High-pressure combined sealing ring

Abstract

The utility model relates to the technical field of sealing rings, and discloses a high-pressure combined sealing ring which comprises a wear-resisting ring, a sealing ring and two check rings, the inner wall of the wear-resisting ring is fixedly connected with an elastic supporting unit, the elastic supporting unit comprises a connecting sleeve fixedly connected with the inner wall of the wear-resisting ring, and one end of the connecting sleeve is fixedly connected with an elastic ring sleeve. The outer wall of the sealing ring is provided with a sleeving opening, the sleeving opening is movably arranged on the outer walls of the connecting sleeve and the elastic ring sleeve in a sleeving mode, the elastic ring sleeve is supported on the inner wall of the sleeving opening, the outer wall of the sealing ring is attached to the inner wall of the wear-resisting ring, and the two check rings shield the two sides of the sealing ring respectively; the elastic supporting unit is fixed to the inner wall of the wear-resisting ring, the sleeving opening in the sealing ring is arranged on the elastic supporting unit in a sleeving mode, the elastic supporting unit exerts elastic force on the sealing ring through the sleeving opening, and therefore under the high-pressure environment, the elastic recovery capacity of the sealing ring is reduced, and the elastic supporting unit can still exert resilience force on the sealing ring; the sealing effect is guaranteed, and the high-pressure resistance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, in particular to a high-pressure combined sealing ring. Background Art

[0002] A sealing ring is an accessory used for sealing. It mainly includes V-shaped sealing rings, U-shaped rings, O-shaped sealing rings, rectangular sealing rings, Y-shaped sealing rings, YX-shaped sealing rings for holes, YX-shaped retaining rings for holes, YX-shaped retaining rings for shafts, and YX-shaped sealing rings for shafts. Some sealing rings are combined to improve their performance.

[0003] Prior art, such as the patent with publication number CN219606013U, discloses a high-pressure combined sealing ring, the key points of its technical solution include a support ring, multiple grooves are opened on the inner wall and the outer wall of the support ring, O-rings are clamped in the grooves, the effect is that the O-ring and the sealing surface are attached to achieve sealing, the support ring and the O-ring are both elastic, thereby improving the overall elasticity of the sealing ring, and multiple O-rings can effectively improve the sealing and pressure resistance.

[0004] The existing technology still has shortcomings:

[0005] In the above-mentioned prior art, sealing is performed by an O-ring, but under high pressure, it is easily affected by high temperature, resulting in reduced elastic recovery ability of the sealing ring, making it difficult for the sealing ring to fit tightly with the pipe wall, causing leakage in the pipeline and affecting the overall sealing of the pipeline. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a high-pressure combined sealing ring, which can still play a stable sealing role in a high-temperature environment.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-pressure combined sealing ring, comprising a wear-resistant ring, a sealing ring and two retaining rings, the inner wall of the wear-resistant ring is fixedly connected with an elastic supporting unit, the elastic supporting unit comprises a connecting sleeve fixedly connected to the inner wall of the wear-resistant ring, one end of the connecting sleeve is fixedly connected with an elastic ring sleeve, the outer wall of the sealing ring is provided with a sleeve opening, the sleeve opening is movably sleeved on the outer walls of the connecting sleeve and the elastic ring sleeve, the elastic ring sleeve is supported on the inner wall of the sleeve opening, the outer wall of the sealing ring is fitted with the inner wall of the wear-resistant ring, the two retaining rings are respectively blocked on both sides of the sealing ring, and the retaining rings are also blocked on both sides of the wear-resistant ring.

[0008] Preferably, the elastic ring sleeve and the connecting sleeve are both C-shaped structures, and the opening of the elastic ring sleeve is fixed to the opening of the connecting sleeve.

[0009] Preferably, a separation opening is provided on the outer wall of the middle portion of the elastic ring sleeve, and the separation opening cuts the elastic ring sleeve into two parts.

[0010] Preferably, the outer walls at the upper and lower ends of the elastic ring sleeve are provided with a plurality of clearance openings, and the plurality of clearance openings are evenly distributed on the outer walls at the two ends of the elastic ring sleeve.

[0011] Preferably, a cutout is provided on the bottom surface of the clearance opening close to the inner wall of the elastic ring sleeve, and the cutout is communicated with the separation opening.

[0012] Preferably, both sides of the sealing ring are fixedly connected to limiting convex rings, and the two retaining rings are respectively sleeved on the outer walls of the two limiting convex rings.

[0013] Preferably, limiting grooves are provided on both sides of the sealing ring, and a clamping ring is fixedly connected to the side wall of the retaining ring, and the clamping ring is inserted into the limiting groove.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model fixes an elastic support unit on the inner wall of the wear-resistant ring, and the sleeve opening on the sealing ring is sleeved on the elastic support unit. The elastic support unit applies elastic force to the sealing ring through the sleeve opening. Therefore, under high-pressure environment, the elastic recovery ability of the sealing ring is reduced, and the elastic support unit can still apply rebound force to the sealing ring to ensure the sealing effect and increase the high-pressure resistance.

[0016] 2. In the utility model, the retaining ring is sleeved on the limiting convex ring on the sealing ring, and the clamping ring on the side wall of the retaining ring is inserted into the limiting groove on the sealing ring, thereby ensuring the restriction of the sealing ring, avoiding the phenomenon of the sealing ring being squeezed and moved out, and improving the stability of use.

[0017] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is an exploded schematic diagram of the overall structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the wear-resistant ring and the elastic support unit of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the sealing ring of the utility model;

[0022] Figure 5 It is a cross-sectional schematic diagram of the overall structure of the utility model.

[0023] In the figure: 1, wear-resistant ring; 2, sealing ring; 3, retaining ring; 4, sleeve opening; 5, elastic support unit; 51, connecting sleeve; 52, elastic ring sleeve; 53, separation opening; 54, clearance opening; 55, cut opening; 6, limiting convex ring; 7, limiting groove; 8, snap ring. DETAILED DESCRIPTION

[0024] 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 technical field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5 The high-pressure combined sealing ring of this embodiment includes a wear-resistant ring 1, a sealing ring 2 and two retaining rings 3. The inner wall of the wear-resistant ring 1 is fixedly connected with an elastic supporting unit 5. The elastic supporting unit 5 includes a connecting sleeve 51 fixedly connected to the inner wall of the wear-resistant ring 1. One end of the connecting sleeve 51 is fixedly connected with an elastic ring sleeve 52. The outer wall of the sealing ring 2 is provided with a sleeve opening 4. The sleeve opening 4 is movably sleeved on the outer walls of the connecting sleeve 51 and the elastic ring sleeve 52. The elastic ring sleeve 52 is supported on the inner wall of the sleeve opening 4. The outer wall of the sealing ring 2 is fitted with the inner wall of the wear-resistant ring 1. The two retaining rings 3 are respectively blocked on both sides of the sealing ring 2, and the retaining ring 3 is also blocked on both sides of the wear-resistant ring 1.

[0026] like Figure 1-5 As shown, the combined sealing ring structure in the utility model is similar to the existing combined sealing ring structure, such as the prior art CN219606013U. The main improvement of the utility model is that the sealing ring can still play a stable sealing role in a high temperature environment; when the utility model is installed, the sleeve opening 4 on the sealing ring 2 is sleeved on the outer walls of the elastic ring sleeve 52 and the connecting sleeve 51, so that the sealing ring 2 is restricted to the inner wall of the wear-resistant ring 1 through the connecting sleeve 51 and the elastic ring sleeve 52. At this time, the two retaining rings 3 are covered on both sides of the wear-resistant ring 1, and the retaining rings 3 block both sides of the sealing ring 2. At this time, the inner ring of the sealing ring 2 contacts the pipe wall to be sealed. When the pressure is too high, the elastic recovery ability of the sealing ring 2 is reduced. At this time, the elastic force of the elastic ring sleeve 52 is used to cooperate with the sleeve opening 4 to apply elastic force to the sealing ring 2, thereby maintaining the sealing effect of the sealing ring 2 and increasing the high pressure resistance.

[0027] like Figure 2 , 5As shown, the elastic ring sleeve 52 and the connecting sleeve 51 are both C-shaped structures, and the opening of the elastic ring sleeve 52 is fixed to the opening of the connecting sleeve 51; the part of the sleeve opening 4 that is sleeved outside the elastic ring sleeve 52 is open and elliptical, and the elastic ring sleeve 52 fits with the inner wall there, so that the shape of the elastic ring sleeve 52 is easy to deform and apply elasticity.

[0028] like Figure 3 As shown, a separation opening 53 is opened on the outer wall of the middle part of the elastic ring sleeve 52, and the separation opening 53 cuts the elastic ring sleeve 52 into two parts; the separation opening 53 separates the elastic ring sleeve 52, so that the two parts of the elastic ring sleeve 52 exert elastic supporting force on the sealing ring 2, disperse the force, and increase the elastic force exerted by the elastic ring sleeve 52 on the sealing ring 2.

[0029] like Figure 3 As shown, the outer walls at the upper and lower ends of the elastic ring sleeve 52 are provided with a plurality of paving openings 54, and the plurality of paving openings 54 are evenly distributed on the outer walls at both ends of the elastic ring sleeve 52; the paving openings 54 allow the elastic ring sleeve 52 to deform to a certain extent, thereby applying elastic force to multiple locations of the sealing ring 2, dispersing the force, and further increasing the elastic force applied to the sealing ring 2.

[0030] like Figure 3 As shown, a cutout 55 is provided on the bottom surface of the clearance opening 54 near the inner wall of the elastic ring sleeve 52, and the cutout 55 is connected to the separation opening 53; the cutout 55, the separation opening 53 and the clearance opening 54 divide the elastic ring sleeve 52 into multiple pieces to apply elastic force to the sealing ring 2, including the stability of the elastic force applied to the sealing ring 2, thereby ensuring the sealing performance of the sealing ring 2 to the sealing structure.

[0031] like Figure 4 , 5 As shown, both sides of the sealing ring 2 are fixedly connected with limiting convex rings 6, and the two retaining rings 3 are respectively sleeved on the outer walls of the two limiting convex rings 6; the retaining rings 3 are sleeved on the outer walls of the limiting convex rings 6, and the limiting convex rings 6 cover the retaining rings 3, so that the retaining rings 3 can stably limit the sealing ring 2 to prevent it from being detached due to extrusion.

[0032] like Figure 2 , 4 As shown in Figures 5 and 6, limiting grooves 7 are provided on both sides of the sealing ring 2, and a snap ring 8 is fixedly connected to the side wall of the retaining ring 3, and the snap ring 8 is inserted into the limiting groove 7; when the retaining ring 3 is installed, the snap ring 8 is inserted into the limiting groove 7 on the sealing ring 2, and cooperates with the sleeve opening 4 on the sealing ring 2 to be sleeved on the outer walls of the connecting sleeve 51 and the elastic ring sleeve 52, thereby stably limiting the sealing ring 2, avoiding the sealing ring 2 from being squeezed out, and improving the stability of use.

[0033] Implementation steps in this embodiment: during installation, the sleeve opening 4 on the sealing ring 2 is sleeved on the outer walls of the elastic ring sleeve 52 and the connecting sleeve 51, so that the sealing ring 2 is restricted to the inner wall of the wear-resistant ring 1 through the connecting sleeve 51 and the elastic ring sleeve 52. At this time, the two retaining rings 3 are covered on both sides of the wear-resistant ring 1, and the retaining rings 3 are sleeved on the outer wall of the limiting convex ring 6. The clamping ring 8 is inserted into the limiting groove 7 on the sealing ring 2. The retaining ring 3 blocks both sides of the sealing ring 2. At this time, the inner ring of the sealing ring 2 contacts the pipe wall to be sealed. When the pressure is too high, the elastic recovery ability of the sealing ring 2 is reduced. The cut opening 55, the separation opening 53 and the give way opening 54 divide the elastic ring sleeve 52 into multiple pieces to apply elastic force to the sealing ring 2, and cooperate with the sleeve opening 4 to apply elastic force to the sealing ring 2, thereby maintaining the sealing effect of the sealing ring 2.

[0034] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A high pressure combined sealing ring, characterized in that: The invention comprises a wear-resistant ring (1), a sealing ring (2) and two retaining rings (3); the inner wall of the wear-resistant ring (1) is fixedly connected to an elastic support unit (5); the elastic support unit (5) comprises a connecting sleeve (51) fixedly connected to the inner wall of the wear-resistant ring (1); one end of the connecting sleeve (51) is fixedly connected to an elastic ring sleeve (52); the outer wall of the sealing ring (2) is provided with a sleeve opening (4); the sleeve opening (4) is movably sleeved on the outer walls of the connecting sleeve (51) and the elastic ring sleeve (52); the elastic ring sleeve (52) is supported on the inner wall of the sleeve opening (4); the outer wall of the sealing ring (2) is fitted with the inner wall of the wear-resistant ring (1); the two retaining rings (3) respectively cover the two sides of the sealing ring (2); and the retaining ring (3) also covers the two sides of the wear-resistant ring (1); A separation opening (53) is provided on the outer wall of the middle portion of the elastic ring sleeve (52), and the separation opening (53) cuts the elastic ring sleeve (52) into two parts; The outer walls at the upper and lower ends of the elastic ring sleeve (52) are provided with a plurality of clearance openings (54), and the plurality of clearance openings (54) are evenly distributed on the outer walls at the two ends of the elastic ring sleeve (52); A cutout (55) is provided on the bottom surface of the clearance opening (54) close to the inner wall of the elastic ring sleeve (52), and the cutout (55) is communicated with the separation opening (53).

2. A high pressure combined sealing ring according to claim 1, characterized in that: The elastic ring sleeve (52) and the connecting sleeve (51) are both C-shaped structures, and the opening of the elastic ring sleeve (52) is fixed to the opening of the connecting sleeve (51).

3. A high pressure combined sealing ring according to claim 1, characterized in that: Both sides of the sealing ring (2) are fixedly connected to limiting convex rings (6), and the two retaining rings (3) are respectively sleeved on the outer walls of the two limiting convex rings (6).

4. A high pressure combined sealing ring according to claim 3, characterized in that: Limiting grooves (7) are provided on both sides of the sealing ring (2), and a clamping ring (8) is fixedly connected to the side wall of the retaining ring (3), and the clamping ring (8) is inserted into the limiting groove (7).

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