CN206130097U - Bi -polar face rubber bellow mechanical seal device - Google Patents
Bi -polar face rubber bellow mechanical seal device Download PDFInfo
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- CN206130097U CN206130097U CN201621163118.7U CN201621163118U CN206130097U CN 206130097 U CN206130097 U CN 206130097U CN 201621163118 U CN201621163118 U CN 201621163118U CN 206130097 U CN206130097 U CN 206130097U
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- rubber
- rubber bellows
- stationary ring
- mechanical seal
- face
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Abstract
The utility model discloses a bi -polar face rubber bellow mechanical seal device, include: two stationary rings, two swivel beckets, rubber bellow and elastic limit mechanism, two stationary rings set up respectively at the both ends of pump body opening part, are equipped with spacing part of stationary ring circumference and the spacing part of stationary ring axial on the pump body, and the junction of the outer peripheral face of two stationary rings and the inner wall of pump body opening part all is equipped with the sealing washer, be equipped with the cavity in the pump body, one end that two stationary rings are close to the cavity center respectively with the path end laminating of two swivel beckets, the big footpath end of two swivel beckets all with rubber bellow's one end interference fit, rubber bellow and rotary shaft seal laminating, elastic limit mechanism overlap and establish on rubber bellow, and both ends are all to by on the side end face at rubber bellow. The utility model discloses can seal the both ends opening part of the pump body, can prevent when negative pressure appears in the intracavity that the stationary ring breaks away from the stop pin.
Description
Technical field
This utility model is related to a kind of technical field of mechanical, in particular to a kind of Double End rubber bellows
Mechanically-sealing apparatus.
Background technology
Mechanical seal is widely used in pump, reactor, compressor, hydraulic drive and the rotation of other similar slewings
The sealing of axle.The safe operation that the sealing effectiveness of mechanically-sealing apparatus treats water-tight equipment is particularly significant.
Now the operating mode of most rotary apparatuss is more severe, because friction produces certain heat when rotary shaft rotates,
The medium temperature of device interior is raised after a period of time, the different elevated differences of medium and temperature, and rotary shaft is held when rotating
Easily shake, need mechanically-sealing apparatus that there is preferable sealing property.
Mechanically-sealing apparatus are commonly applied to the sealing of pump, when pump is during start-stop, it may appear that the import clogging of pump,
Due to pump inlet blocking, when making that negative pressure state is presented in cavity, or centrifugal pump is evacuated suddenly, when in cavity in negative pressure state,
Under atmospheric pressure, stationary ring is in axial direction mobile to cavity middle part together with swivel becket, departs from stationary ring for stationary ring
Stop pin, and be rotated further under the drive of the swivel becket of high speed rotation, when stopping is evacuated, stationary ring is in spring force and medium
In the presence of, to origin-location movement, but the position engaged with stop pin due to stationary ring is to go to other positions, it is impossible to prevent
Ship and resell on another market cooperation, by stationary ring top into inclined position, swivel becket cannot fit stop pin with stationary ring, cause that liquid is substantial amounts of to be let out
Leakage.
Utility model content
This utility model is intended to solve one of above-mentioned technical problem to a certain extent.
In view of this, this utility model provides a kind of Double End mechanical seal device for rubber bellows, and the device is to pump
Sealed at the both ends open of body, can prevent stationary ring from departing from stop pin when negative pressure state occurs in intracavity.
To solve above-mentioned technical problem, this utility model provides a kind of Double End mechanical seal device for rubber bellows, bag
Include two stationary rings, two swivel beckets, rubber bellows and elastic spacing mechanisms, described two stationary rings, described two rotations
Ring, the rubber bellows and the elastic spacing mechanism are set in the rotary shaft being provided with the pump housing to be sealed, described in two
Stationary ring is separately positioned at the both ends open of the pump housing, and the pump housing is provided with stationary ring circumference limiting component and stationary ring
The junction of the inwall at axial limiting part, the outer peripheral face of two stationary rings and the pump housing opening is equipped with sealing
Circle, is provided with cavity in the pump housing, two stationary rings near one end of the chamber central respectively with two rotations
The miner diameter end laminating of ring, one end interference fit of the bigger diameter end of the swivel becket and the rubber bellows, the rubber corrugated
Pipe is fitted with the rotation axis seal, and the elastic spacing mechanism is set on the rubber bellows, and two ends are resisted against
On the side end face of the rubber bellows.
Further, the stationary ring axial limiting part includes baffle plate, and the baffle plate is perpendicular to the axial direction of the rotary shaft
Direction is arranged, and one end is fixedly connected on the side wall of the pump housing, and the other end extends to the stationary ring near the swivel becket
End face and fit with it.
Further, the stationary ring circumference limiting component is stop pin, and the stop pin is along the axial direction side of the rotary shaft
To setting, one end is located in the stationary ring, and the other end is located in the side wall of the pump housing.
Further, the rubber bellows include horizontal rubber segments and vertical rubber segments, the vertical rubber segments with it is described
Horizontal rubber segments are integrally formed, and the horizontal rubber segments are arranged along the axial direction of the rotary shaft.
Further, the elastic spacing mechanism includes spring and is separately positioned on the metal shell of the both ends of the spring, institute
State the middle part that spring is arranged on the cavity.
Further, the both ends open of the metal shell, cross section is stairstepping, including the first of head and the tail connection successively
Horizontal segment, the first vertical section, the second horizontal segment and the second vertical section, the first level section is parallel with second horizontal segment
Arrange in the axial direction of the rotary shaft, the first level section is relative to second horizontal segment closer to the rotation
Axle, first vertical section is parallel with second vertical section and is each perpendicular to the first level section.
Further, the spring housing is on the outer peripheral face of the first level section, and the two ends of the spring are resisted against described
On end face of first vertical section away from the swivel becket.
Further, described rubber bellows one end and the swivel becket bigger diameter end are spacing, be fastened on first vertical section,
In the groove that second horizontal segment and second vertical section are surrounded, the end face of the rubber bellows is resisted against described first
On the end face of the close swivel becket of vertical section, it is vertical that the swivel becket bigger diameter end is resisted against described second near the end face of stationary ring
On end face of the section away from the stationary ring.
Further, it is arranged with extruding steel ring on the outer peripheral face of the horizontal rubber segments.
Further, the end of the horizontal rubber segments is provided with the limit for preventing the extruding steel ring from departing from the horizontal rubber segments
Position convex shoulder.
It is of the present utility model to have technical effect that：According to a kind of Double End rubber bellows mechanical seal of the present utility model
Device, the device is equipped with stationary ring at the two ends of cavity, by sealing ring and the port of the pump housing between stationary ring and cavity
Inner wall sealing；The device is provided with rubber bellows, and rubber bellows coordinate with rotation axis seal, is capable of achieving inside cavity with rotation
The sealing in gap between axle；And rubber bellows rotate with the rotation of rotary shaft, rubber bellows then drive swivel becket to revolve
Turn, elastic spacing mechanism elastic force effect under swivel becket end face and stationary ring end face laminating, realize swivel becket with it is static
Sealing between ring, in sum, the port of the pump housing fully achieves sealing, and the medium in cavity is not revealed.
Stationary ring circumference limiting component can be such that stationary ring does not rotate with the rotation of rotary shaft, stationary ring axial limiting part
Stationary ring can be made not separate with the port of the pump housing in the case where cavity internal pressure is less than ambient atmosphere pressure condition, it is ensured that equipment runs
Safety, reliability and stationarity.
Description of the drawings
Fig. 1 is a kind of totality of the Double End mechanical seal device for rubber bellows according to this utility model one embodiment
Structural representation；
1- stationary rings；2- swivel beckets；3- rubber bellows；4- springs；5- metal shells；The Sealing shield rings of 6- first；7-
Two Sealing shield rings；8- cavitys；9- inlets；10- baffle plates；11- stationary ring axial limiting parts；12- stop pins；13- screws；
14- extrudes steel ring；The 15- pump housings；20- rotary shafts；21- swivel becket bigger diameter ends；22- swivel becket miner diameter ends；The horizontal rubber segments of 31-；
The vertical rubber segments of 32-；The spacing convex shoulders of 33-；51- first level sections；The vertical sections of 52- first；The horizontal segments of 53- second；54- second is erected
Straight section；55- grooves.
Specific embodiment
Below in conjunction with the accompanying drawings the utility model is described in further detail with specific embodiment, so that those skilled in the art
This utility model can be better understood from and can be practiced, but illustrated embodiment is not as to restriction of the present utility model.
As shown in figure 1, this utility model provides a kind of Double End mechanical seal device for rubber bellows, including two static
Ring 1, two swivel beckets 2, rubber bellows 3 and elastic spacing mechanisms, two stationary rings 1, two swivel beckets 2, rubber bellows 3
It is set in the rotary shaft 20 being provided with the pump housing to be sealed 15 with elastic spacing mechanism, two stationary rings 1 are separately positioned on the pump housing
At 15 both ends open, the pump housing 15 is provided with stationary ring circumference limiting component and stationary ring axial limiting part 11, and two static
The junction of the inwall at the outer peripheral face and the opening of the pump housing 15 of ring 1 is equipped with sealing ring, the pump housing 15 and is provided with cavity 8, and two
Individual stationary ring 1 is fitted respectively near the one end at the center of cavity 8 with the miner diameter end of two swivel beckets 2, swivel becket bigger diameter end 21 and rubber
One end interference fit of glue corrugated tube 3, rubber bellows 3 and the palette of rotary shaft 20, elastic spacing mechanism is set in rubber
On corrugated tube 3, and two ends are resisted against on the side end face of rubber bellows 3.
According to a kind of Double End mechanical seal device for rubber bellows of the present utility model, the device is at the two ends of the pump housing 15
Stationary ring 1 is equipped with opening, by sealing ring and the inner wall sealing of the two-port of the pump housing 15 between stationary ring 1 and cavity 8；The dress
Rubber bellows 3 are installed, rubber bellows 3 coordinate with the sealing of rotary shaft 20, are capable of achieving between the inside of cavity 8 and rotary shaft 20
The sealing in gap；And rubber bellows 3 rotate with the rotation of rotary shaft 20, rubber bellows 3 then drive swivel becket 2 to revolve
Turn, the end face laminating of the end face of swivel becket 2 and stationary ring 1, realizes stationary ring 1 and turn under the elastic force effect of elastic spacing mechanism
Sealing between rotating ring 2, in sum, the port of the pump housing 15 fully achieves sealing, and the medium in cavity 8 is not revealed.
The circumferential limiting component of stationary ring 1 can be such that stationary ring does not rotate with the rotation of rotary shaft 20, stationary ring axial limiting
Part 11 can be such that the pressure in the cavity 8 of stationary ring 1 less than separating with the port of the pump housing 15 under ambient atmosphere pressure condition, protects
Safety, reliability and stationarity that card equipment runs.
As shown in figure 1, stationary ring axial limiting part 11 includes baffle plate 10, baffle plate 10 is perpendicular to the axial direction side of rotary shaft 20
To setting, one end is fixedly connected on the side wall of the pump housing 15 by screw 13, and the other end extends to stationary ring 1 near swivel becket 2
End face and fit with it, baffle plate 10 can prevent stationary ring 1 from moving along the axial direction of rotary shaft 20, so as to realize stationary ring
The fixation of 1 position, at the opening without departing from the pump housing 15.
Stationary ring circumference limiting component is stop pin 12, and stop pin 12 is arranged along the axial direction of rotary shaft 20, and one end is worn
It is located in stationary ring 1, the other end is located in the side wall of the pump housing 15, stop pin 12 can prevent stationary ring 1 along its circumferential direction
Rotate.
As shown in figure 1, rubber bellows 3 include horizontal rubber segments 31 and vertical rubber segments 32, horizontal rubber segments 31 with it is perpendicular
Straight rubber segments 32 are integrally formed, and horizontal rubber segments 31 are arranged along the axial direction of rotary shaft 20.
As shown in figure 1, elastic spacing mechanism includes spring 4 and is separately positioned on the metal shell 5 at the two ends of spring 4, spring 4
The middle part of cavity 8 is arranged on, metal shell 5 is metal material, and spring 4 is resisted against the end of metal shell 5,5 sets of metal shell
In the vertical rubber segments 32 and swivel becket bigger diameter end 21 of rubber bellows 3, under the elastic force effect of spring 4, metal shell 5 is received
The effect of pressure is pressed on vertical rubber segments 32 and swivel becket 2 on the end face of stationary ring 1, realizes rubber bellows 3, swivel becket
Sealing between 2 and stationary ring 1.
As shown in figure 1, the both ends open of metal shell 5, cross section is stairstepping, including the first of head and the tail connection successively
Horizontal segment 51, the first vertical section 52, the second horizontal segment 53 and the second vertical section 54, first level section 51 is equal with the second horizontal segment 53
Arrange parallel to the axial direction of rotary shaft 20, first level section 51 relative to the second horizontal segment 53 closer to rotary shaft 20, the
One vertical section 52 is parallel with the second vertical section 54 and is each perpendicular to first level section 51, and metal shell 5 adopts rank using cross section
Trapezoidal shape is capable of achieving its supporting role to spring 4 and the extruding to rubber bellows 3 and swivel becket 2, position-limiting action.
As shown in figure 1, spring 4 is enclosed within the outer peripheral face of first level section 51, being capable of achieving spring 4 will not be along perpendicular to first
The direction play of horizontal segment 51, the two ends of spring 4 are resisted against on end face of first vertical section 52 away from swivel becket 2, in spring 4
Under elastic force effect, the spacing two ends in spring 4 of the first vertical section 52 of metal shell 5.
As shown in figure 1, one end (i.e. the vertical rubber segments 32 of rubber bellows 3) and the big footpath of swivel becket of rubber bellows 3
Hold it is 21 spacing, be fastened in the first vertical section 52, the second horizontal segment 53 and second vertical 54 sections grooves 55 for surrounding, be capable of achieving rubber
Sealing between glue corrugated tube 3 and swivel becket 2, the vertical rubber segments 32 that rubber bellows 3 are provided with are supported away from the end face of swivel becket 2
On the end face of the close swivel becket 2 for leaning against the first vertical section 52, swivel becket bigger diameter end 21 is resisted against near the end face of stationary ring 1
On end face of two vertical sections 54 away from stationary ring 1, so as to realize the sealing between swivel becket 2 and stationary ring 1.
The outer peripheral face of horizontal rubber segments 31 is arranged with the extruding steel for making horizontal rubber segments 31 and the palette of rotary shaft 20
Circle 14, horizontal rubber segments 31 have certain elasticity, and extruding steel ring 14 is hard material, in the presence of extruding steel ring 14, water
Flat rubber segments 31 produce certain deformation, so that horizontal rubber segments 31 and the palette of rotary shaft 20, so as to realize cavity 8
Sealing between internal and rotary shaft 20.
The end of horizontal rubber segments 31 is provided with the spacing convex shoulder 33 for preventing extruding the horizontal rubber segments 31 of the disengaging of steel ring 14.
The lower surface of first level section 51 is fitted with the upper surface of extruding steel ring 14, prevents the medium in cavity 8 from flowing into recessed
In groove 55 so that structure is compacter.
According to a kind of Double End mechanical seal device for rubber bellows of the present utility model, its operation principle is as follows：
Double End mechanical seal device for rubber bellows is arranged in the rotary shaft 20 in cavity 8, the two ends of the pump housing 15
Opening, upper end is provided with an inlet 9, and medium is flowed into inside cavity 8 by inlet 9, and Double End rubber bellows mechanical is close
The two ends of seal apparatus are arranged at the both ends open of the pump housing 15；
When rotary shaft 20 rotates, rotary shaft 20 drives rubber bellows 3, swivel becket 2, extruding steel ring 14 and elastic spacing
Mechanism rotates, and stationary ring 1 is motionless relative to rotary shaft 20, and swivel becket 2 rotates relative to stationary ring 1, swivel becket 2 with it is quiet
Only realize the sealing between swivel becket 2 and stationary ring 1 by being brought into close contact in the presence of elastic spacing mechanism between ring 1；
The outer peripheral face of stationary ring 1 is realized sealing with the junction of the opening inwall of the pump housing 15 by sealing ring；
Sealing is realized between rubber bellows 3 and rotary shaft 20 in the presence of extruding steel ring 14；
The realization sealing under the fastening effect of elastic spacing mechanism between rubber bellows 3 and swivel becket 2；
In sum, when rotary shaft 20 rotates, Double End mechanical seal device for rubber bellows of the present utility model can
Realize the sealing function at the gap between the port of the pump housing 15 and rotary shaft 20.
Embodiment described above is only the preferred embodiment lifted to absolutely prove this utility model, this utility model
Protection domain not limited to this.Equivalent substitute or change that those skilled in the art are made on the basis of this utility model
Change, within protection domain of the present utility model.Protection domain of the present utility model is defined by claims.
Claims (10)
1. a kind of Double End mechanical seal device for rubber bellows, it is characterised in that include：Two stationary rings, two swivel beckets,
Rubber bellows and elastic spacing mechanism, described two stationary rings, described two swivel beckets, the rubber bellows and the bullet
Property position-limit mechanism is set in the rotary shaft being provided with the pump housing to be sealed, and two stationary rings are separately positioned on the pump housing
At both ends open, the pump housing is provided with stationary ring circumference limiting component and stationary ring axial limiting part, and two described static
The junction of the inwall at the outer peripheral face of ring and the pump housing opening is equipped with sealing ring, is provided with cavity in the pump housing, two
The stationary ring is fitted respectively near one end of the chamber central with the miner diameter end of two swivel beckets, two rotations
The bigger diameter end of ring with one end interference fit of the rubber bellows, the rubber bellows paste with the rotation axis seal
Close, the elastic spacing mechanism is set on the rubber bellows, and two ends are resisted against the side of the rubber bellows
On face.
2. Double End mechanical seal device for rubber bellows according to claim 1, it is characterised in that the static annulate shaft
Include baffle plate to limiting component, the baffle plate is arranged perpendicular to the axial direction of the rotary shaft, and one end is fixedly connected on described
On the side wall of the pump housing, the other end extends to the stationary ring and fits near the end face of the swivel becket and with it.
3. Double End mechanical seal device for rubber bellows according to claim 1, it is characterised in that the stationary ring week
It is stop pin to limiting component, the stop pin is arranged along the axial direction of the rotary shaft, and one end is located in the stationary ring
Interior, the other end is located in the side wall of the pump housing.
4. Double End mechanical seal device for rubber bellows according to claim 1, it is characterised in that the rubber corrugated
Pipe includes horizontal rubber segments and vertical rubber segments, and the vertical rubber segments are integrally formed with the horizontal rubber segments, the level
Rubber segments are arranged along the axial direction of the rotary shaft.
5. Double End mechanical seal device for rubber bellows according to claim 1, it is characterised in that the elastic spacing
Mechanism includes spring and is separately positioned on the metal shell of the both ends of the spring, and the spring is arranged on the middle part of the cavity.
6. Double End mechanical seal device for rubber bellows according to claim 5, it is characterised in that the metal shell
Both ends open, cross section is stairstepping, including successively head and the tail connection first level section, the first vertical section, the second level
Section and the second vertical section, axial direction of the first level section with second horizontal segment each parallel to the rotary shaft sets
Put, the first level section is relative to second horizontal segment closer to the rotary shaft, first vertical section and described
Two vertical sections are parallel and are each perpendicular to the first level section.
7. Double End mechanical seal device for rubber bellows according to claim 6, it is characterised in that the spring housing exists
On the outer peripheral face of the first level section, the two ends of the spring are resisted against end of first vertical section away from the swivel becket
On face.
8. Double End mechanical seal device for rubber bellows according to claim 6, it is characterised in that the rubber corrugated
One end of pipe and the swivel becket bigger diameter end are spacing, be fastened on first vertical section, second horizontal segment and described second
In the groove that vertical section is surrounded, the end face of the rubber bellows is resisted against the end face of the close swivel becket of first vertical section
On, the swivel becket bigger diameter end is resisted against end face of second vertical section away from the stationary ring near the end face of stationary ring
On.
9. Double End mechanical seal device for rubber bellows according to claim 4, it is characterised in that the horizontal rubber
Extruding steel ring is arranged with the outer peripheral face of section.
10. Double End mechanical seal device for rubber bellows according to claim 9, it is characterised in that the horizontal rubber
The end of glue section is provided with the spacing convex shoulder for preventing the extruding steel ring from departing from the horizontal rubber segments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621163118.7U CN206130097U (en) | 2016-10-25 | 2016-10-25 | Bi -polar face rubber bellow mechanical seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621163118.7U CN206130097U (en) | 2016-10-25 | 2016-10-25 | Bi -polar face rubber bellow mechanical seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206130097U true CN206130097U (en) | 2017-04-26 |
Family
ID=58576559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621163118.7U Active CN206130097U (en) | 2016-10-25 | 2016-10-25 | Bi -polar face rubber bellow mechanical seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206130097U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058467A (en) * | 2018-10-16 | 2018-12-21 | 宁波天工机械密封有限公司 | A kind of corrosion-resisting mechanical seal and installation method |
| CN112672628A (en) * | 2020-12-30 | 2021-04-16 | 西安开容电子技术有限责任公司 | Shielding device of rotating mechanism |
| CN117145972A (en) * | 2023-11-01 | 2023-12-01 | 自贡市川密机械密封件有限公司 | Mechanical sealing device with adjustable sealing pressure |
-
2016
- 2016-10-25 CN CN201621163118.7U patent/CN206130097U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058467A (en) * | 2018-10-16 | 2018-12-21 | 宁波天工机械密封有限公司 | A kind of corrosion-resisting mechanical seal and installation method |
| CN109058467B (en) * | 2018-10-16 | 2023-10-31 | 宁波天工机械密封有限公司 | Corrosion-resistant mechanical seal and installation method |
| CN112672628A (en) * | 2020-12-30 | 2021-04-16 | 西安开容电子技术有限责任公司 | Shielding device of rotating mechanism |
| CN117145972A (en) * | 2023-11-01 | 2023-12-01 | 自贡市川密机械密封件有限公司 | Mechanical sealing device with adjustable sealing pressure |
| CN117145972B (en) * | 2023-11-01 | 2024-01-02 | 自贡市川密机械密封件有限公司 | Mechanical sealing device with adjustable sealing pressure |
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