Integral beam type continuous casting steel ladle molten steel pouring-out device with hydraulic cylinder and continuous casting machine

Abstract

The utility model provides an integral beam type continuous casting steel ladle molten steel pouring-out device with a hydraulic cylinder and a continuous casting machine. The molten steel pouring device comprises a jacking hydraulic cylinder, a hydraulic pipeline and a hydraulic control system, the hydraulic pipeline comprises an oil return pipe and an oil inlet pipe which are communicated with a continuous casting fan-shaped section hydraulic system, and the hydraulic control system comprises a one-way valve, an electromagnetic reversing valve, a first hydraulic control one-way valve and a second hydraulic control one-way valve. The oil return pipe is communicated with a first port of the electromagnetic reversing valve through a one-way valve, a second port of the electromagnetic reversing valve is communicated with an oil outlet of the jacking hydraulic cylinder through a first hydraulic control one-way valve, an oil inlet of the jacking hydraulic cylinder is communicated with a third port of the electromagnetic reversing valve through a second hydraulic control one-way valve, and a fourth port of the electromagnetic reversing valve is communicated with the oil inlet pipe. According to the continuous casting machine, the jacking hydraulic cylinder ascends and descends, the steel ladle inclines by a certain angle in the later period of continuous casting pouring, residual molten steel in the steel ladle is completely gathered near a collector nozzle of the steel ladle, the purpose of reducing molten steel pouring residues is finally achieved, and the yield of the molten steel is increased.

Description

Technical Field

[0001] This utility model relates to the technical field of metallurgical industry, and in particular to a continuous casting ladle molten steel pouring device with hydraulic cylinder integral beam and a continuous casting machine. Background Technology

[0002] In the continuous casting process at a steel plant, the ladle rests on the fork arm of the ladle turret, and the molten steel flows down into the tundish via a sliding plate device at the bottom of the ladle. During normal casting, to prevent slag from being drawn into the molten steel and affecting the quality of the cast billet, a portion of molten steel is usually left uncast at the end of the ladle casting process, inevitably resulting in some loss of raw materials. Furthermore, due to repeated use of the ladle, the scouring and erosion of the molten steel can easily cause pits to form in the bottom refractory material, leading to an increasing amount of molten steel remaining in the ladle after casting, thus reducing the steel yield. Therefore, maximizing the amount of molten steel poured out of the ladle, improving the steel yield, and minimizing the loss of raw materials is an effective measure to reduce costs. Utility Model Content

[0003] The main purpose of this utility model is to provide a hydraulic cylinder integral beam continuous casting ladle molten steel pouring device and continuous casting machine, which aims to...

[0004] To achieve the above objectives, this utility model provides a molten steel pouring device for a continuous casting ladle with an integral beam and hydraulic cylinder, comprising a lifting hydraulic cylinder located below the ladle, a hydraulic pipeline connected to the hydraulic chamber of the lifting hydraulic cylinder, and a hydraulic control system, wherein...

[0005] The hydraulic pipeline includes a return oil pipe and an inlet oil pipe connected to the hydraulic system of the continuous casting sector section. The hydraulic control system includes a check valve, a solenoid directional valve, a first hydraulically controlled check valve, and a second hydraulically controlled check valve. The return oil pipe is connected to the first port of the solenoid directional valve via the check valve. The second port of the solenoid directional valve is connected to the outlet of the lifting hydraulic cylinder via the first hydraulically controlled check valve. The inlet of the lifting hydraulic cylinder is connected to the third port of the solenoid directional valve via the second hydraulically controlled check valve. The fourth port of the solenoid directional valve is connected to the inlet oil pipe.

[0006] Preferably, the lifting hydraulic cylinder includes a first hydraulic cylinder and a second hydraulic cylinder located on both sides below the ladle, and the hydraulic lines of the first hydraulic cylinder and the second hydraulic cylinder are connected in parallel.

[0007] Preferably, the hydraulic control system further includes a first one-way throttle valve and a second one-way throttle valve. One end of the first one-way throttle valve is connected to a first hydraulically controlled check valve, and the other end of the first one-way throttle valve is connected to the oil outlet of the first hydraulic cylinder and the second hydraulic cylinder. One end of the second one-way throttle valve is connected to a second hydraulically controlled check valve, and the other end of the second one-way throttle valve is connected to the oil inlet of the first hydraulic cylinder and the second hydraulic cylinder.

[0008] Preferably, a flow meter is installed on the oil inlet pipe.

[0009] Preferably, a pressure gauge is installed on the oil inlet pipe.

[0010] Preferably, the oil inlet pipe is connected to the rotary joint of the rotating tower and then led out through the rotary joint, and the lifting height of the lifting hydraulic cylinder is 120mm~180mm.

[0011] This utility model further proposes a continuous casting machine, including the above-mentioned hydraulic cylinder integral beam continuous casting ladle molten steel pouring device, and also includes a ladle, a load-bearing beam located below the ladle, a weighing sensor located below the load-bearing beam, a fixed base located below the weighing sensor, and a base supported above the fixed base. The fixed base and the base are provided with mounting holes for installing the lifting hydraulic cylinder of the hydraulic cylinder integral beam continuous casting ladle molten steel pouring device.

[0012] Preferably, the rod head of the lifting hydraulic cylinder is a rotatable ball head that abuts against the bottom of the ladle to support its tilting on one side.

[0013] Preferably, the steel ladle is mounted above the load-bearing beam via a pressure block.

[0014] Preferably, a transition shim is installed between the load-bearing beam and the weighing sensor.

[0015] The continuous casting machine proposed in this utility model, by setting a molten steel exhaust device below the ladle and using the hydraulic system of the continuous casting sector to provide hydraulic power oil, achieves the raising and lowering of the lifting hydraulic cylinder with minimal modifications. In the later stage of continuous casting, the ladle is tilted at a certain angle, so that all the remaining molten steel in the ladle is collected near the bottom of the ladle, ultimately reducing the amount of molten steel poured and improving the molten steel yield. The electromagnetic reversing valve is controlled by an electric button, thereby resetting the ladle to allow for the next molten steel pouring operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the hydraulic control system in the hydraulic cylinder integral beam continuous casting ladle molten steel pouring device of this utility model;

[0017] Figure 2 This is a schematic diagram of the continuous casting machine of this utility model.

[0018] In the diagram, 1-first hydraulic cylinder, 2-first one-way throttle valve, 3-first hydraulically controlled one-way valve, 4-solenoid directional valve, 5-one-way valve, 6-second hydraulically controlled one-way valve, 7-second one-way throttle valve, 8-second hydraulic cylinder, 9-base, 10-lifting hydraulic cylinder, 11-load-bearing beam, 12-pressure block, 13-transition gasket, 14-weighing sensor, 15-fixed seat, 16-first fixing screw, 17-first fixing nut, 18-large anti-rotation device, 19-large gasket, 20-second fixing screw, 21-second fixing nut, 22-small anti-rotation device, 23-small gasket.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0021] It should be noted that in the description of this utility model, the terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] This utility model proposes a continuous casting machine.

[0023] Reference Figure 1 and Figure 2 In this preferred embodiment, a continuous casting machine includes a hydraulic cylinder integral beam continuous casting ladle molten steel pouring device. The hydraulic cylinder integral beam continuous casting ladle molten steel pouring device includes a lifting hydraulic cylinder 10 located below the ladle, hydraulic pipelines communicating with the hydraulic chamber of the lifting hydraulic cylinder 10, and a hydraulic control system.

[0024] The hydraulic pipeline includes a return oil pipe and an inlet oil pipe connected to the hydraulic system of the continuous casting sector section. The hydraulic control system includes a check valve 5, a solenoid directional valve 4, a first hydraulically controlled check valve 3, and a second hydraulically controlled check valve 7. The return oil pipe is connected to the first port of the solenoid directional valve 4 via the check valve 5. The second port of the solenoid directional valve 4 is connected to the outlet of the lifting hydraulic cylinder 10 via the first hydraulically controlled check valve 3. The inlet of the lifting hydraulic cylinder 10 is connected to the third port of the solenoid directional valve 4 via the second hydraulically controlled check valve 7. The fourth port of the solenoid directional valve 4 is connected to the inlet oil pipe.

[0025] The continuous casting machine also includes a ladle, a load-bearing beam 11 located below the ladle, a weighing sensor 14 (using a bridge-type high-temperature sensor) located below the load-bearing beam 11, a fixed base 15 located below the weighing sensor 14, and a base 9 supported above the fixed base 15. The fixed base 15 and the base 9 are provided with mounting holes for installing a lifting hydraulic cylinder 10 with a hydraulic cylinder integral beam continuous casting ladle molten steel exhaust device.

[0026] The lifting hydraulic cylinder 10 includes a first hydraulic cylinder 1 and a second hydraulic cylinder 8 located on both sides below the ladle, with the hydraulic lines of the first hydraulic cylinder 1 and the second hydraulic cylinder 8 connected in parallel. Using two hydraulic cylinders enables stable lifting of the ladle.

[0027] Furthermore, referring to Figure 1 The hydraulic control system also includes a first one-way throttle valve 2 and a second one-way throttle valve 7. One end of the first one-way throttle valve 2 is connected to the first hydraulically controlled one-way valve 3, and the other end of the first one-way throttle valve 2 is connected to the oil outlet of the first hydraulic cylinder 1 and the second hydraulic cylinder 8. One end of the second one-way throttle valve 7 is connected to the second hydraulically controlled one-way valve 7, and the other end of the second one-way throttle valve 7 is connected to the oil inlet of the first hydraulic cylinder 1 and the second hydraulic cylinder 8.

[0028] Furthermore, a flow meter is installed on the oil inlet pipe. A pressure gauge is also installed on the oil inlet pipe to facilitate the measurement of flow and pressure in the hydraulic lines.

[0029] In this embodiment, the oil inlet pipe is connected to the rotary joint of the rotating tower and then led out through the rotary joint. Based on the weight of the steel ladle, the hydraulic oil pressure, and the lifting stroke requirements, the lifting height of the lifting hydraulic cylinder 10 is 120mm~180mm.

[0030] Furthermore, the rod head of the lifting hydraulic cylinder 10 is a rotatable ball head that abuts against the bottom of the ladle to support its tilting on one side. The rotatable ball head allows for adaptation to changes in the angle of the contact surface between the cylinder and the ladle during the lifting process. The one-way valve 5 is equipped with an electric push-button to control its opening and closing.

[0031] In this embodiment, the steel ladle is mounted above the load-bearing beam 11 via the pressure block 12. A transition shim 13 is installed between the load-bearing beam 11 and the load cell 14 to ensure the stability of the structure.

[0032] The base 9 and the fixed seat 15 are connected by a first fastening assembly, which includes a first fixing screw 16, a first fixing nut 17 fitted on the first fixing screw 16, a large anti-rotation device, and a large washer 9. The lifting hydraulic cylinder 10 and the mounting hole are connected by a second fastening assembly, which includes a second fixing screw 20, a second fixing nut 22 fitted on the second fixing screw 20, a small anti-rotation device 22, and a small washer 23.

[0033] This continuous casting machine utilizes the existing mounting foundation of the fork arm weighing and measuring device. Without altering the fork arm weighing steel structure beam, the length of the load-bearing beam 11 in the weighing beam assembly is shortened to make room for the installation of the lifting hydraulic cylinder 10. The center distance between the two weighing sensors 14 is adjusted, and on the side where the lifting hydraulic cylinder 10 is installed, the sensor installation position is offset 215mm from the original position towards the center. The length of the fixed seat 15 is correspondingly lengthened, and the base part for installing the lifting hydraulic cylinder 10 is added to form a new ladle weighing beam assembly.

[0034] The hydraulic control system works as follows: The electric button is used to raise the cylinder, as shown in the image. Figure 1 and Figure 2 As shown, the solenoid directional valve 4 is activated, and the hydraulic oil P enters the second hydraulic control check valve 6 through the solenoid directional valve 4, then through the second one-way throttle valve 7, and finally through the pipeline into the rodless chambers of the first hydraulic cylinder 1 and the second hydraulic cylinder 8. The piston rods of the first hydraulic cylinder 1 and the second hydraulic cylinder 8 extend, and the ladle rises to the required lifting height. The oil in the rod chambers of the first hydraulic cylinder 1 and the second hydraulic cylinder 8 enters the first one-way throttle valve 2 (which can adjust the lifting speed), the first hydraulic control check valve 3 and the solenoid directional valve 4 through the pipeline, and finally returns to the system hydraulic oil T.

[0035] The continuous casting machine proposed in this utility model, by setting a molten steel exhaust device below the ladle and using the hydraulic system of the continuous casting sector section to provide hydraulic power oil, achieves the raising and lowering of the lifting hydraulic cylinder 10 with minimal modifications. In the later stage of continuous casting, the ladle is tilted at a certain angle, so that all the remaining molten steel in the ladle is collected near the bottom of the ladle, ultimately reducing the amount of molten steel poured and improving the molten steel yield. The electromagnetic reversing valve 4 is controlled by an electric button, thereby resetting the ladle to allow for the next molten steel pouring operation.

[0036] Since the equipment was put into operation, it has been running reliably without any faults. The actual angle of the ladle lifting and tilting can reach 4.8 degrees. Depending on the type of steel being cast, it is estimated that each ladle can utilize about 0.36 tons more molten steel than before when casting steel, and the molten steel yield can be increased by about 0.15%. A single casting machine can generate direct economic benefits of about 2 million yuan per year.

[0037] This utility model further proposes a device for pouring molten steel from a continuous casting ladle using an integral beam with a hydraulic cylinder.

[0038] Reference Figure 1 In this preferred embodiment, a continuous casting ladle molten steel pouring device with an integral beam and hydraulic cylinder includes a lifting hydraulic cylinder 10 located below the ladle, a hydraulic pipeline connected to the hydraulic chamber of the lifting hydraulic cylinder 10, and a hydraulic control system.

[0039] The hydraulic pipeline includes a return oil pipe and an inlet oil pipe connected to the hydraulic system of the continuous casting sector section. The hydraulic control system includes a check valve 5, a solenoid directional valve 4, a first hydraulically controlled check valve 3, and a second hydraulically controlled check valve 7. The return oil pipe is connected to the first port of the solenoid directional valve 4 via the check valve 5. The second port of the solenoid directional valve 4 is connected to the outlet of the lifting hydraulic cylinder 10 via the first hydraulically controlled check valve 3. The inlet of the lifting hydraulic cylinder 10 is connected to the third port of the solenoid directional valve 4 via the second hydraulically controlled check valve 7. The fourth port of the solenoid directional valve 4 is connected to the inlet oil pipe.

[0040] Specifically, the lifting hydraulic cylinder 10 includes a first hydraulic cylinder 1 and a second hydraulic cylinder 8 located on both sides below the ladle, with the hydraulic lines of the first hydraulic cylinder 1 and the second hydraulic cylinder 8 connected in parallel.

[0041] In this embodiment, the hydraulic control system further includes a first one-way throttle valve 2 and a second one-way throttle valve 7. One end of the first one-way throttle valve 2 is connected to the first hydraulically controlled one-way valve 3, and the other end of the first one-way throttle valve 2 is connected to the oil outlet of the first hydraulic cylinder 1 and the second hydraulic cylinder 8. One end of the second one-way throttle valve 7 is connected to the second hydraulically controlled one-way valve 7, and the other end of the second one-way throttle valve 7 is connected to the oil inlet of the first hydraulic cylinder 1 and the second hydraulic cylinder 8.

[0042] A flow meter is installed on the oil inlet pipe. A pressure gauge is installed on the oil inlet pipe.

[0043] After the oil inlet pipe is connected to the rotary joint of the rotating tower, it is led out through the rotary joint. The lifting height of the lifting hydraulic cylinder 10 is 120mm~180mm.

[0044] This utility model proposes a molten steel pouring device that utilizes the hydraulic system of the continuous casting sector to provide hydraulic power oil. With minimal modifications, it achieves the raising and lowering of the lifting hydraulic cylinder 10. In the later stage of continuous casting, the ladle is tilted at a certain angle, causing all the remaining molten steel in the ladle to gather near the ladle's outlet, ultimately reducing the amount of molten steel remaining and improving the molten steel yield. The electromagnetic reversing valve 4 is controlled by an electric button, thereby resetting the ladle for the next molten steel pouring operation.

[0045] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A hydraulic cylinder monoblock beam type continuous casting ladle steel pouring and pouring-off device, characterized by, The hydraulic cylinder is arranged below the ladle, the hydraulic pipeline is communicated with the hydraulic cavity of the hydraulic cylinder, and the hydraulic control system is arranged. The hydraulic pipeline comprises an oil return pipe and an oil inlet pipe communicated with the hydraulic system of the continuous casting segment, and the hydraulic control system comprises a one-way valve, an electromagnetic reversing valve, a first hydraulic control one-way valve and a second hydraulic control one-way valve.

2. The integral beam type ladle teeming apparatus with a hydraulic cylinder according to claim 1, wherein The hydraulic cylinder comprises a first hydraulic cylinder and a second hydraulic cylinder arranged below the ladle.

3. The integral beam type ladle teeming apparatus with a hydraulic cylinder according to claim 2, wherein The hydraulic control system further comprises a first one-way throttle valve and a second one-way throttle valve.

4. The integral beam type ladle teeming apparatus with a hydraulic cylinder according to claim 1, wherein The oil inlet pipe is provided with a flow meter.

5. The integral beam type ladle teeming device with a hydraulic cylinder according to any one of claims 1 to 4, characterized in that, The oil inlet pipe is provided with a pressure gauge.

6. The integral beam type ladle teeming apparatus with a hydraulic cylinder according to claim 1, wherein The oil inlet pipe is connected with the rotating joint of the rotating tower and is led out through the rotating joint.

7. A continuous caster characterized by comprising: The device further comprises a ladle, a bearing beam arranged below the ladle, a weighing sensor arranged below the bearing beam, a fixing base arranged below the weighing sensor and a base arranged above the fixing base.

8. The continuous caster as claimed in claim 7, characterized in that, The rod head of the hydraulic cylinder is a rotatable ball head to abut against the ladle below to support the side pouring of the ladle.

9. The continuous caster as claimed in claim 7, wherein The ladle is arranged above the bearing beam through a pressure block.

10. The continuous caster as claimed in claim 7, characterized in that, A transition gasket is arranged between the bearing beam and the weighing sensor.

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