Novel spherical floating oil seal
By improving the structural design of the spherical floating oil seal and using high-pressure gas filling and a spherical floating seal ring, the problem of elastic part loss is solved, better sealing effect and stability are achieved, and the leakage rate is reduced.
Patent Information
- Application Number
- CN202423236325.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-27
AI Technical Summary
During the use of existing spherical floating oil seals, the internal floating ring shakes at high frequency for a long time, causing the elastic part to be worn out, thus affecting the oil seal effect.
The structure is designed to include two floating seal seats, floating seal rings, connecting rings, elastic sealing strips, rubber rings and insert rings. Through high-pressure gas filling and spherical design, the sealing effect is enhanced, wear and shaking are reduced, and stability is improved.
It enhances the sealing effect of the oil seal, reduces wear, improves adaptability to shaft displacement and vibration, and ensures the stability and service life of the oil seal.
Smart Images
Figure CN223469728U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of floating oil seals, in particular to a novel spherical floating oil seal. Background Art
[0002] A spherical floating oil seal is a device used to seal rotating shafts. It mainly consists of two metal floating seal rings and two rubber sealing rings. The outer peripheral surface of the floating seal ring is spherical in shape, which can better adapt to the displacement and vibration of the shaft, reduce installation errors, and avoid oil leakage caused by unclear floating of the floating seal ring, thereby ensuring the normal operation of the lubrication and hydraulic systems inside the equipment. In equipment such as industrial gearboxes, it can control the leakage rate at a very low level, reducing equipment failures and maintenance costs caused by oil leakage.
[0003] In the prior art, during the use of a spherical floating oil seal, the internal floating ring will cause long-term high-frequency shaking of the connecting shaft, which will cause extrusion and friction on the elastic ring inside the oil seal, causing loss of the elastic parts inside the oil seal, affecting the use effect of the elastic ring, and thus affecting the overall oil sealing effect of the oil seal. Utility Model Content
[0004] The purpose of the utility model is to solve the problem in the prior art that during the use of a spherical floating oil seal, the internal floating ring follows the high-frequency shaking of the connecting shaft for a long time, which causes extrusion and friction on the elastic ring inside the oil seal, causes loss of the elastic parts inside the oil seal, affects the use effect of the elastic ring, and thus affects the overall oil sealing effect of the oil seal. A new spherical floating oil seal is proposed.
[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0006] A new type of spherical floating oil seal includes two floating seal seats, which are symmetrically arranged with the corresponding sides of the two floating seal seats being fitted together. Floating seal rings are respectively provided inside the two floating seal seats. The corresponding sides of the floating seal seats and the floating seal rings are respectively provided with arc-shaped concave surfaces. A connecting ring is provided in the gap between the floating seal seat and the floating seal ring. Elastic sealing strips are fixedly connected to both sides of the connecting ring. The inner side wall of the floating seal ring is set to a spherical surface.
[0007] Preferably, the cross-section of the two elastic sealing strips is set to be arc-shaped and the side away from the connecting ring is respectively arranged on the inner wall of the floating seal seat and the floating seal ring located on the arc-shaped concave surface, and the gap between the connecting ring and the elastic sealing strip is filled with high-pressure gas.
[0008] Preferably, a rubber ring is provided on the side wall of the floating seal seat, and the rubber ring is arranged to be a plane relative to a side surface of the floating seal seat.
[0009] Preferably, the side wall of the floating seal seat is provided with an annular notch, the rubber ring is fixedly connected with a fixing ring on the planar side wall, and the fixing ring extends to the side wall of the floating seal seat in the annular notch.
[0010] Preferably, the side of the fixing ring away from the rubber ring is fixedly connected with a plug ring, the inner wall of the floating seal seat in the annular notch is provided with an annular insertion groove, and the plug ring is insertedly arranged on the inner wall of the annular insertion groove.
[0011] Preferably, the side wall of the plug ring is fixedly connected with an elastic lug, the inner wall of the floating seal seat in the annular insertion groove is provided with a clamping groove, and the elastic lug is clampingly arranged on the inner wall of the floating seal seat in the clamping groove.
[0012] Preferably, the inner wall of the floating seal ring in the spherical surface is fixedly connected with a plurality of reinforced sealing rubber strips.
[0013] Compared with the prior art, the novel spherical floating oil seal has the following beneficial effects:
[0014] 1. The novel spherical floating oil seal can make the elastic sealing strips on both sides of the connecting ring tightly arranged on the side walls of the floating seal seat and the floating seal ring by deforming the elastic sealing strips squeezed by the floating seal ring, can guarantee the oil sealing effect, and can exert pressure on the elastic sealing strips by arranging high-pressure gas at the gap between the elastic sealing strips and the connecting ring, so that the novel spherical floating oil seal not only has a certain buffering and damping effect, but also can keep the elastic sealing strips always arranged on the side walls of the floating seal seat or the floating seal ring when the edges of the elastic sealing strips are abraded, thereby guaranteeing the use effect.
[0015] 2. The novel spherical floating oil seal can prevent the floating seal ring from moving out to the outside of the floating seal seat in the arc-shaped groove when the floating seal ring shakes by arranging the floating seal ring in the inner recesses on both sides of the arc-shaped surface and extending to the inner side of the floating seal seat in the arc-shaped surface, the inner side of the floating seal ring is arranged as a spherical surface, the spherical surface can better adapt to the displacement and vibration of the shaft, reduce the installation error, avoid oil leakage caused by the floating of the floating seal ring being not obvious, and the reinforced sealing rubber strips can improve the sealing effect of the floating seal ring on the shaft body.
[0016] 3. The novel spherical floating oil seal can improve the sealing effect of the edge of the floating seal seat by the rubber ring, and the fixing ring is fixedly arranged on one side of the rubber ring in the plane and extends to the inner wall of the floating seal seat in the annular notch, so as to reduce the abrasion between the sealing ring and the floating seal seat.
[0017] 4. The novel spherical floating oil seal can improve the stability of the fixed ring by inserting the plug ring into the inner part of the annular insertion groove, and the side wall of the plug ring is provided with an elastic lug and clampingly arranged in the inner part of the clamping groove, so that the plug ring can be stably connected in the inner part of the floating seal seat in the annular insertion groove, and the stability of the rubber ring during use can be improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic structural diagram of a new type of spherical floating oil seal proposed by the utility model;
[0019] Figure 2 for Figure 1 A side sectional view of one of the floating seal seats;
[0020] Figure 3 for Figure 2 A schematic diagram of the structure of the partial A in the middle part;
[0021] Figure 4 for Figure 1 Schematic diagram of the structural explosion inside one of the floating seal seats.
[0022] In the figure: 1 floating seal seat, 2 floating seal ring, 3 connecting ring, 4 elastic sealing strip, 5 rubber ring, 6 fixing ring, 7 insert ring, 8 elastic protrusion, 9 reinforced sealing rubber strip. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0024] Reference Figures 1-4 A new type of spherical floating oil seal includes two floating seal seats 1, which are symmetrically arranged with each other, and the corresponding sides of the two floating seal seats 1 are fitted with each other. Floating seal rings 2 are respectively provided inside the two floating seal seats 1, and the corresponding sides of the floating seal seats 1 and the floating seal rings 2 are respectively provided with arc-shaped concave surfaces. A connecting ring 3 is provided in the gap between the floating seal seat 1 and the floating seal ring 2, and elastic sealing strips 4 are fixedly connected on both sides of the connecting ring 3. The inner side wall of the floating seal ring 2 is set to a spherical surface, and a plurality of reinforced sealing rubber strips 9 are fixedly connected to the inner wall of the floating seal ring 2 located on the spherical surface.
[0025] The cross-section of the two elastic sealing strips 4 is set to be arc-shaped and the side away from the connecting ring 3 is respectively arranged on the inner wall of the floating seal seat 1 and the floating seal ring 2 located on the arc-shaped concave surface. The gap between the connecting ring 3 and the elastic sealing strip 4 is filled with high-pressure gas.
[0026] A rubber ring 5 is provided on the side wall of the floating seal seat 1. The rubber ring 5 is set to be a plane relative to one side of the floating seal seat 1. An annular recess is provided on the side wall of the floating seal seat 1. The rubber ring 5 is located on the side wall of the plane and is fixedly connected to a fixing ring 6. The fixing ring 6 extends to the side wall of the floating seal seat 1 located on the annular recess.
[0027] The floating seal seat 1 is fixedly arranged outside the rotating shaft body, and two floating seal seats 1 are symmetrically arranged to ensure the oil sealing effect, the floating seal ring 2 is fixedly sleeved on the shaft wall of the rotating shaft body, can rotate with the rotating shaft body, and can displace in the floating seal seat 1 with the shaking of the rotating shaft body, the elastic sealing strips 4 on both sides of the connecting ring 3 are pressed and arranged on the side walls of the floating seal seat 1 and the floating seal ring 2 through the deformation of the elastic sealing strips 4 extruded by the floating seal ring 2, so that the elastic sealing strips 4 can be ensured to be tightly arranged on the side walls of the floating seal seat 1 and the floating seal ring 2, and the oil sealing effect can be ensured, and the gap between the elastic sealing strips 4 and the connecting ring 3 is provided with high-pressure gas, so that the elastic sealing strips 4 can be pressed, which can not only play a certain buffering and damping effect, but also can extrude the elastic sealing strips 4 to keep the elastic sealing strips 4 always arranged on the side walls of the floating seal seat 1 or the floating seal ring 2 when the edges of the elastic sealing strips 4 are abraded, so that the use effect is ensured.
[0028] The floating seal ring 2 is arranged in the arc-shaped concave surface and extends to the inner side of the floating seal seat 1 located in the arc-shaped concave surface, so that the floating seal ring 2 cannot move out to the outer side of the floating seal seat 1 located in the arc-shaped concave surface when the floating seal ring 2 shakes, the inner side of the floating seal ring 2 is provided with a spherical surface, so that the displacement and vibration of the shaft can be better adapted, the installation error can be reduced, the oil leakage caused by the floating of the floating seal ring 2 being not obvious can be avoided, and the sealing rubber strip 9 can improve the sealing effect of the floating seal ring 2 on the rotating shaft body.
[0029] The rubber ring 5 can improve the sealing effect of the edges of the floating seal seat 1, and the fixed ring 6 is fixedly arranged on one side of the rubber ring 5 located in the plane and extends to the inner wall of the floating seal seat 1 located in the annular recess, so that the abrasion between the sealing ring 5 and the floating seal seat 1 can be reduced.
[0030] In order to improve the stability of the rubber ring 5 during use, as shown in Figures 1-4 The side, away from the rubber ring 5, of the fixed ring 6 is fixedly connected with the insertion ring 7, the inner wall of the annular insertion slot of the floating seal seat 1 is provided with the annular insertion slot, the insertion ring 7 is insertedly arranged in the inner wall of the annular insertion slot, the side wall of the insertion ring 7 is fixedly connected with the elastic protrusion 8, the inner wall of the annular insertion slot of the floating seal seat 1 is provided with the clamping groove, and the elastic protrusion 8 is clampingly arranged in the inner wall of the clamping groove of the floating seal seat 1.
[0031] The insertion ring 7 is insertedly arranged in the inner wall of the annular insertion slot, so that the stability of the connection of the fixed ring 6 can be improved, the side wall of the insertion ring 7 is provided with the elastic protrusion 8 and is clampingly arranged in the inner wall of the clamping groove, so that the insertion ring 7 can be stably connected in the inner wall of the annular insertion slot of the floating seal seat 1, and the stability of the rubber ring 5 during use can be improved.
[0032] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.
Claims
1. A novel spherical floating oil seal comprising two floating seal seats (1) characterized in that: Two floating seal seats (1) are symmetrically arranged, and the corresponding sides of the two floating seal seats (1) are arranged in close contact with each other, and the inner sides of the two floating seal seats (1) are respectively provided with floating seal rings (2), and the corresponding sides of the floating seal seat (1) and the floating seal ring (2) are respectively provided with arc-shaped concave surfaces, and the gap between the floating seal seat (1) and the floating seal ring (2) is provided with a connecting ring (3), and the two sides of the connecting ring (3) are respectively fixedly connected with elastic sealing strips (4), and the inner side wall of the floating seal ring (2) is provided as a spherical surface.
2. A novel spherical floating oil seal as claimed in claim 1, wherein: The cross sections of the two elastic sealing strips (4) are arranged as arcs and the sides away from the connecting ring (3) are respectively arranged in close contact with the inner walls of the arc-shaped concave surfaces of the floating seal seat (1) and the floating seal ring (2), and the gap between the connecting ring (3) and the elastic sealing strip (4) is filled with high-pressure gas.
3. A novel spherical floating oil seal as claimed in claim 1, wherein: The side wall of the floating seal seat (1) is provided with a rubber ring (5), and the side of the rubber ring (5) relative to the floating seal seat (1) is provided as a plane.
4. A novel spherical floating oil seal as claimed in claim 3, wherein: The side wall of the floating seal seat (1) is provided with an annular notch, and the side wall of the rubber ring (5) located on the plane is fixedly connected with a fixed ring (6), and the fixed ring (6) extends to the side wall of the floating seal seat (1) located in the annular notch.
5. A novel spherical floating oil seal as claimed in claim 4, wherein: The side away from the rubber ring (5) of the fixed ring (6) is fixedly connected with an insertion ring (7), and the inner wall of the floating seal seat (1) located in the annular notch is provided with an annular insertion slot, and the insertion ring (7) is insertedly arranged in the inner wall of the annular insertion slot.
6. A novel spherical floating oil seal as claimed in claim 5, wherein: The side wall of the insertion ring (7) is fixedly connected with an elastic protrusion (8), and the inner wall of the floating seal seat (1) located in the annular insertion slot is provided with a clamping groove, and the elastic protrusion (8) is clampedly arranged in the inner wall of the floating seal seat (1) located in the clamping groove.
7. A novel spherical floating oil seal as claimed in claim 1, wherein: The inner wall of the floating seal ring (2) located on the spherical surface is fixedly connected with a plurality of reinforced sealing rubber strips (9).