assembly and a stationary ring assembly, wherein the moving ring assembly and the stationary ring assembly are assembled on the pump shaft, and the back surfaces of friction rings of a moving ring and a stationary ring are both provided with L-shaped rubber pads; a shaft sleeve of a driving seat of the moving ring assembly is provided with a plurality of axial notches at the part provided with a contracting disc; a throttling ring is also arranged on the shaft sleeve of the driving seat, and a spring seat of the stationary ring assembly is provided with a flushing liquid inlet and a flushing liquid out let. The utility model has the advantages that the vibration resistance and the impact resistance of the moving ring and the stationary ring are good, the rupture is not easy, the transmission of an inner shaft sleeve and the shaft sleeve of the driving seat is stable and reliable, the failure is not easy and the service life is long.
Description
Technical field
The utility model relates to a kind of mechanical seal device, especially for the mechanical seal device on the desulfuration recycle pump pump shaft.
Background technique
At present, domestic large-size thermal power plant has family more than 500, from environmental angle, national requirements thermal power generation unit must be equipped with flue gas desulphurization system, and the mechanical seal device of present widely used desulfuration recycle pump to be German Bouguer Man produce, as shown in Figure 1, there is following shortcoming in this mechanical seal device: 1. dynamic and static ring is a rigid construction, exist stress to concentrate at the step place of dynamic and static ring, cause intensity to reduce easy-rupturing when being vibrated and impacting; 2. internal axle sleeve adopts a kind of drive that tightens disk with driving seat axle sleeve, under the effect of long-term vibration and pressure, loosening phenomenon appears easily, moving ring assembly is produced to be moved axially, thereby make the mechanical seal degradation failure, particularly under the bigger situation of the diameter of axle, the bearing vibrations aggravate, and the probability that this type of problem occurs is bigger; 3. this mechanical seal device is this mechanical seal device of anhydrous type, there is not regularly outer flushing interface, when pump just starts, slurry does not also in time enter under the situation of Seal cage, be dry friction between the friction ring of dynamic and static ring, cause mechanical seal to be lost efficacy rapidly, this also is this mechanical seal device short key factor in working life.
The model utility content
The purpose of this utility model provide a kind of dynamic and static ring not the transmission of easy-rupturing, internal axle sleeve and driving seat axle sleeve solid and reliable, can provide lubricated to the friction ring of dynamic and static ring, be difficult for the mechanical seal device of the desulfuration recycle pump that lost efficacy.
For achieving the above object, the mechanical seal device of desulfuration recycle pump of the present utility model, comprise pump shaft, be assembled in moving ring assembly and static components on the pump shaft, described moving ring assembly comprises internal axle sleeve, be installed in driving seat axle sleeve on the internal axle sleeve by tightening disk, the rotating ring that is connected with driving seat axle sleeve, the internal axle sleeve O-ring seals, drive seat axle sleeve O-ring seals, described static components comprises stationary ring, place the throw-out collar of the stationary ring the other end, spring, the spring seat of band water conservancy diversion cover, and flange seat, stationary ring O-ring seals etc., the friction ring back side at described rotating ring and stationary ring is provided with L shaped rubber pad, can improve moving, stationary ring bears axially and radially vibration and the ability of impact, not easy-rupturing.
As further improvement of the utility model, be provided with several axial notches at the driving seat axle sleeve place that the deflation disk is installed, easier herein quilt is inwardly compressed, the applying that drives seat axle sleeve and internal axle sleeve is tighter, and the transmission of the two is more solid and reliable, is difficult for losing efficacy.
As further improvement of the utility model, described spring seat is provided with washing solution import and outlet, also is provided with restrictor ring on driving seat axle sleeve, can before pump startup, feed washing solution in advance, sealing surface to dynamic and static ring is lubricated, and prevents the appearance of dry friction, loses efficacy when avoiding starting; The setting of restrictor ring can prevent that washing solution is from driving the end face leakage of seat axle sleeve.
In sum, the utlity model has solid and reliable, the difficult inefficacy of performance transmission good, not easy-rupturing, internal axle sleeve and driving seat axle sleeve of dynamic and static ring anti-vibration and impact, the advantage of long service life.
Description of drawings
Fig. 1 is the utility model embodiment's a plan view.
Fig. 2 is the plan view of the utility model embodiment's driving seat axle sleeve.
Fig. 3 is the left view of Fig. 2.
Embodiment
Further specify the utility model below in conjunction with accompanying drawing.
By shown in Figure 1, the mechanical seal device of the utility model embodiment's desulfuration recycle pump, comprise pump shaft 1, be assembled in moving ring assembly and static components on the pump shaft 1, described moving ring assembly comprises the internal axle sleeve 2 that is installed in pump shaft 1 by the impeller 14 at two ends and stripping ring 15, be installed in driving seat axle sleeve 4 on the internal axle sleeve 2 by tightening disk 3, with drive the rotating ring 5 that seat axle sleeve 4 is connected by stop pin 6, the internal axle sleeve O-ring seals, drive seat axle sleeve O-ring seals, described static components comprises and rotating ring 5 contacted stationary rings 7, place the throw-out collar 8 of the other end of stationary ring 7 successively, spring 9, the spring seat 11 of band water conservancy diversion cover 10, and flange seat 12, stationary ring O-ring seals etc., static components is by being connected and fixed with limiting board 20, the friction ring back side at described rotating ring 5 and stationary ring 7 is provided with L shaped rubber pad 13, improve the performance of rotating ring 5 and stationary ring 7 anti-vibrations and impact, on spring seat 11, be provided with washing solution import 16 and outlet 17, be provided with the restrictor ring 18 that material is a polytetrafluoroethylene at an end that drives seat axle sleeve 4, restrictor ring 18 is fixing by the baffle plate 21 that is connected with spring seat 11, can before pump startup, feed washing solution in advance, to moving, the sealing surface of stationary ring is lubricated, as shown in Figures 2 and 3, driving on the seat axle sleeve 4, the part that tightens disk 3 is installed has six axial notches 19, make the applying that drives seat axle sleeve 4 and internal axle sleeve 2 tighter, the transmission of the two is more solid and reliable, is difficult for losing efficacy.
Claims (3)
1. the mechanical seal device of a desulfuration recycle pump, comprise pump shaft, be assembled in moving ring assembly and static components on the pump shaft, described moving ring assembly comprises internal axle sleeve, be installed in driving seat axle sleeve on the internal axle sleeve by tightening disk, the rotating ring that is connected with driving seat axle sleeve, the internal axle sleeve O-ring seals, drive seat axle sleeve O-ring seals, described static components comprises stationary ring, place the throw-out collar of the stationary ring the other end, spring, the spring seat of band water conservancy diversion cover, and flange seat and stationary ring O-ring seals etc., it is characterized in that being provided with L shaped rubber pad at the friction ring back side of described rotating ring and stationary ring.
2. the mechanical seal device of desulfuration recycle pump according to claim 1 is characterized in that being provided with several axial notches at the driving seat axle sleeve place that the deflation disk is installed,
3. the mechanical seal device of desulfuration recycle pump according to claim 1 and 2 is characterized in that being provided with washing solution import and outlet on described spring seat, also is provided with restrictor ring on driving seat axle sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035840 CN2823611Y (en) | 2005-10-20 | 2005-10-20 | Mechanical sealer for desulfurizing circulation pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035840 CN2823611Y (en) | 2005-10-20 | 2005-10-20 | Mechanical sealer for desulfurizing circulation pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2823611Y true CN2823611Y (en) | 2006-10-04 |
Family
ID=37032722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520035840 Expired - Fee Related CN2823611Y (en) | 2005-10-20 | 2005-10-20 | Mechanical sealer for desulfurizing circulation pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2823611Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619777A (en) * | 2012-03-07 | 2012-08-01 | 大连华阳光大密封有限公司 | Structure favorable for mechanical sealing and disassembling |
| CN111622979A (en) * | 2020-04-07 | 2020-09-04 | 福建福清核电有限公司 | Method for improving sealing reliability of third-stage mechanical seal of main pump |
-
2005
- 2005-10-20 CN CN 200520035840 patent/CN2823611Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619777A (en) * | 2012-03-07 | 2012-08-01 | 大连华阳光大密封有限公司 | Structure favorable for mechanical sealing and disassembling |
| CN111622979A (en) * | 2020-04-07 | 2020-09-04 | 福建福清核电有限公司 | Method for improving sealing reliability of third-stage mechanical seal of main pump |
| CN111622979B (en) * | 2020-04-07 | 2021-08-17 | 福建福清核电有限公司 | Method for improving sealing reliability of third-stage mechanical seal of main pump |
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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 |