CN215763286U - High-speed high-pressure PTFE + B reciprocating seal ring for bidirectional shaft - Google Patents
High-speed high-pressure PTFE + B reciprocating seal ring for bidirectional shaft Download PDFInfo
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- CN215763286U CN215763286U CN202121905417.4U CN202121905417U CN215763286U CN 215763286 U CN215763286 U CN 215763286U CN 202121905417 U CN202121905417 U CN 202121905417U CN 215763286 U CN215763286 U CN 215763286U
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Abstract
The utility model relates to the technical field of sealing rings, and discloses a high-speed high-pressure PTFE + B reciprocating sealing ring for a bidirectional shaft, which comprises a pull rod, an O-shaped ring and a sealing ring, wherein the O-shaped ring is movably sleeved with the outer wall of the pull rod, the inner wall of the O-shaped ring is attached to the outer wall of the pull rod, the sealing ring is fixedly sleeved on the outer wall of the O-shaped ring, and an annular cavity is formed in the sealing ring. The utility model reduces the friction force on the surface of the sealing ring while ensuring the sealing effect, and effectively avoids the damage of the sealing ring.
Description
Technical Field
The utility model relates to the technical field of sealing rings, in particular to a high-speed high-pressure PTFE + B reciprocating sealing ring for a bidirectional shaft.
Background
The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion (or swinging motion), and when the hydraulic actuating element is used for realizing reciprocating motion, a speed reducing device can be omitted, and the hydraulic actuating element has no transmission clearance and moves stably, so that the hydraulic actuating element is widely applied to various mechanical hydraulic systems.
Although the existing double-shaft sealing ring can play a role in effective sealing when in use, the surface of the existing double-shaft sealing ring has larger friction force, and the existing double-shaft sealing ring can be worn after being used for a long time, so that the sealing effect is reduced, and the normal use of equipment is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that the sealing effect of a sealing ring is reduced after long-time use and normal use of equipment is influenced because of large friction force on the surface of the sealing ring in the prior art, and provides a high-speed high-pressure PTFE + B reciprocating sealing ring for a bidirectional shaft.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a two-way axle is with reciprocal sealing washer of high-speed high pressure PTFE + B, includes pull rod, O shape circle and sealing washer, O shape circle cup joints with the outer wall activity of pull rod, just the inner wall of O shape circle sets up with the outer wall laminating of pull rod, the sealing washer is fixed to be cup jointed and to be set up in the outer wall of O shape circle, the annular cavity has been seted up to the inside of sealing washer.
Preferably, the connection mode between the sealing ring and the O-shaped ring is fusion connection.
Preferably, the O-shaped ring is made of PTFE + B material.
Preferably, the sealing ring is made of silicon rubber.
Preferably, the interior of the annular cavity is filled with nitrogen gas.
Preferably, chamfers are arranged on the inner walls of the two sides of the O-shaped ring.
Compared with the prior art, the utility model provides a high-speed high-pressure PTFE + B reciprocating sealing ring for a bidirectional shaft, which has the following beneficial effects:
1. the high-speed high-pressure PTFE + B reciprocating seal ring for the bidirectional shaft can be forced to extrude towards the pull rod to form sealing force by the compression resilience of the O-shaped ring through the arranged O-shaped ring at low pressure.
2. This two-way high-speed high pressure PTFE + B reciprocating seal ring for axle through the sealing washer that is provided with, can lean on the hydraulic oil of hydraulic cylinder to receive the pressure of oil pump to O shape circle and sealing washer when middle and high pressure, increases the deformation of O shape circle and sealing washer, makes O shape circle and sealing washer increase to the extrusion force of pull rod direction to increase sealed face, strengthen sealed effect.
The parts which are not involved in the device are the same as or can be realized by adopting the prior art, the friction force on the surface of the sealing ring is reduced while the sealing effect is ensured, and the damage of the sealing ring is effectively avoided.
Drawings
FIG. 1 is a schematic structural diagram of a high-speed high-pressure PTFE + B reciprocating seal ring for a bidirectional shaft according to the present invention;
fig. 2 is a schematic sectional view showing a connection structure of the sealing ring and the O-ring in fig. 1.
In the figure: 1 pull rod, 2O-shaped ring, 3 sealing ring and 4 annular cavity.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-2, a two-way axle is with reciprocal sealing washer of high-speed high pressure PTFE + B, including pull rod 1, O shape circle 2 and sealing washer 3, O shape circle 2 cup joints with the outer wall activity of pull rod 1, and the inner wall of O shape circle 2 sets up with the outer wall laminating of pull rod 1, and sealing washer 3 is fixed to be cup jointed and sets up in the outer wall of O shape circle 2, and annular cavity 4 has been seted up to the inside of sealing washer 3.
The sealing ring 3 and the O-shaped ring 2 are connected in a fusion mode.
The O-shaped ring 2 is made of PTFE + B materials, so that the sealing effect is enhanced while the friction coefficient of the surface of the O-shaped ring is reduced.
The sealing ring 3 is made of silicon rubber, so that the elasticity of the sealing ring 3 is improved conveniently, and the sealing ring can deform in a productive mode to the maximum extent when the sealing ring is subjected to the pressure of an oil pump.
The inside packing of toroidal cavity 4 has nitrogen gas, is convenient for extrude the inner wall of sealing washer 3 in toroidal cavity 4's inside to strengthen sealing washer 3's sealed effect.
Chamfers are arranged on the inner walls of the two sides of the O-shaped ring 2.
When the O-shaped ring sealing device is used, the O-shaped ring 2 can be forced to extrude towards the pull rod 1 to form sealing force by the compression resilience of the O-shaped ring 2 under low pressure, the O-shaped ring 2 and the sealing ring 3 are deformed by the pressure of an oil pump to the O-shaped ring 2 and the sealing ring 3 by the aid of the sealing ring 3 in the hydraulic oil cylinder under medium and high pressure, and the extrusion force of the O-shaped ring 2 and the sealing ring 3 towards the pull rod 1 is increased, so that the sealing surface is increased, the sealing effect is enhanced, meanwhile, the sealing ring 3 can be deformed firstly by the aid of gas arranged in the annular cavity 4 when the pressure is gradually increased, and abrasion of the O-shaped ring 2 is effectively avoided.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. The utility model provides a two-way axle is with reciprocal sealing washer of high-speed high pressure PTFE + B, includes pull rod (1), O shape circle (2) and sealing washer (3), its characterized in that, O shape circle (2) cup joints with the outer wall activity of pull rod (1), just the inner wall of O shape circle (2) sets up with the outer wall laminating of pull rod (1), sealing washer (3) are fixed to be cup jointed and to be set up in the outer wall of O shape circle (2), toroidal cavity (4) have been seted up to the inside of sealing washer (3).
2. The high-speed high-pressure PTFE + B reciprocating seal ring for the bidirectional shaft as recited in claim 1, wherein the connection mode between the seal ring (3) and the O-shaped ring (2) is fusion connection.
3. The high-speed high-pressure PTFE + B reciprocating seal ring for the bidirectional shaft as recited in claim 1, wherein the O-ring (2) is made of PTFE + B material.
4. The high-speed high-pressure PTFE + B reciprocating seal ring for the bidirectional shaft as recited in claim 1, wherein the seal ring (3) is made of silicon rubber.
5. The high-speed high-pressure PTFE + B reciprocating seal ring for the bidirectional shaft as recited in claim 1, wherein the inside of the annular cavity (4) is filled with nitrogen.
6. The high-speed high-pressure PTFE + B reciprocating seal ring for the bidirectional shaft as recited in claim 1, wherein the inner walls of the two sides of the O-shaped ring (2) are both provided with chamfers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121905417.4U CN215763286U (en) | 2021-08-15 | 2021-08-15 | High-speed high-pressure PTFE + B reciprocating seal ring for bidirectional shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121905417.4U CN215763286U (en) | 2021-08-15 | 2021-08-15 | High-speed high-pressure PTFE + B reciprocating seal ring for bidirectional shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215763286U true CN215763286U (en) | 2022-02-08 |
Family
ID=80074674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121905417.4U Active CN215763286U (en) | 2021-08-15 | 2021-08-15 | High-speed high-pressure PTFE + B reciprocating seal ring for bidirectional shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215763286U (en) |
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2021
- 2021-08-15 CN CN202121905417.4U patent/CN215763286U/en active Active
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