CN212839389U

CN212839389U - Dustproof sealing ring

Info

Publication number: CN212839389U
Application number: CN202021815996.9U
Authority: CN
Inventors: 叶水生
Original assignee: Foshan Yuanshi Hydraulic Seals Science And Technology Co ltd
Current assignee: Foshan Yuanshi Hydraulic Seals Science And Technology Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-03-30
Anticipated expiration: 2030-08-26

Abstract

The utility model discloses a dustproof sealing ring, include: the sealing ring comprises a sealing ring body, a first O-shaped ring and a second O-shaped ring which are the same in diameter, wherein the sealing ring body is provided with an upper sealing end, a left sealing end, a right sealing end and a lower sealing end, the left sealing end and the right sealing end are respectively perpendicular to the upper sealing end, the left sealing end is perpendicular to the lower sealing end, the thickness of the right sealing end is smaller than that of the left sealing end, the first O-shaped ring and the second O-shaped ring are arranged on the outer side of the upper sealing end side by side at intervals, a V-shaped groove is formed in one side of the lower sealing end, and the V-shaped groove is connected with the right sealing end to form a sealing lip. Set up two O type circles side by side, isostatic pressure better, the invasion of dirt and dust can effectively be prevented to the sealing washer body, lower sealed end and seal lip and piston rod contact, and the fluid accessible of leaking seals end and seal lip under and, and dustproof effect is with sealed effectual.

Description

Dustproof sealing ring

Technical Field

The utility model relates to a dustproof sealing ring.

Background

The importance of the sealing rings of the prior art machines is self-evident in determining the transmission properties of fluids and gases and the quality of the sealed products in industrial automation.

At present, a sealing device between hydraulic/pneumatic elements usually only selects a single sealing element such as a sealing ring, but the structure arrangement has the problems of poor corrosion resistance, dust resistance, sealing performance and the like.

SUMMERY OF THE UTILITY MODEL

According to the utility model discloses an aspect, a dustproof sealing ring, include: the sealing ring comprises a sealing ring body, a first O-shaped ring and a second O-shaped ring which are the same in diameter, wherein the sealing ring body is provided with an upper sealing end, a left sealing end, a right sealing end and a lower sealing end, the left sealing end and the right sealing end are respectively perpendicular to the upper sealing end, the left sealing end is perpendicular to the lower sealing end, the thickness of the right sealing end is smaller than that of the left sealing end, the first O-shaped ring and the second O-shaped ring are arranged on the outer side of the upper sealing end side by side at intervals, a V-shaped groove is formed in one side of the lower sealing end, and the V-shaped groove is connected with the right sealing end to form a sealing lip. Set up two O type circles side by side, balanced pressure better, the invasion of dirt and dust can effectively be prevented to the sealing washer body, and the contact of seal lip and piston rod, the fluid accessible seal lip of leakage seals, and dustproof effect is with sealed effectual.

In some embodiments, the thickness of the right sealing end is one third of the thickness of the left sealing end.

In some embodiments, the V-groove is an asymmetric V-groove formed from long and short sides. The extrusion elastic deformation is large, and the sealing effect is good.

In some embodiments, the tail end of the long edge is connected with the bottom end of the right sealing end to form a sealing lip. The sealing lip is arranged to seal oil leaked when the piston rod moves.

In some embodiments, the short side tail end is connected with the right end of the lower sealing end.

In some embodiments, the included angle between the long side and the short side is an obtuse angle, and the included angle is 120-150 degrees. The obtuse angle can be set to have larger extrusion gap and anti-extrusion capacity, so that the dustproof and sealing effect is better.

In some embodiments, the sum of the diameter of the first O-ring, the diameter of the second O-ring, and the spacing between the first O-ring and the second O-ring is less than the axial width of the seal ring body.

In some embodiments, the material of the seal ring body is tetrafluoroethylene. The seal ring body achieves the effects of wear resistance, high temperature resistance and corrosion resistance.

In some embodiments, the upper sealing end, the left sealing end, the right sealing end, the lower sealing end, the V-shaped groove and the sealing lip are an integrally molded structure. The integration molding integrity is good, the installation is simple, and the sealing effect is good.

Drawings

Fig. 1 is a schematic cross-sectional view of a dust seal according to an embodiment of the present invention;

fig. 2 is an installation schematic view of a dust seal according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1-2 schematically show a dust seal according to an embodiment of the present invention. As shown in the figure, the utility model discloses a dust seal is used for the dust seal between cylinder body 400 and piston rod 500, piston rod 500 and cylinder body 400 clearance fit, set up the installation slot 410 that is used for installing dust seal on the cylinder body 400. The dustproof sealing ring comprises a sealing ring body 100, a first O-ring 200 and a second O-ring 300 which are the same in diameter, the sealing ring body 100 is provided with an upper sealing end 110, a left sealing end 120, a right sealing end 130 and a lower sealing end 140, the left sealing end 120 and the right sealing end 130 are perpendicular to the upper sealing end 110 respectively, the left sealing end 120 is perpendicular to the lower sealing end 140, the thickness of the right sealing end 130 is smaller than that of the left sealing end 120, the thickness of the right sealing end 130 is one third of that of the left sealing end 120, the first O-ring 200 and the second O-ring 300 are arranged outside the upper sealing end 110 side by side at a certain interval, an asymmetric V-shaped groove 150 is formed in the right side of the lower sealing end 140, and the asymmetric V-shaped groove 150 is formed by

long sides

151 and 152 in the cross section. The tail end of the short side 152 is connected to the right side of the lower sealing end 140, and the tail end of the long side 151 is connected to the bottom end of the right sealing end 130, so as to form a sealing lip 160. The upper portions of the first O-ring 200, the second O-ring 300, the right sealing end 130 and the left sealing end 120 are embedded into the mounting groove 410, the first O-ring 200 and the second O-ring 300 are in clearance fit with the side wall of the mounting groove 410, the upper portions of the right sealing end 130 and the left sealing end 120 are in interference fit with the side wall of the mounting groove 410, and the lower sealing end 140 and the sealing lip 160 are in interference contact with the piston rod 500 and are in interference fit with each other. The dustproof sealing ring is provided with two side-by-side O-shaped rings, pressure can be better balanced, the sealing ring body 100 can effectively prevent dirt and dust from invading, the lower sealing end 140 and the sealing lip 160 are in contact with the piston rod 500, leaked oil can be sealed through the lower sealing end 140 and the sealing lip 160, and the dustproof effect and the sealing effect are good. The asymmetric V-shaped groove 150 has large extrusion elastic deformation and good sealing effect.

In this embodiment, the included angle between the long side 151 and the short side 152 is an obtuse angle, and the included angle is 120 ° to 150 °, and preferably 135 °. The obtuse angle can be set to have larger extrusion gap and anti-extrusion capacity, so that the dustproof and sealing effect is better.

In this embodiment, the sum of the diameter of the first O-ring 200, the diameter of the second O-ring 300, and the distance between the first O-ring 200 and the second O-ring 300 is less than the axial width of the seal ring body 100.

In this embodiment, the material of the seal ring body 100 is tetrafluoroethylene. The seal ring body 100 has the effects of wear resistance, high temperature resistance and corrosion resistance.

In this embodiment, the upper sealing end 110, the left sealing end 120, the right sealing end 130, the lower sealing end 140, the V-shaped groove 150 and the sealing lip 160 are integrally formed. The integration molding integrity is good, the installation is simple, and the sealing effect is good.

The utility model discloses a dustproof sealing ring passes through the effect that the invasion of sealing washer body realization prevented dirt and dust, sets up the pressure of the balanced sealing washer that two O type circles can be better side by side, and non-deformable leaks, and through setting up down sealed end 140 and sealed lip 160, can reach and seal the fluid of leaking simultaneously, and the sealing washer body adopts the tetrafluoroethylene material to make, makes it have wear-resisting, high temperature resistant, corrosion-resistant effect.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. A dust seal ring, comprising: the sealing ring comprises a sealing ring body, a first O-shaped ring and a second O-shaped ring which are the same in diameter, wherein the sealing ring body is provided with an upper sealing end, a left sealing end, a right sealing end and a lower sealing end, the left sealing end and the right sealing end are respectively perpendicular to the upper sealing end, the left sealing end is perpendicular to the lower sealing end, the thickness of the right sealing end is smaller than that of the left sealing end, the first O-shaped ring and the second O-shaped ring are arranged on the outer side of the upper sealing end side by side at intervals, a V-shaped groove is formed in one side of the lower sealing end, and the V-shaped groove is connected with the right sealing end to form a sealing lip.

2. The dust seal of claim 1, wherein the thickness of the right sealing end is one third of the thickness of the left sealing end.

3. The dust seal of claim 1, wherein the V-shaped groove is an asymmetric V-shaped groove formed by long and short sides.

4. The dust seal of claim 3, wherein the end of the long side is connected to the bottom end of the right sealing end to form a sealing lip.

5. The dust seal of claim 3, wherein the short end is connected to the right end of the lower seal end.

6. The dust seal according to claim 3, wherein the included angle between the long side and the short side is an obtuse angle, and the included angle is 120-150 °.

7. The dust seal of claim 1, wherein the sum of the diameter of the first O-ring, the diameter of the second O-ring, and the spacing between the first O-ring and the second O-ring is less than the axial width of the seal body.

8. The dust seal of claim 1, wherein the material of the seal body is tetrafluoroethylene.

9. The dust seal according to any one of claims 1 to 8, wherein the upper sealing end, the left sealing end, the right sealing end, the lower sealing end, the V-shaped groove and the sealing lip are integrally formed.