CN215293587U - High-pressure oil seal for hydraulic gear pump - Google Patents
High-pressure oil seal for hydraulic gear pump Download PDFInfo
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- CN215293587U CN215293587U CN202121423247.6U CN202121423247U CN215293587U CN 215293587 U CN215293587 U CN 215293587U CN 202121423247 U CN202121423247 U CN 202121423247U CN 215293587 U CN215293587 U CN 215293587U
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- output shaft
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- pressure oil
- oil
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Abstract
The utility model is suitable for a mechanical seal technical field provides a high-pressure oil blanket for hydraulic gear pump, the oil blanket includes: the oil seal body is sleeved on an output shaft of the output end of the pump body and used for sealing the output end of the pump body; the sealing element is fixedly arranged on the inner side of the oil seal body, abuts against the output shaft and is used for sealing the circumferential direction of the output shaft; an oil storage groove is formed between the oil seal body and the sealing element. Preferably, the oil seal body is connected with the pump body in a thread locking manner; the embodiment of the utility model provides a form the oil storage tank between sealing member and the oil blanket body, apply when the internal pressure of pump body during on the sealing member, lubricating grease in the oil storage tank can exert pressure to the sealing member of rubber material to make and keep closely laminating between sealing member and the output shaft, prevent the condition that the grease was revealed from appearing in the use.
Description
Technical Field
The utility model belongs to the technical field of mechanical seal, especially, relate to a high-pressure oil blanket for hydraulic gear pump.
Background
Oil seals are a common term for seals, simply the seal of lubricating oil. The oil seal is a mechanical element for sealing grease, and separates a part needing lubrication in a transmission part from a force-applying part, so that lubricating oil is prevented from leaking. The sealing elements for static sealing and dynamic sealing are called oil seals.
The high-pressure oil seal is mainly used for sealing a hydraulic motor matched with engineering machinery, agricultural machinery, construction machinery, heavy mining machinery and the like, the normal pressure of the high-pressure oil seal is required to be 15-20Mpa, the maximum pressure of the high-pressure oil seal is required to be 30Mpa, and for some shaft bodies needing axial reciprocating motion, the oil seal is laterally extruded and rubbed.
The existing high-pressure oil seal structure mainly comprises a framework and a rubber body, the rubber body is wrapped outside the framework, a sealing lip is formed on the rubber body, the end face of the sealing lip is a flat end face of a plane structure, the pressure bearing capacity of the sealing lip is poor, the sealing lip is easy to deform under the action of high pressure, accordingly, the abrasion of the sealing lip is aggravated, the sealing effect is poor, the service life is short, and the sealing performance is fast in attenuation.
Disclosure of Invention
An object of the embodiment of the utility model is to provide a high-pressure oil blanket for hydraulic gear pump aims at solving current high-pressure oil blanket and takes place to warp very easily under the high-pressure effect to aggravate the wearing and tearing of seal lip, its sealed effect is relatively poor, and life is shorter, the very fast problem of sealing performance decay.
The embodiment of the utility model provides a realize like this, a high-pressure oil blanket for hydraulic gear pump, the oil blanket includes:
the oil seal body is sleeved on an output shaft of the output end of the pump body and used for sealing the output end of the pump body; and
the sealing element is fixedly arranged on the inner side of the oil seal body, abuts against the output shaft and is used for sealing the circumferential direction of the output shaft;
an oil storage groove is formed between the oil seal body and the sealing element.
Preferably, the oil seal body is connected with the pump body in a thread locking manner.
Preferably, the part of the output shaft extending into the sealing element is provided with a shaft shoulder, and the sealing element abuts against the shaft shoulder through a supporting sleeve.
Preferably, the support sleeve is of an annular structure and is sleeved on the output shaft, and sliding contact sealing is formed between the support sleeve and the shaft shoulder.
Preferably, a plurality of annular grooves are further formed in the inner wall of the sealing element, and a plurality of sealing rings are correspondingly arranged to abut against the surface of the output shaft.
Preferably, the output end of the pump body at the outer side of the oil seal body is also provided with a flange plate;
the middle part of the flange plate is provided with an opening, and the flange plate is rotatably connected with the output shaft through the opening;
the flange plate is fixed on the pump body through a bolt assembly.
Compared with the prior art, the beneficial effects of the utility model are that: the embodiment of the utility model provides a form the oil storage tank between sealing member and the oil blanket body, when the internal pressure of pump body was exerted on the sealing member, the lubricating grease in the oil storage tank can exert pressure to the sealing member of rubber material to make and keep closely laminating between sealing member and the output shaft, prevent the condition that the grease appears revealing in the use; support and contradict through a plurality of sealing washers on the sealing member in the cover outside the surface of output shaft is used for improving the leakproofness between output shaft and the high pressure oil blanket to in the prevention normal use process, the lubricating grease is followed the condition of output shaft outflow takes place.
Drawings
Fig. 1 is a schematic cross-sectional view of a high-pressure oil seal for a hydraulic gear pump according to an embodiment of the present invention;
fig. 2 is the embodiment of the utility model provides a high-pressure oil seal's for hydraulic gear pump stereogram.
In the drawings: 1. a pump body; 2. an oil seal body; 21. an external thread; 3. a seal member; 31. an oil storage tank; 4. an output shaft; 41. a shaft shoulder; 5. a support sleeve; 6. a flange plate; 7. and (5) sealing rings.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description is provided for the specific embodiments of the present invention.
As shown in fig. 1-2, for the utility model discloses a high-pressure oil seal's for hydraulic gear pump structure chart that an embodiment provided, the oil blanket includes:
the oil seal device comprises an oil seal body 2, wherein the oil seal body 2 is sleeved on an output shaft 4 of an output end of a pump body 1 and is used for sealing the output end of the pump body 1; and
the sealing element 3 is fixedly arranged on the inner side of the oil seal body 2, abuts against the output shaft 4 and is used for sealing the circumferential direction of the output shaft 4;
an oil storage tank 31 is formed between the oil seal body 2 and the seal member 3.
In an embodiment of the present invention, the high pressure oil seal includes an oil seal body 2 and a sealing element 3, the oil seal body 2 is a metal component, and when in use, a threaded connection is formed between the external thread 21 of the outer surface and the pump body 1, it is necessary to say that the sealing element 3 is made of rubber material, and the sealing element 3 and the oil seal body 2 are fixedly connected through structural sealant, so as to seal the output end of the pump body 1.
Of course, can also lock through multiunit fixing bolt between sealing member 3 and the oil blanket body 2, perhaps other fixed connection modes are installed, and this embodiment does not do specific restriction to the connected mode between sealing member 3 and the oil blanket body 2 here, and connection structure satisfies to the junction seal can.
In the specific use process, an oil storage tank 31 is formed between the sealing element 3 and the oil seal body 2, when the internal pressure of the pump body 1 is applied to the sealing element 3, the lubricating grease in the oil storage tank 31 can apply pressure to the sealing element 3 made of rubber, so that the sealing element 3 and the output shaft 4 are tightly attached to each other, and the grease leakage is prevented from occurring in the use process.
As shown in fig. 2, as a preferred embodiment of the present invention, the oil seal body 2 is connected to the pump body 1 by a thread locking manner.
In a case of this embodiment, the outside of the oil seal body 2 is connected to the pump body 1 by means of screw connection, and in addition, in order to improve the strength of screw connection, a worker can add thread glue on the external thread 21 when mounting, so as to effectively prevent the problem of thread looseness occurring during use, and improve the stability of thread sealing.
Of course, in a specific using process, the threaded connection structure of the oil seal body 2 can be replaced by a clamping and fixing mode, the same sealing and mounting effects can be achieved, and the implementation is not limited specifically here.
As shown in fig. 1, as another preferred embodiment of the present invention, a portion of the output shaft 4 extending into the sealing member 3 is provided with a shoulder 41, and the sealing member 3 abuts against the shoulder 41 through the supporting sleeve 5.
The support sleeve 5 is of an annular structure and is sleeved on the output shaft 4, and sliding contact sealing is formed between the support sleeve 5 and the shaft shoulder 41.
In a case of this embodiment, be equipped with the support cover 5 of annular structure on the inner wall of sealing member 3, sealing member 3 is contradicted through support cover 5 during the use output shaft 4, supports 5 bodies and is wear-resisting material, under the effect of lubricating grease, with output shaft 4 forms sliding contact friction to reduce the wearing and tearing between sealing member 3 and the output shaft 4, improve the life of high pressure oil blanket.
As shown in fig. 1, as another preferred embodiment of the present invention, a plurality of annular grooves are further disposed on the inner wall of the sealing member 3, and a plurality of sealing rings 7 are correspondingly disposed to abut against the surface of the output shaft 4.
The utility model discloses an embodiment, contradict through a plurality of sealing washer 7 on the sealing member 3 in the support cover 5 outside the surface of output shaft 4 is used for improving the leakproofness between output shaft 4 and the high-pressure oil blanket to in the prevention normal use, lubricating grease follows the condition that output shaft 4 flowed out takes place.
As shown in fig. 1, as another preferred embodiment of the present invention, a flange 6 is further provided at the output end of the pump body 1 outside the oil seal body 2;
an opening is formed in the middle of the flange plate 6, and the flange plate 6 is rotatably connected with the output shaft 4 through the opening;
the flange 6 is fixed on the pump body 1 through a bolt assembly.
The utility model discloses an in the embodiment, the output opening part in the high pressure oil blanket outside passes through 6 fixed connection of ring flange pump body 1, it is right to be used for the high pressure oil blanket supports spacingly, prevents that fixed connection's high pressure oil blanket body is not hard up, causes lubricating grease to reveal.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides a high-pressure oil seal for hydraulic gear pump which characterized in that, the oil blanket includes:
the oil seal body is sleeved on an output shaft of the output end of the pump body and used for sealing the output end of the pump body; and
the sealing element is fixedly arranged on the inner side of the oil seal body, abuts against the output shaft and is used for sealing the circumferential direction of the output shaft;
an oil storage groove is formed between the oil seal body and the sealing element.
2. A high-pressure oil seal for a hydraulic gear pump according to claim 1, wherein the oil seal body is connected with the pump body in a thread locking manner.
3. A high-pressure oil seal for a hydraulic gear pump according to claim 1 or 2, wherein the part of the output shaft extending into the sealing element is provided with a shoulder against which the sealing element abuts via a support sleeve.
4. The high-pressure oil seal for the hydraulic gear pump as claimed in claim 3, wherein the support sleeve is of an annular structure and is sleeved on the output shaft, and a sliding contact seal is formed between the support sleeve and the shaft shoulder.
5. A high-pressure oil seal for a hydraulic gear pump as claimed in claim 4, wherein the inner wall of the sealing element is further provided with a plurality of annular grooves, and a plurality of sealing rings are correspondingly arranged to abut against the surface of the output shaft.
6. A high-pressure oil seal for a hydraulic gear pump as claimed in claim 5, wherein a flange is further provided at the output end of the pump body outside the oil seal body;
the middle part of the flange plate is provided with an opening, and the flange plate is rotatably connected with the output shaft through the opening;
the flange plate is fixed on the pump body through a bolt assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121423247.6U CN215293587U (en) | 2021-06-25 | 2021-06-25 | High-pressure oil seal for hydraulic gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121423247.6U CN215293587U (en) | 2021-06-25 | 2021-06-25 | High-pressure oil seal for hydraulic gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215293587U true CN215293587U (en) | 2021-12-24 |
Family
ID=79518473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121423247.6U Active CN215293587U (en) | 2021-06-25 | 2021-06-25 | High-pressure oil seal for hydraulic gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215293587U (en) |
-
2021
- 2021-06-25 CN CN202121423247.6U patent/CN215293587U/en active Active
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