Ultrahigh-pressure sealing ring

Abstract

The utility model provides an ultrahigh pressure sealing ring which comprises a rubber ring and a steel ring sleeved on the outer side of the rubber ring, a trapezoid table is arranged in the middle of the outer side of the rubber ring, a trapezoid clamping groove used for containing the trapezoid table is arranged in the middle of the inner side of the steel ring, and wedge-shaped tables are respectively arranged on the edges of the outer side of the rubber ring. Wedge-shaped clamping grooves used for containing the wedge-shaped tables are formed in the edges of the inner sides of the steel rings correspondingly; the bottom width of the wedge-shaped clamping groove is a, the opening width of the wedge-shaped clamping groove is b, and a is larger than b; the bottom width of the trapezoid clamping groove is c, the opening width of the trapezoid clamping groove is d, and c is smaller than d. According to the ultrahigh-pressure sealing ring provided by the utility model, the rubber ring is respectively provided with the trapezoidal table and the wedge-shaped table, and the steel ring is respectively and correspondingly provided with the trapezoidal clamping groove and the wedge-shaped clamping groove, so that when the rubber ring is seriously abraded, the sealing ring can be independently replaced and mounted, the replacement of the sealing ring is convenient and rapid, and the use of the sealing ring is safe and reliable.

Description

Technical Field

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

[0002] A sealing ring is a sealing element that is commonly used to seal between shafts and holes. It mainly prevents liquid or gas leakage. Most sealing rings produced by existing technology are sealed by an elastomer body, and the sealing effect is achieved through the deformation of the elastic body. With the widespread application of sealing rings in different application fields, sealing rings are also diverse. For example, when using sealing rings under ultra-high pressure conditions, higher requirements are placed on the sealing rings, resulting in a combined sealing ring with a metal skeleton.

[0003] However, after using the existing combined sealing ring for a period of time, the sealing effect deteriorates due to the movement of the shaft, and the entire sealing ring needs to be removed and replaced with a new one. The replacement and installation of the sealing ring is inconvenient. This solution solves this technical problem. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides an ultra-high pressure sealing ring, in which a trapezoidal platform and a wedge-shaped platform are respectively arranged on the rubber ring, and a trapezoidal groove and a wedge-shaped groove are respectively arranged on the steel ring. When the rubber ring is severely worn, the sealing ring can be replaced and installed separately. The replacement of the sealing ring is convenient and quick, and the use of the sealing ring is safe and reliable.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an ultra-high pressure sealing ring, comprising a rubber ring and a steel ring sleeved on the outside of the rubber ring, a trapezoidal platform is provided in the middle of the outer side of the rubber ring, a trapezoidal groove for accommodating the trapezoidal platform is provided in the middle of the inner side of the steel ring, wedge-shaped platforms are respectively provided on the outer edges of the rubber ring, and wedge-shaped grooves for accommodating the wedge-shaped platforms are respectively provided on the inner edges of the steel ring.

[0006] The bottom width of the wedge-shaped slot is a, and the opening width of the wedge-shaped slot is b, wherein a>b; the bottom width of the trapezoidal slot is c, and the opening width of the trapezoidal slot is d, wherein c<d.

[0007] The depth of the wedge-shaped slot is greater than the height of the wedge-shaped platform, and the depth of the trapezoidal slot is greater than the height of the trapezoidal platform.

[0008] Two sealing parts in contact with the shaft are provided on the inner side of the rubber ring. Support parts are symmetrically provided on both sides of the trapezoidal platform on the steel ring. The support parts are respectively supported at positions on the inner side of the rubber ring corresponding to the sealing parts.

[0009] The distance between the edges of the two support parts is e, and the thickness of the middle part of the steel ring is f, wherein f<e.

[0010] The end of the rubber ring is also provided with a limiting platform which is in close contact with the steel ring.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] (1) The rubber ring is limited by the trapezoidal platform to avoid excessive deformation of the support part. The wedge-shaped platform is set in the wedge-shaped groove to avoid separation of the rubber ring and the steel ring. The trapezoidal platform and the wedge-shaped platform are respectively combined with the steel ring to avoid separation of the rubber ring from the steel ring due to deformation. The combination of the rubber ring and the steel ring is more firm and reliable, and there is no need to disassemble the steel ring when replacing it. The maintenance and replacement of the sealing ring is convenient and quick, thereby improving the applicability of the sealing ring.

[0013] (2) The steel ring is provided with two supporting parts, which support the sealing part of the rubber ring, thereby avoiding excessive deformation of the rubber ring and improving the sealing effect and service life of the rubber ring;

[0014] (3) The depth of the wedge-shaped slot is greater than the height of the wedge-shaped platform, and the depth of the trapezoidal slot is greater than the height of the trapezoidal platform. After installation, the trapezoidal platform and the wedge-shaped platform do not contact the bottom of the trapezoidal slot and the wedge-shaped slot. When the rubber ring deforms, the internal gap accommodates the deformation of the rubber ring, thereby making the combination of the rubber ring and the steel ring tighter and stronger;

[0015] (4) The distance between the edges of the two support parts is e, and the thickness of the middle part of the steel ring is f, where f<e. This ensures that even if the rubber ring is deformed by the lateral pressure of the oil pressure, the pressure is concentrated on the middle part of the rubber ring, thus preventing the rubber ring from separating from the steel ring, and making the combination of the rubber ring and the steel ring more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic cross-sectional structural diagram of the present utility model;

[0017] Figure 2 It is a cross-sectional view of the steel ring of the utility model;

[0018] Figure 3 It is a cross-sectional view of the rubber ring of the utility model;

[0019] Figure 4 It is a schematic cross-sectional structural diagram of the combination of the rubber ring and the steel ring of the utility model.

[0020] Among them, in the figure: 1, rubber ring; 11, wedge-shaped platform; 12, trapezoidal platform; 13, sealing part; 14, limit platform; 2, steel ring; 21, wedge-shaped slot; 22, trapezoidal slot; 23, support part; 3, shaft. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0022] See also Figure 1 - Figure 4 A super-high-pressure sealing ring includes a rubber ring 1 and a steel ring 2 sleeved on the outside of the rubber ring 1. A trapezoidal platform 12 is provided in the middle of the outer side of the rubber ring 1, and a trapezoidal groove 22 for accommodating the trapezoidal platform 12 is provided in the middle of the inner side of the steel ring 2. Wedge-shaped platforms 11 are provided on the outer edges of the rubber ring 1, and wedge-shaped grooves 21 for accommodating the wedge-shaped platforms 11 are provided on the inner edges of the steel ring 2.

[0023] The bottom width of the wedge-shaped slot 21 is a, and the opening width of the wedge-shaped slot 21 is b, wherein a>b; the bottom width of the trapezoidal slot 22 is c, and the opening width of the trapezoidal slot 22 is d, wherein c<d.

[0024] The depth of the wedge-shaped slot 21 is greater than the height of the wedge-shaped platform 11 , and the depth of the trapezoidal slot 22 is greater than the height of the trapezoidal platform 12 .

[0025] Two sealing parts 13 in contact with the shaft 3 are provided on the inner side of the rubber ring 1. Support parts 23 are symmetrically provided on both sides of the trapezoidal platform 12 on the steel ring 2. The support parts 23 are respectively supported on the inner side of the rubber ring 1 at positions corresponding to the sealing parts 13.

[0026] The distance between the edges of the two support parts 23 is e, and the thickness of the middle part of the steel ring 2 is f, wherein f<e.

[0027] The end of the rubber ring 1 is also provided with a limiting platform 14 that is in close contact with the steel ring 2.

[0028] The specific working process of this utility model:

[0029] First, after the steel ring 2 is firmly connected to the sleeve, the rubber ring 1 is squeezed from the inside of the steel ring 2 so that the trapezoidal platform 12 enters the trapezoidal groove and the wedge-shaped platform 11 enters the wedge-shaped groove respectively. At this time, the limit platform 14 abuts against the steel ring 2, and because the depth of the wedge-shaped groove 21 is greater than the height of the wedge-shaped platform 11, and the depth of the trapezoidal groove 22 is greater than the height of the trapezoidal platform 12, after installation, the trapezoidal platform 12 and the wedge-shaped platform 11 do not contact the bottom of the trapezoidal groove and the wedge groove, and the deformation of the rubber ring 1 is accommodated by the internal gap, so that the combination of the rubber ring 1 and the steel ring 2 is tighter and stronger. For the specific cross-sectional structure of the combination of the rubber ring 1 and the steel ring 2, see Figure 4 As shown, at this time, the two supporting parts 23 play a role in supporting the sealing part 13 of the rubber ring 1 to prevent excessive deformation of the rubber ring 1;

[0030] When in use, the shaft 3 performs reciprocating motion. At this time, the sealing portion 13 of the rubber ring 1 fits against the outer side of the shaft 3 to play a sealing role. When the sealing ring is used for a long time or the lubrication measures are not timely, the shaft 3 will generate lateral friction on the sealing ring, thereby causing the two supporting portions 23 to produce lateral deformation. The rubber ring 1 is limited by the trapezoidal platform 12 to avoid excessive deformation of the supporting portion 23. The wedge-shaped platform 11 is set in the wedge-shaped groove to avoid separation of the rubber ring 1 and the steel ring 2. The trapezoidal platform 12 and the wedge-shaped platform 11 are respectively combined with the steel ring 2 to avoid separation of the rubber ring 1 from the steel ring 2 due to deformation, and the rubber ring 1 and the steel ring 2 are more firmly combined.

[0031] The steel ring 2 is provided with two supporting parts 23, which support the sealing part 13 of the rubber ring 1, thereby preventing excessive deformation of the rubber ring 1 and improving the sealing effect and service life of the rubber ring 1.

[0032] The depth of the wedge-shaped slot 21 is greater than the height of the wedge-shaped platform 11, and the depth of the trapezoidal slot 22 is greater than the height of the trapezoidal platform 12. After installation, the trapezoidal platform 12 and the wedge-shaped platform 11 do not contact the bottom of the trapezoidal slot and the wedge-shaped slot. When the rubber ring 1 deforms, the internal gap accommodates the deformation of the rubber ring 1, thereby making the combination of the rubber ring 1 and the steel ring 2 tighter and more secure.

[0033] The distance between the edges of the two support portions 23 is e, and the thickness of the middle portion of the steel ring 2 is f, where f<e. This ensures that even when the rubber ring 1 is deformed by the lateral pressure of the oil pressure, the pressure is concentrated on the middle portion of the rubber ring 1, thus preventing the rubber ring 1 from separating from the steel ring 2. The combination of the rubber ring 1 and the steel ring 2 is more stable and reliable.

[0034] When the rubber ring 1 ages and the sealing effect is poor, the shaft 3 is taken out, and then the rubber ring 1 is removed from the steel ring 2 and replaced without removing the steel ring 2. The maintenance and replacement of the sealing ring is convenient and quick, which improves the applicability of the sealing ring.

[0035] The technical features not described in the present invention can be realized by or by adopting the existing technology, and will not be described in detail here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. An ultra-high pressure sealing ring, comprising a rubber ring (1) and a steel ring (2) sleeved on the outside of the rubber ring (1), characterized in that: A trapezoidal platform (12) is provided at the middle of the outer side of the rubber ring (1), a trapezoidal slot (22) for accommodating the trapezoidal platform (12) is provided at the middle of the inner side of the steel ring (2), a wedge-shaped platform (11) is provided at the outer edge of the rubber ring (1), and a wedge-shaped slot (21) for accommodating the wedge-shaped platform (11) is provided at the inner edge of the steel ring (2).

2. The ultra-high pressure sealing ring according to claim 1, characterized in that: The bottom width of the wedge-shaped slot (21) is a, and the opening width of the wedge-shaped slot (21) is b, wherein a>b; the bottom width of the trapezoidal slot (22) is c, and the opening width of the trapezoidal slot (22) is d, wherein c<d.

3. The ultra-high pressure sealing ring according to claim 2, characterized in that: The depth of the wedge-shaped slot (21) is greater than the height of the wedge-shaped platform (11), and the depth of the trapezoidal slot (22) is greater than the height of the trapezoidal platform (12).

4. The ultra-high pressure sealing ring according to claim 3, characterized in that: The inner side of the rubber ring (1) is provided with two sealing portions (13) in contact with the shaft (3); the steel ring (2) is symmetrically provided with supporting portions (23) on both sides of the trapezoidal platform (12); the supporting portions (23) are respectively supported at positions on the inner side of the rubber ring (1) corresponding to the sealing portions (13).

5. The ultra-high pressure sealing ring according to claim 4, characterized in that: The distance between the edges of the two support parts (23) is e, and the thickness of the middle part of the steel ring (2) is f, wherein f<e.

6. The ultra-high pressure sealing ring according to claim 5, characterized in that: The end of the rubber ring (1) is also provided with a limiting platform (14) which is in close contact with the steel ring (2).

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