Search

CN-224214697-U - High-speed oil seal for forward and reverse rotation of shaft body

CN224214697UCN 224214697 UCN224214697 UCN 224214697UCN-224214697-U

Abstract

The application relates to the technical field of structural sealing, in particular to a high-speed oil seal for forward and backward rotation of a shaft body, which comprises an elastic sealing body, an inner bone ring plate, a reverse elastic ring plate and a forward elastic ring plate, wherein the elastic sealing body is used for forming sealing with a shaft shell, the elastic sealing body is arranged on the outer side of the inner bone ring plate, the reverse elastic ring plate and the forward elastic ring plate are both arranged on the inner side of the inner bone ring plate, the reverse elastic ring plate and the forward elastic ring plate are both used for being sleeved on the shaft body, an oil storage cavity is formed among the reverse elastic ring plate, the forward elastic ring plate and the shaft body, when the shaft body rotates clockwise around the axis of the shaft body, a reverse spiral groove which is clockwise around the axis of the shaft body is formed on the reverse elastic ring plate, and the forward spiral groove which is anticlockwise around the axis of the shaft body is formed on the forward elastic ring plate is attached to the outer side wall of the shaft body. The application has the effect of improving the tightness of the shaft body in the forward rotation and reverse rotation processes.

Inventors

  • HE JIANJUN
  • SUN YUYUAN
  • ZHANG WENHUI
  • XU YUAN

Assignees

  • 常州绍鼎密封科技有限公司

Dates

Publication Date
20260508
Application Date
20250625

Claims (8)

  1. 1. The high-speed oil seal for forward and backward rotation of the shaft body is characterized by comprising an elastic sealing body (2), an inner bone ring plate (3), a reverse elastic ring plate (4) and a forward elastic ring plate (5), wherein the elastic sealing body (2) is used for forming a seal with a shaft housing, the elastic sealing body (2) is arranged on the outer side of the inner bone ring plate (3), the reverse elastic ring plate (4) and the forward elastic ring plate (5) are both arranged on the inner side of the inner bone ring plate (3), the reverse elastic ring plate (4) and the forward elastic ring plate (5) are both used for being sleeved on the shaft body (1), an oil storage cavity (6) is formed between the reverse elastic ring plate (4) and the shaft body (1), when the shaft body (1) rotates clockwise around the axis of the shaft body, a reverse spiral groove (7) which is clockwise arranged on the reverse elastic ring plate (4) around the axis direction of the shaft body (1), and the forward spiral groove (8) is formed on the reverse spiral groove (8) around the axis of the shaft body (1).
  2. 2. The high-speed oil seal for forward and backward rotation of a shaft body according to claim 1, wherein the forward elastic ring plate (5) is provided with a bending ring groove (9).
  3. 3. A high-speed oil seal for forward and reverse rotation of a shaft body according to claim 2, wherein the forward spiral groove (8) is not communicated with the inner diameter side wall of the forward elastic ring plate (5) and the outer diameter side wall of the forward elastic ring plate (5), and the reverse spiral groove (7) is not communicated with the inner diameter side wall of the reverse elastic ring plate (4) and the outer diameter side wall of the reverse spiral groove (7) is not communicated with the outer diameter side wall of the reverse elastic ring plate (4).
  4. 4. A high-speed oil seal for forward and reverse rotation of a shaft body according to claim 1, wherein the reverse elastic ring plate (4) is provided with a limiting convex ring (10), and the limiting convex ring (10) is positioned between the reverse spiral groove (7) and the inner diameter side wall of the reverse elastic ring plate (4).
  5. 5. The high-speed oil seal for forward and reverse rotation of a shaft body according to claim 1, wherein a plurality of sealing protrusions (11) are arranged on the circumferential outer side wall of the elastic sealing body (2), and the plurality of sealing protrusions (11) are uniformly distributed along the axial direction of the inner bone ring plate (3).
  6. 6. The high-speed oil seal for forward and reverse rotation of a shaft body according to claim 1, wherein an outer bone ring plate (12) is arranged on the elastic sealing body (2), an elastic dustproof lip ring (13) is coaxially arranged on the inner side of the outer bone ring plate (12), and the elastic dustproof lip ring (13) is abutted against the outer side wall of the shaft body (1).
  7. 7. A high-speed oil seal for forward and backward rotation of a shaft body according to claim 6, wherein a plurality of oil return lines (14) are formed on one side, in contact with the shaft body (1), of the elastic dustproof lip ring (13), the oil return lines (14) are uniformly distributed in an inclined mode along the circumferential direction of the axis of the outer bone ring plate (12), when the shaft body (1) rotates clockwise around the axis, the oil return lines (14) incline anticlockwise around the axis direction of the shaft body (1), and one end, close to the inner diameter side wall of the elastic dustproof lip ring (13), of the oil return line (14) is not communicated.
  8. 8. A high-speed oil seal for forward and backward rotation of a shaft body according to claim 7, wherein an elastic connecting ring plate (15) is coaxially arranged on the outer bone ring plate (12), and the elastic connecting ring plate (15) compresses the forward elastic ring plate (5) on the elastic dustproof lip ring (13).

Description

High-speed oil seal for forward and reverse rotation of shaft body Technical Field The application relates to the technical field of structural sealing, in particular to a high-speed oil seal for forward and reverse rotation of a shaft body. Background The oil seal is widely applied to the fields of mechanical equipment, engines, hydraulic systems, petroleum, chemical industry, new energy and the like. The oil seal can form a seal between the rotating shaft and a static part (such as a shaft shell), isolate and seal lubricating oil in a preset space, prevent the oil from leaking, and ensure the safe and stable operation of equipment. The traditional oil seal structure can only ensure that the shaft body keeps sealing effect in the low-speed and forward rotation process, but in actual production operation, the rotating speed of the shaft body driven by new energy is far higher than that of a common shaft body, so that the common oil seal can still cause oil leakage even if the shaft body rotates in the forward direction, and the shaft body also has a short-time reversing process, such as a reversing process, at the moment, lubricating oil is easy to leak, and obvious defects exist. Disclosure of utility model In order to solve the problem that oil leakage easily occurs in the oil seal structure in the shaft body reversing process, the application provides a high-speed oil seal for shaft body reversing. The application provides a high-speed oil seal for forward and backward rotation of a shaft body, which adopts the following technical scheme: The utility model provides a high-speed oil blanket for axis body positive and negative rotation, includes elastic seal body, interior bone annular plate, reverse elastic annular plate and forward elastic annular plate, elastic seal body is used for forming sealedly with the axle housing between, elastic seal body sets up the outside of interior bone annular plate, reverse elastic annular plate with forward elastic annular plate all sets up the inboard of interior bone annular plate, reverse elastic annular plate with forward elastic annular plate all is used for the cover to establish on the axis body, reverse elastic annular plate forward elastic annular plate and axis body three between be formed with and deposit the oil pocket, when the axis body rotates clockwise around its axis, set up on the reverse elastic annular plate around the axis body on for clockwise reverse helical groove, set up on the forward elastic annular plate around the axis body on for anticlockwise forward helical groove, reverse helical groove with forward helical groove all laminate in the lateral wall of axis body. Through adopting above-mentioned technical scheme, at the in-process of oil jacket at the axis body, reverse elasticity annular slab and forward elasticity annular slab all take place deformation, simultaneously, forward helicla flute part of forward elasticity annular slab, reverse helicla flute part on reverse elasticity annular slab all wraps up and the butt is on the lateral wall of axis body, when the axis body rotates clockwise at a high speed around its axis, most fluid in the axle housing can be blocked by reverse elasticity annular slab, less fluid can diffuse to the oil pocket through the contact position of reverse elasticity annular slab with the axis body, because the axis body is usually placed in the level, so the fluid of diffusion can store earlier in the oil pocket, along with the extension of axis body live time, part fluid can diffuse to the contact surface department of forward elasticity annular slab with the axis body, at this moment, forward helicla flute on the forward elasticity annular slab can hinder fluid to continue to diffuse, and when the axis body rotates anticlockwise around its axis, at this moment, reverse helicla flute on the reverse elasticity annular slab can hinder the interior fluid of axle housing to the oil pocket to deposit the diffusion, so that the axis body rotates at a high speed, can keep sealed effect can take place between the sealed with the axis body, leak performance has been reduced. Optionally, a bending ring groove is formed in the forward elastic ring plate. Through adopting above-mentioned technical scheme, when the in-process that the axle body inserted forward elasticity annular slab, because the thickness of the forward elasticity annular slab of annular department of buckling is thinner, forward elasticity annular slab can take place to buckle and deformation smoothly, simultaneously, buckle and take place the forward elasticity annular slab of deformation can tightly cover on the lateral wall of axle body, through the resilience deformability of forward elasticity annular slab, make the contact position of axle body and forward elasticity annular slab can be sealed completely. Optionally, the forward spiral groove is not communicated with the inner diameter side wall of the forward elastic ring plate, the forward spira