CN213929445U

CN213929445U - Extrusion sealing O-shaped ring

Info

Publication number: CN213929445U
Application number: CN202023209526.0U
Authority: CN
Inventors: 姜永胜; 张文靖; 张晶
Original assignee: Dandong Chenghai Machinery Manufacturing Co ltd
Current assignee: Dandong Chenghai Machinery Manufacturing Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-08-10
Anticipated expiration: 2030-12-28

Abstract

The utility model relates to a machinery basic unit technical field, in particular to extrusion seal O type ring, including ring body and through-hole, its characterized in that: the two ends of the ring body are annular end plates, an extrusion sealing edge ring is fixed between the two end plates and comprises a plurality of groups of integrally connected sealing edge rings, the section of the special seal is in a continuous sine curve shape, two adjacent wave crests are connected by an annular division bar, and the root part of the division bar connected with the sealing edge ring is an inward-concave arc-shaped reinforcing root; all of the peaks seal against the seal assembly. The utility model discloses can guarantee when sealed O shape ring receives the extrusion to take place the distortion, sealed limbal ring all the time and the seal assembly between sealed laminating avoid causing the leakage, guarantee the holistic leakproofness of mechanical seal effectively. The design of the division bar is that the sealing edge rings at the two ends of the division bar play a role of pushing, so that the sealing edge rings can extend and seal in the radial direction under the condition that the whole volume is not changed.

Description

Extrusion sealing O-shaped ring

Technical Field

The utility model relates to a mechanical basis spare technical field, in particular to extrusion seal O type ring.

Background

A sealing O-ring is a circular mechanical gasket, as shown in fig. 1, which is an annular elastic ring body 1 with a through hole 2, the cross section of which is usually circular, and is generally fixed in a groove, and is compressed by two or more components (such as a moving ring, a stationary ring, a moving ring seat, etc.) during assembly, thereby creating a sealed interface. However, when the mechanical seal is subjected to external force, such as the oil pump is under insufficient load, moisture in the medium is gasified or the operation is not easy due to unskilled operators, pump evacuation often occurs, the oil pump generates evacuation force, the pressing force between the assembly and the sealing O-ring is not balanced, occasionally, the sealing O-ring is distorted due to the pressing, the sealing edge 3 cannot be in sealing fit with the assembly, leakage is formed, and the sealing performance of the whole mechanical seal is affected.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model discloses an extrusion sealing O type ring.

The specific technical scheme is as follows:

an extrusion sealing O-shaped ring comprises a ring body and a through hole, wherein two ends of the ring body are provided with annular end plates, an extrusion sealing edge ring is fixed between the two end plates and comprises a plurality of groups of integrally connected sealing edge rings, the section of a special-shaped seal is in a continuous sine curve shape, two adjacent wave crests are connected by an annular division bar, and the root part of the division bar connected with the sealing edge ring is an inward concave arc-shaped reinforcing root; all of the peaks seal against the seal assembly.

The end plate, the division bars and the sealing edge ring are all made of elastic materials.

The division bar is located at 1/2 midway between the peaks and valleys.

The section of the end plate is smaller than that of the sealing edge ring and accounts for 90% of the sectional area of the sealing edge ring.

Compared with the prior art, the utility model discloses following beneficial technological effect has:

the utility model discloses can guarantee when sealed O shape ring receives the extrusion to take place the distortion, sealed limbal ring all the time and the seal assembly between sealed laminating avoid causing the leakage, guarantee the holistic leakproofness of mechanical seal effectively. The design of the division bar is that the sealing edge rings at the two ends of the division bar play a role of pushing, so that the sealing edge rings can extend and seal in the radial direction under the condition that the whole volume is not changed. The section of the end plate is smaller than that of the sealing edge ring, accounts for 90% of the sectional area of the sealing edge ring, and can be used as buffer of the end part, and local stress is overlarge or excessively concentrated. The position of the division bar is located 1/2 in the middle of the wave crest and the wave trough, the root of the division bar connected with the sealing edge ring is an inward concave arc-shaped reinforcing root, the widest part of the left and right adjacent sealing edge rings 4 is just pushed, and the pushing deformation is more obvious.

Drawings

FIG. 1 is a schematic view of a conventional sealing O-ring structure;

FIG. 2 is a schematic view of the structure of the extrusion sealing O-ring of the present invention;

FIG. 3 is an enlarged partial view of the compression seal O-ring of FIG. 2;

FIG. 4 is a schematic view of the operation of the extrusion seal O-ring of the present invention;

in the figure, 1-ring; 2-a through hole; 3, sealing the edge; 4, sealing a flange ring; 5-parting beads; 6-end plate; 7-a seal assembly; 8-wave crest; 9-strengthen the roots.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings, but the scope of the present invention is not limited to the accompanying drawings.

Fig. 2 is the utility model discloses extrusion seal O-ring structure schematic diagram, and fig. 3 is the local enlarged schematic diagram of fig. 2 extrusion seal O-ring, as shown in the figure: the utility model discloses an extrusion sealing O-shaped ring, including ring body 1 and through-hole 2, ring body 1 both ends are annular end plate 6, fixed extrusion sealing edge ring 4 between two end plates 6, extrusion sealing edge ring includes the sealed edge ring 4 of multiunit body coupling, and the cross-section of abnormal shape sealing 3 is continuous sinusoidal curve shape, connects by an annular division bar 5 between two adjacent crest 8, and the root that division bar 5 and sealed edge ring 4 are connected is the enhancement root 9 of indent arc; all the peaks 8 seal against the sealing assembly 7. The end plate 6, the division bar 5 and the sealing edge ring 4 are all made of elastic materials. The division bar 5 is located at the middle 1/2 between the peaks and valleys. The section of the end plate 6 is smaller than that of the sealing edge ring 4 and accounts for 90% of the sectional area of the sealing edge ring 4.

Fig. 4 is the utility model discloses extrusion seal O-ring extrusion seal work schematic diagram, as shown in the figure, during the use, when receiving external force: the radial stress is directly born by the wave crest 8 of the sealing edge ring 4; axial atress is exerted on end plate 6, and end plate 6 is elastic material, and the atress warp, inwards further extrudees sealing flange ring 4, and parting bead 5 receives the extrusion, strengthens root 9 and pushes away the outside deformation of sealing flange ring 4, continues to extrude with seal assembly 7 and seal until external force disappears, and sealing flange ring 4 and parting bead 5 reconversion. The utility model discloses can guarantee when sealed O shape ring receives the extrusion to take place the distortion, sealed limbal ring 4 all the time and the seal assembly 7 between sealed laminating avoid causing the leakage, the holistic leakproofness of powerful guarantee mechanical seal. The design of the division bar 5 is that the sealing edge rings 4 at two ends of the division bar 5 play a role of pushing, so that the sealing edge rings 4 can extend and seal in the radial direction under the condition that the whole volume is unchanged.

Claims

1. The utility model provides a extrusion seal O type ring, includes ring body and through-hole, its characterized in that: the two ends of the ring body are annular end plates, an extrusion sealing edge ring is fixed between the two end plates and comprises a plurality of groups of integrally connected sealing edge rings, the section of the special seal is in a continuous sine curve shape, two adjacent wave crests are connected by an annular division bar, and the root part of the division bar connected with the sealing edge ring is an inward-concave arc-shaped reinforcing root; all of the peaks seal against the seal assembly.

2. The squeeze-seal O-ring of claim 1, wherein: the end plate, the division bars and the sealing edge ring are all made of elastic materials.

3. The squeeze-seal O-ring of claim 1, wherein: the division bar is located at 1/2 midway between the peaks and valleys.

4. The squeeze-seal O-ring of claim 1, wherein: the section of the end plate is smaller than that of the sealing edge ring and accounts for 90% of the sectional area of the sealing edge ring.