CN212717482U - Hydraulic cylinder sealing device - Google Patents
Hydraulic cylinder sealing device Download PDFInfo
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- CN212717482U CN212717482U CN202021590434.9U CN202021590434U CN212717482U CN 212717482 U CN212717482 U CN 212717482U CN 202021590434 U CN202021590434 U CN 202021590434U CN 212717482 U CN212717482 U CN 212717482U
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- seal assembly
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Abstract
The utility model belongs to the technical field of the pneumatic cylinder, concretely relates to pneumatic cylinder sealing device, include: the piston rod is movably arranged in the cylinder body; the piston is provided with a first sealing assembly suitable for sealing the interior of the cylinder body; and a second sealing assembly suitable for sealing the outside of the cylinder body is arranged at the joint of the cylinder body and the piston rod. This hydraulic cylinder sealing device adopts first seal assembly and second seal assembly to seal the inside and the outside of pneumatic cylinder respectively to reduce leak in the pneumatic cylinder and leak outward, improve its result of use and life-span.
Description
Technical Field
The utility model belongs to the pneumatic cylinder field, concretely relates to pneumatic cylinder sealing device.
Background
When the hydraulic cylinder works, the piston moves back and forth in the hydraulic cylinder to convert hydraulic energy into mechanical energy, but in the hydraulic cylinder in the prior art, the leakage problem exists in the hydraulic cylinder due to the poor tightness and other technologies in the cylinder, the internal leakage of the hydraulic cylinder causes the phenomena of reduction in efficiency, creeping and the like of the cylinder, and the external leakage of the hydraulic cylinder causes environmental pollution, potential safety hazards and other technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pneumatic cylinder sealing device to solve the technical problem that the pneumatic cylinder leaked among the prior art.
In order to solve the technical problem, the utility model provides a pneumatic cylinder sealing device, include: the piston rod is movably arranged in the cylinder body; the piston is provided with a first sealing assembly suitable for sealing the interior of the cylinder body; and a second sealing assembly suitable for sealing the outside of the cylinder body is arranged at the joint of the cylinder body and the piston rod.
Further: the first seal assembly includes: the piston comprises a plurality of sealing grooves arranged on the outer circumference of the piston and sealing rings filled in the sealing grooves, wherein the outer circumference of each sealing ring is attached to the inner side wall of the cylinder body.
Further: the second seal assembly includes: the sealing device comprises a groove, a sealing ring and a pressing ring, wherein the groove is formed in the inner side wall of the end part of the cylinder body; the sealing ring is sleeved on the piston rod and is fixed in the groove through the pressing ring.
Further: the piston rod is provided with a positioning plate; the piston rod is connected with an installation plate in a threaded manner; the piston is clamped between the positioning plate and the mounting plate.
Further: and the piston is provided with a plug connector which is suitable for being connected with the mounting plate and the positioning plate respectively.
Further: the plug connector comprises: a plug part and a plug groove; wherein the inserting parts are arranged at two sides of the piston; the inserting groove is matched with the inserting part and is respectively arranged on the end face of the mounting plate and the end face of the positioning plate.
Further: be provided with the screw rod of wearing out to the locating plate on the mounting panel, the both ends of screw rod respectively threaded connection have with the nut of locating plate terminal surface, mounting panel terminal surface butt.
The beneficial effects of the utility model are that, the utility model discloses a hydraulic cylinder sealing device adopts first seal assembly and second seal assembly to seal the inside and the outside of pneumatic cylinder respectively to leak and leak outward in reducing the pneumatic cylinder, improve its result of use and life-span.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a preferred embodiment of the hydraulic cylinder sealing device of the present invention.
In the figure:
1. a cylinder body; 2. a piston rod; 3. a piston; 4. a first seal assembly; 41. a sealing groove; 42. a seal ring; 5. a second seal assembly; 51. a groove; 52. a seal ring; 53. pressing a ring; 6. mounting a plate; 7. positioning a plate; 8. a plug-in unit; 81. a plug-in part; 82. inserting grooves; 9. a screw; 91. and a nut.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the present embodiment provides a hydraulic cylinder sealing apparatus, including: the piston comprises a cylinder body 1, a piston rod 2 movably arranged in the cylinder body 1 and a piston 3 arranged on the piston rod 2 of the piston 3. The piston 3 is provided with a first sealing assembly 4 suitable for sealing the inside of the cylinder body 1, and the joint of the cylinder body 1 and the piston rod 2 is provided with a second sealing assembly 5 suitable for sealing the outside of the cylinder body 1. Adopt first seal assembly 4 and second seal assembly 5 to seal the inside and the outside of pneumatic cylinder respectively to reduce leak in the pneumatic cylinder and leak outward, improve its result of use and life-span.
Specifically, in the present embodiment, the first seal assembly 4 includes: a plurality of sealing grooves 41 arranged on the outer circumference of the piston 3, and a sealing ring 42 filled in each sealing groove 41, wherein the outer circumference of the sealing ring 42 is attached to the inner side wall of the cylinder 1. The plurality of sealing rings 42 seal the piston 3 layer by layer, and improve the sealing effect when the piston 3 moves.
In this embodiment, the seal ring 42 may be an O-ring or a Y-ring.
Specifically, in the present embodiment, the second seal assembly 5 includes: a groove 51, a sealing ring 52 and a pressing ring 53, wherein the groove 51 is arranged on the inner side wall of the end part of the cylinder body 1; the sealing ring 52 is sleeved on the piston rod 2, and the sealing ring 52 is fixed in the groove 51 through a pressing ring 53. The sealing ring 52 prevents the hydraulic oil inside the cylinder 1 from leaking outwards from the connection between the piston rod 2 and the cylinder 1, thereby improving the sealing effect of the hydraulic cylinder.
In this embodiment, the sealing ring 52 may be, but not limited to, an O-ring, and may be made of a graphite-rubber mixture.
In this embodiment, the piston rod 2 is provided with a positioning plate 7, the piston rod 2 is screwed with a mounting plate 6, and the piston 3 is clamped between the positioning plate 7 and the mounting plate 6 to fix the piston 3. In order to further fix the piston 3, a screw 9 penetrating out of the positioning plate 7 is arranged on the mounting plate 6, two ends of the screw 9 are respectively in threaded connection with nuts 91, the end face of one nut 91 is abutted against the end face of the positioning plate 7, and the end face of the other nut 91 is abutted against the end face of the mounting plate 6. The mounting plate 6, the screw 9 and the nut 91 are arranged, so that the piston 3 can be detached from the rod 2 of the piston 3, and the worn piston 3 can be replaced conveniently.
In this embodiment, the piston 3 is provided with a plug 8 adapted to be connected to the mounting plate 6 and the positioning plate 7, respectively. Specifically, the plug-in unit 8 includes: plug-in components 81, inserting groove 82, inserting components 81 set up the both sides at piston 3, and inserting groove 82 and inserting components 81 adaptation, and set up respectively on mounting panel 6 terminal surface and locating plate 7 terminal surface. The mating part 81 is mated with the mating groove 82 to form a labyrinth structure, which not only prevents the leakage of hydraulic oil from the joint between the mounting plate 6 and the piston 3 and the joint between the positioning plate 7 and the piston 3, but also improves the stability of the connection between the piston 3 and the mounting plate 6 and between the piston 3 and the positioning.
In conclusion, the first sealing assembly 4 and the second sealing assembly 5 are adopted to respectively seal the inside and the outside of the hydraulic cylinder, so that the internal leakage and the external leakage of the hydraulic cylinder are reduced, the using effect is improved, and the service life is prolonged; the positioning plate 7, the screw rod 9 and the nut 91 are adopted, so that the worn piston 3 is convenient to replace, and the cost is saved; by adopting the plug connector 8, the internal sealing effect is further improved, and the connection stability of the piston 3 and the piston rod 2 is also improved.
All the parts of the devices selected in the present application are general standard parts or parts known to those skilled in the art, and the structures and principles thereof can be known to those skilled in the art through technical manuals or through routine experimental methods.
In the description of the embodiments of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. A hydraulic cylinder seal assembly, comprising:
the piston rod is movably arranged in the cylinder body;
the piston is provided with a first sealing assembly suitable for sealing the interior of the cylinder body;
and a second sealing assembly suitable for sealing the outside of the cylinder body is arranged at the joint of the cylinder body and the piston rod.
2. The hydraulic cylinder seal assembly of claim 1,
the first seal assembly includes: a plurality of sealing grooves arranged on the outer circumference of the piston, and a sealing ring filled in each sealing groove, wherein
The outer circumference of the sealing ring is attached to the inner side wall of the cylinder body.
3. A hydraulic cylinder seal assembly as claimed in claim 2,
the second seal assembly includes: a groove, a sealing ring and a clamping ring, wherein
The groove is arranged on the inner side wall of the end part of the cylinder body;
the sealing ring is sleeved on the piston rod and is fixed in the groove through the pressing ring.
4. The hydraulic cylinder seal assembly of claim 1,
the piston rod is provided with a positioning plate;
the piston rod is connected with an installation plate in a threaded manner;
the piston is clamped between the positioning plate and the mounting plate.
5. A hydraulic cylinder seal assembly as claimed in claim 4,
and the piston is provided with a plug connector which is suitable for being connected with the mounting plate and the positioning plate respectively.
6. A hydraulic cylinder seal assembly as claimed in claim 5,
the plug connector comprises: a plug part and a plug groove; wherein
The insertion parts are arranged on two sides of the piston;
the inserting groove is matched with the inserting part and is respectively arranged on the end face of the mounting plate and the end face of the positioning plate.
7. A hydraulic cylinder seal assembly as claimed in claim 6,
a screw rod penetrating out of the positioning plate is arranged on the mounting plate;
and the two ends of the screw rod are respectively in threaded connection with nuts abutted against the end surfaces of the positioning plate and the mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021590434.9U CN212717482U (en) | 2020-08-04 | 2020-08-04 | Hydraulic cylinder sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021590434.9U CN212717482U (en) | 2020-08-04 | 2020-08-04 | Hydraulic cylinder sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212717482U true CN212717482U (en) | 2021-03-16 |
Family
ID=74912032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021590434.9U Active CN212717482U (en) | 2020-08-04 | 2020-08-04 | Hydraulic cylinder sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212717482U (en) |
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2020
- 2020-08-04 CN CN202021590434.9U patent/CN212717482U/en active Active
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