Vertical pump bearing body structure

Abstract

The utility model discloses a vertical pump bearing body structure, including bearing body and its upper cover and lower cover, is equipped with the main shaft on the upper cover and lower cover, its characterized in that: the main shaft in bearing body is equipped with the oil throwing shaft sleeve, and the oil throwing shaft sleeve rotates synchronously with the main shaft, and the oil throwing shaft sleeve is equipped with the bearing between the bearing body, and the oil throwing shaft sleeve is equipped with a plurality of oil throwing holes, and the upper end of oil throwing hole is radial arrangement, and is located above the bearing, and the lower end of oil throwing hole is axial arrangement, and is connected with the oil pool of bearing body lower part, and the bearing body still is equipped with the oil return hole of connecting bearing upper side and oil pool, be equipped with the oil baffle on the lower cover, and the oil baffle is close to the main shaft, and the corresponding oil throwing shaft sleeve lower end is inserted into the oil baffle. The utility model discloses simple processing, convenient to use, and a little lubricating oil can satisfy the lubrication requirement of vertical pump upper bearing well, so that the pump can be more long -term safe stable operation, and is suitable for all vertical pump upper bearing body.

Description

Technical Field

[0001] This utility model relates to an improved invention of a vertical pump, and more particularly to an improved invention of a vertical pump bearing body structure. Background Technology

[0002] If the bearing housing above the vertical pump is lubricated with lubricating oil, insufficient lubrication may occur. If too much lubricating oil is added and it submerges the bearing, it will cause excessive loss of churning energy, resulting in abnormal heating of the bearing, which in turn leads to premature failure of the lubricating oil and greatly affects the service life of the bearing. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a vertical pump bearing body structure that can still meet the requirements of bearing lubrication and heat removal when filled with a small amount of lubricating oil.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: The vertical pump bearing body structure includes a bearing body and its upper and lower covers. A main shaft is mounted on the upper and lower covers. The main shaft inside the bearing body is equipped with an oil-throwing sleeve, which rotates synchronously with the main shaft. A bearing is fitted between the oil-throwing sleeve and the bearing body. The oil-throwing sleeve has several oil-throwing holes arranged in a ring. The upper end of each oil-throwing hole is radially arranged and located above the bearing. The lower end of each oil-throwing hole is axially arranged and connects to the oil sump at the bottom of the bearing body. The bearing body also has an oil return hole connecting the top of the bearing to the oil sump. The lower cover is equipped with an oil baffle, which is close to the main shaft. The lower end of the corresponding oil-throwing sleeve extends into the oil baffle.

[0005] The oil baffle includes a small steel pipe, a large steel pipe, and a base plate. The small steel pipe and the large steel pipe are coaxially and spaced apart on the base plate. The small steel pipe is sleeved on the main shaft. The base plate is sealed and connected to the lower cover. A ring of small holes is opened at the bottom of the large steel pipe.

[0006] The smaller steel pipe is taller than the larger steel pipe.

[0007] The small steel pipe is fully welded to the base plate, while the large steel pipe is spot welded to the base plate.

[0008] The lower end of the oil-slinging bushing is provided with a tapered constriction section, and a gap is left between the tapered constriction section and the main shaft. The lower port of the corresponding oil-slinging hole is located inside the tapered constriction section.

[0009] The inner ring of the bearing is mounted on the oil slinger bushing. The upper end of the inner ring is limited by a step on the oil slinger bushing, and the lower end of the inner ring is pressed by a stop washer and a round nut on the oil slinger bushing. The outer ring of the bearing is mounted on the bearing body. The lower end of the outer ring is limited by a step on the bearing body, and the upper end of the outer ring is pressed by a top cover.

[0010] The lower limit of the oil slinger bushing is formed by a step on the main shaft. The upper end of the oil slinger bushing is pressed and fixed by a pressure cap and its locking nut. The pressure cap is sleeved on the main shaft, and the locking nut is threadedly connected to the main shaft.

[0011] The oil-slinging hole of the oil-slinging bushing includes an axial through hole and a radial hole. The radial hole connects to the upper end of the axial through hole, and the top of the axial through hole is pressed by a pressure cap.

[0012] A magnetic oil seal is provided between the upper cover and the main shaft, and the magnetic oil seal and the upper cover are limited by a step.

[0013] The beneficial effect of this utility model is the improved structure of the vertical pump bearing body.

[0014] 1. The structure has high reliability: the rotation of the oil slinger bushing drives the lubricating oil to continuously lubricate the bearing, meet the lubrication requirements of the bearing, and remove the heat generated by the bearing;

[0015] 2. The structure is simple in design: easy to install, reliable in operation, requires no daily maintenance, has low manufacturing cost, and is suitable for large-scale applications;

[0016] 3. This structure is highly efficient: the tapered design below the oil slinger bushing reduces the amount of lubricating oil required and minimizes energy loss from oil churning.

[0017] 4. This structure requires a small amount of lubricating oil: only a portion of lubricating oil is needed below the bearing housing, without needing to submerge the bearing, to meet lubrication requirements;

[0018] 5. This structure has a wide range of applications: After the pump is running normally, the bearing housing continues to operate, meeting the needs of bearing lubrication and heat removal; this structure can be used for all vertical pumps to meet the usage requirements. Attached Figure Description

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a structural diagram of the oil-slinging bushing of this utility model.

[0022] Figure 3 This utility model Figure 2 BB cross-sectional view.

[0023] Figure 4 This is a structural diagram of the oil baffle of this utility model.

[0024] Figure 5 This utility model Figure 4 AA sectional view. Detailed Implementation

[0025] The accompanying drawings illustrate the structure of this utility model, and further details will be described below with reference to the drawings. In this embodiment, see the attached drawings. Figure 1-5 The vertical pump bearing structure includes a bearing body 1, an upper cover 2, and a lower cover 3. The bearing body 1 is vertically arranged, and the upper cover 2 and lower cover 3 are respectively fastened to the upper and lower ends of the bearing body 1 with screws. A sealing ring is provided between the lower cover 3 and the bearing body 1 to prevent leakage. A main shaft 4 passes through the upper cover 2 and lower cover 3. An oil slinger sleeve 5 is provided on the main shaft 4 inside the bearing body 1. A flat key 6 is provided between the oil slinger sleeve 5 and the main shaft 4 to realize synchronous rotation of the oil slinger sleeve 5 and the main shaft 4. A bearing is provided between the oil slinger sleeve 5 and the bearing body 1. 7. The oil slinger sleeve 5 is provided with several oil slinger holes 8. The upper port of the oil slinger hole 8 is arranged radially and located above the bearing 7. The lower port of the oil slinger hole 8 is arranged axially and connects to the oil sump 9 at the bottom of the bearing body 1. The bearing body 1 is also provided with an oil return hole 10 connecting the top of the bearing 7 and the oil sump 9. The lower cover 3 is provided with an oil baffle 11. The oil baffle 11 is close to the main shaft 4. The lower end of the corresponding oil slinger sleeve 5 extends into the oil baffle 11. The oil baffle 11 is used to prevent lubricating oil from leaking out through the space between the main shaft 4 and the lower cover 3, forming the inner wall of the bearing body 1. The bearing body 1 is also provided with an oil drain plug 12 and an oil level gauge 13. The oil drain plug 12 is used for the external discharge of lubricating oil, and the oil level gauge 13 is used to observe the lubricating oil level.

[0026] The working principle of this utility model is as follows: when the pump is running normally, the main shaft 4 rotates and drives the oil slinger sleeve 5 to rotate together. The lower port of the oil slinger hole 8 of the oil slinger sleeve 5 draws lubricating oil from the oil pool 9 and drives the lubricating oil to be thrown out from the radially arranged upper port to the upper end of the bearing 7, providing lubricating oil for the bearing 7. The excess lubricating oil flows back to the lower oil pool 9 through the oil return hole 10 of the bearing body 1.

[0027] For a further improved implementation method, see Appendix Figure 4-5The oil baffle 11 includes a small steel pipe 14, a large steel pipe 15, and a base plate 16. The small steel pipe 14 and the large steel pipe 15 are coaxially and spaced apart on the base plate 16. The small steel pipe 14 is sleeved on the main shaft 4. The base plate 16 is sealed to the lower cover 3. Specifically, the base plate 16 is fastened to the lower cover 3 with screws, and a sealing ring is pressed between the base plate 16 and the lower cover 3. A ring of small holes 17 is opened at the lower part of the large steel pipe 15, which is connected to the oil sump 9 of the bearing body 1 to maintain the lubricating oil level uniform with the cavity of the bearing body 1. Preferably, the small steel pipe 14 is higher than the large steel pipe 15 to ensure that no lubricating oil overflows the small steel pipe 14 during operation, thus preventing leakage. Preferably, the small steel pipe 14 and the base plate 16 are fully welded to prevent lubricating oil leakage, and the large steel pipe 15 and the base plate 16 are spot welded to reduce welding time and lower costs. In the above structure of the oil baffle 11, the small steel pipe 14 is equivalent to the inner wall of the bearing body 1, and the large steel pipe 15 is to prevent the lubricating oil in the oil baffle 11 from being stirred together with the lubricating oil in the oil sump 9, thereby reducing the energy loss from stirring.

[0028] As a further improved embodiment, the lower end of the oil slinger bushing 5 is provided with a conical constriction portion 25, and a gap is left between the conical constriction portion 25 and the main shaft 4. The lower port of the corresponding oil slinger hole 8 is located inside the conical constriction portion 25. The lower part of the oil slinger bushing adopts a conical design to reduce the required amount of lubricating oil and reduce the loss of oil churning energy.

[0029] As a further improved specific implementation, the inner ring of the bearing 7 is mounted on the oil slinger sleeve 5, the upper end of the inner ring of the bearing 7 is limited by the step on the oil slinger sleeve 5, and the lower end of the inner ring of the bearing 7 is pressed by the stop washer 18 and the round nut 19 on the oil slinger sleeve 5; the outer ring of the bearing 7 is mounted on the bearing body 1, the lower end of the outer ring of the bearing 7 is limited by the step on the bearing body 1, and the upper end of the outer ring of the bearing 7 is pressed by the upper cover 2.

[0030] As a further improved specific implementation, the oil slinger sleeve 5 is lowered by a step on the main shaft 4, and the upper end of the oil slinger sleeve 5 is pressed and fixed by the pressure cover 20 and its locking nut 21. The pressure cover 20 is sleeved on the main shaft 4, and the locking nut 21 is threadedly connected to the main shaft 4.

[0031] As a further improved specific implementation, the oil-slinging hole 8 of the oil-slinging bushing 5 includes an axial through hole 22 and a radial hole 23. The radial hole 23 connects to the upper end of the axial through hole 22, and the top of the axial through hole 22 is pressed by a pressure cap 20.

[0032] As a further improved specific implementation, a magnetic oil seal 24 is provided between the upper cover 2 and the main shaft 4. The magnetic oil seal 24 and the upper cover 2 are limited by a step, which facilitates installation and achieves leakage prevention.

[0033] In summary, the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A vertical pump bearing housing structure, comprising a bearing housing and its upper and lower covers, wherein a main shaft is mounted on the upper and lower covers, characterized in that: An oil slinger is provided on the main shaft inside the bearing housing. The oil slinger rotates synchronously with the main shaft. A bearing is provided between the oil slinger and the bearing housing. The oil slinger has several oil sling holes around its circumference. The upper port of the oil sling hole is arranged radially and located above the bearing. The lower port of the oil sling hole is arranged axially and connects to the oil sump at the bottom of the bearing housing. The bearing housing is also provided with an oil return hole connecting the top of the bearing to the oil sump. An oil baffle is provided on the lower cover. The oil baffle is close to the main shaft, and the lower end of the corresponding oil slinger extends into the oil baffle.

2. The vertical pump bearing housing structure as described in claim 1, characterized in that: The oil baffle includes a small steel pipe, a large steel pipe, and a base plate. The small steel pipe and the large steel pipe are coaxially and spaced apart on the base plate. The small steel pipe is sleeved on the main shaft. The base plate is sealed and connected to the lower cover. A ring of small holes is opened at the bottom of the large steel pipe.

3. The vertical pump bearing housing structure as described in claim 2, characterized in that: The smaller steel pipe is higher than the larger steel pipe.

4. The vertical pump bearing housing structure as described in claim 2, characterized in that: The small steel pipe is fully welded to the base plate, while the large steel pipe is spot welded to the base plate.

5. The vertical pump bearing housing structure as described in claim 1, characterized in that: The lower end of the oil-slinging bushing is provided with a tapered constriction section, and a gap is left between the tapered constriction section and the main shaft. The lower port of the corresponding oil-slinging hole is located inside the tapered constriction section.

6. The vertical pump bearing housing structure as described in claim 1, characterized in that: The inner ring of the bearing is mounted on the oil slinger bushing. The upper end of the inner ring is limited by a step on the oil slinger bushing, and the lower end of the inner ring is pressed by a stop washer and a round nut on the oil slinger bushing. The outer ring of the bearing is mounted on the bearing body. The lower end of the outer ring is limited by a step on the bearing body, and the upper end of the outer ring is pressed by a top cover.

7. The vertical pump bearing housing structure as described in claim 1, characterized in that: The lower limit of the oil slinger bushing is formed by a step on the main shaft. The upper end of the oil slinger bushing is pressed and fixed by a pressure cap and its locking nut. The pressure cap is sleeved on the main shaft, and the locking nut is threadedly connected to the main shaft.

8. The vertical pump bearing housing structure as described in claim 7, characterized in that: The oil-slinging hole of the oil-slinging bushing includes an axial through hole and a radial hole. The radial hole connects to the upper end of the axial through hole, and the top of the axial through hole is pressed by a pressure cap.

9. The vertical pump bearing housing structure as described in claim 1, characterized in that: A magnetic oil seal is provided between the upper cover and the main shaft, and the magnetic oil seal and the upper cover are limited by a step.

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