Continuous casting billet cooling device

Abstract

The invention relates to the technical field of continuous casting billet cooling, and discloses a continuous casting billet cooling device which is characterized in that a plurality of square grooves are symmetrically formed in the top end of an upper cooling frame, upper cooling devices used for cooling continuous casting billets are arranged in the grooves in a sliding mode, upper spray heads are arranged on the bottom face of the upper cooling frame, and an upper pump machine is connected to the top end of the upper cooling frame; one side of the lower cooling frame is connected with a plurality of lower pumps, and one side of the inner wall of the lower cooling frame is connected with a plurality of lower conveying devices which are driven by a motor and used for conveying the continuous casting billets. According to the device, a lower cooling device is synchronously started when an upper cooling device and an upper spray head are started, a lower pump machine supplies water to the lower cooling spray head for spraying, water vapor sprayed by the lower cooling spray head can be sprayed out from a flowing groove, and meanwhile, the upper cooling spray head on the arc-shaped top face of the bottom of the adjusted movable support is synchronously started; the upper cooling spray head sprays water vapor towards the side face of the continuous casting billet, the upper spray head sprays water vapor downwards, it is guaranteed that all the faces of the continuous casting billet are evenly cooled, and the situation of cracking caused by uneven heating is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of continuous casting billet cooling, in particular to a continuous casting billet cooling device. Background Art

[0002] The continuous casting billet is the product obtained by casting the molten steel from the steelmaking furnace through the continuous casting machine. During the continuous casting and steelmaking process, the molten steel is gradually solidified into billets of the required specifications and shapes through the crystallizer. After forming, it is transported from the crystallizer outlet to the secondary cooling area, and the solidified billets are forced to cool through the cooling device.

[0003] For example, CN 209716421 U in the prior art discloses a continuous casting billet cooling device, comprising a concave base and a rectangular frame; the concave base and the rectangular frame are both screwed to the ground, and the rectangular frame and the concave base are placed on the right side of the roller from left to right in sequence; support plates are welded to the upper and lower ends of the left side of the inner cavity of the concave base, and the right side of the support plate is welded to the concave base; the tops of the two support plates located at the upper and lower ends of the inner cavity of the concave base are respectively screwed to an air compressor and a water pump; the water inlet of the water pump is clamped with one end of a water inlet pipe, and the other end of the water inlet pipe passes through the support plate and extends from the right side of the concave base to the inner cavity of the water tank; the water outlet of the water pump is clamped with one end of a water outlet pipe; the continuous casting billet cooling device can not only spray cooling water evenly on the surface of the billet to avoid cracks on the surface of the billet, but also has high cooling efficiency. Although the cooling is carried out in the form of upper and lower spraying, the continuous casting billet and the conveying equipment cannot be cooled well, which will cause uneven local cooling.

[0004] Therefore, the existing cooling devices all spray cooling water directly on the surface of the ingot, which cannot be sprayed evenly on the surface of the ingot, which easily causes cracks on the surface of the ingot, and the cooling efficiency is low. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present invention provides a continuous casting billet cooling device having advantages such as uniform cooling, and solves the above-mentioned technical problems.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a continuous casting billet cooling device, comprising a lower cooling frame and a motor, the motor is fixed to an external supporting frame, an upper cooling frame is arranged at the top of the lower cooling frame, a plurality of square grooves are symmetrically opened at the top of the upper cooling frame, an upper cooling device for cooling the continuous casting billet is slidably arranged in the groove, an upper nozzle is arranged on the bottom surface of the upper cooling frame, an upper pump is connected to the top of the upper cooling frame, a plurality of lower pumps are connected to one side of the lower cooling frame, a plurality of lower conveying devices driven by the motor and used for transmitting the continuous casting billet are connected to one side of the inner wall of the lower cooling frame, and a plurality of lower cooling devices for cooperating with the lower conveying device to cool the continuous casting billet are connected to the other side of the inner wall of the lower cooling frame, the output end of the motor is connected to a first transmission wheel, the first transmission wheel is arranged on the side of the lower cooling frame opposite to the lower pump, and a plurality of second transmission wheels are arranged on the side of the lower cooling frame opposite to the lower pump, and the second transmission wheel is connected to the first transmission wheel by a first transmission belt and a second transmission belt.

[0009] As a preferred technical solution of the present invention, a plurality of upper nozzles are provided and fixedly installed at equal intervals on the bottom surface of the upper cooling frame. The upper nozzles are connected to an upper pump machine, and the upper pump machine supplies water to the upper nozzles.

[0010] As a preferred technical solution of the present invention, the lower conveying device includes a roller body, a rotating interface, a flow groove and a supporting protrusion.

[0011] As a preferred technical solution of the present invention, the roller body is rotatably mounted on the inner wall of the lower cooling frame, the rotating interface is fixedly mounted on the side terminal of the roller body close to the motor, the flow grooves are equidistantly opened on the outer surface of the roller body, and the support protrusions are equidistantly arranged on the outer surface of the roller body.

[0012] As a preferred technical solution of the present invention, the first rotating interface of the lower conveying device is fixedly installed with the first transmission wheel, and the rotating interfaces of the remaining lower conveying devices are fixedly installed with the second transmission wheel. The output end of the motor is rotationally connected with the first transmission wheel, the first transmission wheel and the second transmission wheel closest to the first transmission wheel are connected with a first transmission belt, and the multiple second transmission wheels are connected to each other with multiple second transmission belts, wherein the first lower conveying device is the lower conveying device closest to the motor, and the sum of the number of the first transmission wheel and the multiple second transmission wheels is consistent with the number of lower conveying devices.

[0013] As a preferred technical solution of the present invention, the lower cooling device includes a cooling pipe, a fixing seat and a lower cooling nozzle.

[0014] As a preferred technical solution of the present invention, the cooling pipes are fixedly installed between both sides of the lower cooling rack, and the cooling pipes are all inside the roller body. The cooling pipes correspond to the lower pumps one by one, and each lower pump is correspondingly connected to three lower cooling nozzles in the same lower cooling device. The lower cooling nozzles are fixedly installed on the top of the fixed seat, and the pipeline connected to the lower pump is inside the cooling pipe. The number of the fixed seats is three, and they are fixedly installed on the top of the cooling pipe.

[0015] As a preferred technical solution of the present invention, the lower cooling nozzles correspond to the flow grooves one by one, and the water vapor sprayed by the lower cooling nozzles can be ejected from the flow grooves.

[0016] As a preferred technical solution of the present invention, the upper cooling device includes a moving bracket, upper cooling nozzles, a clamping ring, and a nozzle connection bin.

[0017] As a preferred technical solution of the present invention, the moving bracket is slidably connected to the slide rails in the two square grooves at the top end of the upper cooling rack. The nozzle connection bin is arranged on the arc-shaped top surface of the bottom of the moving bracket and does not contact the upper nozzles when the moving bracket moves. The nozzle connection bin is used to connect the upper pump and the upper cooling nozzles through a hose. A clamping ring is arranged on the side of the moving bracket away from the upper pump, and the clamping ring is used to limit the hose. The hose passes through the clamping ring and passes through the square groove and then communicates with the nozzle connection bin.

[0018] Compared with the prior art, the present invention provides a continuous casting billet cooling device, which has the following beneficial effects:

[0019] 1. When the upper cooling device and the upper nozzles are started in the present invention, the lower cooling device is started synchronously. The lower cooling nozzles are supplied with water by the lower pumps and ejected. The water vapor sprayed by the lower cooling nozzles can be ejected from the flow grooves. At the same time, the upper cooling nozzles at the arc-shaped top surface of the bottom of the moving bracket that have been adjusted are started synchronously, and the upper cooling nozzles spray water vapor towards the side of the continuous casting billet. At this time, the upper nozzles spray water vapor downward, ensuring that all surfaces of the continuous casting billet are evenly cooled, thereby avoiding the cracking caused by uneven heating.

[0020] 2. After the motor is started in the present invention, it will drive the rollers of the first lower conveying device to rotate. At this time, the first driving wheel rotates to drive the first driving belt to rotate, thereby driving the second driving wheel to rotate, driving all the rollers in sequence, and finally driving the continuous casting billet to be transported directly below the upper cooling rack. The cross-section of the second driving wheel is in the shape of a "king", and the second driving belts are alternately arranged at different notches of the "king" shape, thereby realizing linkage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0022] Figure 2 It is a three-dimensional schematic diagram of the present invention;

[0023] Figure 3 It is a three-dimensional bottom view schematic diagram of the present invention;

[0024] Figure 4 It is a three-dimensional schematic diagram of the lower conveying device of the present invention;

[0025] Figure 5 It is a three-dimensional schematic diagram of the lower cooling device of the present invention;

[0026] Figure 6 It is a three-dimensional schematic diagram of the upper cooling device of the present invention;

[0027] Figure 7 It is a three-dimensional schematic diagram of the upper cooling device of the present invention.

[0028] Among them: 1. lower cooling rack; 2. upper cooling rack; 3. lower pump; 4. lower conveying device; 401. roller body; 402. rotating interface; 403. flow groove; 404. supporting protrusion; 5. motor; 6. lower cooling device; 601. cooling pipe; 602. fixing seat; 603. lower cooling nozzle; 7. upper pump; 8. upper cooling device; 801. movable bracket; 802. upper cooling nozzle; 803. retaining ring; 804. nozzle connecting bin; 9. first transmission wheel; 10. first transmission belt; 11. second transmission belt; 12. upper nozzle; 13. second transmission wheel. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-7A continuous casting billet cooling device comprises a lower cooling frame 1 and a motor 5, the motor 5 is fixed to an external support frame (not shown in the figure), an upper cooling frame 2 is arranged on the top of the lower cooling frame 1, a plurality of square grooves are symmetrically provided on the top of the upper cooling frame 2, an upper cooling device 8 for cooling the continuous casting billet is slidably arranged in the groove, an upper nozzle 12 is arranged on the bottom surface of the upper cooling frame 2, an upper pump 7 is connected to the top of the upper cooling frame 2, a plurality of lower pumps 3 are connected to one side of the lower cooling frame 1, a plurality of lower conveying devices 4 driven by the motor 5 and used for transmitting the continuous casting billet are connected to one side of the inner wall of the lower cooling frame 1, a plurality of lower cooling devices 6 for cooperating with the lower conveying device 4 to cool the continuous casting billet are connected to the other side of the inner wall of the lower cooling frame 1, a first transmission wheel 9 is connected to the output end of the motor 5, and the first transmission wheel is arranged on the lower cooling frame 1 is on the side opposite to the lower pump 3, and a plurality of second transmission wheels 13 are arranged on the side opposite to the lower pump 3 of the lower cooling frame 1. The second transmission wheel 13 is connected to the first transmission wheel 9 by the first transmission belt 10 and the second transmission belt 11. When the upper cooling device 8 and the upper nozzle 13 are started, the lower cooling device 6 is started synchronously. The lower cooling nozzle 603 is supplied with water by the lower pump 3 and sprays out. The water vapor sprayed by the lower cooling nozzle 603 can be sprayed out from the flow groove 403. At the same time, the upper cooling nozzle 802 at the arc-shaped top surface of the bottom of the movable bracket 801 that has been adjusted is started synchronously. The upper cooling nozzle 802 sprays water vapor toward the side of the continuous casting billet. At this time, the upper nozzle 13 sprays water vapor downward, ensuring that each surface of the continuous casting billet is evenly cooled, thereby avoiding cracking caused by uneven heating.

[0031] Furthermore, a plurality of upper nozzles 12 are provided and fixedly installed at equal intervals on the bottom surface of the upper cooling frame 2 . The upper nozzles 12 are connected to the upper pump 7 , and the upper pump 7 supplies water to the upper nozzles 12 .

[0032] Furthermore, the lower conveying device 4 includes a roller body 401, a rotating interface 402, a flow groove 403 and a support protrusion 404. The roller body 401 is rotatably installed on the inner wall of the lower cooling frame 1, the rotating interface 402 is fixedly installed on the side terminal of the roller body 401 close to the motor 5, the flow groove 403 is equidistantly opened on the outer surface of the roller body 401, and the support protrusion 404 is equidistantly arranged on the outer surface of the roller body 401.

[0033] Further, the rotation interface 402 of the first lower conveying device 4 is fixedly installed between the first driving wheel 9, and the rotation interfaces 402 of the remaining lower conveying devices 4 are fixedly installed between the second driving wheels 13. The output end of the motor 5 is rotatably connected to the first driving wheel 9. The first driving wheel 9 and the second driving wheel 13 closest to the first driving wheel 9 are connected by a first driving belt 10. The plurality of second driving wheels 13 are connected to each other by a plurality of second driving belts 11. Among them, the first lower conveying device 4 is the lower conveying device 4 closest to the motor 5. The sum of the number of the first driving wheel 9 and the plurality of second driving wheels 13 is the same as the number of the lower conveying devices 4. After the motor 5 is started, it drives the roller body 401 of the first lower conveying device 4 to rotate. At this time, the first driving wheel 9 rotates to drive the first driving belt 10 to rotate, thereby driving the second driving wheel 13 to rotate, sequentially driving all the roller bodies 401, and finally driving the continuous casting billet to be transported directly below the upper cooling rack 2. The cross-section of the second driving wheel 13 is in the shape of a "king", and the second driving belts 11 are alternately arranged at different notches of the "king" shape, so as to achieve linkage.

[0034] Further, the lower cooling device 6 includes a cooling pipe 601, a fixed seat 602 and a lower cooling nozzle 603. The cooling pipe 601 is fixedly installed between the two sides of the lower cooling rack 1. The cooling pipes 601 are all inside the roller body 401. The cooling pipes 601 correspond to the lower pumps 3 one by one, and each lower pump 3 is correspondingly connected to three lower cooling nozzles 603 in the same lower cooling device 6. The lower cooling nozzles 603 are fixedly installed on the top of the fixed seat 602, and the pipeline connected to the lower pump 3 is inside the cooling pipe 601. The number of the fixed seats 602 is three, and they are fixedly installed on the top of the cooling pipe 601. The lower cooling device 6 is started synchronously when the upper cooling device 8 and the upper nozzle 13 are started. The lower cooling nozzles 603 are supplied with water by the lower pumps 3 and sprayed out. Since the support bumps 404 equidistantly arranged on the outer surface of the roller body 401 create a gap between the continuous casting billet and the roller body 401, the lower cooling nozzles 603 correspond to the flow grooves 403 one by one, and the water vapor sprayed by the lower cooling nozzles 603 can be sprayed out from the flow grooves 403. At this time, the bottom surface of the continuous casting billet is ensured to be fully cooled.

[0035] Furthermore, the upper cooling device 8 includes a movable bracket 801, an upper cooling nozzle 802, a retaining ring 803 and a nozzle connecting bin 804. The movable bracket 801 is slidably connected to the slide rails in the two square grooves at the top of the upper cooling frame 2. The nozzle connecting bin 804 is arranged on the curved top surface of the movable bracket 801 at the bottom surface of the upper cooling frame 2, and does not contact the upper nozzle 12 when the movable bracket 801 moves. The nozzle connecting bin 804 is used to connect the upper pump machine 7 with the upper cooling nozzle 802 through the laying of a hose. A retaining ring 803 is arranged on the side of the movable bracket 801 away from the upper pump machine 7. The retaining ring 803 is used to limit the hose. The hose passes through the retaining ring 803 and is connected to the nozzle connecting bin 804 after passing through the square groove. When the lower cooling device 4 is started, the adjustment has been completed. The upper cooling nozzle 802 at the arc-shaped top surface at the bottom of the movable bracket 801 is started synchronously, and the upper cooling nozzle 802 sprays water vapor toward the side of the continuous casting billet. At this time, the upper nozzle 13 sprays water vapor downward to cool the top surface of the continuous casting billet, thereby ensuring that all surfaces of the continuous casting billet are cooled evenly, thereby avoiding cracking caused by uneven heating. When facing billets of different types, two movable brackets 801 can be slid to adjust the distance between the two movable brackets 801. Since the upper cooling nozzle 802 generates a force in the opposite direction when spraying, it will provide a torsion to the movable bracket 801, so that the contact part of the movable bracket 801 and the upper cooling frame 2 generates downward pressure, thereby avoiding a large relative sliding of the movable bracket 801.

[0036] When the present invention is in use, the motor 5 is first started to drive the roller body 401 of the first lower conveying device 4 to rotate. At this time, the first transmission wheel 9 rotates to drive the first transmission belt 10 to rotate, thereby driving the second transmission wheel 13 to rotate, and driving all the roller bodies 401 in turn, and finally driving the continuous casting billet to be transported to the bottom of the upper cooling frame 2. At this time, the motor 5 stops rotating, and the lower cooling device 6 is started synchronously when the upper cooling device 8 and the upper nozzle 13 are started. The lower cooling nozzle 603 is sprayed with water supplied by the lower pump 3, and the water vapor sprayed by the lower cooling nozzle 603 can be sprayed from the flow groove 403. At the same time, the upper cooling nozzle 802 at the arc-shaped top surface of the bottom of the movable bracket 801 that has been adjusted is started synchronously, and the upper cooling nozzle 802 sprays water vapor toward the side of the continuous casting billet. At this time, the upper nozzle 13 sprays water vapor downward. After cooling is completed, the motor 5 starts to drive the billet to be transported and discharged.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous casting billet cooling device, comprising a lower cooling frame (1) and a motor (5), wherein the motor (5) is fixed to an external support frame, characterized in that: An upper cooling frame (2) is arranged at the top of the lower cooling frame (1), a plurality of square grooves are symmetrically provided at the top of the upper cooling frame (2), an upper cooling device (8) for cooling the continuous casting billet is slidably arranged in the groove, an upper nozzle (12) is arranged at the bottom of the upper cooling frame (2), an upper pump (7) is connected to the top of the upper cooling frame (2), a plurality of lower pumps (3) are connected to one side of the lower cooling frame (1), a plurality of lower conveying devices (4) driven by a motor (5) and used for conveying the continuous casting billet are connected to one side of the inner wall of the lower cooling frame (1), The other side of the inner wall of the lower cooling frame (1) is connected to a plurality of lower cooling devices (6) for cooperating with the lower conveying device (4) to cool the continuous casting billet; the output end of the motor (5) is connected to a first transmission wheel (9); the first transmission wheel is arranged on the side of the lower cooling frame (1) opposite to the lower pump (3); the side of the lower cooling frame (1) opposite to the lower pump (3) is provided with a plurality of second transmission wheels (13); the second transmission wheel (13) is connected to the first transmission wheel (9) by means of a first transmission belt (10) and a second transmission belt (11).

2. The continuous casting billet cooling device according to claim 1, characterized in that: A plurality of upper nozzles (12) are provided and fixedly installed at equal intervals on the bottom surface of the upper cooling rack (2); the upper nozzles (12) are connected to an upper pump (7), and the upper pump (7) supplies water to the upper nozzles (12).

3. The continuous casting billet cooling device according to claim 1, characterized in that: The lower conveying device (4) comprises a roller body (401), a rotating interface (402), a flow groove (403) and a supporting protrusion (404).

4. The continuous casting billet cooling device according to claim 3, characterized in that: The roller body (401) is rotatably mounted on the inner wall of the lower cooling frame (1), the rotating interface (402) is fixedly mounted on the side terminal of the roller body (401) close to the motor (5), the flow grooves (403) are equidistantly opened on the outer surface of the roller body (401), and the supporting protrusions (404) are equidistantly arranged on the outer surface of the roller body (401).

5. The continuous casting billet cooling device according to claim 3, characterized in that: The first lower conveying device (4) has a rotating interface (402) fixedly mounted on the first transmission wheel (9), and the remaining lower conveying devices (4) have rotating interfaces (402) fixedly mounted on the second transmission wheels (13). The output end of the motor (5) is rotationally connected to the first transmission wheel (9). The first transmission wheel (9) is connected to a second transmission wheel (13) closest to the first transmission wheel (9) via a first transmission belt (10), and the plurality of second transmission wheels (13) are connected to each other via a plurality of second transmission belts (11). The first lower conveying device (4) is the lower conveying device (4) closest to the motor (5), and the sum of the number of the first transmission wheel (9) and the plurality of second transmission wheels (13) is the same as the number of the lower conveying devices (4).

6. The continuous casting billet cooling device according to claim 3, characterized in that: The lower cooling device (6) comprises a cooling pipe (601), a fixing seat (602) and a lower cooling nozzle (603).

7. A continuous casting billet cooling device according to claim 6, characterized in that: The cooling pipe (601) is fixedly installed between the two sides of the lower cooling frame (1), and the cooling pipe (601) is inside the roller body (401). The cooling pipe (601) corresponds to the lower pump machine (3) one by one, and each lower pump machine (3) is connected to three lower cooling nozzles (603) in the same lower cooling device (6). The lower cooling nozzle (603) is fixedly installed on the top of the fixed seat (602), and the pipeline connected to the lower pump machine (3) is inside the cooling pipe (601). There are three fixed seats (602) and they are fixedly installed on the top of the cooling pipe (601).

8. The continuous casting billet cooling device according to claim 7, characterized in that: The lower cooling nozzle (603) corresponds to the flow groove (403) one by one, and the water vapor sprayed by the lower cooling nozzle (603) can be sprayed out from the flow groove (403).

9. The continuous casting billet cooling device according to claim 7, characterized in that: The upper cooling device (8) comprises a movable bracket (801), an upper cooling nozzle (802), a clamping ring (803) and a nozzle connecting chamber (804).

10. The continuous casting billet cooling device according to claim 9, characterized in that: The movable bracket (801) is slidably connected to the slide rails in the two square grooves at the top of the upper cooling rack (2); the nozzle connection bin (804) is arranged on the movable bracket (801) at the arc-shaped top surface of the bottom surface of the upper cooling rack (2), and does not contact the upper nozzle (12) when the movable bracket (801) moves; the nozzle connection bin (804) is used to connect the upper pump machine (7) and the upper cooling nozzle (802) through the layout of the hose; a retaining ring (803) is provided on the side of the movable bracket (801) away from the upper pump machine (7); the retaining ring (803) is used to limit the hose; the hose passes through the retaining ring (803) and the square groove and then is connected with the nozzle connection bin (804).

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