CN212597934U

CN212597934U - Alloy roll cooling device

Info

Publication number: CN212597934U
Application number: CN201921551409.7U
Authority: CN
Inventors: 牛蓉
Original assignee: 牛蓉
Current assignee: Wuhai Sanmei International Mining Co., Ltd
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2021-02-26
Anticipated expiration: 2029-09-18

Abstract

The utility model discloses an alloy roll cooling device belongs to the metal rolling mill accessory, and this cooling device can install on current hot rolling mill, including cooling device and coolant tank, cooling device includes arc cooling tube, atomizing nozzle, baffle, pipeline and tee bend, the utility model discloses installed cooling device and atomizing device additional on traditional hot roll, can evenly spray low-temperature cooling water to the roll surface with vaporific form, can be quick, even cooling hot roll for the roll can cool off at once after being heated by high temperature steel billet, plays the effect of approximate quenching, has improved the wearability and the fatigue strength of roll.

Description

Alloy roll cooling device

Technical Field

The utility model belongs to the metal rolling mill accessory especially relates to an alloy roll cooling device.

Background

The existing hot roller is lack of a special online cooling system, so that the surface of the roller is easy to oxidize during hot rolling, scale textures are generated, the roller is not favorable for the version type of a strip, the abrasion of a roller body is further aggravated, the hot rolling is forced to be interrupted, a new roller is replaced, an old roller can be continuously used after being processed by a grinding machine, the hot rolling production efficiency is reduced, and the production cost is improved.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses installed cooling device and atomizing device additional on traditional hot roll, can evenly spray low-temperature cooling water to the roll surface with vaporific form, can be quick, even cooling hot roll for the roll can cool off at once after being heated by high temperature steel billet, plays the effect of approximate quenching, has improved the wearability and the fatigue strength of roll.

The utility model discloses an above-mentioned problem is solved to following technical means:

the utility model provides an alloy roll cooling device installs on current hot rolling steel mill, its characterized in that, includes cooling device and cooling water tank, wherein: the cooling device comprises 2 arc-shaped cooling pipes, atomizing nozzles, baffles, pipelines and a tee joint, wherein the arc-shaped cooling pipes are respectively arranged on one side of a first roller and one side of a second roller in the hot rolling mill, the atomizing nozzles are arranged in a plurality of numbers and are arranged on the inner wall of the arc-shaped cooling pipes through connecting threads, the baffles are arranged at two ends of the arc-shaped cooling pipes through screws and are used for gathering atomized cooling water, one end of each pipeline is communicated with the arc-shaped cooling pipe, and the other end of each pipeline is communicated with a cooling water tank through the tee joint; the cooling water tank includes high pressure water pump and low temperature water tank, the play water end of high pressure water pump provides high pressure cooling water to the arc cooling tube through the tee bend, and the end of intaking of high pressure water pump passes through the bottom of drinking-water pipe intercommunication low temperature water tank, and the end of drinking-water pipe is provided with the filter head.

Further, the low-temperature water tank comprises a tank body, a mesh-shaped partition plate, a low-temperature water cavity, an ice-water mixing cavity, an ice inlet bevel, a water inlet pipe and a water outlet pipe, the inside of the tank body is divided into two spaces by the mesh-shaped partition plate, namely the low-temperature water cavity and the ice-water mixing cavity, the ice inlet bevel is arranged at the top of the ice-water mixing cavity, the water inlet pipe is arranged on the upper portion of the side wall of the ice-water mixing cavity, and the water outlet pipe is arranged on the lower portion of the side.

Furthermore, a support guide plate for guiding the movement of the billet is further arranged on one side of the first roller and one side of the second roller of the hot rolling mill, and a row of guide wheels are arranged at the position, close to the billet, of the support guide plate. The steel billet guiding device is characterized by further comprising a bottom guiding groove, wherein the bottom guiding groove is used for guiding a steel billet to move directionally, a sliding groove is formed in the middle of the bottom guiding groove, and the top surface of the bottom guiding groove is an inclined plane.

Further, atomizing nozzle includes inside tapered spray tube, bottom installation screw thread, base, shower nozzle, mounting bracket, cone, mounting hole and installation screw, wherein: bottom installation screw thread is used for the screw hole of sealing connection arc cooling tube inner wall, the screw hole that fixed mounting bracket used is seted up to the end of shower nozzle, the mounting bracket is used for falling the cone for the type of falling U structure and establishes the exit at the tapered spray tube, the both sides of mounting bracket are provided with a plurality of mounting holes that are used for adjusting the cone height, through the installation screw can fix the mounting bracket directly over the shower nozzle.

The utility model discloses an alloy roll cooling device has following beneficial effect: 1. the cooling water is uniformly sprayed on the hot roll in a fog shape by the atomizing nozzle, so that the surface of the roll is uniformly cooled, and the thermal stress concentration is not easy to generate. The device is provided with the cooling water tank, and can actively cool the cooling water, so that the roller can be immediately cooled after being heated by the high-temperature steel billet, the approximate quenching effect is achieved, and the wear resistance and the fatigue strength of the roller are improved.

Drawings

The invention is further described with reference to the following figures and examples.

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the external structure of the cooling water tank of the present invention;

FIG. 3 is a schematic view of the internal structure of the cooling water tank of the present invention;

FIG. 4 is a schematic view of the installation of the support guide plate in the present invention;

FIG. 5 is a schematic view of the bottom guide groove of the present invention;

fig. 6 is a schematic view of the structure of the atomizing nozzle of the present invention.

In the figure, 1-hot rolling mill, 101-first roller, 102-second roller, 103-support guide plate, 104-billet, 105-bottom guide groove, 2-cooling device, 201-arc cooling pipe, 202-atomizing nozzle, 203-baffle, 204-pipeline, 205-tee joint, 2021-tapered spray pipe, 2022-bottom mounting thread, 2023-base, 2024-nozzle, 2025-mounting rack, 2026-cone, 2027-mounting hole, 2028-mounting screw, 3-cooling water tank, 301-high pressure water pump, 3011-pumping pipe, 3012-filter head, 302-low temperature water tank, 3021-box, 3022-reticular baffle, 3023-low temperature water cavity, 3024-ice water mixing cavity, 3025-ice inlet oblique port, 3026-water inlet pipe, 3027-water outlet pipe.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, an alloy roll cooling device is installed on an existing hot rolling mill 1, and the cooling device can be installed horizontally and symmetrically or vertically and is determined according to the positions of a first roll 101 and a second roll 102 in the hot rolling mill 1. In fig. 1, the first roll 101 and the second roll 102 rotate vertically, so that the cooling device 2 is vertically installed on one side of the hot rolling mill 1, the cooling device 2 is connected to the cooling water tank 3, as shown in fig. 2 and 3, the cooling water tank 3 comprises a high-pressure water pump 301 and a low-temperature water tank 302, the water outlet end of the high-pressure water pump 301 provides high-pressure cooling water to the arc-shaped cooling pipe 201 through a tee 205, the water inlet end of the high-pressure water pump 301 is communicated with the bottom of the low-temperature water tank 302 through a water suction pipe 3011, and the end of the water suction pipe 3011 is provided with a filter 301. Specifically, the low temperature water tank 302 includes a tank body 3021, a mesh partition 3022, a low temperature water chamber 3023, an ice and water mixing chamber 3024, an ice inlet bevel 3025, a water inlet pipe 3026, and a water outlet pipe 3027, where the inside of the tank body 3021 is divided into two spaces by the mesh partition 3022, that is, the low temperature water chamber 3023 and the ice and water mixing chamber 3024, the ice inlet bevel 3025 is installed at the top of the ice and water mixing chamber 3024, the water inlet pipe 3026 is used for continuously supplying water and is installed on the upper portion of the side wall of the ice and water mixing chamber 3024, and the water outlet pipe 3027 is used for washing and draining water and is installed on.

In actual work, ice blocks are put into the ice-water mixing cavity 3024 of the low-temperature water tank 302 from the ice inlet bevel port 3025, at this time, the other side of the mesh-shaped partition 3022 is the low-temperature water cavity 3023, the temperature of the ice-water mixture is close to zero, and the cooling effect by the low-temperature cooling water is better.

As shown in fig. 1 and 4, the cooling device 2 includes arc cooling pipes 201, atomizing nozzles 202, baffles 203, pipelines 204 and a tee joint 205, the number of the arc cooling pipes 201 is 2, and the arc cooling pipes are respectively installed on one side of a first roller 101 and one side of a second roller 102 in a hot rolling mill 1, a billet 4 vertically enters the first roller 101 and the second roller 102 for hot rolling, in order to reliably guide the movement of the billet 104, a support guide plate 103 and a bottom guide groove 105 are further provided in the present scheme, as shown in fig. 4 and 5, wherein a row of guide wheels are provided at a position of the support guide plate 103 close to the billet 104, a chute is provided at the middle part of the bottom guide groove 105, the top surface of the bottom guide groove 105 is an inclined plane, the inclined plane is also provided for conveniently guiding the billet 104 into the chute, the bottom guide groove 105 is higher than the lower edge of the rollers to ensure that the billet 4 can be sufficiently hot rolled, meanwhile, the bottom guide groove 105 may be provided in 2 numbers respectively installed at the inlet and outlet of the hot rolling mill 1.

It should be noted that, in fig. 4, the baffle 203 is mounted on the outer wall of the arc-shaped cooling pipes 201 by screws for gathering the atomized cooling water, and the baffle 203 is mounted at both ends of each arc-shaped cooling pipe 201. One end of the pipeline 204 is communicated with the arc-shaped cooling pipe 201, and the other end of the pipeline 204 is communicated with the cooling water tank 3 through a tee joint 205.

It should be noted that the number of the atomizing nozzles 202 is plural and the atomizing nozzles 202 are installed on the inner wall of the arc-shaped cooling pipe 201 through the connecting screw, the number of the atomizing nozzles 202 in this embodiment is 56, 7 rows, and 8 rows, and the length of the arc-shaped cooling pipe 201 is the same as the length of the first and

second rolls

101 and 102. The specific structure of the atomizing nozzle 202 is shown in fig. 6, and the atomizing nozzle 202 includes an inner tapered nozzle 2021, a bottom mounting thread 2022, a base 2023, a nozzle 2024, a mounting block 2025, a cone 2026, a mounting hole 2027 and a mounting screw 2028, wherein: the bottom mounting screw 2022 is used for sealing and connecting with a threaded hole on the inner wall of the arc-shaped cooling pipe 201, a threaded hole for fixing the mounting rack 2025 is formed at the tail end of the spray head 2024, the mounting rack 2025 is of an inverted U-shaped structure and is used for inverting the cone 2026 at the outlet of the tapered spray pipe 2021, a plurality of mounting holes 2027 for adjusting the height of the cone 2026 are formed in two sides of the mounting rack 2025, and the mounting rack 2025 can be fixed at the top of the spray head 2024 through mounting screws 2028.

In particular, the height of the cone 2026 from the outlet of the tapered nozzle 2021 can be varied by adjusting the mounting screws 2028 to pass through different mounting holes 2027. This atomizing nozzle 202 has combined tapered spray pipe 2021 and cone 2026 structure, high-speed water spray efflux collides with the firing pin of cone 2026, produce the ultrasonic wave of high strength, reduce the water droplet particle after the collision, the traditional method through reducing the nozzle aperture and improving water pressure that has broken away from, it is effectual to atomize, the big difficult jam in nozzle aperture, reduce the energy consumption, the water conservation quantity, atomizing device spun cooling water is even tiny particle vaporific, this kind of atomized cooling water meets upper and lower roll of high temperature, can evaporate immediately, can not influence hot rolling billet 104. Meanwhile, the output quantity of the atomization device can be adjusted according to the intermittent work, the water pump power and the pipe diameter to generate a proper amount of atomized cooling water, so that different hot rolling mills 1 are met.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. An alloy roll cooling device is installed on an existing hot rolling mill (1), and is characterized by comprising a cooling device (2) and a cooling water tank (3), wherein:

the cooling device (2) comprises 2 arc-shaped cooling pipes (201), atomizing nozzles (202), baffles (203), pipelines (204) and a tee joint (205), wherein the arc-shaped cooling pipes (201) are respectively installed on one side of a first roller (101) and one side of a second roller (102) in a hot rolling mill (1), the atomizing nozzles (202) are multiple in number and installed on the inner wall of the arc-shaped cooling pipes (201) through connecting threads, the baffles (203) are installed on the outer wall of the arc-shaped cooling pipes (201) through screws and used for gathering atomized cooling water, one ends of the pipelines (204) are communicated with the arc-shaped cooling pipes (201), and the other ends of the pipelines (204) are communicated with a cooling water tank (3) through the tee joint (205);

the cooling water tank (3) comprises a high-pressure water pump (301) and a low-temperature water tank (302), the water outlet end of the high-pressure water pump (301) provides high-pressure cooling water for the arc-shaped cooling pipe (201) through a tee joint (205), the water inlet end of the high-pressure water pump (301) is communicated with the bottom of the low-temperature water tank (302) through a water pumping pipe (3011), and the tail end of the water pumping pipe (3011) is provided with a filter head (3012);

the atomizing nozzle (202) comprises an internal tapered nozzle (2021), bottom mounting threads (2022), a base (2023), a spray head (2024), a mounting bracket (2025), a cone (2026), a mounting hole (2027) and mounting screws (2028), wherein: the bottom mounting thread (2022) is used for sealing and connecting with a threaded hole in the inner wall of the arc-shaped cooling pipe (201), a threaded hole for fixing the mounting rack (2025) is formed in the tail end of the spray head (2024), the mounting rack (2025) is of an inverted U-shaped structure and is used for inverting the cone (2026) at an outlet of the tapered spray pipe (2021), a plurality of mounting holes (2027) for adjusting the height of the cone (2026) are formed in two sides of the mounting rack (2025), and the mounting rack (2025) can be fixed to the top of the spray head (2024) through the mounting screws (2028).

2. An alloy roll cooling device as claimed in claim 1, wherein the low temperature water tank (302) comprises a tank body (3021), a net-shaped partition (3022), a low temperature water chamber (3023), an ice water mixing chamber (3024), an ice inlet bevel (3025), a water inlet pipe (3026) and a water outlet pipe (3027), the inside of the tank body (3021) is divided into two spaces by the net-shaped partition (3022), namely, the low temperature water chamber (3023) and the ice water mixing chamber (3024), the ice inlet bevel (3025) is installed at the top of the ice water mixing chamber (3024) and is opened, the water inlet pipe (3026) is installed at the upper side wall of the ice water mixing chamber (3024), and the water outlet pipe (3027) is installed at the lower side wall of the ice water mixing chamber (3024).

3. An alloy roll cooling device according to claim 1, characterized in that the hot rolling mill (1) is further provided with a support and guide plate (103) on one side of the first roll (101) and the second roll (102) for guiding the movement of the steel blank (104), and the support and guide plate (103) is provided with a row of guide wheels at a position close to the steel blank (104).

4. An alloy roll cooling device according to claim 1, further comprising a bottom guide groove (105), wherein the bottom guide groove (105) is used for guiding the billet (104) to move directionally, the middle part of the bottom guide groove (105) is provided with a sliding groove, and the top surface of the bottom guide groove (105) is an inclined plane.