CN209781672U - Seal ring covering metal shell - Google Patents

Abstract

The utility model discloses a cover sealing washer of metal-back relates to sealing washer technical field, is easy to be pricked bad or warp by high-pressure liquid or gas for solving current sealing washer for sealed inefficacy between the part increases maintenance work load, influences the problem of normal production. The utility model discloses a sealing washer, including sealing washer body, upper annular lug, rubber seal ring, threaded fixing groove, the inside of sealing washer body is provided with the cavity, the inside upper end of cavity is provided with annular groove, the inside lower extreme of sealing washer body is installed and is gone up annular lug, install rubber seal ring between annular lug and the lower annular lug, be provided with the thread fixing groove between rubber seal ring and the sealing washer body, the inside of sealing washer body is provided with the cavity, the inside upper end of cavity is provided with annular groove, the inside lower extreme of cavity is provided with annular groove down, the internally mounted of going up annular groove has last fixed block, annular groove's internally mounted has lower fixed block.

Description

Seal ring covering metal shell

Technical Field

the utility model relates to a sealing washer technical field specifically is a cover metal casing's sealing washer.

Background

structurally, oil recovery instrument in the oil field in the pit needs the sealing washer between many parts to seal, and the sealing washer that adopts at present all is made by rubber, and the sealing effect of sealing washer not only directly influences the bearing capacity and the life of assembly, still influences the problem in aspects such as construction safety, so optimize sealing washer structure and material, improve sealing performance, increase of service life is the problem that needs the solution at present urgently.

However, the existing sealing ring is easily damaged or deformed by high-pressure liquid or gas, so that the sealing between the parts fails, the maintenance workload is increased, and the normal production is influenced; thus, the existing requirements are not met, for which we propose a seal ring covering a metal shell.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cover sealing washer of metal-back to the current sealing washer of proposing is easy to be pricked bad or warp by high-pressure liquid or gas in solving above-mentioned background art, makes between the part sealed inefficacy, increases maintenance work load, influences the problem of normal production.

In order to achieve the above object, the utility model provides a following technical scheme: a sealing ring for covering a metal shell comprises a sealing ring body, wherein an upper annular convex block is installed at the upper end of the outer portion of the sealing ring body, a lower annular convex block is installed at the lower end of the outer portion of the sealing ring body, a rubber sealing ring is installed between the upper annular convex block and the lower annular convex block, a thread fixing groove is formed between the rubber sealing ring and the sealing ring body, a cavity is formed in the sealing ring body, an upper annular groove is formed in the upper end of the inner portion of the cavity, a lower annular groove is formed in the lower end of the inner portion of the cavity, an upper fixing block is installed in the upper annular groove, a lower fixing block is installed in the lower annular groove, an elastic piece is installed between the upper fixing block and the lower fixing block, a metal framework is installed in the rubber sealing ring, an upper stellite, an upper epoxy resin coating is arranged outside the upper stellite hard alloy layer, a lower stellite hard alloy layer is arranged inside the sealing ring body, and a lower epoxy resin coating is arranged inside the lower stellite hard alloy layer.

Preferably, the sealing ring body and the upper annular lug are arranged into an integrally formed structure, and the sealing ring body and the lower annular lug are arranged into an integrally formed structure.

Preferably, the rubber sealing ring is connected with the sealing ring body in a sealing mode, and the rubber sealing ring is connected with the metal framework in a sealing mode.

Preferably, the upper annular groove is welded to the upper fixing block, and the lower annular groove is welded to the lower fixing block.

Preferably, the upper annular bump and the lower annular bump are the same size.

Preferably, the metal framework is embedded into the rubber sealing ring.

Compared with the prior art, the beneficial effects of the utility model are that:

1. The elastic part is arranged in the cavity, the elastic part is preferably a spring, and the elasticity of the spring is utilized to ensure that the sealing ring body has good toughness, so that the sealing effect of the sealing ring body is enhanced, and the sealing performance is greatly improved;

2. The utility model discloses a all be provided with the epoxy coating in the outside and the inside of sealing washer, not only have chemical characteristics such as excellent water-fast, resistant greasy dirt, chemical resistance corruption, have attach power well, mechanical strength is high, the wear-resisting function is good, make the protective layer compact, have good rust-resistant effect of corroding, and do not have environmental pollution, can effectively improve the sealing performance and the life of whole sealing washer;

3. The stellite hard alloy layers are arranged outside and inside the sealing ring body, are hard alloys capable of bearing various types of abrasion, corrosion and high-temperature oxidation, have good abrasion resistance and corrosion resistance, can well protect the sealing ring body from being corroded by external fluid or oxygen, and prolong the service life of the sealing ring body;

4. The utility model discloses an upper end in the sealing washer body outside is provided with annular lug, annular lug is provided with down at the outside lower extreme of sealing washer body, make the terminal surface of sealing washer body also have two-layer seal structure, the sealing performance of this novel sealing washer body both ends face has been improved, because inside at rubber seal is provided with metal framework, whole sealing washer is difficult for being broken by liquid or gas thorn when liquid or gas pressure is high, and difficult production is out of shape, strengthen through the screw thread fixed slot, it is difficult for becoming invalid to seal between each part, reduce maintenance work load, can not influence normal production.

Drawings

Fig. 1 is a schematic structural view of a sealing ring covering a metal shell according to the present invention;

Fig. 2 is a schematic structural view of the rubber seal ring of the present invention;

Fig. 3 is a schematic structural diagram of the sealing ring body of the present invention.

In the figure: 1. a seal ring body; 2. an upper annular bump; 3. a rubber seal ring; 4. a cavity; 5. an upper annular groove; 6. a lower annular groove; 7. an upper fixed block; 8. an elastic member; 9. a lower fixed block; 10. a lower annular projection; 11. a thread fixing groove; 12. a metal skeleton; 13. a hard alloy layer of superstai; 14. an upper epoxy resin coating; 15. a lower stellite hard alloy layer; 16. and (5) coating with epoxy resin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the present invention provides an embodiment: a sealing ring for covering a metal shell comprises a sealing ring body 1, wherein an upper annular lug 2 is installed at the upper end of the outer part of the sealing ring body 1, a lower annular lug 10 is installed at the lower end of the outer part of the sealing ring body 1, a rubber sealing ring 3 is installed between the upper annular lug 2 and the lower annular lug 10, a thread fixing groove 11 is arranged between the rubber sealing ring 3 and the sealing ring body 1, a cavity 4 is arranged in the sealing ring body 1, an upper annular groove 5 is arranged at the upper end of the inner part of the cavity 4, a lower annular groove 6 is arranged at the lower end of the inner part of the cavity 4, an upper fixing block 7 is installed in the upper annular groove 5, a lower fixing block 9 is installed in the lower annular groove 6, an elastic part 8 is installed between the upper fixing block 7 and the lower fixing block 9, a metal framework 12 is installed in the rubber sealing, an upper epoxy resin coating 14 is provided on the outer side of the upper stellite hard alloy layer 13, a lower stellite hard alloy layer 15 is provided inside the seal ring body 1, and a lower epoxy resin coating 16 is provided inside the lower stellite hard alloy layer 15.

Further, the sealing ring body 1 and the upper annular bump 2 are arranged to be of an integrally formed structure, the sealing ring body 1 and the lower annular bump 10 are arranged to be of an integrally formed structure, and the structure is more stable.

further, the rubber sealing ring 3 is connected with the sealing ring body 1 in a sealing mode, the rubber sealing ring 3 is connected with the metal framework 12 in a sealing mode, and the whole sealing performance is good.

furthermore, the upper annular groove 5 is connected with the upper fixing block 7 in a welding mode, the lower annular groove 6 is connected with the lower fixing block 9 in a welding mode, the welding connection is good in air tightness and water tightness, the structural rigidity is high, and the structural integrity is good.

Furthermore, the size of the upper annular convex block 2 is the same as that of the lower annular convex block 10, so that the sealing performance of the two end faces of the sealing ring body 1 is improved.

Further, the metal framework 12 is embedded in the rubber seal ring 3, so that the rubber seal ring 3 is not easily damaged by liquid or gas when the liquid or gas pressure is high, and is not easily deformed.

the working principle is as follows: when in use, the upper end outside the sealing ring body 1 is provided with the upper annular lug 2, the lower end outside the sealing ring body 1 is provided with the lower annular lug 10, so that the end surface of the sealing ring body 1 is also provided with a two-layer sealing structure, the sealing performance of the two end surfaces of the sealing ring body 1 is improved, because the metal framework 12 is arranged inside the rubber sealing ring 3, the rubber sealing ring 3 is not easy to be damaged by liquid or gas when the pressure of the liquid or gas is high and is not easy to deform, the upper stellite hard alloy layer 13 and the lower stellite hard alloy layer 15 are arranged outside and inside the sealing ring body 1, the upper stellite hard alloy layer and the lower stellite hard alloy layer are hard alloys which can bear various types of abrasion and corrosion and high-temperature oxidation, have good abrasion resistance and corrosion resistance, can well protect the sealing ring body 1 from the corrosion of external fluid or oxygen, and prolong, the epoxy resin coating not only has excellent chemical characteristics of water resistance, oil stain resistance, chemical corrosion resistance and the like, but also has good attachment force, high mechanical strength and good wear-resisting function, so that the protective layer is compact, the anti-corrosion effect is good, no environmental pollution exists, the sealing performance and the service life of the sealing ring body 1 can be effectively improved, the elastic piece 8 is preferably a spring, and the sealing ring body 1 has good toughness by utilizing the elasticity of the spring.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides a cover sealing washer of metal-back, includes sealing washer body (1), its characterized in that: an upper annular convex block (2) is installed at the upper end of the outer portion of the sealing ring body (1), a lower annular convex block (10) is installed at the lower end of the outer portion of the sealing ring body (1), a rubber sealing ring (3) is installed between the upper annular convex block (2) and the lower annular convex block (10), a thread fixing groove (11) is formed between the rubber sealing ring (3) and the sealing ring body (1), a cavity (4) is formed in the sealing ring body (1), an upper annular groove (5) is formed in the upper end of the inner portion of the cavity (4), a lower annular groove (6) is formed in the lower end of the inner portion of the cavity (4), an upper fixing block (7) is installed in the upper annular groove (5), a lower fixing block (9) is installed in the lower annular groove (6), and an elastic piece (8) is installed between the upper fixing block (7) and the lower, the rubber seal ring is characterized in that a metal framework (12) is mounted inside the rubber seal ring (3), an upper stellite hard alloy layer (13) is arranged outside the seal ring body (1), an upper epoxy resin coating (14) is arranged outside the upper stellite hard alloy layer (13), a lower stellite hard alloy layer (15) is arranged inside the seal ring body (1), and a lower epoxy resin coating (16) is arranged inside the lower stellite hard alloy layer (15).

2. A seal ring covering a metal shell according to claim 1, wherein: the sealing ring is characterized in that the sealing ring body (1) and the upper annular lug (2) are arranged into an integrated structure, and the sealing ring body (1) and the lower annular lug (10) are arranged into an integrated structure.

3. a seal ring covering a metal shell according to claim 1, wherein: the rubber seal ring (3) is connected with the seal ring body (1) in a sealing mode, and the rubber seal ring (3) is connected with the metal framework (12) in a sealing mode.

4. A seal ring covering a metal shell according to claim 1, wherein: the upper annular groove (5) is connected with the upper fixing block (7) in a welding mode, and the lower annular groove (6) is connected with the lower fixing block (9) in a welding mode.

5. A seal ring covering a metal shell according to claim 1, wherein: the upper annular bump (2) and the lower annular bump (10) are the same in size.

6. A seal ring covering a metal shell according to claim 1, wherein: the metal framework (12) is embedded into the rubber sealing ring (3).