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Pump bearing retainer

A technology for pump bearings and retainers, which is applied in the direction of bearing components, shafts, bearings, shafts, etc., can solve the problems of high risk of bearing cracking or shattering, ceramic surface damage, etc., to reduce the risk of cracking or shattering, and reduce damage. The effect of less risk and resistance

Active Publication Date: 2019-01-15
GRUNDFOS HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the risk of bearing cracking or shattering during press fit is very high
In particular, the ceramic surface of the bearing may be damaged during this process

Method used

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  • Pump bearing retainer
  • Pump bearing retainer
  • Pump bearing retainer

Examples

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Embodiment Construction

[0023] figure 1 A pump bearing holder 1 is shown comprising an inner section 3 , a middle section 5 and an outer section 7 . In this first embodiment, the pump bearing holder 1 is integrally and uniformly made of a single material, preferably sheet metal, and is rotationally symmetrical with respect to the longitudinal axis L. As shown in FIG. The pump bearing retainer 1 may be forged, milled, cut, repaired, deburred, molded, ground, rolled, 3D printed (additive manufacturing), and / or pressed into the hat shape shown. Pump bearing 13 (see figure 2 ) will be press-fitted into the pump bearing holder 1 from below (see hollow arrow). The relevant surfaces of the pump bearing holder 1 are thus here the bottom surface and the inner surface. It should be noted that the pump bearing holder 1 can have any spatial orientation, so words like "below", "above", "under", "above", "vertically The terms "straight", "horizontal", etc. are understood in the frame of reference fixed to the...

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Abstract

The present disclosure provides a pump bearing retainer (1) for a wet-running pump comprising a radially inner section (3) comprising an inner section surface (9) for a press-fit contact with an essentially cylinder-shaped radial outer surface (29) of a pump bearing (13), a radially outer section (7) comprising an annular or essentially conical-shaped outer section surface (17) with a cone angle ([theta]1) equal to or larger than 45 DEG, and an intermediate section (5) extending from the inner section (3) to the outer section (7), wherein the intermediate section (5) comprises an essentially conical-shaped intermediate section surface (15) with a cone angle ([theta]2) smaller than 45 DEG, wherein the longitudinal cross-section area A of the inner section (3) is smaller than the longitudinal cross-section area B of the intermediate section (5).

Description

technical field [0001] The present disclosure relates generally to pump bearing retainers, ie pump bearing retainers for wet-running pumps in general and for speed-controlled wet-running centrifugal pumps in particular. Background technique [0002] Wet-running centrifugal pumps generally include a rotor pot that separates a wet-running permanent magnet rotor from a dry-running stator. The rotor drives the impeller located in the pump housing. The rotor is usually mounted on a rotor shaft, which is rotatable in at least one radial bearing. Radial bearings are typically retained circumferentially and centered within the pump by a pump bearing retainer (sometimes called a bearing plate or disc). The pump bearing holder has a central opening into which the bearing is press-fitted in the axial direction during manufacture or assembly. To achieve a durable press fit, the axial pressing force is usually very high. Therefore, the risk of the bearing cracking or shattering durin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/046F04D29/02
CPCF04D29/026F04D29/046F16C2361/63F16C2361/65F16C33/76F04D29/047F04D29/126F04D29/628F16J15/004F04D1/00F04D29/0465F16C35/02F16C2360/44
Inventor 布里安·伦斯泰德·波尔森A·B·延森
Owner GRUNDFOS HLDG
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