CN201915909U - Screw oil pumping unit seal - Google Patents
Screw oil pumping unit seal Download PDFInfo
- Publication number
- CN201915909U CN201915909U CN201020652559XU CN201020652559U CN201915909U CN 201915909 U CN201915909 U CN 201915909U CN 201020652559X U CN201020652559X U CN 201020652559XU CN 201020652559 U CN201020652559 U CN 201020652559U CN 201915909 U CN201915909 U CN 201915909U
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- gland
- axle sleeve
- sleeve
- transmission body
- polished rod
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- Sealing Of Bearings (AREA)
Abstract
A screw oil pumping unit seal belongs to the technical field of mechanical seals and comprises a shaft sleeve, a shaft sleeve positioning body, a limiting gland, a bearing, a mechanical seal, a static ring seat, a driving body, a pressing sleeve and a clamping sleeve, which are coaxially arranged; a mechanical sealing compensation piece is mounted on the shaft sleeve; the shaft sleeve positioning piece is in interference embedding and is welded with the shaft sleeve; the driving body is respectively connected with the static ring seat and the pressing sleeve; the pressing sleeve and the clamping sleeve are radially positioned to drive the torsion; the clamping sleeve is fastened on a polished rod of the oil pumping unit and synchronously rotates along the polished rod; the limiting gland is mounted outside the driving body and is connected with the shaft sleeve positioning body; the bearing is arranged in a cavity defined by the shaft sleeve positioning body, the limiting gland and the mechanical sealing; when the screw oil pumping unit seal is in mounting, the shaft sleeve, the pressing sleeve, the driving body and the clamping sleeve are mounted on the polished rod; and the shaft sleeve positioning body is fixed on a pump body. The screw oil pumping unit seal adopts a structure of combining the mechanical seal with the bearing, so that when the polished rod is rotated, the relative radial jumping and the axial position change between a moving ring and a static ring are voided, and the performance of the mechanical seal is fully played.
Description
Technical field
The invention belongs to axis of rotation and use the mechanical sealing technology field, particularly relate to a kind of screw rod oil pumper sealing.
Technical background
Basic packing_seal and the two kinds of forms of mechanical seal of adopting of the screw rod oil pumper sealing of now using.Packing_seal exists that slip is higher, application life weak point, often maintenance of needs, packing and axle (or axle sleeve) friction, produces frictional resistance, and power attenuation is big, and axle (or axle sleeve) produces unfavorable factors such as wearing and tearing, less use now.Adopting single mechanical seal, is the rotation axis seal form that existing screw pump generally uses.The installation site of sealing is divided into two kinds, and one is mounted in the top of driving head, and one is mounted in the below of driving head.Be installed in the top of driving head, installation, maintenance is convenient, but in case leakage will directly influence the application life of driving head.Be installed in the below of driving head, the installation, maintenance trouble, sealing leak does not influence driving head.From the macroeconomic consideration, the below that mechanical seal is installed in driving head is better than the top.Now the driving head lower seal of Cai Yonging exists the start of run friction lubricating bad, and the axle sleeve 0 shape circle life-span is short, and friction pair separates during shadoof, and problems such as axle sleeve and the fracture of transmission device matching part will make the driving head lower seal generally use, and must solve existing problem.
Summary of the invention
At the technical problem of above-mentioned existence, the invention provides a kind of screw rod oil pumper sealing, it adopts the driving head lower seal, with mechanical seal and bearing structure combining form, increases the stability in use of sealing.
To achieve these goals, technical scheme of the present invention is as follows:
The present invention includes the axle sleeve of coaxial setting, the axle sleeve positioning body, spacing gland, bearing, mechanical seal, stationary seat, transmission body, gland and gripping sleeve, described mechanical seal compensating part is installed on the axle sleeve, axle sleeve positioning body and axle sleeve interference insert and welding, transmission body is connected with gland with stationary seat respectively, gland and gripping sleeve radial location, gripping sleeve is fastened on the oil-extractor polish-rod, rotate synchronously with polished rod, spacing gland is installed on outside the transmission body, spacing gland is connected with the axle sleeve positioning body, at the axle sleeve positioning body, be provided with bearing in the cavity that spacing gland and mechanical seal surround, during installation, axle sleeve, gland, transmission body and gripping sleeve are set on the polished rod, and the axle sleeve positioning body is fixed on the pump housing.
Described transmission body is provided with the positive stop lug boss that cooperates with spacing gland, has on it and the stationary seat of mechanical seal, bolt hole and at least three radial bolts holes that gland cooperates, and transmission body radially is fixed on the polished rod by the 5th bolt.End play a between described spacing gland and the transmission body is 0.3mm～0.5mm.
Described mechanical seal comprises stationary seat and places stationary seat interior rotating ring, stationary ring, rotating seat, retainer, spring, in retainer, rotating ring is set by rotating seat, and be provided with in retainer and the contacted spring of rotating seat, stationary ring places in the stationary seat and contacts with rotating ring.Described stationary seat has the outer peripheral face that matches with bearing inner wall.
Radial location structure between described gland and gripping sleeve: have at least 3 grooves that cooperate with the 3rd bolt on gripping sleeve, the socket cap of the 3rd bolt that is connected between gland and transmission body places in the groove.Described axle sleeve internal orifice dimension is greater than polished rod external diameter 3-5mm.
The invention has the beneficial effects as follows:
The present invention adopts the sealing of driving head lower seal realization to screw rod oil pumper axis of rotation.Mechanical sealing static ring is by the run-in synchronism of stationary seat, transmission body, gland, gripping sleeve realization and axis of rotation; Mechanical sealing linkage ring is connected with the pump housing by retainer, axle sleeve, axle sleeve positioning body, keeps stationary ring static relatively.Adopt the structure of mechanical seal of the present invention and bearing combination, guarantee dynamic and static ring rotation and positional precision relatively by bearing, when polished rod rotated, dynamic and static ring did not have relative circular runout and axial location to change, and the performance of mechanical seal is not fully exerted.
Be the dried running problem of solution equipment operation starting stage sealing, the friction pair inside and outside circle that rotating ring and stationary ring constitute is marked with lubrication oil; By the square cushion rubber axial compression sealing polished rod between gland and transmission body; During for the solution shadoof, the interference of polished rod and axle sleeve increases the axle sleeve diameter of bore; On transmission body, be provided with the positive stop lug boss that cooperates with spacing gland, solved the sealing rotating ring and the stationary ring displacement that cause in the shadoof process, the axially setting in gap between transmission body and spacing gland, transmission body displacement when preventing shadoof; Adopt gland and gripping sleeve separated structures to transmit the polished rod torque, can effectively reduce the influence of polished rod swing, also can stop the harmful effect of shadoof sealing to sealing.
The present invention generally is applicable to the vertical rotating sealing of less swing, compact conformation, good sealing effect, long service life.Mechanical seal among the present invention can be adopted multiple form of structure, to adapt to the different medium needs.
Description of drawings
Fig. 1 is a structure sectional view of the present invention.
Fig. 2 is the structural representation of transmission body among Fig. 1.
Fig. 3 is the structural representation of spacing gland among Fig. 1.
Fig. 4 is the structural representation of stationary seat among Fig. 1.
Fig. 5 is the structural representation of Fig. 1 middle (center) bearing positioning body.
Among the figure: 1. O type circle, 2. back-up ring, 3. stationary ring, 4. rotating ring, 5. baffle ring, 6. jump ring, 7. rotating seat, 8. spring, 9. spacing gland, 10. first bolt, 11. retainer, 12. second bolts, 13. the 3rd bolts, 14. the 4th bolts, 15. gripping sleeves, 16. gland, 17. the 5th bolts, 18. hold-down rings, 19. square cushion rubbers, 20. transmission body, 21. bearing, 22. stationary seats, 23. axle sleeve positioning bodies, 24. axle sleeves, 25. polished rod, 26. positive stop lug boss, 27. radial bolts holes, 28. grooves.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail.
Embodiment 1: as shown in Figure 1, the present invention adopts the driving head lower seal, the axle sleeve 24 that comprises coaxial setting, axle sleeve positioning body 23, spacing gland 9, bearing 21, mechanical seal, transmission body 20, gland 16 and gripping sleeve 15, described mechanical seal compensating part is set in an end on the axle sleeve 24, axle sleeve positioning body 23 is set in the other end of axle sleeve 24, axle sleeve positioning body and axle sleeve interference insert and welding, transmission body 20 is connected with stationary seat 22 by second bolt 12, gland 16 and gripping sleeve 15 radial location driving torques, be specially: on gripping sleeve 15, have the groove 28 that at least 3 (this example is 3) cooperate with the 3rd bolt 13, the socket cap of the 3rd bolt that is connected by 20 of gland 16 and transmission body places in the groove 28 of gripping sleeve 15, to transmit rotation torque, this example adopts the hexagon socket head cap screw socket cap at 3 intervals to place in the groove 28; Axial location between gland 16 and the gripping sleeve 15, the displacement by polished rod 25 changes.Spacing gland 9 is set in outside the transmission body 20, spacing gland 9 is connected with axle sleeve positioning body 23, in the cavity that axle sleeve positioning body 23, spacing gland 9 and mechanical seal surround, be provided with bearing 21, during installation, axle sleeve 24, gland 16, transmission body 20 and gripping sleeve 15 are set on the polished rod 25, and axle sleeve positioning body 23 is fixed on the pump housing.
As shown in Figure 2, this routine described transmission body 20 is provided with the positive stop lug boss 26 that cooperates with spacing gland 9, have on it and the stationary seat 22 of mechanical seal, bolt hole and at least three radial bolts holes 27 that gland 16 cooperates, transmission body 20 radially is fixed on the polished rod 25 by the 5th bolt 17, the 5th bolt 17 is used to locate the position between transmission body 20 and the polished rod 25, make polished rod 25 when swing, transmission body 20 is motionless relatively.The effect of the 5th bolt 17 is to reduce the rubber parts load, can polished rod 25 be rotated with one heart by 17 fine settings of the 5th bolt during installation.As shown in Figure 1, the end play a between described spacing gland 9 and the transmission body 20 is 0.4mm, transmission body displacement when preventing shadoof.Positive stop lug boss 16 is to limit its displacement by spacing gland 9, has solved shadoof and has caused sealing dynamic and static ring friction pair displacement.This example adopts square cushion rubber 19, the sealing of hold-down ring 18 axial compression in transmission body 20 and 25 on polished rod.Figure 3 shows that the structural representation of spacing gland 9.
This routine described mechanical seal is spring type mechanical sealing, comprise stationary seat 22 and the rotating ring 4, stationary ring 3, rotating seat 7, retainer 11, the spring 8 that place in the stationary seat 22, described compensating part comprises rotating ring 4, rotating seat 7, retainer 11 and spring 8, in retainer 11, rotating ring 4 is set by rotating seat 7, jump ring 6, O type circle 1, and be provided with in retainer 11 and rotating seat 7 contacted springs 8, stationary ring 3 is installed in the stationary seat 22 and contacts with rotating ring 4.As shown in Figure 4, described stationary seat 22 has the outer peripheral face that matches with bearing 21 inwalls.Mechanical sealing static ring 3 among the present invention realizes and the run-in synchronism of polished rod 25 that by stationary seat 22, transmission body 20, gland 16, gripping sleeve 15 rotating ring 4 is connected with the pump housing by retainer 11, axle sleeve 24, axle sleeve positioning body 23, keeps rotating ring 4 static relatively.Dynamic and static ring 4,3 rotates relatively and positional precision guarantees by bearing 21, and during rotation, dynamic and static ring 4,3 does not have relative circular runout and axial location to change, and the performance of mechanical seal is not fully exerted.
The connected mode that this routine described gland 16 and gripping sleeve are 15: at least one is built in gripping sleeve 15 connecting bolt that gland 16 and transmission body are 20, described connecting bolt is the 3rd bolt 13, totally 6, three bolts at interval are built in gripping sleeve 15, three bolts in addition place in the gland 16, guarantee the moment of torsion of stable delivery polished rod 25.During for the solution shadoof, the interference of polished rod 25 and axle sleeve 16, these routine described axle sleeve 16 internal orifice dimensions are greater than polished rod 25 external diameter 3mm.Axle sleeve positioning body 23 as shown in Figure 5 is used to locate axle sleeve 24 and bearing 21.
Be the dried running problem of solution equipment operation starting stage sealing, the friction pair inside and outside circle that dynamic and static ring constitutes is marked with lubrication oil; Adopt gland and gripping sleeve separated structures to transmit the polished rod torque, can effectively reduce the influence of polished rod swing, also can stop the harmful effect of shadoof sealing to sealing.
Mechanical seal of the present invention can be selected the mechanical seal of other form for use according to the operating mode difference.Bearing 24 among the present invention is a ball bearing, guarantees the running accuracy of dynamic and static ring 4,3.Compact conformation, convenient disassembly is brought into play the superior function of mechanical seal to greatest extent, uses reliable and stablely, has solved the sealing problem of this kind equipment axis of rotation.
Embodiment 2: this example is identical with embodiment 1 structure, and different is: the end play a between spacing gland 9 described in this example and the transmission body 20 is 0.3mm, transmission body displacement when preventing shadoof; Described axle sleeve 16 internal orifice dimensions are greater than polished rod 25 external diameter 5mm, when having solved shadoof, and the interference problem of polished rod 25 and axle sleeve 16.
Embodiment 3: this example is identical with embodiment 1 structure, and different is: the end play a between spacing gland 9 described in this example and the transmission body 20 is 0.5mm, transmission body displacement when preventing shadoof; Described axle sleeve 16 internal orifice dimensions are greater than polished rod 25 external diameter 4mm, when having solved shadoof, and the interference problem of polished rod 25 and axle sleeve 16.
Embodiment 4: this example is identical with embodiment 1 structure, and different is: the end play a between spacing gland 9 described in this example and the transmission body 20 is 0.45mm, transmission body displacement when preventing shadoof; Described axle sleeve 16 internal orifice dimensions are greater than polished rod 25 external diameter 3.5mm, when having solved shadoof, and the interference problem of polished rod 25 and axle sleeve 16.
Embodiment 5: this example is identical with embodiment 1 structure, and different is: the end play a between spacing gland 9 described in this example and the transmission body 20 is 0.35mm, transmission body displacement when preventing shadoof; Described axle sleeve 16 internal orifice dimensions are greater than polished rod 25 external diameter 4.5mm, when having solved shadoof, and the interference problem of polished rod 25 and axle sleeve 16.
Claims (7)
1. screw rod oil pumper sealing, it is characterized in that: the axle sleeve that comprises coaxial setting, the axle sleeve positioning body, spacing gland, bearing, mechanical seal, stationary seat, transmission body, gland and gripping sleeve, described mechanical seal compensating part is installed on the axle sleeve, axle sleeve positioning body and axle sleeve interference insert and welding, transmission body is connected with gland with stationary seat respectively, gland and gripping sleeve radial location, gripping sleeve is fastened on the oil-extractor polish-rod, rotate synchronously with polished rod, spacing gland is installed on outside the transmission body, spacing gland is connected with the axle sleeve positioning body, at the axle sleeve positioning body, be provided with bearing in the cavity that spacing gland and mechanical seal surround, during installation, axle sleeve, gland, transmission body and gripping sleeve are set on the polished rod, and the axle sleeve positioning body is fixed on the pump housing.
2. screw rod oil pumper sealing according to claim 1, it is characterized in that: described transmission body is provided with the positive stop lug boss that cooperates with spacing gland, have on it and the stationary seat of mechanical seal, bolt hole and at least three radial bolts holes that gland cooperates, transmission body radially is fixed on the polished rod by the 5th bolt.
3. screw rod oil pumper sealing according to claim 1 and 2, it is characterized in that: the end play a between described spacing gland and the transmission body is 0.3mm～0.5mm.
4. screw rod oil pumper sealing according to claim 1, it is characterized in that: described mechanical seal comprises stationary seat and places stationary seat interior rotating ring, stationary ring, rotating seat, retainer, spring, in retainer, rotating ring is set by rotating seat, and be provided with in retainer and the contacted spring of rotating seat, stationary ring places in the stationary seat and contacts with rotating ring.
5. screw rod oil pumper sealing according to claim 4, it is characterized in that: described stationary seat has the outer peripheral face that matches with bearing inner wall.
6. screw rod oil pumper sealing according to claim 1, it is characterized in that: the radial location structure between described gland and gripping sleeve: have at least 3 grooves that cooperate with the 3rd bolt on gripping sleeve, the socket cap of the 3rd bolt that is connected between gland and transmission body places in the groove.
7. screw rod oil pumper sealing according to claim 1, it is characterized in that: described axle sleeve internal orifice dimension is greater than polished rod external diameter 3-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020652559XU CN201915909U (en) | 2010-12-10 | 2010-12-10 | Screw oil pumping unit seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020652559XU CN201915909U (en) | 2010-12-10 | 2010-12-10 | Screw oil pumping unit seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201915909U true CN201915909U (en) | 2011-08-03 |
Family
ID=44415711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020652559XU Expired - Fee Related CN201915909U (en) | 2010-12-10 | 2010-12-10 | Screw oil pumping unit seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201915909U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561972A (en) * | 2010-12-10 | 2012-07-11 | 丹东波纹管密封有限公司 | Seal of screw oil pumping unit |
| CN108603601A (en) * | 2016-02-02 | 2018-09-28 | 伊格尔博格曼德国有限公司 | Mechanically-sealing apparatus with simple structure |
| CN109973656A (en) * | 2019-04-24 | 2019-07-05 | 东台船用配件有限公司 | From centering stern shaft seal gland |
-
2010
- 2010-12-10 CN CN201020652559XU patent/CN201915909U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561972A (en) * | 2010-12-10 | 2012-07-11 | 丹东波纹管密封有限公司 | Seal of screw oil pumping unit |
| CN102561972B (en) * | 2010-12-10 | 2015-01-07 | 丹东波纹管密封有限公司 | Seal of screw oil pumping unit |
| CN108603601A (en) * | 2016-02-02 | 2018-09-28 | 伊格尔博格曼德国有限公司 | Mechanically-sealing apparatus with simple structure |
| CN109973656A (en) * | 2019-04-24 | 2019-07-05 | 东台船用配件有限公司 | From centering stern shaft seal gland |
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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: 20110803 Termination date: 20141210 |
|
| EXPY | Termination of patent right or utility model |