CN107762964A - Single mechanical end face seal - Google Patents
Single mechanical end face seal Download PDFInfo
- Publication number
- CN107762964A CN107762964A CN201711163612.2A CN201711163612A CN107762964A CN 107762964 A CN107762964 A CN 107762964A CN 201711163612 A CN201711163612 A CN 201711163612A CN 107762964 A CN107762964 A CN 107762964A
- Authority
- CN
- China
- Prior art keywords
- drive sleeve
- rotating ring
- rubber
- rubber bellows
- spring
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3464—Mounting of the seal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/36—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member connected by a diaphragm or bellow to the other member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
Abstract
The invention discloses a kind of single mechanical end face seal, including rubber stationary seat, stationary ring, rotating ring, rubber bellows, drive sleeve, collar and spring, stationary ring is in rubber stationary seat, drive sleeve is provided with location structure, the front end of rubber bellows is pressed in drive sleeve by rotating ring, collar interference is on the rear end periphery wall of rubber bellows, the rear end of rubber bellows has sets of holes, there is aduncate flexible compensation section in the middle part of rubber bellows, the rear end of drive sleeve is provided with some interior lugs and some outer lugs, collar front periphery is provided with locating slot, locating slot corresponds with interior lug to be coordinated, spring applies elastic acting force to drive sleeve makes rotating ring be in close contact with stationary ring.Mechanical seal is rational in infrastructure in the present invention, and spring one end is reliably connected drive sleeve, and the other end is reliably connected pump shaft, is avoided that rubber bellows are twisted off, and rotating ring integrally rotates with pump shaft, dynamic and static ring wear automatic-compensation, so as to ensure the validity of sealing.
Description
Technical field
The present invention relates to a kind of mechanical seal, and in particular to a kind of single mechanical end face seal.
Background technology
A kind of mechanical sealing structure for pump is disclosed in patent document CN20362729U, it includes being set in rotating shaft
Rubber bellows, the rubber bellows are provided with annular groove close to one end of pump cover, and the annular groove is embedded with rotating ring, described
Position on the outside of rubber bellows close to both ends is also respectively formed with step, and preceding spring base is respectively arranged with the step with after
Spring base, the position outside the rubber bellows between the preceding spring base and rear spring seat are set with to before described
Spring base and rear spring seat apply the spring of elastic force；Stationary ring is provided with the pump cover, between the stationary ring and the pump cover
Radial seal is provided with, the rotating ring includes the circular body portion in the annular groove and connected with the main part
And the diminishing tapering of size, the tapering are resisted against on the stationary ring.Problem present in above-mentioned patent document is rotating shaft
Fully rely on the rotating ring before rubber bellows drive on spring base and spring base when rotating to rotate, this causes rubber corrugated tube capacity
Easily twisted off and then cause seal failure.
The content of the invention
On the other hand, the technical problems to be solved by the invention are that rubber bellows are easily twisted off and led in existing machinery sealing
The problem of causing seal failure.
Realizing the technical scheme of the object of the invention is：
A kind of single mechanical end face seal, including rubber stationary seat, stationary ring, rotating ring, rubber bellows, drive sleeve, collar and
Spring, in the rubber stationary seat, the drive sleeve is provided with and the rotating ring is fixed in drive sleeve the stationary ring
Location structure, the front end of the rubber bellows are pressed in the drive sleeve by the rotating ring, the collar interference
On the rear end periphery wall of the rubber bellows, the rear end of the rubber bellows has the sets of holes with pump shaft interference fit,
There is aduncate flexible compensation section in the middle part of the rubber bellows, be provided with if the rear end of the drive sleeve is circumferentially spaced
Lug and some outer lugs in dry, the interior lug extends axially rearward with the outer lug along the drive sleeve, described
Some interior lugs are on the first circumference, and described some outer lugs are on the second circumference, first circumference and described
The center of two circumference is on the axis of the drive sleeve, and the diameter of second circumference is more than the described first circle
The diameter in week, the circumferentially spaced locating slot being provided with interior lug equal amount of the collar front periphery, described positioning
Groove corresponds with described interior lug to be coordinated, one end of the spring be sleeved on described some outer lugs and with the biography
Dynamic set offsets, and the spring applies elastic acting force to the drive sleeve makes the rotating ring be in close contact with the stationary ring.
In above-mentioned technical proposal, the location structure includes being molded over the locating notch of the rotating ring outer peripheral edge, is molded over
It is suitable to the positioning convex being engaged with the locating notch and the presser feet being molded in the drive sleeve in the drive sleeve, it is described
Locating notch be engaged with the positioning convex it is circumferentially positioned to the rotating ring, the presser feet be crimped on the rotating ring will described in
Rotating ring is limited in the drive sleeve.
In above-mentioned technical proposal, the spring is tower spring, and the big end of the tower spring is sleeved on described some outer lugs,
The small end of the tower spring is suitable to be socketed with pump shaft interference.
In above-mentioned technical proposal, the side wall corresponding site of the drive sleeve is inwardly stamped and formed out the positioning convex.
In above-mentioned technical proposal, towards forming annular groove on the end face of the rotating ring on the rubber stationary seat.
In above-mentioned technical proposal, back to forming some be arranged concentrically on the end face of the rotating ring on the rubber stationary seat
Stabilizer tab loop wire.
In above-mentioned technical proposal, the stationary ring is provided with anti-reverse mounting short slot.
In above-mentioned technical proposal, one end inner side of the rotating ring towards the rubber bellows forms annular breach.
The present invention has positive effect：Using the structure in the present invention, rotating ring is positioned structure positioning in drive sleeve,
The front end of rubber bellows is pressed in drive sleeve by rotating ring, and rubber bellows rear end is interference fitted with pump shaft and passes through collar
To lock, the interior tab cooperation on locating slot and drive sleeve in collar can be driven torsion but not influence drive sleeve axially activity,
Therefore the drive sleeve and rotating ring synchronous axial system are driven by collar in pump shaft rotation process, can so avoids rubber bellows
Twisted off, ensure the validity of sealing.
Brief description of the drawings
Fig. 1 is the sectional view of mechanical seal in the present invention；
Fig. 2 is the partial enlarged view at A in Fig. 1；
Fig. 3 is the positive direction view of rotating ring in the present invention；
Fig. 4 is the rearview of drive sleeve in the present invention；
Fig. 5 is the dimensional structure diagram of drive sleeve shown in Fig. 4；
Fig. 6 is the dimensional structure diagram from another angle shown in Fig. 5 during drive sleeve；
Fig. 7 is positive direction view when collar and drive sleeve coordinate in the present invention；
Fig. 8 is the positive direction view of collar in the present invention；
Fig. 9 is the dimensional structure diagram of collar shown in Fig. 8.
Reference is shown in figure：1- rubber stationary seats；11- annular grooves；12- stabilizer tab loop wires；2- stationary rings；21-
Anti-reverse mounting short slot；3- rotating rings；31- locating notches；4- rubber bellows；41- flexible compensation sections；5- drive sleeves；Lug in 51-；
The outer lugs of 52-；The circumference of 53- first；The circumference of 54- second；55- positioning convex；56- presser feets；6- collars；61- locating slots；7- bullets
Spring；8- pump shafts.
Embodiment
The concrete structure in the present invention is done with explanation with reference to Figure of description：
A kind of single mechanical end face seal, as shown in Figures 1 to 9, it includes rubber stationary seat 1, stationary ring 2, rotating ring 3, rubber
Bellows 4, drive sleeve 5, collar 6 and spring 7, in the rubber stationary seat 1, the drive sleeve 5 is provided with the stationary ring 2
The location structure rotating ring 3 being fixed in drive sleeve 5, the front end of the rubber bellows 4 are pressed on by the rotating ring 3
In the drive sleeve 5, the interference of collar 6 is on the rear end periphery wall of the rubber bellows 4, the rubber bellows
4 rear end has the sets of holes 41 being interference fitted with pump shaft 8, and the middle part of rubber bellows 4 has aduncate flexible compensation
Section 41, the rear end of the drive sleeve 5 is circumferentially spaced to be provided with some interior lugs 51 and some outer lugs 52, the interior lug 51
Being extended axially rearward with the outer lug 52 along the drive sleeve 5, described some interior lugs 51 are on the first circumference 53,
Described some outer lugs 52 are on the second circumference 54, and the center of first circumference 53 and second circumference 54 is in
On the axis of the drive sleeve 5, and the diameter of second circumference 54 is more than the diameter of first circumference 53, described
The circumferentially spaced locating slot 61 being provided with the interior equal amount of lug 51 of the front periphery of collar 6, described locating slot 61 and institute
The interior lug 51 stated, which corresponds, to be coordinated, one end of the spring 7 be sleeved on described some outer lugs 52 and with the biography
Dynamic set 5 offsets, and to prevent spring 7 from being scraped with collar 6 and rubber bellows 4, the spring 7 applies to the drive sleeve 5
Elastic acting force makes the rotating ring 3 play dynamic and static ring sealing wear self-compensating effect with the stationary ring 2 close contact, so as to
Ensure the sealing between rotating ring 3 and stationary ring 2.Using the structure in the present embodiment, rotating ring 3 is positioned structure positioning in drive sleeve 5
Interior, the front end of rubber bellows 4 is pressed in drive sleeve by rotating ring, and the rear end of rubber bellows 4 is interference fitted and led to pump shaft
Cross collar 6 to lock, the locating slot 61 in collar can be driven torsion but not influence drive sleeve with the interior tab cooperation in drive sleeve 5
Axially activity, therefore the drive sleeve and rotating ring synchronous axial system are driven by collar in pump shaft rotation process, so as to avoid
Rubber bellows are twisted off, and ensure the validity of sealing.
In the present embodiment, the location structure includes being molded over the locating notch 31 of the outer peripheral edge of rotating ring 3, is molded over
It is suitable to the positioning convex 55 being engaged with the locating notch 31 and the pressure being molded in the drive sleeve 5 in the drive sleeve 5
Pin 56, the locating notch 31 are engaged circumferentially positioned to the rotating ring 3 with the positioning convex 55, and the presser feet 56 is crimped on
The rotating ring 3 is limited in the drive sleeve 5 on the rotating ring 3, rotating ring 3 is limited in by the biography by above-mentioned location structure
In dynamic set 5, avoid skidding between rotating ring and drive sleeve 5, ensure sealing effectiveness.
The spring 7 employed in the present embodiment is tower spring, and the big end of the tower spring is sleeved on described some evaginations
On piece 52, the small end of the tower spring is suitable to be socketed with the interference of pump shaft 8, and direct incite somebody to action is interference fitted by small end and the pump shaft 8 of tower spring
Tower spring is fixed on without additional components on pump shaft 8, and spring can guarantee that drive spring is synchronous when pump shaft 8 rotates after being fixed on pump shaft 8
Rotate.
In the present embodiment, the side wall corresponding site of the drive sleeve 5 is inwardly stamped and formed out the positioning convex 55, the pressure
Pin is to form the inside punching press of edge plate body of drive sleeve 5, referring to shown in Fig. 6.
Further, on the rubber stationary seat 1 towards forming annular groove 11 on the end face of the rotating ring 3, the machinery
Sealing is when installing and using, rubber stationary seat 1 expanded outwardly by the outer side edges of annular groove during hydraulic action 11 so as to strengthen with
Pump housing corresponding site close-fitting, so as to enhance sealing effectiveness.
In the present embodiment, back to forming some be arranged concentrically on the end face of the rotating ring 3 on the rubber stationary seat 1
Stabilizer tab loop wire 12, due to the setting of stabilizer tab loop wire 12, when uneven on the mounting surface being affixed on the pump housing with annular stationary seat 1
When, local deform upon of stabilizer tab loop wire 1 plays compensating action, ensures the sealing between mounting surface on rubber stationary seat 1 and the pump housing
Property.
In the present embodiment, the stationary ring 2 is provided with anti-reverse mounting short slot 21, when stationary ring 2 is loaded in rubber stationary seat 1,
Indicating reminders are played a part of in the setting of the anti-reverse mounting short slot 21, avoid stationary ring 2 anti-loaded in rubber stationary seat 1.
In the present embodiment, one end inner side of the rotating ring 3 towards the rubber bellows 4 forms annular breach 32, leads to
The flexible compensation section 41 can be avoided by crossing the setting of annular breach 32, be ground so as to avoid rotating ring 3 from being contacted with flexible compensation section 41
Damage rubber bellows 4.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.And these
The obvious changes or variations that the connotation for belonging to of the invention is extended out still falls within protection scope of the present invention.
Claims (8)
1. a kind of single mechanical end face seal, including rubber stationary seat (1), stationary ring (2), rotating ring (3), rubber bellows (4), transmission
(5), collar (6) and spring (7) are covered, in the rubber stationary seat (1), the drive sleeve (5) is provided with the stationary ring (2)
The rotating ring (3) is fixed on the location structure in drive sleeve (5), the front end of the rubber bellows (4) passes through the rotating ring
(3) it is pressed in the drive sleeve (5), rear end periphery wall of collar (6) interference in the rubber bellows (4)
On, the rear ends of the rubber bellows (4) has a sets of holes (41) with pump shaft (8) interference fit, in the rubber bellows (4)
Portion has aduncate flexible compensation section (41), and the rear end of the drive sleeve (5) is set around the rubber bellows (4) interval
Some interior lugs (51) and some outer lugs (52) are equipped with, the interior lug (51) is with the outer lug (52) along the transmission
Set (5) is extended axially rearward, and described some interior lugs (51) are on the first circumference (53), described some outer lugs (52)
On the second circumference (54), the center of first circumference (53) and second circumference (54) is in the transmission
On the axis for covering (5), and the diameter of second circumference (54) is more than the diameter of first circumference (53), the collar
(6) the circumferentially spaced locating slot (61) being provided with interior lug (51) equal amount of front periphery, described locating slot (61)
Correspond and coordinate with described interior lug (51), one end of the spring (7) is sleeved on described some outer lugs (52)
And offseted with the drive sleeve (5), the spring (7) to the drive sleeve (5) apply elastic acting force make the rotating ring (3) with
The stationary ring (2) is in close contact.
2. single mechanical end face seal according to claim 1, it is characterised in that the location structure is described including being molded over
The locating notch (31) of rotating ring (3) outer peripheral edge, it is molded in the drive sleeve (5) suitable for being engaged with the locating notch (31)
Positioning convex (55) and the presser feet (56) that is molded in the drive sleeve (5), the locating notch (31) and the convex
Play (55) and be engaged circumferentially positioned to the rotating ring (3), the presser feet (56) is crimped on the rotating ring on the rotating ring (3)
(3) it is limited in the drive sleeve (5).
3. single mechanical end face seal according to claim 2, it is characterised in that the spring (7) is tower spring, the tower spring
Big end be sleeved on described some outer lugs (52), the small end of the tower spring is suitable to and pump shaft (8) interference is socketed.
4. single mechanical end face seal according to claim 2, it is characterised in that the corresponding portion of side wall of the drive sleeve (5)
Position is inwardly stamped and formed out the positioning convex (55).
5. single mechanical end face seal according to any one of claim 1 to 4, it is characterised in that the rubber stationary seat
(1) towards forming annular groove (11) on the end face of the rotating ring (3) on.
6. single mechanical end face seal according to any one of claim 1 to 4, it is characterised in that the rubber stationary seat
(1) back to forming some stabilizer tab loop wires (12) being arranged concentrically on the end face of the rotating ring (3) on.
7. single mechanical end face seal according to any one of claim 1 to 4, it is characterised in that set on the stationary ring (2)
There is anti-reverse mounting short slot (21).
8. single mechanical end face seal according to any one of claim 1 to 4, it is characterised in that rotating ring (3) direction
Annular breach (32) is formed on the inside of one end of the rubber bellows (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711163612.2A CN107762964A (en) | 2017-11-21 | 2017-11-21 | Single mechanical end face seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711163612.2A CN107762964A (en) | 2017-11-21 | 2017-11-21 | Single mechanical end face seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107762964A true CN107762964A (en) | 2018-03-06 |
Family
ID=61279953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711163612.2A Pending CN107762964A (en) | 2017-11-21 | 2017-11-21 | Single mechanical end face seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107762964A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278368A (en) * | 2018-03-20 | 2018-07-13 | 浙江天鹰机械密封件有限公司 | Mechanical seal |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH051073U (en) * | 1991-06-21 | 1993-01-08 | イーグル工業株式会社 | Mechanical seal using rubber bellows |
| JPH0716077U (en) * | 1993-08-30 | 1995-03-17 | 株式会社酉島製作所 | mechanical seal |
| WO2007124950A1 (en) * | 2006-05-02 | 2007-11-08 | Burgmann Industries Gmbh & Co. Kg | Slip ring seal arrangement with a bellows seal |
| JP2010019084A (en) * | 2008-07-08 | 2010-01-28 | Tsurumi Mfg Co Ltd | Shaft sealing device |
| CN201554691U (en) * | 2009-10-15 | 2010-08-18 | 骆建国 | Mechanical sealing element for domestic pump |
| CN202251961U (en) * | 2011-09-20 | 2012-05-30 | 宁波精科机械密封件制造有限公司 | Mechanical sealing device |
| CN202251062U (en) * | 2011-09-09 | 2012-05-30 | 宁波精科机械密封件制造有限公司 | Mechanical rotary sealing device of horizontal centrifugal pump |
| CN207583678U (en) * | 2017-11-21 | 2018-07-06 | 浙江天鹰机械密封件有限公司 | Single mechanical end face seal |
-
2017
- 2017-11-21 CN CN201711163612.2A patent/CN107762964A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH051073U (en) * | 1991-06-21 | 1993-01-08 | イーグル工業株式会社 | Mechanical seal using rubber bellows |
| JPH0716077U (en) * | 1993-08-30 | 1995-03-17 | 株式会社酉島製作所 | mechanical seal |
| WO2007124950A1 (en) * | 2006-05-02 | 2007-11-08 | Burgmann Industries Gmbh & Co. Kg | Slip ring seal arrangement with a bellows seal |
| JP2010019084A (en) * | 2008-07-08 | 2010-01-28 | Tsurumi Mfg Co Ltd | Shaft sealing device |
| CN201554691U (en) * | 2009-10-15 | 2010-08-18 | 骆建国 | Mechanical sealing element for domestic pump |
| CN202251062U (en) * | 2011-09-09 | 2012-05-30 | 宁波精科机械密封件制造有限公司 | Mechanical rotary sealing device of horizontal centrifugal pump |
| CN202251961U (en) * | 2011-09-20 | 2012-05-30 | 宁波精科机械密封件制造有限公司 | Mechanical sealing device |
| CN207583678U (en) * | 2017-11-21 | 2018-07-06 | 浙江天鹰机械密封件有限公司 | Single mechanical end face seal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278368A (en) * | 2018-03-20 | 2018-07-13 | 浙江天鹰机械密封件有限公司 | Mechanical seal |
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