Mould pressing sintering graphite sealing ring

Abstract

The utility model relates to the technical field of graphite sealing rings, and provides a mould pressing sintering graphite sealing ring which comprises a sealing ring assembly, the sealing ring assembly comprises a sealing ring body, step bases and grooves, the step bases are fixed to the two sides of the bottom end of the sealing ring body, and the grooves are evenly formed in the top of the sealing ring body. Protective structures are arranged on the outer wall of the sealing ring body and the outer wall of the stepped base, and a sealing structure is arranged on the top of the sealing ring body. The sealing structure is arranged, the sealing ring is clamped in the clamping groove, under the action of the limiting groove, the phenomenon that the sealing ring body falls off or shifts is prevented, the cavity is formed in the sealing ring, under the action of the cavity, the sealing performance is improved, and the function that the device facilitates improvement of the sealing effect is achieved; and therefore, the applicability of the molded and sintered graphite sealing ring in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite sealing rings, in particular to a molded sintered graphite sealing ring. Background Art

[0002] Graphite sealing rings are tools made of low-sulfur expanded graphite through molding. They have precise dimensions, fixed density, and no external fillers or adhesives. Therefore, a molded sintered graphite sealing ring is used;

[0003] To this end, the patent with publication number CN203363139U discloses a graphite sealing ring, including a sealing ring body made of flexible graphite, wherein a steel wire is arranged inside the sealing ring body; a 45° inner chamfer is arranged at the inner end face of the sealing ring body, and a stainless steel edge guard is arranged on the outer circumferential surface of the sealing ring body opposite to the inner chamfer; the edge guard has a thickness of 0.1 to 0.2 mm. The utility model provides a 45° inner chamfer at the inner end face of the sealing ring body and a stainless steel edge guard of a certain thickness on the outer circumferential surface of the sealing ring body opposite to the inner chamfer, thereby protecting the weak corner position and avoiding the sealing failure caused by damage at the corner in the past. The steel wire is arranged inside the sealing ring body, which greatly improves the overall pressure resistance of the sealing ring, thereby improving the safety of the equipment and the reliability of the seal, and extending the service life of the sealing ring.

[0004] The above-mentioned graphite sealing ring is provided with a steel wire in the sealing ring body when in use, which greatly improves the overall pressure resistance of the sealing ring. However, it is inconvenient to improve its sealing performance during use, which makes its applicability low during use. Utility Model Content

[0005] The utility model aims to provide a molded sintered graphite sealing ring to solve the defect that the existing molded sintered graphite sealing ring is inconvenient to increase the sealing effect.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a molded sintered graphite sealing ring, including a sealing ring assembly;

[0007] The sealing ring assembly comprises a sealing ring body, a stepped seat and a groove, the two sides of the bottom end of the sealing ring body are fixed with stepped seats, and the top of the sealing ring body is evenly provided with grooves;

[0008] The outer walls of the sealing ring body and the stepped seat are both provided with protective structures;

[0009] A sealing structure is arranged on the top of the sealing ring body. The sealing structure comprises a clamping groove, a sealing ring and a cavity. The clamping groove is arranged inside the sealing ring body.

[0010] When the device is used, by providing a sealing structure, the device can improve the sealing effect, thereby improving the applicability of the molded sintered graphite sealing ring when in use; by providing a protective structure, the device can achieve the functions of heat insulation, corrosion resistance and wear resistance, thereby extending the service life of the molded sintered graphite sealing ring when in use.

[0011] Preferably, a limiting groove is provided on one side of the interior of the sealing ring body, and the grooves are distributed at equal intervals on the top of the sealing ring body.

[0012] Preferably, the stepped seats are symmetrically distributed on both sides of the bottom end of the sealing ring body, and the bottom end of the stepped seats and the bottom end of the sealing ring body are located in the same horizontal plane.

[0013] Preferably, a sealing ring is provided inside the clamping groove, and a cavity is provided inside the sealing ring. The sealing ring is clamped inside the clamping groove, and under the action of the limiting groove, the sealing ring body is prevented from falling off or shifting.

[0014] Preferably, the sealing ring and the sealing ring body form a snap-fit ​​structure through a snap-fit ​​groove, and the outer diameter of the sealing ring is greater than the thickness of the snap-fit ​​groove. A cavity is provided inside the sealing ring, and the sealing performance is increased under the action of the cavity.

[0015] Preferably, the protective structure comprises a connection layer, a heat insulation layer and a protective layer, wherein the connection layer is respectively arranged on the outer side walls of the sealing ring body and the stepped seat, the outer side wall of the connection layer is provided with a heat insulation layer, and the outer side wall of the heat insulation layer is provided with a protective layer. The heat insulation layer is actually an aluminum oxide coating, which has excellent insulation, heat insulation and corrosion resistance.

[0016] Preferably, the heat insulation layer is actually an aluminum oxide coating, and the protective layer is actually a ceramic wear-resistant layer. The protective layer is actually a ceramic wear-resistant layer, which has extremely high wear resistance and can effectively prevent wear, corrosion and oxidation of the component surface.

[0017] The molded sintered graphite sealing ring provided by the utility model has the following advantages:

[0018] By providing a sealing structure, the sealing ring is clamped inside the clamping groove, and under the action of the limiting groove, the sealing ring body is prevented from falling off or shifting. A cavity is provided inside the sealing ring, and under the action of the cavity, the sealing performance is increased, and the function of the device to improve the sealing effect is realized, thereby improving the applicability of the molded sintered graphite sealing ring when in use;

[0019] By providing a protective structure, the heat insulation layer is actually an aluminum oxide coating, which has excellent insulation, heat insulation and corrosion resistance. The protective layer is actually a ceramic wear-resistant layer, which has extremely high wear resistance and can effectively prevent surface wear, corrosion and oxidation of components, thereby realizing the functions of heat insulation, corrosion resistance and wear resistance of the device, thereby extending the service life of the molded sintered graphite sealing ring during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the cross-section three-dimensional structure of the utility model;

[0022] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0023] Figure 4 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0024] Figure 5 For the utility model Figure 4 Enlarged structural diagram at B in the middle.

[0025] Explanation of the reference numerals in the figure: 1. Sealing ring assembly; 101. Sealing ring body; 102. Step seat; 103. Groove; 2. Sealing structure; 201. Snap-in groove; 202. Sealing ring; 203. Cavity; 3. Protective structure; 301. Connecting layer; 302. Heat insulation layer; 303. Protective layer. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-Figure 5The molded sintered graphite sealing ring provided by the utility model comprises a sealing ring assembly 1, the sealing ring assembly 1 comprises a sealing ring body 101, a stepped seat 102 and a groove 103, both sides of the bottom end of the sealing ring body 101 are fixed with stepped seats 102, the top of the sealing ring body 101 is evenly provided with grooves 103, and the outer walls of the sealing ring body 101 and the stepped seat 102 are both provided with a protective structure 3, the protective structure 3 comprises a connecting layer 301, a heat insulating layer 302 and a protective layer 303, the connecting layer 301 is respectively provided on the sealing ring body 101 and the outer wall of the stepped seat 102, the outer wall of the connecting layer 301 is provided with a heat insulating layer 302, the outer wall of the heat insulating layer 302 is provided with a protective layer 303, the heat insulating layer 302 is actually an aluminum oxide coating, the protective layer 303 is actually a ceramic wear-resistant layer, a limiting groove is provided on one side of the inside of the sealing ring body 101, the grooves 103 are distributed at equal intervals on the top of the sealing ring body 101, the stepped seat 102 is symmetrically distributed on both sides of the bottom end of the sealing ring body 101, and the bottom end of the stepped seat 102 and the bottom end of the sealing ring body 101 are located in the same horizontal plane.

[0028] Reference Figure 4 and Figure 5 As shown, the heat insulating layer 302 is actually an aluminum oxide coating, which has excellent insulation, heat insulation and corrosion resistance. The protective layer 303 is actually a ceramic wear-resistant layer, which has extremely high wear resistance and can effectively prevent surface wear, corrosion and oxidation of components.

[0029] A sealing structure 2 is provided at the top of the sealing ring body 101, and the sealing structure 2 includes a snap-in groove 201, a sealing ring 202 and a cavity 203. The snap-in groove 201 is opened inside the sealing ring body 101, and a sealing ring 202 is provided inside the snap-in groove 201. A cavity 203 is provided inside the sealing ring 202. The sealing ring 202 and the sealing ring body 101 form a snap-in structure through the snap-in groove 201, and the outer diameter of the sealing ring 202 is greater than the thickness of the snap-in groove 201.

[0030] Reference Figure 2 and Figure 3 As shown, the sealing ring 202 is clamped inside the clamping groove 201. Under the action of the limiting groove, the sealing ring body 101 is prevented from falling off or shifting. A cavity 203 is set inside the sealing ring 202. Under the action of the cavity 203, the sealing performance is improved.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A molded sintered graphite sealing ring, comprising a sealing ring assembly (1); Features: The sealing ring assembly (1) comprises a sealing ring body (101), a stepped seat (102) and a groove (103); the stepped seats (102) are fixed on both sides of the bottom end of the sealing ring body (101), and the grooves (103) are evenly formed on the top of the sealing ring body (101); The outer walls of the sealing ring body (101) and the stepped seat (102) are both provided with a protective structure (3); A sealing structure (2) is provided on the top of the sealing ring body (101), the sealing structure (2) comprising a clamping groove (201), a sealing ring (202) and a cavity (203), and the clamping groove (201) is opened inside the sealing ring body (101).

2. The molded sintered graphite sealing ring according to claim 1, characterized in that: A limiting groove is provided on one side inside the sealing ring body (101), and the grooves (103) are distributed at equal intervals on the top of the sealing ring body (101).

3. The molded sintered graphite sealing ring according to claim 1, characterized in that: The stepped seat (102) is symmetrically distributed on both sides of the bottom end of the sealing ring body (101), and the bottom end of the stepped seat (102) and the bottom end of the sealing ring body (101) are located on the same horizontal plane.

4. The molded sintered graphite sealing ring according to claim 1, characterized in that: A sealing ring (202) is provided inside the clamping groove (201), and a cavity (203) is provided inside the sealing ring (202).

5. The molded sintered graphite sealing ring according to claim 4, characterized in that: The sealing ring (202) and the sealing ring body (101) form a clamping structure through the clamping groove (201), and the outer diameter of the sealing ring (202) is greater than the thickness of the clamping groove (201).

6. The molded sintered graphite sealing ring according to claim 1, characterized in that: The protective structure (3) comprises a connecting layer (301), a heat insulating layer (302) and a protective layer (303); the connecting layer (301) is respectively arranged on the outer side walls of the sealing ring body (101) and the stepped seat (102); the outer side wall of the connecting layer (301) is provided with a heat insulating layer (302); and the outer side wall of the heat insulating layer (302) is provided with a protective layer (303).

7. The molded sintered graphite sealing ring according to claim 6, characterized in that: The heat insulation layer (302) is actually an aluminum oxide coating, and the protective layer (303) is actually a ceramic wear-resistant layer.

Images