Rolling bearing cooling mechanism for main speed reducer of cement grinding mill
By setting up a fuel injection device in the main reducer of cement mill, it directly aligns the balls in the rolling bearing for lubrication and cooling, the problem of traditional methods being poor when the rolling bearing is cooled is solved, and a more efficient cooling effect is achieved.
Patent Information
- Application Number
- CN202420048263.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-08
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-01-08
AI Technical Summary
The traditional lubricant cooling method has poor effect when cooling rolling bearings and cannot effectively reduce the high temperature of rolling bearings.
A rolling bearing cooling mechanism for cement grinding main reducer is designed. By setting up a fuel injection device in the main body of the reducer, the fuel injection device is connected to the main oil pipeline, and the fuel injection head is directly aligned with the balls in the rolling bearing for lubrication and cooling.
By increasing the amount of oil applied to the rolling bearing, the fixed-point cooling of the balls in the rolling bearing is achieved, which significantly improves the cooling effect of the rolling bearings in the reducer.
Smart Images
Figure CN222436988U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of cement mill main reducer, and in particular to a rolling bearing cooling mechanism for a cement mill main reducer. Background Art
[0002] At present, the cement mill main reducer is a kind of equipment used in cement production. It can reduce the speed of the motor to a speed suitable for the operation of the cement mill, while bearing large torque and impact load.
[0003] During the operation of the cement mill main reducer, the bearing parts inside the reducer need to be cooled down. Currently, lubricating oil is usually used to cool down the bearing parts.
[0004] The above-mentioned cooling by lubricating oil is effective in cooling sliding bearings, but when cooling rolling bearings, the rolling bearings are more likely to generate high temperatures due to the presence of balls in the rolling bearings, and the cooling effect of traditional lubricating oil cooling is poor. Utility Model Content
[0005] In order to improve the cooling effect on rolling bearings, the present application provides a rolling bearing cooling mechanism for a cement mill main reducer.
[0006] The present application provides a rolling bearing cooling mechanism for a cement mill main reducer, which adopts the following technical solution:
[0007] A rolling bearing cooling mechanism for a cement mill main reducer comprises a reducer body and a rolling bearing arranged in the reducer body, and also comprises an oil spray device fixedly arranged in the reducer body, wherein the oil spray device is connected to a main oil pipeline in the reducer body, and the oil spray device is used for performing fixed-point cooling on balls in the rolling bearing.
[0008] By adopting the above technical solution, an oil injection device is added to directly lubricate and cool the balls in the rolling bearing, which greatly increases the amount of oil applied to the rolling bearing and achieves fixed-point cooling of the balls in the rolling bearing, effectively improving the cooling effect of the rolling bearing in the reducer.
[0009] Preferably, the oil injection device includes an oil inlet pipe and an oil injection head, the oil inlet pipe is fixedly arranged in the reducer body, and one end of the oil inlet pipe is connected to the main oil pipe, and the other end of the oil inlet pipe is connected to the oil injection head, and the oil injection head faces the balls in the rolling bearing.
[0010] By adopting the above technical solution, an oil inlet pipeline is added to the main oil pipeline, and an oil spray head aimed at the rolling bearing balls is provided at one end of the oil inlet pipeline, so as to directly lubricate and cool the balls in the rolling bearing, thereby improving the cooling performance of the rolling bearing.
[0011] Preferably, a plurality of the oil injection devices are provided, and the oil injection devices are provided corresponding to the rolling bearings in the reducer body.
[0012] By adopting the above technical solution and arranging a plurality of oil injection devices, the overall cooling effect of the reducer body is improved.
[0013] Preferably, a cooling component is provided on the oil return pipeline in the reducer body, and the cooling component is used to conduct heat and cool the lubricating oil in the oil return pipeline.
[0014] By adopting the above technical solution, the lubricating oil in the return oil pipeline is effectively cooled, and then the lubricating oil entering the main oil pipeline is cooled.
[0015] Preferably, the cooling assembly includes a graphene cooling fin, and the graphene cooling fin is arranged to be attached to the outer wall of the oil return pipe.
[0016] By adopting the above technical solution, the graphene cooling sheet is an efficient and environmentally friendly heat dissipation product with the advantages of small size, high thermal conductivity, and easy installation. It is particularly suitable for occasions with limited space and high heat dissipation requirements. It is very suitable for cooling the return oil pipeline in the reducer body.
[0017] Preferably, a circulating oil tank is provided between the main oil pipeline in the reducer body and the return oil pipeline in the reducer body, and the lubricating oil in the return oil pipeline enters the main oil pipeline via the circulating oil tank. The circulating oil tank is located outside the reducer body, and a cooling mechanism is provided in the circulating oil tank, and the cooling mechanism is used to cool the lubricating oil in the circulating oil tank.
[0018] By adopting the above technical solution, a circulating oil tank and a cooling mechanism located in the circulating oil tank are added, which facilitates cooling of the lubricating oil in the reducer body, and indirectly improves the cooling effect in the reducer body.
[0019] Preferably, the cooling mechanism comprises a circulating water pipe and a refrigerator, the water inlet of the refrigerator is connected to the water outlet of the circulating water pipe, and the water outlet of the refrigerator is connected to the water inlet of the circulating water pipe;
[0020] The circulating water pipe is fixedly arranged in the circulating oil tank, and cooling water flows into the circulating water pipe.
[0021] By adopting the above technical solution, cooling water is used to cool the lubricating oil in the circulating oil tank, thereby further reducing the problem of lubricating oil entering the reducer body and improving the cooling effect in the reducer body.
[0022] Preferably, a three-way valve is provided at one end of the oil return pipeline in the reducer body, one outlet of the three-way valve is connected to the main oil pipeline, and the other outlet of the three-way valve is connected to the cooling mechanism.
[0023] By adopting the above technical solution, the three-way valve directly divides the main oil pipeline and the return oil pipeline into two circuits, that is, one is for the lubricating oil in the return oil pipeline to directly enter the main oil pipeline; the other is for the lubricating oil in the return oil pipeline to enter the main oil pipeline via the cooling mechanism. In this way, the three-way valve can be adjusted according to the temperature of the reducer body. When the temperature of the reducer body is high, the three-way valve is adjusted to allow the lubricating oil in the return oil pipeline to enter the main oil pipeline via the cooling mechanism; otherwise, the three-way valve is adjusted to allow the lubricating oil in the return oil pipeline to directly enter the main oil pipeline, which reduces the energy consumption of the device while ensuring the cooling of the rolling bearings in the reducer.
[0024] In summary, this application includes the following beneficial technical effects:
[0025] 1. By adding an oil spray device to directly lubricate and cool the balls in the rolling bearing, the amount of oil applied to the rolling bearing is greatly increased. At the same time, the fixed-point cooling of the balls in the rolling bearing is achieved, which effectively improves the cooling effect of the rolling bearing in the reducer. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is an axonometric diagram mainly showing the overall structure of the cooling mechanism of this embodiment;
[0027] Figure 2 This is a cross-sectional view mainly showing the main structure of the reducer in this embodiment;
[0028] Figure 3 for Figure 2 The enlarged schematic diagram shown in A mainly reflects the structure of the fuel injection device of this embodiment;
[0029] Figure 4 This is a cross-sectional view mainly showing the structure of the circulating oil tank in this embodiment.
[0030] Figure numerals: 1. reducer body; 2. rolling bearing; 3. oil injection device; 31. oil inlet pipe; 32. oil injection head; 4. main oil pipe; 5. oil return pipe; 6. graphene cooling plate; 7. circulating oil tank; 8. cooling mechanism; 81. circulating water pipe; 82. refrigerator; 9. three-way valve. DETAILED DESCRIPTION
[0031] The present application is further described in detail below in conjunction with the accompanying drawings.
[0032] The embodiment of the present application discloses a rolling bearing cooling mechanism for a cement mill main reducer.
[0033] Reference Figures 1 to 3 The rolling bearing cooling mechanism for the main reducer of the cement mill comprises a reducer body 1, wherein a return oil pipeline 5 and a main oil pipeline 4 are respectively arranged at the bottom and the top of the reducer body 1, a circulating pump is arranged on the return oil pipeline 5, a cooling component is arranged on the outer surface of the return oil pipeline 5 to cool the lubricating oil in the return oil pipeline 5, and a three-way valve 9 is arranged at one end of the return oil pipeline 5 located outside the reducer body 1. One outlet of the three-way valve 9 is connected to the main oil pipeline 4, and the other outlet of the three-way valve 9 is connected to the circulating oil tank 7. A cooling mechanism 8 is arranged in the circulating oil tank 7 to cool the lubricating oil in the circulating oil tank 7. An oil spraying device 3 is arranged in the reducer body 1, and the main oil pipeline 4 is used to supply oil to the oil spraying device 3, and the oil spraying device 3 sprays oil to lubricate and cool the balls of the rolling bearing 2.
[0034] Reference Figure 2 and Figure 3 The oil injection device 3 includes an oil inlet pipeline 31 and an oil injection head 32. The oil inlet pipeline 31 is fixedly arranged in the reducer body 1, and one end of the oil inlet pipeline 31 is connected to the main oil pipeline 4, thereby realizing the oil supply of the main oil pipeline 4 to the oil inlet pipeline 31, and the other end of the oil inlet pipeline 31 is connected to the oil injection head 32. The oil injection head 32 faces the ball of the rolling bearing 2, so that the oil injection head 32 can spray the lubricating oil in the oil inlet pipeline 31 onto the ball in the rolling bearing 2.
[0035] By adding an oil inlet pipeline 31 to the main oil pipeline 4 and providing an oil spray head 32 aimed at the balls of the rolling bearing 2 at one end of the oil inlet pipeline 31, direct lubrication and cooling of the balls in the rolling bearing 2 can be achieved, thereby improving the cooling performance of the rolling bearing 2, and effectively improving the cooling effect of the rolling bearing 2 in the reducer body 1, thereby effectively reducing the temperature of the reducer body 1.
[0036] In this embodiment, a plurality of oil injection devices 3 are provided, one corresponding to each rolling bearing 2 , thereby ensuring cooling of the balls in each rolling bearing 2 , thereby effectively reducing the overall temperature of the reducer body 1 .
[0037] Reference Figure 2 In this embodiment, the cooling component is a graphene cooling sheet 6, which is attached to the outer wall of the oil return pipe 5 and is used to conduct heat and cool the lubricating oil in the oil return pipe 5. The graphene cooling sheet 6 is an efficient and environmentally friendly heat dissipation product with the advantages of small size, high thermal conductivity, and easy installation. It is particularly suitable for occasions with limited space and high heat dissipation requirements. In addition, the graphene cooling sheet 6 also has excellent thermal stability and weather resistance, can work stably for a long time under harsh environmental conditions, and is very suitable for cooling the oil return pipe 5 in the reducer body 1.
[0038] Reference Figure 1 and Figure 4The cooling mechanism 8 includes a circulating water pipe 81 fixedly arranged inside the circulating oil tank 7, and a refrigerator 82 located on one side of the circulating oil tank 7. The water inlet of the refrigerator 82 is connected to the water outlet of the circulating water pipe 81, and the water outlet of the refrigerator 82 is connected to the water inlet of the circulating water pipe 81. The cooling water in the circulating water pipe 81 enters the refrigerator 82 through the water outlet of the circulating water pipe 81 for cooling, and flows back to the circulating water pipe 81 through the water inlet of the circulating water pipe 81 again, thereby cooling the lubricating oil in the circulating oil tank 7.
[0039] In this embodiment, a circulating oil tank 7 and a cooling mechanism 8 located in the circulating oil tank 7 are added to cool down the lubricating oil in the reducer body 1, which indirectly improves the cooling effect in the reducer body 1 and effectively improves the cooling efficiency of the reducer body 1. At the same time, cooling water is used to cool down the lubricating oil in the circulating oil tank 7, which further reduces the problem of lubricating oil entering the reducer body 1 and improves the cooling effect in the reducer body 1.
[0040] Reference Figure 1 , a three-way valve 9 is used to connect the return oil pipeline 5, the main oil pipeline 4 and the circulating oil tank 7, and the main oil pipeline 4 and the return oil pipeline 5 can be directly divided into two circuits through the three-way valve 9, that is, one is for the lubricating oil in the return oil pipeline 5 to directly enter the main oil pipeline 4; the other is for the lubricating oil in the return oil pipeline 5 to enter the main oil pipeline 4 via the cooling mechanism 8. In this way, the three-way valve 9 can be adjusted according to the temperature of the reducer body 1. When the temperature of the reducer body 1 is high, the three-way valve 9 is adjusted to allow the lubricating oil in the return oil pipeline 5 to enter the main oil pipeline 4 via the cooling mechanism 8; otherwise, the three-way valve 9 is adjusted to allow the lubricating oil in the return oil pipeline 5 to directly enter the main oil pipeline 4, which reduces the energy consumption of the device while ensuring the cooling of the rolling bearing 2 in the reducer.
[0041] The implementation principle of the rolling bearing cooling mechanism for the main reducer of a cement mill in the embodiment of the present application is: controlling the oil spray head 32 to lubricate and cool the balls in the rolling bearing 2, and detecting the temperature in the reducer body 1 at the same time;
[0042] When the temperature inside the reducer body 1 is high, adjust the three-way valve 9 so that the lubricating oil in the return oil pipeline 5 enters the main oil pipeline 4 through the cooling mechanism 8;
[0043] When the temperature in the reducer body 1 is normal, the three-way valve 9 is adjusted to allow the lubricating oil in the return oil pipeline 5 to directly enter the main oil pipeline 4 .
[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A rolling bearing cooling mechanism for a cement mill main reducer, comprising a reducer body (1) and a rolling bearing (2) arranged in the reducer body (1), characterized in that: It also includes an oil spray device (3) fixedly arranged in the reducer body (1), the oil spray device (3) being connected to a main oil pipeline (4) in the reducer body (1), and the oil spray device (3) being used to cool the balls in the rolling bearing (2) at a fixed point; The oil injection device (3) comprises an oil inlet pipeline (31) and an oil injection head (32); the oil inlet pipeline (31) is fixedly arranged in the reducer body (1); one end of the oil inlet pipeline (31) is connected to the main oil pipeline (4); the other end of the oil inlet pipeline (31) is connected to the oil injection head (32); the oil injection head (32) faces the balls in the rolling bearing (2).
2. The rolling bearing cooling mechanism for a cement mill main reducer according to claim 1 is characterized in that: A plurality of the oil injection devices (3) are provided, and the oil injection devices (3) are provided corresponding to the rolling bearings (2) in the reducer body (1).
3. The rolling bearing cooling mechanism for a cement mill main reducer according to claim 1, characterized in that: A cooling component is provided on the oil return pipe (5) in the reducer body (1), and the cooling component is used to conduct heat and cool the lubricating oil in the oil return pipe (5).
4. The rolling bearing cooling mechanism for the main reducer of a cement mill according to claim 3 is characterized in that: The cooling component comprises a graphene cooling fin (6), and the graphene cooling fin (6) is arranged to be attached to the outer wall of the oil return pipeline (5).
5. The rolling bearing cooling mechanism for the main reducer of a cement mill according to claim 3 is characterized in that: A circulating oil tank (7) is provided between the main oil pipeline (4) in the reducer body (1) and the return oil pipeline (5) in the reducer body (1), and the lubricating oil in the return oil pipeline (5) enters the main oil pipeline (4) via the circulating oil tank (7). The circulating oil tank (7) is located outside the reducer body (1). A cooling mechanism (8) is provided in the circulating oil tank (7), and the cooling mechanism (8) is used to cool the lubricating oil in the circulating oil tank (7).
6. The rolling bearing cooling mechanism for the main reducer of a cement mill according to claim 5, characterized in that: The cooling mechanism (8) comprises a circulating water pipe (81) and a refrigerator (82), wherein the water inlet of the refrigerator (82) is connected to the water outlet of the circulating water pipe (81), and the water outlet of the refrigerator (82) is connected to the water inlet of the circulating water pipe (81); The circulating water pipe (81) is fixedly arranged in the circulating oil tank (7), and cooling water flows into the circulating water pipe (81).
7. The rolling bearing cooling mechanism for the main reducer of a cement mill according to claim 5, characterized in that: A three-way valve (9) is provided at one end of the oil return pipeline (5) in the reducer body (1); one outlet of the three-way valve (9) is connected to the main oil pipeline (4); and the other outlet of the three-way valve (9) is connected to the cooling mechanism (8).