Spring seal ring for rotary shaft

Abstract

The utility model discloses a spring sealing ring for rotary shaft convenient to assemble relates to the field of sealing ring technology, it includes seal ring one and seal ring two, seal ring one includes inner ring, outer ring and connecting ring, and connecting ring connects inner ring and outer ring, and the side of inner ring is away from outer ring and is equipped with the accommodating groove along the circumference, and the spring ring is placed in the accommodating groove, and the side of inner ring is away from the accommodating groove is equipped with the abutment ring, and the one end of inner ring is away from connecting ring and is fixedly equipped with the shielding ring no.

Description

Technical Field

[0001] This utility model relates to the field of sealing ring technology, and in particular to a spring sealing ring for a rotating shaft that is easy to assemble. Background Technology

[0002] Currently, spring seals are widely used in sealing mechanisms. Traditional spring seals are placed on the inner ring of the bushing and fitted onto the outside of the rotating shaft to seal the lubricating oil inside the shaft and prevent external impurities from entering between the shaft and the bushing.

[0003] Related technology can be found in Chinese Patent No. CN217029927U, which discloses a combined sealing ring assembly, including a housing and a sealing ring. The housing has an axially penetrating first through hole and an annular groove opening towards the central axis, the annular groove accommodating the sealing ring. The sealing ring has an axially penetrating second through hole, and the sealing ring is coaxially arranged in the annular groove. The first through hole, the second through hole, and the annular groove are coaxially arranged, and the hardness of the housing is greater than that of the sealing ring. This utility model proposes a combined sealing ring assembly where the housing, located outside the sealing ring, effectively protects the sealing ring, reducing the impact force of external forces on the sealing ring. Simultaneously, the sealing ring and housing are detachably connected for easy replacement.

[0004] Regarding the aforementioned technologies, the sealing ring assembly is made of flexible material and has a split structure design. It is prone to separation when squeezed during assembly, making assembly inconvenient and affecting the stability of the sealing ring assembly in use. Utility Model Content

[0005] To improve the stability of the sealing ring assembly, this application provides a spring sealing ring for a rotating shaft that is easy to assemble.

[0006] This application provides a spring seal ring for a rotating shaft that is easy to assemble, using the following technical solution: A spring seal for a rotating shaft that is easy to assemble includes a first sealing ring and a second sealing ring. The second sealing ring is located inside the first sealing ring. The first sealing ring includes an inner ring and an outer ring, and a connecting ring is fixed between the inner ring and the outer ring. The inner ring, the outer ring, and the connecting ring cooperate to form a mounting cavity for installing the second sealing ring. The second sealing ring includes a horizontal ring and a vertical ring. When the vertical ring is located in the mounting cavity, it fits against the inner wall of the outer ring. A receiving groove is formed circumferentially on the side of the inner ring near the outer ring. A spring ring is placed in the receiving groove. In its natural state, the spring ring causes the inner ring to tighten. The connecting ring and the outer ring are mounted on the same support plate. The support plate is made of elastic material. An elastic element is fixed on the side of the support plate near the outer ring. The elastic element is used to push the vertical ring close to the outer ring. A fixing groove is formed circumferentially on the inner wall of the outer ring. A fixing strip corresponding to the fixing groove is formed circumferentially on the side of the horizontal ring near the outer ring. When the fixing strip is located in the fixing groove, it fits against the inner wall of the fixing groove.

[0007] By adopting the above technical solution, sealing ring one provides support for sealing ring two, and the connecting ring connects the inner ring and the outer ring. When the sealing ring assembly is in use, the inner ring abuts against the rotating shaft, and the outer ring abuts against the inner wall of the bushing. The mounting cavity provides space for the deformation of the sealing ring, and the fixing groove fixes and limits the fixing strip, thereby fixing and limiting the vertical ring of the outer ring. At the same time, the outer ring supports the horizontal ring through the vertical ring, and the support plate supports the connecting ring and the outer ring, reducing the probability of deformation of the sealing ring assembly. In its natural state, the spring ring tightens the inner ring, so that sealing ring one is in close contact and fits the rotating shaft. The elastic element cooperates with the outer ring to clamp and fix the vertical ring, thereby enabling sealing ring one to support and fix sealing ring two, which is beneficial to improving the assembly convenience and usage stability of the sealing ring assembly.

[0008] Optionally, the elastic element includes an elastic ring, and an arc-shaped ring is fixed between the elastic ring and the support plate. In its natural state, the arc-shaped ring pushes the elastic ring closer to the outer ring. The end of the elastic ring away from the support plate is close to the outer ring. A circular groove adapted to the elastic ring is opened on the side of the vertical ring close to the inner ring. When the elastic ring is in the circular groove, it is in a deformed state and pushes the vertical ring closer to the outer ring.

[0009] By adopting the above technical solution, the support plate supports the elastic ring through the arc-shaped ring. In its natural state, the arc-shaped ring pushes the elastic ring closer to the outer ring. When the horizontal ring is pressed, the elastic ring is inserted into the circular groove along the inner wall of the circular groove. The elastic ring and the outer ring cooperate to clamp the vertical ring, which helps to improve the working stability of the sealing ring assembly.

[0010] Optionally, the elastic ring has several separation openings along its circumference.

[0011] By adopting the above technical solution, the elastic ring is evenly divided into several segments along the radial direction, so that each segment of the elastic ring has deformable space along the radial direction of the sealing ring assembly, which is beneficial to improving the assembly convenience of the sealing ring assembly.

[0012] Optionally, the elastic element includes an elastic sheet, one end of which is fixedly connected to a support plate. In its natural state, the elastic sheet pushes the vertical ring close to the outer ring. A baffle is vertically fixed at the end of the elastic sheet away from the connecting ring. A horizontal plate is fixedly connected to the side of the inner ring close to the outer ring, and the horizontal plate is directly opposite the elastic sheet. A slot is provided on the side of the baffle close to the elastic sheet. A second baffle is fixedly connected to the side of the horizontal plate away from the inner ring. When the second baffle is in the slot, the elastic sheet is in a deformed state and away from the outer ring. A push block is fixedly connected to the lower end face of the horizontal ring. When the vertical ring is located inside the outer ring and coaxial with the outer ring, the push block is located between the inner ring and the elastic sheet. The side of the push block has an inclined surface corresponding to the horizontal plate. When the horizontal plate moves along the inclined surface, it gradually shifts away from the elastic sheet.

[0013] By adopting the above technical solution, in the initial state, the support plate supports the elastic sheet. When the second baffle is inserted into the slot, the second baffle limits the first baffle through the slot, thereby limiting the elastic sheet by the horizontal plate. After the first sealing ring is assembled onto the second sealing ring, the horizontal ring is pressed towards the connecting ring. The horizontal ring deforms, and the push block is inserted between the horizontal plates on the side close to the horizontal plate. When the inclined surface of the push block contacts the horizontal plate, the push block pushes the horizontal plate to shift to both sides through the inclined surface. The horizontal plate drives the second baffle to disengage from the first baffle. At this time, the elastic sheet is reset and cooperates with the outer ring to clamp the vertical ring, thereby improving the convenience of sealing ring assembly installation.

[0014] Optionally, an abutment ring is fixed on the side of the inner ring away from the receiving groove. The width of the abutment ring gradually decreases along the axial direction towards the axis, and the minimum width point is directly opposite the receiving groove.

[0015] By adopting the above technical solution, during the operation of the sealing ring assembly, the abutment ring contacts the rotating shaft, and under the tightening action of the spring ring, it makes close contact with the surface of the rotating shaft, so that the sealing ring 1 fits tightly with the rotating shaft, which is beneficial to improving the stability of the device operation.

[0016] Optionally, a shielding ring is fixed on the side of the inner ring away from the connecting ring. The shielding ring is inclined in a direction away from the abutting ring, and the inner diameter of the shielding ring is smaller than the inner diameter of the abutting ring.

[0017] By adopting the above technical solution, the shielding ring contacts and adheres to the surface of the rotating shaft to prevent external impurities from entering the device and reduce the probability of impurities affecting the operation of the rotating shaft.

[0018] Optionally, a second blocking ring is fixed at the end of the horizontal ring away from the vertical ring. The second blocking ring is inclined in the direction away from the abutting ring, and the inner diameter of the second blocking ring is smaller than the inner diameter of the abutting ring.

[0019] By adopting the above technical solution, the second shielding ring contacts and adheres to the surface of the rotating shaft, thereby sealing the lubricating oil on the surface of the rotating shaft and reducing the probability of lubricating oil leakage.

[0020] Optionally, a support ring is provided circumferentially between the inner ring and the second baffle, and the support ring is in contact with the second baffle.

[0021] By adopting the above technical solution, the support ring supports the shielding ring 1, reducing the probability that the shielding ring 1 will deform during rotation, causing impurities to enter the device.

[0022] Optionally, the outer ring has several wavy protrusions along the axial direction on the side opposite to the inner ring.

[0023] By adopting the above technical solution, during the rotation of the shaft, the sealing ring is pushed to squeeze 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 outer ring.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. Sealing ring one provides support for sealing ring two. The connecting ring connects the inner ring and the outer ring. When the sealing ring assembly is in use, the inner ring abuts against the rotating shaft, and the outer ring abuts against the inner wall of the bushing. The mounting cavity provides space for the deformation of the sealing ring. The fixing groove fixes and limits the fixing strip, thereby fixing and limiting the vertical ring of the outer ring. At the same time, the outer ring supports the horizontal ring through the vertical ring. The support plate supports the connecting ring and the outer ring, reducing the probability of deformation of the sealing ring assembly. In its natural state, the spring ring tightens the inner ring, making sealing ring one in close contact and fit with the rotating shaft. The elastic element cooperates with the outer ring to clamp and fix the vertical ring, thereby enabling sealing ring one to support and fix sealing ring two, which is beneficial to improving the assembly convenience and use stability of the sealing ring assembly. 2. The support plate supports the elastic ring through the arc ring. In its natural state, the arc ring pushes the elastic ring closer to the outer ring. When the horizontal ring is pressed, the elastic ring is inserted into the circular groove along the inner wall of the circular groove. The elastic ring and the outer ring cooperate to clamp the vertical ring, which helps to improve the working stability of the sealing ring assembly. 3. The elastic ring is evenly divided into several segments along the radial direction, so that each segment of the elastic ring has deformable space along the radial direction of the sealing ring assembly, which helps to improve the assembly convenience of the sealing ring assembly. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a spring seal ring for a rotating shaft that is easy to assemble.

[0026] Figure 2 This is a schematic diagram of an elastic ring structure.

[0027] Figure 3 This is a schematic diagram of an elastic sheet structure.

[0028] Explanation of reference numerals in the attached drawings: 1. Sealing ring one; 11. Inner ring; 111. Blocking ring one; 112. Support ring; 113. Receiving groove; 114. Spring ring; 115. Abutment ring; 12. Outer ring; 121. Fixing groove; 122. Support plate; 123. Wavy protrusion; 13. Connecting ring; 2. Sealing ring two; 21. Horizontal ring; 211. Blocking ring two; 22. Vertical ring; 221. Fixing strip; 222. Circular groove; 3. Elastic ring; 31. Arc-shaped ring; 4. Elastic sheet; 41. Baffle one; 411. Slot; 42. Horizontal plate; 43. Baffle two; 44. Push block. Detailed Implementation

[0029] The present application will be further described in detail below with reference to all the accompanying drawings.

[0030] This application discloses a spring seal ring for a rotating shaft that is easy to assemble. Example

[0031] Reference Figure 1 and Figure 2 A spring seal for a rotating shaft that is easy to assemble includes a first sealing ring 1 and a second sealing ring 2. The second sealing ring 2 is inserted into the first sealing ring. The first sealing ring includes an inner ring 11, an outer ring 12, and a connecting ring 13. In the operating state of the seal assembly, the inner ring 11 contacts the rotating shaft, the outer ring 12 fits against the inner wall of the bushing, and the connecting ring 13 connects the inner ring 11 and the outer ring 12. The first sealing ring 1 and the second sealing ring 2 cooperate to form a mounting cavity, providing space for the seal to deform. A support plate 122 is fixedly installed inside the connecting ring 13, supporting the connecting ring 13 and the outer ring 12, reducing the probability of deformation of the seal assembly during shaft rotation.

[0032] Referring to Figure 2, an inner ring 11 has a circumferentially oriented receiving groove 113 on the side near the outer ring 12. A spring ring 114 is placed in the receiving groove 113. In its natural state, the spring ring 114 tightens towards the axis of rotation. An abutment ring 115 is fixed on the side of the inner ring 11 away from the receiving groove 113. The width of the abutment ring 115 gradually decreases towards the axis, and the point of minimum width is directly opposite the receiving groove 113. The spring ring 114 pushes the point of minimum width of the abutment ring 115 to contact and fit with the rotating shaft, thereby making the inner ring 11 fit with the rotating shaft, which is beneficial to improving the sealing effect of the sealing ring assembly.

[0033] Reference 1 and Figure 2 The sealing ring 2 includes a vertical ring 22 and a horizontal ring 21. The vertical ring 22 fits against the inner wall of the outer ring 12, and the horizontal ring 21 is directly opposite the connecting ring 13. A fixing strip 221 is fixedly provided circumferentially on the side of the vertical ring 22 near the outer ring 12. A fixing groove 121 adapted to the fixing strip 221 is opened circumferentially on the inner wall of the outer ring 12. The fixing strip 221 is inserted into the fixing groove 121, thereby limiting the displacement of the vertical ring 22 along the width direction of the outer ring 12 and supporting the horizontal ring 21 at the same time.

[0034] refer to Figure 2An elastic ring 3 is fixedly installed on the support plate 122. An arc-shaped ring 31 connects the elastic ring 3 and the support plate 122. The support plate 122 is supported by the arc-shaped ring 31 and the elastic ring 3. Both the elastic ring 3 and the arc-shaped ring 31 are made of flexible material. In its natural state, the arc-shaped ring 31 pushes the elastic ring 3 closer to the vertical ring 22. A circular groove 222 adapted to the elastic ring 3 is opened on the side of the vertical ring 22 near the elastic ring 3. The elastic ring 3 slides along the inner wall of the circular groove 222 into the circular groove 222. The elastic ring 3 pushes the vertical ring 22 to fit against the outer ring 12 through the circular groove 222. The elastic ring 3 and the outer ring 12 cooperate to fix and limit the vertical ring 22.

[0035] refer to Figure 2 A shielding ring 111 is fixed at the end of the inner ring 11 away from the connecting ring 13. The shielding ring 111 is inclined away from the abutting ring 115. When the sealing ring group is in use, the shielding ring is in contact with the rotating shaft and isolates external impurities. This helps to reduce the probability of external impurities entering between the rotating shaft and the bushing and affecting the operation of the rotating shaft, and helps to improve the sealing effect of the sealing ring group.

[0036] refer to Figure 2 A support ring 112 is installed between the inner ring 11 and the shielding ring 111. The support ring 112 contacts and fits with the rotating shaft and the shielding ring 111. The support ring 112 supports the shielding ring 111, reducing the probability of the shielding ring 111 deforming due to contact with the rotating shaft during operation, which helps to improve the stability of the sealing ring assembly.

[0037] refer to Figure 2 A second shielding ring 211 is fixed on the side of the horizontal ring 21 away from the vertical ring 22. The second shielding ring 211 is inclined away from the abutting ring 115. During the use of the sealing ring assembly, the second shielding ring 211 contacts and fits with the rotating shaft to seal the internal lubricating oil, which helps to reduce the probability of lubricating oil leakage and improve the sealing effect of the sealing ring assembly.

[0038] refer to Figure 2 The outer ring 12 has several wavy protrusions 123 evenly fixed on its outer wall. When the shaft rotates, it pushes the outer ring 12 to contact the inner wall of the bushing. The gap between adjacent wavy protrusions forms a deformable space, which facilitates the deformation of the wavy protrusions 123 after being squeezed, which helps to improve the sealing effect of the sealing ring assembly.

[0039] The implementation principle of a spring seal ring for a rotating shaft that is easy to assemble according to an embodiment of this application is as follows: a second sealing ring 2 is inserted into a first sealing ring 1, an elastic ring 3 is inserted into a circular groove 222, and a fixing strip 221 is inserted into a fixing groove 121. The elastic ring 3 cooperates with the outer ring 12 to clamp and fix the vertical ring 22, thereby fixing the second sealing ring 2 with the first sealing ring 1. The spring ring 114 tightens the abutment ring 115 to make the inner ring 11 fit with the rotating shaft, thereby making the first sealing ring 1 fit with the rotating shaft. The shielding ring 111 seals the internal lubricating oil, and the second shielding ring 211 seals the external impurities, ensuring the sealing effect between the rotating shaft and the bushing. During the assembly process, the sealing ring group only uses the cooperation of the elastic ring 3 and the outer ring 12 to clamp and fix the vertical ring 22, without the need to add external structures to press and fix the sealing ring group, which is beneficial to improving the assembly convenience and use stability of the sealing ring group.

[0040] Example 2 The difference between this embodiment and embodiment 1 is that the support plate 122 does not have an elastic ring 3.

[0041] refer to Figure 3 An elastic sheet 4 is fixedly installed on the support plate 122. The support plate 122 supports the elastic sheet 4. In its natural state, the elastic sheet 4 tends to move closer to the outer ring 12. A baffle 41 is fixedly installed on the side of the elastic sheet 4 away from the support plate 122. A slot 411 is opened on the baffle 41. A horizontal plate 42 is fixedly installed on the inner ring 11. A baffle 43 is fixedly installed on the side of the horizontal plate 42 away from the inner ring 11. The baffle 43 is directly opposite the baffle 41. In the initial state, the elastic sheet 4 is close to the outer ring 12. The operator bends the elastic sheet 4 towards the inner ring 11. The sealing ring 1 is inserted into the sealing ring 2, so that the baffle 43 is inserted into the slot 411. The baffle 43 limits the baffle 41 through the slot 411, thereby fixing and limiting the elastic sheet 4 on the horizontal plate 42.

[0042] refer to Figure 3 A push block 44 is fixedly provided on the lower end face of the horizontal ring 21. The push block 44 is located between the inner ring 11 and the elastic plate 4. The push block 44 has inclined surfaces on both sides. When the sealing ring is assembled, the horizontal ring 21 is pressed, the horizontal ring 21 deforms, and the push block 44 is inserted into the horizontal plate 42 on the side close to the connecting ring 13. When the inclined surface of the push block 44 contacts the horizontal plate 42, the push block 44 pushes the horizontal plate 42 to shift to both sides through the inclined surface, which finally releases the limit of the second baffle 43 on the first baffle 41. At this time, the elastic plate 4 is reset and moves closer to the outer ring 12, pushing the vertical ring 22 closer to the outer ring 12 and fitting together. The elastic plate 4 and the outer ring 12 cooperate to fix and limit the vertical ring 22, which helps to improve the convenience of sealing ring installation.

[0043] 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 spring seal for a rotating shaft that is easy to assemble, comprising a first sealing ring (1) and a second sealing ring (2), wherein the second sealing ring (2) is located inside the first sealing ring (1), characterized in that: The sealing ring one (1) includes an inner ring (11) and an outer ring (12). A connecting ring (13) is fixed between the inner ring (11) and the outer ring (12). The inner ring (11) and the outer ring (12) are connected by the connecting ring (13). The inner ring (11), the outer ring (12) and the connecting ring (13) cooperate to form a mounting cavity for installing the sealing ring two (2). The sealing ring two (2) includes a horizontal ring (21) and a vertical ring (22). When the vertical ring (22) is located in the mounting cavity, it fits against the inner wall of the outer ring (12). A receiving groove (113) is provided circumferentially on the side of the inner ring (11) near the outer ring (12). A spring ring (114) is placed in the receiving groove (113). In its natural state, the spring ring (114) drives the inner ring (11) to tighten. The connecting ring (13) and the outer ring (12) are equipped with the same support plate (122). The support plate (122) is made of elastic material. An elastic element is fixed on the side of the support plate (122) near the outer ring (12). The elastic element is used to push the vertical ring (22) close to the outer ring (12). A fixing groove (121) is opened along the circumference of the inner wall of the outer ring (12). A fixing strip (221) corresponding to the fixing groove (121) is opened along the circumference of the side of the horizontal ring (21) near the outer ring (12). When the fixing strip (221) is located in the fixing groove (121), it fits against the inner wall of the fixing groove (121).

2. The easily assembled spring seal ring for a rotating shaft according to claim 1, characterized in that: The elastic element includes an elastic ring (3), and an arc-shaped ring (31) is fixed between the elastic ring (3) and the support plate (122). In its natural state, the arc-shaped ring (31) pushes the elastic ring (3) closer to the outer ring (12). The end of the elastic ring (3) away from the support plate (122) is close to the outer ring (12). A circular groove (222) adapted to the elastic ring (3) is opened on the side of the vertical ring (22) close to the inner ring (11). When the elastic ring (3) is in the circular groove (222), it is in a deformed state and pushes the vertical ring (22) closer to the outer ring (12).

3. A spring seal ring for a rotating shaft that is easy to assemble according to claim 2, characterized in that: The elastic ring (3) has several separation openings along its circumference.

4. A spring seal ring for a rotating shaft that is easy to assemble according to claim 1, characterized in that: The elastic element includes an elastic sheet (4), one end of which is fixedly connected to the support plate (122). In its natural state, the elastic sheet (4) pushes the vertical ring (22) close to the outer ring (12). A baffle (41) is vertically fixed at the end of the elastic sheet (4) away from the connecting ring (13). A horizontal plate (42) is fixedly connected to the side of the inner ring (11) near the outer ring (12). The horizontal plate (42) is directly opposite the elastic sheet (4). A slot (411) is provided on the side of the baffle (4) near the elastic sheet (4). The horizontal plate (42) is away from the inner ring (11). A baffle (43) is fixedly connected to one side. When the baffle (43) is located in the slot (411), the elastic sheet (4) is in a deformed state and away from the outer ring (12). A push block (44) is fixedly connected to the lower end face of the horizontal ring (21). When the vertical ring (22) is located inside the outer ring (12) and coaxial with the outer ring (12), the push block (44) is located between the inner ring (11) and the elastic sheet (4). The side of the push block (44) is provided with an inclined surface corresponding to the horizontal plate (42). When the horizontal plate (42) moves along the inclined surface, it gradually shifts away from the elastic sheet (4).

5. A spring seal ring for a rotating shaft that is easy to assemble according to claim 1, characterized in that: The inner ring (11) is fixed with an abutment ring (115) on the side away from the receiving groove (113). The width of the abutment ring (115) gradually decreases towards the axis, and the minimum width is directly opposite the receiving groove (113).

6. A spring seal ring for a rotating shaft that is easy to assemble according to claim 5, characterized in that: A shielding ring (111) is fixed on the side of the inner ring (11) away from the connecting ring (13). The shielding ring (111) is inclined in a direction away from the abutting ring (115), and the inner diameter of the shielding ring (111) is smaller than the inner diameter of the abutting ring (115).

7. A spring seal ring for a rotating shaft that is easy to assemble according to claim 5, characterized in that: The horizontal ring (21) is fixed with a second shielding ring (211) at one end away from the vertical ring (22). The second shielding ring (211) is inclined away from the abutting ring (115), and the inner diameter of the second shielding ring (211) is smaller than the inner diameter of the abutting ring (115).

8. A spring seal ring for a rotating shaft that is easy to assemble according to claim 1, characterized in that: A support ring (112) is provided circumferentially between the inner ring (11) and the second baffle (43), and the support ring (112) is in contact with the second baffle (43).

9. A spring seal ring for a rotating shaft that is easy to assemble according to claim 1, characterized in that: The outer ring (12) has several wave-like protrusions (123) along the axial direction on the side opposite to the inner ring (11).

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