CN203395189U - Mechanical seal structure of rubber bellows of pump shaft - Google Patents
Mechanical seal structure of rubber bellows of pump shaft Download PDFInfo
- Publication number
- CN203395189U CN203395189U CN201320442551.4U CN201320442551U CN203395189U CN 203395189 U CN203395189 U CN 203395189U CN 201320442551 U CN201320442551 U CN 201320442551U CN 203395189 U CN203395189 U CN 203395189U
- Authority
- CN
- China
- Prior art keywords
- bellows
- ring
- pump shaft
- spring
- drive sleeve
- 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.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Mechanical Sealing (AREA)
Abstract
The utility model relates to a mechanical seal structure of a rubber bellows of a pump shaft. The mechanical structure is mounted between a pump shell and the pump shaft and comprises a fixed ring, a moving ring, a bellows, a spring, a spring holder, a snap ring, and a stop gasket. The outer end of the moving ring is coaxially mounted at one end of the bellows, and the other end of the bellows is fixed on the pump shaft. A transmission sleeve is coaxially fixed on the moving ring. The spring is coaxially mounted between a vertical plate at the inner end of the spring holder and the transmission sleeve. Projections of the snap ring are disposed in guide grooves of the transmission sleeve respectively. The stop gasket is coaxially fixed at the part of the bellows, close to the moving ring. The bellows between the stop gasket and the snap ring is in a corrugated shape. The mechanical seal structure has the advantages that the structure of the bellows is changed, the length of the transmission sleeve is increased, the bellows is made into the corrugated shape at the operating level, promoting the formation of the corrugated shape of the bellows through the spring is not required, spring force completely acts upon the moving ring to allow the moving ring and the fixed ring to be tightly attached, sealing never fails even when the pump shaft plays, and the seal structure is longer in service life.
Description
Technical field
The utility model belongs to mechanical seal field, relates to the mechanical seal of pump shaft, especially a kind of rubber bellows mechanical seal structure of pump shaft.
Background technique
For a long time, rubber bellows mechanical seal, because its compact structure, easy for installation, cheap etc. is widely used, is especially applied in the submersible electric pump serial equipments such as petroleum production.Submersible electric pump often dive is dark to hundreds of rice under ground surface, once leaking appears in sealing, changes that they are loaded down with trivial details especially, waste time and energy, and expense is expensive especially, so this just requires sealing to have good safe application performance.And in reality, have a lot of sealings very short times of often working to leak, do not reach desirable working life far away.In this its and the quality of mechanical seal, the error of installation has certain relation, but various unfavorable conditions that structural design that the more important thing is sealing produces can't meet equipment operation time, such as axle is altered, axle pendulum etc.As equipment such as submersible electric pumps, in the process of operation, unavoidably certain axial float can occur, this can bring certain difficulty to the structural design of mechanical seal, and this just requires used mechanical seal can overcome the harsh operating conditions such as axle is altered, axle pendulum.
By retrieval, find the following several pieces of patent publication us relevant to patent application of the present invention:
1, rubber bellows mechanical seal (CN201827377U), a kind of rubber bellows mechanical seal for mechanical seal field is disclosed, comprise rotating ring, upper spring seat, lower spring cup, spring and with the rubber corrugated pipe of rotating shaft interference fit, the endoporus interference fit of rotating ring periphery and rubber corrugated pipe left end, upper spring seat is enclosed within on rubber corrugated pipe and withstands on the step surface of rubber corrugated pipe left end, lower spring cup is enclosed within on rubber corrugated pipe and withstands on the step surface of rubber corrugated pipe right-hand member, upper spring seat and lower spring cup and rubber corrugated pipe interference fit, spring one end withstands on upper spring seat, the other end withstands on lower spring cup, upper spring seat is provided with the first hasp towards spring, lower spring cup is provided with the second hasp towards spring, spring left and right both ends of the surface are respectively equipped with the first groove and the second groove, the first hasp inserts in the first groove, the second hasp inserts in the second groove.The utility model rubber bellows mechanical seal can not produce the phenomenon of skidding between spring and spring seat.
2, mechanical seal device for rubber bellows (CN201190795), a kind of mechanical seal device for rubber bellows is disclosed, comprise moving ring assembly and the static components being formed by stationary ring (3) and rubber cup (1), it is upper that static components is fixed on cavity (2), rotating ring (4) outer wall and rubber corrugated pipe (8) one end interference fit; Metal shell (5) is enclosed within one end of rubber corrugated pipe (8), and rubber corrugated pipe (8) one end is interference fitted on axle (9); Spring seat (7) is enclosed within one end of rubber corrugated pipe (8), spring (6) one end is against on metal shell, it is upper that the other end of spring (6) is against spring seat (7), and rotating ring (4) keeps laminating at effect and the stationary ring (3) of spring (6); Described metal shell (5) and spring seat (7) sliding connection are also mutually circumferentially spacing.This mechanical seal device for rubber bellows can carry high pulling torque, effectively prevent rubber corrugated pipe tear with camber of spring so that guarantee sealing.
By contrast, there are the different of essence from above-mentioned patent publication us in present patent application.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art part, a kind of rubber bellows mechanical seal structure of pump shaft is provided, sealing structure is by the structural change of rubber corrugated pipe, increased the compression range of mechanical seal, and made still can work under the bad conditions such as it is altered at axle, axle pendulum.
The utility model solves its technical problem and is achieved through the following technical solutions:
A kind of rubber bellows mechanical seal structure of pump shaft, be arranged between pump case and pump shaft, described sealing configuration comprises stationary ring, rotating ring, bellows, spring, spring seat and snap ring, gear pad, stationary ring is packed on the pump shaft in pump case by seal ring, the inner end of rotating ring is that end face seal is connected with stationary ring, one end of bellows is installed in the outer end of rotating ring with axial end, the other end of this bellows is packed on pump shaft; On rotating ring, be coaxially fixedly mounted with a drive sleeve, riser is made in one end of rotating ring in the inner end of this drive sleeve, the uniform guide groove that is shaped with of the other end, the outboard end interval mounting spring seat of this guide groove, coaxial mounting spring between the inner end riser of spring seat and drive sleeve, in the guide groove of drive sleeve, all guiding is installed the projection of snap ring, at bellows, near rotating ring position, is coaxially fixed with gear pad, and the bellows between gear pad and snap ring is made wave mode.
And the wave mode of described bellows is the highest and when minimum in extruding, gapped between spring seat and drive sleeve, the guide groove root of the projection of snap ring and drive sleeve is gapped.
Advantage of the present utility model and beneficial effect are:
1, this sealing configuration has changed the structure of bellows, and the corresponding length that increases drive sleeve, when working depth, on bellows, made wave mode, do not need spring force to impel it to form, spring force is acted on rotating ring completely, rotating ring and stationary ring are firmly fit together, even if having at pump shaft under the operating mode of play, can not make seal failure yet, extend the working life of sealing.
2, this sealing configuration is compared with rubber bellows mechanical seal in the past, its maximum feature is the compression range that has increased rubber corrugated pipe, the ripple of its bellows under the state of working depth has just been formed, and when assembling, spring seat promotion bellows pushes along pump shaft, to assembling, has brought convenience.
Accompanying drawing explanation
Fig. 1 is structure cross-sectional schematic of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, by specific embodiment, the invention will be further described, and following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of rubber bellows mechanical seal structure of pump shaft, be arranged between pump case 1 and pump shaft 12, as shown in Figure 1, sealing structure comprises stationary ring 8, rotating ring 9, bellows 3, spring 6, spring seat 2 and snap ring 4, gear pad 11, stationary ring is packed on the pump shaft in pump case by seal ring 7, the inner end of rotating ring is that end face seal is connected with stationary ring, and one end of bellows is installed in the outer end of rotating ring with axial end, and the other end of this bellows is packed on pump shaft; On rotating ring, be coaxially fixedly mounted with a drive sleeve 10, riser is made in one end of rotating ring in the inner end of this drive sleeve, the uniform guide groove that is shaped with of the other end, the outboard end interval mounting spring seat of this guide groove, coaxial mounting spring between the inner end riser of spring seat and drive sleeve, in the guide groove of drive sleeve, all lead the projection of snap ring is installed, at bellows, near rotating ring position, be coaxially fixed with gear pad, bellows between gear pad and snap ring is made wave mode 5, the play of made bellows wave mode compensation pump shaft and seal leakage problem between the rotating ring stationary ring that causes.
The wave mode of bellows is the highest and when minimum in extruding, should guarantee the gap between spring seat and drive sleeve, and the gap of the guide groove root of the projection of snap ring and drive sleeve.
Working principle of the present utility model is:
When sealing in working depth, the bottom of spring seat and rubber corrugated pipe is adjacent to, and now one of the middle formation of bellows is wavy, and the projection of snap ring is directed between the guide groove of drive sleeve, do not contact with the guide groove root of drive sleeve, between have an intersegmental gap.In pump operation process, when pump shaft generation axle is altered phenomenon, can't impact machine envelope.When moment of play occurs left pump shaft, bellows is driving snap ring and spring seat to be subjected to displacement left, and now the wave mode of bellows is not recovered completely, and rotating ring is also subject to bellows power to the right, and the end face between rotating ring and stationary ring can also fit together.When moment of play occurs to the right pump shaft, bellows is driving snap ring and spring seat to be subjected to displacement to the right, now between spring seat and drive sleeve, leave gap and not contact, the guide groove root of the projection of snap ring and drive sleeve is gapped not to be contacted yet, and now bellows ripple also and tight, bellows can also play buffer function, so rotating ring can't be subject to because play to the right occurs pump shaft the operation that the impact force mechanical seal of moment still can be safe and reliable.
During assembling, spring seat contact with bellows bottom during because of working depth, so only need firmly spring seat and bellows integral body be pushed along axle while assembling, to assembling, has brought convenience.
Through on-the-spot experimental observation, the utilization of this sealing configuration on submersible electric pump reached desirable effect.
Claims (2)
1. the rubber bellows mechanical seal structure of a pump shaft, be arranged between pump case and pump shaft, it is characterized in that: described sealing configuration comprises stationary ring, rotating ring, bellows, spring, spring seat and snap ring, gear pad, stationary ring is packed on the pump shaft in pump case by seal ring, the inner end of rotating ring is that end face seal is connected with stationary ring, one end of bellows is installed in the outer end of rotating ring with axial end, the other end of this bellows is packed on pump shaft; On rotating ring, be coaxially fixedly mounted with a drive sleeve, riser is made in one end of rotating ring in the inner end of this drive sleeve, the uniform guide groove that is shaped with of the other end, the outboard end interval mounting spring seat of this guide groove, coaxial mounting spring between the inner end riser of spring seat and drive sleeve, in the guide groove of drive sleeve, all guiding is installed the projection of snap ring, at bellows, near rotating ring position, is coaxially fixed with gear pad, and the bellows between gear pad and snap ring is made wave mode.
2. the rubber bellows mechanical seal structure of pump shaft according to claim 1, it is characterized in that: the wave mode of described bellows is the highest and when minimum in extruding, gapped between spring seat and drive sleeve, the guide groove root of the projection of snap ring and drive sleeve is gapped
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320442551.4U CN203395189U (en) | 2013-07-23 | 2013-07-23 | Mechanical seal structure of rubber bellows of pump shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320442551.4U CN203395189U (en) | 2013-07-23 | 2013-07-23 | Mechanical seal structure of rubber bellows of pump shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203395189U true CN203395189U (en) | 2014-01-15 |
Family
ID=49906722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320442551.4U Withdrawn - After Issue CN203395189U (en) | 2013-07-23 | 2013-07-23 | Mechanical seal structure of rubber bellows of pump shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203395189U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352984A (en) * | 2013-07-23 | 2013-10-16 | 天津市联强机械密封技术有限公司 | Rubber corrugated pipe mechanical sealing structure of pump shaft |
-
2013
- 2013-07-23 CN CN201320442551.4U patent/CN203395189U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352984A (en) * | 2013-07-23 | 2013-10-16 | 天津市联强机械密封技术有限公司 | Rubber corrugated pipe mechanical sealing structure of pump shaft |
| CN103352984B (en) * | 2013-07-23 | 2016-01-27 | 天津市联强机械密封技术有限公司 | A kind of rubber bellows mechanical seal structure of pump shaft |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202012621U (en) | Composite sealing device | |
| CN103775750A (en) | Coiled tubing cable-penetrating sealing device | |
| CN202798276U (en) | Exposed motor insulation end cover | |
| CN103352984B (en) | A kind of rubber bellows mechanical seal structure of pump shaft | |
| CN203395189U (en) | Mechanical seal structure of rubber bellows of pump shaft | |
| CN108306440B (en) | Shaft end sealing structure and sealing method of dry submersible motor | |
| CN105179157A (en) | Outer-curve radial plunger hydraulic motor | |
| CN201944000U (en) | Sealing improvement between double-suction pump shaft and filling shaft sleeve | |
| CN202231533U (en) | Motor sealing structure of development machine | |
| CN202228681U (en) | Combined oil seal | |
| CN201521641U (en) | Efficient carbon ring sealing device | |
| CN102278474A (en) | Contact type dynamic sealing method and dynamic sealing device of dishing sealing ring | |
| CN201434076Y (en) | Rubber-lined elastic packing box | |
| CN207830406U (en) | A kind of band brake disk drum-type gear coupling preventing bounce | |
| CN201739455U (en) | Movable ring transmission device in cartridge mechanical seal | |
| CN201774349U (en) | Sealing structure for motor of dish washing machine | |
| CN201786729U (en) | Sealing device of submersible pump | |
| CN205064173U (en) | Radial plunger hydraulic motor of outer curve | |
| CN210599477U (en) | Non-oil-filled motor on deep-well pump | |
| CN204114124U (en) | A kind of hydraulic element leak tight seal | |
| CN203570655U (en) | Built-in type double mechanical seal structure of plastic pump | |
| CN202798265U (en) | Waterproof motor | |
| CN2913681Y (en) | Inwardly retracting type seal ring | |
| CN205154624U (en) | A seal structure for air compressor machine oil pump drive spindle | |
| CN213661352U (en) | Connecting structure of inner shaft oil pump motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140115 Effective date of abandoning: 20160127 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |