CN204239936U - Long lifetime high sealing swivel joint - Google Patents
Long lifetime high sealing swivel joint Download PDFInfo
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- CN204239936U CN204239936U CN201420571659.8U CN201420571659U CN204239936U CN 204239936 U CN204239936 U CN 204239936U CN 201420571659 U CN201420571659 U CN 201420571659U CN 204239936 U CN204239936 U CN 204239936U
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- rotating shaft
- hollow rotating
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Abstract
The utility model relates to swivel joint technical field, disclose a kind of high leak tightness swivel joint, comprise hollow rotating shaft, axle sleeve, one end of axle sleeve is provided with end cap, the other end of axle sleeve is provided with connecting head, bearing is provided with between hollow rotating shaft and axle sleeve, also backbone sealing ring is provided with between hollow rotating shaft and axle sleeve, backbone sealing ring comprises skeleton, seal ring body, the inner ring of seal ring body extends to form the parallel seal lip of twice, the outer side surface inner ring of two seals lip is provided with sealing cone, the outer wall of hollow rotating shaft is provided with circular groove, two sides of circular groove are the conical surface of fitting with sealing cone, gap is formed between the inner ring of seal lip and the bottom land of circular groove, the outer ring sleeve of seal lip is provided with spring pressure ring, some reeds are evenly provided with between two seals lip inner side surface, annular filter screen is provided with outside the end of hollow rotating shaft.Therefore, the utility model has wear automatic-compensation, good seal performance, the beneficial effect of long service life.
Description
Technical field
The utility model relates to swivel joint technical field, particularly relates to a kind of long lifetime high sealing swivel joint.
Background technique
At present, in industries such as metallurgy, boats and ships lifting, chemical industry, pharmacy, in the rigid conduit of conveying high-pressure fluid, need between two pipelines swivel joint is installed in relative rotation, swivel joint generally comprises hollow shaft, axle sleeve, a connecting head, and connecting head is connected with fixing pipeline, and hollow shaft is connected with the pipeline of rotation, hollow shaft rotates in axle sleeve, thus realizes the connection of rotated pipe and fixing tube.Due to hollow shaft high speed rotating, high-pressure liquid is carried in hollow shaft, leak to prevent fluid between hollow shaft and axle sleeve, between hollow shaft periphery and axle sleeve, seal ring is installed, hollow shaft high speed rotating, seal ring is easy to wearing and tearing, and rotated pipe in rotation process to bringing vibration, thus cause there is axial runout between hollow shaft and axle sleeve, this can aggravate again the wearing and tearing of seal ring, so just cause will changing swivel joint at set intervals or changing seal ring, and long-time through-flow body in general high voltage fluid line, changing swivel joint just must stop fluid flowing, various equipment all needs to suspend, therefore the sealing between hollow shaft and axle sleeve how is improved, slow down ring wear, improve the Focal point and difficult point that swivel joint is swivel design working life, when sealing surface along with abradable seal effect reduces, when there is small gap, the granular solids impurity in fluid easily enters in this gap, thus can accelerate ring wear, and gap also constantly increases, and causes oil liquid leakage.
Such as: Chinese patent Authorization Notice No.: CN201288908Y, authorized announcement date on August 12nd, 2009, disclose a kind of rigid rotating joint, comprise the static hollow casing that is connected with nested structure with quill shaft and relatively rotate hollow casing, cover inwall has step, there is lip backbone sealing ring this step end face and quill shaft end face joint, and wherein support frame used is cylindrically coiled spring ring, and cylindrically coiled spring ring is by banded reed coiling.When lip backbone sealing ring inner ring weares and teares, by the circumferential pressure of cylindrically coiled spring ring, the inner ring of lip backbone sealing ring is fitted with hollow rotating shaft outer side wall all the time, thus remains sealing, add the working life of seal ring.The inner ring lip wear extent that the seal ring of this kind of structure allows is larger, if seal failure after conventional seals circle inner ring wearing and tearing 1mm, even and if lip backbone sealing ring inner ring lip wearing and tearing 3mm also can keep fitting with hollow rotating shaft outer wall, but just bring new problem like this, because seal ring inner ring lip wear extent increases to a certain degree, interior circumference and the outer circumference difference of hollow rotating shaft can be caused to increase, and in order to ensure ring wear resistant, the seal ring hardness that swivel joint inner seal ring its rigidity connects far above static state, therefore seal ring its inner ring local under the compression of cylindrically coiled spring ring brute force can be caused when girth difference is larger to crease easily, thus cause oil liquid leakage, and under the effect of spring shackle, there is certain torsion during the wearing and tearing of some backbone sealing ring lip inner ring, so just can overcome inner ring wrinkling, but result also in the skew of sealing surface, thus cause sealing to decline.
Model utility content
The utility model is in order to overcome in swivel joint of the prior art poor sealing performance between hollow rotating shaft and axle sleeve, solid impurity in fluid easily enters in sealing surface, accelerate ring wear, cause the deficiency of oil liquid leakage, provide good seal performance between a kind of hollow rotating shaft and axle sleeve, can automatic compensation sealing during ring wear, can also prevent the solid impurity in fluid from entering long lifetime swivel joint in sealing surface simultaneously.
To achieve these goals, the utility model adopts following technological scheme:
A kind of long lifetime high sealing swivel joint, comprise hollow rotating shaft, axle sleeve, one end of axle sleeve is provided with end cap, the other end of axle sleeve is provided with connecting head, bearing is provided with between described hollow rotating shaft and axle sleeve, also backbone sealing ring is provided with between described hollow rotating shaft and axle sleeve, described backbone sealing ring comprises skeleton, seal ring body, the inner ring of described seal ring body extends to form the parallel seal lip of twice, the outer side surface inner ring of two seals lip is provided with sealing cone, the outer wall of described hollow rotating shaft is provided with circular groove, two sides of described circular groove are the conical surface of fitting with sealing cone, gap is formed between the inner ring of seal lip and the bottom land of circular groove, the outer ring sleeve of seal lip is provided with spring pressure ring, some reeds are evenly provided with between two seals lip inner side surface, be provided with annular filter screen outside the end of described hollow rotating shaft, the inner of described connecting head is provided with filter screen connecting groove, and one end of annular filter screen is fixedly connected with outside hollow rotating shaft end, and the other end of annular filter screen stretches in filter screen connecting groove to be formed and is rotationally connected.
The bi-side gluing, sealing of seal lip and hollow rotating shaft circular groove, pass through spring pressure ring, elastic supporting member for supporting optical member to radial direction, the axial compression of sealing cone simultaneously, along with use, sealing cone constantly weares and teares, sealing cone still can keep and circular groove sidewall gluing, sealing, and sealing contact surface also increases along with wearing and tearing, sealing effect is better; Owing to passing through conical surface seal, even if when therefore wear extent is larger, seal lip also can not be wrinkling, even if hollow rotating shaft rotational vibrations, axial runout, seal lip can produce adaptive deformation fine setting according to the axial runout of rotating shaft under spring pressure ring, elastic supporting member for supporting optical member effect, and remain sealing, therefore this kind of swivel joint overall sealing performance is good, energy automatic compensation sealing during seal lip wearing and tearing, long service life; Center from annular filter screen when fluid in swivel joint flows through is passed, therefore annular filter screen can not increase the circulating resistance of fluid, annular filter screen is the position in order to prevent the solid particle polluter in fluid from entering into seal lip and sealing cone, thus prevent solid impurity particle from entering the wearing and tearing of aggravation seal lip in sealing cone, improve the working life of backbone sealing ring.
As preferably, two side roof parts of described circular groove extend to form and form sealing bulge loop.Time backbone sealing ring just loads, the sealing cone in seal lip only with circular groove contacts side surfaces, along with the wearing and tearing of seal lip, sealing cone can increase, now the last branch of sealing cone with seal bulge loop and contact, further enhanced leaktightness.
As preferably, two seals lip inner side surface is respectively equipped with support ring, and described reed is V-shaped, and the opening end of reed extends to form junction surface, and described junction surface is connected with bolt between support ring.Support ring can prevent seal lip local compression to be out of shape.
As preferably, the bottom of described reed is provided with pull bar, the outer end of described pull bar is stretched out outside axle sleeve through backbone sealing ring, the outside of described axle sleeve is provided with beacon, the outer end of described pull bar is connected with beacon, when pull bar moves a certain distance to the axle center of axle sleeve, pull bar trigger alert lamp is opened.Along with the wearing and tearing of sealing cone, the opening of reed increases, axially produce displacement towards axle sleeve bottom reed, when displacement reaches a certain amount of time, now think that seal lip has reached inefficacy edge (namely further wearing and tearing can cause seal failure), pull bar synchronously can produce a displacement identical with reed, thus the switch in trigger alert lamp, beacon is opened, thus reminds maintenance man, backbone sealing ring will lose efficacy, and need to change immediately; And common swivel joint only has when occurring just can change or often change at regular intervals when leaking, leakage is changed and is easily caused the accident, and because installation environment is different, wearing-in period is also different, and periodic replacement easily causes waste.
As preferably, described axle sleeve outer side wall is provided with groove, and beacon is arranged in groove by fitting seat, is also provided with lever in fitting seat, and the outer end, long limit of lever is connected with beacon switch, and minor face and the pull bar of lever are hinged.Pull bar be displaced through lever amplification, lever the other end pressure beacon switch.
As preferably, the minor face of described lever is arranged with telescopic cover, and outer end and the pull bar of described telescopic cover are hinged, and the outside of described pull bar is arranged with guide sleeve.Guide sleeve ensures that pull bar pulls resistance little, and telescopic cover prevents lever rotation from causing pull bar and surrounding to be interfered.
As preferably, described annular filter screen is round platform planar, its miner diameter end is fixedly connected with hollow rotating shaft by connecting ring, carbon seal ring is provided with in described filter screen connecting groove, being provided with elastic seal ring outside the bigger diameter end of described annular filter screen, fits with the inner ring of carbon seal ring and contacts in the outside of elastic seal ring.Frustoconic shape support structure intensity is large, and not fragile, annular filter screen, by elastic seal ring and ink seal ring fitted seal, prevents the solid particle polluter in fluid from entering sealing cone place from being rotationally connected of annular filter screen.
As preferably, inside the bigger diameter end of described annular filter screen, be along the circumferential direction evenly fixed with some Heavy balls.Because the connection between connecting head and axle sleeve exists assembly error, when both coaxiality errors are larger, can cause there is gap between elastic seal ring and carbon seal ring, and in this structure, Heavy ball is along with annular filter screen generation centrifugal force when rotation, this centrifugal force makes elastic seal ring compress carbon seal ring, thus can overcome the gap that assembly error brings when rotational structure rotates.
Therefore, the utility model has following beneficial effect: (1) seal lip can compensate sealing, long service life automatically along with wearing and tearing; (2) annular filter screen can effectively prevent the solid particle polluter in fluid from entering in sealing cone, lowers the wearing and tearing of seal lip, improves working life; (3) along with wearing and tearing, sealing surface increases gradually, further enhanced leaktightness; (4) when the wear extent of seal lip reaches inefficacy edge, warning is sent by beacon, prompting changing.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is A place partial enlargement structural representation in Fig. 1.
Fig. 3 is B place partial enlargement structural representation in Fig. 1.
Fig. 4 is the structural representation of annular filter screen.
In figure: hollow rotating shaft 1 axle sleeve 2 end cap 3 connecting head 4 bearing 5 backbone sealing ring 6 circular groove 7 seals bulge loop 8 reed 9 pull bar 10 beacon 11 fitting seat 12 lever 13 telescopic cover 14 guide sleeve 15 skeleton 60 seal ring body 61 seal lip 610 sealing cone 611 spring pressure ring 612 support ring 613 junction surface 90 annular filter screen 100 filter screen connecting groove 101 connecting ring 102 carbon seal ring 103 elastic seal ring 104 Heavy ball 105.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described:
A kind of long lifetime high sealing swivel joint as shown in Figure 1, comprise hollow rotating shaft 1, axle sleeve 2, one end of axle sleeve is provided with end cap 3, the other end of axle sleeve is provided with connecting head 4, connecting head is connected with axle sleeve bolt, the junction surface of connecting head and axle sleeve is provided with seal washer, bearing 5 is provided with between hollow rotating shaft and axle sleeve, backbone sealing ring 6 is also provided with between hollow rotating shaft 1 and axle sleeve 2, backbone sealing ring comprises skeleton 60, seal ring body 61, the inner ring of seal ring body 61 extends to form the parallel seal lip of twice 610, the outer side surface inner ring of two seals lip is provided with sealing cone 611, the outer wall of hollow rotating shaft 1 is provided with circular groove 7, two sides of circular groove are the conical surface of fitting with sealing cone, two side roof parts of circular groove 7 extend to form and form sealing bulge loop 8, gap is formed between the inner ring of seal lip 610 and the bottom land of circular groove, the outer ring sleeve of seal lip 610 is provided with spring pressure ring 612, some reeds 9 are evenly provided with between two seals lip inner side surface.
As shown in Figure 3 and Figure 4, annular filter screen 100 is provided with outside the end of hollow rotating shaft 1, the inner of connecting head is provided with filter screen connecting groove 101, annular filter screen 100 is in round platform planar, its miner diameter end is fixedly connected with hollow rotating shaft by connecting ring 102, connecting ring and hollow rotating shaft are welded to connect, carbon seal ring 103 is provided with in filter screen connecting groove 101, elastic seal ring 104 is provided with outside the bigger diameter end of annular filter screen 100, fit with the inner ring of carbon seal ring and contact in the outside of elastic seal ring, some Heavy balls 105 are along the circumferential direction evenly fixed with inside the bigger diameter end of annular filter screen 100.When hollow rotating shaft rotates, annular filter screen is synchronous axial system also, thus drives Heavy ball to rotate, and the centrifugal force produced when Heavy ball rotates is pressed on elastic seal ring, thus makes elastic seal ring and carbon seal ring gluing, sealing; Annular filter screen can effectively prevent the solid particle polluter in fluid from entering in sealing cone, lowers the wearing and tearing of seal lip, improves working life.
As shown in Figure 2, two seals lip inner side surface is respectively equipped with support ring 613, reed is V-shaped, the opening end of reed extends to form junction surface 90, between junction surface with support ring, bolt is connected, the bottom of reed 9 is provided with pull bar 10, the outer end of pull bar is stretched out outside axle sleeve through backbone sealing ring, axle sleeve 2 outer side wall is provided with groove, beacon 11 is arranged in groove by fitting seat 12, lever 13 is also provided with in fitting seat, the outer end, long limit of lever is connected with beacon switch, the minor face of lever 13 is arranged with telescopic cover 14, outer end and the pull bar of telescopic cover are hinged, the outside of pull bar is arranged with guide sleeve 15.
The bi-side gluing, sealing of seal lip 610 and circular groove on hollow rotating shaft 1, simultaneously by spring pressure ring, elastic supporting member for supporting optical member is to the radial direction of sealing cone, axial compression, along with use, sealing cone constantly weares and teares, sealing cone still can keep and circular groove sidewall gluing, sealing, and sealing contact surface also increases along with wearing and tearing, sealing effect is better, owing to passing through conical surface seal, even if when therefore wear extent is larger, seal lip also can not be wrinkling, when hollow rotating shaft rotational vibrations, during axial runout, seal lip can at spring pressure ring, adaptive deformation fine setting is produced according to the axial runout of rotating shaft under elastic supporting member for supporting optical member effect, remain sealing, therefore this kind of swivel joint overall sealing performance is good, energy automatic compensation sealing during seal lip wearing and tearing, long service life, along with the wearing and tearing of sealing cone, the opening of reed increases, axially displacement is produced towards axle sleeve bottom reed, when displacement reaches a certain amount of time, now think that seal lip has reached inefficacy edge (namely further wearing and tearing can cause seal failure), pull bar synchronously can produce a displacement identical with reed, the displacement of pull bar is after the amplification of lever, switch under the side pressure of lever long limit in beacon, beacon is opened, thus remind maintenance man, backbone sealing ring will lose efficacy, and need to change immediately, and common swivel joint only has when occurring just can change or often change at regular intervals when leaking, leakage is changed and is easily caused the accident, and because installation environment is different, wearing-in period is also different, and periodic replacement easily causes waste.Therefore, the utility model has following beneficial effect: (1) seal lip can compensate sealing, long service life automatically along with wearing and tearing; (2) annular filter screen can effectively prevent the solid particle polluter in fluid from entering in sealing cone, lowers the wearing and tearing of seal lip, improves working life; (3) along with wearing and tearing, sealing surface increases gradually, further enhanced leaktightness; (4) when the wear extent of seal lip reaches inefficacy edge, warning is sent by beacon, prompting changing.
Claims (8)
1. a long lifetime high sealing swivel joint, comprise hollow rotating shaft (1), axle sleeve (2), one end of axle sleeve is provided with end cap (3), the other end of axle sleeve is provided with connecting head (4), bearing (5) is provided with between described hollow rotating shaft and axle sleeve, it is characterized in that, backbone sealing ring (6) is also provided with between described hollow rotating shaft (1) and axle sleeve (2), described backbone sealing ring comprises skeleton (60), seal ring body (61), the inner ring of described seal ring body (61) extends to form the parallel seal lip of twice (610), the outer side surface inner ring of two seals lip is provided with sealing cone (611), the outer wall of described hollow rotating shaft (1) is provided with circular groove (7), two sides of described circular groove are the conical surface of fitting with sealing cone, gap is formed between the inner ring of seal lip (610) and the bottom land of circular groove, the outer ring sleeve of seal lip (610) is provided with spring pressure ring (612), reed (9) is evenly provided with between two seals lip inner side surface, annular filter screen (100) is provided with outside the end of described hollow rotating shaft (1), the inner of described connecting head is provided with filter screen connecting groove (101), one end of annular filter screen is fixedly connected with outside hollow rotating shaft end, and the other end of annular filter screen stretches in filter screen connecting groove to be formed and is rotationally connected.
2. long lifetime high sealing swivel joint according to claim 1, is characterized in that, two side roof parts of described circular groove (7) extend to form and form sealing bulge loop (8).
3. long lifetime high sealing swivel joint according to claim 1, it is characterized in that, two seals lip inner side surface is respectively equipped with support ring (613), and described reed is V-shaped, the opening end of reed extends to form junction surface (90), and described junction surface is connected with bolt between support ring.
4. long lifetime high sealing swivel joint according to claim 3, it is characterized in that, the bottom of described reed (9) is provided with pull bar (10), the outer end of described pull bar is stretched out outside axle sleeve through backbone sealing ring, the outside of described axle sleeve (2) is provided with beacon (11), the outer end of described pull bar is connected with beacon, and when pull bar moves a certain distance to the axle center of axle sleeve, pull bar trigger alert lamp is opened.
5. long lifetime high sealing swivel joint according to claim 4, it is characterized in that, described axle sleeve (2) outer side wall is provided with groove, beacon is arranged in groove by fitting seat (12), lever (13) is also provided with in fitting seat, the outer end, long limit of lever is connected with beacon switch, and minor face and the pull bar of lever are hinged.
6. long lifetime high sealing swivel joint according to claim 5, is characterized in that, the minor face of described lever (13) is arranged with telescopic cover (14), and outer end and the pull bar of described telescopic cover are hinged, and the outside of described pull bar is arranged with guide sleeve (15).
7. the long lifetime high sealing swivel joint according to claim 1 or 2 or 3, it is characterized in that, described annular filter screen (100) is in round platform planar, its miner diameter end is fixedly connected with hollow rotating shaft by connecting ring (102), carbon seal ring (103) is provided with in described filter screen connecting groove, being provided with elastic seal ring (104) outside the bigger diameter end of described annular filter screen, fits with the inner ring of carbon seal ring and contacts in the outside of elastic seal ring.
8. long lifetime high sealing swivel joint according to claim 7, is characterized in that, is along the circumferential direction evenly fixed with some Heavy balls (105) inside the bigger diameter end of described annular filter screen (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420571659.8U CN204239936U (en) | 2014-09-30 | 2014-09-30 | Long lifetime high sealing swivel joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420571659.8U CN204239936U (en) | 2014-09-30 | 2014-09-30 | Long lifetime high sealing swivel joint |
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| CN204239936U true CN204239936U (en) | 2015-04-01 |
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| CN201420571659.8U Active CN204239936U (en) | 2014-09-30 | 2014-09-30 | Long lifetime high sealing swivel joint |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358951A (en) * | 2014-09-30 | 2015-02-18 | 杭州优能特旋转接头制造厂 | Long-life rotary joint |
| CN105485450A (en) * | 2015-10-15 | 2016-04-13 | 常州市鹰皇冠进出口有限公司 | High-pressure rotating joint for diesel engine |
| CN107387456A (en) * | 2017-09-04 | 2017-11-24 | 河北兴临水泵有限公司 | Water pump gland |
-
2014
- 2014-09-30 CN CN201420571659.8U patent/CN204239936U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358951A (en) * | 2014-09-30 | 2015-02-18 | 杭州优能特旋转接头制造厂 | Long-life rotary joint |
| CN105485450A (en) * | 2015-10-15 | 2016-04-13 | 常州市鹰皇冠进出口有限公司 | High-pressure rotating joint for diesel engine |
| CN107387456A (en) * | 2017-09-04 | 2017-11-24 | 河北兴临水泵有限公司 | Water pump gland |
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