CN111536235A

CN111536235A - Sawtooth sealing ring

Info

Publication number: CN111536235A
Application number: CN202010530395.1A
Authority: CN
Inventors: 张乐全; 杨金胜; 王广; 运广琪; 王东福
Original assignee: Bensv Valve Stock Co ltd
Current assignee: Bensv Valve Stock Co ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2020-08-14

Abstract

The invention provides a sawtooth sealing ring, which belongs to the technical field of sealing of retractors and comprises a first sealing ring and a second sealing ring, wherein the first sealing ring is sleeved on the outer side of the second sealing ring, the left lower end of the first sealing ring is contacted with the left upper end of the second sealing ring, the left lower end of the first sealing ring is provided with a first round angle, the left upper end of the second sealing ring is provided with a second round angle, the upper surface of the first sealing ring is provided with a first bulge, the shape of the first bulge is trapezoidal, the height of the lower surface of the first sealing ring is uniformly reduced from right to left, the lower surface of the second sealing ring is provided with a second bulge, the shape of the second bulge is trapezoidal, and the height of the upper surface of the second sealing ring is. The end face of the sealing ring is small in size, convenient to install and good in sealing effect.

Description

Sawtooth sealing ring

Technical Field

The invention belongs to the technical field of expansion joint sealing, and relates to a sawtooth sealing ring.

Background

The O-shaped sealing ring is mainly used for static sealing and reciprocating sealing, is suitable for a hydro-pneumatic system, various mechanical equipment and components, and plays a sealing role in a static or moving state in specified pressure, temperature and different liquid and gas media.

The existing expansion joint sealing ring generally uses an O-shaped sealing ring, but the existing O-shaped sealing ring has poor sealing performance, is easy to roll and twist, and causes damage, so that the problem is solved by a novel O-shaped sealing ring.

Disclosure of Invention

The invention aims to solve the problem of a sawtooth sealing ring, belongs to the technical field of expansion joint sealing, and has the advantages of small end face size of the sealing ring, convenience in installation and good sealing effect.

In order to solve the technical problems, the invention adopts the technical scheme that: sawtooth sealing washer belongs to the sealed technical field of the expansion bend, including first sealing washer and second sealing washer, first sealing washer cover is in the outside of second sealing washer, the upper left end contact of the lower left end of first sealing washer and second sealing washer, the lower left end of first sealing washer has first fillet, the upper left end of second sealing washer has the second fillet, the upper surface of first sealing washer has first arch, first bellied shape is trapezoidal, the lower surface of first sealing washer is from the right side highly even reduction left side, the lower surface of second sealing washer has the second arch, the bellied shape of second is trapezoidal, the upper surface of second sealing washer highly even improvement from a left side to right side.

Furthermore, there are 2 first bulges, the shape of first bulge is right trapezoid, and the left side of first bulge is straight waist, and the right side of first bulge is oblique waist, and the contained angle of oblique waist and horizontal direction is between 30 ~ 45.

Furthermore, there are 2 second bulges, the shape of the second bulge is right trapezoid, the left side of the second bulge is oblique waist, the right side of the second bulge is straight waist, and the included angle between the oblique waist and the horizontal direction is 70-85 degrees.

Further, the slope of the lower surface of the first sealing ring is larger than that of the upper surface of the second sealing ring.

Further, still include the expansion bend body, pass the power screw rod, pass power nut, gland, stub pipe flange, gland nut and gland double-screw bolt, the stub pipe flange welding is inboard at the expansion bend body, pass the upper end that the power screw rod runs through the expansion bend body and the upper end of gland, pass the power nut and will pass the power screw rod and fix on the expansion bend body, the gland double-screw bolt runs through the lower extreme of gland, the left end and the expansion bend body threaded connection of gland double-screw bolt, the right-hand member at the gland double-screw bolt and the right flank of hugging closely the gland are installed to the gland nut.

Furthermore, the upper surface of the short pipe flange is provided with 2 second grooves, the second bulges are embedded in the second grooves, the lower end of the gland is provided with 2 first grooves, and the first bulges are embedded in the first grooves.

Compared with the prior art, the invention has the advantages and positive effects as follows:

1. the end face of the sealing ring is small in size, convenient to install and good in sealing effect.

2. The number of the first bulges is 2, the shape of the first bulge is a right trapezoid, the left side of the first bulge is a straight waist, the right side of the first bulge is an oblique waist, the included angle between the oblique waist and the horizontal direction is 30-45 degrees, the number of the second bulge is 2, the shape of the second bulge is a right trapezoid, the left side of the second bulge is an oblique waist, the right side of the second bulge is a straight waist, and the included angle between the oblique waist and the horizontal direction is 70-85 degrees, so that the contact area is increased, and the sealing effect is improved.

3. According to the invention, the slope of the lower surface of the first sealing ring is greater than that of the upper surface of the second sealing ring, so that when the first sealing ring and the second sealing ring are extruded, the lower surface of the first sealing ring and the upper surface of the second sealing ring are more tightly attached, and the sealing effect is better.

4. The upper surface of the short pipe flange is provided with 2 second grooves, the second bulges are embedded in the second grooves, the lower end of the gland is provided with 2 first grooves, the first bulges are embedded in the first grooves, and the sealing strip is not easy to loosen.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is an enlarged view of section A of the serrated seal ring of the present invention;

FIG. 2 is a vertical cross-sectional view of a first seal ring of the serrated seal ring of the present invention;

FIG. 3 is a vertical cross-sectional view of a second seal ring of the serrated seal ring of the present invention;

fig. 4 is a vertical sectional view of the retractor of the serrated seal ring of the present invention.

Reference numerals:

1. a first seal ring; 2. a second seal ring; 3. a retractor body; 4. a force transmission screw rod; 5. a force transfer nut; 6. a gland; 7. a stub pipe flange; 8. a gland nut; 9. a gland stud; 11. a first protrusion; 12. a first rounded corner; 21. a second protrusion; 22. a second rounded corner; 31. a first groove; 32. a second groove.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The following detailed description of specific embodiments of the invention refers to the accompanying drawings.

As shown in fig. 1 to 4, the invention relates to a sawtooth sealing ring, which belongs to the technical field of sealing of retractors, and comprises a first sealing ring 1 and a second sealing ring 2, wherein the first sealing ring 1 is sleeved outside the second sealing ring 2, the left lower end of the first sealing ring 1 is in contact with the left upper end of the second sealing ring 2, the left lower end of the first sealing ring 1 is provided with a first fillet 12, the left upper end of the second sealing ring 2 is provided with a second fillet 22, the upper surface of the first sealing ring 1 is provided with a first bulge 11, the first bulge 11 is trapezoidal in shape, the height of the lower surface of the first sealing ring 1 is uniformly reduced from right to left, the lower surface of the second sealing ring 2 is provided with a second bulge 21, the second bulge 21 is trapezoidal in shape, the height of the upper surface of the second sealing ring 2 is uniformly increased from left to right, multi-point multi-surface sealing.

Preferably, there are 2 first protrusions 11, the shape of the first protrusion 11 is a right trapezoid, the left side of the first protrusion 11 is a straight waist, the right side of the first protrusion 11 is an oblique waist, an included angle between the oblique waist and the horizontal direction is between 30 ° and 45 °, preferably, there are 2 second protrusions 21, the shape of the second protrusion 21 is a right trapezoid, the left side of the second protrusion 21 is an oblique waist, the right side of the second protrusion 21 is a straight waist, and an included angle between the oblique waist and the horizontal direction is between 70 ° and 85 °, so that a contact area is increased, and a sealing effect is improved.

Preferably, the slope of the lower surface of the first sealing ring 1 is greater than the slope of the upper surface of the second sealing ring 2, and when the first sealing ring 1 and the second sealing ring 2 are squeezed, the lower surface of the first sealing ring 1 and the upper surface of the second sealing ring 2 are more tightly fitted, so that the sealing effect is better.

Preferably, the short pipe flange 7 is welded on the inner side of the expansion piece body 3, the force transmission screw rod 4 penetrates through the upper end of the expansion piece body 3 and the upper end of the gland 6, the force transmission nut 5 fixes the force transmission screw rod 4 on the expansion piece body 3, the gland stud 9 penetrates through the lower end of the gland 6, the left end of the gland stud 9 is in threaded connection with the expansion piece body 3, the gland nut 8 is installed at the right end of the gland stud 9 and clings to the right side face of the gland 6, preferably, the upper surface of the short pipe flange 7 is provided with 2 second grooves 32, the second grooves 32 are provided with 2 second bulges 21 embedded in the second grooves 32, the lower end of the gland 6 is provided with a first groove 31, the first grooves 31 are provided with 2 first bulges 11 embedded in the first groove 31, and the sealing strip is not easy to loosen.

In the actual working process, the first protrusion 11 of the first sealing ring 1 is embedded in the first groove 31, the second protrusion 21 of the second sealing ring 2 is embedded in the second groove 32, and when the gland 6 is tightly pressed, the first sealing ring 1 and the second sealing ring 2 are more tightly pressed with the gland 6 and the short pipe flange 7, are not easy to loosen, and ensure higher sealing performance.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims

1. Sawtooth sealing washer, its characterized in that: including first sealing washer (1) and second sealing washer (2), first sealing washer (1) cover is in the outside of second sealing washer (2), the left lower extreme of first sealing washer (1) and the upper left end contact of second sealing washer (2), the left lower extreme of first sealing washer (1) has first fillet (12), the upper left end of second sealing washer (2) has second fillet (22), the upper surface of first sealing washer (1) has first arch (11), the shape of first arch (11) is trapezoidal, the lower surface of first sealing washer (1) is from the right side highly even reduction left, the lower surface of second sealing washer (2) has second arch (21), the shape of second arch (21) is trapezoidal, the upper surface of second sealing washer (2) highly even improvement from the left side right side.

2. The serrated seal ring according to claim 1, wherein: the number of the first bulges (11) is 2, the first bulges (11) are in the shape of a right trapezoid, the left sides of the first bulges (11) are straight waists, the right sides of the first bulges (11) are oblique waists, and the included angle between the oblique waists and the horizontal direction is 30-45 degrees.

3. The serrated seal ring according to claim 1, wherein: the number of the second bulges (21) is 2, the shape of the second bulges (21) is a right trapezoid, the left side of the second bulges (21) is an oblique waist, the right side of the second bulges (21) is a straight waist, and the included angle between the oblique waist and the horizontal direction is 70-85 degrees.

4. The serrated seal ring according to claim 1, wherein: the slope of the lower surface of the first sealing ring (1) is larger than that of the upper surface of the second sealing ring (2).

5. The serrated seal ring according to any one of claims 1 to 4, characterized in that: still include expansion bend body (3), biography power screw rod (4), biography power nut (5), gland (6), stub pipe flange (7), gland nut (8) and gland double-screw bolt (9), welding in expansion bend body (3) is inboard in stub pipe flange (7), pass the upper end that upper end and gland (6) of expansion bend body (3) are run through to biography power screw rod (4), pass power nut (5) and will pass power screw rod (4) and fix on expansion bend body (3), gland double-screw bolt (9) run through the lower extreme of gland (6), the left end and expansion bend body (3) threaded connection of gland double-screw bolt (9), right-hand member at gland double-screw bolt (9) and the right flank of hugging closely gland (6) are installed in gland nut (8).

6. The serrated seal ring according to claim 5, wherein: the upper surface of quarter butt flange (7) has second recess (32), and second recess (32) have 2, and second arch (21) inlay is established in second recess (32), and the lower extreme of gland (6) has first recess (31), and first recess (31) have 2, and first arch (11) inlay is established in first recess (31).