CN212775562U - Rotary sealing element with framework - Google Patents

Abstract

The utility model discloses a take rotary seal spare of skeleton, include: sealing washer body, skeleton and spring, the sealing washer body includes sealed end, side sealed end and lower sealed end, is connected the C style of calligraphy structure on the right side of opening that forms by last sealed end, side sealed end and lower sealed end, the skeleton is the right angle structure that comprises horizontal segment and vertical section, and the skeleton is hugged closely and is set up at last sealed end and side sealed end inboard, sealed end inboard is equipped with the recess down, the spring sets up in the recess, the sealed end outside is equipped with a sealing lip down. Through the contact of the sealing lip on the sealing washer body and the rotation axis, interference fit, the pressure that interference fit produced and the contractile force of spring produce radial pressure to the rotation axis and reach sealed effect, and the sealing washer body inboard sets up the skeleton, plays the effect of strengthening, makes rotary seal spare can keep shape and tension, is difficult for the pressurized deformation to lead to leaking.

Description

Rotary sealing element with framework

Technical Field

The utility model relates to a take rotary seal spare of skeleton.

Background

With the rapid development of socio-economy, various mechanical devices represent important forces in the production process. But along with the improvement of the popularization and utilization ratio of equipment, the problem of revealing of equipment sealing member is increasingly prominent, and the problem of revealing of sealing member not only influences the normal lubrication and the rotation of axle spare, can cause the serious wearing and tearing of axle spare to destroy even, and then influences the normal operating and the production of equipment, increases the equipment maintenance cost.

The common sealing element selected by the transmission part of the prior equipment has a sealing line, and the sealing performance is poor; the sealing element is in direct contact with the outer surface of the main shaft, the sealing element is easy to wear and deform, and once the sealing element is worn and deformed, equipment leakage can be caused, and the equipment cannot be used. Therefore, a stronger seal is needed to address this problem.

SUMMERY OF THE UTILITY MODEL

According to an aspect of the utility model, a take rotary seal spare of skeleton is provided, include: the sealing ring comprises a sealing ring body, a framework and a spring, wherein the sealing ring body comprises an upper sealing end, a side sealing end and a lower sealing end, the upper sealing end, the side sealing end and the lower sealing end are connected to form a C-shaped structure with an opening on the right side, the framework is of a right-angle structure consisting of a horizontal section and a vertical section, the framework is tightly attached to the inner side of the upper sealing end and the side sealing end, a groove is formed in the inner side of the lower sealing end, the spring is arranged in the groove, and a sealing lip is arranged on the outer side of the lower sealing end. Through the contact of the sealing lip on the sealing washer body and the rotation axis, interference fit, the pressure that interference fit produced and the contractile force of spring produce radial pressure to the rotation axis and reach sealed effect, and the sealing washer body inboard sets up the skeleton, plays the effect of strengthening, makes rotary seal spare can keep shape and tension, is difficult for the pressurized deformation to lead to leaking.

In some embodiments, the sealing lip is shaped as an obtuse triangle, the obtuse angle being 100 ° to 130 °. The obtuse angle can provide larger extrusion gap and anti-extrusion capability, so that better sealing effect can be achieved.

In some embodiments, the horizontal section of the backbone has a radial thickness greater than a radial thickness of the upper sealing end. The thicker framework has enough strength and is not easy to deform, so that the rotary sealing element can keep the shape and the tension.

In some embodiments, the horizontal section of the backbone has an axial width less than an axial width of the upper sealing end. The skeleton parcel is internal at the sealing washer, avoids skeleton direct contact installation slot.

In some embodiments, the inner side of the vertical section of the skeleton is arcuate.

In some embodiments, the bottom end of the vertical section of the carcass is located three quarters of the way inside the side seal ends.

In some embodiments, the groove is a semicircular groove adapted to the diameter of the spring, the lower half of the spring is disposed in the groove, and the upper half of the spring protrudes from the groove.

In some embodiments, an oblique notch is formed outside the free end of the horizontal section of the framework, a lug matched with the oblique notch is formed inside the upper sealing end, and the oblique notch is in contact with the lug.

In some embodiments, the outer side of the connection end of the upper sealing end and the side sealing end is provided with a chamfer with an angle of 30-60 degrees. The chamfer plays a guiding role, and the installation is quicker and more convenient.

In some embodiments, the upper seal end free end is chamfered at an angle of 10 ° to 30 ° from horizontal. The chamfer plays a guiding role, and the installation is quicker and more convenient.

In some embodiments, the outer side of the connecting end of the horizontal section and the vertical section of the framework is provided with a chamfer with an angle of 30-60 degrees.

In some embodiments, the backbone is a polyoxymethylene material. The polyformaldehyde material has high strength and is not easy to deform under pressure.

In some embodiments, the upper seal end, the side seal end, the lower seal end, and the seal lip are integrally molded structures. 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 rotary seal member with a frame according to an embodiment of the present invention;

FIG. 2 is a schematic view of the installation of the rotary skeletal seal of FIG. 1.

Detailed Description

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

Fig. 1-2 schematically illustrate a skeletal rotary seal in accordance with an embodiment of the present invention. As shown in the figures, the utility model discloses a take rotary seal of skeleton is used for the rotary seal between cylinder body 400 and the rotation axis 500, and rotation axis 500 and cylinder body 400 clearance fit set up the installation slot 410 that is used for installing rotary seal on the cylinder body 400. The rotary sealing element with the framework comprises a sealing ring body 100, a framework 200 and a spring 300, wherein the sealing ring body 100 comprises an upper sealing end 110, a side sealing end 120 and a lower sealing end 130, the upper sealing end 110, the side sealing end 120 and the lower sealing end 130 are connected to form a C-shaped structure with an opening on one side, the framework 200 is of a right-angle structure consisting of a horizontal section 210 and a vertical section 220, the framework 200 is tightly attached to the inner sides of the upper sealing end 110 and the side sealing end 120, a groove 131 is formed in the inner side of the lower sealing end 130, the spring 300 is arranged in the groove 131, and a sealing lip 132 is arranged on the outer side of the lower sealing end 130. The upper seal end 110, the side seal end 120 and the lower seal end 130 of the seal ring body 100 are embedded into the installation groove 410, the seal lip 132 is in contact with the rotating shaft 500, interference fit is achieved, the pressure generated by the interference fit and the contraction force of the spring 300 generate radial pressure on the rotating shaft 500 to achieve a sealing effect, the framework 200 is arranged on the inner side of the seal ring body 100 to play a role in reinforcement, the shape and the tension of the rotary seal part can be kept, and the rotary seal part is not prone to being pressed to deform to cause leakage.

In this embodiment, the sealing lip 132 is shaped as an obtuse triangle with the obtuse angle facing outward, and the obtuse angle is 100 ° to 130 °, and preferably 117 °. Because during rotatory sealing washer extrusion installation, rotatory sealing washer is under the condition of the same extrusion volume, rotatory sealing washer is bigger with the area of contact of complex rotation axis 500, sealed effect is better, therefore, when the contained angle sets up to the obtuse angle, under the condition of the same extrusion volume, sealed lip 132 receives the extrusion to produce elastic deformation after, its area of contact with complex rotation axis 500 can be bigger, thereby make sealed effect better, and set up to the obtuse angle and can possess bigger extrusion clearance and anti extrusion ability, consequently, better sealed effect has.

In this embodiment, the radial thickness of the horizontal section 210 of the bobbin 200 is greater than the radial thickness of the upper sealing end 110. The thicker frame 200 has sufficient strength and is not easily deformed, so that the rotary sealing element can maintain the shape and the tension.

In this embodiment, the horizontal section 210 of the bobbin 200 has an axial width smaller than the axial width of the upper sealing end 110. The framework 200 is wrapped in the sealing ring body 100, so that the framework 200 is prevented from directly contacting the mounting groove 410.

In this embodiment, the inner side of the vertical section 220 of the framework 200 is arc-shaped.

In this embodiment, the bottom end of the vertical section 220 of the frame 200 is located at three-quarters of the inner side of the side sealing end 120.

In this embodiment, the groove 131 is a semicircular groove 131 adapted to the diameter of the spring 300, the lower half of the spring 300 is disposed in the groove 131, and the upper half protrudes out of the groove 131.

In this embodiment, an inclined notch 211 is disposed at an outer side of a free end of the horizontal section 210 of the frame 200, a protrusion 111 matched with the inclined notch 211 is disposed at an inner side of the upper sealing end 110, and the inclined notch 211 contacts with the protrusion 111.

In this embodiment, the outer side of the connection end of the upper sealing end 110 and the side sealing end 120 is provided with a chamfer angle of 30-60 °, preferably 45 °. The chamfer plays a guiding role, and the installation is quicker and more convenient.

In this embodiment, the free end of the upper sealing end 110 is chamfered at an angle of 10 ° to 30 °, preferably 15 °, to the horizontal. The chamfer plays a guiding role, and the installation is quicker and more convenient.

In this embodiment, the outer side of the connection end of the horizontal section 210 and the vertical section 220 of the framework 200 is provided with a chamfer angle, and the angle is 30-60 degrees, preferably 45 degrees.

In this embodiment, the skeleton 200 is made of polyoxymethylene material. The Polyformaldehyde (POM) material has high strength and is not easy to deform under pressure as a reinforcing structure.

In this embodiment, the upper sealing end 110, the side sealing end 120, the lower sealing end 130 and the sealing lip 132 are integrally formed. The integration molding integrity is good, the installation is simple, and the sealing effect is good.

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 (10)

1. A rotary seal with a backbone, comprising: the sealing ring comprises a sealing ring body, a framework and a spring, wherein the sealing ring body comprises an upper sealing end, a side sealing end and a lower sealing end, the upper sealing end, the side sealing end and the lower sealing end are connected to form a C-shaped structure with an opening on the right side, the framework is of a right-angle structure consisting of a horizontal section and a vertical section, the framework is tightly attached to the inner side of the upper sealing end and the side sealing end, a groove is formed in the inner side of the lower sealing end, the spring is arranged in the groove, and a sealing lip is arranged on the outer side of the lower sealing end.

2. The frameless rotary seal of claim 1, wherein the seal lip is shaped as an obtuse triangle, the obtuse angle being between 100 ° and 130 °.

3. The framed rotary seal of claim 1, wherein the horizontal segment of the frame has a radial thickness greater than a radial thickness of the upper seal end, and the horizontal segment of the frame has an axial width less than an axial width of the upper seal end.

4. The framed rotary seal of claim 1 wherein the inner side of the vertical section of the frame is arcuate.

5. The rimmed rotary seal of claim 1, wherein the bottom end of the vertical section of the rim is located three quarters of the way inside the side seal end, the rim being of polyoxymethylene material.

6. The framed rotary seal of claim 1 wherein the groove is a semi-circular groove adapted to the diameter of the spring, the spring having a lower half disposed within the groove and an upper half protruding from the groove.

7. The rotary seal with a frame as claimed in claim 1, wherein the outer side of the free end of the horizontal section of the frame is provided with an oblique notch, the inner side of the upper sealing end is provided with a projection adapted to the oblique notch, and the oblique notch contacts with the projection.

8. The rimmed rotary seal of claim 1, wherein the outer side of the connecting end of the upper seal end and the side seal end is chamfered at an angle of 30 ° to 60 °, and the outer side of the free end of the upper seal end is chamfered at an angle of 10 ° to 30 ° to the horizontal.

9. The rotary seal with a backbone of claim 1, wherein the outside of the connecting end of the horizontal and vertical segments of the backbone is chamfered with an angle of 30 ° -60 °.

10. The skeletal rotary seal of any one of claims 1 to 9, wherein the upper seal end, the side seal end, the lower seal end and the seal lip are of integrally molded construction.

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