High-temperature cantilever pump self-cooling bearing body

Abstract

A self-cooling bearing housing for a high-temperature cantilever pump is disclosed. The bearing housing has a connecting hole and two bearing caps, one for the pump end and one for the motor end. The connecting hole connects the bearing housing and the pump end bearing cap. An oil injection hole is provided on the upper part of both the pump end bearing cap and the bearing housing, and an oil return hole is provided on the lower part of both. The pump end bearing cap and the oil seal ring are integrally formed, and a clearance is provided between the pump end bearing cap and the shaft. This invention promotes oil convection through the connecting hole, and the lubricating oil circulation formed by the oil injection hole and the oil return hole can remove more than 60% of the frictional heat of the bearing. The integral structure of the bearing cap and the oil seal ring eliminates the gap of separate assembly, preventing any scraping or seizing. The air plug ensures that the lubricating oil is free from air resistance. The oil level window allows for real-time monitoring of the liquid level, reducing maintenance downtime. The filter screen in the oil return hole intercepts impurities, protecting the bearing from wear, and its stability is superior to existing similar products.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and in particular to a self-cooling bearing for a high-temperature cantilever pump. Background Technology

[0002] High-temperature cantilever pumps are widely used in high-temperature media transportation scenarios in industries such as petroleum, chemical, and metallurgy. As a core component, the bearing housing of these pumps needs to operate in high-temperature environments for extended periods. Current technologies for high-temperature cantilever pump bearing housings suffer from the following problems: Heat from the high-temperature medium is easily conducted to the bearing through the pump shaft and bearing housing, leading to excessively high bearing temperatures. This, in turn, causes thermal expansion and deformation of the bearing inner ring, affecting the bearing's normal operating accuracy and service life. The bearing cap and shaft are rigidly fitted; under high-temperature conditions, the difference in their thermal expansion coefficients can easily cause seizure. Furthermore, traditional bearing caps and oil seal rings are separate structures, resulting in poor sealing performance and a tendency for oil leakage. Poor circulation of lubricating oil within the bearing housing leads to low heat dissipation efficiency, further exacerbating the bearing overheating problem.

[0003] Therefore, it is essential to provide a self-cooling bearing housing for a high-temperature cantilever pump to address the shortcomings of existing technologies. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a self-cooling bearing body for a high-temperature cantilever pump. This invention promotes oil convection through connecting holes, and the lubricating oil circulation formed by the oil injection hole and the oil return hole can remove more than 60% of the frictional heat of the bearing. The integrated structure of the bearing cover and oil seal ring eliminates the gap of the split assembly, and there is no scraping or seizing phenomenon. The air plug ensures that the lubricating oil is free from air resistance. The oil level window can monitor the liquid level in real time, reducing maintenance downtime. The oil return hole filter can intercept impurities and protect the bearing from wear. Its stability is superior to existing similar products.

[0005] The above-mentioned objectives of this utility model are achieved through the following technical means.

[0006] A self-cooling bearing housing for a high-temperature cantilever pump is provided, comprising a bearing housing, a bearing and a bearing cap inside the bearing housing. The bearing housing is characterized by: a connecting hole on the bearing housing; a pump end bearing cap and a motor end bearing cap on the bearing housing, the connecting hole connecting the bearing housing and the pump end bearing cap; an oil injection hole on the upper part of the pump end bearing cap and the bearing housing; and an oil return hole on the lower part of the pump end bearing cap and the motor end bearing cap; the pump end bearing cap and the oil seal ring are integral, and a clearance is provided between the pump end bearing cap and the bearing.

[0007] Specifically, there are at least two connecting holes, which are symmetrically arranged on both sides of the bearing body.

[0008] Specifically, the bearing housing is equipped with a vent plug on the upper part and an oil level window on the side of the bearing housing.

[0009] Specifically, the bearing body is also provided with a cooling water inlet hole and a cooling water return hole, which are located on both sides of the bearing body and form a cooling water passage.

[0010] Specifically, the bearings include radial bearings and thrust bearings, which are arranged sequentially along the axial direction within the bearing housing.

[0011] This invention promotes oil convection through connecting holes, and the lubricating oil circulation formed by the oil injection hole and the oil return hole can remove more than 60% of the frictional heat of the bearing. The integrated structure of the bearing cover and oil seal ring eliminates the gap of the split assembly, and there is no scraping or seizing phenomenon. The air plug ensures that the lubricating oil is free from air resistance. The oil level window can monitor the liquid level in real time, reducing maintenance downtime. The oil return hole filter can intercept impurities and protect the bearing from wear. Its stability is superior to existing similar products. Attached Figure Description

[0012] The present invention will be further described with reference to the accompanying drawings, but the content of the drawings does not constitute any limitation on the present invention.

[0013] Figure 1 This is a schematic diagram of the overall structure of a self-cooling bearing body for a high-temperature cantilever pump according to this utility model.

[0014] from Figure 1 Including: 1. Bearing housing; 2. Bearings; 3. Bearing gland; 4. Connecting hole; 5. Pump end bearing gland; 6. Motor end bearing cover; 7. Oil filling hole; 8. Oil return hole; 9. Oil seal ring; 10. Air vent plug; 11. Oil level window; 12. Cooling water inlet hole; 13. Cooling water return hole; 14. Thrust bearing; 15. Radial bearing. Detailed Implementation

[0015] The present invention will be further described in conjunction with the following embodiments.

[0016] Example 1. like Figure 1As shown, a self-cooling bearing body for a high-temperature cantilever pump includes a bearing body 1. A radial bearing 15 and a thrust bearing 14 are arranged sequentially along the axial direction inside the bearing body 1. The radial bearing 15 is used to bear the radial load of the pump shaft, and the thrust bearing 14 is used to bear the axial thrust. The two work together to ensure the stable operation of the pump shaft. A pump end bearing cover 5 and a motor end bearing cover 6 are provided at both ends of the bearing body 1 to fix the bearing 2.

[0017] Two connecting holes 4 are symmetrically provided on both sides of the bearing body 1. The connecting holes 4 connect the internal space of the bearing body 1 with the internal space of the bearing cover 3, promoting the flow of oil between the two. The top of the pump end bearing cover 5 and the upper part of the bearing body 1 are provided with oil injection holes 7, through which lubricating oil can be injected into the bearing body 1 and the bearing cover 3. The bottom of the pump end bearing cover 5 and the bottom of the motor end bearing cover 6 are provided with oil return holes 8. After circulation, the lubricating oil can be discharged from the oil return holes 8, forming a complete lubricating oil circulation path and continuously carrying away the heat of the bearing 2.

[0018] The bearing cap 3 and the oil seal ring 9 are integrated into one structure, which enhances the sealing performance. There is a 0.2mm fit clearance between the bearing cap 3 and the shaft. This clearance can accommodate the thermal expansion of the shaft and the bearing cap 3 under high temperature, and prevent seizing.

[0019] The upper part of the bearing body 1 is provided with a vent plug 10. During installation, the vent plug 10 is opened, and lubricating oil is injected to the standard level shown in the oil level window 11. After the internal air is discharged, the vent plug 10 is closed to ensure that the lubricating oil fully fills the gap of the bearing 2. The oil level window 11 on the side of the bearing body 1 can be used to observe the liquid level in real time, so as to replenish the lubricating oil in time.

[0020] In addition, the bearing body 1 has a cooling water inlet hole 12 on the left side and a cooling water return hole 13 on the right side. Cooling water enters the cooling water passage inside the bearing body 1 through the inlet hole, absorbs heat, and flows out through the return hole, working in synergy with the circulation of lubricating oil.

[0021] This invention promotes oil convection through the connecting hole 4, and the lubricating oil circulation formed by the oil injection hole 7 and the oil return hole 8 can remove more than 60% of the frictional heat on the bearing 2; the integrated structure of the bearing cover 3 and the oil seal ring 9 eliminates the gap of the split assembly, and there is no scraping or seizing phenomenon; the air plug ensures that the lubricating oil is not filled with air resistance; the oil level window 11 can monitor the liquid level in real time, reducing maintenance downtime; the filter screen of the oil return hole 8 can intercept impurities and protect the bearing 2 from wear, and its stability is better than that of existing similar products.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A self-cooling bearing housing for a high-temperature cantilever pump, comprising a bearing housing, wherein the bearing housing is provided with a bearing and a bearing cap, characterized in that: The bearing body has a connecting hole, and the bearing body has a pump end bearing cover and a motor end bearing cover. The connecting hole connects the bearing body and the pump end bearing cover. The pump end bearing cover and the upper part of the bearing body have oil injection holes, and the lower part of the pump end bearing cover and the motor end bearing cover have oil return holes. The pump end bearing cover and the oil seal ring are integral parts, and there is a fitting clearance between the pump end bearing cover and the bearing.

2. The high-temperature cantilever pump self-cooling bearing body according to claim 1, characterized in that: The number of connecting holes is at least two, which are symmetrically arranged on both sides of the bearing body.

3. The high-temperature cantilever pump self-cooling bearing body according to claim 2, characterized in that: The bearing body is provided with a vent plug on the upper part and an oil level window on the side of the bearing body.

4. The high-temperature cantilever pump self-cooling bearing body according to claim 3, characterized in that: The bearing body is also provided with a cooling water inlet hole and a cooling water return hole, which are located on both sides of the bearing body and form a cooling water passage.

5. The high-temperature cantilever pump self-cooling bearing body according to claim 4, characterized in that: The bearing includes a radial bearing and a thrust bearing, which are arranged sequentially along the axial direction within the bearing body.

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