Spraying and drip-proof device for back-up roll bearing of finishing mill

Abstract

The utility model discloses a spray and drip-proof device for a back-up roll bearing of a finishing mill, which comprises a back-up roll shaft, a first bearing seat, a second bearing seat, a first bearing seat sealing cover and a second bearing sealing cover, the other end of the supporting roller shaft is rotationally arranged in the second bearing seat through a bearing, the first bearing seat sealing cover is arranged on the side, facing one end of the supporting roller shaft, of the first bearing seat, and the second bearing seat sealing cover is arranged on the side, facing the other end of the supporting roller shaft, of the second bearing seat. And lubricating oil spraying mechanisms are arranged in the first bearing seat sealing cover and the second bearing seat sealing cover. According to the utility model, a lubricating oil soaking manner is changed into a lubricating oil spraying manner, and the use amount of high-viscosity lubricating oil in the bearing seat is reduced, so that the lubricating oil is prevented from dripping and entering rolling oil, the stability of the viscosity of the rolling oil in a finishing mill is maintained, and the surface cleanliness of a finished copper strip product is improved.

Description

Technical Field

[0001] The utility model relates to a spraying and anti-drip device, in particular to a spraying and anti-drip device for a support roller bearing of a finishing mill, belonging to the technical field of rolling mills. Background Art

[0002] During the rolling process of the finishing mill, the bearings at both ends of the support rollers are lubricated by immersion with high-viscosity No. 150 gear oil. However, in the long-term practical process, accompanied by the vibration of the machine train and long-term corrosion and wear, the aging and loosening of the seals are accelerated, causing the No. 150 high-viscosity gear oil used for lubricating the support roller bearings to drip into the rolling oil used for rolling lubricants, causing the viscosity of the rolling oil to increase and deposit on the surface of the copper strip during the copper strip rolling process. The increase in the viscosity of the rolling oil will increase the adhesion of the rolling oil on the surface of the copper strip, making it more difficult to clean the residual oil on the surface, resulting in poor surface cleanliness of the finished copper strip, which has a greater impact on the use of weldable copper strips, such as copper strips for radio frequency cables and photovoltaic welding strips.

[0003] At present, the control measures for the viscosity of rolling oil in finishing mills are to regularly test the viscosity of rolling oil. When it exceeds the process control range, a part of the high-viscosity rolling oil inside the rolling mill is extracted, and then low-viscosity new rolling oil is added to dilute it to reduce the viscosity of the rolling oil and stabilize the surface cleanliness of the copper strip for welding. At the same time, the high-viscosity oil pipelines used for lubrication of equipment and machine trains and the sealing gaskets of support roller bearings are regularly inspected and replaced. However, the above method only treats the symptoms and not the root cause, and the extracted high-viscosity rolling oil cannot be consumed and can only be sold as waste oil, resulting in increased production costs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a spray and anti-drip device for the bearing of the support roller of a finishing mill, so as to prevent the lubricating oil from dripping into the rolling oil.

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

[0006] A spray and anti-drip device for the bearing of a support roller of a finishing mill, comprising a support roller shaft, a first bearing seat, a second bearing seat, a first bearing seat sealing cover and a second bearing sealing cover, one end of the support roller shaft is rotatably arranged in the first bearing seat through a bearing, the other end of the support roller shaft is rotatably arranged in the second bearing seat through a bearing, the first bearing seat sealing cover is arranged on a side of the first bearing seat facing one end of the support roller shaft, the second bearing sealing cover is arranged on a side of the second bearing seat facing the other end of the support roller shaft, and a lubricating oil spraying mechanism is arranged in the first bearing seat sealing cover and the second bearing sealing cover.

[0007] Furthermore, the lubricating oil spray mechanism includes a spray pipe, an oil injection pipe, a Venturi nozzle and an oil return pipe. The spray pipe is arranged on one side of the bearing in the first bearing seat or the second bearing seat. A plurality of spray ports are opened on the spray pipe and the spray ports are directly facing the bearing. The oil inlet of the spray pipe is connected to one end of the oil injection pipe, and the other end of the oil injection pipe is connected to the liquid outlet of the Venturi nozzle. The pressurizing port of the Venturi nozzle penetrates the first bearing seat sealing cover or the second bearing seat sealing cover from the inside to the outside and is connected to the high pressure source. The liquid inlet of the Venturi nozzle is connected to one end of the oil return pipe, and an oil return hole is opened at the bottom of the first bearing seat and the second bearing seat. The other end of the oil return pipe is connected to the oil return hole of the first bearing seat or the second bearing seat.

[0008] Furthermore, the high pressure source is a blower.

[0009] Furthermore, the spray pipe is a circular pipe, and a plurality of spray openings are opened on a side of the spray pipe facing the bearing, and the plurality of spray openings are distributed at equal intervals along the circumference of the spray pipe.

[0010] Furthermore, the spray port is a bell-shaped port with a gradually increasing diameter.

[0011] Furthermore, the oil return hole is arranged on a side of the bottom of the first bearing seat and the second bearing seat away from the spray pipe, and the oil return hole adopts a conical structure.

[0012] Furthermore, the inner diameter of the spray pipe matches the outer diameter of the support roller, the spray pipe is sleeved on the outside of the support roller, the outer diameter of the spray pipe matches the inner diameter of the first bearing seat or the second bearing seat, and the outer side of the spray pipe rests on the inner wall of the first bearing seat or the second bearing seat.

[0013] Furthermore, a sealing ring is provided on a side of the first bearing seat or the second bearing seat away from the spray pipe.

[0014] Compared with the prior art, the utility model has the following advantages and effects: the utility model provides a spray and anti-drip device for the support roller bearing of the finishing mill, which changes the lubrication method of the support roller bearing of the finishing mill from the method of infiltrating lubricating oil to the method of spraying lubricating oil, thereby reducing the amount of high-viscosity lubricating oil in the bearing seat, thereby preventing the lubricating oil from dripping into the rolling oil, maintaining the stability of the viscosity of the rolling oil in the finishing mill, and improving the surface cleanliness of the finished copper strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of a spray and anti-drip device for a support roller bearing of a finishing mill.

[0016] Figure 2 The utility model is a partial schematic diagram of a spray and anti-drip device for a support roller bearing of a finishing mill.

[0017] Figure 3 It is a schematic diagram of the spray pipeline of the utility model. DETAILED DESCRIPTION

[0018] In order to elaborate on the technical scheme adopted by the utility model to achieve the predetermined technical purpose, the technical scheme in the embodiment of the utility model will be clearly and completely described in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a partial embodiment of the utility model, not all of the embodiments, and the technical means or technical features in the embodiment of the utility model can be replaced without paying creative labor. The utility model will be described in detail with reference to the drawings and in combination with the embodiments.

[0019] like Figure 1 and Figure 2 As shown, the utility model is a spray and anti-drip device for the support roller bearing of a finishing mill, comprising a support roller shaft 1, a first bearing seat 2, a second bearing seat 3, a first bearing seat sealing cover 4 and a second bearing sealing cover 5. One end of the support roller shaft 1 is rotatably arranged in the first bearing seat 2 through a bearing 6, and the other end of the support roller shaft 1 is rotatably arranged in the second bearing seat 3 through a bearing 6. The first bearing seat sealing cover 4 is arranged on a side of the first bearing seat 2 facing one end of the support roller shaft 1, and the second bearing sealing cover 5 is arranged on a side of the second bearing seat 3 facing the other end of the support roller shaft 1. Lubricating oil spraying mechanisms are arranged in the first bearing seat sealing cover 4 and the second bearing sealing cover 5.

[0020] The lubricating oil spraying mechanism comprises a spraying pipe 7, an oil spraying pipe 8, a venturi nozzle 9 and an oil return pipe 10. The spraying pipe 7 is arranged on one side of the bearing 6 in the first bearing seat 2 or the second bearing seat 3. Figure 3 As shown, the spray pipe 7 is provided with a plurality of spray ports and the spray port 11 is directly facing the bearing 6, the oil inlet of the spray pipe 7 is connected to one end of the oil injection pipe 8, the other end of the oil injection pipe 8 is connected to the liquid outlet of the venturi nozzle 9, the pressurizing port of the venturi nozzle 9 penetrates the first bearing seat sealing cover 4 or the second bearing seat sealing cover 5 from the inside to the outside and is connected to the high pressure source, the liquid inlet of the venturi nozzle 9 is connected to one end of the oil return pipe 10, the bottom of the first bearing seat 2 and the second bearing seat 3 are provided with an oil return hole, and the other end of the oil return pipe 10 is connected to the oil return hole of the first bearing seat 2 or the second bearing seat 3. Among them, the high pressure source is a blower.

[0021] The spray port 11 of the spray pipe 7 sprays the lubricating oil directly on the bearing 6, so that the bearing 6 is continuously infiltrated by the lubricating oil spray. Compared with the traditional method of immersing the bearing in the diameter lubricating oil, the possibility of dripping to the outside is greatly reduced due to the small amount of lubricating oil in the bearing seat. The lubricating oil dripping from the bearing 6 is collected at the bottom of the bearing seat, collected through the oil return hole and enters the venturi nozzle 9 along the oil return pipe 10. The venturi nozzle 9 provides high-pressure air through the blower to form a negative pressure at the liquid inlet of the venturi nozzle, so that the lubricating oil at the bottom of the bearing seat can be quickly sucked out. At the same time, the high-pressure air sprays the sucked lubricating oil out of the liquid outlet at a high speed, and after being evenly distributed in the spray pipe 7, it is evenly sprayed on the bearing 6 from the spray port 11, forming a complete spray cycle.

[0022] The spray pipe 7 is a circular pipe, and a plurality of spray ports 11 are provided on the side of the spray pipe 7 facing the bearing 6, and the plurality of spray ports 11 are evenly spaced along the circumference of the spray pipe 7. The spray ports 11 are bell-shaped with gradually increasing diameters, and the bell-shaped design can increase the spray range of the lubricating oil and improve the spray effect on the bearing 6.

[0023] The oil return hole is arranged at a side of the bottom of the first bearing seat 2 and the second bearing seat 3 away from the spray pipe 7, and the oil return hole adopts a conical structure.

[0024] The inner diameter of the spray pipe 7 matches the outer diameter of the support roller shaft 1, and the spray pipe 7 is sleeved on the outer side of the support roller shaft 1. The outer diameter of the spray pipe 7 matches the inner diameter of the first bearing seat 2 or the second bearing seat 3, and the outer side of the spray pipe 7 abuts against the inner wall of the first bearing seat 2 or the second bearing seat 3.

[0025] A sealing ring 12 is provided on the side of the first bearing seat 2 or the second bearing seat 3 away from the spray pipe.

[0026] The utility model discloses a spraying and anti-drip device for the bearing of the support roller of the finishing mill, which changes the lubrication mode of the bearing of the support roller of the finishing mill from the mode of infiltrating lubricating oil to the mode of spraying lubricating oil, reduces the amount of high-viscosity lubricating oil in the bearing seat, thereby preventing the lubricating oil from dripping into the rolling oil, maintains the stability of the viscosity of the rolling oil in the finishing mill, and improves the surface cleanliness of the finished copper strip.

[0027] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement of the above embodiments made according to the technical essence of the present invention, within the spirit and principles of the present invention, without departing from the content of the technical solution of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims

1. A spray and anti-drip device for the support roller bearing of a finishing mill, characterized in that: It comprises a supporting roller shaft, a first bearing seat, a second bearing seat, a first bearing seat sealing cover and a second bearing sealing cover. One end of the supporting roller shaft is rotatably arranged in the first bearing seat through a bearing, and the other end of the supporting roller shaft is rotatably arranged in the second bearing seat through a bearing. The first bearing seat sealing cover is arranged on a side of the first bearing seat facing one end of the supporting roller shaft, and the second bearing sealing cover is arranged on a side of the second bearing seat facing the other end of the supporting roller shaft. Lubricating oil spraying mechanisms are arranged in the first bearing seat sealing cover and the second bearing sealing cover.

2. A spray and anti-drip device for the support roller bearing of a finishing mill according to claim 1, characterized in that: The lubricating oil spray mechanism comprises a spray pipe, an oil injection pipe, a venturi nozzle and an oil return pipe. The spray pipe is arranged on one side of the bearing in the first bearing seat or the second bearing seat. A plurality of spray ports are opened on the spray pipe and the spray ports are directly opposite to the bearing. The oil inlet of the spray pipe is connected to one end of the oil injection pipe, and the other end of the oil injection pipe is connected to the liquid outlet of the venturi nozzle. The pressurizing port of the venturi nozzle penetrates the first bearing seat sealing cover or the second bearing seat sealing cover from the inside to the outside and is connected to the high pressure source. The liquid inlet of the venturi nozzle is connected to one end of the oil return pipe. Oil return holes are opened at the bottoms of the first bearing seat and the second bearing seat, and the other end of the oil return pipe is connected to the oil return hole of the first bearing seat or the second bearing seat.

3. A spray and anti-drip device for the support roller bearing of a finishing mill according to claim 2, characterized in that: The high pressure source is a blower.

4. A spray and anti-drip device for the support roll bearing of a finishing mill according to claim 2, characterized in that: The spray pipe is a circular pipe, and a plurality of spray openings are opened on a side of the spray pipe facing the bearing. The plurality of spray openings are distributed at equal intervals along the circumference of the spray pipe.

5. A spray and anti-drip device for the support roller bearing of a finishing mill according to claim 4, characterized in that: The spray port is a bell mouth with a gradually increasing diameter.

6. A spray and anti-drip device for the support roll bearing of a finishing mill according to claim 2, characterized in that: The oil return hole is arranged on a side of the bottom of the first bearing seat and the second bearing seat away from the spray pipe, and the oil return hole adopts a conical structure.

7. A spray and anti-drip device for the support roll bearing of a finishing mill according to claim 2, characterized in that: The inner diameter of the spray pipe matches the outer diameter of the support roller, the spray pipe is sleeved on the outside of the support roller, the outer diameter of the spray pipe matches the inner diameter of the first bearing seat or the second bearing seat, and the outer side of the spray pipe rests on the inner wall of the first bearing seat or the second bearing seat.

8. A spray and anti-drip device for the support roll bearing of a finishing mill according to claim 1, characterized in that: A sealing ring is provided on the side of the first bearing seat or the second bearing seat away from the spray pipe.

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