Working roll cooling device

Abstract

The utility model relates to the technical field of cooling devices, and discloses a working roll cooling device which comprises a base plane, more than one cooling station, a spray cooling system, a water collecting system, an electric control operation system and an electric control operation system, each cooling station is composed of two roll brackets coaxially and fixedly arranged on the base plane, and one or two working rolls are arranged on each cooling station; the spray cooling systems are fixedly arranged on the two sides of the cooling station; the water collecting system is arranged on the base surface in a mutually communicated manner and is used for collecting and discharging cooling water on the base surface; and the electric control operation system is electrically connected with the spray cooling system. The problems that in the prior art, a cooling pond is complex in structure and inconvenient to operate, waste is caused due to the low water source utilization rate, only one single-specification working roller can be cooled due to space limitation, and applicability is poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling devices, in particular to a working roll cooling device. Background Art

[0002] The roll is an important component of the rolling mill. During long-term steel rolling on the rolling line of the hot-rolled plate working roll, a large amount of residual heat accumulates inside the roll. It is necessary to conduct sufficient and uniform cooling to eliminate the residual heat generated due to rolling. Therefore, reasonably cooling the rolled-off roll to ensure the uniformity of the surface temperature of the roll is an important measure to ensure the accuracy of the roll during the grinding of the hot-rolled working roll, and it is also an important factor to ensure the shape of the hot-rolled plate.

[0003] Currently, in the production line of the hot-rolled plate mill, the cooling device for the rolled-off working roll mostly adopts the top-down spray cooling. For example, CN205701857U discloses a working roll cooling device. This device places the working roll in a cooling pool with an arc-shaped groove, and by setting side spray pipes, top spray pipes, middle spray pipes, and bottom spray pipes in the cooling pool, and setting nozzles on the spray pipes to spray water on the working roll for cooling. The structure is complex and the operation is inconvenient. Moreover, due to space limitations, it can only cool a single working roll of a certain specification and cannot be used to cool the working roll of the finishing mill with a bearing seat, so the applicability is not good. At the same time, since the cooling water sprays from multiple directions at the bottom, side, middle, and bottom, the water sprayed from the upper part will flow to the bottom of the working roll under the influence of gravity, resulting in more cooling water sprayed on the bottom of the working roll due to the spraying in the middle and bottom parts. This causes uneven cooling effects on the upper and lower parts of the working roll, and the cooling water sprayed in the middle and bottom is not fully utilized, resulting in waste of water resources. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a working roll cooling device, which overcomes the problems in the prior art such as complex structure, inconvenient operation, low water source utilization rate resulting in waste, and poor applicability due to space limitations, which can only cool a single specification working roll.

[0005] In order to achieve the above purpose, the present application adopts the following technical solutions.

[0006] The utility model is a working roll cooling device, including:

[0007] Base surface,

[0008] One or more cooling stations, which are composed of two roll brackets coaxially fixed on the base surface and are used to support the working roll. One or two working rolls are provided on the cooling station;

[0009] Spray cooling system, fixed on both sides of the cooling station, and spraying and cooling the working roll mounted on the roll bracket;

[0010] A water collection system, which is arranged on the base surface in a mutually penetrating manner and is used for collecting and discharging cooling water on the base surface;

[0011] An electric control operating system, which is electrically connected to the spray cooling system.

[0012] The further improvement lies in: the work roll cooling device, which is characterized in that: the spray cooling system includes: a main water pipe, a main water pipe, a connecting branch pipe, a spray pipe and a nozzle. One end of the main water pipe is connected to a water source, and the other end is connected to the main water pipe. The spray pipe is communicated with the main water pipe through the connecting branch pipe. The spray pipe is symmetrically arranged on both sides of the work roll through a support frame. The two spray pipes are symmetrically provided with nozzles inclined upward at a spraying angle, and the sprayed cooling water meets above the central axis of the work roll to form a water curtain for water curtain spray cooling of the work roll.

[0013] The further improvement lies in: two spray pipes are arranged in parallel up and down on the support frame, and the spraying angles of the nozzles arranged on the two spray pipes are different, and the spraying angle is set to 40-70 degrees.

[0014] The further improvement lies in: the main water pipe is horizontally arranged in the installation groove at one end of the work roll, the bottom surface of the installation groove is provided with a slope inclined towards the water collection system, and the installation groove is provided with a matching cover plate.

[0015] The further improvement lies in: electric control valves are respectively arranged between the main water pipe and the main water pipe and between the spray pipe and the main water pipe, and the electric control valves are electrically connected to the electric control operating system.

[0016] The further improvement lies in: a filter is also arranged between the main water pipe and the main water pipe.

[0017] The further improvement lies in: the water collection system includes: a middle water collection tank, a water collection connecting tank and a water collection pool. The middle water collection tank is horizontally arranged on the base surface between the roll brackets. The water collection connecting tank is arranged on one side of the base surface, one end is connected to the middle water collection tank, and the other end is communicated with the water collection pool.

[0018] The further improvement lies in: the middle water collection tank and the water collection connecting tank are both provided with a water collection slope in the direction of the water collection pool.

[0019] The further improvement lies in: the base surface is provided with a water collection slope inclined towards the middle water collection tank.

[0020] Compared with the prior art, the beneficial effects of the present utility model are:

[0021] The structure of this application is simple and the operation is convenient. It is applicable to the cooling of work rolls of different specifications. For the work roll of the finishing mill with a bearing housing, the work roll can be directly placed on the roll bracket, and the electric control operating system is used to control the on-off of the electric control valve connected to the spray cooling system to spray-cool the work roll. It is also applicable to the cooling of work rolls of other specifications, with good applicability.

[0022] By symmetrically arranging nozzles with the same spraying angle on the base surfaces on both sides of the cooling station, the cooling water with the same spraying angle sprayed by the nozzles on both sides of the work roll converges above the central axis of the work roll to form a water curtain to cool the work roll, so that the cooling water evenly falls on the surface of the work roll. During the flow process of the water on the roll surface, the entire roll surface can be covered, comprehensively cooling and reducing the temperature of the work roll surface. The cooling is uniform and sufficient, and at the same time, the sprayed water is fully utilized, avoiding unnecessary waste.

[0023] By arranging a water collection system that penetrates each other on the base surface, the cooling water on the base surface is collected and discharged in time, fully keeping the site clean and providing guarantee for the reuse of the collected water. Description of the Drawings

[0024] Figure 1 It is a schematic top view structure diagram of the present utility model.

[0025] Figure 2 It is a schematic A-A sectional structure diagram of the present utility model.

[0026] Figure 3 It is a schematic B-B sectional structure diagram of the present utility model.

[0027] Figure 4 It is a schematic C-C sectional structure diagram of the present utility model.

[0028] Figure 5 It is a schematic J-J sectional structure diagram of the present utility model.

[0029] Reference Signs in the Drawings:

[0030] Base surface 1, roll bracket 2, spray cooling system 3, main water pipe 31, main water pipe 32, connecting branch pipe 33, spray pipe 34, nozzle 35, support frame 36, installation groove 37, water collection system 4, middle water collection tank 41, water collection connecting tank 42, water collection pool 43, electric control valve 5, filter 6, electric control operating system 7, work roll 8. Detailed Embodiment

[0031] In order to deepen the understanding of the present utility model, the present utility model will be further described in detail below with reference to the drawings. This embodiment is only used to explain the present utility model and does not constitute a limitation to the protection scope of the present utility model.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the referred combination or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0033] The following further describes the present utility model with reference to the drawings and in conjunction with embodiments.

[0034] Figures 1-5 As shown, there is a work roll cooling device, which includes: a base surface 1, on which there is one cooling station or two or more mutually parallel cooling stations for placing work rolls 8. Each cooling station places one work roll 8 or two work rolls 8. Both ends of the work roll 8 are supported by roll brackets 2 coaxially fixed on the base surface 1; on both sides of the cooling station on the base surface 1, a spray cooling system 3 is symmetrically arranged to spray-cool the work roll 8; the spray cooling system 3 includes: a main water pipe 31, a main water pipe 32, connecting branch pipes 33, spray pipes 34 and nozzles 35. One end of the main water pipe 31 is connected to a water source, and the other end is connected to the main water pipe 32. The spray pipes 34 are communicated with the main water pipe 32 through the connecting branch pipes 33. The spray pipes 34 are symmetrically arranged on both sides of the work roll 8 through a support frame 36. The two spray pipes 34 are provided with nozzles 35 that are inclined upward at a spraying angle at intervals and symmetrically, and the sprayed cooling water converges above the central axis of the work roll 8 to form a water curtain to spray-cool the work roll 8 with a water curtain; between the main water pipe 31 and the main water pipe 32, and between the spray pipes 34 and the main water pipe 32, there are also electric control valves 5 electrically connected to the electric control operating system 7 respectively to control the water spray amount, water spray time and automatic switch operation of the main water pipe 31 and each spray pipe; the electric control valve 5 can be set as an electric control valve with manual adjustment and switching; a water collection system 4, which is mutually communicated and arranged on the base surface 1 for collecting and discharging the cooling water on the base surface 1.

[0035] The cooling device has a simple structure, is easy to operate, and is applicable to the cooling of work rolls of different specifications. Simply place the work roll 8 directly on the roll bracket 2 without size specifications. The finishing work roll with a bearing housing can be directly placed on the roll bracket 2. A nylon backing plate is provided on the roll bracket 2 to prevent hard contact between the bearing housing and the roll bracket 2. A guiding and positioning device can also be provided on the roll bracket 2 to facilitate the stable placement of work rolls of different specifications. The electric control operating system 7 is used to control the opening and closing of the electric control valve 5 connected to the spray cooling system 3 to spray-cool the work roll 8. By symmetrically arranging nozzles 35 with the same spraying angle on the base surfaces 1 on both sides of the cooling station, the cooling water sprayed by the nozzles 35 on both sides of the work roll 8 at the same spraying angle converges above the central axis of the work roll 8 to form a water curtain to cool the work roll 8, enabling the cooling water to evenly fall on the surface of the work roll. During the flow of water on the roll surface, the entire roll surface can be covered, comprehensively cooling and lowering the temperature of the work roll surface, with uniform and sufficient cooling, and making full use of the sprayed water. By providing a water collection system 4 that penetrates each other on the base surface 1, the cooling water on the base surface 1 can be collected and discharged in a timely manner.

[0036] An optional implementation mode is as Figure 2 shown: Two spray pipes 34 are arranged in parallel up and down on the support frame 36. The spraying angles of the nozzles 35 provided on the two spray pipes 34 are inclined upward at different angles. The spraying angle of the nozzles 35 on the lower spray pipe 34 ensures the spray cooling of the work roll placed on the bottom layer of the roll bracket 2, and the spraying angle of the nozzles 35 on the upper spray pipe 34 ensures the spray cooling of the work roll placed on the upper layer of the roll bracket 2. One work roll can be placed at the cooling station and sprayed with the lower spray pipe, or the work rolls can be stacked in pairs and sprayed with both the upper and lower pipes simultaneously. The upper and lower nozzles can be used simultaneously or separately. Multiple cooling stations can also be cooled simultaneously. Preferably, the spraying angle is set to 40 - 70 degrees, and the spraying angle is set according to the size of the work roll. Optionally, the upward spraying angle of the nozzle 35 is set to be adjustable. The spray pipe can be set in one layer or divided into upper and lower layers. By adjusting the nozzle angle, the upper and lower rolls can be cooled simultaneously, improving the uniformity and cooling efficiency of roll cooling.

[0037] An optional implementation mode is as Figure 1 、 5 shown: The main water pipe 32 is horizontally arranged in the installation groove 37 at one end of the work roll 8. The bottom surface of the installation groove 37 has a slope inclined towards the water collection system 4, and a cover plate is fitted on the installation groove 37.

[0038] An optional implementation mode is as shown in the figure: A filter 6 is also provided between the main water pipe 31 and the main water pipe 32; it can remove debris entering the water pipe, purify the water source at the water inlet end, and prevent nozzle blockage.

[0039] An alternative embodiment is as follows Figure 1 , 2 As shown: The water collection system 4 includes a middle water collection tank 41, a water collection connecting tank 42, and a water collection pool 43. The middle water collection tank 41 is horizontally arranged on the base surface between the roll brackets 2. The water collection connecting tank 42 is arranged on one side of the base surface 1, connected to the middle water collection tank 41 at one end, and communicated with the water collection pool 43 at the other end. By arranging interconnected water collection tanks on the base surface 1, the cooling water spilled on the base surface can be collected and discharged into the water collection pool 43 in time, keeping the site clean. A water circulation device can also be set up for reuse, effectively reducing water source waste.

[0040] An alternative embodiment is as follows Figure 2 As shown: Both the middle water collection tank 41 and the water collection connecting tank 42 are provided with a water collection slope in the direction of the water collection pool 43. This is conducive to the orderly collection of water on the base surface 1.

[0041] An alternative embodiment is as follows Figure 3 , 4 As shown: The base surface 1 is provided with a water collection slope inclined towards the middle water collection tank 41.

[0042] The embodiments disclosed in the present invention are the preferred embodiments, but are not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present invention, they are within the protection scope of the present invention.

Claims

1. A working roll cooling device, characterized in that: include: Base surface (1), One or more cooling stations, composed of two roll brackets (2) coaxially fixed on a base surface (1) and used to support working rolls (8), wherein one or two working rolls (8) are arranged on the cooling station; A spray cooling system (3) is fixedly mounted on both sides of the cooling station to spray cool the working rolls (8) mounted on the roll bracket (2); A water collection system (4), the water collection system (4) being arranged on the base surface (1) and interconnected, and used for collecting and draining cooling water on the base surface (1); The electric control operating system (7) is electrically connected to the spray cooling system (3).

2. The working roll cooling device according to claim 1, characterized in that: The spray cooling system (3) comprises: a main water pipe (31), a main water pipe (32), a connecting branch pipe (33), a spray pipe (34) and a spray head (35); one end of the main water pipe (31) is connected to a water source, and the other end is connected to the main water pipe (32); the spray pipe (34) is connected to the main water pipe (32) through the connecting branch pipe (33); the spray pipe (34) is symmetrically arranged on both sides of the working roll (8) through a support frame (36); the two spray pipes (34) are symmetrically provided with spray heads (35) inclined upward at a spraying angle at intervals, and the spray cooling water is made to converge above the central axis of the working roll (8) to form a water curtain to spray the working roll (8) with water curtain.

3. The working roll cooling device according to claim 2, characterized in that: Two spray pipes (34) are arranged in parallel above and below the support frame (36); the spray heads (35) arranged on the two spray pipes (34) have different spray angles, and the spray angles are set to be 40-70 degrees.

4. The working roll cooling device according to claim 2, characterized in that: The main water pipe (32) is horizontally arranged in a mounting groove (37) at one end of the working roller (8), the bottom surface of the mounting groove (37) is provided with a slope inclined toward the water collection system (4), and a cover plate is adapted to be provided on the mounting groove (37).

5. The working roll cooling device according to claim 2, characterized in that: Electric regulating valves (5) are also provided between the main water pipe (31) and the main water pipe (32) and between the spray pipe (34) and the main water pipe (32), respectively. The electric regulating valves (5) are electrically connected to the electric control operating system (7).

6. The working roll cooling device according to claim 2, characterized in that: A filter (6) is also provided between the main water pipe (31) and the main water pipe (32).

7. The working roll cooling device according to claim 1, characterized in that: The water collection system (4) comprises: a middle water collection trough (41), a water collection connecting trough (42) and a water collection pool (43); the middle water collection trough (41) is transversely arranged on the base surface between the roller brackets (2); the water collection connecting trough (42) is arranged on one side of the base surface (1), one end of which is connected to the middle water collection trough (41) and the other end of which is connected to the water collection pool (43).

8. The working roll cooling device according to claim 7, characterized in that: The middle water collection trough (41) and the water collection connecting trough (42) are both provided with a water collection slope in a direction of flowing toward the water collection pool (43).

9. The working roll cooling device according to claim 1, characterized in that: The base surface (1) is provided with a water collection slope inclined towards the central water collection tank (41).

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