CN210830434U

CN210830434U - Corrosion-resistant hard alloy sealing ring

Info

Publication number: CN210830434U
Application number: CN201921730521.7U
Authority: CN
Inventors: 刘敏锋; 孙乐天; 周方圆; 孙廷枢
Original assignee: Shandong Ruixin Tungsten O Ltd
Current assignee: Shandong Ruixin Tungsten O Ltd
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2020-06-23
Anticipated expiration: 2029-10-16

Abstract

The utility model provides an anticorrosive type carbide sealing ring, including the ring body, the ring body center is equipped with the through-hole, and ring body outside surface is equipped with the screw thread section, and the ring body passes through the anticorrosive ring of screw thread section threaded connection, and anticorrosive ring inboard is equipped with the screw thread section that corresponds, and anticorrosive ring is convex annular structure. Through the technical scheme of the utility model, the utility model discloses anticorrosive ring, anticorrosive ring adopt polytetrafluoroethylene to be the material, because polytetrafluoroethylene has all strong acid, alkali, strong oxidizer of nai, does not also take place the performance of effect with various organic solvent, consequently can obstruct the corruption of corrosivity composition to the sealing ring in the external pollutant effectively to can change anticorrosive ring through the screw thread. The ring body is made of hard alloy materials, and is used as a mechanical sealing element product which is most widely applied, and the hard alloy sealing ring has high hardness and good corrosion resistance and is widely applied to petrochemical industry and other various sealing industries.

Description

Corrosion-resistant hard alloy sealing ring

Technical Field

The utility model relates to a sealing member field, particularly, in particular to anticorrosive type carbide sealing ring.

Background

The sealing ring is an annular sealing element with a notch, and is tightly propped against the inner hole wall of the static element by the elasticity of the pressed sealing ring to play a sealing role. The sealing ring is an annular sealing element with a notch, the sealing ring is placed in an annular groove of the sleeve, the sleeve and the shaft rotate together, and the sealing ring is tightly abutted against the inner hole wall of the static element by the elasticity of the pressed notch, so that the sealing effect can be achieved.

When the sealing ring is made commonly, in the operation of equipment, a conveyed medium often contains corrosive components, so that the corrosion of the sealing ring can be caused, the sealing effect cannot be realized, the abrasion of the sealing ring can be caused, and the corrosion to the inside of the equipment is increased due to external pollution. When the part is replaced by staff, the part is difficult to disassemble due to serious corrosion, thereby increasing the labor intensity of the staff.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a remedy prior art not enough, the utility model provides an anticorrosive type carbide sealing ring.

The utility model discloses a realize through following technical scheme: the utility model provides an anticorrosive type carbide sealing ring, the ring body center is equipped with the through-hole, and the surface is equipped with the external screw thread section outside the ring body, and the ring body passes through screw thread section threaded connection anticorrosive ring, and anticorrosive ring inboard is equipped with corresponding internal thread section, and anticorrosive ring is convex annular structure.

Preferably, the ring body is made of hard alloy.

Preferably, the surface of the external thread section of the ring body is coated with epoxy resin glue and is bonded with the connected anticorrosion ring.

Preferably, a key groove is formed in the inner peripheral wall of the through hole, and an opening of the key groove faces the axial through hole.

Preferably, the number of the key grooves is four, and the key grooves are symmetrically arranged relative to the axis of the through hole.

Preferably, the material of the anti-corrosion ring is polytetrafluoroethylene.

Preferably, the thickness of the thickest part of the arc top of the corrosion prevention ring is 10 mm.

The utility model discloses owing to adopted above technical scheme, compare with prior art and make it have following beneficial effect: the utility model discloses having installed the anticorrosive ring that uses polytetrafluoroethylene as the material in the ring body outside connection, anticorrosive ring adopts polytetrafluoroethylene to be the material, because polytetrafluoroethylene has all strong acid, alkali, strong oxidizer of nai, does not take place the performance of effect yet with various organic solvent, consequently can obstruct the corruption of corrosivity composition to the sealing ring in the external pollutant effectively to can change anticorrosive ring through the screw thread. The ring body is made of hard alloy materials, and is used as a mechanical sealing element product which is most widely applied, and the hard alloy sealing ring has high hardness and good corrosion resistance and is widely applied to petrochemical industry and other various sealing industries.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic longitudinal sectional view of the present invention;

figure 2 is a top view of the present invention,

wherein, the corresponding relationship between the reference numbers and the components in fig. 1 to 2 is:

the ring body 1, the external thread section 2, the anticorrosion ring 3, the internal thread section 4, the through hole 5 and the key groove 6.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The composite seal ring according to an embodiment of the present invention will be specifically described below with reference to fig. 1 and 2.

As shown in fig. 1 and 2, the utility model provides an anticorrosive type carbide sealing ring gold sealing ring, including ring body 1, ring body 1 center is equipped with through-hole 5, and 1 outside surface of ring body is equipped with external screw thread section 2, and ring body 1 passes through 2 threaded connection anticorrosive rings 3 of screw thread section, and 2 inboards of anticorrosive ring are equipped with corresponding internal thread section 4, and anticorrosive ring is convex annular structure.

The ring body 1 is made of hard alloy. The hard alloy sealing ring adopts tungsten carbide powder as a raw material, and a proper amount of cobalt powder or nickel powder is added as a binder, so that the hard alloy sealing ring has the characteristics of high hardness, high strength, wear resistance, good smoothness, no need of frequent replacement, good hardness, high hardness, good wear resistance, high elastic modulus, high compressive strength, good chemical stability, lower impact toughness, low expansion coefficient and the like. Pressed into a ring by a certain mould and sintered in a vacuum furnace or a hydrogen reduction furnace.

The surface of the external thread section 2 of the ring body 1 is coated with epoxy resin glue and is bonded with the connected anticorrosion ring 3. The epoxy resin adhesive has excellent sealing property, chemical corrosion resistance, heat resistance and bonding property.

The inner wall of the through hole 5 is provided with a key groove 6, and the opening of the key groove 6 faces the axial through hole 5. Four key grooves 6 are provided, and the key grooves 6 are symmetrically arranged with respect to the axis of the through hole 5. The keyway can effectively unload the pressure that the sealing ring received, reduces because of the wearing and tearing that the pressure increase caused the sealing ring, prolongs its life.

The material of the anti-corrosion ring 3 is polytetrafluoroethylene, and the thickness of the thickest part of the arc top of the anti-corrosion ring 3 is 5 mm. The polymer compound polymerized by the polytetrafluoroethylene has excellent chemical stability, wear resistance, corrosion resistance, sealing property, high lubrication non-sticking property, electric insulating property and good ageing resistance, and greatly enhances the wear resistance function.

The working process is as follows: after the ring body 1 is installed on a relevant device, the anti-corrosion ring 3 is screwed on the outer side of the ring body 1 through threads and is bonded and fixed through epoxy resin glue, so that corrosion and pollution of external corrosive components to the ring body 1 are isolated. When anticorrosive ring 3 need be changed, carry out high temperature heating to the device, because the 1 material of ring body is carbide, anticorrosive ring 3 material is polytetrafluoroethylene, and the two all does not receive high temperature influence, consequently, high temperature makes the epoxy glue melt, and the anticorrosive ring 3 of new is changed to the old anticorrosive ring 3 of unscrewing again. The utility model discloses having installed the anticorrosive ring that uses polytetrafluoroethylene as the material in the ring body outside connection, anticorrosive ring adopts polytetrafluoroethylene to be the material, because polytetrafluoroethylene has all strong acid, alkali, strong oxidizer of nai, does not take place the performance of effect yet with various organic solvent, consequently can obstruct the corruption of corrosivity composition to the sealing ring in the external pollutant effectively to can change anticorrosive ring through the screw thread, the change mode is swift. The ring body is made of hard alloy materials, and is used as a mechanical sealing element product which is most widely applied, and the hard alloy sealing ring has high hardness and good corrosion resistance and is widely applied to petrochemical industry and other various sealing industries.

In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an anticorrosive type carbide sealing ring, includes ring body (1), its characterized in that, ring body (1) center is equipped with through-hole (5), and ring body (1) outside surface is equipped with external screw thread section (2), and ring body (1) passes through screw thread section (2) threaded connection anticorrosive ring (3), and anticorrosive ring (3) inboard is equipped with corresponding internal thread section (4), and anticorrosive ring (3) are convex annular structure.

2. The corrosion-resistant cemented carbide seal ring according to claim 1, characterized in that the ring body (1) is made of cemented carbide.

3. The corrosion-resistant cemented carbide seal ring according to claim 1, characterized in that the surface of the threaded section (2) of the ring body (1) is coated with epoxy glue and bonded with the connected corrosion-resistant ring (3).

4. The seal ring of claim 1, wherein the through hole (5) is provided with a key groove (6) on the inner peripheral wall, and the opening of the key groove (6) faces the axial through hole (5).

5. The seal ring of claim 4, wherein the number of the keyways (6) is four, and the keyways (6) are arranged symmetrically with respect to the axis of the through hole (5).

6. The corrosion-resistant cemented carbide seal ring according to claim 1, wherein the corrosion-resistant ring (3) is made of polytetrafluoroethylene.

7. The corrosion-resistant cemented carbide seal ring according to claim 6, characterized in that the thickest part of the arc top of the corrosion-resistant ring (3) is 10mm thick.