CN216896053U - Double-disc spring compression valve rod sealing structure - Google Patents
Double-disc spring compression valve rod sealing structure Download PDFInfo
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- CN216896053U CN216896053U CN202123289017.8U CN202123289017U CN216896053U CN 216896053 U CN216896053 U CN 216896053U CN 202123289017 U CN202123289017 U CN 202123289017U CN 216896053 U CN216896053 U CN 216896053U
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- gland
- disc spring
- valve rod
- wall
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Abstract
The utility model discloses a double-disc spring compression valve rod sealing structure, which relates to the field of double-disc spring compression valve rod sealing and comprises a valve rod, wherein a gland is fixedly connected to the surface of the valve rod, an installation groove is formed in the upper side of the inner wall of the gland, a double-disc spring is fixedly connected to the inner wall of the installation groove, a compression ring is slidably connected to the upper side of the inner wall of the gland, the upper surface of the compression ring is in contact with the lower surface of the double-disc spring, and a sealing assembly is fixedly connected to the lower surface of the compression ring. On the basis of the original structure, the two disc springs are additionally arranged between the pressing cover and the pressing ring, so that the sealing element is elastically extruded, the elastic force of the two disc springs is more stable and durable, the sealing element is always kept elastically extruded in the using process, the abrasion of the sealing element can be compensated by the disc spring force, and the specific sealing pressure is always kept in a normal range, so that the stability of the valve is improved, and potential safety hazards are eliminated.
Description
Technical Field
The utility model relates to the field of double-disc-spring pressing valve rod sealing, in particular to a double-disc-spring pressing valve rod sealing structure.
Background
The belleville spring washer is invented in France J.Belleville more than 100 years ago, and is in the form of conical disc, unlike traditional spring, and has its special function, and its main features are large load, short stroke, small space, convenient combination and use, easy maintenance and replacement, high economic safety, and suitable for precision heavy machinery with small space and large load, its optimum application range of compression stroke is 10% -75% of its maximum compression stroke, and the valve rod is important part of valve for transmission, and is connected with actuating mechanism or handle, and under the action of directly driving valve core to move or rotate so as to implement valve opening and closing or regulation action, and in the course of opening and closing the valve rod not only is moving part, stress part, but also is sealing part, at the same time it is impacted and corroded by medium, and also produces friction with filler, so when selecting valve rod material, the valve rod is a vulnerable part, and the mechanical processing performance and the heat treatment performance of the material are also selected and taken into consideration.
Most of ball valve rod seals used in petrochemical industry at present are bolt extrusion and penetration type, the method is too mechanical, a sealing element cannot be pressed in place under many conditions, and a certain gap is reserved between glands; or the pressure is not practical, the specific sealing pressure is not enough, the sealing effect cannot be achieved, or after the valve is used for a period of time, the valve cannot be compensated due to abrasion and leaks, so that the performance of the valve is unstable, and potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a double-disc spring compression valve rod sealing structure, which aims to solve the problems that the ball valve rod sealing used in the petrochemical industry in the background technology is mostly in a bolt extrusion and insertion type mode, the method is too mechanical, a sealing element cannot be pressed in place under many conditions, and a certain gap is reserved between glands; or the pressure is not practical, the specific sealing pressure is not enough, and the sealing effect cannot be achieved; or after the valve is used for a period of time, the valve is not stable in performance due to leakage caused by the fact that abrasion cannot be compensated, and potential safety hazards exist.
In order to achieve the purpose, the utility model provides the following technical scheme: two dish springs compress tightly valve rod seal structure, including the valve rod, the fixed surface of valve rod is connected with the gland, the mounting groove has been seted up to the upside of gland inner wall, the two dish springs of inner wall fixedly connected with of mounting groove, the inner wall upside sliding connection of gland has the clamping ring, the upper surface of clamping ring and the lower surface of two dish springs contact mutually, the lower fixed surface of clamping ring is connected with seal assembly, on original structure basis, increases twice dish springs between gland and clamping ring, makes the sealing member become the elastic extrusion, and two dish spring elasticity more stable lasting makes the sealing member keep the elastic extrusion in the use always.
Preferably, the gland is made of high-strength synthetic metal titanium alloy materials, so that the part has strong hardness, and the service life is greatly prolonged.
Preferably, the lower surface of the inner wall of the mounting groove is fixedly connected with a packing pad.
Preferably, the inner wall of the gland is provided with a sealing box.
Preferably, the opposite fixedly connected with of gland inner wall seals up the pad, connect sealed the pad and make for PVB synthetic rubber material.
Preferably, the lower surface of the gland is provided with a connecting thread bulge, so that the gland can be conveniently connected with other parts.
The utility model has the technical effects and advantages that:
1. on original structure basis, increase twice dish spring between gland and clamping ring, make the sealing member become elastic extrusion, two dish spring elasticity more stable lasting, make the sealing member keep elastic extrusion in the use always, the wearing and tearing that dish spring power can the compensating sealing member moreover make sealed specific pressure remain at normal scope all the time to improve the stability of valve, eliminated the potential safety hazard.
2. Because of the two dish springs last elastic extrusion, make the sealing member last the deformation compensation valve rod wearing and tearing, prolonged valve life, part itself has very strong hardness, lets life obtain very big promotion, and the gland of being convenient for is connected with other parts moreover.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic view of the overall structure of the present invention.
In the figure: 01. a gland; 02. a double disc spring; 03. pressing a ring; 04. sealing the box; 05. a seal assembly; 06. A valve stem; 07. a filler pad; 08. mounting grooves; 09. connecting the threaded bosses; 10. and connecting the sealing gasket.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a double-disc spring pressing valve rod sealing structure as shown in figure 1-2, which comprises a valve rod 06, wherein the surface of the valve rod 06 is fixedly connected with a gland 01, the upper side of the inner wall of the gland 01 is provided with an installation groove 08, the inner wall of the installation groove 08 is fixedly connected with a double-disc spring 02, the upper side of the inner wall of the gland 01 is connected with a press ring 03 in a sliding way, the upper surface of the press ring 03 is mutually contacted with the lower surface of the double-disc spring 02, the lower surface of the press ring 03 is fixedly connected with a sealing component 05, on the basis of the original structure, two disc springs are added between the gland 01 and the pressure ring 03, so that the sealing element is elastically extruded, the elastic force of the double disc springs 02 is more stable and durable, the sealing element is kept elastically extruded all the time in the use process, and the disc spring force can compensate the abrasion of the sealing element, so that the sealing specific pressure is always kept in a normal range, the stability of the valve is improved, and potential safety hazards are eliminated.
As shown in fig. 1 and 2, the gland 01 is made of high-strength synthetic metal titanium alloy material, so that the part itself has strong hardness, the service life is greatly prolonged, the lower surface of the inner wall of the mounting groove 08 is fixedly connected with a packing pad 07, the inner wall of the gland 01 is provided with a sealing box 04, the opposite fixedly connected with connecting sealing gasket 10 of the inner wall of the gland 01 is made of PVB synthetic rubber material, the lower surface of the gland 01 is provided with connecting thread protrusions 09, and the gland 01 is convenient to connect with other parts.
The working principle of the utility model is as follows: install the gasket 07, seal assembly 05 and clamping ring 03 in sealed box 04, gasket 07 installs the lower extreme at seal assembly 05, the clamping ring 03 is installed in the upper end of seal assembly 05, two dish springs 02 are installed between clamping ring 03 and gland 01, gland 01's power is used on clamping ring 03 through two dish springs 02, seal assembly 05 forms certain specific pressure with sealed box 04 and valve rod 06 under the extrusion of clamping ring 03, thereby realize the sealed between seal assembly 05 and sealed box 04 and the valve rod 06. If the valve is under the long-term service condition, seal assembly 05 is worn and torn by valve rod 06, and accessible two dish spring 02 continue to extrude and make seal assembly 05 warp and compensate, make the sealed specific pressure between seal assembly 05 and the valve rod 06 remain in normal range all the time, can improve valve seal's stability to the life of valve has been prolonged.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (6)
1. Two dish springs compress tightly valve rod seal structure, including valve rod (06), its characterized in that: the fixed surface of valve rod (06) is connected with gland (01), mounting groove (08) have been seted up to the upside of gland (01) inner wall, the two dish springs (02) of inner wall fixedly connected with of mounting groove (08), the inner wall upside sliding connection of gland (01) has clamping ring (03), the upper surface of clamping ring (03) and the lower surface of two dish springs (02) contact each other, the lower fixed surface of clamping ring (03) is connected with seal assembly (05).
2. The double disc spring packing valve stem seal structure of claim 1, wherein: the gland (01) is made of a high-strength synthetic metal titanium alloy material.
3. The double disc spring packing valve stem seal structure of claim 1, wherein: and a packing pad (07) is fixedly connected to the lower surface of the inner wall of the mounting groove (08).
4. The double disc spring packing valve stem seal structure of claim 1, wherein: and a sealing box (04) is arranged on the inner wall of the gland (01).
5. The double disc spring packing valve stem seal structure of claim 1, wherein: the opposite fixedly connected with of gland (01) inner wall seals up (10) with connecting, it seals up (10) and makes for PVB synthetic rubber material to connect.
6. The double disc spring packing valve stem seal structure of claim 1, wherein: the lower surface of the gland (01) is provided with a connecting thread bulge (09).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123289017.8U CN216896053U (en) | 2021-12-25 | 2021-12-25 | Double-disc spring compression valve rod sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123289017.8U CN216896053U (en) | 2021-12-25 | 2021-12-25 | Double-disc spring compression valve rod sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216896053U true CN216896053U (en) | 2022-07-05 |
Family
ID=82208249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123289017.8U Active CN216896053U (en) | 2021-12-25 | 2021-12-25 | Double-disc spring compression valve rod sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216896053U (en) |
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2021
- 2021-12-25 CN CN202123289017.8U patent/CN216896053U/en active Active
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