Heavy load bearing thin oil lubrication circulation structure for vertical pump

Abstract

The utility model discloses a heavy load bearing thin oil lubrication circulation structure for vertical pump, including bearing box, the oil storage room has in bearing box, install upper bearing body on bearing box, be provided with transmission sleeve in bearing box and upper bearing body, install deep groove ball bearing between transmission sleeve and upper bearing body, install upper bearing gland on upper bearing body, install spherical roller bearing between transmission sleeve and bearing box, install the shaft in transmission sleeve, install the oil separation sleeve between the shaft and bearing box, the oil separation sleeve has riser portion, set up lower thread structure and upper thread structure on transmission sleeve inner side wall, set up oil injection hole on transmission sleeve, set up pump oil chamber on transmission sleeve inner side wall, and pump oil chamber is located between lower thread structure and upper thread structure. The utility model adopts screw pump power, provides continuous stable thin oil lubrication for bearing, reduces bearing heat output, prolongs bearing service life, cancels radial oil hole, and the size specification of bearing is reduced.

Description

Technical Field

[0001] This utility model relates to the field of heavy-duty bearing lubrication technology, and in particular to a thin oil lubrication circulation structure for heavy-duty bearings used in vertical pumps. Background Technology

[0002] Lubrication plays a crucial role in bearing use. For rolling bearings in vertical pumps that are lubricated with thin oil, the bearing components need to withstand the axial and radial forces of the entire pump unit. The quality of lubricant circulation directly affects the bearing's temperature rise, lifespan, and the overall operation of the pump unit.

[0003] The heavy-duty bearing components for vertical pumps include spherical roller bearings that bear axial forces and deep groove ball bearings that bear radial forces. The lower spherical roller bearings are lubricated by immersion in lubricating oil, while the upper deep groove ball bearings are not in contact with the lubricating oil when stationary. During operation, the lubricating oil needs to be raised to the bearing for lubrication. Traditional circulation methods rely on centrifugal force to propel the lubricating oil up a slope, but the lifting effect is not ideal, resulting in high bearing temperature rise. Insufficient lubrication can lead to bearing damage, affecting the safe and stable operation of the pump. Furthermore, the traditional structure has oil inlets in the radial direction of the bearing sleeve, increasing the radial dimension of the bearing mounting location, thus increasing the bearing's size and energy factor (n·d) during operation. m The increased heat generation in the bearing is one of the reasons for its high temperature rise. Reducing bearing heat generation, extending bearing life, and providing a continuous, stable, and reliable bearing lubricating oil circulation method are essential to ensure the safe and reliable operation of the vertical pump. Utility Model Content

[0004] The purpose of this invention is to provide a thin oil lubrication circulation structure for heavy-duty bearings in vertical pumps, which solves the problems of poor lubrication circulation and insufficient lubrication in bearings in the prior art, leading to increased bearing temperature and even damage.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a thin oil lubrication circulation structure for a heavy-duty bearing of a vertical pump, comprising:

[0006] The bearing housing includes an oil reservoir, an upper bearing housing mounted on it, a transmission sleeve disposed within the bearing housing and the upper bearing housing, a deep groove ball bearing installed between the transmission sleeve and the upper bearing housing, an upper bearing cap mounted on the upper bearing housing, a spherical roller bearing installed between the transmission sleeve and the bearing housing, a shaft installed within the transmission sleeve, an oil separator sleeve installed between the shaft and the bearing housing, the oil separator sleeve having a riser section located between the transmission sleeve and the shaft, a lower thread structure and an upper thread structure formed on the inner sidewall of the transmission sleeve, an oil injection hole formed on the transmission sleeve, an oil pump chamber formed on the inner sidewall of the transmission sleeve located between the lower thread structure and the upper thread structure, the transmission sleeve and the shaft being fixedly connected by a lock nut, and a cooling water jacket mounted outside the bearing housing.

[0007] The present invention discloses the following technical effects:

[0008] The heavy-duty bearing thin oil lubrication circulation structure for vertical pumps provided by this utility model adopts a spiral pump to deliver power, providing continuous and stable thin oil lubrication for the bearing, reducing bearing heat generation, and extending bearing service life.

[0009] The thin oil lubrication circulation structure for heavy-duty bearings in vertical pumps provided by this utility model eliminates the oil delivery hole in the radial direction of the bearing sleeve in the traditional structure, reduces the radial dimension of the bearing mounting location, thereby reducing the size of the bearing and lowering the energy factor n·d during bearing operation. m This value further reduces the heat generation and operating temperature of the bearing, thereby improving the operational reliability of the pump. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the thin oil lubrication circulation structure of the heavy-duty bearing for the vertical pump of this utility model.

[0012] The components include: 1. Bearing housing; 2. Cooling water jacket; 3. Upper bearing housing; 4. Upper bearing; 5. Locking nut; 6. Deep groove ball bearing; 7. Transmission sleeve; 7.1 Lower thread structure; 7.2 Upper thread structure; 7.3 Pump oil chamber; 7.4 Oil injection hole; 8. Spherical roller bearing; 9. Oil separator sleeve assembly; 9.1 Riser section. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Reference Figure 1 This utility model provides a thin oil lubrication circulation structure for heavy-duty bearings of vertical pumps, comprising:

[0016] The bearing housing 1 has an oil reservoir inside. An upper bearing body 3 is installed on the bearing housing 1. A transmission sleeve 7 is provided inside the bearing housing 1 and the upper bearing body 3. A deep groove ball bearing 6 is installed between the transmission sleeve 7 and the upper bearing body 3. An upper bearing cap 4 is installed on the upper bearing body 3. A spherical roller bearing 8 is installed between the transmission sleeve 7 and the bearing housing 1. A shaft is installed inside the transmission sleeve 7. An oil separator sleeve 9 is installed between the shaft and the bearing housing 1. The oil separator sleeve 9 has a riser part 9.1, which is located between the transmission sleeve 7 and the shaft. A lower thread structure 7.1 and an upper thread structure 7.2 are opened on the inner side wall of the transmission sleeve 7. An oil injection hole 7.4 is opened on the transmission sleeve 7. An oil pumping chamber 7.3 is opened on the inner side wall of the transmission sleeve 7, which is located between the lower thread structure 7.1 and the upper thread structure 7.2. The transmission sleeve 7 and the shaft are fixedly connected by a lock nut 5. A cooling water jacket 2 is installed outside the bearing housing 1.

[0017] In actual use, after injecting an appropriate amount of lubricating oil into the bearing housing 1 as required, the shaft drives the transmission sleeve 7 to rotate after startup. The lower inner cavity of the transmission sleeve 7 is designed with two sets of opposite threaded structures, the lower threaded structure 7.1 and the upper threaded structure 7.2. The two sets of threads rotate in opposite directions, forming a working gap with the riser part 9.1 of the oil separator sleeve 9. The lower threaded structure 7.1 is immersed in the oil sump. When rotating, it generates a spiral pumping power to lift the lubricating oil to the pump oil chamber 7.3 and deliver it to the deep groove ball bearing 6 for lubrication through the oil spray hole. The upper opposite threaded structure 7.2 plays a spiral sealing role to prevent the lubricating oil from overflowing from the upper part of the oil separator sleeve 9. The circulation path is: oil sump in the oil storage chamber - lower threaded structure of the transmission sleeve - pump oil chamber - oil spray hole - bearing - return oil sump.

[0018] 1. The heavy-duty bearing thin oil lubrication circulation structure for vertical pumps provided by this utility model adopts a spiral pump to deliver power, providing continuous and stable thin oil lubrication for the bearing, reducing bearing heat generation, and extending bearing service life.

[0019] 2. The thin oil lubrication circulation structure for heavy-duty bearings in vertical pumps provided by this utility model eliminates the oil delivery hole in the radial direction of the bearing sleeve in the traditional structure, reduces the radial dimension of the bearing mounting location, thereby reducing the size of the bearing and lowering the energy factor n·d during bearing operation. m This value further reduces the heat generation and operating temperature of the bearing, thereby improving the operational reliability of the pump.

[0020] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A thin oil lubrication circulation structure for heavy-duty bearings of vertical pumps, characterized in that, include: A bearing housing (1) has an oil reservoir inside. An upper bearing body (3) is installed on the bearing housing (1). A transmission sleeve (7) is provided inside the bearing housing (1) and the upper bearing body (3). A deep groove ball bearing (6) is installed between the transmission sleeve (7) and the upper bearing body (3). An upper bearing cap (4) is installed on the upper bearing body (3). A spherical roller bearing (8) is installed between the transmission sleeve (7) and the bearing housing (1). A shaft is installed inside the transmission sleeve (7). An oil separator sleeve (9) is installed between the shaft and the bearing housing (1). The oil separator sleeve (9) has... The transmission sleeve (7) has a riser section (9.1) located between the transmission sleeve (7) and the shaft. The inner wall of the transmission sleeve (7) has a lower thread structure (7.1) and an upper thread structure (7.2). The transmission sleeve (7) has an oil injection hole (7.4). The inner wall of the transmission sleeve (7) has a pump oil chamber (7.3) located between the lower thread structure (7.1) and the upper thread structure (7.2). The transmission sleeve (7) and the shaft are fixedly connected by a lock nut (5). A cooling water jacket (2) is installed outside the bearing housing (1).

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