CN203560080U - Floating type sealing device - Google Patents
Floating type sealing device Download PDFInfo
- Publication number
- CN203560080U CN203560080U CN201320710386.6U CN201320710386U CN203560080U CN 203560080 U CN203560080 U CN 203560080U CN 201320710386 U CN201320710386 U CN 201320710386U CN 203560080 U CN203560080 U CN 203560080U
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- Prior art keywords
- pull rod
- seal ring
- center pull
- spring
- sealing
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Abstract
The utility model discloses a floating type sealing device which comprises a mounting base and a center pull rod, wherein a sealing cavity is formed in the mounting base, and springs are fixedly mounted at the upper end and the lower end of the sealing cavity; and U-shaped hoops are connected onto the end parts of the springs, the springs are in a compressed state, one sealing ring is clamped between one upper U-shaped hoop and one lower U-shaped hoop, and the center pull rod penetrates through the sealing cavity and the sealing rings. The springs are always in the compressed state, and rapid restoration of the sealing rings can be guaranteed after the sealing rings move, so that the extrusion force applied to the sealing rings by the center pull rod in the radial direction can be reduced greatly, the stressing state of the sealing rings is improved, the sealing rings only bear the axial friction force instead of the original resultant force of the axial friction force and the radial extrusion force, accordingly, the abrasion of the sealing rings is reduced, and the service life is prolonged.
Description
Technical field
The utility model relates to seal arrangement, specifically refers to a kind of floating sealing.
Background technique
Drilling pump is as the visual plant of drillng operation, when work, to shaft bottom delivery cycle cleaner for high-pressure drilling fluid, at the bottom of flushing manhole, fractured rock, cooling and lubricating drill bit, and landwaste carried and returns to ground.In current drilling equipment, the drilling pump of use is mainly reciprocating piston pump, and its structure comprises power end and two parts of fluid end.Wherein, power end mainly comprises support assembly, crank assemblby, small gear assembly and cross head assembly etc., it by driving gear and crank connecting by transmission of power to fluid end; Fluid end mainly comprises fluid cylinder, pump head, center pull rod etc., and it is discharged drilling fluid by the to-and-fro motion of piston with certain pressure and flow.And center pull rod is the connection hinge of drilling well pump power end and fluid end, the gear pump in the dynamic end in joint of it and power end provides oil lubricating; By the spray pump of fluid end, to carry out lubrication with clean water cooling with the joint of fluid end.
For fear of the cooling water of fluid end, enter into the oil sump of power end, damage machine oil, common way is exactly to install rubber is set at the root of center pull rod, and seal ring carries out encapsulation process.Because the reciprocatory motion of piston, center pull rod is also being carried out axially reciprocating simultaneously, in the effect that is subject to thrust upwards, make it to produce beating radially, this meeting of beating radially produces larger extruding force to seal ring, the degree of wear of seal ring is strengthened, cause the lifetime of seal ring, affect the working efficiency of drilling pump.
Model utility content
The purpose of this utility model is to provide a kind of floating sealing, reduces the extruding of center pull rod to seal arrangement, extends the working life of seal arrangement.
The purpose of this utility model is achieved through the following technical solutions:
A kind of floating sealing, comprise fitting seat and center pull rod, in described fitting seat, be provided with Seal cage, two ends up and down at Seal cage are all installed with spring, the end of spring is connected with U-shaped anchor ear, spring, in compressive state, is arranged with seal ring between upper and lower two U-shaped anchor ears, and center pull rod runs through Seal cage and passes seal ring.Traditional center pull rod sealing device is also subject to thrust upwards when center pull rod is carried out axially reciprocating, produce beating radially, this meeting of beating radially produces larger extruding force to seal ring, increases the wearing and tearing of seal ring, reduces the working life of seal ring, fitting seat of the present utility model is bolted on the pump housing, in Seal cage in fitting seat, arrange two dorsad opposed seal ring the part contacting between center pull rod and fitting seat is carried out to axial seal, the U-shaped anchor ear of installing under seal ring and spring can make seal ring carry out moving up and down among a small circle with the circular runout of center pull rod, spring is all the time in compressive state, can guarantee that seal ring is at mobile Rapid reset later, therefore greatly reduced the extruding force of the center pull rod that seal ring is subject in radial direction, improved the stress of seal ring, seal ring is had and be originally subject to the reasonable of axial friction and lateral extrusion power, be reduced to and be only subject to axial frictional force, the wearing and tearing of seal ring have been reduced, extended working life.
Also comprise the discharge orifice that is inclined at fitting seat bottom righthand side, described discharge orifice is communicated with Seal cage.The discharge orifice being communicated with Seal cage can occur that seal failure phenomenon provides certain forewarning function after the long-time use of seal ring, is convenient to the seal ring that prompting more renews, and avoids reducing working efficiency.
Described discharge orifice is 15 ° with the angle of inclination that axis becomes of center pull rod.Discharge orifice is non-to be horizontally disposed with, and can be the judgement of the seal ring extent of damage certain data supporting is provided, and when discharge orifice has large quantity of fluid to flow out, illustrates that ring wear is serious, need change in time.
The diameter of described discharge orifice is 5.5 ~ 6 ㎜.The intact degree of seal ring is convenient to observe and monitor in suitable aperture, and diameter is in the scope of 5.5 ~ 6 ㎜, is convenient to the processing of lathe, drilling machine, is conducive to reduce production costs.
Described spring is cylinder-shaped compression spring.Because center pull rod can produce beating radially frequently, thus spring be stretched or frequency when compressed very fast, common spring cannot bear pullling of lower pulling force for a long time, easily fractures or follows the string; Compress Spring is the helical spring bearing to pressure, it is circular that its material section used mostly is, and between the circle of Compress Spring and circle, has certain gap, spring contraction distortion when being subject to external load, store energy of deformation, can guarantee the stability of working in continuous compression, drawing process.
The utility model compared with prior art, has following advantage and beneficial effect:
1, a kind of floating sealing of the utility model, comprise fitting seat and center pull rod, in described fitting seat, be provided with Seal cage, two ends up and down at Seal cage are all installed with spring, the end of spring is connected with U-shaped anchor ear, spring, in compressive state, is arranged with seal ring between upper and lower two U-shaped anchor ears, and center pull rod runs through Seal cage and passes seal ring; Spring is all the time in compressive state, can guarantee that seal ring is at mobile Rapid reset later, therefore greatly reduced the extruding force of the center pull rod that seal ring is subject in radial direction, improved the stress of seal ring, seal ring is had and be originally subject to the reasonable of axial friction and lateral extrusion power, be reduced to and be only subject to axial frictional force, reduced the wearing and tearing of seal ring, extended working life;
2, a kind of floating sealing of the utility model, also comprises the discharge orifice that is inclined at fitting seat bottom righthand side, and described discharge orifice is communicated with Seal cage.The discharge orifice being communicated with Seal cage can occur that seal failure phenomenon provides certain forewarning function after the long-time use of seal ring, is convenient to the seal ring that prompting more renews, and avoids reducing working efficiency;
3, a kind of floating sealing of the utility model, because center pull rod can produce beating radially frequently, so spring be stretched or frequency when compressed very fast, common spring cannot bear pullling of lower pulling force for a long time, easily fractures or follows the string; Compress Spring is the helical spring bearing to pressure, it is circular that its material section used mostly is, and between the circle of Compress Spring and circle, has certain gap, spring contraction distortion when being subject to external load, store energy of deformation, can guarantee the stability of working in continuous compression, drawing process.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide the further understanding to the utility model embodiment, forms the application's a part, does not form the restriction to the utility model embodiment.In the accompanying drawings:
Fig. 1 is the utility model structural representation;
Fig. 2 is the sectional view of A-A;
Mark and corresponding component title in accompanying drawing:
1-fitting seat, 2-center pull rod, the 3-pump housing, 4-seal ring, 5-U shape anchor ear, 6-spring, 7-discharge orifice.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, exemplary embodiment of the present utility model and explanation thereof are only for explaining the utility model, and conduct is not to restriction of the present utility model.
Embodiment 1
As shown in Figure 1, a kind of floating sealing of the utility model, comprise fitting seat 1 and center pull rod 2, in fitting seat 1, be provided with Seal cage, two ends up and down at Seal cage are all installed with spring 6, and the end of spring 6 is connected with U-shaped anchor ear 5, and spring 6 is in compressive state, between upper and lower two U-shaped anchor ears 5, be arranged with seal ring 4, center pull rod 2 runs through Seal cage and passes seal ring 4.Traditional center pull rod sealing device is also subject to thrust upwards when center pull rod 2 is carried out axially reciprocating, produce beating radially, this meeting of beating radially produce larger extruding force to seal ring 4, increases the wearing and tearing of seal ring 4, reduces the working life of seal ring 4, fitting seat 1 of the present utility model is bolted on the pump housing 3, in Seal cage in fitting seat 1, arrange two dorsad opposed seal ring 4 part contacting between center pull rod 2 and fitting seat 1 is carried out to axial seal, the U-shaped anchor ear 5 of installing seal ring 4 times and spring 6 can make seal ring 4 carry out moving up and down among a small circle with the circular runout of center pull rod 2, spring 6 is all the time in compressive state, can guarantee that seal ring 4 is at mobile Rapid reset later, therefore greatly reduced the extruding force of the center pull rod 2 that seal ring 4 is subject in radial direction, improved the stress of seal ring 4, seal ring 4 is had and be originally subject to the reasonable of axial friction and lateral extrusion power, be reduced to and be only subject to axial frictional force, the wearing and tearing of seal ring 4 have been reduced, extended working life.
As depicted in figs. 1 and 2, a kind of floating sealing of the utility model, also comprises the discharge orifice 7 that is inclined at fitting seat 1 bottom righthand side, and discharge orifice 7 is communicated with Seal cage, discharge orifice 7 is 15 ° with the angle of inclination that axis becomes of center pull rod 2, and the diameter of discharge orifice 7 is 5.5 ~ 6 ㎜.The discharge orifice 7 being communicated with Seal cage can occur that seal failure phenomenon provides certain forewarning function after the long-time use of seal ring 4, is convenient to the seal ring 4 that prompting more renews, and avoids reducing working efficiency; Discharge orifice 7 is non-to be horizontally disposed with, and can be seal ring 4 extent of damage judgements certain data supporting is provided, and when discharge orifice 7 has large quantity of fluid to flow out, seal ring 4 serious wear is described, need change in time; The intact degree of seal ring 4 is convenient to observe and monitor in suitable aperture, and diameter is in the scope of 5.5 ~ 6 ㎜, is convenient to the processing of lathe, drilling machine, is conducive to reduce production costs.
Above-described embodiment; the purpose of this utility model, technological scheme and beneficial effect are further described; institute is understood that; the foregoing is only embodiment of the present utility model; and be not used in limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. a floating sealing, comprises fitting seat (1) and center pull rod (2), it is characterized in that:
Described fitting seat is provided with Seal cage in (1), at the two ends up and down of Seal cage, be all installed with spring (6), the end of spring (6) is connected with U-shaped anchor ear (5), spring (6) is in compressive state, between upper and lower two U-shaped anchor ears (5), be arranged with seal ring (4), center pull rod (2) runs through Seal cage and passes seal ring (4).
2. a kind of floating sealing according to claim 1, is characterized in that: also comprise the discharge orifice (7) that is inclined at fitting seat (1) bottom righthand side, described discharge orifice (7) is communicated with Seal cage.
3. a kind of floating sealing according to claim 2, is characterized in that: described discharge orifice (7) is 15 ° with the angle of inclination that axis becomes of center pull rod (2).
4. a kind of floating sealing according to claim 3, is characterized in that: the diameter of described discharge orifice (7) is 5.5 ~ 6 ㎜.
5. according to a kind of floating sealing described in claim 1 ~ 4 any one, it is characterized in that: described spring (6) is cylinder-shaped compression spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710386.6U CN203560080U (en) | 2013-11-12 | 2013-11-12 | Floating type sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710386.6U CN203560080U (en) | 2013-11-12 | 2013-11-12 | Floating type sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203560080U true CN203560080U (en) | 2014-04-23 |
Family
ID=50509806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320710386.6U Expired - Fee Related CN203560080U (en) | 2013-11-12 | 2013-11-12 | Floating type sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203560080U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591012A (en) * | 2013-11-12 | 2014-02-19 | 成都科盛石油科技有限公司 | Sealing device capable of being adjusted automatically |
-
2013
- 2013-11-12 CN CN201320710386.6U patent/CN203560080U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591012A (en) * | 2013-11-12 | 2014-02-19 | 成都科盛石油科技有限公司 | Sealing device capable of being adjusted automatically |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20141112 |
|
| EXPY | Termination of patent right or utility model |