Double-bearing mounting structure of axially split pump
By using back-to-back mounted thrust bearings and adding washer and oil conductor holes in the middle-opening pump, the problems of uneven heat generation and lubrication of the bearing are solved, the heat dissipation effect and lubrication uniformity of the bearing are improved, and the service life is extended.
Patent Information
- Application Number
- CN202421112903.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-21
AI Technical Summary
In the steel industry, the central opening pump is prone to axial twitching, resulting in damage to the bearing and machine seal. The traditional dual bearing structure is prone to heat and uneven lubrication, which affects the service life.
Use back-to-back thrust bearings and add outer ring and inner ring washer to maintain a certain gap and communicate with the oil refueling hole through the oil conduction hole to ensure uniform flow of grease into the bearing.
The improved structure improves the heat dissipation effect and lubrication uniformity of the bearing and extends the service life.
Smart Images
Figure CN222277010U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of pumps, in particular to a double-bearing installation structure for a split-center pump. Background Art
[0002] The split case pump is a single-stage double-suction centrifugal pump with strong conveying force. It is widely used in the steel, municipal administration, water conservancy and other industries. The split case pump is used in the steel rolling industry. Due to the large flow adjustment range on site, it is easy to cause axial movement of the pump, which may cause damage to the pump bearing and mechanical seal. In this case, a double thrust bearing structure is generally used at one end of the pump.
[0003] The traditional double-bearing back-to-back structure can withstand the axial force of the water pump, but because the two bearings are installed in close proximity, the bearings are prone to heat up during actual use. In addition, with the traditional structure, the grease nozzle is on the side of the bearing, and the grease lubrication effect is uneven, which affects the service life of the bearing. Utility Model Content
[0004] The utility model aims at the deficiencies in the prior art and provides a double-bearing installation structure for a split-center pump.
[0005] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:
[0006] A double-bearing installation structure for a split-case pump comprises a bearing space composed of an end cover, a pressure cover and a bearing body connected to a pump shaft, wherein two sets of thrust bearings are arranged in the bearing space, the two sets of thrust bearings are installed back to back, a gasket is added between the two sets of thrust bearings, so that a certain gap is left between the double bearings, and an oiling hole is provided on the bearing body to communicate with the inside of the gap.
[0007] Further technology of the utility model:
[0008] Preferably, the gasket is divided into an outer ring gasket and an inner ring gasket.
[0009] Preferably, the outer ring gasket is provided with an oil guide hole, which is connected to the oil filling hole, and the grease flows evenly into the thrust bearings on both sides through the outer gasket oil guide hole to lubricate the thrust bearings.
[0010] The beneficial effects of the utility model are:
[0011] The utility model adds two washers to the double thrust bearings installed back to back, so that the two bearings have a certain gap, and the heat dissipation effect is better. At the same time, the oiling cup is located in the middle of the double bearings, and the bearings on both sides are lubricated evenly. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0013] Figure 1 It is a schematic diagram of the structure of the utility model;
[0014] The symbols in the figure are: 1 end cover, 2 pressure cover, 3 bearing body, 4 thrust bearing, 5 outer ring washer, 6 inner ring washer, 7 oil cup, 8 oil guide hole. DETAILED DESCRIPTION
[0015] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be further described in detail below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model but not all. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0016] like Figure 1 The present embodiment provides a double-bearing installation structure for a split-center pump, including a bearing space composed of an end cover 1, a pressure cover 2 and a bearing body 3 connected to a pump shaft, two sets of thrust bearings 4 are arranged in the bearing space, the two sets of thrust bearings 4 are installed back to back, and washers are added between the two sets of thrust bearings 4.
[0017] The washers are divided into an outer washer 5 and an inner washer 6, so that a certain gap is left between the two sets of thrust bearings 4, so that the bearings have a better heat dissipation effect. The inner and outer washers are evenly connected to the inner and outer ring structures of the bearings to ensure the stability of the double bearings. The bearing body 3 is provided with a refueling hole 7 connected to the inside of the gap. Grease is added from the refueling hole to lubricate the two sets of thrust bearings.
[0018] The outer ring gasket 5 is provided with an oil guide hole 8 , which is connected to the oil filling hole. The grease flows evenly into the thrust bearings 4 on both sides through the outer ring oil guide hole 8 to lubricate the thrust bearings 4 .
[0019] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.
Claims
1. A double bearing installation structure for a split pump, characterized in that: The invention comprises a bearing space composed of an end cover, a pressure cover and a bearing body connected to the pump shaft. Two sets of thrust bearings are arranged in the bearing space. The two sets of thrust bearings are installed back to back. Washers are added between the two sets of thrust bearings so that a certain gap is left between the two sets of thrust bearings. The bearing body is provided with a refueling hole connected to the inside of the gap.
2. According to the double bearing installation structure of a split pump as described in claim 1, it is characterized by: The gasket is divided into an outer ring gasket and an inner ring gasket.
3. A double bearing installation structure for a split case pump according to claim 2, characterized in that: The outer ring washer is provided with an oil guide hole, which is communicated with the oil filling hole. The grease flows evenly into the thrust bearings on both sides through the oil guide hole of the outer washer to lubricate the thrust bearings.