Rolling mill roller preheating device
By designing a rolling mill roll preheating device including a water tank, an electric heating pipe and a nozzle, the problem of temperature reduction caused by mounting the bearing seat after the roll preheating is solved, and uniform preheating and efficient production of the roll is achieved.
Patent Information
- Application Number
- CN202421460498.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-06-25
AI Technical Summary
After preheating the rollers of existing mills, bearing seats need to be installed to be used normally. Installing bearing seats after preheating will cause the roller temperature to decrease, and then the hot rolls need to be repeated, affecting production efficiency.
A rolling mill roll preheating device is designed, including a water tank, an electric heating pipe, a support table, a bearing seat, a working roller, a flow guide and a spray head. The emulsion is heated through the water tank and an electric heating pipe. The spray head sprays the heated emulsion onto the roll to achieve uniform preheating and maintains the roll temperature when installing the bearing seat.
The uniform preheating of the rolling rollers when the bearing seat is installed is achieved, the temperature reduction problem caused by the bearing seat installation after preheating is avoided, the production efficiency is improved, and the rolling rollers can be preheated before changing the rollers to reduce the waiting time.
Smart Images
Figure CN223011486U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cold rolling, in particular to a preheating device for rolling mill rolls. Background Art
[0002] Regarding the hot rolls of a rolling mill, the existing situation is generally that after the rolls are pushed into the rolling mill, emulsion with an appropriate temperature is sprayed to increase the temperature of the rolls. Generally, the preheating time is 30 - 45 minutes, which greatly slows down the production efficiency. Or the rolls are preheated separately. Without considering that in the actual production process, the bearing seats need to be installed on the rolls after preheating to be used normally. After preheating, when the bearing seats are installed, the temperature of the rolls will decrease, and the hot roll process needs to be repeated after being pushed into the rolling mill, which is not convenient to use. Content of the Utility Model
[0003] Aiming at the deficiencies of the prior art, the utility model provides a preheating device for rolling mill rolls, which solves the problem that the rolls need to be installed with bearing seats to be used normally after preheating in the prior art. After preheating, when the bearing seats are installed, the temperature of the rolls will decrease, and the hot roll process needs to be repeated after being pushed into the rolling mill.
[0004] To achieve the above object, the utility model is realized through the following technical solutions. The utility model provides a preheating device for rolling mill rolls, including a water tank and an electric heating tube. The electric heating tube is installed in the water tank. A pair of support platforms are respectively arranged on both sides of the water tank. A bearing seat is arranged on each of the two pairs of support platforms. A pair of working rolls are installed in the two pairs of bearing seats. A diversion pipe is installed on the water tank and located between the pair of working rolls. A number of spray heads are installed on the diversion pipe.
[0005] Preferably, a water pump and a pair of speed reducers are arranged outside the water tank. The water inlet end of the water pump is communicated with the water tank. A water pipe is installed at the water outlet end of the water pump. The water pipe is connected with the diversion pipe. A first gear, a second gear and a third gear are respectively rotatably installed in the pair of speed reducers. The second gear meshes with the first gear and the third gear. The first gear is connected with a motor. The working roll is installed in the third gear.
[0006] Preferably, a protective cover is installed at the upper end of the water tank. The diversion pipe and a number of spray heads are located below the protective cover.
[0007] Advantageous Effects
[0008] The utility model provides a preheating device for rolling mill rolls, which has the following advantageous effects:
[0009] This technical solution can preheat the roll more efficiently by combining a water tank with a water pump and a nozzle. Through the support table, motor, and reduction box, uniform preheating of the roll can be achieved when the bearing housing is installed. The preheating device can also preheat the roll in advance before the roll mill is about to replace the roll. After changing the roll, production can start directly without waiting. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 is a top view of the present utility model.
[0011] Figure 2 is a front view cross-sectional view of the present utility model.
[0012] Figure 3 is a schematic diagram of the internal structure of the reduction box of the present utility model.
[0013] In the figure: 1, water tank; 2, support table; 3, electric heating tube; 4, work roll; 5, diversion pipe; 6, nozzle; 7, water pump; 8, reduction box; 9, water pipe; 10, motor; 11, protective cover; 12, first gear; 13, second gear; 14, third gear. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0014] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0015] Please refer to Figures 1-3 , the present utility model provides a technical solution: a roll preheating device for a rolling mill, including a water tank 1 and an electric heating tube 3. The electric heating tube 3 is installed in the water tank 1. A pair of support tables 2 are respectively arranged on both sides of the water tank 1. Bearing housings are arranged on the two pairs of support tables 2. A pair of work rolls 4 are installed in the two pairs of bearing housings. A diversion pipe 5 is installed on the water tank 1 and between a pair of work rolls 4. A plurality of nozzles 6 are installed on the diversion pipe 5; the support table 2, the water tank 1, and the reduction box 8 are integrally welded by a connecting plate. Sealing measures are provided at the interfaces of the water pump 7 and the inlet of the electric heating tube 3. The protective cover 11 and both sides of the water tank 1 are provided with semi-circular openings according to the shaft heads of the work rolls 4, and rubber pads are provided at the openings. The water pump 7 is connected to the diversion pipe 5 through a soft water pipe 9; the two work rolls 4 are preheated simultaneously, and the temperatures are close, so that the phenomenon of roll bursting is not likely to occur during the rolling process. It is equipped with a support table 2 and a protective cover 11. When preheating the roll, it is not necessary to disassemble the bearing housing, avoiding the temperature drop caused by installing the bearing housing after preheating the roll. The emulsion can be recycled, reducing costs and saving resources.
[0016] Further, a water pump 7 and a pair of speed reducers 8 are provided outside the water tank 1. The water inlet end of the water pump 7 is communicated with the water tank 1. A water pipe 9 is installed at the water outlet end of the water pump 7. The water pipe 9 is connected to the diversion pipe 5. A first gear 12, a second gear 13 and a third gear 14 are respectively rotatably installed in a pair of the speed reducers 8. The second gear 13 meshes with the first gear 12 and the third gear 14. The first gear 12 is connected to a motor 10. The working roll 4 is installed in the third gear 14.
[0017] Further, a protective cover 11 is installed at the upper end of the water tank 1. The diversion pipe 5 and a plurality of spray heads 6 are located below the protective cover 11.
[0018] Those skilled in the art should connect the components in this case in sequence. For the specific connection and operation sequence, reference should be made to the following working principle. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process.
[0019] Embodiment: Place the working roll 4 together with the bearing seat on the support table 2. One end of the working roll 4 extends into the speed reducer 8. The motor 10 drives the working roll 4 to rotate through the first gear 12, the second gear 13 and the third gear 14. The water tank 1 is filled with emulsified liquid. The emulsified liquid is heated by the electric heating tube 3. The water pump 7 pumps the emulsified liquid into the diversion pipe 5. The emulsified liquid in the diversion pipe 5 is sprayed out from the spray heads 6 and drips onto the working roll 4. The motor 10 drives the working roll 4 to rotate so that it is evenly heated. The sprayed emulsified liquid returns to the water tank 1 to be heated continuously, realizing recycling.
[0020] Preheating process: Lift the roll with the bearing seat. After raising it to the same height as the upper surface of the bearing seat and the support table, translate the roll so that the long end of the roll is inserted into the speed reducer, place the bearing seat on the two support tables, fasten the protective cover, start the electric heating tube and the water pump, and start heating the roll.
[0021] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation. An element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.
[0022] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A rolling mill roll preheating device, comprising a water tank (1) and an electric heating tube (3), wherein the electric heating tube (3) is installed in the water tank (1), and a pair of support platforms (2) are respectively provided on both sides of the water tank (1), characterized in that: The two pairs of support platforms (2) are respectively provided with bearing seats, a pair of working rollers (4) are installed in the two pairs of bearing seats, a guide pipe (5) is installed on the water tank (1) and located between the pair of working rollers (4), and a plurality of nozzles (6) are installed on the guide pipe (5).
2. A rolling mill roll preheating device according to claim 1, characterized in that: A water pump (7) and a pair of reduction gear boxes (8) are provided outside the water tank (1); a water inlet end of the water pump (7) is connected to the water tank (1); a water pipe (9) is installed on the water outlet end of the water pump (7); the water pipe (9) is connected to the guide pipe (5); a first gear (12), a second gear (13) and a third gear (14) are rotatably installed in the pair of reduction gear boxes (8); the second gear (13) is meshed with the first gear (12) and the third gear (14); the first gear (12) is connected to a motor (10); and the working roller (4) is installed in the third gear (14).
3. A rolling mill roll preheating device according to claim 1, characterized in that: A protective cover (11) is installed at the upper end of the water tank (1), and the flow guide pipe (5) and a plurality of nozzles (6) are located below the protective cover (11).