CN205446710U - Two -way seal assembly of rotation axis - Google Patents
Two -way seal assembly of rotation axis Download PDFInfo
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- CN205446710U CN205446710U CN201521137665.3U CN201521137665U CN205446710U CN 205446710 U CN205446710 U CN 205446710U CN 201521137665 U CN201521137665 U CN 201521137665U CN 205446710 U CN205446710 U CN 205446710U
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- rotary shaft
- seal assembly
- ring
- rotation axis
- way seal
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Abstract
The utility model relates to a sealing technique field especially relates to a two -way seal assembly of rotation axis. This two -way seal assembly of rotation axis includes casing, rotation axis and sealing member, the rotation axis with the casing is connected, on the casing corresponding to the rotation axis is provided with the slot, the sealing member includes elasticity seal, movable sealing ring and dust ring, movable sealing ring and elasticity seal corresponding to rotation axis outside -in set gradually in the ditch inslot, the dust ring set up in movable sealing ring with between the slot. The utility model discloses a movable sealing ring and elasticity seal set gradually in the ditch inslot corresponding to rotation axis outside -in among the two -way seal assembly of rotation axis, movable sealing ring rigid great and be provided with the dust ring, corresponding to the movable sealing ring of rotation axis setting can prevent the rotation axis to the wearing and tearing of sealing member, and the dust ring can prevent that debris from getting into for life increases, have simple structure and the good advantage of stability.
Description
Technical field
This utility model relates to technical field of sealing technology, particularly relates to a kind of rotary shaft two way seal assembly, a kind of rotary shaft two way seal assembly that can increase service life.
Background technology
Sealing member is to prevent fluid or solid particle from revealing between adjacent faying face and prevent material or the part of the intrusion parts within machinery equipment such as introduced contaminants such as dust and moisture.
Switching valve is widely used in polyethylene, polypropylene production equipment, its original design is traditional axial tetrafluoro packing_seal, belong to Oilless Lubrication Seal in Petroleum Gas, in actual production process, due to product type and the conversion of product grade, often occur that material viscosity difference causes material intensification carbonization to lump, in turn result in the stop production to overhaul because switching valve is malfunctioning, will overhaul once in each week time serious, according to this situation, need to design the rotary shaft two way seal assembly of length in a kind of service life.
Oil production equipment at present more uses traditional reciprocating beam-pumping unit, and the advantage being commonly called as " machine of kowtowing " is that equipment is stable, and applied widely, shortcoming is that production capacity is low, energy consumption is big.Current various countries industry professional is just being devoted to the R and D of the regeneration product of this kind equipment.The product of more advanced application is the exploitation application of the rotary oil pumping pump in down-hole, its operating pressure 12MPa, use temperature 280 DEG C, 50 turns/min of rotating speed, medium are the Combination medium of aqueous, husky, mud and crude oil, traditional sealed product all can not meet this working condition and use, granule enters and seals position, work surface causes grinding loss, can produce the situation of moment seal failure.
Utility model content
(1) to solve the technical problem that
The technical problems to be solved in the utility model is that switching valve original design is traditional axial tetrafluoro packing_seal, belong to Oilless Lubrication Seal in Petroleum Gas, often occur material viscosity different and cause material intensification carbonization to lump, in turn result in the stop production to overhaul because switching valve is malfunctioning, will overhaul once in each week time serious, traditional reciprocating beam-pumping unit medium is aqueous, husky, the Combination medium of mud and crude oil, traditional sealed product all can not meet this working condition and use, granule enters and seals position, work surface is caused grinding loss, the problem that can produce moment seal failure.
(2) technical scheme
In order to solve above-mentioned technical problem, this utility model provides a kind of rotary shaft two way seal assembly, this rotary shaft two way seal assembly includes housing, rotary shaft and sealing member, described rotary shaft is connected with described housing, on described housing, described rotary shaft is provided with groove, described sealing member includes elastic sealed body, rotary packing ring and dust ring, described rotary packing ring and elastic sealed body are set in turn in described groove corresponding to described rotary shaft ecto-entad, and described dust ring is arranged between described rotary packing ring and described groove.
Preferably, described rotary packing ring is provided with oil storage tank corresponding to described rotary shaft.
Preferably, added with grease in described oil storage tank.
Preferably, described rotary packing ring is provided with projection, described dust ring is provided with groove corresponding to described rotary packing ring.
Preferably, the material of described rotary packing ring is polyether-ether-ketone, polyparaphenylene, graphite or carbon fiber.
Preferably, the material of described elastic sealed body is nitrile rubber, fluorubber, perfluoroelastomers or silicone rubber.
Preferably, the material of described dust ring is polyether-ether-ketone, polyparaphenylene, graphite or carbon fiber.
Preferably, described elastic sealed body selects O RunddichtringO, H RunddichtringO or X-shaped sealing ring.
Preferably, described housing is for turning to valve body or oil pump body.
(3) beneficial effect
Technique scheme of the present utility model has the advantage that the rotary shaft in rotary shaft two way seal assembly of the present utility model is connected with housing, on housing, rotary shaft is provided with groove, sealing member includes elastic sealed body, rotary packing ring and dust ring, rotary packing ring and elastic sealed body are set in turn in groove corresponding to rotary shaft ecto-entad, and described dust ring is arranged between described rotary packing ring and described groove.In rotary shaft two way seal assembly of the present utility model, rotary packing ring and elastic sealed body are set in turn in groove corresponding to rotary shaft ecto-entad, rotary packing ring rigid relatively big and be provided with dust ring, the rotary packing ring arranged corresponding to rotary shaft is prevented from the rotary shaft abrasion to sealing member, and dust ring is prevented from foreign material and enters so that service life increases；The advantage with simple in construction and good stability.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment rotary shaft two way seal assembly；
Fig. 2 is that the structural representation at rotary valve applied by this utility model embodiment rotary shaft two way seal assembly；
Fig. 3 is that the structural representation at oil pump applied by this utility model embodiment rotary shaft two way seal assembly.
In figure: 1: elastic sealed body；2: rotary packing ring；3: dust ring；4: oil storage tank；5: groove；6: turn to valve body；7: rotary shaft；8: oil pump body.
Detailed description of the invention
For making the purpose of this utility model embodiment, technical scheme and advantage clearer, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is a part of embodiment of the present utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained on the premise of not making creative work, broadly fall into the scope of this utility model protection.
As shown in Figure 1 to Figure 3, the rotary shaft two way seal assembly that this utility model embodiment provides, including housing, rotary shaft 7 and sealing member, described rotary shaft 7 is connected with described housing, on described housing, described rotary shaft 7 is provided with groove 5, described sealing member includes elastic sealed body 1, rotary packing ring 2 and dust ring 3, elastic sealed body 1 contacts connection with rotary packing ring 2, described rotary packing ring 2 and elastic sealed body 1 are set in turn in described groove 5 corresponding to described rotary shaft 7 ecto-entad, i.e. rotary packing ring 2 is arranged at the top of groove 5, elastic sealed body 1 is arranged at the bottom of groove 5.Described dust ring 3 is arranged between described rotary packing ring 2 and described groove 5.
In rotary shaft two way seal assembly of the present utility model, rotary packing ring 2 and elastic sealed body 1 are set in turn in groove 5 corresponding to rotary shaft ecto-entad, rotary packing ring 2 rigid relatively big and be provided with dust ring 3, the rotary packing ring 2 arranged corresponding to rotary shaft 7 is prevented from the rotary shaft abrasion to sealing member, and dust ring 3 is prevented from foreign material and enters, strengthen the scope of application to medium, such as mud, the use condition that Sha Shui, powder etc. are harsh.Service life is increased；The advantage with simple in construction and good stability.
In order to prevent Oilless Lubrication Seal in Petroleum Gas from occurring, material viscosity is different and causes material intensification carbonization to lump, and rotary packing ring 2 described in the present embodiment is provided with oil storage tank 4 corresponding to described rotary shaft 7.Added with grease in described oil storage tank 4.
So that the connection between sealing ring 2 and dust ring 3 is more tight, the described rotary packing ring 2 of this enforcement two kinds is provided with projection, described dust ring 3 is provided with groove corresponding to described rotary packing ring 2.
The material of described rotary packing ring 2 is material modified containing polyether-ether-ketone, polyparaphenylene, graphite, carbon fiber etc..Rotary packing ring 2 rigid relatively big, elasticity is less.The material of described elastic sealed body 1 is nitrile rubber, fluorubber, perfluoroelastomers or silicone rubber.Elastic sealed body 1 rigid less, elastic deformation is bigger.The material of described dust ring 3 is material modified containing polyether-ether-ketone, polyparaphenylene, graphite, carbon fiber etc..
So that better tightness, described elastic sealed body 1 selects O RunddichtringO, H RunddichtringO or X-shaped sealing ring.The present embodiment Elastic seal 1 selects X-shaped sealing ring.Elastic sealed body 1 utilizes the resilience of rubber to play the effect of spring, to the balancing force that rotary packing ring 2 is lasting, determines rubber hardness and decrement according to operating pressure.
Housing described in the present embodiment, for turning to valve body 6 or oil pump body 8, is i.e. positioned at the lower section of sealing ring 2, may be contained within the trench bottom of groove 5 at oil pump Elastic seal 1 at switching valve Elastic seal 1.
According to actual condition, such as temperature, pressure, medium or rotating speed difference, sealing member is also different on specification designs, assembly sectional area is compared strict with the requirement of groove 5 sectional area ratio, it is exactly that decrement is required strictly, the big advantage of decrement is pressure height, and shortcoming is that continued compensation power causes greatly and starts energy anti-wear performance big, to processing and manufacturing material and require that height, abrasion are corresponding and increase, and decrement is little, resistance to forces down, power is little, wear extent is little in startup, but can produce micro-leakage phenomenon during pressure height.Actual application is intended to design rational decrement.
Groove 5 area S=A*W, A are the left and right width of groove 5, and W is the bottom land distance up and down to rotary shaft 7 of groove 5.Rotary shaft two-way axis hole dual-purpose high voltage seals gross area S0=S1+S2+S3, and wherein S1 is elastic sealed body 1 area of section, and S2 is rotary packing ring 2 area of section, and S3 is the sectional area H*G that dust ring 3 is in groove.H is the height of above-below direction, and G is the thickness of dust ring 3, S/S0 0.95.
When the rotary shaft two way seal assembly that this utility model embodiment provides uses, rotary packing ring 2 is arranged at outside rotary shaft 7, is provided with lubricant in oil storage tank 4, and elastic sealed body 1 is arranged at the bottom of groove 5, and dust ring 3 falls in groove 5 for dust-proof.
In sum, rotary shaft in rotary shaft two way seal assembly of the present utility model is connected with housing, on housing, rotary shaft is provided with groove, sealing member includes elastic sealed body, rotary packing ring and dust ring, rotary packing ring and elastic sealed body are set in turn in groove corresponding to rotary shaft ecto-entad, and described dust ring is arranged between described rotary packing ring and described groove.In rotary shaft two way seal assembly of the present utility model, rotary packing ring and elastic sealed body are set in turn in groove corresponding to rotary shaft ecto-entad, rotary packing ring rigid relatively big and be provided with dust ring, the rotary packing ring arranged corresponding to rotary shaft is prevented from the rotary shaft abrasion to sealing member, and dust ring is prevented from foreign material and enters so that service life increases；The advantage with simple in construction and good stability.
Last it is noted that above example is only in order to illustrate the technical solution of the utility model, it is not intended to limit；Although this utility model being described in detail with reference to previous embodiment, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of this utility model each embodiment technical scheme.
Claims (9)
1. a rotary shaft two way seal assembly, it is characterized in that: include housing, rotary shaft (7) and sealing member, described rotary shaft (7) is connected with described housing, on described housing, described rotary shaft (7) is provided with groove (5), described sealing member includes elastic sealed body (1), rotary packing ring (2) and dust ring (3), described rotary packing ring (2) and elastic sealed body (1) are set in turn in described groove (5) corresponding to described rotary shaft (7) ecto-entad, described dust ring (3) is arranged between described rotary packing ring (2) and described groove (5).
Rotary shaft two way seal assembly the most according to claim 1, it is characterised in that: on described rotary packing ring (2), described rotary shaft (7) is provided with oil storage tank (4).
Rotary shaft two way seal assembly the most according to claim 2, it is characterised in that: added with grease in described oil storage tank (4).
Rotary shaft two way seal assembly the most according to claim 1, it is characterised in that: it is provided with projection on described rotary packing ring (2), described dust ring (3) is provided with groove corresponding to described rotary packing ring (2).
Rotary shaft two way seal assembly the most according to claim 1, it is characterised in that: the material of described rotary packing ring (2) is polyether-ether-ketone, polyparaphenylene, graphite or carbon fiber.
Rotary shaft two way seal assembly the most according to claim 1, it is characterised in that: the material of described elastic sealed body (1) is nitrile rubber, fluorubber, perfluoroelastomers or silicone rubber.
Rotary shaft two way seal assembly the most according to claim 1, it is characterised in that: the material of described dust ring (3) is polyether-ether-ketone, polyparaphenylene, graphite or carbon fiber.
Rotary shaft two way seal assembly the most according to claim 1, it is characterised in that: described elastic sealed body (1) selects O RunddichtringO, H RunddichtringO or X-shaped sealing ring.
Rotary shaft two way seal assembly the most according to claim 1, it is characterised in that: described housing is for turning to valve body (6) or oil pump body (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521137665.3U CN205446710U (en) | 2015-12-31 | 2015-12-31 | Two -way seal assembly of rotation axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521137665.3U CN205446710U (en) | 2015-12-31 | 2015-12-31 | Two -way seal assembly of rotation axis |
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| Publication Number | Publication Date |
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| CN205446710U true CN205446710U (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521137665.3U Active CN205446710U (en) | 2015-12-31 | 2015-12-31 | Two -way seal assembly of rotation axis |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387770A (en) * | 2017-07-27 | 2017-11-24 | 丹东锦达密封有限公司 | X-type auxiliary seal ring type mechanically-sealing apparatus |
| CN110145601A (en) * | 2019-06-18 | 2019-08-20 | 深圳市佳易研磨有限公司 | A kind of polisher lapper main shaft sealing construction |
-
2015
- 2015-12-31 CN CN201521137665.3U patent/CN205446710U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387770A (en) * | 2017-07-27 | 2017-11-24 | 丹东锦达密封有限公司 | X-type auxiliary seal ring type mechanically-sealing apparatus |
| CN110145601A (en) * | 2019-06-18 | 2019-08-20 | 深圳市佳易研磨有限公司 | A kind of polisher lapper main shaft sealing construction |
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