A bearing cooling structure

Abstract

The present invention provides a bearing cooling structure, relating to the field of bearing cooling technology. The structure includes a cooling water pipe, a water collection tank, and a drainage tank. The water collection tank is fixedly sleeved on the shaft by a set screw and rotates with the shaft. The drainage tank includes two semi-drainage tanks connected into one body, fixedly connected to an external frame, and does not rotate with the shaft. The two semi-drainage tanks surround the water collection tank and the shaft. The cooling water pipe is arranged above the drainage tank, with the water outlet facing the shaft. A drainage pipe is provided at the bottom of the drainage tank. The bearing cooling structure provided by the present invention uses a method of directly cooling the hot shaft from the outside, which can effectively reduce the temperature of the shaft, and thus effectively reduce the temperature of the bearing inner ring, thereby avoiding the failure of the lubricating oil and dry wear and damage to the bearing.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing cooling, and in particular to a bearing cooling structure. Background Art

[0002] Generally, bearing heating is caused by internal heat generated by rolling friction or by external heat. When the temperature reaches the dropping point of the grease, the lubricant will be quickly depleted, causing dry grinding of the bearing, which can lead to bearing failure or damage, resulting in downtime.

[0003] Different from general bearing heating, there is a kind of bearing heating caused by heat conduction through the shaft, such as Figure 1 As shown, the rotating blades operate continuously in a high-temperature zone for a long time, and their temperature is close to that of the high-temperature zone. The blades are driven by a keyed shaft, which increases the shaft temperature through heat conduction, and this in turn causes the bearing inner ring temperature to rise. Conventional bearing cooling methods are ineffective at reducing the bearing temperature because the bearing heat is generated by axial heat transfer from the bearing inner ring. External cooling methods can only reduce the bearing outer ring temperature, but have little effect on the internal rolling elements and inner ring, leading to lubricant failure and dry wear and damage to the bearing. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned prior art and provide a bearing cooling structure that adopts an external direct cooling method for the hot shaft to achieve the purpose of reducing the temperature at the bearing.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A bearing cooling structure comprises a cooling water pipe, a water collecting box and a drainage box; the water collecting box is an integrally welded structure, fixedly sleeved on the shaft by means of set screws, rotates with the shaft, and is sealed by a sealing ring; the upper end of the water collecting box is open and communicates with the internal space of the drainage box; the drainage box comprises two semi-drainage boxes connected into one, the interfaces are connected by bolts and sealed with a gasket; the two semi-drainage boxes embrace the water collecting box and the shaft, the top of the drainage box is higher than the upper opening of the water collecting box, and the bottom of the drainage box is lower than the bottom of the water collecting box; the drainage box is fixedly connected to the external frame and does not rotate with the shaft; the cooling water pipe is arranged above the drainage box, with the water outlet facing the shaft, so that cooling water is sprayed onto the shaft through the cooling water pipe; a drainage pipe is provided at the bottom of the drainage box.

[0007] The cross section of the semi-drainage tank is a semi-circular ring, and the two semi-drainage tanks are connected into one body to form a column with a circular ring cross section.

[0008] The drain pipe is installed on the side or bottom of the lower part of the drainage box, and the cooled water is discharged from the drain pipe on the side or bottom according to the on-site conditions.

[0009] The drainage pipe drains water directly into the ditch or re-enters the water circulation system through a return pump.

[0010] An electromagnetic regulating valve is installed on the cooling water pipe to control the cooling water supply.

[0011] The opening adjustment of the electromagnetic regulating valve is controlled by the feedback temperature signal of the infrared thermometer. The infrared thermometer is installed on the side wall of the opening of the external frame. Its installation form is welded or connected to the external frame according to the requirements of the infrared thermometer manufacturer.

[0012] The beneficial effect of adopting the above technical solution is that the bearing cooling structure provided by the present invention adopts the method of directly cooling the hot shaft from the outside, which can effectively reduce the temperature of the shaft, and then effectively reduce the temperature of the inner ring of the bearing, avoiding the failure of the lubricating oil and the dry grinding and damage of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of bearing heating caused by heat conduction from the shaft;

[0014] Figure 2 A schematic diagram of a bearing cooling structure provided by an embodiment of the present invention;

[0015] Figure 3 A schematic diagram of the water collecting tank structure provided by an embodiment of the present invention;

[0016] Figure 4 A schematic diagram of the fixing and sealing structure of the water collecting tank provided in an embodiment of the present invention;

[0017] Figure 5 A front view of the drainage box structure provided by an embodiment of the present invention;

[0018] Figure 6 A top view of the drainage box structure provided by an embodiment of the present invention;

[0019] Figure 7 A schematic diagram of the installation position of the drain pipe provided in an embodiment of the present invention.

[0020] In the figure: 1. Rotating blades; 2. Insulation material; 3. Shaft; 4. Bearing; 5. Water collecting tank; 6. Drain tank; 7. Cooling water pipe; 8. External frame; 9. Drain pipe; 10. Infrared thermometer; 11. Sealing ring; 12. Set screw; 13. Bolts, nuts and washers; 14. Sealing gasket. DETAILED DESCRIPTION

[0021] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0022] This embodiment provides a bearing cooling structure, which uses an external direct cooling method to reduce the temperature of the hot shaft to achieve the purpose of reducing the temperature at the bearing. Figure 2 As shown, it includes a cooling water pipe 7, a water collecting tank 5, and a drainage tank 6.

[0023] Cooling water pipe 7 is located above drain tank 8, with the water outlet directed toward shaft 3. Cooling water is sprayed onto the surface of shaft 3 through cooling water pipe 7 and then flows down along shaft 3 into water collection tank 5, thereby lowering the temperature of the inner ring of bearing 4 by reducing the temperature of shaft 3. A solenoid regulating valve is installed on cooling water pipe 7 to control the cooling water supply. The opening of the solenoid regulating valve is controlled by the feedback temperature signal from infrared thermometer 10, which is mounted on the side wall of the opening of external frame 8. Its installation method is welded or connected to external frame 8 according to the infrared thermometer manufacturer's requirements. Figure 2 The middle channel steel shape is the infrared thermometer bracket.

[0024] The structure of the water collecting tank 5 is as follows Figure 3 As shown, the water collecting box 5 is welded as a whole, fixed on the shaft 3 by the set screw 12, rotates with the shaft 3, and is sealed by the sealing ring 11. Figure 4 As shown in the figure, the upper end of the water collecting tank 5 is open and communicates with the interior space of the drainage tank 6. After the cooling water enters the water collecting tank 5, the liquid level gradually rises. When the water is full, it automatically overflows into the external drainage tank 6. New water continuously enters the water collecting tank 5, immersing the shaft 3 in water for sufficient heat transfer, cooling the rotating hot shaft, thereby significantly reducing the heat transfer of the axial bearing, achieving the purpose of cooling and protecting the bearing.

[0025] The drainage box 6 includes two half drainage boxes connected into one body, the interface is connected by bolts 13, and the sealing gasket 14 is sealed. Figure 5 and Figure 6 As shown. The cross section of the half drainage box is semicircular. The two half drainage boxes are connected to form a cylindrical body with a circular cross section, which surrounds the water collection box 5 and the shaft 3. The top of the drainage box 6 is higher than the upper opening of the water collection box 5, and the bottom of the drainage box 6 is lower than the bottom of the water collection box 5. The drainage box 6 is connected to the external frame 8 and does not rotate with the shaft 3. A drainage pipe 9 is provided on the side or bottom of the lower part of the drainage box 6. Figure 7 As shown, the cooling water is discharged from the side or bottom according to the on-site conditions, and the drainage method is to discharge it directly into the ditch or re-enter the water circulation system through a return pump.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope defined by the claims of the present invention.

Claims

1. A bearing cooling structure, characterized in that: The invention comprises a cooling water pipe (7), a water collecting box (5), and a drainage box (6); the water collecting box (5) is an integrally welded structure, fixedly sleeved on the shaft (3) by a set screw (12), rotates with the shaft (3), and is sealed by a sealing ring (11); the upper end of the water collecting box (5) is open and communicates with the internal space of the drainage box (6); the drainage box (6) comprises two semi-drainage boxes connected into one, the interface is connected by bolts (13), and the sealing gasket (14) is sealed. The two half drainage boxes surround the water collecting box (5) and the shaft (3), the top of the drainage box (6) is higher than the upper opening of the water collecting box (5), and the bottom of the drainage box (6) is lower than the bottom of the water collecting box (5); the drainage box (6) is fixedly connected to the external frame (8) and does not rotate with the shaft (3); the cooling water pipe (7) is arranged above the drainage box (6), and the water outlet is facing the shaft (3), so that the cooling water is sprayed onto the shaft (3) through the cooling water pipe (7); a drainage pipe (9) is provided at the bottom of the drainage box (6).

2. The bearing cooling structure according to claim 1, characterized in that: The cross section of the semi-drainage tank is semi-circular, and the two semi-drainage tanks are connected into one body to form a column with a circular cross section.

3. The bearing cooling structure according to claim 1, characterized in that: The drainage pipe (9) is arranged on the side or bottom of the lower part of the drainage box (6), and the cooled water is discharged from the drainage pipe (9) on the side or bottom according to the on-site conditions.

4. The bearing cooling structure according to claim 1, characterized in that: The drainage pipe (9) drains water directly into the ditch or re-enters the water circulation system through a return pump.

5. The bearing cooling structure according to claim 1, characterized in that: The cooling water pipe (7) is provided with an electromagnetic regulating valve for controlling the supply amount of cooling water.

6. The bearing cooling structure according to claim 5, characterized in that: The opening adjustment of the electromagnetic regulating valve is controlled by the feedback temperature signal of the infrared thermometer (10). The infrared thermometer (10) is installed on the side wall of the opening of the external frame (8). Its installation form is welded or connected to the external frame (8) according to the requirements of the infrared thermometer manufacturer.

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