CN214578800U - Piston sealing structure for hydraulic cylinder - Google Patents
Piston sealing structure for hydraulic cylinder Download PDFInfo
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- CN214578800U CN214578800U CN202021466008.4U CN202021466008U CN214578800U CN 214578800 U CN214578800 U CN 214578800U CN 202021466008 U CN202021466008 U CN 202021466008U CN 214578800 U CN214578800 U CN 214578800U
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- hydraulic cylinder
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Abstract
The utility model relates to the technical field of hydraulic cylinder sealing, in particular to a piston sealing structure for a hydraulic cylinder, which comprises a piston sealing piece, wherein a guide ring is arranged in the piston sealing piece, and the guide ring is arranged in a central hole of the piston sealing piece; the piston sealing element comprises an upper sealing ring and a lower sealing ring, and a gap is formed between the upper sealing ring and the lower sealing ring; a sealing wear-resistant ring is sleeved outside the piston sealing element; the outer wall of the sealing wear-resistant ring is provided with an annular groove; through setting up the guide ring, the laminating of guide ring and cylinder body inner wall makes piston and cylinder body sealed, prevents to cluster liquid, guarantees stretching out and the withdrawal of piston, provides the driving force or struts the power simultaneously.
Description
Technical Field
The utility model relates to a pneumatic cylinder seal technical field especially relates to a piston seal structure for pneumatic cylinder.
Background
In general cylinder seal, piston seal only plays single sealed effect, and today, the cylinder gradually towards the miniaturization at the rapid development of science and technology, integrates, improves the reliability and the increase of service life development of component.
For a general cylinder sealing scheme, a piston element needs to be provided with a guide seal to play a guide supporting role and a wear-resistant seal besides a piston seal, so that different grooves are needed, more installation space is needed, and meanwhile, the piston sealing structure of the existing hydraulic cylinder is poor in wear resistance and high in loss, so that the piston sealing structure for the hydraulic cylinder is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that the piston seal structure who has the pneumatic cylinder does not possess direction bearing structure among the prior art, and the piston seal structure who is used for the pneumatic cylinder that proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the piston sealing structure for the hydraulic cylinder comprises a piston sealing piece, wherein a guide ring is arranged in the piston sealing piece, and the guide ring is arranged in a central hole of the piston sealing piece.
Preferably, the piston sealing element comprises an upper sealing ring and a lower sealing ring, the upper sealing ring and the lower sealing ring are both fixedly connected with the guide ring, and a gap is arranged between the upper sealing ring and the lower sealing ring.
Preferably, the piston sealing piece is sleeved with a sealing wear-resistant ring.
Preferably, the outer wall of the sealing wear-resistant ring is provided with an annular groove.
Preferably, the guide ring is made of a polyoxymethylene material, the seal wear ring is made of a polyurethane material, and the upper seal ring and the lower seal ring are made of a low-elasticity rubber material.
The utility model provides a piston seal structure for pneumatic cylinder, beneficial effect lies in: by arranging the guide ring, the guide ring is attached to the inner wall of the cylinder body, so that the piston and the cylinder body are sealed, liquid mixing is prevented, the extension and retraction of the piston are ensured, and meanwhile, a driving force or a supporting force is provided; by arranging the sealing wear-resistant ring and the annular groove to be matched with each other, the sealing wear-resistant ring can reduce power consumption, prolong the service life and protect the guide ring from being damaged by high-pressure extrusion; the annular groove is used for containing grease or liquid, so that the sealing wear-resisting ring is always in wet friction, and friction force and wear are reduced.
Drawings
Fig. 1 is a schematic structural diagram of a piston sealing structure for a hydraulic cylinder according to the present invention.
Fig. 2 is a front view of a piston sealing structure for a hydraulic cylinder according to the present invention.
Fig. 3 is a cross-sectional view of a piston sealing structure for a hydraulic cylinder according to the present invention.
In the figure: the seal ring comprises a guide ring 1, an upper seal ring 2, a lower seal ring 3, a gap 4, a seal wear-resisting ring 5 and an annular groove 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Example 1:
referring to fig. 1-3, a piston sealing structure for a hydraulic cylinder comprises a piston sealing element, wherein a guide ring 1 is arranged in the piston sealing element, the guide ring 1 is made of polyformaldehyde material, and the guide ring 1 is arranged in a central hole of the piston sealing element. The piston sealing element is arranged on the piston, and the guide ring 1 is attached to the inner wall of the cylinder body, so that the piston and the cylinder body are sealed, liquid leakage is prevented, the extension and retraction of the piston are ensured, and meanwhile, a pushing force or a supporting force is provided.
Piston seal includes upper seal ring 2 and lower seal ring 3, and upper seal ring 2 and lower seal ring 3 are made by low elasticity rubber materials, upper seal ring 2 and lower seal ring 3 all with guide ring 1 fixed connection, are equipped with clearance 4 between upper seal ring 2 and the lower seal ring 3. The piston sealing element is sleeved with a sealing wear-resistant ring 5, and the sealing wear-resistant ring 5 is made of polyurethane material. Go up sealing ring 2 and lower sealing ring 3 and produce great axial pressure when high pressure and change, form radial deformation increase radial pressure, during the low pressure, the deflection reduces, and radial pressure also reduces simultaneously, and the frictional force of production reduces, makes the automatic high low pressure environment that is suitable for of piston seal spare reduce the consumption, and the reducible consumption of sealed wear ring 5 increases life, and protection guide ring 1 is not crowded bad by the high pressure.
Example 2:
referring to fig. 1 to 3, as another preferred embodiment of the present invention, the difference from embodiment 1 is that an annular groove 6 is formed on the outer wall of a seal wear-resistant ring 5. The annular groove 6 is used for containing grease or liquid, so that the sealing wear-resisting ring 5 is always in wet friction, and friction force and wear are reduced.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (2)
1. A piston sealing structure for a hydraulic cylinder is characterized by comprising a piston sealing piece, wherein a guide ring (1) is arranged in the piston sealing piece, and the guide ring (1) is arranged in a central hole of the piston sealing piece;
the piston sealing element comprises an upper sealing ring (2) and a lower sealing ring (3), the upper sealing ring (2) and the lower sealing ring (3) are fixedly connected with the guide ring (1), and a gap (4) is arranged between the upper sealing ring (2) and the lower sealing ring (3);
a sealing wear-resistant ring (5) is sleeved outside the piston sealing element;
the outer wall of the sealing wear-resistant ring (5) is provided with an annular groove (6).
2. A piston seal structure for a hydraulic cylinder according to claim 1, characterized in that the guide ring (1) is made of polyoxymethylene material, the seal wear ring (5) is made of polyurethane material, and the upper seal ring (2) and the lower seal ring (3) are made of low elasticity rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021466008.4U CN214578800U (en) | 2020-07-23 | 2020-07-23 | Piston sealing structure for hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021466008.4U CN214578800U (en) | 2020-07-23 | 2020-07-23 | Piston sealing structure for hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214578800U true CN214578800U (en) | 2021-11-02 |
Family
ID=78313226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021466008.4U Active CN214578800U (en) | 2020-07-23 | 2020-07-23 | Piston sealing structure for hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214578800U (en) |
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2020
- 2020-07-23 CN CN202021466008.4U patent/CN214578800U/en active Active
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