A high-pressure resistant sealing ring for motion stress

Abstract

This utility model discloses a high-pressure resistant sealing ring for motion stress, relating to the field of sealing ring technology. It includes a sealing ring body with a V-shaped groove on one side. Elastic sheets one and two are respectively laid on the inner walls of both sides of the V-shaped groove. A fixing plate is provided between the elastic sheets one and two. The fixing plate includes a connecting portion and several contact portions, which are evenly arranged circumferentially along the connecting portion and are obliquely inclined from top to bottom away from the connecting portion. A flexible sealing ring covers the surface of the fixing plate. Sliding grooves for accommodating the contact portions are formed on the elastic sheets one and two. A square groove is formed circumferentially on the side of the sealing ring body near the rotating shaft, and a star-shaped ring is placed in the square groove. A circular groove is formed on the side of the sealing ring body away from the V-shaped groove, and a spring ring is placed in the circular groove. This application has the effect of improving the sealing ability of the sealing ring.

Description

Technical Field

[0001] This utility model relates to the field of sealing ring technology, and in particular to a high-pressure resistant sealing ring for motion stress. Background Technology

[0002] Currently, sealing rings are widely used in the sealing parts of mechanical equipment such as bearings, valves, and pumps. High-pressure resistant sealing rings are required to seal the sealing parts. The sealing ring is placed inside the bushing, and the rotating shaft passes through the sealing ring to form a sealed space to prevent internal liquid leakage or external impurities from entering.

[0003] Related technology can be found in Chinese Patent No. CN222543007U, which discloses an adjustable sealing ring. This utility model provides an adjustable sealing ring including a sealing ring body and a metal gasket. The metal gasket has an annular structure with annular protrusions at both the top and bottom. The upper and lower sides of the sealing ring body have annular connecting grooves that match the annular protrusions. Adjacent sealing ring bodies are connected by metal gaskets. The sealing ring body can be used alone. If the height of the sealing ring body is insufficient, two sealing ring bodies can be combined by using metal gaskets to increase the height of the sealing ring, enabling it to provide sufficient compression to ensure the sealing effect. After adding the metal gasket, due to the high wear resistance and corrosion resistance of the metal gasket, the service life of the sealing ring can be improved. Furthermore, the metal gasket can enhance the sealing performance of the sealing ring, especially under high pressure or high temperature environments, the high hardness and precision of the metal gasket can ensure a tighter fit and reduce the possibility of leakage.

[0004] Regarding the aforementioned technologies, during operation, the solid design of the flat metal gasket and the sealing ring restricts the radial deformation space of the sealing ring assembly. In high-pressure environments, the frictional resistance between the rotating shaft and the sealing ring increases during rotation, exacerbating wear on the rotating shaft and the sealing ring, thus impairing the pressure resistance of the sealing ring and affecting its sealing effect. Utility Model Content

[0005] To improve the sealing effect of the sealing ring, this application provides a high-pressure resistant sealing ring for motion stress.

[0006] This application provides a high-pressure resistant sealing ring for motion stress, employing the following technical solution:

[0007] A high-pressure resistant sealing ring for motion stress includes a sealing ring body. A V-shaped groove is formed at one end of the upper part of the sealing ring body along the axis. The side of the sealing ring away from the V-shaped groove is flat. An elastic sheet one is laid on the side wall of the V-shaped groove near the axis, and an elastic sheet two is laid on the side wall of the V-shaped groove away from the axis. The sides of the elastic sheet one and elastic sheet two that are close to each other are fixedly connected. After the elastic sheet one and elastic sheet two are connected, their cross-section along the axis is V-shaped and made of a rigid elastic material. Several fixing plates are evenly distributed between the elastic sheet one and elastic sheet two. The gaps between the elastic sheet one, elastic sheet two, and the fixing plates form a movable chamber. Both the elastic sheet one and elastic sheet two are in contact with the fixing plates, which are made of a rigid material. All fixing plates are evenly covered with a flexible sealing ring along the circumference, keeping the movable chamber in a sealed state. Baffles extend from the sides of the elastic sheet one and elastic sheet two away from each other towards the fixing plates.

[0008] By adopting the above technical solution, the sealing ring body blocks the airflow on both sides along the axial direction. Elastic sheet one and elastic sheet two support the inner wall of the V-groove. The sealing body remains relatively stable when compressed. The movable chamber provides variable space for elastic sheet one and elastic sheet two in the radial direction. The flexible sealing ring keeps the movable chamber in a sealed state. When the end of the sealing ring body with the fixed piece is under high pressure, the fixed piece applies a circumferential thrust to elastic sheet one and elastic sheet two under pressure, causing elastic sheet one and elastic sheet two to separate from each other and causing the sealing ring body to expand radially, thereby improving the sealing effect of the sealing ring body. The baffle limits the fixed piece, reducing the probability of the fixed piece slipping out of the V-groove, which is beneficial to improving the pressure resistance and sealing effect of the sealing ring.

[0009] Optionally, a connecting plate is fixed at the connection between the first elastic sheet and the second elastic sheet, and a ring is fixed at one end of the connecting plate away from the elastic sheet. A placement groove adapted to the ring is opened in the sealing ring, and the ring is inserted into the placement groove and fits against the inner wall of the placement groove.

[0010] By adopting the above technical solution, when elastic sheet one and elastic sheet two are placed in the V-groove, elastic sheet one and elastic sheet two are connected to the ring through the connecting plate. When the ring is in contact with the inner wall of the placement groove, elastic sheet one and elastic sheet two are fixed, so that elastic sheet one and elastic sheet two are in contact with the inner wall of the V-groove, which helps to improve the installation stability of elastic sheet one and elastic sheet two.

[0011] Optionally, the first elastic sheet and the second elastic sheet are fixedly connected to the inner wall of the V-groove and are in contact with both sides of the inner wall of the V-groove.

[0012] By adopting the above technical solution, elastic sheet one and elastic sheet two are fixedly connected to the inner wall of the V-groove, reducing the probability of elastic sheet one and elastic sheet two falling out of the V-groove, which is beneficial to improving the installation stability of elastic sheet one and elastic sheet two.

[0013] Optionally, the fixing piece includes a connecting part and several contact parts. The connecting part is annular, and several contact parts are evenly distributed on both sides inside and outside the connecting part. A flexible sealing ring is fixed on the side of the connecting part away from the V-groove and blocks the gap between adjacent contact parts. The side of the contact part away from the connecting part is slidably connected to the corresponding elastic piece one or elastic piece two. The upper end surface of the connecting part is flat and is directly opposite the middle position of the V-groove.

[0014] By adopting the above technical solution, the connecting part, elastic plate one, and elastic plate two cooperate to support the contact part. The plane of the connecting part is uniformly resistant to pressure. When subjected to high external air pressure, the connecting part applies pressure to the corresponding elastic ring one and elastic ring two through the contact part, causing elastic ring one and elastic ring two to move away from each other. The contact part is set independently, thereby providing space for the deformation of the contact part. The contact part slides stably along elastic plate one and elastic plate two, which helps to improve the stability of the sliding of the contact part.

[0015] Optionally, both the first elastic sheet and the second elastic sheet have a plurality of radial grooves adapted to the contact portion on the side near the fixed sheet. The contact portion is located in the corresponding groove and contacts the inner wall of the groove.

[0016] By adopting the above technical solution, the contact part is inserted into the slide groove and slides along the length of the slide groove. The slide groove limits the displacement of the contact part along the width of the slide groove, reducing the probability of the contact part detaching from the first elastic piece and the second elastic piece, which is beneficial to improving the stability of the fixing piece.

[0017] Optionally, a square groove is provided circumferentially on the side of the sealing ring near the rotating shaft, and a star-shaped ring is placed in the square groove.

[0018] By adopting the above technical solution, the square groove supports and limits the star-shaped ring. When the sealing ring is working, the sealing ring body and the rotating shaft cooperate to make the star-shaped ring contact the rotating shaft and keep it in close contact, which helps to improve the stability and sealing effect of the sealing ring.

[0019] Optionally, a circular groove is provided circumferentially on the side of the sealing ring away from the V-groove, and a spring ring is placed in the circular groove. In its natural state, the spring ring pushes the sealing ring body closer to the rotating shaft.

[0020] By adopting the above technical solution, the circular groove supports and limits the spring ring. In its natural state, the circular groove tightens the side of the sealing ring body near the rotating shaft, making the sealing ring body in close contact and fit with the rotating shaft, which helps to improve the sealing effect of the sealing ring.

[0021] Optionally, the sealing ring has a wavy protrusion fixed circumferentially on the side opposite to the rotating shaft.

[0022] By adopting the above technical solution, during the rotation of the shaft, the sealing ring body is pushed to be squeezed against the inner wall of the bushing, and the gap between adjacent corrugated protrusions forms a deformation space, which facilitates the deformation of the corrugated protrusions after being squeezed, thus improving the sealing effect of the sealing ring.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The sealing ring body blocks the airflow on both sides along the axial direction. Elastic sheet one and elastic sheet two support the inner wall of the V-groove. The sealing body remains relatively stable when compressed. The movable chamber provides variable space for elastic sheet one and elastic sheet two in the radial direction. The flexible sealing ring keeps the movable chamber in a sealed state. When the end of the sealing ring body with the fixed piece is under high pressure, the fixed piece applies a circumferential thrust to elastic sheet one and elastic sheet two under pressure, causing elastic sheet one and elastic sheet two to separate from each other and causing the sealing ring body to expand radially, thereby improving the sealing effect of the sealing ring body. The baffle limits the fixed piece, reducing the probability of the fixed piece slipping out of the V-groove, which is beneficial to improving the pressure resistance and sealing effect of the sealing ring.

[0025] 2. When elastic sheet one and elastic sheet two are placed in the V-groove, elastic sheet one and elastic sheet two are connected to the ring through the connecting plate. When the ring is in contact with the inner wall of the groove, elastic sheet one and elastic sheet two are fixed, so that elastic sheet one and elastic sheet two are in contact with the inner wall of the V-groove, which helps to improve the installation stability of elastic sheet one and elastic sheet two.

[0026] 3. Elastic sheet one and elastic sheet two are fixedly connected to the inner wall of the V-groove, which reduces the probability of elastic sheet one and elastic sheet two falling out of the V-groove and helps to improve the installation stability of elastic sheet one and elastic sheet two. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of Example 1.

[0028] Figure 2 This is a schematic diagram designed to highlight the structure of the fixed plate.

[0029] Figure 3 This is a schematic diagram of the overall structure of Example 2.

[0030] Explanation of reference numerals in the attached drawings: 1. Sealing ring body; 11. Square groove; 12. Star-shaped ring; 13. Circular groove; 14. Spring ring; 15. Placement groove; 2. V-shaped groove; 3. Elastic sheet one; 31. Sliding groove; 32. Connecting plate; 33. Circular ring; 34. Baffle; 4. Elastic sheet two; 5. Fixing piece; 51. Connecting part; 52. Contact part; 6. Flexible sealing ring; 7. Wavy protrusion. Detailed Implementation

[0031] The present application will be further described in detail below with reference to all the accompanying drawings.

[0032] This application discloses a high-pressure resistant sealing ring for motion stress.

[0033] Example 1

[0034] Reference Figure 1 and Figure 2 A high-pressure resistant sealing ring for motion stress includes a sealing ring body 1. A V-groove 2 is provided on one side of the sealing ring body 1 along the axial direction. The side of the sealing ring body 1 opposite to the V-groove 2 is a plane. In the installed state, the inner side of the sealing ring body is connected to the rotating shaft, and the outer side of the sealing ring body is connected to the inner wall of the bushing.

[0035] Reference Figure 2 Elastic sheet 3 and elastic sheet 4 are respectively installed circumferentially on the inner walls of both sides of the V-groove 2. Elastic sheet 3 and elastic sheet 4 have openings circumferentially and are made of elastic material, such as plastic or spring steel. A connecting plate 32 is fixedly installed at the connection point of elastic sheet 3 and elastic sheet 4. A ring 33 is fixedly installed on the side of the connecting plate 32 opposite to elastic sheet 3 and elastic sheet 4. A placement groove 15 corresponding to the ring 33 is opened circumferentially inside the sealing ring body 1. The bottom of the V-groove 2 communicates with the placement groove 15 through a gap. The inner walls of both sides of the gap are naturally fitted together. The ring 33 is inserted into the placement groove 15 and fits against the inner wall of the placement groove 15. The connecting plate 32 fits against the inner wall of the gap. The ring 33 and the connecting plate 32 cooperate to support and limit elastic sheet 3 and elastic sheet 4, thereby supporting the inner walls of both sides of the V-groove 2 and improving the stability of the sealing ring installation.

[0036] Reference Figure 2 A plurality of fixing plates 5 are evenly distributed circumferentially between elastic plate 3 and elastic plate 4. The fixing plates 5 are made of elastic material, such as plastic or spring steel. Each fixing plate 5 includes a plurality of contact portions 52 and connecting portions 51. The connecting portions 51 are arranged circumferentially along the V-groove 2, and the upper end surface of the connecting portions 51 is flat. The plurality of contact portions 52 are symmetrically and independently evenly arranged circumferentially along the connecting portions 51, and the contact portions 52 are inclined from top to bottom away from the fixing portions. The contact portions 52 on the inner side of the connecting portions 51 contact the corresponding elastic plate 3, and the contact portions 52 on the outer side of the connecting portions 51 contact the corresponding elastic plate 4. The contact portions 52 support the elastic plates 3 and 4, which helps to improve the sealing effect of the device.

[0037] Reference Figure 1 and Figure 2The fixed plate 5, elastic plate 3, and elastic plate 4 cooperate to form a movable chamber, providing a deformable space for the sealing ring body 1 in the radial direction. The upper end of the fixed plate 5 is covered with a flexible sealing ring 6, which keeps the movable chamber in a sealed state. When the space where the connecting part 51 is located is under high pressure, the connecting part 51 applies axial pressure to the elastic plate 3 and elastic plate 4 through the contact part 52 under pressure, causing the contact part 52 to slide along the elastic plate 3 and elastic plate 4, causing the elastic plate 3 and elastic plate 4 to separate from each other. In turn, the elastic plate 3 and elastic plate 4 push the sealing ring body 1 to expand radially and always keep it in contact with the inner wall of the rotating shaft and bushing, thereby improving the sealing effect of the sealing ring body 1.

[0038] Reference Figure 2 Elastic sheet 3 and elastic sheet 4 are provided with grooves 31 corresponding to the contact part 52 along the circumferential direction. The contact part 52 is inserted into the groove 31 and slides along the length of the groove 31 to connect with the inner wall of the groove 31. The groove 31 limits the displacement of the elastic sheet along the width of the groove 31. The upper ends of elastic sheet 3 and elastic sheet 4 are provided with baffles 34 extending towards the middle of the V-groove 2 to reduce the probability of the contact part 52 slipping out of the groove 31 and improve the stability of the sliding of the contact part 52.

[0039] Reference Figure 2 The sealing ring body 1 has a square groove 11 circumferentially opened on the side near the rotating shaft. A star-shaped ring 12 is placed in the square groove 11. The star-shaped ring 12 is in contact with the rotating shaft and always keeps in close contact under the pushing action of the rotating shaft and the inner wall of the bushing, which is conducive to improving the working stability and sealing effect of the sealing ring.

[0040] Reference Figure 2 A circular groove 13 is provided circumferentially on the side of the sealing ring body 1 away from the V-shaped groove 2. A spring ring 14 is placed in the circular groove 13. The spring ring 14 tends to tighten the sealing ring body 1 in its natural state, so that the sealing ring body 1 always keeps in contact with the rotating shaft during the rotation of the shaft, which is beneficial to improving the sealing effect of the sealing ring.

[0041] Reference Figure 2 The sealing ring body 1 has several wavy protrusions 7 evenly distributed circumferentially on the side away from the rotating shaft. During the rotation of the shaft, the sealing ring body 1 is always in contact with the inner wall of the bushing and is squeezed. The gap between adjacent wavy protrusions 7 provides deformation space after the wavy protrusions 7 are squeezed, which is beneficial to improving the sealing effect and installation stability of the sealing ring.

[0042] The implementation principle of the high-pressure resistant sealing ring under motion stress in this application embodiment is as follows: When the sealing ring is subjected to high external air pressure, the sealed active chamber causes the upper end of the connecting part 51 to be in a high-pressure state. The connecting part 51 applies pressure to the corresponding elastic sheet 3 and elastic sheet 4 through the contact part 52, causing the elastic sheet 3 and elastic sheet 4 to move away from each other, thereby causing the sealing ring body 1 to expand radially and always keep in contact with the inner wall of the rotating shaft and bushing, which is beneficial to improving the working stability and sealing effect of the sealing ring.

[0043] Example 2

[0044] The difference between this embodiment and embodiment 1 is that elastic sheet 3 and elastic sheet 4 are directly fixedly connected to the inner wall of the V-groove 2 by adhesive bonding.

[0045] Reference Figure 3 Both elastic sheet 3 and elastic sheet 4 are fixedly connected and fitted to the inner wall of the V-groove 2, reducing the probability of elastic sheet 3 and elastic sheet 4 falling out of the V-groove 2. No secondary assembly is required, which helps to improve the working stability and ease of use of the sealing ring assembly.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-pressure resistant sealing ring for motion stress, comprising a sealing ring body (1), characterized in that: The upper end of the sealing ring body (1) is provided with a V-shaped groove (2) along the axis. The side of the sealing ring away from the V-shaped groove (2) is flat. An elastic sheet one (3) is laid on the side wall of the V-shaped groove (2) near the axis, and an elastic sheet two (4) is laid on the side wall of the V-shaped groove (2) away from the axis. The elastic sheet one (3) and the elastic sheet two (4) are fixedly connected on the side close to each other. After the elastic sheet one (3) and the elastic sheet two (4) are connected, the cross-section along the axis is V-shaped and made of elastic material. The elastic sheet one (3) and the elastic sheet two (4) are connected. Several fixed plates (5) are evenly arranged between the two plates (4). The gap between the elastic plate one (3), the elastic plate two (4) and the fixed plate (5) forms an active chamber. The elastic plate one (3) and the elastic plate two (4) are in contact with the fixed plate (5). The fixed plate (5) is made of elastic material. All the fixed plates (5) are evenly covered with flexible sealing rings (6) in the circumferential direction, so that the active chamber is in a sealed state. The side of the elastic plate one (3) and the elastic plate two (4) that are far away from each other both have baffles (34) extending towards the fixed plate (5).

2. The high-pressure resistant sealing ring for motion stress according to claim 1, characterized in that: A connecting plate (32) is fixed at the connection between the first elastic sheet (3) and the second elastic sheet (4). A ring (33) is fixed at the end of the connecting plate (32) away from the elastic sheet. A placement groove (15) adapted to the ring (33) is opened in the sealing ring. The ring (33) is inserted into the placement groove (15) and fits against the inner wall of the placement groove (15).

3. The high-pressure resistant sealing ring for motion stress according to claim 1, characterized in that: The elastic sheet one (3) and elastic sheet two (4) are fixedly connected to the inner wall of the V-groove (2) and are in contact with both sides of the inner wall of the V-groove (2).

4. The high-pressure resistant sealing ring for motion stress according to claim 1, characterized in that: The fixing piece (5) includes a connecting part (51) and several contact parts (52). The connecting part (51) is annular, and several contact parts (52) are evenly distributed on both sides inside and outside the connecting part (51). The flexible sealing ring (6) is fixed on the side of the connecting part (51) away from the V-groove (2) and blocks the gap between adjacent contact parts (52). The side of the contact part (52) away from the connecting part (51) is slidably connected to the corresponding elastic piece one (3) or elastic piece two (4). The upper end surface of the connecting part (51) is flat and is directly opposite to the middle position of the V-groove (2).

5. A high-pressure resistant sealing ring for motion stress according to claim 4, characterized in that: Both the first elastic sheet (3) and the second elastic sheet (4) have a plurality of radial grooves (31) adapted to the contact part (52) on the side near the fixed sheet (5). The contact part (52) is located in the corresponding groove (31) and contacts the inner wall of the groove (31).

6. A high-pressure resistant sealing ring for motion stress according to claim 1, characterized in that: A square groove (11) is provided circumferentially on the side of the sealing ring near the rotating shaft, and a star-shaped ring (12) is placed in the square groove (11).

7. A high-pressure resistant sealing ring for motion stress according to claim 1, characterized in that: A circular groove (13) is provided circumferentially on the side of the sealing ring near the rotating shaft. A spring ring (14) is placed in the circular groove (13). In its natural state, the spring ring (14) pushes the sealing ring body (1) close to the rotating shaft. The spring ring (14) and the star-shaped ring (12) are arranged alternately.

8. A high-pressure resistant sealing ring for motion stress according to claim 1, characterized in that: The sealing ring is fixed with a wavy protrusion (7) along the circumferential direction on the side opposite to the rotating shaft.

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