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CN-224214576-U - Bearing structure and pump equipment

CN224214576UCN 224214576 UCN224214576 UCN 224214576UCN-224214576-U

Abstract

The utility model provides a bearing structure and pump equipment, and relates to the technical field of bearings, wherein the bearing structure comprises a bearing and an oil inlet structure, the bearing comprises a first bearing bush and a second bearing bush which can be mutually buckled, and a shaft hole is formed after the first bearing bush and the second bearing bush are buckled; the oil inlet structure comprises a wear-resistant layer arranged on the inner wall of the shaft hole and a first oil inlet groove arranged on the wear-resistant layer, wherein the depth of the first oil inlet groove gradually increases from two ends to the middle part along the axial direction of the shaft hole, and the depth of the first oil inlet groove gradually decreases from top to bottom along the circumferential direction of the shaft hole. According to the utility model, the wear-resistant layer on the inner surface of the bearing bush is subjected to specific shape and depth scraping treatment, so that an optimized oil inlet structure is formed, the supply efficiency of lubricating oil is obviously improved, and the lubricating effect and stability of an oil film are enhanced, thereby effectively reducing the temperature rise of the bearing during working and ensuring the support stability of a rotor and the safety and reliability of equipment operation.

Inventors

  • GAO ANQI
  • PENG CHAO
  • XU HONGNAN

Assignees

  • 苏州苏尔寿泵业有限公司

Dates

Publication Date
20260508
Application Date
20250710

Claims (10)

  1. 1. A bearing structure, comprising: The bearing comprises a first bearing bush and a second bearing bush which can be buckled with each other, and the first bearing bush and the second bearing bush form a shaft hole after being buckled; The oil inlet structure comprises a wear-resistant layer arranged on the inner wall of the shaft hole and a first oil inlet groove arranged on the wear-resistant layer, wherein the depth of the first oil inlet groove gradually increases from two ends to the middle part along the axial direction of the shaft hole, and the depth of the first oil inlet groove gradually decreases from top to bottom along the circumferential direction of the shaft hole.
  2. 2. The bearing structure of claim 1, wherein the first bearing shell is disposed above the second bearing shell and the first oil feed groove is disposed on the second bearing shell.
  3. 3. The bearing structure of claim 2, wherein two of said first oil feed grooves are symmetrically disposed on said second bushing.
  4. 4. The bearing structure according to claim 2, wherein the first oil feed groove is spaced apart from the end portion of the second bush by a predetermined distance in the axial direction of the shaft hole, and/or wherein the arc length of the first oil feed groove is 20% to 30% of the arc length of the second bush in the circumferential direction of the shaft hole.
  5. 5. The bearing structure of claim 1, wherein the first oil feed groove has a depth in the range of 0.1mm to 0.5mm.
  6. 6. The bearing structure of claim 1, wherein the wear layer is a babbitt coating and the first oil feed groove is formed in the babbitt coating by scraping.
  7. 7. A bearing structure according to claim 1 or 3, wherein the oil feed structure further comprises a second oil feed groove provided on an inner wall of the shaft hole in an axial direction of the shaft hole, the second oil feed groove being provided in correspondence with the first oil feed groove, the second oil feed groove communicating with the corresponding first oil feed groove.
  8. 8. The bearing structure of claim 7, wherein the second oil feed groove comprises a first groove section provided on a first bearing shell and a second groove section provided on the second bearing shell, the first groove section and the second groove section abutting to form the second oil feed groove when the first bearing shell and the second bearing shell are in a buckled state.
  9. 9. The bearing structure of claim 7, wherein the bearing is provided with two mounting notches for passing the oil slinger.
  10. 10. A pump apparatus comprising a rotor, and a bearing arrangement as claimed in any one of claims 1 to 9.

Description

Bearing structure and pump equipment Technical Field The utility model relates to the technical field of bearings, in particular to a bearing structure and pump equipment. Background In the running process of the horizontal pump, the hydrodynamic radial sliding bearing is easy to cause the problem of overhigh temperature rise due to the high-speed running of the rotor, larger shaft diameter and the like, and the stability and the service life of the pump equipment are directly influenced. Currently, in order to solve the above problems, two methods are generally adopted in the art, namely, point-like or dot-like scraping is performed on the surface of the inner bore of the bearing to increase the oil storage capacity and improve the lubrication condition, and a rectangular oil inlet groove structure is added on the surface of the inner bore of the bearing to change the lubrication mode into forced lubrication, for example, an oil inlet hole is arranged to be communicated with an external oil station system. However, these prior arts have a certain limitation, although the dot or dot-shaped scraping can improve the lubrication effect to a certain extent, the effect of improving the temperature rise is not obvious for the rotor with high rotation speed and large shaft diameter due to the limited oil storage area, meanwhile, the technical requirement for operators is higher, the scraping consistency is difficult to be ensured, the design of the rectangular oil inlet groove is increased to possibly reduce the effective supporting area of the rotor, thereby influencing the stability of the rotor, even causing the phenomena of abnormal vibration and the like, and the forced lubrication mode requires additional configuration of an oil station system, thus not only increasing the equipment cost and maintenance difficulty, but also providing higher requirements for the field installation condition, and requiring the user to agree and confirm the use condition. Therefore, how to realize better lubrication effect and lower temperature rise by optimizing the surface structure design of the inner hole of the bearing on the premise of not changing the original lubrication mode and oil inlet condition, and ensure the support stability of the rotor and the safety and reliability of the operation of the equipment becomes the technical problem to be solved urgently at present. Disclosure of utility model In order to overcome the above-mentioned drawbacks of the prior art, the technical problem to be solved by the embodiments of the present utility model is to provide a bearing structure and a pump device, which are used for realizing a better lubrication effect and a lower temperature rise and guaranteeing the support stability of a rotor and the safety and reliability of the operation of the device. The above object of the present utility model can be achieved by the following technical solutions, and the present utility model provides a bearing structure, including: The bearing comprises a first bearing bush and a second bearing bush which can be buckled with each other, and the first bearing bush and the second bearing bush form a shaft hole after being buckled; The oil inlet structure comprises a wear-resistant layer arranged on the inner wall of the shaft hole and a first oil inlet groove arranged on the wear-resistant layer, wherein the depth of the first oil inlet groove gradually increases from two ends to the middle part along the axial direction of the shaft hole, and the depth of the first oil inlet groove gradually decreases from top to bottom along the circumferential direction of the shaft hole. In a preferred embodiment of the present utility model, the first bearing bush is disposed above the second bearing bush, and the first oil inlet groove is disposed on the second bearing bush. In a preferred embodiment of the present utility model, two first oil inlet grooves are symmetrically arranged on the second bearing bush. In a preferred embodiment of the present utility model, along an axial direction of the shaft hole, the first oil inlet groove is spaced from an end of the second bearing bush by a preset distance, and the preset distance is 5mm to 8mm. In a preferred embodiment of the present utility model, the arc length of the first oil inlet groove is 20% to 30% of the arc length of the second bearing bush along the circumferential direction of the shaft hole. In a preferred embodiment of the present utility model, the depth of the first oil inlet groove ranges from 0.1mm to 0.5mm. In a preferred embodiment of the present utility model, the wear-resistant layer is a babbitt metal coating, and the first oil inlet groove is formed on the babbitt metal coating by scraping. In a preferred embodiment of the present utility model, the oil inlet structure further includes a second oil inlet groove disposed on an inner wall of the shaft hole along an axial direction of the shaft hole, the second oil inlet groove is