CN217784209U - Improved structure of output oil seal of pinion shaft - Google Patents
Improved structure of output oil seal of pinion shaft Download PDFInfo
- Publication number
- CN217784209U CN217784209U CN202221892388.7U CN202221892388U CN217784209U CN 217784209 U CN217784209 U CN 217784209U CN 202221892388 U CN202221892388 U CN 202221892388U CN 217784209 U CN217784209 U CN 217784209U
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- China
- Prior art keywords
- annular
- oil blanket
- pinion shaft
- groove
- dust ring
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- 239000000428 dust Substances 0.000 claims abstract description 37
- 239000002184 metal Substances 0.000 claims abstract description 12
- 238000005253 cladding Methods 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 35
- 239000000463 material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 19
- 239000003921 oil Substances 0.000 description 59
- 238000005520 cutting process Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000009837 dry grinding Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model relates to a pinion shaft output oil blanket technical field discloses a pinion shaft output oil blanket improves structure, including the oil blanket body, the oil blanket body comprises the rubber body of built-in cross-section for the annular metal framework of L shape and cladding at annular metal framework outside, equidistant a plurality of annular seal lips that are equipped with on the inner wall of oil blanket body, the preceding terminal surface of oil blanket body is equipped with an annular positioning groove, one side that annular positioning groove is close to annular seal lip is equipped with the annular spring groove one with annular positioning groove matched with, be equipped with in the annular spring groove one rather than assorted from tight coil spring one, become multi-stage seal's effect through a plurality of annular seal lips, strengthened the sealed effect of oil blanket greatly, come effectively to prevent through setting up loudspeaker shape dust ring that the dust from getting into sealed area, have sealed effectual, long service life's advantage.
Description
Technical Field
The utility model relates to a pinion shaft output oil blanket technical field, in particular to pinion shaft output oil blanket improves structure.
Background
At present, the sealing of the plunger pump on the market at one side of the shaft head of the pinion shaft is realized by installing a framework oil seal at the outer side of a pump gear cover. However, in practical application, the sealing effect of the existing framework oil seal is not ideal, and oil leakage still occurs at the pinion shaft in many times. The oil leakage can cause waste of lubricating oil and also bring inconvenience to the maintenance and cleaning of equipment.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pinion shaft output oil blanket improves structure, becomes multistage sealed effect through a plurality of annular seal lips, has strengthened the sealed effect of oil blanket greatly, effectively prevents through setting up tubaeform dust ring that the dust from getting into the sealed region of pinion shaft, has sealed effectual, long service life's advantage.
The above technical purpose of the present invention can be achieved by the following technical solutions:
pinion shaft output oil blanket improves structure, including the oil blanket body, the oil blanket body comprises for the annular metal framework of L shape and the cladding at the outside rubber body of annular metal framework by built-in cross-section, equidistant a plurality of annular seal lips that are equipped with on the inner wall of oil blanket body, the preceding terminal surface of oil blanket body is equipped with an annular positioning groove, one side that annular positioning groove is close to annular seal lip is equipped with the annular spring groove one with annular positioning groove matched with, be equipped with in the annular spring groove one rather than assorted from tight coil spring one.
By adopting the technical scheme, the annular metal framework with the L-shaped cross section is used for supporting and reinforcing the oil seal body, so that the oil seal body can keep stable shape and tension, each annular sealing lip on the inner wall of the oil seal body is uniformly contacted with the sealing surface of the pinion shaft, and a stable sealing effect is ensured.
The utility model discloses a further set up to: each annular sealing lip is a bulge with an inverted triangle-shaped section.
By adopting the technical scheme, the annular sealing lip is provided with the stable sealing cutting edge by the protrusion with the inverted triangular cross section, the sealing cutting edge is used for controlling the thickness of the oil film, so that the oil film has the characteristic of flow lubrication, and under the action of the surface tension of the liquid, the rigidity of the oil film just enables the oil film and an air contact end to form a crescent surface, thereby preventing the leakage of working media at two sides of the cutting edge and further realizing a good sealing effect.
The utility model discloses a further set up to: the rear end face of the oil seal body is provided with a step-shaped mounting groove, a horn-shaped dust ring made of rubber is arranged in the mounting groove, the large-diameter end of the horn-shaped dust ring is matched with the large-diameter end of the mounting groove, and the small-diameter end of the horn-shaped dust ring extends out of the small-diameter end of the mounting groove and is matched with the end portion of the small gear shaft.
Through adopting above-mentioned technical scheme, stairstepping mounting groove is used for installing tubaeform dust ring, can prevent effectively through tubaeform dust ring that the dust from getting into the sealing area of pinion shaft to prevent effectively that the dust from to the influence that the sealing performance of oil blanket caused.
The utility model discloses a further set up to: the large-diameter end of the horn-shaped dust ring is provided with a second annular spring groove which is coaxial with the horn-shaped dust ring, and a second self-locking spiral spring matched with the second annular spring groove is arranged in the second annular spring groove.
Through adopting above-mentioned technical scheme, certain radial packing force is exerted to tubaeform dust ring to self-locking coil spring two utilizes the shrink force for the minor diameter end of tubaeform dust ring can be hugged closely with the pinion shaft all the time along with using after being worn and torn, effectively guarantees dustproof effect and oil blanket's life.
The beneficial effects of the utility model are that:
1. the utility model discloses a set up the annular metal framework that the cross-section is L shape and be used for supporting and strengthening the oil blanket body for the oil blanket body can remain stable shape and tension, thereby make each annular seal lip on the inner wall of oil blanket body all with the sealed face even contact of pinion shaft, thereby guarantee stable sealed effect.
2. The utility model discloses a plurality of annular seal lips become multistage sealed effect, have strengthened the sealed effect of oil blanket greatly, and the gully of formation can save a certain amount of fluid between the two adjacent annular seal lips simultaneously for the oil film that keeps certain thickness all the time between the sealed face of annular seal lip and pinion shaft avoids taking place dry grinding because of oil film thickness is not enough, and makes annular seal lip mouth wearing and tearing serious in the short time, causes the condition of oil leak, has further improved the life and the sealed effect of oil blanket.
3. The utility model discloses a set up tubaeform dust ring and effectively prevent that the dust from getting into the sealed area of pinion shaft to effectively prevent the influence that the dust caused to the sealing performance of oil blanket, exert certain radial packing force through self-locking coil spring to tubaeform dust ring, make the minor diameter end of tubaeform dust ring can be hugged closely with the pinion shaft all the time along with using after being worn and torn, effectively guarantee dustproof effect.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic sectional structure view of the improved structure of the output oil seal of the pinion shaft of the present invention.
Fig. 2 is a partially enlarged schematic view of a in fig. 1.
In the figure, 1, an oil seal body; 101. a front end face; 102. a rear end face; 2. an annular metal skeleton; 3. a rubber body; 4. an annular sealing lip; 5. an annular positioning groove; 6. a first annular spring groove; 7. a first self-tightening spiral spring; 8. mounting groove (ii) a; 9. a trumpet-shaped dust ring; 10. a pinion shaft; 11. a second annular spring groove; 12. and a second self-locking spiral spring.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the improved structure of the pinion shaft output oil seal comprises an oil seal body 1, wherein the oil seal body 1 comprises a built-in annular metal framework 2 with an L-shaped cross section and a rubber body 3 covering the outside of the annular metal framework 2, a plurality of annular sealing lips 4 are arranged on the inner wall of the oil seal body 1 at equal intervals, an annular positioning groove 5 is arranged on the front end surface 101 of the oil seal body 1, an annular spring groove I6 matched with the annular positioning groove 5 is arranged on one side, close to the annular sealing lip 4, of the annular positioning groove 5, a self-tightening spiral spring I7 matched with the annular spring groove I is arranged in the annular spring groove I6, the annular metal framework 2 with the L-shaped cross section is used for supporting and reinforcing the oil seal body 1, so that the oil seal body 1 can keep stable shape and tension, and each annular sealing lip 4 on the inner wall of the oil seal body 1 is uniformly contacted with the sealing surface of the pinion shaft 10, therefore, stable sealing effect is ensured, the annular positioning groove 5 is used for being matched with an oil seal seat to realize oil seal installation and positioning, the self-tightening spiral spring I7 applies certain radial pressing force to the annular sealing lip 4 by utilizing contraction force, the condition that the gap between the annular sealing lip 4 and the sealing surface of the pinion shaft 10 is increased and leakage occurs due to thermal expansion deformation or abrasion is effectively prevented, the radial pressing force between the annular sealing lip 4 and the pinion shaft 10 is effectively ensured to be constant all the time, the sealing performance of the oil seal is effectively ensured, the annular sealing lips 4 form multi-stage sealing effect, the sealing effect of the oil seal is greatly enhanced, and meanwhile, a certain amount of oil can be stored in a gully formed between every two adjacent annular sealing lips 4, so that an oil film with certain thickness is always kept between the annular sealing lips 4 and the sealing surface of the pinion shaft 10, the condition that the lip mouth of the annular sealing lip 4 is seriously abraded to cause oil leakage in a short time due to dry grinding caused by insufficient oil film thickness is avoided, and the service life and the sealing effect of the oil seal are further improved.
As shown in fig. 1, each annular seal lip 4 is a protrusion with an inverted triangular cross section, the protrusion with the inverted triangular cross section enables the annular seal lip 4 to have a stable seal cutting edge, the seal cutting edge is used for controlling the thickness of an oil film, so that the oil film has the characteristic of flow lubrication, and under the action of the surface tension of the liquid, the rigidity of the oil film just enables the oil film and an air contact end to form a meniscus, thereby preventing the leakage of working media on two sides of the cutting edge and further achieving a good seal effect.
As shown in fig. 1 and 2, the rear end face 102 of the oil seal body 1 is provided with a step-shaped mounting groove 8, the trumpet-shaped dust ring 9 made of rubber is arranged in the mounting groove 8, the large-diameter end of the trumpet-shaped dust ring 9 is matched with the large-diameter end of the mounting groove 8, the small-diameter end of the trumpet-shaped dust ring 9 extends out of the small-diameter end of the mounting groove 8 and is matched with the end part of the pinion shaft 10, the mounting groove 8 is used for mounting the trumpet-shaped dust ring 9, and dust can be effectively prevented from entering the sealing area of the pinion shaft 10 through the trumpet-shaped dust ring 9, so that the influence of the dust on the sealing performance of the oil seal is effectively prevented.
As shown in fig. 1 and fig. 2, a second annular spring groove 11 coaxial with the flared dust ring 9 is arranged at the large-diameter end of the flared dust ring 9, a second self-locking helical spring 12 matched with the second annular spring groove 11 is arranged in the second annular spring groove 11, and the second self-locking helical spring 12 applies a certain radial pressing force to the flared dust ring 9 by using a contraction force, so that the small-diameter end of the flared dust ring 9 can be always attached to the pinion shaft 10 after being worn along with use, and a dust-proof effect and the service life of an oil seal are effectively ensured.
Claims (4)
1. Pinion shaft output oil blanket improves structure, including oil blanket body (1), its characterized in that: the oil blanket body (1) comprises annular metal framework (2) that built-in cross-section is L shape and the rubber body (3) of cladding in annular metal framework (2) outside, equidistant a plurality of annular seal lips (4) of being equipped with on the inner wall of oil blanket body (1), preceding terminal surface (101) of oil blanket body (1) are equipped with an annular positioning groove (5), one side that annular positioning groove (5) are close to annular seal lip (4) is equipped with annular spring groove (6) with annular positioning groove (5) matched with, be equipped with in annular spring groove (6) rather than assorted from tight coil spring (7).
2. The pinion shaft output oil seal improvement structure as set forth in claim 1, wherein: each annular sealing lip (4) is a bulge with an inverted triangle-shaped section.
3. The improved structure of the pinion shaft output oil seal of claim 1, characterized in that: the rear end face (102) of oil blanket body (1) is equipped with one-step mounting groove (8), be equipped with tubaeform dust ring (9) of a rubber material in mounting groove (8), the major diameter end of tubaeform dust ring (9) and the major diameter end cooperation of mounting groove (8), the minor diameter end of tubaeform dust ring (9) stretches out and the tip phase-match with pinion shaft (10) from the minor diameter end of mounting groove (8).
4. The improved structure of the pinion shaft output oil seal of claim 3, characterized in that: the large-diameter end of the horn-shaped dust ring (9) is provided with a second annular spring groove (11) coaxial with the horn-shaped dust ring (9), and a second self-locking spiral spring (12) matched with the second annular spring groove (11) is arranged in the second annular spring groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221892388.7U CN217784209U (en) | 2022-07-21 | 2022-07-21 | Improved structure of output oil seal of pinion shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221892388.7U CN217784209U (en) | 2022-07-21 | 2022-07-21 | Improved structure of output oil seal of pinion shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217784209U true CN217784209U (en) | 2022-11-11 |
Family
ID=83940002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221892388.7U Active CN217784209U (en) | 2022-07-21 | 2022-07-21 | Improved structure of output oil seal of pinion shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217784209U (en) |
-
2022
- 2022-07-21 CN CN202221892388.7U patent/CN217784209U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Improved Structure of Pinion Shaft Output Oil Seal Effective date of registration: 20230707 Granted publication date: 20221111 Pledgee: Jingzhou Financing Guarantee Group Co.,Ltd. Pledgor: Jingzhou Chengzhi Machinery Manufacturing Co.,Ltd. Registration number: Y2023980047597 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20221111 Pledgee: Jingzhou Financing Guarantee Group Co.,Ltd. Pledgor: Jingzhou Chengzhi Machinery Manufacturing Co.,Ltd. Registration number: Y2023980047597 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Improved structure of small gear shaft output oil seal Granted publication date: 20221111 Pledgee: Jingzhou Financing Guarantee Group Co.,Ltd. Pledgor: Jingzhou Chengzhi Machinery Manufacturing Co.,Ltd. Registration number: Y2024980031308 |