Automatic mechanical oil supplementing device for bearing chamber of rotating machine
By designing an automatic mechanical oil replenishing device for the transfer bearing chamber, automatic replenishment of lubricating oil is achieved by utilizing gravity and a limit column structure, thus solving the problem of lubricating oil leakage, ensuring safe operation of the equipment and reducing maintenance costs.
Patent Information
- Application Number
- CN202510840768.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-23
- Publication Date
- 2025-09-12
AI Technical Summary
In the prior art, the lubricating oil in the bearing chamber is prone to leakage, which leads to hidden dangers in the safe operation of the equipment, and the automatic oil replenishing device has not yet effectively solved this problem.
An automatic mechanical oil replenishing device for the bearing chamber of a transfer machine is designed, which includes a storage space, an inlet channel and a discharge channel. It uses gravity to achieve automatic replenishment of the lubricating medium. Combined with a limit column and a sealing plug structure, it ensures that the lubricating oil automatically flows into the bearing chamber when needed.
It realizes automatic replenishment of lubricating oil, ensures safe and stable operation of equipment, and reduces labor and time costs.
Smart Images
Figure CN120626937A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of bearing oil replenishment, in particular to an automatic mechanical oil replenishment device for a bearing chamber of a rotary machine. Background Art
[0002] Water pumps are important auxiliary equipment in thermal power plants. As rotating machinery, pumps must be supported by bearings, and bearings must have a corresponding lubrication system during use. Common lubricants in lubrication systems include three major categories: lubricating oil, grease, and solid lubricants. The most commonly used lubricant for pump bearings is lubricating oil. Lubricating oil is liquid. If the lubricating oil level, structure, and sealing form of the bearing housing are not designed properly or used improperly, lubricating oil leakage will occur, posing a hidden danger to the safe operation of the pump equipment. Oil leakage from the pump bearing housing is one of the most common failures of pump equipment. During factory testing and on-site installation and commissioning, some pump units may not experience oil leakage due to intermittent operation or short continuous operation time. However, after the equipment has been officially put into operation for a period of time, lubricating oil may appear on the lower edge of the bearing gland or the outer surface of the bearing housing. Most of the reasons are leakage caused by wear of the end cover oil seal. During the operation of the pump, the heat generated by the bearing is transferred to the lubricating oil, causing the temperature of the lubricating oil to rise. When the temperature of the lubricating oil rises, its volume increases, its viscosity decreases, and part of the lubricating oil changes from liquid to gas. Therefore, oil and gas mixing occurs in the cavity between the bearing cover and the rolling bearing; the temperature of the bearing chamber increases, causing the pressure inside the bearing chamber to be slightly greater than the atmospheric pressure. If the pressure difference cannot be eliminated in time, the pressure difference will cause oil and gas to overflow through the oil seal. The oil and gas will condense when encountering air, gradually generating oil droplets, which will gather at the bearing cover to form oil leakage.
[0003] Therefore, it is particularly important to realize automatic oil replenishment in the bearing chamber, which not only ensures the safe and stable operation of the equipment, but also reduces labor and time costs.
[0004] Therefore, an automatic mechanical oil replenishing device for a bearing chamber of a rotating machine is proposed. Summary of the Invention
[0005] Therefore, the technical problem to be solved by the present invention is: how to achieve automatic oil replenishment to the bearing chamber.
[0006] The above technical problems are solved by the following technical solutions: The present invention proposes an automatic mechanical oil replenishing device for a bearing chamber of a rotating machine, comprising:
[0007] a storage space for storing a lubricating medium;
[0008] an entry channel, which is provided at the upper end of the storage space;
[0009] a discharge channel provided at the lower end of the storage space;
[0010] The lubricating medium in the storage space can flow into the discharge channel under the action of gravity.
[0011] In a preferred embodiment of the automatic mechanical oil replenishing device for the bearing chamber of a rotating machine according to the present invention: the storage space includes an upper cover body, a cylindrical wall arranged at the lower end of the upper cover body, and a lower cover body arranged at the lower end of the cylindrical wall.
[0012] In a preferred embodiment of the automatic mechanical oil replenishing device for the rotating machine bearing chamber of the present invention: the discharge channel includes a lower end tube arranged on the lower cover body, and a nut threadedly connected to the outer wall of the lower end tube, and also includes a lower discharge hole arranged on the outer wall of the lower end tube.
[0013] In a preferred embodiment of the automatic mechanical oil replenishing device for the bearing chamber of a rotating machine of the present invention: the inlet channel includes an upper end tube provided on the upper cover body, and the inner wall of the upper end tube is provided with a tapered wall.
[0014] In a preferred embodiment of the automatic mechanical oil replenishing device for the bearing chamber of a rotating machine of the present invention: the surface of the cylinder wall is provided with scale marks, and the cylinder wall is made of a transparent material.
[0015] In a preferred embodiment of the automatic mechanical oil replenishing device for the bearing chamber of a rotating machine of the present invention: a limiting column is provided in the storage space, a ventilation channel is provided in the limiting column, and a leakage hole is provided on the outer wall of the limiting column.
[0016] In a preferred embodiment of the automatic mechanical oil replenishing device for the bearing chamber of a rotating machine of the present invention: a limiting column is provided in the storage space, a spring is provided on the limiting column, and a sealing plug is slidably provided on the limiting column.
[0017] In a preferred embodiment of the automatic mechanical oil replenishing device for the bearing chamber of a rotating machine according to the present invention: a ventilation channel is provided in the limiting column, and a leakage hole is provided on the outer wall of the limiting column;
[0018] The sealing plug is provided with a ventilation hole.
[0019] In a preferred embodiment of the automatic mechanical oil replenishing device for the bearing chamber of a rotating machine described in the present invention: a limiting groove is provided inside the sealing plug, a top column is provided at the end of the limiting column, and the outer wall of the top column is slidably connected to the inner wall of the limiting groove.
[0020] In a preferred embodiment of the automatic mechanical oil replenishing device for the bearing chamber of a rotating machine of the present invention: a sealing ring is provided at the end of the sealing plug, and a tapered surface is provided at the end of the sealing plug.
[0021] The beneficial effect of the present invention is that when the lubricating oil in the pre-pump bearing chamber is reduced, the lubricating oil in the storage space can automatically flow into the pre-pump bearing chamber, thereby realizing automatic replenishment of the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention, and are not intended to limit the present invention.
[0023] Figure 1 The overall structural diagram of the automatic mechanical oil replenishing device of the transfer bearing chamber is shown.
[0024] Figure 2 The figure shows the structure of the first embodiment of the automatic mechanical oil replenishing device for the bearing chamber of the rotating machine.
[0025] Figure 3 The figure shows the structure of the second embodiment of the automatic mechanical oil replenishing device for the bearing chamber of the rotating machine.
[0026] Figure 4 A reference diagram showing the operating status of the automatic mechanical oil replenishing device in the bearing chamber of the transfer machine.
[0027] Figure 5 An exploded schematic diagram of the internal structure of the automatic mechanical oil replenishing device in the transfer bearing chamber is shown.
[0028] In the figure: 1. Storage space; 11. Upper cover; 12. Cylinder wall; 13. Lower cover; 2. Entry channel; 21. Upper end tube; 22. Conical wall; 3. Discharge channel; 31. Lower end tube; 32. Nut; 33. Lower discharge hole; 4. Limiting column; 41. Ventilation channel; 42. Leakage hole; 43. Top column; 5. Spring; 6. Sealing plug; 61. Ventilation hole; 62. Limiting groove; 63. Sealing ring; 64. Conical surface. DETAILED DESCRIPTION
[0029] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.
[0030] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.
[0031] Example 1, refer to Figure 1 、 Figure 2 and Figure 4This embodiment provides an automatic mechanical oil replenishing device for a bearing chamber of a rotating machine, including a storage space 1 for storing a lubricating medium; in this embodiment, the lubricating medium is lubricating oil.
[0032] The entrance passage 2 is arranged at the upper end of the storage space 1; the entrance passage 2 is communicated with the storage space 1.
[0033] The discharge channel 3 is provided at the lower end of the storage space 1 ; the discharge channel 3 is communicated with the storage space 1 .
[0034] The lubricating medium in the storage space 1 can flow into the discharge channel 3 under the action of gravity.
[0035] When using, refer to Figure 4 The oil replenishing device is arranged on the pre-pump bearing chamber, and an oil drain port is provided at the bottom of the pre-pump bearing chamber. The pre-pump bearing chamber is connected to the discharge channel 3. Lubricating oil is stored in the pre-pump bearing chamber. When the lubricating oil in the pre-pump bearing chamber is reduced, the lubricating oil in the storage space 1 flows into the pre-pump bearing chamber under the action of gravity, thereby realizing automatic replenishment of lubricating oil.
[0036] The storage space 1 includes an upper cover 11, a cylindrical wall 12 arranged at the lower end of the upper cover 11, and a lower cover 13 arranged at the lower end of the cylindrical wall 12. The upper cover 11, the cylindrical wall 12 and the lower cover 13 constitute the storage space 1 for storing lubricating oil.
[0037] The discharge channel 3 includes a lower end tube 31 provided on the lower cover body 13, and a nut 32 threadedly connected to the outer wall of the lower end tube 31, and also includes a lower discharge hole 33 provided on the outer wall of the lower end tube 31. The outer wall of the lower end tube 31 is provided with a threaded groove for installing the oil replenishing device on the front pump bearing chamber, wherein the setting of the nut 32 can fix the installation of the oil replenishing device.
[0038] The inlet channel 2 includes an upper end tube 21 provided on the upper cover body 11 . The inner wall of the upper end tube 21 is provided with a tapered wall 22 . The provision of the tapered wall 22 facilitates guiding the oil to fall into the storage space 1 .
[0039] The surface of the cylinder wall 12 is provided with scale marks. The cylinder wall 12 is made of a transparent material. The setting of the scale marks makes it easy for maintenance personnel to check the oil amount inside the oil replenishing device.
[0040] A limiting column 4 is provided in the storage space 1 , a ventilation channel 41 is provided in the limiting column 4 , a leakage hole 42 is provided on the outer wall of the limiting column 4 , the ventilation channel 41 passes through the limiting column 4 , and the leakage hole 42 is provided around the bottom end of the limiting column 4 .
[0041] During use, the oil situation in the storage space 1 is observed through the cylinder wall 12. When there is a lack of oil, the oil can be added to the storage space 1 by entering the channel 2 to replenish the oil in the oil replenishing device. The setting of the ventilation channel 41 facilitates the discharge of gas during filling.
[0042] It should be noted that during normal use, the oil in the pre-pump bearing chamber is not filled, and the lower end of the discharge channel 3 needs to be inserted into the oil in the pre-pump bearing chamber. When the pre-pump bearing chamber is working, the amount of oil inside will decrease. When it decreases, the oil in the storage space 1 can be absorbed by negative pressure. When the oil does not decrease, the pressure in the pre-pump bearing chamber can keep the oil in the storage space 1.
[0043] Example 2, refer to Figure 1 、 Figure 3 、 Figure 5 This embodiment provides an automatic mechanical oil replenishing device for a transfer bearing chamber, including a storage space 1 for storing a lubricating medium; an inlet channel 2, which is arranged at the upper end of the storage space 1; and a discharge channel 3, which is arranged at the lower end of the storage space 1; the lubricating medium in the storage space 1 can flow into the discharge channel 3 under the action of gravity.
[0044] The storage space 1 includes an upper cover 11 , a cylindrical wall 12 disposed at the lower end of the upper cover 11 , and a lower cover 13 disposed at the lower end of the cylindrical wall 12 .
[0045] The discharge channel 3 includes a lower end tube 31 provided on the lower cover 13 , a nut 32 threadedly connected to the outer wall of the lower end tube 31 , and a lower discharge hole 33 provided on the outer wall of the lower end tube 31 .
[0046] The inlet channel 2 includes an upper end tube 21 provided on the upper cover 11 , and an inner wall of the upper end tube 21 is provided with a tapered wall 22 .
[0047] The surface of the cylinder wall 12 is provided with scale marks, and the cylinder wall 12 is made of transparent material.
[0048] What is different from the first embodiment is that a limiting column 4 is provided in the storage space 1 , a spring 5 is provided on the limiting column 4 , and a sealing plug 6 is slidably provided on the limiting column 4 .
[0049] The elastic force of the spring 5 can keep the sealing plug 6 in contact with the conical wall 22 to seal the upper end of the storage space 1 .
[0050] When it is necessary to add oil to the oil replenishing device, the sealing plug 6 is squeezed to slide down and compress the spring 5 to open the inlet channel 2, and the oil is added through the inlet channel 2.
[0051] When the oil replenishing device is working, the lower end tube 31 is installed on the pre-pump bearing chamber. Due to the elastic force of the spring 5, the sealing plug 6 fits on the conical wall 22 to form a seal, so that the top of the storage space 1 is sealed, and the lower end of the inlet channel 2 is connected to the pre-pump bearing chamber. The oil fills the storage space 1. Due to the action of pressure, the oil can now be stored in the storage space 1. When the liquid level in the pre-pump bearing chamber drops and the liquid decreases, the air pressure in the space above the oil level in the bearing chamber decreases. At this time, the oil in the storage space 1 is slowly sucked in, forming a slow filling. When the amount of oil missing is too much and the pressure change is too large, the sealing plug 6 can be caused to slide down by the pressure. After the sealing plug 6 slides down, the seal at the upper end of the storage space 1 is released, and the gas can enter the interior of the storage space 1, so that the oil is quickly filled.
[0052] An air exchange channel 41 is provided in the limiting column 4, and a leakage hole 42 is provided on the outer wall of the limiting column 4; an air exchange hole 61 is provided on the sealing plug 6. The setting of the air exchange channel 41 and the air exchange hole 61 facilitates the sliding of the sealing plug 6 on the outer wall of the limiting column 4, avoiding the oil or gas between the sealing plug 6 and the limiting column 4 causing an increase in the difficulty of sliding of the sealing plug 6. In addition, the oil can enter between the sealing plug 6 and the limiting column 4 through the air exchange channel 41 and the air exchange hole 61, playing a lubricating role in the connection between the two, and at the same time, the oil can be stored in the gap between the sealing plug 6 and the limiting column 4, avoiding waste of space.
[0053] A limiting groove 62 is provided inside the sealing plug 6, and a top column 43 is provided at the end of the limiting column 4. The outer wall of the top column 43 is slidably connected to the inner wall of the limiting groove 62. The setting of the limiting groove 62 and the top column 43 can increase the stability of the sealing plug 6 when sliding.
[0054] A sealing ring 63 is provided at the end of the sealing plug 6 , and a tapered surface 64 is provided at the end of the sealing plug 6 . The provision of the sealing ring 63 and the tapered surface 64 can improve the sealing effect of the sealing plug 6 .
[0055] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.
Claims
1. An automatic mechanical oil replenishing device for a rotating machine bearing chamber, characterized in that: include, a storage space (1) for storing a lubricating medium; an entry channel (2) provided at the upper end of the storage space (1); a discharge channel (3) provided at the lower end of the storage space (1); The lubricating medium in the storage space (1) can flow into the discharge channel (3) under the action of gravity.
2. The automatic mechanical oil replenishing device for the bearing chamber of a rotating machine according to claim 1, characterized in that: The storage space (1) comprises an upper cover (11), a cylinder wall (12) arranged at the lower end of the upper cover (11), and a lower cover (13) arranged at the lower end of the cylinder wall (12).
3. The automatic mechanical oil replenishing device for the bearing chamber of a rotating machine according to claim 2, characterized in that: The discharge channel (3) includes a lower end tube (31) provided on the lower cover (13), a nut (32) threadedly connected to the outer wall of the lower end tube (31), and a lower discharge hole (33) provided on the outer wall of the lower end tube (31).
4. The automatic mechanical oil replenishing device for the bearing chamber of a rotating machine according to claim 3, characterized in that: The inlet channel (2) comprises an upper end tube (21) provided on the upper cover body (11), and the inner wall of the upper end tube (21) is provided with a tapered wall (22).
5. The automatic mechanical oil replenishing device for the bearing chamber of a rotating machine according to claim 4, characterized in that: The surface of the cylinder wall (12) is provided with scale marks, and the cylinder wall (12) is made of a transparent material.
6. The automatic mechanical oil replenishing device for the bearing chamber of a rotating machine according to any one of claims 1 to 5, characterized in that: A limiting column (4) is provided in the storage space (1), a ventilation channel (41) is provided in the limiting column (4), and a liquid leakage hole (42) is provided on the outer wall of the limiting column (4).
7. The automatic mechanical oil replenishing device for the bearing chamber of a rotating machine according to any one of claims 1 to 5, characterized in that: A limiting column (4) is provided in the storage space (1), a spring (5) is provided on the limiting column (4), and a sealing plug (6) is slidably provided on the limiting column (4).
8. The automatic mechanical oil replenishing device for the bearing chamber of a rotating machine according to claim 7, characterized in that: A ventilation channel (41) is provided in the limiting column (4), and a liquid leakage hole (42) is provided on the outer wall of the limiting column (4); The sealing plug (6) is provided with a ventilation hole (61).
9. The automatic mechanical oil replenishing device for the bearing chamber of a rotating machine according to claim 8, characterized in that: A limiting groove (62) is provided inside the sealing plug (6), and a top column (43) is provided at the end of the limiting column (4). The outer wall of the top column (43) is slidably connected to the inner wall of the limiting groove (62).
10. The automatic mechanical oil replenishing device for the bearing chamber of a rotating machine according to claim 9, characterized in that: A sealing ring (63) is provided at the end of the sealing plug (6), and a tapered surface (64) is provided at the end of the sealing plug (6).